2 * mono-profiler-log.c: mono log profiler
5 * Paolo Molaro (lupus@ximian.com)
6 * Alex Rønne Petersen (alexrp@xamarin.com)
8 * Copyright 2010 Novell, Inc (http://www.novell.com)
9 * Copyright 2011 Xamarin Inc (http://www.xamarin.com)
10 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
14 #include <mono/metadata/assembly.h>
15 #include <mono/metadata/debug-helpers.h>
16 #include "../metadata/metadata-internals.h"
17 #include <mono/metadata/mono-config.h>
18 #include <mono/metadata/mono-gc.h>
19 #include <mono/metadata/mono-perfcounters.h>
20 #include <mono/utils/atomic.h>
21 #include <mono/utils/hazard-pointer.h>
22 #include <mono/utils/lock-free-alloc.h>
23 #include <mono/utils/lock-free-queue.h>
24 #include <mono/utils/mono-conc-hashtable.h>
25 #include <mono/utils/mono-counters.h>
26 #include <mono/utils/mono-linked-list-set.h>
27 #include <mono/utils/mono-membar.h>
28 #include <mono/utils/mono-mmap.h>
29 #include <mono/utils/mono-os-mutex.h>
30 #include <mono/utils/mono-os-semaphore.h>
31 #include <mono/utils/mono-threads.h>
32 #include <mono/utils/mono-threads-api.h>
45 #if defined(__APPLE__)
46 #include <mach/mach_time.h>
48 #include <netinet/in.h>
49 #ifdef HAVE_SYS_MMAN_H
52 #include <sys/socket.h>
53 #if defined (HAVE_SYS_ZLIB)
57 #define BUFFER_SIZE (4096 * 16)
59 /* Worst-case size in bytes of a 64-bit value encoded with LEB128. */
60 #define LEB128_SIZE 10
62 /* Size of a value encoded as a single byte. */
63 #undef BYTE_SIZE // mach/i386/vm_param.h on OS X defines this to 8, but it isn't used for anything.
66 /* Size in bytes of the event prefix (ID + time). */
67 #define EVENT_SIZE (BYTE_SIZE + LEB128_SIZE)
69 static volatile gint32 runtime_inited;
70 static volatile gint32 in_shutdown;
72 static ProfilerConfig config;
73 static int nocalls = 0;
74 static int notraces = 0;
75 static int use_zip = 0;
76 static int do_report = 0;
77 static int do_heap_shot = 0;
78 static int max_call_depth = 0;
79 static int command_port = 0;
80 static int heapshot_requested = 0;
81 static int do_mono_sample = 0;
82 static int do_debug = 0;
83 static int do_coverage = 0;
84 static gboolean no_counters = FALSE;
85 static gboolean only_coverage = FALSE;
86 static gboolean debug_coverage = FALSE;
87 static int max_allocated_sample_hits;
89 #define ENABLED(EVT) (config.effective_mask & (EVT))
91 // Statistics for internal profiler data structures.
92 static gint32 sample_allocations_ctr,
93 buffer_allocations_ctr;
95 // Statistics for profiler events.
96 static gint32 sync_points_ctr,
105 gc_handle_creations_ctr,
106 gc_handle_deletions_ctr,
109 finalize_object_begins_ctr,
110 finalize_object_ends_ctr,
114 assembly_unloads_ctr,
119 method_exception_exits_ctr,
122 exception_throws_ctr,
123 exception_clauses_ctr,
136 counter_descriptors_ctr,
138 perfcounter_descriptors_ctr,
139 perfcounter_samples_ctr,
140 coverage_methods_ctr,
141 coverage_statements_ctr,
142 coverage_classes_ctr,
143 coverage_assemblies_ctr;
145 static MonoLinkedListSet profiler_thread_list;
151 * The file is composed by a header followed by 0 or more buffers.
152 * Each buffer contains events that happened on a thread: for a given thread
153 * buffers that appear later in the file are guaranteed to contain events
154 * that happened later in time. Buffers from separate threads could be interleaved,
156 * Buffers are not required to be aligned.
159 * [id: 4 bytes] constant value: LOG_HEADER_ID
160 * [major: 1 byte] [minor: 1 byte] major and minor version of the log profiler
161 * [format: 1 byte] version of the data format for the rest of the file
162 * [ptrsize: 1 byte] size in bytes of a pointer in the profiled program
163 * [startup time: 8 bytes] time in milliseconds since the unix epoch when the program started
164 * [timer overhead: 4 bytes] approximate overhead in nanoseconds of the timer
165 * [flags: 4 bytes] file format flags, should be 0 for now
166 * [pid: 4 bytes] pid of the profiled process
167 * [port: 2 bytes] tcp port for server if != 0
168 * [args size: 4 bytes] size of args
169 * [args: string] arguments passed to the profiler
170 * [arch size: 4 bytes] size of arch
171 * [arch: string] architecture the profiler is running on
172 * [os size: 4 bytes] size of os
173 * [os: string] operating system the profiler is running on
175 * The multiple byte integers are in little-endian format.
178 * [buffer header] [event]*
179 * Buffers have a fixed-size header followed by 0 or more bytes of event data.
180 * Timing information and other values in the event data are usually stored
181 * as uleb128 or sleb128 integers. To save space, as noted for each item below,
182 * some data is represented as a difference between the actual value and
183 * either the last value of the same type (like for timing information) or
184 * as the difference from a value stored in a buffer header.
186 * For timing information the data is stored as uleb128, since timing
187 * increases in a monotonic way in each thread: the value is the number of
188 * nanoseconds to add to the last seen timing data in a buffer. The first value
189 * in a buffer will be calculated from the time_base field in the buffer head.
191 * Object or heap sizes are stored as uleb128.
192 * Pointer differences are stored as sleb128, instead.
194 * If an unexpected value is found, the rest of the buffer should be ignored,
195 * as generally the later values need the former to be interpreted correctly.
197 * buffer header format:
198 * [bufid: 4 bytes] constant value: BUF_ID
199 * [len: 4 bytes] size of the data following the buffer header
200 * [time_base: 8 bytes] time base in nanoseconds since an unspecified epoch
201 * [ptr_base: 8 bytes] base value for pointers
202 * [obj_base: 8 bytes] base value for object addresses
203 * [thread id: 8 bytes] system-specific thread ID (pthread_t for example)
204 * [method_base: 8 bytes] base value for MonoMethod pointers
207 * [extended info: upper 4 bits] [type: lower 4 bits]
208 * [time diff: uleb128] nanoseconds since last timing
210 * The data that follows depends on type and the extended info.
211 * Type is one of the enum values in mono-profiler-log.h: TYPE_ALLOC, TYPE_GC,
212 * TYPE_METADATA, TYPE_METHOD, TYPE_EXCEPTION, TYPE_MONITOR, TYPE_HEAP.
213 * The extended info bits are interpreted based on type, see
214 * each individual event description below.
215 * strings are represented as a 0-terminated utf8 sequence.
218 * [num: uleb128] number of frames following
219 * [frame: sleb128]* mum MonoMethod* as a pointer difference from the last such
220 * pointer or the buffer method_base
224 * exinfo: zero or TYPE_ALLOC_BT
225 * [ptr: sleb128] class as a byte difference from ptr_base
226 * [obj: sleb128] object address as a byte difference from obj_base
227 * [size: uleb128] size of the object in the heap
228 * If exinfo == TYPE_ALLOC_BT, a backtrace follows.
232 * exinfo: one of TYPE_GC_EVENT, TYPE_GC_RESIZE, TYPE_GC_MOVE, TYPE_GC_HANDLE_CREATED[_BT],
233 * TYPE_GC_HANDLE_DESTROYED[_BT], TYPE_GC_FINALIZE_START, TYPE_GC_FINALIZE_END,
234 * TYPE_GC_FINALIZE_OBJECT_START, TYPE_GC_FINALIZE_OBJECT_END
235 * if exinfo == TYPE_GC_RESIZE
236 * [heap_size: uleb128] new heap size
237 * if exinfo == TYPE_GC_EVENT
238 * [event type: byte] GC event (MONO_GC_EVENT_* from profiler.h)
239 * [generation: byte] GC generation event refers to
240 * if exinfo == TYPE_GC_MOVE
241 * [num_objects: uleb128] number of object moves that follow
242 * [objaddr: sleb128]+ num_objects object pointer differences from obj_base
243 * num is always an even number: the even items are the old
244 * addresses, the odd numbers are the respective new object addresses
245 * if exinfo == TYPE_GC_HANDLE_CREATED[_BT]
246 * [handle_type: uleb128] MonoGCHandleType enum value
247 * upper bits reserved as flags
248 * [handle: uleb128] GC handle value
249 * [objaddr: sleb128] object pointer differences from obj_base
250 * If exinfo == TYPE_GC_HANDLE_CREATED_BT, a backtrace follows.
251 * if exinfo == TYPE_GC_HANDLE_DESTROYED[_BT]
252 * [handle_type: uleb128] MonoGCHandleType enum value
253 * upper bits reserved as flags
254 * [handle: uleb128] GC handle value
255 * If exinfo == TYPE_GC_HANDLE_DESTROYED_BT, a backtrace follows.
256 * if exinfo == TYPE_GC_FINALIZE_OBJECT_{START,END}
257 * [object: sleb128] the object as a difference from obj_base
259 * type metadata format:
260 * type: TYPE_METADATA
261 * exinfo: one of: TYPE_END_LOAD, TYPE_END_UNLOAD (optional for TYPE_THREAD and TYPE_DOMAIN,
262 * doesn't occur for TYPE_CLASS)
263 * [mtype: byte] metadata type, one of: TYPE_CLASS, TYPE_IMAGE, TYPE_ASSEMBLY, TYPE_DOMAIN,
264 * TYPE_THREAD, TYPE_CONTEXT
265 * [pointer: sleb128] pointer of the metadata type depending on mtype
266 * if mtype == TYPE_CLASS
267 * [image: sleb128] MonoImage* as a pointer difference from ptr_base
268 * [name: string] full class name
269 * if mtype == TYPE_IMAGE
270 * [name: string] image file name
271 * if mtype == TYPE_ASSEMBLY
272 * [image: sleb128] MonoImage* as a pointer difference from ptr_base
273 * [name: string] assembly name
274 * if mtype == TYPE_DOMAIN && exinfo == 0
275 * [name: string] domain friendly name
276 * if mtype == TYPE_CONTEXT
277 * [domain: sleb128] domain id as pointer
278 * if mtype == TYPE_THREAD && exinfo == 0
279 * [name: string] thread name
281 * type method format:
283 * exinfo: one of: TYPE_LEAVE, TYPE_ENTER, TYPE_EXC_LEAVE, TYPE_JIT
284 * [method: sleb128] MonoMethod* as a pointer difference from the last such
285 * pointer or the buffer method_base
286 * if exinfo == TYPE_JIT
287 * [code address: sleb128] pointer to the native code as a diff from ptr_base
288 * [code size: uleb128] size of the generated code
289 * [name: string] full method name
291 * type exception format:
292 * type: TYPE_EXCEPTION
293 * exinfo: zero, TYPE_CLAUSE, or TYPE_THROW_BT
294 * if exinfo == TYPE_CLAUSE
295 * [clause type: byte] MonoExceptionEnum enum value
296 * [clause index: uleb128] index of the current clause
297 * [method: sleb128] MonoMethod* as a pointer difference from the last such
298 * pointer or the buffer method_base
299 * [object: sleb128] the exception object as a difference from obj_base
301 * [object: sleb128] the exception object as a difference from obj_base
302 * If exinfo == TYPE_THROW_BT, a backtrace follows.
304 * type runtime format:
306 * exinfo: one of: TYPE_JITHELPER
307 * if exinfo == TYPE_JITHELPER
308 * [type: byte] MonoProfilerCodeBufferType enum value
309 * [buffer address: sleb128] pointer to the native code as a diff from ptr_base
310 * [buffer size: uleb128] size of the generated code
311 * if type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE
312 * [name: string] buffer description name
314 * type monitor format:
316 * exinfo: zero or TYPE_MONITOR_BT
317 * [type: byte] MonoProfilerMonitorEvent enum value
318 * [object: sleb128] the lock object as a difference from obj_base
319 * If exinfo == TYPE_MONITOR_BT, a backtrace follows.
323 * exinfo: one of TYPE_HEAP_START, TYPE_HEAP_END, TYPE_HEAP_OBJECT, TYPE_HEAP_ROOT
324 * if exinfo == TYPE_HEAP_OBJECT
325 * [object: sleb128] the object as a difference from obj_base
326 * [class: sleb128] the object MonoClass* as a difference from ptr_base
327 * [size: uleb128] size of the object on the heap
328 * [num_refs: uleb128] number of object references
329 * each referenced objref is preceded by a uleb128 encoded offset: the
330 * first offset is from the object address and each next offset is relative
331 * to the previous one
332 * [objrefs: sleb128]+ object referenced as a difference from obj_base
333 * The same object can appear multiple times, but only the first time
334 * with size != 0: in the other cases this data will only be used to
335 * provide additional referenced objects.
336 * if exinfo == TYPE_HEAP_ROOT
337 * [num_roots: uleb128] number of root references
338 * [num_gc: uleb128] number of major gcs
339 * [object: sleb128] the object as a difference from obj_base
340 * [root_type: byte] the root_type: MonoProfileGCRootType (profiler.h)
341 * [extra_info: uleb128] the extra_info value
342 * object, root_type and extra_info are repeated num_roots times
346 * exinfo: one of TYPE_SAMPLE_HIT, TYPE_SAMPLE_USYM, TYPE_SAMPLE_UBIN, TYPE_SAMPLE_COUNTERS_DESC, TYPE_SAMPLE_COUNTERS
347 * if exinfo == TYPE_SAMPLE_HIT
348 * [thread: sleb128] thread id as difference from ptr_base
349 * [count: uleb128] number of following instruction addresses
350 * [ip: sleb128]* instruction pointer as difference from ptr_base
351 * [mbt_count: uleb128] number of managed backtrace frames
352 * [method: sleb128]* MonoMethod* as a pointer difference from the last such
353 * pointer or the buffer method_base (the first such method can be also indentified by ip, but this is not neccessarily true)
354 * if exinfo == TYPE_SAMPLE_USYM
355 * [address: sleb128] symbol address as a difference from ptr_base
356 * [size: uleb128] symbol size (may be 0 if unknown)
357 * [name: string] symbol name
358 * if exinfo == TYPE_SAMPLE_UBIN
359 * [address: sleb128] address where binary has been loaded as a difference from ptr_base
360 * [offset: uleb128] file offset of mapping (the same file can be mapped multiple times)
361 * [size: uleb128] memory size
362 * [name: string] binary name
363 * if exinfo == TYPE_SAMPLE_COUNTERS_DESC
364 * [len: uleb128] number of counters
366 * [section: uleb128] section of counter
367 * if section == MONO_COUNTER_PERFCOUNTERS:
368 * [section_name: string] section name of counter
369 * [name: string] name of counter
370 * [type: byte] type of counter
371 * [unit: byte] unit of counter
372 * [variance: byte] variance of counter
373 * [index: uleb128] unique index of counter
374 * if exinfo == TYPE_SAMPLE_COUNTERS
376 * [index: uleb128] unique index of counter
379 * [type: byte] type of counter value
382 * [0: byte] 0 -> value is null
384 * [1: byte] 1 -> value is not null
385 * [value: string] counter value
387 * [value: uleb128/sleb128/double] counter value, can be sleb128, uleb128 or double (determined by using type)
389 * type coverage format
390 * type: TYPE_COVERAGE
391 * exinfo: one of TYPE_COVERAGE_METHOD, TYPE_COVERAGE_STATEMENT, TYPE_COVERAGE_ASSEMBLY, TYPE_COVERAGE_CLASS
392 * if exinfo == TYPE_COVERAGE_METHOD
393 * [assembly: string] name of assembly
394 * [class: string] name of the class
395 * [name: string] name of the method
396 * [signature: string] the signature of the method
397 * [filename: string] the file path of the file that contains this method
398 * [token: uleb128] the method token
399 * [method_id: uleb128] an ID for this data to associate with the buffers of TYPE_COVERAGE_STATEMENTS
400 * [len: uleb128] the number of TYPE_COVERAGE_BUFFERS associated with this method
401 * if exinfo == TYPE_COVERAGE_STATEMENTS
402 * [method_id: uleb128] an the TYPE_COVERAGE_METHOD buffer to associate this with
403 * [offset: uleb128] the il offset relative to the previous offset
404 * [counter: uleb128] the counter for this instruction
405 * [line: uleb128] the line of filename containing this instruction
406 * [column: uleb128] the column containing this instruction
407 * if exinfo == TYPE_COVERAGE_ASSEMBLY
408 * [name: string] assembly name
409 * [guid: string] assembly GUID
410 * [filename: string] assembly filename
411 * [number_of_methods: uleb128] the number of methods in this assembly
412 * [fully_covered: uleb128] the number of fully covered methods
413 * [partially_covered: uleb128] the number of partially covered methods
414 * currently partially_covered will always be 0, and fully_covered is the
415 * number of methods that are fully and partially covered.
416 * if exinfo == TYPE_COVERAGE_CLASS
417 * [name: string] assembly name
418 * [class: string] class name
419 * [number_of_methods: uleb128] the number of methods in this class
420 * [fully_covered: uleb128] the number of fully covered methods
421 * [partially_covered: uleb128] the number of partially covered methods
422 * currently partially_covered will always be 0, and fully_covered is the
423 * number of methods that are fully and partially covered.
427 * exinfo: one of: TYPE_SYNC_POINT
428 * if exinfo == TYPE_SYNC_POINT
429 * [type: byte] MonoProfilerSyncPointType enum value
432 // Pending data to be written to the log, for a single thread.
