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 debug_coverage = FALSE;
86 static int max_allocated_sample_hits;
88 #define ENABLED(EVT) (config.effective_mask & (EVT))
90 // Statistics for internal profiler data structures.
91 static gint32 sample_allocations_ctr,
92 buffer_allocations_ctr;
94 // Statistics for profiler events.
95 static gint32 sync_points_ctr,
104 gc_handle_creations_ctr,
105 gc_handle_deletions_ctr,
108 finalize_object_begins_ctr,
109 finalize_object_ends_ctr,
113 assembly_unloads_ctr,
118 method_exception_exits_ctr,
121 exception_throws_ctr,
122 exception_clauses_ctr,
135 counter_descriptors_ctr,
137 perfcounter_descriptors_ctr,
138 perfcounter_samples_ctr,
139 coverage_methods_ctr,
140 coverage_statements_ctr,
141 coverage_classes_ctr,
142 coverage_assemblies_ctr;
144 static MonoLinkedListSet profiler_thread_list;
150 * The file is composed by a header followed by 0 or more buffers.
151 * Each buffer contains events that happened on a thread: for a given thread
152 * buffers that appear later in the file are guaranteed to contain events
153 * that happened later in time. Buffers from separate threads could be interleaved,
155 * Buffers are not required to be aligned.
158 * [id: 4 bytes] constant value: LOG_HEADER_ID
159 * [major: 1 byte] [minor: 1 byte] major and minor version of the log profiler
160 * [format: 1 byte] version of the data format for the rest of the file
161 * [ptrsize: 1 byte] size in bytes of a pointer in the profiled program
162 * [startup time: 8 bytes] time in milliseconds since the unix epoch when the program started
163 * [timer overhead: 4 bytes] approximate overhead in nanoseconds of the timer
164 * [flags: 4 bytes] file format flags, should be 0 for now
165 * [pid: 4 bytes] pid of the profiled process
166 * [port: 2 bytes] tcp port for server if != 0
167 * [args size: 4 bytes] size of args
168 * [args: string] arguments passed to the profiler
169 * [arch size: 4 bytes] size of arch
170 * [arch: string] architecture the profiler is running on
171 * [os size: 4 bytes] size of os
172 * [os: string] operating system the profiler is running on
174 * The multiple byte integers are in little-endian format.
177 * [buffer header] [event]*
178 * Buffers have a fixed-size header followed by 0 or more bytes of event data.
179 * Timing information and other values in the event data are usually stored
180 * as uleb128 or sleb128 integers. To save space, as noted for each item below,
181 * some data is represented as a difference between the actual value and
182 * either the last value of the same type (like for timing information) or
183 * as the difference from a value stored in a buffer header.
185 * For timing information the data is stored as uleb128, since timing
186 * increases in a monotonic way in each thread: the value is the number of
187 * nanoseconds to add to the last seen timing data in a buffer. The first value
188 * in a buffer will be calculated from the time_base field in the buffer head.
190 * Object or heap sizes are stored as uleb128.
191 * Pointer differences are stored as sleb128, instead.
193 * If an unexpected value is found, the rest of the buffer should be ignored,
194 * as generally the later values need the former to be interpreted correctly.
196 * buffer header format:
197 * [bufid: 4 bytes] constant value: BUF_ID
198 * [len: 4 bytes] size of the data following the buffer header
199 * [time_base: 8 bytes] time base in nanoseconds since an unspecified epoch
200 * [ptr_base: 8 bytes] base value for pointers
201 * [obj_base: 8 bytes] base value for object addresses
202 * [thread id: 8 bytes] system-specific thread ID (pthread_t for example)
203 * [method_base: 8 bytes] base value for MonoMethod pointers
206 * [extended info: upper 4 bits] [type: lower 4 bits]
207 * [time diff: uleb128] nanoseconds since last timing
209 * The data that follows depends on type and the extended info.
210 * Type is one of the enum values in mono-profiler-log.h: TYPE_ALLOC, TYPE_GC,
211 * TYPE_METADATA, TYPE_METHOD, TYPE_EXCEPTION, TYPE_MONITOR, TYPE_HEAP.
212 * The extended info bits are interpreted based on type, see
213 * each individual event description below.
214 * strings are represented as a 0-terminated utf8 sequence.
217 * [num: uleb128] number of frames following
218 * [frame: sleb128]* mum MonoMethod* as a pointer difference from the last such
219 * pointer or the buffer method_base
223 * exinfo: zero or TYPE_ALLOC_BT
224 * [ptr: sleb128] class as a byte difference from ptr_base
225 * [obj: sleb128] object address as a byte difference from obj_base
226 * [size: uleb128] size of the object in the heap
227 * If exinfo == TYPE_ALLOC_BT, a backtrace follows.
231 * exinfo: one of TYPE_GC_EVENT, TYPE_GC_RESIZE, TYPE_GC_MOVE, TYPE_GC_HANDLE_CREATED[_BT],
232 * TYPE_GC_HANDLE_DESTROYED[_BT], TYPE_GC_FINALIZE_START, TYPE_GC_FINALIZE_END,
233 * TYPE_GC_FINALIZE_OBJECT_START, TYPE_GC_FINALIZE_OBJECT_END
234 * if exinfo == TYPE_GC_RESIZE
235 * [heap_size: uleb128] new heap size
236 * if exinfo == TYPE_GC_EVENT
237 * [event type: byte] GC event (MONO_GC_EVENT_* from profiler.h)
238 * [generation: byte] GC generation event refers to
239 * if exinfo == TYPE_GC_MOVE
240 * [num_objects: uleb128] number of object moves that follow
241 * [objaddr: sleb128]+ num_objects object pointer differences from obj_base
242 * num is always an even number: the even items are the old
243 * addresses, the odd numbers are the respective new object addresses
244 * if exinfo == TYPE_GC_HANDLE_CREATED[_BT]
245 * [handle_type: uleb128] MonoGCHandleType enum value
246 * upper bits reserved as flags
247 * [handle: uleb128] GC handle value
248 * [objaddr: sleb128] object pointer differences from obj_base
249 * If exinfo == TYPE_GC_HANDLE_CREATED_BT, a backtrace follows.
250 * if exinfo == TYPE_GC_HANDLE_DESTROYED[_BT]
251 * [handle_type: uleb128] MonoGCHandleType enum value
252 * upper bits reserved as flags
253 * [handle: uleb128] GC handle value
254 * If exinfo == TYPE_GC_HANDLE_DESTROYED_BT, a backtrace follows.
255 * if exinfo == TYPE_GC_FINALIZE_OBJECT_{START,END}
256 * [object: sleb128] the object as a difference from obj_base
258 * type metadata format:
259 * type: TYPE_METADATA
260 * exinfo: one of: TYPE_END_LOAD, TYPE_END_UNLOAD (optional for TYPE_THREAD and TYPE_DOMAIN,
261 * doesn't occur for TYPE_CLASS)
262 * [mtype: byte] metadata type, one of: TYPE_CLASS, TYPE_IMAGE, TYPE_ASSEMBLY, TYPE_DOMAIN,
263 * TYPE_THREAD, TYPE_CONTEXT
264 * [pointer: sleb128] pointer of the metadata type depending on mtype
265 * if mtype == TYPE_CLASS
266 * [image: sleb128] MonoImage* as a pointer difference from ptr_base
267 * [name: string] full class name
268 * if mtype == TYPE_IMAGE
269 * [name: string] image file name
270 * if mtype == TYPE_ASSEMBLY
271 * [image: sleb128] MonoImage* as a pointer difference from ptr_base
272 * [name: string] assembly name
273 * if mtype == TYPE_DOMAIN && exinfo == 0
274 * [name: string] domain friendly name
275 * if mtype == TYPE_CONTEXT
276 * [domain: sleb128] domain id as pointer
277 * if mtype == TYPE_THREAD && exinfo == 0
278 * [name: string] thread name
280 * type method format:
282 * exinfo: one of: TYPE_LEAVE, TYPE_ENTER, TYPE_EXC_LEAVE, TYPE_JIT
283 * [method: sleb128] MonoMethod* as a pointer difference from the last such
284 * pointer or the buffer method_base
285 * if exinfo == TYPE_JIT
286 * [code address: sleb128] pointer to the native code as a diff from ptr_base
287 * [code size: uleb128] size of the generated code
288 * [name: string] full method name
290 * type exception format:
291 * type: TYPE_EXCEPTION
292 * exinfo: zero, TYPE_CLAUSE, or TYPE_THROW_BT
293 * if exinfo == TYPE_CLAUSE
294 * [clause type: byte] MonoExceptionEnum enum value
295 * [clause index: uleb128] index of the current clause
296 * [method: sleb128] MonoMethod* as a pointer difference from the last such
297 * pointer or the buffer method_base
298 * [object: sleb128] the exception object as a difference from obj_base
300 * [object: sleb128] the exception object as a difference from obj_base
301 * If exinfo == TYPE_THROW_BT, a backtrace follows.
303 * type runtime format:
305 * exinfo: one of: TYPE_JITHELPER
306 * if exinfo == TYPE_JITHELPER
307 * [type: byte] MonoProfilerCodeBufferType enum value
308 * [buffer address: sleb128] pointer to the native code as a diff from ptr_base
309 * [buffer size: uleb128] size of the generated code
310 * if type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE
311 * [name: string] buffer description name
313 * type monitor format:
315 * exinfo: zero or TYPE_MONITOR_BT
316 * [type: byte] MonoProfilerMonitorEvent enum value
317 * [object: sleb128] the lock object as a difference from obj_base
318 * If exinfo == TYPE_MONITOR_BT, a backtrace follows.
322 * exinfo: one of TYPE_HEAP_START, TYPE_HEAP_END, TYPE_HEAP_OBJECT, TYPE_HEAP_ROOT
323 * if exinfo == TYPE_HEAP_OBJECT
324 * [object: sleb128] the object as a difference from obj_base
325 * [class: sleb128] the object MonoClass* as a difference from ptr_base
326 * [size: uleb128] size of the object on the heap
327 * [num_refs: uleb128] number of object references
328 * each referenced objref is preceded by a uleb128 encoded offset: the
329 * first offset is from the object address and each next offset is relative
330 * to the previous one
331 * [objrefs: sleb128]+ object referenced as a difference from obj_base
332 * The same object can appear multiple times, but only the first time
333 * with size != 0: in the other cases this data will only be used to
334 * provide additional referenced objects.
335 * if exinfo == TYPE_HEAP_ROOT
336 * [num_roots: uleb128] number of root references
337 * [num_gc: uleb128] number of major gcs
338 * [object: sleb128] the object as a difference from obj_base
339 * [root_type: byte] the root_type: MonoProfileGCRootType (profiler.h)
340 * [extra_info: uleb128] the extra_info value
341 * object, root_type and extra_info are repeated num_roots times
345 * exinfo: one of TYPE_SAMPLE_HIT, TYPE_SAMPLE_USYM, TYPE_SAMPLE_UBIN, TYPE_SAMPLE_COUNTERS_DESC, TYPE_SAMPLE_COUNTERS
346 * if exinfo == TYPE_SAMPLE_HIT
347 * [thread: sleb128] thread id as difference from ptr_base
348 * [count: uleb128] number of following instruction addresses
349 * [ip: sleb128]* instruction pointer as difference from ptr_base
350 * [mbt_count: uleb128] number of managed backtrace frames
351 * [method: sleb128]* MonoMethod* as a pointer difference from the last such
352 * pointer or the buffer method_base (the first such method can be also indentified by ip, but this is not neccessarily true)
353 * if exinfo == TYPE_SAMPLE_USYM
354 * [address: sleb128] symbol address as a difference from ptr_base
355 * [size: uleb128] symbol size (may be 0 if unknown)
356 * [name: string] symbol name
357 * if exinfo == TYPE_SAMPLE_UBIN
358 * [address: sleb128] address where binary has been loaded as a difference from ptr_base
359 * [offset: uleb128] file offset of mapping (the same file can be mapped multiple times)
360 * [size: uleb128] memory size
361 * [name: string] binary name
362 * if exinfo == TYPE_SAMPLE_COUNTERS_DESC
363 * [len: uleb128] number of counters
365 * [section: uleb128] section of counter
366 * if section == MONO_COUNTER_PERFCOUNTERS:
367 * [section_name: string] section name of counter
368 * [name: string] name of counter
369 * [type: byte] type of counter
370 * [unit: byte] unit of counter
371 * [variance: byte] variance of counter
372 * [index: uleb128] unique index of counter
373 * if exinfo == TYPE_SAMPLE_COUNTERS
375 * [index: uleb128] unique index of counter
378 * [type: byte] type of counter value
381 * [0: byte] 0 -> value is null
383 * [1: byte] 1 -> value is not null
384 * [value: string] counter value
386 * [value: uleb128/sleb128/double] counter value, can be sleb128, uleb128 or double (determined by using type)
388 * type coverage format
389 * type: TYPE_COVERAGE
390 * exinfo: one of TYPE_COVERAGE_METHOD, TYPE_COVERAGE_STATEMENT, TYPE_COVERAGE_ASSEMBLY, TYPE_COVERAGE_CLASS