433 // Threads periodically flush their own LogBuffers by calling safe_send
434 typedef struct _LogBuffer LogBuffer;
436 // Next (older) LogBuffer in processing queue
442 uintptr_t method_base;
443 uintptr_t last_method;
447 // Bytes allocated for this LogBuffer
450 // Start of currently unused space in buffer
451 unsigned char* cursor;
453 // Pointer to start-of-structure-plus-size (for convenience)
454 unsigned char* buf_end;
456 // Start of data in buffer. Contents follow "buffer format" described above.
457 unsigned char buf [1];
461 MonoLinkedListSetNode node;
463 // Convenience pointer to the profiler structure.
464 MonoProfiler *profiler;
466 // Was this thread added to the LLS?
469 // The current log buffer for this thread.
472 // Methods referenced by events in `buffer`, see `MethodInfo`.
475 // Current call depth for enter/leave events.
478 // Indicates whether this thread is currently writing to its `buffer`.
481 // Has this thread written a thread end event to `buffer`?
484 // Stored in `buffer_lock_state` to take the exclusive lock.
486 } MonoProfilerThread;
488 // Do not use these TLS macros directly unless you know what you're doing.
492 #define PROF_TLS_SET(VAL) (TlsSetValue (profiler_tls, (VAL)))
493 #define PROF_TLS_GET() ((MonoProfilerThread *) TlsGetValue (profiler_tls))
494 #define PROF_TLS_INIT() (profiler_tls = TlsAlloc ())
495 #define PROF_TLS_FREE() (TlsFree (profiler_tls))
497 static DWORD profiler_tls;
501 #define PROF_TLS_SET(VAL) (profiler_tls = (VAL))
502 #define PROF_TLS_GET() (profiler_tls)
503 #define PROF_TLS_INIT()
504 #define PROF_TLS_FREE()
506 static __thread MonoProfilerThread *profiler_tls;
510 #define PROF_TLS_SET(VAL) (pthread_setspecific (profiler_tls, (VAL)))
511 #define PROF_TLS_GET() ((MonoProfilerThread *) pthread_getspecific (profiler_tls))
512 #define PROF_TLS_INIT() (pthread_key_create (&profiler_tls, NULL))
513 #define PROF_TLS_FREE() (pthread_key_delete (profiler_tls))
515 static pthread_key_t profiler_tls;
522 return (uintptr_t) mono_native_thread_id_get ();
529 return (uintptr_t) GetCurrentProcessId ();
531 return (uintptr_t) getpid ();
536 static mach_timebase_info_data_t timebase_info;
537 #elif defined (HOST_WIN32)
538 static LARGE_INTEGER pcounter_freq;
541 #define TICKS_PER_SEC 1000000000LL
547 uint64_t time = mach_absolute_time ();
549 time *= timebase_info.numer;
550 time /= timebase_info.denom;
553 #elif defined (HOST_WIN32)
556 QueryPerformanceCounter (&value);
558 return value.QuadPart * TICKS_PER_SEC / pcounter_freq.QuadPart;
559 #elif defined (CLOCK_MONOTONIC)
560 struct timespec tspec;
562 clock_gettime (CLOCK_MONOTONIC, &tspec);
564 return ((uint64_t) tspec.tv_sec * TICKS_PER_SEC + tspec.tv_nsec);
568 gettimeofday (&tv, NULL);
570 return ((uint64_t) tv.tv_sec * TICKS_PER_SEC + tv.tv_usec * 1000);
574 static int timer_overhead;
580 mach_timebase_info (&timebase_info);
581 #elif defined (HOST_WIN32)
582 QueryPerformanceFrequency (&pcounter_freq);
585 uint64_t time_start = current_time ();
587 for (int i = 0; i < 256; ++i)
590 uint64_t time_end = current_time ();
592 timer_overhead = (time_end - time_start) / 256;
596 * These macros should be used when writing an event to a log buffer. They
597 * take care of a bunch of stuff that can be repetitive and error-prone, such
598 * as attaching the current thread, acquiring/releasing the buffer lock,
599 * incrementing the event counter, expanding the log buffer, etc. They also
600 * create a scope so that it's harder to leak the LogBuffer pointer, which can
601 * be problematic as the pointer is unstable when the buffer lock isn't
604 * If the calling thread is already attached, these macros will not alter its
605 * attach mode (i.e. whether it's added to the LLS). If the thread is not
606 * attached, init_thread () will be called with add_to_lls = TRUE.
609 #define ENTER_LOG(COUNTER, BUFFER, SIZE) \
611 MonoProfilerThread *thread__ = get_thread (); \
612 if (thread__->attached) \
614 g_assert (!thread__->busy && "Why are we trying to write a new event while already writing one?"); \
615 thread__->busy = TRUE; \
616 InterlockedIncrement ((COUNTER)); \
617 LogBuffer *BUFFER = ensure_logbuf_unsafe (thread__, (SIZE))
619 #define EXIT_LOG_EXPLICIT(SEND) \
620 thread__->busy = FALSE; \
622 send_log_unsafe (TRUE); \
623 if (thread__->attached) \
627 // Pass these to EXIT_LOG_EXPLICIT () for easier reading.
629 #define NO_SEND FALSE
631 #define EXIT_LOG EXIT_LOG_EXPLICIT (DO_SEND)
633 typedef struct _BinaryObject BinaryObject;
634 struct _BinaryObject {
640 static MonoProfiler *log_profiler;
642 struct _MonoProfiler {
643 MonoProfilerHandle handle;
645 #if defined (HAVE_SYS_ZLIB)
649 uint64_t startup_time;
654 MonoNativeThreadId helper_thread;
655 MonoNativeThreadId writer_thread;
656 MonoNativeThreadId dumper_thread;
657 volatile gint32 run_writer_thread;
658 MonoLockFreeAllocSizeClass writer_entry_size_class;
659 MonoLockFreeAllocator writer_entry_allocator;
660 MonoLockFreeQueue writer_queue;
661 MonoSemType writer_queue_sem;
662 MonoConcurrentHashTable *method_table;
663 mono_mutex_t method_table_mutex;
664 volatile gint32 run_dumper_thread;
665 MonoLockFreeQueue dumper_queue;
666 MonoSemType dumper_queue_sem;
667 MonoLockFreeAllocSizeClass sample_size_class;
668 MonoLockFreeAllocator sample_allocator;
669 MonoLockFreeQueue sample_reuse_queue;
670 BinaryObject *binary_objects;
671 GPtrArray *coverage_filters;
675 MonoLockFreeQueueNode node;
680 #define WRITER_ENTRY_BLOCK_SIZE (mono_pagesize ())
689 pstrdup (const char *s)
691 int len = strlen (s) + 1;
692 char *p = (char *) g_malloc (len);
698 alloc_buffer (int size)
700 return mono_valloc (NULL, size, MONO_MMAP_READ | MONO_MMAP_WRITE | MONO_MMAP_ANON | MONO_MMAP_PRIVATE, MONO_MEM_ACCOUNT_PROFILER);
704 free_buffer (void *buf, int size)
706 mono_vfree (buf, size, MONO_MEM_ACCOUNT_PROFILER);
710 create_buffer (uintptr_t tid, int bytes)
712 LogBuffer* buf = (LogBuffer *) alloc_buffer (MAX (BUFFER_SIZE, bytes));
714 InterlockedIncrement (&buffer_allocations_ctr);
716 buf->size = BUFFER_SIZE;
717 buf->time_base = current_time ();
718 buf->last_time = buf->time_base;
719 buf->buf_end = (unsigned char *) buf + buf->size;
720 buf->cursor = buf->buf;
721 buf->thread_id = tid;
727 * Must be called with the reader lock held if thread is the current thread, or
728 * the exclusive lock if thread is a different thread. However, if thread is
729 * the current thread, and init_thread () was called with add_to_lls = FALSE,
730 * then no locking is necessary.
733 init_buffer_state (MonoProfilerThread *thread)
735 thread->buffer = create_buffer (thread->node.key, 0);
736 thread->methods = NULL;
740 clear_hazard_pointers (MonoThreadHazardPointers *hp)
742 mono_hazard_pointer_clear (hp, 0);
743 mono_hazard_pointer_clear (hp, 1);
744 mono_hazard_pointer_clear (hp, 2);
747 static MonoProfilerThread *
748 init_thread (MonoProfiler *prof, gboolean add_to_lls)
750 MonoProfilerThread *thread = PROF_TLS_GET ();
753 * Sometimes we may try to initialize a thread twice. One example is the
754 * main thread: We initialize it when setting up the profiler, but we will
755 * also get a thread_start () callback for it. Another example is when
756 * attaching new threads to the runtime: We may get a gc_alloc () callback
757 * for that thread's thread object (where we initialize it), soon followed
758 * by a thread_start () callback.
760 * These cases are harmless anyhow. Just return if we've already done the
761 * initialization work.
766 thread = g_malloc (sizeof (MonoProfilerThread));
767 thread->node.key = thread_id ();
768 thread->profiler = prof;
769 thread->attached = add_to_lls;
770 thread->call_depth = 0;
772 thread->ended = FALSE;
774 init_buffer_state (thread);
776 thread->small_id = mono_thread_info_register_small_id ();
779 * Some internal profiler threads don't need to be cleaned up
780 * by the main thread on shutdown.
783 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
784 g_assert (mono_lls_insert (&profiler_thread_list, hp, &thread->node) && "Why can't we insert the thread in the LLS?");
785 clear_hazard_pointers (hp);
788 PROF_TLS_SET (thread);
793 // Only valid if init_thread () was called with add_to_lls = FALSE.
795 deinit_thread (MonoProfilerThread *thread)
797 g_assert (!thread->attached && "Why are we manually freeing an attached thread?");
803 static MonoProfilerThread *
806 return init_thread (log_profiler, TRUE);
809 // Only valid if init_thread () was called with add_to_lls = FALSE.
811 ensure_logbuf_unsafe (MonoProfilerThread *thread, int bytes)
813 LogBuffer *old = thread->buffer;
815 if (old->cursor + bytes < old->buf_end)
818 LogBuffer *new_ = create_buffer (thread->node.key, bytes);
820 thread->buffer = new_;
826 * This is a reader/writer spin lock of sorts used to protect log buffers.
827 * When a thread modifies its own log buffer, it increments the reader
828 * count. When a thread wants to access log buffers of other threads, it
829 * takes the exclusive lock.
831 * `buffer_lock_state` holds the reader count in its lower 16 bits, and
832 * the small ID of the thread currently holding the exclusive (writer)
833 * lock in its upper 16 bits. Both can be zero. It's important that the
834 * whole lock state is a single word that can be read/written atomically
835 * to avoid race conditions where there could end up being readers while
836 * the writer lock is held.
838 * The lock is writer-biased. When a thread wants to take the exclusive
839 * lock, it increments `buffer_lock_exclusive_intent` which will make new
840 * readers spin until it's back to zero, then takes the exclusive lock
841 * once the reader count has reached zero. After releasing the exclusive
842 * lock, it decrements `buffer_lock_exclusive_intent`, which, when it
843 * reaches zero again, allows readers to increment the reader count.
845 * The writer bias is necessary because we take the exclusive lock in
846 * `gc_event ()` during STW. If the writer bias was not there, and a
847 * program had a large number of threads, STW-induced pauses could be
848 * significantly longer than they have to be. Also, we emit periodic
849 * sync points from the helper thread, which requires taking the
850 * exclusive lock, and we need those to arrive with a reasonably
851 * consistent frequency so that readers don't have to queue up too many
852 * events between sync points.
854 * The lock does not support recursion.
856 static volatile gint32 buffer_lock_state;
857 static volatile gint32 buffer_lock_exclusive_intent;
863 * If the thread holding the exclusive lock tries to modify the
864 * reader count, just make it a no-op. This way, we also avoid
865 * invoking the GC safe point macros below, which could break if
866 * done from a thread that is currently the initiator of STW.
868 * In other words, we rely on the fact that the GC thread takes
869 * the exclusive lock in the gc_event () callback when the world
872 if (InterlockedRead (&buffer_lock_state) != get_thread ()->small_id << 16) {
879 // Hold off if a thread wants to take the exclusive lock.
880 while (InterlockedRead (&buffer_lock_exclusive_intent))
881 mono_thread_info_yield ();
883 old = InterlockedRead (&buffer_lock_state);
885 // Is a thread holding the exclusive lock?
887 mono_thread_info_yield ();
892 } while (InterlockedCompareExchange (&buffer_lock_state, new_, old) != old);
897 mono_memory_barrier ();
903 mono_memory_barrier ();
905 gint32 state = InterlockedRead (&buffer_lock_state);
907 // See the comment in buffer_lock ().
908 if (state == PROF_TLS_GET ()->small_id << 16)
911 g_assert (state && "Why are we decrementing a zero reader count?");
912 g_assert (!(state >> 16) && "Why is the exclusive lock held?");
914 InterlockedDecrement (&buffer_lock_state);
918 buffer_lock_excl (void)
920 gint32 new_ = get_thread ()->small_id << 16;
922 g_assert (InterlockedRead (&buffer_lock_state) != new_ && "Why are we taking the exclusive lock twice?");
924 InterlockedIncrement (&buffer_lock_exclusive_intent);
928 while (InterlockedCompareExchange (&buffer_lock_state, new_, 0))
929 mono_thread_info_yield ();
933 mono_memory_barrier ();
937 buffer_unlock_excl (void)
939 mono_memory_barrier ();
941 gint32 state = InterlockedRead (&buffer_lock_state);
942 gint32 excl = state >> 16;
944 g_assert (excl && "Why is the exclusive lock not held?");
945 g_assert (excl == PROF_TLS_GET ()->small_id && "Why does another thread hold the exclusive lock?");
946 g_assert (!(state & 0xFFFF) && "Why are there readers when the exclusive lock is held?");
948 InterlockedWrite (&buffer_lock_state, 0);
949 InterlockedDecrement (&buffer_lock_exclusive_intent);
953 encode_uleb128 (uint64_t value, uint8_t *buf, uint8_t **endbuf)
958 uint8_t b = value & 0x7f;
961 if (value != 0) /* more bytes to come */
971 encode_sleb128 (intptr_t value, uint8_t *buf, uint8_t **endbuf)
974 int negative = (value < 0);
975 unsigned int size = sizeof (intptr_t) * 8;
983 /* the following is unnecessary if the
984 * implementation of >>= uses an arithmetic rather
985 * than logical shift for a signed left operand
989 value |= - ((intptr_t) 1 <<(size - 7));
991 /* sign bit of byte is second high order bit (0x40) */
992 if ((value == 0 && !(byte & 0x40)) ||
993 (value == -1 && (byte & 0x40)))
1005 emit_byte (LogBuffer *logbuffer, int value)
1007 logbuffer->cursor [0] = value;
1008 logbuffer->cursor++;
1010 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1014 emit_value (LogBuffer *logbuffer, int value)
1016 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
1018 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1022 emit_time (LogBuffer *logbuffer, uint64_t value)
1024 uint64_t tdiff = value - logbuffer->last_time;
1025 encode_uleb128 (tdiff, logbuffer->cursor, &logbuffer->cursor);
1026 logbuffer->last_time = value;
1028 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1032 emit_event_time (LogBuffer *logbuffer, int event, uint64_t time)
1034 emit_byte (logbuffer, event);
1035 emit_time (logbuffer, time);
1039 emit_event (LogBuffer *logbuffer, int event)
1041 emit_event_time (logbuffer, event, current_time ());
1045 emit_svalue (LogBuffer *logbuffer, int64_t value)
1047 encode_sleb128 (value, logbuffer->cursor, &logbuffer->cursor);
1049 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1053 emit_uvalue (LogBuffer *logbuffer, uint64_t value)
1055 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
1057 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1061 emit_ptr (LogBuffer *logbuffer, const void *ptr)
1063 if (!logbuffer->ptr_base)
1064 logbuffer->ptr_base = (uintptr_t) ptr;
1066 emit_svalue (logbuffer, (intptr_t) ptr - logbuffer->ptr_base);
1068 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1072 emit_method_inner (LogBuffer *logbuffer, void *method)
1074 if (!logbuffer->method_base) {
1075 logbuffer->method_base = (intptr_t) method;
1076 logbuffer->last_method = (intptr_t) method;
1079 encode_sleb128 ((intptr_t) ((char *) method - (char *) logbuffer->last_method), logbuffer->cursor, &logbuffer->cursor);
1080 logbuffer->last_method = (intptr_t) method;
1082 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1085 // The reader lock must be held.
1087 register_method_local (MonoMethod *method, MonoJitInfo *ji)
1089 MonoProfilerThread *thread = get_thread ();
1091 if (!mono_conc_hashtable_lookup (thread->profiler->method_table, method)) {
1092 MethodInfo *info = (MethodInfo *) g_malloc (sizeof (MethodInfo));
1094 info->method = method;
1096 info->time = current_time ();
1098 GPtrArray *arr = thread->methods ? thread->methods : (thread->methods = g_ptr_array_new ());
1099 g_ptr_array_add (arr, info);
1104 emit_method (LogBuffer *logbuffer, MonoMethod *method)
1106 register_method_local (method, NULL);
1107 emit_method_inner (logbuffer, method);
1111 emit_obj (LogBuffer *logbuffer, void *ptr)
1113 if (!logbuffer->obj_base)
1114 logbuffer->obj_base = (uintptr_t) ptr >> 3;
1116 emit_svalue (logbuffer, ((uintptr_t) ptr >> 3) - logbuffer->obj_base);
1118 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1122 emit_string (LogBuffer *logbuffer, const char *str, size_t size)
1126 for (; i < size; i++) {
1129 emit_byte (logbuffer, str [i]);
1132 emit_byte (logbuffer, '\0');
1136 emit_double (LogBuffer *logbuffer, double value)
1139 unsigned char buffer[8];
1140 memcpy (buffer, &value, 8);
1141 #if G_BYTE_ORDER == G_BIG_ENDIAN
1142 for (i = 7; i >= 0; i--)
1144 for (i = 0; i < 8; i++)
1146 emit_byte (logbuffer, buffer[i]);
1150 write_int16 (char *buf, int32_t value)
1153 for (i = 0; i < 2; ++i) {
1161 write_int32 (char *buf, int32_t value)
1164 for (i = 0; i < 4; ++i) {
1172 write_int64 (char *buf, int64_t value)
1175 for (i = 0; i < 8; ++i) {
1183 write_header_string (char *p, const char *str)
1185 size_t len = strlen (str) + 1;
1187 p = write_int32 (p, len);
1194 dump_header (MonoProfiler *profiler)
1196 const char *args = profiler->args;
1197 const char *arch = mono_config_get_cpu ();
1198 const char *os = mono_config_get_os ();
1200 char *hbuf = g_malloc (
1201 sizeof (gint32) /* header id */ +
1202 sizeof (gint8) /* major version */ +
1203 sizeof (gint8) /* minor version */ +
1204 sizeof (gint8) /* data version */ +
1205 sizeof (gint8) /* word size */ +
1206 sizeof (gint64) /* startup time */ +
1207 sizeof (gint32) /* timer overhead */ +
1208 sizeof (gint32) /* flags */ +
1209 sizeof (gint32) /* process id */ +
1210 sizeof (gint16) /* command port */ +
1211 sizeof (gint32) + strlen (args) + 1 /* arguments */ +
1212 sizeof (gint32) + strlen (arch) + 1 /* architecture */ +
1213 sizeof (gint32) + strlen (os) + 1 /* operating system */
1217 p = write_int32 (p, LOG_HEADER_ID);
1218 *p++ = LOG_VERSION_MAJOR;
1219 *p++ = LOG_VERSION_MINOR;
1220 *p++ = LOG_DATA_VERSION;
1221 *p++ = sizeof (void *);
1222 p = write_int64 (p, ((uint64_t) time (NULL)) * 1000);
1223 p = write_int32 (p, timer_overhead);
1224 p = write_int32 (p, 0); /* flags */
1225 p = write_int32 (p, process_id ());
1226 p = write_int16 (p, profiler->command_port);
1227 p = write_header_string (p, args);
1228 p = write_header_string (p, arch);
1229 p = write_header_string (p, os);
1231 #if defined (HAVE_SYS_ZLIB)
1232 if (profiler->gzfile) {
1233 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1237 fwrite (hbuf, p - hbuf, 1, profiler->file);
1238 fflush (profiler->file);
1245 * Must be called with the reader lock held if thread is the current thread, or
1246 * the exclusive lock if thread is a different thread. However, if thread is
1247 * the current thread, and init_thread () was called with add_to_lls = FALSE,
1248 * then no locking is necessary.
1251 send_buffer (MonoProfilerThread *thread)
1253 WriterQueueEntry *entry = mono_lock_free_alloc (&thread->profiler->writer_entry_allocator);
1254 entry->methods = thread->methods;
1255 entry->buffer = thread->buffer;
1257 mono_lock_free_queue_node_init (&entry->node, FALSE);
1259 mono_lock_free_queue_enqueue (&thread->profiler->writer_queue, &entry->node);
1260 mono_os_sem_post (&thread->profiler->writer_queue_sem);
1264 free_thread (gpointer p)
1266 MonoProfilerThread *thread = p;
1268 if (!thread->ended) {
1270 * The thread is being cleaned up by the main thread during
1271 * shutdown. This typically happens for internal runtime
1272 * threads. We need to synthesize a thread end event.
1275 InterlockedIncrement (&thread_ends_ctr);
1277 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
1278 LogBuffer *buf = ensure_logbuf_unsafe (thread,
1279 EVENT_SIZE /* event */ +
1280 BYTE_SIZE /* type */ +
1281 LEB128_SIZE /* tid */
1284 emit_event (buf, TYPE_END_UNLOAD | TYPE_METADATA);
1285 emit_byte (buf, TYPE_THREAD);
1286 emit_ptr (buf, (void *) thread->node.key);
1290 send_buffer (thread);
1296 remove_thread (MonoProfilerThread *thread)
1298 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
1300 if (mono_lls_remove (&profiler_thread_list, hp, &thread->node))
1301 mono_thread_hazardous_try_free (thread, free_thread);
1303 clear_hazard_pointers (hp);
1307 dump_buffer (MonoProfiler *profiler, LogBuffer *buf)
1313 dump_buffer (profiler, buf->next);
1315 if (buf->cursor - buf->buf) {
1316 p = write_int32 (p, BUF_ID);
1317 p = write_int32 (p, buf->cursor - buf->buf);
1318 p = write_int64 (p, buf->time_base);
1319 p = write_int64 (p, buf->ptr_base);
1320 p = write_int64 (p, buf->obj_base);
1321 p = write_int64 (p, buf->thread_id);
1322 p = write_int64 (p, buf->method_base);
1324 #if defined (HAVE_SYS_ZLIB)
1325 if (profiler->gzfile) {
1326 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1327 gzwrite (profiler->gzfile, buf->buf, buf->cursor - buf->buf);
1331 fwrite (hbuf, p - hbuf, 1, profiler->file);
1332 fwrite (buf->buf, buf->cursor - buf->buf, 1, profiler->file);
1333 fflush (profiler->file);
1337 free_buffer (buf, buf->size);
1341 dump_buffer_threadless (MonoProfiler *profiler, LogBuffer *buf)
1343 for (LogBuffer *iter = buf; iter; iter = iter->next)
1344 iter->thread_id = 0;
1346 dump_buffer (profiler, buf);
1349 // Only valid if init_thread () was called with add_to_lls = FALSE.
1351 send_log_unsafe (gboolean if_needed)
1353 MonoProfilerThread *thread = PROF_TLS_GET ();
1355 if (!if_needed || (if_needed && thread->buffer->next)) {
1356 if (!thread->attached)
1357 for (LogBuffer *iter = thread->buffer; iter; iter = iter->next)
1358 iter->thread_id = 0;
1360 send_buffer (thread);
1361 init_buffer_state (thread);
1365 // Assumes that the exclusive lock is held.
1367 sync_point_flush (void)
1369 g_assert (InterlockedRead (&buffer_lock_state) == PROF_TLS_GET ()->small_id << 16 && "Why don't we hold the exclusive lock?");
1371 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
1372 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
1374 send_buffer (thread);
1375 init_buffer_state (thread);
1376 } MONO_LLS_FOREACH_SAFE_END
1379 // Assumes that the exclusive lock is held.
1381 sync_point_mark (MonoProfilerSyncPointType type)
1383 g_assert (InterlockedRead (&buffer_lock_state) == PROF_TLS_GET ()->small_id << 16 && "Why don't we hold the exclusive lock?");
1385 ENTER_LOG (&sync_points_ctr, logbuffer,
1386 EVENT_SIZE /* event */ +
1387 LEB128_SIZE /* type */
1390 emit_event (logbuffer, TYPE_META | TYPE_SYNC_POINT);
1391 emit_byte (logbuffer, type);
1393 EXIT_LOG_EXPLICIT (NO_SEND);
1395 send_log_unsafe (FALSE);
1398 // Assumes that the exclusive lock is held.
1400 sync_point (MonoProfilerSyncPointType type)
1402 sync_point_flush ();
1403 sync_point_mark (type);
1407 gc_reference (MonoObject *obj, MonoClass *klass, uintptr_t size, uintptr_t num, MonoObject **refs, uintptr_t *offsets, void *data)
1409 /* account for object alignment in the heap */
1413 ENTER_LOG (&heap_objects_ctr, logbuffer,
1414 EVENT_SIZE /* event */ +
1415 LEB128_SIZE /* obj */ +
1416 LEB128_SIZE /* klass */ +
1417 LEB128_SIZE /* size */ +
1418 LEB128_SIZE /* num */ +
1420 LEB128_SIZE /* offset */ +
1421 LEB128_SIZE /* ref */
1425 emit_event (logbuffer, TYPE_HEAP_OBJECT | TYPE_HEAP);
1426 emit_obj (logbuffer, obj);
1427 emit_ptr (logbuffer, klass);
1428 emit_value (logbuffer, size);
1429 emit_value (logbuffer, num);
1431 uintptr_t last_offset = 0;
1433 for (int i = 0; i < num; ++i) {
1434 emit_value (logbuffer, offsets [i] - last_offset);
1435 last_offset = offsets [i];
1436 emit_obj (logbuffer, refs [i]);
1439 EXIT_LOG_EXPLICIT (DO_SEND);
1444 static unsigned int hs_mode_ms = 0;
1445 static unsigned int hs_mode_gc = 0;
1446 static unsigned int hs_mode_ondemand = 0;
1447 static unsigned int gc_count = 0;
1448 static uint64_t last_hs_time = 0;
1449 static gboolean do_heap_walk = FALSE;
1450 static gboolean ignore_heap_events;
1453 gc_roots (MonoProfiler *prof, MonoObject *const *objects, const MonoProfilerGCRootType *root_types, const uintptr_t *extra_info, uint64_t num)
1455 if (ignore_heap_events)
1458 ENTER_LOG (&heap_roots_ctr, logbuffer,
1459 EVENT_SIZE /* event */ +
1460 LEB128_SIZE /* num */ +
1461 LEB128_SIZE /* collections */ +
1463 LEB128_SIZE /* object */ +
1464 LEB128_SIZE /* root type */ +
1465 LEB128_SIZE /* extra info */
1469 emit_event (logbuffer, TYPE_HEAP_ROOT | TYPE_HEAP);
1470 emit_value (logbuffer, num);
1471 emit_value (logbuffer, mono_gc_collection_count (mono_gc_max_generation ()));
1473 for (int i = 0; i < num; ++i) {
1474 emit_obj (logbuffer, objects [i]);
1475 emit_byte (logbuffer, root_types [i]);
1476 emit_value (logbuffer, extra_info [i]);
1479 EXIT_LOG_EXPLICIT (DO_SEND);
1484 trigger_on_demand_heapshot (void)
1486 if (heapshot_requested)
1487 mono_gc_collect (mono_gc_max_generation ());
1490 #define ALL_GC_EVENTS_MASK (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_EVENTS | PROFLOG_HEAPSHOT_FEATURE)
1493 gc_event (MonoProfiler *profiler, MonoProfilerGCEvent ev, uint32_t generation)
1495 if (ev == MONO_GC_EVENT_START) {
1496 uint64_t now = current_time ();
1498 if (hs_mode_ms && (now - last_hs_time) / 1000 * 1000 >= hs_mode_ms)
1499 do_heap_walk = TRUE;
1500 else if (hs_mode_gc && !(gc_count % hs_mode_gc))
1501 do_heap_walk = TRUE;
1502 else if (hs_mode_ondemand)
1503 do_heap_walk = heapshot_requested;
1504 else if (!hs_mode_ms && !hs_mode_gc && generation == mono_gc_max_generation ())
1505 do_heap_walk = TRUE;
1507 //If using heapshot, ignore events for collections we don't care
1508 if (ENABLED (PROFLOG_HEAPSHOT_FEATURE)) {
1509 // Ignore events generated during the collection itself (IE GC ROOTS)
1510 ignore_heap_events = !do_heap_walk;
1515 if (ENABLED (PROFLOG_GC_EVENTS)) {
1516 ENTER_LOG (&gc_events_ctr, logbuffer,
1517 EVENT_SIZE /* event */ +
1518 BYTE_SIZE /* gc event */ +
1519 BYTE_SIZE /* generation */
1522 emit_event (logbuffer, TYPE_GC_EVENT | TYPE_GC);
1523 emit_byte (logbuffer, ev);
1524 emit_byte (logbuffer, generation);
1526 EXIT_LOG_EXPLICIT (NO_SEND);
1530 case MONO_GC_EVENT_START:
1531 if (generation == mono_gc_max_generation ())
1535 case MONO_GC_EVENT_PRE_STOP_WORLD_LOCKED:
1537 * Ensure that no thread can be in the middle of writing to
1538 * a buffer when the world stops...
1540 buffer_lock_excl ();
1542 case MONO_GC_EVENT_POST_STOP_WORLD:
1544 * ... So that we now have a consistent view of all buffers.
1545 * This allows us to flush them. We need to do this because
1546 * they may contain object allocation events that need to be
1547 * committed to the log file before any object move events
1548 * that will be produced during this GC.
1550 if (ENABLED (ALL_GC_EVENTS_MASK))
1551 sync_point (SYNC_POINT_WORLD_STOP);
1554 * All heap events are surrounded by a HEAP_START and a HEAP_ENV event.
1555 * Right now, that's the case for GC Moves, GC Roots or heapshots.
1557 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1558 ENTER_LOG (&heap_starts_ctr, logbuffer,
1559 EVENT_SIZE /* event */
1562 emit_event (logbuffer, TYPE_HEAP_START | TYPE_HEAP);
1564 EXIT_LOG_EXPLICIT (DO_SEND);
1568 case MONO_GC_EVENT_PRE_START_WORLD:
1569 if (do_heap_shot && do_heap_walk)
1570 mono_gc_walk_heap (0, gc_reference, NULL);
1572 /* Matching HEAP_END to the HEAP_START from above */
1573 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1574 ENTER_LOG (&heap_ends_ctr, logbuffer,
1575 EVENT_SIZE /* event */
1578 emit_event (logbuffer, TYPE_HEAP_END | TYPE_HEAP);
1580 EXIT_LOG_EXPLICIT (DO_SEND);
1583 if (do_heap_shot && do_heap_walk) {
1584 do_heap_walk = FALSE;
1585 heapshot_requested = 0;
1586 last_hs_time = current_time ();
1590 * Similarly, we must now make sure that any object moves
1591 * written to the GC thread's buffer are flushed. Otherwise,
1592 * object allocation events for certain addresses could come
1593 * after the move events that made those addresses available.
1595 if (ENABLED (ALL_GC_EVENTS_MASK))
1596 sync_point_mark (SYNC_POINT_WORLD_START);
1598 case MONO_GC_EVENT_POST_START_WORLD_UNLOCKED:
1600 * Finally, it is safe to allow other threads to write to
1601 * their buffers again.
1603 buffer_unlock_excl ();
1611 gc_resize (MonoProfiler *profiler, uintptr_t new_size)
1613 ENTER_LOG (&gc_resizes_ctr, logbuffer,
1614 EVENT_SIZE /* event */ +
1615 LEB128_SIZE /* new size */
1618 emit_event (logbuffer, TYPE_GC_RESIZE | TYPE_GC);
1619 emit_value (logbuffer, new_size);
1621 EXIT_LOG_EXPLICIT (DO_SEND);
1626 MonoMethod* methods [MAX_FRAMES];
1627 int32_t il_offsets [MAX_FRAMES];
1628 int32_t native_offsets [MAX_FRAMES];
1631 static int num_frames = MAX_FRAMES;
1634 walk_stack (MonoMethod *method, int32_t native_offset, int32_t il_offset, mono_bool managed, void* data)
1636 FrameData *frame = (FrameData *)data;
1637 if (method && frame->count < num_frames) {
1638 frame->il_offsets [frame->count] = il_offset;
1639 frame->native_offsets [frame->count] = native_offset;
1640 frame->methods [frame->count++] = method;
1641 //printf ("In %d %s at %d (native: %d)\n", frame->count, mono_method_get_name (method), il_offset, native_offset);
1643 return frame->count == num_frames;
1647 * a note about stack walks: they can cause more profiler events to fire,
1648 * so we need to make sure they don't happen after we started emitting an
1649 * event, hence the collect_bt/emit_bt split.