391 * if exinfo == TYPE_COVERAGE_METHOD
392 * [assembly: string] name of assembly
393 * [class: string] name of the class
394 * [name: string] name of the method
395 * [signature: string] the signature of the method
396 * [filename: string] the file path of the file that contains this method
397 * [token: uleb128] the method token
398 * [method_id: uleb128] an ID for this data to associate with the buffers of TYPE_COVERAGE_STATEMENTS
399 * [len: uleb128] the number of TYPE_COVERAGE_BUFFERS associated with this method
400 * if exinfo == TYPE_COVERAGE_STATEMENTS
401 * [method_id: uleb128] an the TYPE_COVERAGE_METHOD buffer to associate this with
402 * [offset: uleb128] the il offset relative to the previous offset
403 * [counter: uleb128] the counter for this instruction
404 * [line: uleb128] the line of filename containing this instruction
405 * [column: uleb128] the column containing this instruction
406 * if exinfo == TYPE_COVERAGE_ASSEMBLY
407 * [name: string] assembly name
408 * [guid: string] assembly GUID
409 * [filename: string] assembly filename
410 * [number_of_methods: uleb128] the number of methods in this assembly
411 * [fully_covered: uleb128] the number of fully covered methods
412 * [partially_covered: uleb128] the number of partially covered methods
413 * currently partially_covered will always be 0, and fully_covered is the
414 * number of methods that are fully and partially covered.
415 * if exinfo == TYPE_COVERAGE_CLASS
416 * [name: string] assembly name
417 * [class: string] class name
418 * [number_of_methods: uleb128] the number of methods in this class
419 * [fully_covered: uleb128] the number of fully covered methods
420 * [partially_covered: uleb128] the number of partially covered methods
421 * currently partially_covered will always be 0, and fully_covered is the
422 * number of methods that are fully and partially covered.
426 * exinfo: one of: TYPE_SYNC_POINT
427 * if exinfo == TYPE_SYNC_POINT
428 * [type: byte] MonoProfilerSyncPointType enum value
431 // Pending data to be written to the log, for a single thread.
432 // Threads periodically flush their own LogBuffers by calling safe_send
433 typedef struct _LogBuffer LogBuffer;
435 // Next (older) LogBuffer in processing queue
441 uintptr_t method_base;
442 uintptr_t last_method;
446 // Bytes allocated for this LogBuffer
449 // Start of currently unused space in buffer
450 unsigned char* cursor;
452 // Pointer to start-of-structure-plus-size (for convenience)
453 unsigned char* buf_end;
455 // Start of data in buffer. Contents follow "buffer format" described above.
456 unsigned char buf [1];
460 MonoLinkedListSetNode node;
462 // Convenience pointer to the profiler structure.
463 MonoProfiler *profiler;
465 // Was this thread added to the LLS?
468 // The current log buffer for this thread.
471 // Methods referenced by events in `buffer`, see `MethodInfo`.
474 // Current call depth for enter/leave events.
477 // Indicates whether this thread is currently writing to its `buffer`.
480 // Has this thread written a thread end event to `buffer`?
483 // Stored in `buffer_lock_state` to take the exclusive lock.
485 } MonoProfilerThread;
487 // Do not use these TLS macros directly unless you know what you're doing.
491 #define PROF_TLS_SET(VAL) (TlsSetValue (profiler_tls, (VAL)))
492 #define PROF_TLS_GET() ((MonoProfilerThread *) TlsGetValue (profiler_tls))
493 #define PROF_TLS_INIT() (profiler_tls = TlsAlloc ())
494 #define PROF_TLS_FREE() (TlsFree (profiler_tls))
496 static DWORD profiler_tls;
500 #define PROF_TLS_SET(VAL) (profiler_tls = (VAL))
501 #define PROF_TLS_GET() (profiler_tls)
502 #define PROF_TLS_INIT()
503 #define PROF_TLS_FREE()
505 static __thread MonoProfilerThread *profiler_tls;
509 #define PROF_TLS_SET(VAL) (pthread_setspecific (profiler_tls, (VAL)))
510 #define PROF_TLS_GET() ((MonoProfilerThread *) pthread_getspecific (profiler_tls))
511 #define PROF_TLS_INIT() (pthread_key_create (&profiler_tls, NULL))
512 #define PROF_TLS_FREE() (pthread_key_delete (profiler_tls))
514 static pthread_key_t profiler_tls;
521 return (uintptr_t) mono_native_thread_id_get ();
528 return (uintptr_t) GetCurrentProcessId ();
530 return (uintptr_t) getpid ();
535 static mach_timebase_info_data_t timebase_info;
536 #elif defined (HOST_WIN32)
537 static LARGE_INTEGER pcounter_freq;
540 #define TICKS_PER_SEC 1000000000LL
546 uint64_t time = mach_absolute_time ();
548 time *= timebase_info.numer;
549 time /= timebase_info.denom;
552 #elif defined (HOST_WIN32)
555 QueryPerformanceCounter (&value);
557 return value.QuadPart * TICKS_PER_SEC / pcounter_freq.QuadPart;
558 #elif defined (CLOCK_MONOTONIC)
559 struct timespec tspec;
561 clock_gettime (CLOCK_MONOTONIC, &tspec);
563 return ((uint64_t) tspec.tv_sec * TICKS_PER_SEC + tspec.tv_nsec);
567 gettimeofday (&tv, NULL);
569 return ((uint64_t) tv.tv_sec * TICKS_PER_SEC + tv.tv_usec * 1000);
573 static int timer_overhead;
579 mach_timebase_info (&timebase_info);
580 #elif defined (HOST_WIN32)
581 QueryPerformanceFrequency (&pcounter_freq);
584 uint64_t time_start = current_time ();
586 for (int i = 0; i < 256; ++i)
589 uint64_t time_end = current_time ();
591 timer_overhead = (time_end - time_start) / 256;
595 * These macros should be used when writing an event to a log buffer. They
596 * take care of a bunch of stuff that can be repetitive and error-prone, such
597 * as attaching the current thread, acquiring/releasing the buffer lock,
598 * incrementing the event counter, expanding the log buffer, etc. They also
599 * create a scope so that it's harder to leak the LogBuffer pointer, which can
600 * be problematic as the pointer is unstable when the buffer lock isn't
603 * If the calling thread is already attached, these macros will not alter its
604 * attach mode (i.e. whether it's added to the LLS). If the thread is not
605 * attached, init_thread () will be called with add_to_lls = TRUE.