1652 collect_bt (FrameData *data)
1655 mono_stack_walk_no_il (walk_stack, data);
1659 emit_bt (MonoProfiler *prof, LogBuffer *logbuffer, FrameData *data)
1661 if (data->count > num_frames)
1662 printf ("bad num frames: %d\n", data->count);
1664 emit_value (logbuffer, data->count);
1667 emit_method (logbuffer, data->methods [--data->count]);
1671 gc_alloc (MonoProfiler *prof, MonoObject *obj)
1673 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_ALLOC_BT : 0;
1675 uintptr_t len = mono_object_get_size (obj);
1676 /* account for object alignment in the heap */
1683 ENTER_LOG (&gc_allocs_ctr, logbuffer,
1684 EVENT_SIZE /* event */ +
1685 LEB128_SIZE /* klass */ +
1686 LEB128_SIZE /* obj */ +
1687 LEB128_SIZE /* size */ +
1689 LEB128_SIZE /* count */ +
1691 LEB128_SIZE /* method */
1696 emit_event (logbuffer, do_bt | TYPE_ALLOC);
1697 emit_ptr (logbuffer, mono_object_get_class (obj));
1698 emit_obj (logbuffer, obj);
1699 emit_value (logbuffer, len);
1702 emit_bt (prof, logbuffer, &data);
1708 gc_moves (MonoProfiler *prof, MonoObject *const *objects, uint64_t num)
1710 ENTER_LOG (&gc_moves_ctr, logbuffer,
1711 EVENT_SIZE /* event */ +
1712 LEB128_SIZE /* num */ +
1714 LEB128_SIZE /* object */
1718 emit_event (logbuffer, TYPE_GC_MOVE | TYPE_GC);
1719 emit_value (logbuffer, num);
1721 for (int i = 0; i < num; ++i)
1722 emit_obj (logbuffer, objects [i]);
1724 EXIT_LOG_EXPLICIT (DO_SEND);
1728 gc_handle (MonoProfiler *prof, int op, MonoGCHandleType type, uint32_t handle, MonoObject *obj)
1730 int do_bt = nocalls && InterlockedRead (&runtime_inited) && !notraces;
1736 gint32 *ctr = op == MONO_PROFILER_GC_HANDLE_CREATED ? &gc_handle_creations_ctr : &gc_handle_deletions_ctr;
1738 ENTER_LOG (ctr, logbuffer,
1739 EVENT_SIZE /* event */ +
1740 LEB128_SIZE /* type */ +
1741 LEB128_SIZE /* handle */ +
1742 (op == MONO_PROFILER_GC_HANDLE_CREATED ? (
1743 LEB128_SIZE /* obj */
1746 LEB128_SIZE /* count */ +
1748 LEB128_SIZE /* method */
1753 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1754 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_CREATED_BT : TYPE_GC_HANDLE_CREATED) | TYPE_GC);
1755 else if (op == MONO_PROFILER_GC_HANDLE_DESTROYED)
1756 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_DESTROYED_BT : TYPE_GC_HANDLE_DESTROYED) | TYPE_GC);
1758 g_assert_not_reached ();
1760 emit_value (logbuffer, type);
1761 emit_value (logbuffer, handle);
1763 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1764 emit_obj (logbuffer, obj);
1767 emit_bt (prof, logbuffer, &data);
1773 gc_handle_created (MonoProfiler *prof, uint32_t handle, MonoGCHandleType type, MonoObject *obj)
1775 gc_handle (prof, MONO_PROFILER_GC_HANDLE_CREATED, type, handle, obj);
1779 gc_handle_deleted (MonoProfiler *prof, uint32_t handle, MonoGCHandleType type)
1781 gc_handle (prof, MONO_PROFILER_GC_HANDLE_DESTROYED, type, handle, NULL);
1785 finalize_begin (MonoProfiler *prof)
1787 ENTER_LOG (&finalize_begins_ctr, buf,
1788 EVENT_SIZE /* event */
1791 emit_event (buf, TYPE_GC_FINALIZE_START | TYPE_GC);
1797 finalize_end (MonoProfiler *prof)
1799 trigger_on_demand_heapshot ();
1800 if (ENABLED (PROFLOG_FINALIZATION_EVENTS)) {
1801 ENTER_LOG (&finalize_ends_ctr, buf,
1802 EVENT_SIZE /* event */
1805 emit_event (buf, TYPE_GC_FINALIZE_END | TYPE_GC);
1812 finalize_object_begin (MonoProfiler *prof, MonoObject *obj)
1814 ENTER_LOG (&finalize_object_begins_ctr, buf,
1815 EVENT_SIZE /* event */ +
1816 LEB128_SIZE /* obj */
1819 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_START | TYPE_GC);
1820 emit_obj (buf, obj);
1826 finalize_object_end (MonoProfiler *prof, MonoObject *obj)
1828 ENTER_LOG (&finalize_object_ends_ctr, buf,
1829 EVENT_SIZE /* event */ +
1830 LEB128_SIZE /* obj */
1833 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_END | TYPE_GC);
1834 emit_obj (buf, obj);
1840 push_nesting (char *p, MonoClass *klass)
1845 nesting = mono_class_get_nesting_type (klass);
1847 p = push_nesting (p, nesting);
1851 name = mono_class_get_name (klass);
1852 nspace = mono_class_get_namespace (klass);
1855 p += strlen (nspace);
1865 type_name (MonoClass *klass)
1869 push_nesting (buf, klass);
1870 p = (char *) g_malloc (strlen (buf) + 1);
1876 image_loaded (MonoProfiler *prof, MonoImage *image)
1878 const char *name = mono_image_get_filename (image);
1879 int nlen = strlen (name) + 1;
1881 ENTER_LOG (&image_loads_ctr, logbuffer,
1882 EVENT_SIZE /* event */ +
1883 BYTE_SIZE /* type */ +
1884 LEB128_SIZE /* image */ +
1888 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1889 emit_byte (logbuffer, TYPE_IMAGE);
1890 emit_ptr (logbuffer, image);
1891 memcpy (logbuffer->cursor, name, nlen);
1892 logbuffer->cursor += nlen;
1898 image_unloaded (MonoProfiler *prof, MonoImage *image)
1900 const char *name = mono_image_get_filename (image);
1901 int nlen = strlen (name) + 1;
1903 ENTER_LOG (&image_unloads_ctr, logbuffer,
1904 EVENT_SIZE /* event */ +
1905 BYTE_SIZE /* type */ +
1906 LEB128_SIZE /* image */ +
1910 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1911 emit_byte (logbuffer, TYPE_IMAGE);
1912 emit_ptr (logbuffer, image);
1913 memcpy (logbuffer->cursor, name, nlen);
1914 logbuffer->cursor += nlen;
1920 assembly_loaded (MonoProfiler *prof, MonoAssembly *assembly)
1922 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1923 int nlen = strlen (name) + 1;
1924 MonoImage *image = mono_assembly_get_image (assembly);
1926 ENTER_LOG (&assembly_loads_ctr, logbuffer,
1927 EVENT_SIZE /* event */ +
1928 BYTE_SIZE /* type */ +
1929 LEB128_SIZE /* assembly */ +
1930 LEB128_SIZE /* image */ +
1934 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1935 emit_byte (logbuffer, TYPE_ASSEMBLY);
1936 emit_ptr (logbuffer, assembly);
1937 emit_ptr (logbuffer, image);
1938 memcpy (logbuffer->cursor, name, nlen);
1939 logbuffer->cursor += nlen;
1947 assembly_unloaded (MonoProfiler *prof, MonoAssembly *assembly)
1949 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1950 int nlen = strlen (name) + 1;
1951 MonoImage *image = mono_assembly_get_image (assembly);
1953 ENTER_LOG (&assembly_unloads_ctr, logbuffer,
1954 EVENT_SIZE /* event */ +
1955 BYTE_SIZE /* type */ +
1956 LEB128_SIZE /* assembly */ +
1957 LEB128_SIZE /* image */ +
1961 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1962 emit_byte (logbuffer, TYPE_ASSEMBLY);
1963 emit_ptr (logbuffer, assembly);
1964 emit_ptr (logbuffer, image);
1965 memcpy (logbuffer->cursor, name, nlen);
1966 logbuffer->cursor += nlen;
1974 class_loaded (MonoProfiler *prof, MonoClass *klass)
1978 if (InterlockedRead (&runtime_inited))
1979 name = mono_type_get_name (mono_class_get_type (klass));
1981 name = type_name (klass);
1983 int nlen = strlen (name) + 1;
1984 MonoImage *image = mono_class_get_image (klass);
1986 ENTER_LOG (&class_loads_ctr, logbuffer,
1987 EVENT_SIZE /* event */ +
1988 BYTE_SIZE /* type */ +
1989 LEB128_SIZE /* klass */ +
1990 LEB128_SIZE /* image */ +
1994 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1995 emit_byte (logbuffer, TYPE_CLASS);
1996 emit_ptr (logbuffer, klass);
1997 emit_ptr (logbuffer, image);
1998 memcpy (logbuffer->cursor, name, nlen);
1999 logbuffer->cursor += nlen;
2009 static void process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method);
2012 method_enter (MonoProfiler *prof, MonoMethod *method)
2014 process_method_enter_coverage (prof, method);
2016 if (!only_coverage && get_thread ()->call_depth++ <= max_call_depth) {
2017 ENTER_LOG (&method_entries_ctr, logbuffer,
2018 EVENT_SIZE /* event */ +
2019 LEB128_SIZE /* method */
2022 emit_event (logbuffer, TYPE_ENTER | TYPE_METHOD);
2023 emit_method (logbuffer, method);
2030 method_leave (MonoProfiler *prof, MonoMethod *method)
2032 if (!only_coverage && --get_thread ()->call_depth <= max_call_depth) {
2033 ENTER_LOG (&method_exits_ctr, logbuffer,
2034 EVENT_SIZE /* event */ +
2035 LEB128_SIZE /* method */
2038 emit_event (logbuffer, TYPE_LEAVE | TYPE_METHOD);
2039 emit_method (logbuffer, method);
2046 method_exc_leave (MonoProfiler *prof, MonoMethod *method, MonoObject *exc)
2048 if (!only_coverage && !nocalls && --get_thread ()->call_depth <= max_call_depth) {
2049 ENTER_LOG (&method_exception_exits_ctr, logbuffer,
2050 EVENT_SIZE /* event */ +
2051 LEB128_SIZE /* method */
2054 emit_event (logbuffer, TYPE_EXC_LEAVE | TYPE_METHOD);
2055 emit_method (logbuffer, method);
2061 static MonoProfilerCallInstrumentationFlags
2062 method_filter (MonoProfiler *prof, MonoMethod *method)
2064 return MONO_PROFILER_CALL_INSTRUMENTATION_PROLOGUE | MONO_PROFILER_CALL_INSTRUMENTATION_EPILOGUE;
2068 method_jitted (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *ji)
2072 register_method_local (method, ji);
2078 code_buffer_new (MonoProfiler *prof, const mono_byte *buffer, uint64_t size, MonoProfilerCodeBufferType type, const void *data)
2083 if (type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE) {
2084 name = (const char *) data;
2085 nlen = strlen (name) + 1;
2091 ENTER_LOG (&code_buffers_ctr, logbuffer,
2092 EVENT_SIZE /* event */ +
2093 BYTE_SIZE /* type */ +
2094 LEB128_SIZE /* buffer */ +
2095 LEB128_SIZE /* size */ +
2101 emit_event (logbuffer, TYPE_JITHELPER | TYPE_RUNTIME);
2102 emit_byte (logbuffer, type);
2103 emit_ptr (logbuffer, buffer);
2104 emit_value (logbuffer, size);
2107 memcpy (logbuffer->cursor, name, nlen);
2108 logbuffer->cursor += nlen;
2115 throw_exc (MonoProfiler *prof, MonoObject *object)
2117 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_THROW_BT : 0;
2123 ENTER_LOG (&exception_throws_ctr, logbuffer,
2124 EVENT_SIZE /* event */ +
2125 LEB128_SIZE /* object */ +
2127 LEB128_SIZE /* count */ +
2129 LEB128_SIZE /* method */
2134 emit_event (logbuffer, do_bt | TYPE_EXCEPTION);
2135 emit_obj (logbuffer, object);
2138 emit_bt (prof, logbuffer, &data);
2144 clause_exc (MonoProfiler *prof, MonoMethod *method, uint32_t clause_num, MonoExceptionEnum clause_type, MonoObject *exc)
2146 ENTER_LOG (&exception_clauses_ctr, logbuffer,
2147 EVENT_SIZE /* event */ +
2148 BYTE_SIZE /* clause type */ +
2149 LEB128_SIZE /* clause num */ +
2150 LEB128_SIZE /* method */
2153 emit_event (logbuffer, TYPE_EXCEPTION | TYPE_CLAUSE);
2154 emit_byte (logbuffer, clause_type);
2155 emit_value (logbuffer, clause_num);
2156 emit_method (logbuffer, method);
2157 emit_obj (logbuffer, exc);
2163 monitor_event (MonoProfiler *profiler, MonoObject *object, MonoProfilerMonitorEvent ev)
2165 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_MONITOR_BT : 0;
2171 ENTER_LOG (&monitor_events_ctr, logbuffer,
2172 EVENT_SIZE /* event */ +
2173 BYTE_SIZE /* ev */ +
2174 LEB128_SIZE /* object */ +
2176 LEB128_SIZE /* count */ +
2178 LEB128_SIZE /* method */
2183 emit_event (logbuffer, do_bt | TYPE_MONITOR);
2184 emit_byte (logbuffer, ev);
2185 emit_obj (logbuffer, object);
2188 emit_bt (profiler, logbuffer, &data);
2194 monitor_contention (MonoProfiler *prof, MonoObject *object)
2196 monitor_event (prof, object, MONO_PROFILER_MONITOR_CONTENTION);
2200 monitor_acquired (MonoProfiler *prof, MonoObject *object)
2202 monitor_event (prof, object, MONO_PROFILER_MONITOR_DONE);
2206 monitor_failed (MonoProfiler *prof, MonoObject *object)
2208 monitor_event (prof, object, MONO_PROFILER_MONITOR_FAIL);
2212 thread_start (MonoProfiler *prof, uintptr_t tid)
2214 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2215 ENTER_LOG (&thread_starts_ctr, logbuffer,
2216 EVENT_SIZE /* event */ +
2217 BYTE_SIZE /* type */ +
2218 LEB128_SIZE /* tid */
2221 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2222 emit_byte (logbuffer, TYPE_THREAD);
2223 emit_ptr (logbuffer, (void*) tid);
2230 thread_end (MonoProfiler *prof, uintptr_t tid)
2232 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2233 ENTER_LOG (&thread_ends_ctr, logbuffer,
2234 EVENT_SIZE /* event */ +
2235 BYTE_SIZE /* type */ +
2236 LEB128_SIZE /* tid */
2239 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2240 emit_byte (logbuffer, TYPE_THREAD);
2241 emit_ptr (logbuffer, (void*) tid);
2243 EXIT_LOG_EXPLICIT (NO_SEND);
2246 MonoProfilerThread *thread = get_thread ();
2248 thread->ended = TRUE;
2249 remove_thread (thread);
2251 PROF_TLS_SET (NULL);
2255 thread_name (MonoProfiler *prof, uintptr_t tid, const char *name)
2257 int len = strlen (name) + 1;
2259 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2260 ENTER_LOG (&thread_names_ctr, logbuffer,
2261 EVENT_SIZE /* event */ +
2262 BYTE_SIZE /* type */ +
2263 LEB128_SIZE /* tid */ +
2267 emit_event (logbuffer, TYPE_METADATA);
2268 emit_byte (logbuffer, TYPE_THREAD);
2269 emit_ptr (logbuffer, (void*)tid);
2270 memcpy (logbuffer->cursor, name, len);
2271 logbuffer->cursor += len;
2278 domain_loaded (MonoProfiler *prof, MonoDomain *domain)
2280 ENTER_LOG (&domain_loads_ctr, logbuffer,
2281 EVENT_SIZE /* event */ +
2282 BYTE_SIZE /* type */ +
2283 LEB128_SIZE /* domain id */
2286 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2287 emit_byte (logbuffer, TYPE_DOMAIN);
2288 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2294 domain_unloaded (MonoProfiler *prof, MonoDomain *domain)
2296 ENTER_LOG (&domain_unloads_ctr, logbuffer,
2297 EVENT_SIZE /* event */ +
2298 BYTE_SIZE /* type */ +
2299 LEB128_SIZE /* domain id */
2302 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2303 emit_byte (logbuffer, TYPE_DOMAIN);
2304 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2310 domain_name (MonoProfiler *prof, MonoDomain *domain, const char *name)
2312 int nlen = strlen (name) + 1;
2314 ENTER_LOG (&domain_names_ctr, logbuffer,
2315 EVENT_SIZE /* event */ +
2316 BYTE_SIZE /* type */ +
2317 LEB128_SIZE /* domain id */ +
2321 emit_event (logbuffer, TYPE_METADATA);
2322 emit_byte (logbuffer, TYPE_DOMAIN);
2323 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2324 memcpy (logbuffer->cursor, name, nlen);
2325 logbuffer->cursor += nlen;
2331 context_loaded (MonoProfiler *prof, MonoAppContext *context)
2333 ENTER_LOG (&context_loads_ctr, logbuffer,
2334 EVENT_SIZE /* event */ +
2335 BYTE_SIZE /* type */ +
2336 LEB128_SIZE /* context id */ +
2337 LEB128_SIZE /* domain id */
2340 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2341 emit_byte (logbuffer, TYPE_CONTEXT);
2342 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2343 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2349 context_unloaded (MonoProfiler *prof, MonoAppContext *context)
2351 ENTER_LOG (&context_unloads_ctr, logbuffer,
2352 EVENT_SIZE /* event */ +
2353 BYTE_SIZE /* type */ +
2354 LEB128_SIZE /* context id */ +
2355 LEB128_SIZE /* domain id */
2358 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2359 emit_byte (logbuffer, TYPE_CONTEXT);
2360 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2361 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2374 MonoLockFreeQueueNode node;
2380 AsyncFrameInfo frames [MONO_ZERO_LEN_ARRAY];
2384 async_walk_stack (MonoMethod *method, MonoDomain *domain, void *base_address, int offset, void *data)
2386 SampleHit *sample = (SampleHit *) data;
2388 if (sample->count < num_frames) {
2389 int i = sample->count;
2391 sample->frames [i].method = method;
2392 sample->frames [i].domain = domain;
2393 sample->frames [i].base_address = base_address;
2394 sample->frames [i].offset = offset;
2399 return sample->count == num_frames;
2402 #define SAMPLE_SLOT_SIZE(FRAMES) (sizeof (SampleHit) + sizeof (AsyncFrameInfo) * (FRAMES - MONO_ZERO_LEN_ARRAY))
2403 #define SAMPLE_BLOCK_SIZE (mono_pagesize ())
2406 enqueue_sample_hit (gpointer p)
2408 SampleHit *sample = p;
2410 mono_lock_free_queue_node_unpoison (&sample->node);
2411 mono_lock_free_queue_enqueue (&sample->prof->dumper_queue, &sample->node);
2412 mono_os_sem_post (&sample->prof->dumper_queue_sem);
2416 mono_sample_hit (MonoProfiler *profiler, const mono_byte *ip, const void *context)
2419 * Please note: We rely on the runtime loading the profiler with
2420 * MONO_DL_EAGER (RTLD_NOW) so that references to runtime functions within
2421 * this function (and its siblings) are resolved when the profiler is
2422 * loaded. Otherwise, we would potentially invoke the dynamic linker when
2423 * invoking runtime functions, which is not async-signal-safe.
2426 if (InterlockedRead (&in_shutdown))
2429 SampleHit *sample = (SampleHit *) mono_lock_free_queue_dequeue (&profiler->sample_reuse_queue);
2433 * If we're out of reusable sample events and we're not allowed to
2434 * allocate more, we have no choice but to drop the event.
2436 if (InterlockedRead (&sample_allocations_ctr) >= max_allocated_sample_hits)
2439 sample = mono_lock_free_alloc (&profiler->sample_allocator);
2440 sample->prof = profiler;
2441 mono_lock_free_queue_node_init (&sample->node, TRUE);
2443 InterlockedIncrement (&sample_allocations_ctr);
2447 mono_stack_walk_async_safe (&async_walk_stack, (void *) context, sample);
2449 sample->time = current_time ();
2450 sample->tid = thread_id ();
2453 mono_thread_hazardous_try_free (sample, enqueue_sample_hit);
2456 static uintptr_t *code_pages = 0;
2457 static int num_code_pages = 0;
2458 static int size_code_pages = 0;
2459 #define CPAGE_SHIFT (9)
2460 #define CPAGE_SIZE (1 << CPAGE_SHIFT)
2461 #define CPAGE_MASK (~(CPAGE_SIZE - 1))
2462 #define CPAGE_ADDR(p) ((p) & CPAGE_MASK)
2465 add_code_page (uintptr_t *hash, uintptr_t hsize, uintptr_t page)
2468 uintptr_t start_pos;
2469 start_pos = (page >> CPAGE_SHIFT) % hsize;
2472 if (hash [i] && CPAGE_ADDR (hash [i]) == CPAGE_ADDR (page)) {
2474 } else if (!hash [i]) {
2481 } while (i != start_pos);
2482 /* should not happen */
2483 printf ("failed code page store\n");
2488 add_code_pointer (uintptr_t ip)
2491 if (num_code_pages * 2 >= size_code_pages) {
2493 uintptr_t old_size = size_code_pages;
2494 size_code_pages *= 2;
2495 if (size_code_pages == 0)
2496 size_code_pages = 16;
2497 n = (uintptr_t *) g_calloc (sizeof (uintptr_t) * size_code_pages, 1);
2498 for (i = 0; i < old_size; ++i) {
2500 add_code_page (n, size_code_pages, code_pages [i]);
2503 g_free (code_pages);
2506 num_code_pages += add_code_page (code_pages, size_code_pages, ip & CPAGE_MASK);
2509 /* ELF code crashes on some systems. */
2510 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2513 dump_ubin (MonoProfiler *prof, const char *filename, uintptr_t load_addr, uint64_t offset, uintptr_t size)
2515 int len = strlen (filename) + 1;
2517 ENTER_LOG (&sample_ubins_ctr, logbuffer,
2518 EVENT_SIZE /* event */ +
2519 LEB128_SIZE /* load address */ +
2520 LEB128_SIZE /* offset */ +
2521 LEB128_SIZE /* size */ +
2522 nlen /* file name */
2525 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_UBIN);
2526 emit_ptr (logbuffer, load_addr);
2527 emit_uvalue (logbuffer, offset);
2528 emit_uvalue (logbuffer, size);
2529 memcpy (logbuffer->cursor, filename, len);
2530 logbuffer->cursor += len;
2532 EXIT_LOG_EXPLICIT (DO_SEND);
2537 dump_usym (MonoProfiler *prof, const char *name, uintptr_t value, uintptr_t size)
2539 int len = strlen (name) + 1;
2541 ENTER_LOG (&sample_usyms_ctr, logbuffer,
2542 EVENT_SIZE /* event */ +
2543 LEB128_SIZE /* value */ +
2544 LEB128_SIZE /* size */ +
2548 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_USYM);
2549 emit_ptr (logbuffer, (void*)value);
2550 emit_value (logbuffer, size);
2551 memcpy (logbuffer->cursor, name, len);
2552 logbuffer->cursor += len;
2554 EXIT_LOG_EXPLICIT (DO_SEND);
2557 /* ELF code crashes on some systems. */
2558 //#if defined(ELFMAG0)
2561 #if SIZEOF_VOID_P == 4
2562 #define ELF_WSIZE 32
2564 #define ELF_WSIZE 64
2567 #define ElfW(type) _ElfW (Elf, ELF_WSIZE, type)
2568 #define _ElfW(e,w,t) _ElfW_1 (e, w, _##t)
2569 #define _ElfW_1(e,w,t) e##w##t
2573 dump_elf_symbols (MonoProfiler *prof, ElfW(Sym) *symbols, int num_symbols, const char *strtab, void *load_addr)
2576 for (i = 0; i < num_symbols; ++i) {
2578 sym = strtab + symbols [i].st_name;
2579 if (!symbols [i].st_name || !symbols [i].st_size || (symbols [i].st_info & 0xf) != STT_FUNC)
2581 //printf ("symbol %s at %d\n", sym, symbols [i].st_value);
2582 dump_usym (sym, (uintptr_t)load_addr + symbols [i].st_value, symbols [i].st_size);
2587 read_elf_symbols (MonoProfiler *prof, const char *filename, void *load_addr)
2594 ElfW(Shdr) *sheader;
2595 ElfW(Shdr) *shstrtabh;
2596 ElfW(Shdr) *symtabh = NULL;
2597 ElfW(Shdr) *strtabh = NULL;
2598 ElfW(Sym) *symbols = NULL;
2602 fd = open (filename, O_RDONLY);
2605 if (fstat (fd, &statb) != 0) {
2609 file_size = statb.st_size;
2610 data = mmap (NULL, file_size, PROT_READ, MAP_PRIVATE, fd, 0);
2612 if (data == MAP_FAILED)
2615 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2616 header->e_ident [EI_MAG1] != ELFMAG1 ||
2617 header->e_ident [EI_MAG2] != ELFMAG2 ||
2618 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2619 munmap (data, file_size);
2622 sheader = (void*)((char*)data + header->e_shoff);
2623 shstrtabh = (void*)((char*)sheader + (header->e_shentsize * header->e_shstrndx));
2624 strtab = (const char*)data + shstrtabh->sh_offset;
2625 for (i = 0; i < header->e_shnum; ++i) {
2626 //printf ("section header: %d\n", sheader->sh_type);
2627 if (sheader->sh_type == SHT_SYMTAB) {
2629 strtabh = (void*)((char*)data + header->e_shoff + sheader->sh_link * header->e_shentsize);
2630 /*printf ("symtab section header: %d, .strstr: %d\n", i, sheader->sh_link);*/
2633 sheader = (void*)((char*)sheader + header->e_shentsize);
2635 if (!symtabh || !strtabh) {
2636 munmap (data, file_size);
2639 strtab = (const char*)data + strtabh->sh_offset;
2640 num_symbols = symtabh->sh_size / symtabh->sh_entsize;
2641 symbols = (void*)((char*)data + symtabh->sh_offset);
2642 dump_elf_symbols (symbols, num_symbols, strtab, load_addr);
2643 munmap (data, file_size);
2648 /* ELF code crashes on some systems. */
2649 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2652 elf_dl_callback (struct dl_phdr_info *info, size_t size, void *data)
2654 MonoProfiler *prof = data;
2656 const char *filename;
2658 char *a = (void*)info->dlpi_addr;
2660 ElfW(Dyn) *dyn = NULL;
2661 ElfW(Sym) *symtab = NULL;
2662 ElfW(Word) *hash_table = NULL;
2663 ElfW(Ehdr) *header = NULL;
2664 const char* strtab = NULL;
2665 for (obj = prof->binary_objects; obj; obj = obj->next) {
2669 filename = info->dlpi_name;
2672 if (!info->dlpi_addr && !filename [0]) {
2673 int l = readlink ("/proc/self/exe", buf, sizeof (buf) - 1);
2679 obj = g_calloc (sizeof (BinaryObject), 1);
2680 obj->addr = (void*)info->dlpi_addr;
2681 obj->name = pstrdup (filename);
2682 obj->next = prof->binary_objects;
2683 prof->binary_objects = obj;
2684 //printf ("loaded file: %s at %p, segments: %d\n", filename, (void*)info->dlpi_addr, info->dlpi_phnum);
2686 for (i = 0; i < info->dlpi_phnum; ++i) {
2687 //printf ("segment type %d file offset: %d, size: %d\n", info->dlpi_phdr[i].p_type, info->dlpi_phdr[i].p_offset, info->dlpi_phdr[i].p_memsz);
2688 if (info->dlpi_phdr[i].p_type == PT_LOAD && !header) {
2689 header = (ElfW(Ehdr)*)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2690 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2691 header->e_ident [EI_MAG1] != ELFMAG1 ||
2692 header->e_ident [EI_MAG2] != ELFMAG2 ||
2693 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2696 dump_ubin (prof, filename, info->dlpi_addr + info->dlpi_phdr[i].p_vaddr, info->dlpi_phdr[i].p_offset, info->dlpi_phdr[i].p_memsz);
2697 } else if (info->dlpi_phdr[i].p_type == PT_DYNAMIC) {
2698 dyn = (ElfW(Dyn) *)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2701 if (read_elf_symbols (prof, filename, (void*)info->dlpi_addr))
2703 if (!info->dlpi_name || !info->dlpi_name[0])
2707 for (i = 0; dyn [i].d_tag != DT_NULL; ++i) {
2708 if (dyn [i].d_tag == DT_SYMTAB) {
2709 if (symtab && do_debug)
2710 printf ("multiple symtabs: %d\n", i);
2711 symtab = (ElfW(Sym) *)(a + dyn [i].d_un.d_ptr);
2712 } else if (dyn [i].d_tag == DT_HASH) {
2713 hash_table = (ElfW(Word) *)(a + dyn [i].d_un.d_ptr);
2714 } else if (dyn [i].d_tag == DT_STRTAB) {
2715 strtab = (const char*)(a + dyn [i].d_un.d_ptr);
2720 num_sym = hash_table [1];
2721 dump_elf_symbols (prof, symtab, num_sym, strtab, (void*)info->dlpi_addr);
2726 load_binaries (MonoProfiler *prof)
2728 dl_iterate_phdr (elf_dl_callback, prof);
2733 load_binaries (MonoProfiler *prof)
2740 symbol_for (uintptr_t code)
2743 void *ip = (void*)code;
2745 if (dladdr (ip, &di)) {
2747 return di.dli_sname;
2750 names = backtrace_symbols (&ip, 1);
2752 const char* p = names [0];
2763 dump_unmanaged_coderefs (MonoProfiler *prof)
2766 const char* last_symbol;
2767 uintptr_t addr, page_end;
2769 if (load_binaries (prof))
2771 for (i = 0; i < size_code_pages; ++i) {
2773 if (!code_pages [i] || code_pages [i] & 1)
2776 addr = CPAGE_ADDR (code_pages [i]);
2777 page_end = addr + CPAGE_SIZE;
2778 code_pages [i] |= 1;
2779 /* we dump the symbols for the whole page */
2780 for (; addr < page_end; addr += 16) {
2781 sym = symbol_for (addr);
2782 if (sym && sym == last_symbol)
2787 dump_usym (prof, sym, addr, 0); /* let's not guess the size */
2788 //printf ("found symbol at %p: %s\n", (void*)addr, sym);
2793 typedef struct MonoCounterAgent {
2794 MonoCounter *counter;
2795 // MonoCounterAgent specific data :
2800 struct MonoCounterAgent *next;
2803 static MonoCounterAgent* counters;
2804 static int counters_index = 1;
2805 static mono_mutex_t counters_mutex;
2808 counters_add_agent (MonoCounter *counter)
2810 if (InterlockedRead (&in_shutdown))
2813 MonoCounterAgent *agent, *item;
2815 mono_os_mutex_lock (&counters_mutex);
2817 for (agent = counters; agent; agent = agent->next) {
2818 if (agent->counter == counter) {
2819 agent->value_size = 0;
2821 g_free (agent->value);
2822 agent->value = NULL;
2828 agent = (MonoCounterAgent *) g_malloc (sizeof (MonoCounterAgent));
2829 agent->counter = counter;
2830 agent->value = NULL;
2831 agent->value_size = 0;
2832 agent->index = counters_index++;
2846 mono_os_mutex_unlock (&counters_mutex);
2850 counters_init_foreach_callback (MonoCounter *counter, gpointer data)
2852 counters_add_agent (counter);
2857 counters_init (MonoProfiler *profiler)
2859 mono_os_mutex_init (&counters_mutex);
2861 mono_counters_on_register (&counters_add_agent);
2862 mono_counters_foreach (counters_init_foreach_callback, NULL);
2866 counters_emit (MonoProfiler *profiler)
2868 MonoCounterAgent *agent;
2871 EVENT_SIZE /* event */ +
2872 LEB128_SIZE /* len */
2875 mono_os_mutex_lock (&counters_mutex);
2877 for (agent = counters; agent; agent = agent->next) {
2882 LEB128_SIZE /* section */ +
2883 strlen (mono_counter_get_name (agent->counter)) + 1 /* name */ +
2884 BYTE_SIZE /* type */ +
2885 BYTE_SIZE /* unit */ +
2886 BYTE_SIZE /* variance */ +
2887 LEB128_SIZE /* index */
2896 ENTER_LOG (&counter_descriptors_ctr, logbuffer, size);
2898 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
2899 emit_value (logbuffer, len);
2901 for (agent = counters; agent; agent = agent->next) {
2907 name = mono_counter_get_name (agent->counter);
2908 emit_value (logbuffer, mono_counter_get_section (agent->counter));
2909 emit_string (logbuffer, name, strlen (name) + 1);
2910 emit_byte (logbuffer, mono_counter_get_type (agent->counter));
2911 emit_byte (logbuffer, mono_counter_get_unit (agent->counter));
2912 emit_byte (logbuffer, mono_counter_get_variance (agent->counter));
2913 emit_value (logbuffer, agent->index);
2918 EXIT_LOG_EXPLICIT (DO_SEND);
2921 mono_os_mutex_unlock (&counters_mutex);
2925 counters_sample (MonoProfiler *profiler, uint64_t timestamp)
2927 MonoCounterAgent *agent;
2928 MonoCounter *counter;
2934 counters_emit (profiler);
2937 buffer = g_calloc (1, buffer_size);
2939 mono_os_mutex_lock (&counters_mutex);
2942 EVENT_SIZE /* event */
2945 for (agent = counters; agent; agent = agent->next) {
2947 LEB128_SIZE /* index */ +
2948 BYTE_SIZE /* type */ +
2949 mono_counter_get_size (agent->counter) /* value */
2954 LEB128_SIZE /* stop marker */
2957 ENTER_LOG (&counter_samples_ctr, logbuffer, size);
2959 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
2961 for (agent = counters; agent; agent = agent->next) {
2964 counter = agent->counter;
2966 size = mono_counter_get_size (counter);
2968 if (size > buffer_size) {
2970 buffer = g_realloc (buffer, buffer_size);
2973 memset (buffer, 0, buffer_size);
2975 g_assert (mono_counters_sample (counter, buffer, size));
2977 type = mono_counter_get_type (counter);
2979 if (!agent->value) {
2980 agent->value = g_calloc (1, size);
2981 agent->value_size = size;
2983 if (type == MONO_COUNTER_STRING) {
2984 if (strcmp (agent->value, buffer) == 0)
2987 if (agent->value_size == size && memcmp (agent->value, buffer, size) == 0)
2992 emit_uvalue (logbuffer, agent->index);
2993 emit_byte (logbuffer, type);
2995 case MONO_COUNTER_INT:
2996 #if SIZEOF_VOID_P == 4
2997 case MONO_COUNTER_WORD:
2999 emit_svalue (logbuffer, *(int*)buffer - *(int*)agent->value);
3001 case MONO_COUNTER_UINT:
3002 emit_uvalue (logbuffer, *(guint*)buffer - *(guint*)agent->value);
3004 case MONO_COUNTER_TIME_INTERVAL:
3005 case MONO_COUNTER_LONG:
3006 #if SIZEOF_VOID_P == 8
3007 case MONO_COUNTER_WORD:
3009 emit_svalue (logbuffer, *(gint64*)buffer - *(gint64*)agent->value);
3011 case MONO_COUNTER_ULONG:
3012 emit_uvalue (logbuffer, *(guint64*)buffer - *(guint64*)agent->value);
3014 case MONO_COUNTER_DOUBLE:
3015 emit_double (logbuffer, *(double*)buffer);
3017 case MONO_COUNTER_STRING:
3019 emit_byte (logbuffer, 0);
3021 emit_byte (logbuffer, 1);
3022 emit_string (logbuffer, (char*)buffer, size);
3026 g_assert_not_reached ();
3029 if (type == MONO_COUNTER_STRING && size > agent->value_size) {
3030 agent->value = g_realloc (agent->value, size);
3031 agent->value_size = size;
3035 memcpy (agent->value, buffer, size);
3039 emit_value (logbuffer, 0);
3041 EXIT_LOG_EXPLICIT (DO_SEND);
3043 mono_os_mutex_unlock (&counters_mutex);
3046 typedef struct _PerfCounterAgent PerfCounterAgent;
3047 struct _PerfCounterAgent {
3048 PerfCounterAgent *next;
3050 char *category_name;
3059 static PerfCounterAgent *perfcounters = NULL;
3062 perfcounters_emit (MonoProfiler *profiler)
3064 PerfCounterAgent *pcagent;
3067 EVENT_SIZE /* event */ +
3068 LEB128_SIZE /* len */
3071 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3072 if (pcagent->emitted)
3076 LEB128_SIZE /* section */ +
3077 strlen (pcagent->category_name) + 1 /* category name */ +
3078 strlen (pcagent->name) + 1 /* name */ +
3079 BYTE_SIZE /* type */ +
3080 BYTE_SIZE /* unit */ +
3081 BYTE_SIZE /* variance */ +
3082 LEB128_SIZE /* index */
3091 ENTER_LOG (&perfcounter_descriptors_ctr, logbuffer, size);
3093 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
3094 emit_value (logbuffer, len);
3096 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3097 if (pcagent->emitted)
3100 emit_value (logbuffer, MONO_COUNTER_PERFCOUNTERS);
3101 emit_string (logbuffer, pcagent->category_name, strlen (pcagent->category_name) + 1);
3102 emit_string (logbuffer, pcagent->name, strlen (pcagent->name) + 1);