608 #define ENTER_LOG(COUNTER, BUFFER, SIZE) \
610 MonoProfilerThread *thread__ = get_thread (); \
611 if (thread__->attached) \
613 g_assert (!thread__->busy && "Why are we trying to write a new event while already writing one?"); \
614 thread__->busy = TRUE; \
615 InterlockedIncrement ((COUNTER)); \
616 LogBuffer *BUFFER = ensure_logbuf_unsafe (thread__, (SIZE))
618 #define EXIT_LOG_EXPLICIT(SEND) \
619 thread__->busy = FALSE; \
621 send_log_unsafe (TRUE); \
622 if (thread__->attached) \
626 // Pass these to EXIT_LOG_EXPLICIT () for easier reading.
628 #define NO_SEND FALSE
630 #define EXIT_LOG EXIT_LOG_EXPLICIT (DO_SEND)
632 typedef struct _BinaryObject BinaryObject;
633 struct _BinaryObject {
639 static MonoProfiler *log_profiler;
641 struct _MonoProfiler {
642 MonoProfilerHandle handle;
644 #if defined (HAVE_SYS_ZLIB)
648 uint64_t startup_time;
653 MonoNativeThreadId helper_thread;
654 MonoNativeThreadId writer_thread;
655 MonoNativeThreadId dumper_thread;
656 volatile gint32 run_writer_thread;
657 MonoLockFreeAllocSizeClass writer_entry_size_class;
658 MonoLockFreeAllocator writer_entry_allocator;
659 MonoLockFreeQueue writer_queue;
660 MonoSemType writer_queue_sem;
661 MonoConcurrentHashTable *method_table;
662 mono_mutex_t method_table_mutex;
663 volatile gint32 run_dumper_thread;
664 MonoLockFreeQueue dumper_queue;
665 MonoSemType dumper_queue_sem;
666 MonoLockFreeAllocSizeClass sample_size_class;
667 MonoLockFreeAllocator sample_allocator;
668 MonoLockFreeQueue sample_reuse_queue;
669 BinaryObject *binary_objects;
670 GPtrArray *coverage_filters;
674 MonoLockFreeQueueNode node;
679 #define WRITER_ENTRY_BLOCK_SIZE (mono_pagesize ())
688 pstrdup (const char *s)
690 int len = strlen (s) + 1;
691 char *p = (char *) g_malloc (len);
697 alloc_buffer (int size)
699 return mono_valloc (NULL, size, MONO_MMAP_READ | MONO_MMAP_WRITE | MONO_MMAP_ANON | MONO_MMAP_PRIVATE, MONO_MEM_ACCOUNT_PROFILER);
703 free_buffer (void *buf, int size)
705 mono_vfree (buf, size, MONO_MEM_ACCOUNT_PROFILER);
709 create_buffer (uintptr_t tid, int bytes)
711 LogBuffer* buf = (LogBuffer *) alloc_buffer (MAX (BUFFER_SIZE, bytes));
713 InterlockedIncrement (&buffer_allocations_ctr);
715 buf->size = BUFFER_SIZE;
716 buf->time_base = current_time ();
717 buf->last_time = buf->time_base;
718 buf->buf_end = (unsigned char *) buf + buf->size;
719 buf->cursor = buf->buf;
720 buf->thread_id = tid;
726 * Must be called with the reader lock held if thread is the current thread, or
727 * the exclusive lock if thread is a different thread. However, if thread is
728 * the current thread, and init_thread () was called with add_to_lls = FALSE,
729 * then no locking is necessary.
732 init_buffer_state (MonoProfilerThread *thread)
734 thread->buffer = create_buffer (thread->node.key, 0);
735 thread->methods = NULL;
739 clear_hazard_pointers (MonoThreadHazardPointers *hp)
741 mono_hazard_pointer_clear (hp, 0);
742 mono_hazard_pointer_clear (hp, 1);
743 mono_hazard_pointer_clear (hp, 2);
746 static MonoProfilerThread *
747 init_thread (MonoProfiler *prof, gboolean add_to_lls)
749 MonoProfilerThread *thread = PROF_TLS_GET ();
752 * Sometimes we may try to initialize a thread twice. One example is the
753 * main thread: We initialize it when setting up the profiler, but we will
754 * also get a thread_start () callback for it. Another example is when
755 * attaching new threads to the runtime: We may get a gc_alloc () callback
756 * for that thread's thread object (where we initialize it), soon followed
757 * by a thread_start () callback.
759 * These cases are harmless anyhow. Just return if we've already done the
760 * initialization work.
765 thread = g_malloc (sizeof (MonoProfilerThread));
766 thread->node.key = thread_id ();
767 thread->profiler = prof;
768 thread->attached = add_to_lls;
769 thread->call_depth = 0;
771 thread->ended = FALSE;
773 init_buffer_state (thread);
775 thread->small_id = mono_thread_info_register_small_id ();
778 * Some internal profiler threads don't need to be cleaned up
779 * by the main thread on shutdown.
782 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
783 g_assert (mono_lls_insert (&profiler_thread_list, hp, &thread->node) && "Why can't we insert the thread in the LLS?");
784 clear_hazard_pointers (hp);
787 PROF_TLS_SET (thread);
792 // Only valid if init_thread () was called with add_to_lls = FALSE.
794 deinit_thread (MonoProfilerThread *thread)
796 g_assert (!thread->attached && "Why are we manually freeing an attached thread?");
802 static MonoProfilerThread *
805 return init_thread (log_profiler, TRUE);
808 // Only valid if init_thread () was called with add_to_lls = FALSE.
810 ensure_logbuf_unsafe (MonoProfilerThread *thread, int bytes)
812 LogBuffer *old = thread->buffer;
814 if (old->cursor + bytes < old->buf_end)
817 LogBuffer *new_ = create_buffer (thread->node.key, bytes);
819 thread->buffer = new_;
825 * This is a reader/writer spin lock of sorts used to protect log buffers.