3103 emit_byte (logbuffer, MONO_COUNTER_LONG);
3104 emit_byte (logbuffer, MONO_COUNTER_RAW);
3105 emit_byte (logbuffer, MONO_COUNTER_VARIABLE);
3106 emit_value (logbuffer, pcagent->index);
3108 pcagent->emitted = 1;
3111 EXIT_LOG_EXPLICIT (DO_SEND);
3115 perfcounters_foreach (char *category_name, char *name, unsigned char type, gint64 value, gpointer user_data)
3117 PerfCounterAgent *pcagent;
3119 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3120 if (strcmp (pcagent->category_name, category_name) != 0 || strcmp (pcagent->name, name) != 0)
3122 if (pcagent->value == value)
3125 pcagent->value = value;
3126 pcagent->updated = 1;
3127 pcagent->deleted = 0;
3131 pcagent = g_new0 (PerfCounterAgent, 1);
3132 pcagent->next = perfcounters;
3133 pcagent->index = counters_index++;
3134 pcagent->category_name = g_strdup (category_name);
3135 pcagent->name = g_strdup (name);
3136 pcagent->type = (int) type;
3137 pcagent->value = value;
3138 pcagent->emitted = 0;
3139 pcagent->updated = 1;
3140 pcagent->deleted = 0;
3142 perfcounters = pcagent;
3148 perfcounters_sample (MonoProfiler *profiler, uint64_t timestamp)
3150 PerfCounterAgent *pcagent;
3154 mono_os_mutex_lock (&counters_mutex);
3156 /* mark all perfcounters as deleted, foreach will unmark them as necessary */
3157 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next)
3158 pcagent->deleted = 1;
3160 mono_perfcounter_foreach (perfcounters_foreach, perfcounters);
3162 perfcounters_emit (profiler);
3165 EVENT_SIZE /* event */
3168 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3169 if (pcagent->deleted || !pcagent->updated)
3173 LEB128_SIZE /* index */ +
3174 BYTE_SIZE /* type */ +
3175 LEB128_SIZE /* value */
3185 LEB128_SIZE /* stop marker */
3188 ENTER_LOG (&perfcounter_samples_ctr, logbuffer, size);
3190 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
3192 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3193 if (pcagent->deleted || !pcagent->updated)
3195 emit_uvalue (logbuffer, pcagent->index);
3196 emit_byte (logbuffer, MONO_COUNTER_LONG);
3197 emit_svalue (logbuffer, pcagent->value);
3199 pcagent->updated = 0;
3202 emit_value (logbuffer, 0);
3204 EXIT_LOG_EXPLICIT (DO_SEND);
3207 mono_os_mutex_unlock (&counters_mutex);
3211 counters_and_perfcounters_sample (MonoProfiler *prof)
3213 uint64_t now = current_time ();
3215 counters_sample (prof, now);
3216 perfcounters_sample (prof, now);
3219 #define COVERAGE_DEBUG(x) if (debug_coverage) {x}
3220 static mono_mutex_t coverage_mutex;
3221 static MonoConcurrentHashTable *coverage_methods = NULL;
3222 static MonoConcurrentHashTable *coverage_assemblies = NULL;
3223 static MonoConcurrentHashTable *coverage_classes = NULL;
3225 static MonoConcurrentHashTable *filtered_classes = NULL;
3226 static MonoConcurrentHashTable *entered_methods = NULL;
3227 static MonoConcurrentHashTable *image_to_methods = NULL;
3228 static MonoConcurrentHashTable *suppressed_assemblies = NULL;
3229 static gboolean coverage_initialized = FALSE;
3231 static GPtrArray *coverage_data = NULL;
3232 static int previous_offset = 0;
3235 MonoLockFreeQueueNode node;
3248 free_coverage_entry (gpointer data, gpointer userdata)
3250 CoverageEntry *entry = (CoverageEntry *)data;
3251 g_free (entry->filename);
3256 obtain_coverage_for_method (MonoProfiler *prof, const MonoProfilerCoverageData *entry)
3258 int offset = entry->il_offset - previous_offset;
3259 CoverageEntry *e = g_new (CoverageEntry, 1);
3261 previous_offset = entry->il_offset;
3264 e->counter = entry->counter;
3265 e->filename = g_strdup(entry->file_name ? entry->file_name : "");
3266 e->line = entry->line;
3267 e->column = entry->column;
3269 g_ptr_array_add (coverage_data, e);
3273 parse_generic_type_names(char *name)
3275 char *new_name, *ret;
3276 int within_generic_declaration = 0, generic_members = 1;
3278 if (name == NULL || *name == '\0')
3279 return g_strdup ("");
3281 if (!(ret = new_name = (char *) g_calloc (strlen (name) * 4 + 1, sizeof (char))))
3287 within_generic_declaration = 1;
3291 within_generic_declaration = 0;
3293 if (*(name - 1) != '<') {
3295 *new_name++ = '0' + generic_members;
3297 memcpy (new_name, "<>", 8);
3301 generic_members = 0;
3309 if (!within_generic_declaration)
3310 *new_name++ = *name;
3319 static int method_id;
3321 build_method_buffer (gpointer key, gpointer value, gpointer userdata)
3323 MonoMethod *method = (MonoMethod *)value;
3324 MonoProfiler *prof = (MonoProfiler *)userdata;
3328 const char *image_name, *method_name, *sig, *first_filename;
3331 previous_offset = 0;
3332 coverage_data = g_ptr_array_new ();
3334 mono_profiler_get_coverage_data (prof->handle, method, obtain_coverage_for_method);
3336 klass = mono_method_get_class (method);
3337 image = mono_class_get_image (klass);
3338 image_name = mono_image_get_name (image);
3340 sig = mono_signature_get_desc (mono_method_signature (method), TRUE);
3341 class_name = parse_generic_type_names (mono_type_get_name (mono_class_get_type (klass)));
3342 method_name = mono_method_get_name (method);
3344 if (coverage_data->len != 0) {
3345 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[0];
3346 first_filename = entry->filename ? entry->filename : "";
3348 first_filename = "";
3350 image_name = image_name ? image_name : "";
3351 sig = sig ? sig : "";
3352 method_name = method_name ? method_name : "";
3354 ENTER_LOG (&coverage_methods_ctr, logbuffer,
3355 EVENT_SIZE /* event */ +
3356 strlen (image_name) + 1 /* image name */ +
3357 strlen (class_name) + 1 /* class name */ +
3358 strlen (method_name) + 1 /* method name */ +
3359 strlen (sig) + 1 /* signature */ +
3360 strlen (first_filename) + 1 /* first file name */ +
3361 LEB128_SIZE /* token */ +
3362 LEB128_SIZE /* method id */ +
3363 LEB128_SIZE /* entries */
3366 emit_event (logbuffer, TYPE_COVERAGE_METHOD | TYPE_COVERAGE);
3367 emit_string (logbuffer, image_name, strlen (image_name) + 1);
3368 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3369 emit_string (logbuffer, method_name, strlen (method_name) + 1);
3370 emit_string (logbuffer, sig, strlen (sig) + 1);
3371 emit_string (logbuffer, first_filename, strlen (first_filename) + 1);
3373 emit_uvalue (logbuffer, mono_method_get_token (method));
3374 emit_uvalue (logbuffer, method_id);
3375 emit_value (logbuffer, coverage_data->len);
3377 EXIT_LOG_EXPLICIT (DO_SEND);
3379 for (i = 0; i < coverage_data->len; i++) {
3380 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[i];
3382 ENTER_LOG (&coverage_statements_ctr, logbuffer,
3383 EVENT_SIZE /* event */ +
3384 LEB128_SIZE /* method id */ +
3385 LEB128_SIZE /* offset */ +
3386 LEB128_SIZE /* counter */ +
3387 LEB128_SIZE /* line */ +
3388 LEB128_SIZE /* column */
3391 emit_event (logbuffer, TYPE_COVERAGE_STATEMENT | TYPE_COVERAGE);
3392 emit_uvalue (logbuffer, method_id);
3393 emit_uvalue (logbuffer, entry->offset);
3394 emit_uvalue (logbuffer, entry->counter);
3395 emit_uvalue (logbuffer, entry->line);
3396 emit_uvalue (logbuffer, entry->column);
3398 EXIT_LOG_EXPLICIT (DO_SEND);
3403 g_free (class_name);
3405 g_ptr_array_foreach (coverage_data, free_coverage_entry, NULL);
3406 g_ptr_array_free (coverage_data, TRUE);
3407 coverage_data = NULL;
3410 /* This empties the queue */
3412 count_queue (MonoLockFreeQueue *queue)
3414 MonoLockFreeQueueNode *node;
3417 while ((node = mono_lock_free_queue_dequeue (queue))) {
3419 mono_thread_hazardous_try_free (node, g_free);
3426 build_class_buffer (gpointer key, gpointer value, gpointer userdata)
3428 MonoClass *klass = (MonoClass *)key;
3429 MonoLockFreeQueue *class_methods = (MonoLockFreeQueue *)value;
3432 const char *assembly_name;
3433 int number_of_methods, partially_covered;
3434 guint fully_covered;
3436 image = mono_class_get_image (klass);
3437 assembly_name = mono_image_get_name (image);
3438 class_name = mono_type_get_name (mono_class_get_type (klass));
3440 assembly_name = assembly_name ? assembly_name : "";
3441 number_of_methods = mono_class_num_methods (klass);
3442 fully_covered = count_queue (class_methods);
3443 /* We don't handle partial covered yet */
3444 partially_covered = 0;
3446 ENTER_LOG (&coverage_classes_ctr, logbuffer,
3447 EVENT_SIZE /* event */ +
3448 strlen (assembly_name) + 1 /* assembly name */ +
3449 strlen (class_name) + 1 /* class name */ +
3450 LEB128_SIZE /* no. methods */ +
3451 LEB128_SIZE /* fully covered */ +
3452 LEB128_SIZE /* partially covered */
3455 emit_event (logbuffer, TYPE_COVERAGE_CLASS | TYPE_COVERAGE);
3456 emit_string (logbuffer, assembly_name, strlen (assembly_name) + 1);
3457 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3458 emit_uvalue (logbuffer, number_of_methods);
3459 emit_uvalue (logbuffer, fully_covered);
3460 emit_uvalue (logbuffer, partially_covered);
3462 EXIT_LOG_EXPLICIT (DO_SEND);
3464 g_free (class_name);
3468 get_coverage_for_image (MonoImage *image, int *number_of_methods, guint *fully_covered, int *partially_covered)
3470 MonoLockFreeQueue *image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3472 *number_of_methods = mono_image_get_table_rows (image, MONO_TABLE_METHOD);
3474 *fully_covered = count_queue (image_methods);
3478 // FIXME: We don't handle partially covered yet.
3479 *partially_covered = 0;
3483 build_assembly_buffer (gpointer key, gpointer value, gpointer userdata)
3485 MonoAssembly *assembly = (MonoAssembly *)value;
3486 MonoImage *image = mono_assembly_get_image (assembly);
3487 const char *name, *guid, *filename;
3488 int number_of_methods = 0, partially_covered = 0;
3489 guint fully_covered = 0;
3491 name = mono_image_get_name (image);
3492 guid = mono_image_get_guid (image);
3493 filename = mono_image_get_filename (image);
3495 name = name ? name : "";
3496 guid = guid ? guid : "";
3497 filename = filename ? filename : "";
3499 get_coverage_for_image (image, &number_of_methods, &fully_covered, &partially_covered);
3501 ENTER_LOG (&coverage_assemblies_ctr, logbuffer,
3502 EVENT_SIZE /* event */ +
3503 strlen (name) + 1 /* name */ +
3504 strlen (guid) + 1 /* guid */ +
3505 strlen (filename) + 1 /* file name */ +
3506 LEB128_SIZE /* no. methods */ +
3507 LEB128_SIZE /* fully covered */ +
3508 LEB128_SIZE /* partially covered */
3511 emit_event (logbuffer, TYPE_COVERAGE_ASSEMBLY | TYPE_COVERAGE);
3512 emit_string (logbuffer, name, strlen (name) + 1);
3513 emit_string (logbuffer, guid, strlen (guid) + 1);
3514 emit_string (logbuffer, filename, strlen (filename) + 1);
3515 emit_uvalue (logbuffer, number_of_methods);
3516 emit_uvalue (logbuffer, fully_covered);
3517 emit_uvalue (logbuffer, partially_covered);
3519 EXIT_LOG_EXPLICIT (DO_SEND);
3523 dump_coverage (MonoProfiler *prof)
3525 if (!coverage_initialized)
3528 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Started dump\n");)
3531 mono_os_mutex_lock (&coverage_mutex);
3532 mono_conc_hashtable_foreach (coverage_assemblies, build_assembly_buffer, NULL);
3533 mono_conc_hashtable_foreach (coverage_classes, build_class_buffer, NULL);
3534 mono_conc_hashtable_foreach (coverage_methods, build_method_buffer, prof);
3535 mono_os_mutex_unlock (&coverage_mutex);
3537 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Finished dump\n");)
3541 process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method)
3546 if (!coverage_initialized)
3549 klass = mono_method_get_class (method);
3550 image = mono_class_get_image (klass);
3552 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)))
3555 mono_os_mutex_lock (&coverage_mutex);
3556 mono_conc_hashtable_insert (entered_methods, method, method);
3557 mono_os_mutex_unlock (&coverage_mutex);
3560 static MonoLockFreeQueueNode *
3561 create_method_node (MonoMethod *method)
3563 MethodNode *node = (MethodNode *) g_malloc (sizeof (MethodNode));
3564 mono_lock_free_queue_node_init ((MonoLockFreeQueueNode *) node, FALSE);
3565 node->method = method;
3567 return (MonoLockFreeQueueNode *) node;
3571 coverage_filter (MonoProfiler *prof, MonoMethod *method)
3576 MonoAssembly *assembly;
3577 MonoMethodHeader *header;
3578 guint32 iflags, flags, code_size;
3579 char *fqn, *classname;
3580 gboolean has_positive, found;
3581 MonoLockFreeQueue *image_methods, *class_methods;
3582 MonoLockFreeQueueNode *node;
3584 g_assert (coverage_initialized && "Why are we being asked for coverage filter info when we're not doing coverage?");
3586 COVERAGE_DEBUG(fprintf (stderr, "Coverage filter for %s\n", mono_method_get_name (method));)
3588 flags = mono_method_get_flags (method, &iflags);
3589 if ((iflags & 0x1000 /*METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL*/) ||
3590 (flags & 0x2000 /*METHOD_ATTRIBUTE_PINVOKE_IMPL*/)) {
3591 COVERAGE_DEBUG(fprintf (stderr, " Internal call or pinvoke - ignoring\n");)
3595 // Don't need to do anything else if we're already tracking this method
3596 if (mono_conc_hashtable_lookup (coverage_methods, method)) {
3597 COVERAGE_DEBUG(fprintf (stderr, " Already tracking\n");)
3601 klass = mono_method_get_class (method);
3602 image = mono_class_get_image (klass);
3604 // Don't handle coverage for the core assemblies
3605 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)) != NULL)
3608 if (prof->coverage_filters) {
3609 /* Check already filtered classes first */
3610 if (mono_conc_hashtable_lookup (filtered_classes, klass)) {
3611 COVERAGE_DEBUG(fprintf (stderr, " Already filtered\n");)
3615 classname = mono_type_get_name (mono_class_get_type (klass));
3617 fqn = g_strdup_printf ("[%s]%s", mono_image_get_name (image), classname);
3619 COVERAGE_DEBUG(fprintf (stderr, " Looking for %s in filter\n", fqn);)
3620 // Check positive filters first
3621 has_positive = FALSE;
3623 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3624 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3626 if (filter [0] == '+') {
3627 filter = &filter [1];
3629 COVERAGE_DEBUG(fprintf (stderr, " Checking against +%s ...", filter);)
3631 if (strstr (fqn, filter) != NULL) {
3632 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3635 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3637 has_positive = TRUE;
3641 if (has_positive && !found) {
3642 COVERAGE_DEBUG(fprintf (stderr, " Positive match was not found\n");)
3644 mono_os_mutex_lock (&coverage_mutex);
3645 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3646 mono_os_mutex_unlock (&coverage_mutex);
3653 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3654 // FIXME: Is substring search sufficient?
3655 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3656 if (filter [0] == '+')
3660 filter = &filter [1];
3661 COVERAGE_DEBUG(fprintf (stderr, " Checking against -%s ...", filter);)
3663 if (strstr (fqn, filter) != NULL) {
3664 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3666 mono_os_mutex_lock (&coverage_mutex);
3667 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3668 mono_os_mutex_unlock (&coverage_mutex);
3674 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3682 COVERAGE_DEBUG(fprintf (stderr, " Handling coverage for %s\n", mono_method_get_name (method));)
3683 header = mono_method_get_header_checked (method, &error);
3684 mono_error_cleanup (&error);
3686 mono_method_header_get_code (header, &code_size, NULL);
3688 assembly = mono_image_get_assembly (image);
3690 // Need to keep the assemblies around for as long as they are kept in the hashtable
3691 // Nunit, for example, has a habit of unloading them before the coverage statistics are
3692 // generated causing a crash. See https://bugzilla.xamarin.com/show_bug.cgi?id=39325
3693 mono_assembly_addref (assembly);
3695 mono_os_mutex_lock (&coverage_mutex);
3696 mono_conc_hashtable_insert (coverage_methods, method, method);
3697 mono_conc_hashtable_insert (coverage_assemblies, assembly, assembly);
3698 mono_os_mutex_unlock (&coverage_mutex);
3700 image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3702 if (image_methods == NULL) {
3703 image_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3704 mono_lock_free_queue_init (image_methods);
3705 mono_os_mutex_lock (&coverage_mutex);
3706 mono_conc_hashtable_insert (image_to_methods, image, image_methods);
3707 mono_os_mutex_unlock (&coverage_mutex);
3710 node = create_method_node (method);
3711 mono_lock_free_queue_enqueue (image_methods, node);
3713 class_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (coverage_classes, klass);
3715 if (class_methods == NULL) {
3716 class_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3717 mono_lock_free_queue_init (class_methods);
3718 mono_os_mutex_lock (&coverage_mutex);
3719 mono_conc_hashtable_insert (coverage_classes, klass, class_methods);
3720 mono_os_mutex_unlock (&coverage_mutex);
3723 node = create_method_node (method);
3724 mono_lock_free_queue_enqueue (class_methods, node);
3729 #define LINE_BUFFER_SIZE 4096
3730 /* Max file limit of 128KB */
3731 #define MAX_FILE_SIZE 128 * 1024
3733 get_file_content (FILE *stream)
3738 int res, offset = 0;
3740 res = fseek (stream, 0, SEEK_END);
3744 filesize = ftell (stream);
3748 res = fseek (stream, 0, SEEK_SET);
3752 if (filesize > MAX_FILE_SIZE)
3755 buffer = (char *) g_malloc ((filesize + 1) * sizeof (char));
3756 while ((bytes_read = fread (buffer + offset, 1, LINE_BUFFER_SIZE, stream)) > 0)
3757 offset += bytes_read;
3759 /* NULL terminate our buffer */
3760 buffer[filesize] = '\0';
3765 get_next_line (char *contents, char **next_start)
3769 if (p == NULL || *p == '\0') {
3774 while (*p != '\n' && *p != '\0')
3779 *next_start = p + 1;
3787 init_suppressed_assemblies (void)
3793 suppressed_assemblies = mono_conc_hashtable_new (g_str_hash, g_str_equal);
3794 sa_file = fopen (SUPPRESSION_DIR "/mono-profiler-log.suppression", "r");
3795 if (sa_file == NULL)
3798 /* Don't need to free @content as it is referred to by the lines stored in @suppressed_assemblies */
3799 content = get_file_content (sa_file);
3800 if (content == NULL) {
3801 g_error ("mono-profiler-log.suppression is greater than 128kb - aborting\n");
3804 while ((line = get_next_line (content, &content))) {
3805 line = g_strchomp (g_strchug (line));
3806 /* No locking needed as we're doing initialization */
3807 mono_conc_hashtable_insert (suppressed_assemblies, line, line);
3814 parse_cov_filter_file (GPtrArray *filters, const char *file)
3817 char *line, *content;
3819 filter_file = fopen (file, "r");
3820 if (filter_file == NULL) {
3821 fprintf (stderr, "Unable to open %s\n", file);
3825 /* Don't need to free content as it is referred to by the lines stored in @filters */
3826 content = get_file_content (filter_file);
3827 if (content == NULL)
3828 fprintf (stderr, "WARNING: %s is greater than 128kb - ignoring\n", file);
3830 while ((line = get_next_line (content, &content)))
3831 g_ptr_array_add (filters, g_strchug (g_strchomp (line)));
3833 fclose (filter_file);
3837 coverage_init (MonoProfiler *prof)
3839 g_assert (!coverage_initialized && "Why are we initializing coverage twice?");
3841 COVERAGE_DEBUG(fprintf (stderr, "Coverage initialized\n");)
3843 mono_os_mutex_init (&coverage_mutex);
3844 coverage_methods = mono_conc_hashtable_new (NULL, NULL);
3845 coverage_assemblies = mono_conc_hashtable_new (NULL, NULL);
3846 coverage_classes = mono_conc_hashtable_new (NULL, NULL);
3847 filtered_classes = mono_conc_hashtable_new (NULL, NULL);
3848 entered_methods = mono_conc_hashtable_new (NULL, NULL);
3849 image_to_methods = mono_conc_hashtable_new (NULL, NULL);
3850 init_suppressed_assemblies ();
3852 coverage_initialized = TRUE;
3856 unref_coverage_assemblies (gpointer key, gpointer value, gpointer userdata)
3858 MonoAssembly *assembly = (MonoAssembly *)value;
3859 mono_assembly_close (assembly);
3863 free_sample_hit (gpointer p)
3865 mono_lock_free_free (p, SAMPLE_BLOCK_SIZE);
3869 cleanup_reusable_samples (MonoProfiler *prof)
3873 while ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->sample_reuse_queue)))
3874 mono_thread_hazardous_try_free (sample, free_sample_hit);
3878 log_shutdown (MonoProfiler *prof)
3880 InterlockedWrite (&in_shutdown, 1);
3883 counters_and_perfcounters_sample (prof);
3885 dump_coverage (prof);
3889 if (write (prof->pipes [1], &c, 1) != 1) {
3890 fprintf (stderr, "Could not write to pipe: %s\n", strerror (errno));
3894 mono_native_thread_join (prof->helper_thread);
3896 mono_os_mutex_destroy (&counters_mutex);
3898 MonoCounterAgent *mc_next;
3900 for (MonoCounterAgent *cur = counters; cur; cur = mc_next) {
3901 mc_next = cur->next;
3905 PerfCounterAgent *pc_next;
3907 for (PerfCounterAgent *cur = perfcounters; cur; cur = pc_next) {
3908 pc_next = cur->next;
3913 * Ensure that we empty the LLS completely, even if some nodes are
3914 * not immediately removed upon calling mono_lls_remove (), by
3915 * iterating until the head is NULL.
3917 while (profiler_thread_list.head) {
3918 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
3919 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
3921 remove_thread (thread);
3922 } MONO_LLS_FOREACH_SAFE_END
3926 * Ensure that all threads have been freed, so that we don't miss any
3927 * buffers when we shut down the writer thread below.
3929 mono_thread_hazardous_try_free_all ();
3931 InterlockedWrite (&prof->run_dumper_thread, 0);
3932 mono_os_sem_post (&prof->dumper_queue_sem);
3933 mono_native_thread_join (prof->dumper_thread);
3934 mono_os_sem_destroy (&prof->dumper_queue_sem);
3936 InterlockedWrite (&prof->run_writer_thread, 0);
3937 mono_os_sem_post (&prof->writer_queue_sem);
3938 mono_native_thread_join (prof->writer_thread);
3939 mono_os_sem_destroy (&prof->writer_queue_sem);
3942 * Free all writer queue entries, and ensure that all sample hits will be
3943 * added to the sample reuse queue.
3945 mono_thread_hazardous_try_free_all ();
3947 cleanup_reusable_samples (prof);
3950 * Finally, make sure that all sample hits are freed. This should cover all
3951 * hazardous data from the profiler. We can now be sure that the runtime
3952 * won't later invoke free functions in the profiler library after it has
3955 mono_thread_hazardous_try_free_all ();
3957 gint32 state = InterlockedRead (&buffer_lock_state);
3959 g_assert (!(state & 0xFFFF) && "Why is the reader count still non-zero?");
3960 g_assert (!(state >> 16) && "Why is the exclusive lock still held?");
3962 #if defined (HAVE_SYS_ZLIB)
3964 gzclose (prof->gzfile);
3966 if (prof->pipe_output)
3967 pclose (prof->file);
3969 fclose (prof->file);
3971 mono_conc_hashtable_destroy (prof->method_table);
3972 mono_os_mutex_destroy (&prof->method_table_mutex);
3974 if (coverage_initialized) {
3975 mono_os_mutex_lock (&coverage_mutex);
3976 mono_conc_hashtable_foreach (coverage_assemblies, unref_coverage_assemblies, prof);
3977 mono_os_mutex_unlock (&coverage_mutex);
3979 mono_conc_hashtable_destroy (coverage_methods);
3980 mono_conc_hashtable_destroy (coverage_assemblies);
3981 mono_conc_hashtable_destroy (coverage_classes);
3982 mono_conc_hashtable_destroy (filtered_classes);
3984 mono_conc_hashtable_destroy (entered_methods);
3985 mono_conc_hashtable_destroy (image_to_methods);
3986 mono_conc_hashtable_destroy (suppressed_assemblies);
3987 mono_os_mutex_destroy (&coverage_mutex);
3992 g_free (prof->args);
3997 new_filename (const char* filename)
3999 time_t t = time (NULL);
4000 int pid = process_id ();
4005 int count_dates = 0;
4009 for (p = filename; *p; p++) {
4020 if (!count_dates && !count_pids)
4021 return pstrdup (filename);
4022 snprintf (pid_buf, sizeof (pid_buf), "%d", pid);
4024 snprintf (time_buf, sizeof (time_buf), "%d%02d%02d%02d%02d%02d",
4025 1900 + ts->tm_year, 1 + ts->tm_mon, ts->tm_mday, ts->tm_hour, ts->tm_min, ts->tm_sec);
4026 s_date = strlen (time_buf);
4027 s_pid = strlen (pid_buf);
4028 d = res = (char *) g_malloc (strlen (filename) + s_date * count_dates + s_pid * count_pids);
4029 for (p = filename; *p; p++) {
4036 strcpy (d, time_buf);
4039 } else if (*p == 'p') {
4040 strcpy (d, pid_buf);
4043 } else if (*p == '%') {
4056 add_to_fd_set (fd_set *set, int fd, int *max_fd)
4059 * This should only trigger for the basic FDs (server socket, pipes) at
4060 * startup if for some mysterious reason they're too large. In this case,
4061 * the profiler really can't function, and we're better off printing an
4062 * error and exiting.
4064 if (fd >= FD_SETSIZE) {
4065 fprintf (stderr, "File descriptor is out of bounds for fd_set: %d\n", fd);
4076 helper_thread (void *arg)
4078 MonoProfiler *prof = (MonoProfiler *) arg;
4080 mono_threads_attach_tools_thread ();
4081 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler helper");
4083 MonoProfilerThread *thread = init_thread (prof, FALSE);
4085 GArray *command_sockets = g_array_new (FALSE, FALSE, sizeof (int));
4093 add_to_fd_set (&rfds, prof->server_socket, &max_fd);
4094 add_to_fd_set (&rfds, prof->pipes [0], &max_fd);
4096 for (gint i = 0; i < command_sockets->len; i++)
4097 add_to_fd_set (&rfds, g_array_index (command_sockets, int, i), &max_fd);
4099 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
4101 // Sleep for 1sec or until a file descriptor has data.
4102 if (select (max_fd + 1, &rfds, NULL, NULL, &tv) == -1) {
4106 fprintf (stderr, "Error in mono-profiler-log server: %s", strerror (errno));
4111 counters_and_perfcounters_sample (prof);
4113 buffer_lock_excl ();
4115 sync_point (SYNC_POINT_PERIODIC);
4117 buffer_unlock_excl ();
4119 // Are we shutting down?
4120 if (FD_ISSET (prof->pipes [0], &rfds)) {
4122 read (prof->pipes [0], &c, 1);
4126 for (gint i = 0; i < command_sockets->len; i++) {
4127 int fd = g_array_index (command_sockets, int, i);
4129 if (!FD_ISSET (fd, &rfds))
4133 int len = read (fd, buf, sizeof (buf) - 1);
4139 // The other end disconnected.
4140 g_array_remove_index (command_sockets, i);
4148 if (!strcmp (buf, "heapshot\n") && hs_mode_ondemand) {
4149 // Rely on the finalization callback triggering a GC.
4150 heapshot_requested = 1;
4151 mono_gc_finalize_notify ();
4155 if (FD_ISSET (prof->server_socket, &rfds)) {
4156 int fd = accept (prof->server_socket, NULL, NULL);
4159 if (fd >= FD_SETSIZE)
4162 g_array_append_val (command_sockets, fd);
4167 for (gint i = 0; i < command_sockets->len; i++)
4168 close (g_array_index (command_sockets, int, i));
4170 g_array_free (command_sockets, TRUE);
4172 send_log_unsafe (FALSE);
4173 deinit_thread (thread);
4175 mono_thread_info_detach ();
4181 start_helper_thread (MonoProfiler* prof)
4183 if (pipe (prof->pipes) == -1) {
4184 fprintf (stderr, "Cannot create pipe: %s\n", strerror (errno));
4188 prof->server_socket = socket (PF_INET, SOCK_STREAM, 0);
4190 if (prof->server_socket == -1) {
4191 fprintf (stderr, "Cannot create server socket: %s\n", strerror (errno));
4195 struct sockaddr_in server_address;
4197 memset (&server_address, 0, sizeof (server_address));
4198 server_address.sin_family = AF_INET;
4199 server_address.sin_addr.s_addr = INADDR_ANY;
4200 server_address.sin_port = htons (prof->command_port);
4202 if (bind (prof->server_socket, (struct sockaddr *) &server_address, sizeof (server_address)) == -1) {
4203 fprintf (stderr, "Cannot bind server socket on port %d: %s\n", prof->command_port, strerror (errno));
4204 close (prof->server_socket);
4208 if (listen (prof->server_socket, 1) == -1) {
4209 fprintf (stderr, "Cannot listen on server socket: %s\n", strerror (errno));
4210 close (prof->server_socket);
4214 socklen_t slen = sizeof (server_address);
4216 if (getsockname (prof->server_socket, (struct sockaddr *) &server_address, &slen)) {
4217 fprintf (stderr, "Could not get assigned port: %s\n", strerror (errno));
4218 close (prof->server_socket);
4222 prof->command_port = ntohs (server_address.sin_port);
4224 if (!mono_native_thread_create (&prof->helper_thread, helper_thread, prof)) {
4225 fprintf (stderr, "Could not start helper thread\n");
4226 close (prof->server_socket);
4232 free_writer_entry (gpointer p)
4234 mono_lock_free_free (p, WRITER_ENTRY_BLOCK_SIZE);
4238 handle_writer_queue_entry (MonoProfiler *prof)
4240 WriterQueueEntry *entry;
4242 if ((entry = (WriterQueueEntry *) mono_lock_free_queue_dequeue (&prof->writer_queue))) {
4243 if (!entry->methods)
4246 gboolean wrote_methods = FALSE;
4249 * Encode the method events in a temporary log buffer that we
4250 * flush to disk before the main buffer, ensuring that all
4251 * methods have metadata emitted before they're referenced.
4253 * We use a 'proper' thread-local buffer for this as opposed
4254 * to allocating and freeing a buffer by hand because the call
4255 * to mono_method_full_name () below may trigger class load
4256 * events when it retrieves the signature of the method. So a
4257 * thread-local buffer needs to exist when such events occur.
4259 for (guint i = 0; i < entry->methods->len; i++) {
4260 MethodInfo *info = (MethodInfo *) g_ptr_array_index (entry->methods, i);
4262 if (mono_conc_hashtable_lookup (prof->method_table, info->method))
4263 goto free_info; // This method already has metadata emitted.
4266 * Other threads use this hash table to get a general
4267 * idea of whether a method has already been emitted to
4268 * the stream. Due to the way we add to this table, it
4269 * can easily happen that multiple threads queue up the
4270 * same methods, but that's OK since eventually all
4271 * methods will be in this table and the thread-local
4272 * method lists will just be empty for the rest of the
4275 mono_os_mutex_lock (&prof->method_table_mutex);
4276 mono_conc_hashtable_insert (prof->method_table, info->method, info->method);
4277 mono_os_mutex_unlock (&prof->method_table_mutex);
4279 char *name = mono_method_full_name (info->method, 1);
4280 int nlen = strlen (name) + 1;
4281 void *cstart = info->ji ? mono_jit_info_get_code_start (info->ji) : NULL;
4282 int csize = info->ji ? mono_jit_info_get_code_size (info->ji) : 0;
4284 ENTER_LOG (&method_jits_ctr, logbuffer,
4285 EVENT_SIZE /* event */ +
4286 LEB128_SIZE /* method */ +
4287 LEB128_SIZE /* start */ +
4288 LEB128_SIZE /* size */ +
4292 emit_event_time (logbuffer, TYPE_JIT | TYPE_METHOD, info->time);
4293 emit_method_inner (logbuffer, info->method);
4294 emit_ptr (logbuffer, cstart);
4295 emit_value (logbuffer, csize);
4297 memcpy (logbuffer->cursor, name, nlen);
4298 logbuffer->cursor += nlen;
4300 EXIT_LOG_EXPLICIT (NO_SEND);
4304 wrote_methods = TRUE;
4310 g_ptr_array_free (entry->methods, TRUE);
4312 if (wrote_methods) {
4313 MonoProfilerThread *thread = PROF_TLS_GET ();
4315 dump_buffer_threadless (prof, thread->buffer);
4316 init_buffer_state (thread);
4320 dump_buffer (prof, entry->buffer);
4322 mono_thread_hazardous_try_free (entry, free_writer_entry);
4331 writer_thread (void *arg)
4333 MonoProfiler *prof = (MonoProfiler *)arg;
4335 mono_threads_attach_tools_thread ();
4336 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler writer");
4340 MonoProfilerThread *thread = init_thread (prof, FALSE);
4342 while (InterlockedRead (&prof->run_writer_thread)) {
4343 mono_os_sem_wait (&prof->writer_queue_sem, MONO_SEM_FLAGS_NONE);
4344 handle_writer_queue_entry (prof);
4347 /* Drain any remaining entries on shutdown. */
4348 while (handle_writer_queue_entry (prof));
4350 free_buffer (thread->buffer, thread->buffer->size);
4351 deinit_thread (thread);
4353 mono_thread_info_detach ();
4359 start_writer_thread (MonoProfiler* prof)
4361 InterlockedWrite (&prof->run_writer_thread, 1);
4363 if (!mono_native_thread_create (&prof->writer_thread, writer_thread, prof)) {
4364 fprintf (stderr, "Could not start writer thread\n");
4370 reuse_sample_hit (gpointer p)
4372 SampleHit *sample = p;
4374 mono_lock_free_queue_node_unpoison (&sample->node);
4375 mono_lock_free_queue_enqueue (&sample->prof->sample_reuse_queue, &sample->node);
4379 handle_dumper_queue_entry (MonoProfiler *prof)
4383 if ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->dumper_queue))) {
4384 for (int i = 0; i < sample->count; ++i) {
4385 MonoMethod *method = sample->frames [i].method;
4386 MonoDomain *domain = sample->frames [i].domain;
4387 void *address = sample->frames [i].base_address;
4390 g_assert (domain && "What happened to the domain pointer?");
4391 g_assert (address && "What happened to the instruction pointer?");
4393 MonoJitInfo *ji = mono_jit_info_table_find (domain, (char *) address);
4396 sample->frames [i].method = mono_jit_info_get_method (ji);
4400 ENTER_LOG (&sample_hits_ctr, logbuffer,
4401 EVENT_SIZE /* event */ +
4402 BYTE_SIZE /* type */ +
4403 LEB128_SIZE /* tid */ +
4404 LEB128_SIZE /* count */ +
4406 LEB128_SIZE /* ip */
4408 LEB128_SIZE /* managed count */ +
4410 LEB128_SIZE /* method */
4414 emit_event_time (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_HIT, sample->time);
4415 emit_byte (logbuffer, SAMPLE_CYCLES);
4416 emit_ptr (logbuffer, (void *) sample->tid);
4417 emit_value (logbuffer, 1);
4419 // TODO: Actual native unwinding.