826 * When a thread modifies its own log buffer, it increments the reader
827 * count. When a thread wants to access log buffers of other threads, it
828 * takes the exclusive lock.
830 * `buffer_lock_state` holds the reader count in its lower 16 bits, and
831 * the small ID of the thread currently holding the exclusive (writer)
832 * lock in its upper 16 bits. Both can be zero. It's important that the
833 * whole lock state is a single word that can be read/written atomically
834 * to avoid race conditions where there could end up being readers while
835 * the writer lock is held.
837 * The lock is writer-biased. When a thread wants to take the exclusive
838 * lock, it increments `buffer_lock_exclusive_intent` which will make new
839 * readers spin until it's back to zero, then takes the exclusive lock
840 * once the reader count has reached zero. After releasing the exclusive
841 * lock, it decrements `buffer_lock_exclusive_intent`, which, when it
842 * reaches zero again, allows readers to increment the reader count.
844 * The writer bias is necessary because we take the exclusive lock in
845 * `gc_event ()` during STW. If the writer bias was not there, and a
846 * program had a large number of threads, STW-induced pauses could be
847 * significantly longer than they have to be. Also, we emit periodic
848 * sync points from the helper thread, which requires taking the
849 * exclusive lock, and we need those to arrive with a reasonably
850 * consistent frequency so that readers don't have to queue up too many
851 * events between sync points.
853 * The lock does not support recursion.
855 static volatile gint32 buffer_lock_state;
856 static volatile gint32 buffer_lock_exclusive_intent;
862 * If the thread holding the exclusive lock tries to modify the
863 * reader count, just make it a no-op. This way, we also avoid
864 * invoking the GC safe point macros below, which could break if
865 * done from a thread that is currently the initiator of STW.
867 * In other words, we rely on the fact that the GC thread takes
868 * the exclusive lock in the gc_event () callback when the world
871 if (InterlockedRead (&buffer_lock_state) != get_thread ()->small_id << 16) {
878 // Hold off if a thread wants to take the exclusive lock.
879 while (InterlockedRead (&buffer_lock_exclusive_intent))
880 mono_thread_info_yield ();
882 old = InterlockedRead (&buffer_lock_state);
884 // Is a thread holding the exclusive lock?
886 mono_thread_info_yield ();
891 } while (InterlockedCompareExchange (&buffer_lock_state, new_, old) != old);
896 mono_memory_barrier ();
902 mono_memory_barrier ();
904 gint32 state = InterlockedRead (&buffer_lock_state);
906 // See the comment in buffer_lock ().
907 if (state == PROF_TLS_GET ()->small_id << 16)
910 g_assert (state && "Why are we decrementing a zero reader count?");
911 g_assert (!(state >> 16) && "Why is the exclusive lock held?");
913 InterlockedDecrement (&buffer_lock_state);
917 buffer_lock_excl (void)
919 gint32 new_ = get_thread ()->small_id << 16;
921 g_assert (InterlockedRead (&buffer_lock_state) != new_ && "Why are we taking the exclusive lock twice?");
923 InterlockedIncrement (&buffer_lock_exclusive_intent);
927 while (InterlockedCompareExchange (&buffer_lock_state, new_, 0))
928 mono_thread_info_yield ();
932 mono_memory_barrier ();
936 buffer_unlock_excl (void)
938 mono_memory_barrier ();
940 gint32 state = InterlockedRead (&buffer_lock_state);
941 gint32 excl = state >> 16;
943 g_assert (excl && "Why is the exclusive lock not held?");
944 g_assert (excl == PROF_TLS_GET ()->small_id && "Why does another thread hold the exclusive lock?");
945 g_assert (!(state & 0xFFFF) && "Why are there readers when the exclusive lock is held?");
947 InterlockedWrite (&buffer_lock_state, 0);
948 InterlockedDecrement (&buffer_lock_exclusive_intent);
952 encode_uleb128 (uint64_t value, uint8_t *buf, uint8_t **endbuf)
957 uint8_t b = value & 0x7f;
960 if (value != 0) /* more bytes to come */
970 encode_sleb128 (intptr_t value, uint8_t *buf, uint8_t **endbuf)
973 int negative = (value < 0);
974 unsigned int size = sizeof (intptr_t) * 8;
982 /* the following is unnecessary if the
983 * implementation of >>= uses an arithmetic rather
984 * than logical shift for a signed left operand
988 value |= - ((intptr_t) 1 <<(size - 7));
990 /* sign bit of byte is second high order bit (0x40) */
991 if ((value == 0 && !(byte & 0x40)) ||
992 (value == -1 && (byte & 0x40)))
1004 emit_byte (LogBuffer *logbuffer, int value)
1006 logbuffer->cursor [0] = value;
1007 logbuffer->cursor++;
1009 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1013 emit_value (LogBuffer *logbuffer, int value)
1015 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
1017 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1021 emit_time (LogBuffer *logbuffer, uint64_t value)
1023 uint64_t tdiff = value - logbuffer->last_time;
1024 encode_uleb128 (tdiff, logbuffer->cursor, &logbuffer->cursor);
1025 logbuffer->last_time = value;
1027 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1031 emit_event_time (LogBuffer *logbuffer, int event, uint64_t time)
1033 emit_byte (logbuffer, event);
1034 emit_time (logbuffer, time);
1038 emit_event (LogBuffer *logbuffer, int event)
1040 emit_event_time (logbuffer, event, current_time ());
1044 emit_svalue (LogBuffer *logbuffer, int64_t value)
1046 encode_sleb128 (value, logbuffer->cursor, &logbuffer->cursor);
1048 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1052 emit_uvalue (LogBuffer *logbuffer, uint64_t value)
1054 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
1056 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1060 emit_ptr (LogBuffer *logbuffer, const void *ptr)
1062 if (!logbuffer->ptr_base)
1063 logbuffer->ptr_base = (uintptr_t) ptr;
1065 emit_svalue (logbuffer, (intptr_t) ptr - logbuffer->ptr_base);
1067 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1071 emit_method_inner (LogBuffer *logbuffer, void *method)
1073 if (!logbuffer->method_base) {
1074 logbuffer->method_base = (intptr_t) method;
1075 logbuffer->last_method = (intptr_t) method;
1078 encode_sleb128 ((intptr_t) ((char *) method - (char *) logbuffer->last_method), logbuffer->cursor, &logbuffer->cursor);
1079 logbuffer->last_method = (intptr_t) method;
1081 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1084 // The reader lock must be held.
1086 register_method_local (MonoMethod *method, MonoJitInfo *ji)
1088 MonoProfilerThread *thread = get_thread ();
1090 if (!mono_conc_hashtable_lookup (thread->profiler->method_table, method)) {
1091 MethodInfo *info = (MethodInfo *) g_malloc (sizeof (MethodInfo));
1093 info->method = method;
1095 info->time = current_time ();
1097 GPtrArray *arr = thread->methods ? thread->methods : (thread->methods = g_ptr_array_new ());
1098 g_ptr_array_add (arr, info);
1103 emit_method (LogBuffer *logbuffer, MonoMethod *method)
1105 register_method_local (method, NULL);
1106 emit_method_inner (logbuffer, method);
1110 emit_obj (LogBuffer *logbuffer, void *ptr)
1112 if (!logbuffer->obj_base)
1113 logbuffer->obj_base = (uintptr_t) ptr >> 3;
1115 emit_svalue (logbuffer, ((uintptr_t) ptr >> 3) - logbuffer->obj_base);
1117 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1121 emit_string (LogBuffer *logbuffer, const char *str, size_t size)
1125 for (; i < size; i++) {
1128 emit_byte (logbuffer, str [i]);
1131 emit_byte (logbuffer, '\0');
1135 emit_double (LogBuffer *logbuffer, double value)
1138 unsigned char buffer[8];
1139 memcpy (buffer, &value, 8);
1140 #if G_BYTE_ORDER == G_BIG_ENDIAN
1141 for (i = 7; i >= 0; i--)
1143 for (i = 0; i < 8; i++)
1145 emit_byte (logbuffer, buffer[i]);
1149 write_int16 (char *buf, int32_t value)
1152 for (i = 0; i < 2; ++i) {
1160 write_int32 (char *buf, int32_t value)
1163 for (i = 0; i < 4; ++i) {
1171 write_int64 (char *buf, int64_t value)
1174 for (i = 0; i < 8; ++i) {
1182 write_header_string (char *p, const char *str)
1184 size_t len = strlen (str) + 1;
1186 p = write_int32 (p, len);
1193 dump_header (MonoProfiler *profiler)
1195 const char *args = profiler->args;
1196 const char *arch = mono_config_get_cpu ();
1197 const char *os = mono_config_get_os ();
1199 char *hbuf = g_malloc (
1200 sizeof (gint32) /* header id */ +
1201 sizeof (gint8) /* major version */ +
1202 sizeof (gint8) /* minor version */ +
1203 sizeof (gint8) /* data version */ +
1204 sizeof (gint8) /* word size */ +
1205 sizeof (gint64) /* startup time */ +
1206 sizeof (gint32) /* timer overhead */ +
1207 sizeof (gint32) /* flags */ +
1208 sizeof (gint32) /* process id */ +
1209 sizeof (gint16) /* command port */ +
1210 sizeof (gint32) + strlen (args) + 1 /* arguments */ +
1211 sizeof (gint32) + strlen (arch) + 1 /* architecture */ +
1212 sizeof (gint32) + strlen (os) + 1 /* operating system */
1216 p = write_int32 (p, LOG_HEADER_ID);
1217 *p++ = LOG_VERSION_MAJOR;
1218 *p++ = LOG_VERSION_MINOR;
1219 *p++ = LOG_DATA_VERSION;
1220 *p++ = sizeof (void *);
1221 p = write_int64 (p, ((uint64_t) time (NULL)) * 1000);
1222 p = write_int32 (p, timer_overhead);
1223 p = write_int32 (p, 0); /* flags */
1224 p = write_int32 (p, process_id ());
1225 p = write_int16 (p, profiler->command_port);
1226 p = write_header_string (p, args);
1227 p = write_header_string (p, arch);
1228 p = write_header_string (p, os);
1230 #if defined (HAVE_SYS_ZLIB)
1231 if (profiler->gzfile) {
1232 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1236 fwrite (hbuf, p - hbuf, 1, profiler->file);
1237 fflush (profiler->file);
1244 * Must be called with the reader lock held if thread is the current thread, or
1245 * the exclusive lock if thread is a different thread. However, if thread is
1246 * the current thread, and init_thread () was called with add_to_lls = FALSE,
1247 * then no locking is necessary.
1250 send_buffer (MonoProfilerThread *thread)
1252 WriterQueueEntry *entry = mono_lock_free_alloc (&thread->profiler->writer_entry_allocator);
1253 entry->methods = thread->methods;
1254 entry->buffer = thread->buffer;
1256 mono_lock_free_queue_node_init (&entry->node, FALSE);
1258 mono_lock_free_queue_enqueue (&thread->profiler->writer_queue, &entry->node);
1259 mono_os_sem_post (&thread->profiler->writer_queue_sem);
1263 free_thread (gpointer p)
1265 MonoProfilerThread *thread = p;
1267 if (!thread->ended) {
1269 * The thread is being cleaned up by the main thread during
1270 * shutdown. This typically happens for internal runtime
1271 * threads. We need to synthesize a thread end event.
1274 InterlockedIncrement (&thread_ends_ctr);
1276 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
1277 LogBuffer *buf = ensure_logbuf_unsafe (thread,
1278 EVENT_SIZE /* event */ +
1279 BYTE_SIZE /* type */ +
1280 LEB128_SIZE /* tid */
1283 emit_event (buf, TYPE_END_UNLOAD | TYPE_METADATA);
1284 emit_byte (buf, TYPE_THREAD);
1285 emit_ptr (buf, (void *) thread->node.key);
1289 send_buffer (thread);
1295 remove_thread (MonoProfilerThread *thread)
1297 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
1299 if (mono_lls_remove (&profiler_thread_list, hp, &thread->node))
1300 mono_thread_hazardous_try_free (thread, free_thread);
1302 clear_hazard_pointers (hp);
1306 dump_buffer (MonoProfiler *profiler, LogBuffer *buf)
1312 dump_buffer (profiler, buf->next);
1314 if (buf->cursor - buf->buf) {
1315 p = write_int32 (p, BUF_ID);
1316 p = write_int32 (p, buf->cursor - buf->buf);
1317 p = write_int64 (p, buf->time_base);
1318 p = write_int64 (p, buf->ptr_base);
1319 p = write_int64 (p, buf->obj_base);
1320 p = write_int64 (p, buf->thread_id);
1321 p = write_int64 (p, buf->method_base);
1323 #if defined (HAVE_SYS_ZLIB)
1324 if (profiler->gzfile) {
1325 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1326 gzwrite (profiler->gzfile, buf->buf, buf->cursor - buf->buf);
1330 fwrite (hbuf, p - hbuf, 1, profiler->file);
1331 fwrite (buf->buf, buf->cursor - buf->buf, 1, profiler->file);
1332 fflush (profiler->file);
1336 free_buffer (buf, buf->size);
1340 dump_buffer_threadless (MonoProfiler *profiler, LogBuffer *buf)
1342 for (LogBuffer *iter = buf; iter; iter = iter->next)
1343 iter->thread_id = 0;
1345 dump_buffer (profiler, buf);
1348 // Only valid if init_thread () was called with add_to_lls = FALSE.