4420 for (int i = 0; i < 1; ++i) {
4421 emit_ptr (logbuffer, sample->ip);
4422 add_code_pointer ((uintptr_t) sample->ip);
4425 /* new in data version 6 */
4426 emit_uvalue (logbuffer, sample->count);
4428 for (int i = 0; i < sample->count; ++i)
4429 emit_method (logbuffer, sample->frames [i].method);
4431 EXIT_LOG_EXPLICIT (DO_SEND);
4433 mono_thread_hazardous_try_free (sample, reuse_sample_hit);
4435 dump_unmanaged_coderefs (prof);
4442 dumper_thread (void *arg)
4444 MonoProfiler *prof = (MonoProfiler *)arg;
4446 mono_threads_attach_tools_thread ();
4447 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler dumper");
4449 MonoProfilerThread *thread = init_thread (prof, FALSE);
4451 while (InterlockedRead (&prof->run_dumper_thread)) {
4453 * Flush samples every second so it doesn't seem like the profiler is
4454 * not working if the program is mostly idle.
4456 if (mono_os_sem_timedwait (&prof->dumper_queue_sem, 1000, MONO_SEM_FLAGS_NONE) == MONO_SEM_TIMEDWAIT_RET_TIMEDOUT)
4457 send_log_unsafe (FALSE);
4459 handle_dumper_queue_entry (prof);
4462 /* Drain any remaining entries on shutdown. */
4463 while (handle_dumper_queue_entry (prof));
4465 send_log_unsafe (FALSE);
4466 deinit_thread (thread);
4468 mono_thread_info_detach ();
4474 start_dumper_thread (MonoProfiler* prof)
4476 InterlockedWrite (&prof->run_dumper_thread, 1);
4478 if (!mono_native_thread_create (&prof->dumper_thread, dumper_thread, prof)) {
4479 fprintf (stderr, "Could not start dumper thread\n");
4485 register_counter (const char *name, gint32 *counter)
4487 mono_counters_register (name, MONO_COUNTER_UINT | MONO_COUNTER_PROFILER | MONO_COUNTER_MONOTONIC, counter);
4491 runtime_initialized (MonoProfiler *profiler)
4493 InterlockedWrite (&runtime_inited, 1);
4495 register_counter ("Sample events allocated", &sample_allocations_ctr);
4496 register_counter ("Log buffers allocated", &buffer_allocations_ctr);
4498 register_counter ("Event: Sync points", &sync_points_ctr);
4499 register_counter ("Event: Heap objects", &heap_objects_ctr);
4500 register_counter ("Event: Heap starts", &heap_starts_ctr);
4501 register_counter ("Event: Heap ends", &heap_ends_ctr);
4502 register_counter ("Event: Heap roots", &heap_roots_ctr);
4503 register_counter ("Event: GC events", &gc_events_ctr);
4504 register_counter ("Event: GC resizes", &gc_resizes_ctr);
4505 register_counter ("Event: GC allocations", &gc_allocs_ctr);
4506 register_counter ("Event: GC moves", &gc_moves_ctr);
4507 register_counter ("Event: GC handle creations", &gc_handle_creations_ctr);
4508 register_counter ("Event: GC handle deletions", &gc_handle_deletions_ctr);
4509 register_counter ("Event: GC finalize starts", &finalize_begins_ctr);
4510 register_counter ("Event: GC finalize ends", &finalize_ends_ctr);
4511 register_counter ("Event: GC finalize object starts", &finalize_object_begins_ctr);
4512 register_counter ("Event: GC finalize object ends", &finalize_object_ends_ctr);
4513 register_counter ("Event: Image loads", &image_loads_ctr);
4514 register_counter ("Event: Image unloads", &image_unloads_ctr);
4515 register_counter ("Event: Assembly loads", &assembly_loads_ctr);
4516 register_counter ("Event: Assembly unloads", &assembly_unloads_ctr);
4517 register_counter ("Event: Class loads", &class_loads_ctr);
4518 register_counter ("Event: Class unloads", &class_unloads_ctr);
4519 register_counter ("Event: Method entries", &method_entries_ctr);
4520 register_counter ("Event: Method exits", &method_exits_ctr);
4521 register_counter ("Event: Method exception leaves", &method_exception_exits_ctr);
4522 register_counter ("Event: Method JITs", &method_jits_ctr);
4523 register_counter ("Event: Code buffers", &code_buffers_ctr);
4524 register_counter ("Event: Exception throws", &exception_throws_ctr);
4525 register_counter ("Event: Exception clauses", &exception_clauses_ctr);
4526 register_counter ("Event: Monitor events", &monitor_events_ctr);
4527 register_counter ("Event: Thread starts", &thread_starts_ctr);
4528 register_counter ("Event: Thread ends", &thread_ends_ctr);
4529 register_counter ("Event: Thread names", &thread_names_ctr);
4530 register_counter ("Event: Domain loads", &domain_loads_ctr);
4531 register_counter ("Event: Domain unloads", &domain_unloads_ctr);
4532 register_counter ("Event: Domain names", &domain_names_ctr);
4533 register_counter ("Event: Context loads", &context_loads_ctr);
4534 register_counter ("Event: Context unloads", &context_unloads_ctr);
4535 register_counter ("Event: Sample binaries", &sample_ubins_ctr);
4536 register_counter ("Event: Sample symbols", &sample_usyms_ctr);
4537 register_counter ("Event: Sample hits", &sample_hits_ctr);
4538 register_counter ("Event: Counter descriptors", &counter_descriptors_ctr);
4539 register_counter ("Event: Counter samples", &counter_samples_ctr);
4540 register_counter ("Event: Performance counter descriptors", &perfcounter_descriptors_ctr);
4541 register_counter ("Event: Performance counter samples", &perfcounter_samples_ctr);
4542 register_counter ("Event: Coverage methods", &coverage_methods_ctr);
4543 register_counter ("Event: Coverage statements", &coverage_statements_ctr);
4544 register_counter ("Event: Coverage classes", &coverage_classes_ctr);
4545 register_counter ("Event: Coverage assemblies", &coverage_assemblies_ctr);
4547 counters_init (profiler);
4550 * We must start the helper thread before the writer thread. This is
4551 * because the helper thread sets up the command port which is written to
4552 * the log header by the writer thread.
4554 start_helper_thread (profiler);
4555 start_writer_thread (profiler);
4556 start_dumper_thread (profiler);
4560 create_profiler (const char *args, const char *filename, GPtrArray *filters)
4563 int force_delete = 0;
4565 log_profiler = (MonoProfiler *) g_calloc (1, sizeof (MonoProfiler));
4566 log_profiler->args = pstrdup (args);
4567 log_profiler->command_port = command_port;
4569 if (filename && *filename == '-') {
4572 g_warning ("WARNING: the output:-FILENAME option is deprecated, the profiler now always overrides the output file\n");
4575 //If filename begin with +, append the pid at the end
4576 if (filename && *filename == '+')
4577 filename = g_strdup_printf ("%s.%d", filename + 1, getpid ());
4582 filename = "|mprof-report -";
4584 filename = "output.mlpd";
4585 nf = (char*)filename;
4587 nf = new_filename (filename);
4589 int s = strlen (nf) + 32;
4590 char *p = (char *) g_malloc (s);
4591 snprintf (p, s, "|mprof-report '--out=%s' -", nf);
4597 log_profiler->file = popen (nf + 1, "w");
4598 log_profiler->pipe_output = 1;
4599 } else if (*nf == '#') {
4600 int fd = strtol (nf + 1, NULL, 10);
4601 log_profiler->file = fdopen (fd, "a");
4605 log_profiler->file = fopen (nf, "wb");
4607 if (!log_profiler->file) {
4608 fprintf (stderr, "Cannot create profiler output: %s\n", nf);
4612 #if defined (HAVE_SYS_ZLIB)
4614 log_profiler->gzfile = gzdopen (fileno (log_profiler->file), "wb");
4618 * If you hit this assert while increasing MAX_FRAMES, you need to increase
4619 * SAMPLE_BLOCK_SIZE as well.
4621 g_assert (SAMPLE_SLOT_SIZE (MAX_FRAMES) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (SAMPLE_BLOCK_SIZE));
4623 // FIXME: We should free this stuff too.
4624 mono_lock_free_allocator_init_size_class (&log_profiler->sample_size_class, SAMPLE_SLOT_SIZE (num_frames), SAMPLE_BLOCK_SIZE);
4625 mono_lock_free_allocator_init_allocator (&log_profiler->sample_allocator, &log_profiler->sample_size_class, MONO_MEM_ACCOUNT_PROFILER);
4627 mono_lock_free_queue_init (&log_profiler->sample_reuse_queue);
4629 g_assert (sizeof (WriterQueueEntry) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (WRITER_ENTRY_BLOCK_SIZE));
4631 // FIXME: We should free this stuff too.
4632 mono_lock_free_allocator_init_size_class (&log_profiler->writer_entry_size_class, sizeof (WriterQueueEntry), WRITER_ENTRY_BLOCK_SIZE);
4633 mono_lock_free_allocator_init_allocator (&log_profiler->writer_entry_allocator, &log_profiler->writer_entry_size_class, MONO_MEM_ACCOUNT_PROFILER);
4635 mono_lock_free_queue_init (&log_profiler->writer_queue);
4636 mono_os_sem_init (&log_profiler->writer_queue_sem, 0);
4638 mono_lock_free_queue_init (&log_profiler->dumper_queue);
4639 mono_os_sem_init (&log_profiler->dumper_queue_sem, 0);
4641 mono_os_mutex_init (&log_profiler->method_table_mutex);
4642 log_profiler->method_table = mono_conc_hashtable_new (NULL, NULL);
4645 coverage_init (log_profiler);
4646 log_profiler->coverage_filters = filters;
4648 log_profiler->startup_time = current_time ();
4652 * declaration to silence the compiler: this is the entry point that
4653 * mono will load from the shared library and call.
4656 mono_profiler_init (const char *desc);
4659 mono_profiler_init_log (const char *desc);
4662 * this is the entry point that will be used when the profiler
4663 * is embedded inside the main executable.
4666 mono_profiler_init_log (const char *desc)
4668 mono_profiler_init (desc);
4672 mono_profiler_init (const char *desc)
4674 GPtrArray *filters = NULL;
4676 proflog_parse_args (&config, desc [3] == ':' ? desc + 4 : "");
4678 //XXX maybe later cleanup to use config directly
4679 nocalls = !(config.effective_mask & PROFLOG_CALL_EVENTS);
4680 no_counters = !(config.effective_mask & PROFLOG_COUNTER_EVENTS);
4681 do_report = config.do_report;
4682 do_debug = config.do_debug;
4683 do_heap_shot = (config.effective_mask & PROFLOG_HEAPSHOT_FEATURE);
4684 hs_mode_ondemand = config.hs_mode_ondemand;
4685 hs_mode_ms = config.hs_mode_ms;
4686 hs_mode_gc = config.hs_mode_gc;
4687 do_mono_sample = (config.effective_mask & PROFLOG_SAMPLING_FEATURE);
4688 use_zip = config.use_zip;
4689 command_port = config.command_port;
4690 num_frames = config.num_frames;
4691 notraces = config.notraces;
4692 max_allocated_sample_hits = config.max_allocated_sample_hits;
4693 max_call_depth = config.max_call_depth;
4694 do_coverage = (config.effective_mask & PROFLOG_CODE_COV_FEATURE);
4695 debug_coverage = config.debug_coverage;
4696 only_coverage = config.only_coverage;
4698 if (config.cov_filter_files) {
4699 filters = g_ptr_array_new ();
4701 for (i = 0; i < config.cov_filter_files->len; ++i) {
4702 const char *name = config.cov_filter_files->pdata [i];
4703 parse_cov_filter_file (filters, name);
4711 create_profiler (desc, config.output_filename, filters);
4713 mono_lls_init (&profiler_thread_list, NULL);
4715 MonoProfilerHandle handle = log_profiler->handle = mono_profiler_install (log_profiler);
4717 //Required callbacks
4718 mono_profiler_set_runtime_shutdown_end_callback (handle, log_shutdown);
4719 mono_profiler_set_runtime_initialized_callback (handle, runtime_initialized);
4721 mono_profiler_set_gc_event_callback (handle, gc_event);
4722 mono_profiler_set_gc_resize_callback (handle, gc_resize);
4723 mono_profiler_set_thread_started_callback (handle, thread_start);
4724 mono_profiler_set_thread_stopped_callback (handle, thread_end);
4726 //It's questionable whether we actually want this to be mandatory, maybe put it behind the actual event?
4727 mono_profiler_set_thread_name_callback (handle, thread_name);
4729 if (config.effective_mask & PROFLOG_DOMAIN_EVENTS) {
4730 mono_profiler_set_domain_loaded_callback (handle, domain_loaded);
4731 mono_profiler_set_domain_unloading_callback (handle, domain_unloaded);
4732 mono_profiler_set_domain_name_callback (handle, domain_name);
4735 if (config.effective_mask & PROFLOG_ASSEMBLY_EVENTS) {
4736 mono_profiler_set_assembly_loaded_callback (handle, assembly_loaded);
4737 mono_profiler_set_assembly_unloading_callback (handle, assembly_unloaded);
4740 if (config.effective_mask & PROFLOG_MODULE_EVENTS) {
4741 mono_profiler_set_image_loaded_callback (handle, image_loaded);
4742 mono_profiler_set_image_unloading_callback (handle, image_unloaded);
4745 if (config.effective_mask & PROFLOG_CLASS_EVENTS)
4746 mono_profiler_set_class_loaded_callback (handle, class_loaded);
4748 if (config.effective_mask & PROFLOG_JIT_COMPILATION_EVENTS) {
4749 mono_profiler_set_jit_done_callback (handle, method_jitted);
4750 mono_profiler_set_jit_code_buffer_callback (handle, code_buffer_new);
4753 if (config.effective_mask & PROFLOG_EXCEPTION_EVENTS) {
4754 mono_profiler_set_exception_throw_callback (handle, throw_exc);
4755 mono_profiler_set_exception_clause_callback (handle, clause_exc);
4758 if (config.effective_mask & PROFLOG_ALLOCATION_EVENTS) {
4759 mono_profiler_enable_allocations ();
4760 mono_profiler_set_gc_allocation_callback (handle, gc_alloc);
4763 //PROFLOG_GC_EVENTS is mandatory
4764 //PROFLOG_THREAD_EVENTS is mandatory
4766 if (config.effective_mask & PROFLOG_CALL_EVENTS) {
4767 mono_profiler_set_call_instrumentation_filter_callback (handle, method_filter);
4768 mono_profiler_set_method_enter_callback (handle, method_enter);
4769 mono_profiler_set_method_leave_callback (handle, method_leave);
4770 mono_profiler_set_method_exception_leave_callback (handle, method_exc_leave);
4773 if (config.effective_mask & PROFLOG_INS_COVERAGE_EVENTS)
4774 mono_profiler_set_coverage_filter_callback (handle, coverage_filter);
4776 if (config.effective_mask & PROFLOG_SAMPLING_EVENTS) {
4777 mono_profiler_enable_sampling (handle);
4779 if (!mono_profiler_set_sample_mode (handle, config.sampling_mode, config.sample_freq))
4780 g_warning ("Another profiler controls sampling parameters; the log profiler will not be able to modify them");
4782 mono_profiler_set_sample_hit_callback (handle, mono_sample_hit);
4785 if (config.effective_mask & PROFLOG_MONITOR_EVENTS) {
4786 mono_profiler_set_monitor_contention_callback (handle, monitor_contention);
4787 mono_profiler_set_monitor_acquired_callback (handle, monitor_acquired);
4788 mono_profiler_set_monitor_failed_callback (handle, monitor_failed);
4791 if (config.effective_mask & PROFLOG_GC_MOVES_EVENTS)
4792 mono_profiler_set_gc_moves_callback (handle, gc_moves);
4794 if (config.effective_mask & PROFLOG_GC_ROOT_EVENTS)
4795 mono_profiler_set_gc_roots_callback (handle, gc_roots);
4797 if (config.effective_mask & PROFLOG_CONTEXT_EVENTS) {
4798 mono_profiler_set_context_loaded_callback (handle, context_loaded);
4799 mono_profiler_set_context_unloaded_callback (handle, context_unloaded);
4802 if (config.effective_mask & PROFLOG_FINALIZATION_EVENTS) {
4803 mono_profiler_set_gc_finalizing_callback (handle, finalize_begin);
4804 mono_profiler_set_gc_finalized_callback (handle, finalize_end);
4805 mono_profiler_set_gc_finalizing_object_callback (handle, finalize_object_begin);
4806 mono_profiler_set_gc_finalized_object_callback (handle, finalize_object_end);
4807 } else if (ENABLED (PROFLOG_HEAPSHOT_FEATURE) && config.hs_mode_ondemand) {
4808 //On Demand heapshot uses the finalizer thread to force a collection and thus a heapshot
4809 mono_profiler_set_gc_finalized_callback (handle, finalize_end);
4812 //PROFLOG_COUNTER_EVENTS is a pseudo event controled by the no_counters global var
4814 if (config.effective_mask & PROFLOG_GC_HANDLE_EVENTS) {
4815 mono_profiler_set_gc_handle_created_callback (handle, gc_handle_created);
4816 mono_profiler_set_gc_handle_deleted_callback (handle, gc_handle_deleted);