1350 send_log_unsafe (gboolean if_needed)
1352 MonoProfilerThread *thread = PROF_TLS_GET ();
1354 if (!if_needed || (if_needed && thread->buffer->next)) {
1355 if (!thread->attached)
1356 for (LogBuffer *iter = thread->buffer; iter; iter = iter->next)
1357 iter->thread_id = 0;
1359 send_buffer (thread);
1360 init_buffer_state (thread);
1364 // Assumes that the exclusive lock is held.
1366 sync_point_flush (void)
1368 g_assert (InterlockedRead (&buffer_lock_state) == PROF_TLS_GET ()->small_id << 16 && "Why don't we hold the exclusive lock?");
1370 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
1371 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
1373 send_buffer (thread);
1374 init_buffer_state (thread);
1375 } MONO_LLS_FOREACH_SAFE_END
1378 // Assumes that the exclusive lock is held.
1380 sync_point_mark (MonoProfilerSyncPointType type)
1382 g_assert (InterlockedRead (&buffer_lock_state) == PROF_TLS_GET ()->small_id << 16 && "Why don't we hold the exclusive lock?");
1384 ENTER_LOG (&sync_points_ctr, logbuffer,
1385 EVENT_SIZE /* event */ +
1386 LEB128_SIZE /* type */
1389 emit_event (logbuffer, TYPE_META | TYPE_SYNC_POINT);
1390 emit_byte (logbuffer, type);
1392 EXIT_LOG_EXPLICIT (NO_SEND);
1394 send_log_unsafe (FALSE);
1397 // Assumes that the exclusive lock is held.
1399 sync_point (MonoProfilerSyncPointType type)
1401 sync_point_flush ();
1402 sync_point_mark (type);
1406 gc_reference (MonoObject *obj, MonoClass *klass, uintptr_t size, uintptr_t num, MonoObject **refs, uintptr_t *offsets, void *data)
1408 /* account for object alignment in the heap */
1412 ENTER_LOG (&heap_objects_ctr, logbuffer,
1413 EVENT_SIZE /* event */ +
1414 LEB128_SIZE /* obj */ +
1415 LEB128_SIZE /* klass */ +
1416 LEB128_SIZE /* size */ +
1417 LEB128_SIZE /* num */ +
1419 LEB128_SIZE /* offset */ +
1420 LEB128_SIZE /* ref */
1424 emit_event (logbuffer, TYPE_HEAP_OBJECT | TYPE_HEAP);
1425 emit_obj (logbuffer, obj);
1426 emit_ptr (logbuffer, klass);
1427 emit_value (logbuffer, size);
1428 emit_value (logbuffer, num);
1430 uintptr_t last_offset = 0;
1432 for (int i = 0; i < num; ++i) {
1433 emit_value (logbuffer, offsets [i] - last_offset);
1434 last_offset = offsets [i];
1435 emit_obj (logbuffer, refs [i]);
1438 EXIT_LOG_EXPLICIT (DO_SEND);
1443 static unsigned int hs_mode_ms = 0;
1444 static unsigned int hs_mode_gc = 0;
1445 static unsigned int hs_mode_ondemand = 0;
1446 static unsigned int gc_count = 0;
1447 static uint64_t last_hs_time = 0;
1448 static gboolean do_heap_walk = FALSE;
1449 static gboolean ignore_heap_events;
1452 gc_roots (MonoProfiler *prof, MonoObject *const *objects, const MonoProfilerGCRootType *root_types, const uintptr_t *extra_info, uint64_t num)
1454 if (ignore_heap_events)
1457 ENTER_LOG (&heap_roots_ctr, logbuffer,
1458 EVENT_SIZE /* event */ +
1459 LEB128_SIZE /* num */ +
1460 LEB128_SIZE /* collections */ +
1462 LEB128_SIZE /* object */ +
1463 LEB128_SIZE /* root type */ +
1464 LEB128_SIZE /* extra info */
1468 emit_event (logbuffer, TYPE_HEAP_ROOT | TYPE_HEAP);
1469 emit_value (logbuffer, num);
1470 emit_value (logbuffer, mono_gc_collection_count (mono_gc_max_generation ()));
1472 for (int i = 0; i < num; ++i) {
1473 emit_obj (logbuffer, objects [i]);
1474 emit_byte (logbuffer, root_types [i]);
1475 emit_value (logbuffer, extra_info [i]);
1478 EXIT_LOG_EXPLICIT (DO_SEND);
1483 trigger_on_demand_heapshot (void)
1485 if (heapshot_requested)
1486 mono_gc_collect (mono_gc_max_generation ());
1489 #define ALL_GC_EVENTS_MASK (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_EVENTS | PROFLOG_HEAPSHOT_FEATURE)
1492 gc_event (MonoProfiler *profiler, MonoProfilerGCEvent ev, uint32_t generation)
1494 if (ev == MONO_GC_EVENT_START) {
1495 uint64_t now = current_time ();
1497 if (hs_mode_ms && (now - last_hs_time) / 1000 * 1000 >= hs_mode_ms)
1498 do_heap_walk = TRUE;
1499 else if (hs_mode_gc && !(gc_count % hs_mode_gc))
1500 do_heap_walk = TRUE;
1501 else if (hs_mode_ondemand)
1502 do_heap_walk = heapshot_requested;
1503 else if (!hs_mode_ms && !hs_mode_gc && generation == mono_gc_max_generation ())
1504 do_heap_walk = TRUE;
1506 //If using heapshot, ignore events for collections we don't care
1507 if (ENABLED (PROFLOG_HEAPSHOT_FEATURE)) {
1508 // Ignore events generated during the collection itself (IE GC ROOTS)
1509 ignore_heap_events = !do_heap_walk;
1514 if (ENABLED (PROFLOG_GC_EVENTS)) {
1515 ENTER_LOG (&gc_events_ctr, logbuffer,
1516 EVENT_SIZE /* event */ +
1517 BYTE_SIZE /* gc event */ +
1518 BYTE_SIZE /* generation */
1521 emit_event (logbuffer, TYPE_GC_EVENT | TYPE_GC);
1522 emit_byte (logbuffer, ev);
1523 emit_byte (logbuffer, generation);
1525 EXIT_LOG_EXPLICIT (NO_SEND);
1529 case MONO_GC_EVENT_START:
1530 if (generation == mono_gc_max_generation ())
1534 case MONO_GC_EVENT_PRE_STOP_WORLD_LOCKED:
1536 * Ensure that no thread can be in the middle of writing to
1537 * a buffer when the world stops...
1539 buffer_lock_excl ();
1541 case MONO_GC_EVENT_POST_STOP_WORLD:
1543 * ... So that we now have a consistent view of all buffers.
1544 * This allows us to flush them. We need to do this because
1545 * they may contain object allocation events that need to be
1546 * committed to the log file before any object move events
1547 * that will be produced during this GC.
1549 if (ENABLED (ALL_GC_EVENTS_MASK))
1550 sync_point (SYNC_POINT_WORLD_STOP);
1553 * All heap events are surrounded by a HEAP_START and a HEAP_ENV event.
1554 * Right now, that's the case for GC Moves, GC Roots or heapshots.
1556 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1557 ENTER_LOG (&heap_starts_ctr, logbuffer,
1558 EVENT_SIZE /* event */
1561 emit_event (logbuffer, TYPE_HEAP_START | TYPE_HEAP);
1563 EXIT_LOG_EXPLICIT (DO_SEND);
1567 case MONO_GC_EVENT_PRE_START_WORLD:
1568 if (do_heap_shot && do_heap_walk)
1569 mono_gc_walk_heap (0, gc_reference, NULL);
1571 /* Matching HEAP_END to the HEAP_START from above */
1572 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1573 ENTER_LOG (&heap_ends_ctr, logbuffer,
1574 EVENT_SIZE /* event */
1577 emit_event (logbuffer, TYPE_HEAP_END | TYPE_HEAP);
1579 EXIT_LOG_EXPLICIT (DO_SEND);
1582 if (do_heap_shot && do_heap_walk) {
1583 do_heap_walk = FALSE;
1584 heapshot_requested = 0;
1585 last_hs_time = current_time ();
1589 * Similarly, we must now make sure that any object moves
1590 * written to the GC thread's buffer are flushed. Otherwise,
1591 * object allocation events for certain addresses could come
1592 * after the move events that made those addresses available.
1594 if (ENABLED (ALL_GC_EVENTS_MASK))
1595 sync_point_mark (SYNC_POINT_WORLD_START);
1597 case MONO_GC_EVENT_POST_START_WORLD_UNLOCKED:
1599 * Finally, it is safe to allow other threads to write to
1600 * their buffers again.
1602 buffer_unlock_excl ();
1610 gc_resize (MonoProfiler *profiler, uintptr_t new_size)
1612 ENTER_LOG (&gc_resizes_ctr, logbuffer,
1613 EVENT_SIZE /* event */ +
1614 LEB128_SIZE /* new size */
1617 emit_event (logbuffer, TYPE_GC_RESIZE | TYPE_GC);
1618 emit_value (logbuffer, new_size);
1620 EXIT_LOG_EXPLICIT (DO_SEND);
1625 MonoMethod* methods [MAX_FRAMES];
1626 int32_t il_offsets [MAX_FRAMES];
1627 int32_t native_offsets [MAX_FRAMES];
1630 static int num_frames = MAX_FRAMES;
1633 walk_stack (MonoMethod *method, int32_t native_offset, int32_t il_offset, mono_bool managed, void* data)
1635 FrameData *frame = (FrameData *)data;
1636 if (method && frame->count < num_frames) {
1637 frame->il_offsets [frame->count] = il_offset;
1638 frame->native_offsets [frame->count] = native_offset;
1639 frame->methods [frame->count++] = method;
1640 //printf ("In %d %s at %d (native: %d)\n", frame->count, mono_method_get_name (method), il_offset, native_offset);
1642 return frame->count == num_frames;
1646 * a note about stack walks: they can cause more profiler events to fire,
1647 * so we need to make sure they don't happen after we started emitting an
1648 * event, hence the collect_bt/emit_bt split.
1651 collect_bt (FrameData *data)
1654 mono_stack_walk_no_il (walk_stack, data);
1658 emit_bt (MonoProfiler *prof, LogBuffer *logbuffer, FrameData *data)
1660 if (data->count > num_frames)
1661 printf ("bad num frames: %d\n", data->count);
1663 emit_value (logbuffer, data->count);
1666 emit_method (logbuffer, data->methods [--data->count]);
1670 gc_alloc (MonoProfiler *prof, MonoObject *obj)
1672 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_ALLOC_BT : 0;
1674 uintptr_t len = mono_object_get_size (obj);
1675 /* account for object alignment in the heap */
1682 ENTER_LOG (&gc_allocs_ctr, logbuffer,
1683 EVENT_SIZE /* event */ +
1684 LEB128_SIZE /* klass */ +
1685 LEB128_SIZE /* obj */ +
1686 LEB128_SIZE /* size */ +
1688 LEB128_SIZE /* count */ +
1690 LEB128_SIZE /* method */
1695 emit_event (logbuffer, do_bt | TYPE_ALLOC);
1696 emit_ptr (logbuffer, mono_object_get_class (obj));
1697 emit_obj (logbuffer, obj);
1698 emit_value (logbuffer, len);
1701 emit_bt (prof, logbuffer, &data);
1707 gc_moves (MonoProfiler *prof, MonoObject *const *objects, uint64_t num)
1709 ENTER_LOG (&gc_moves_ctr, logbuffer,
1710 EVENT_SIZE /* event */ +
1711 LEB128_SIZE /* num */ +
1713 LEB128_SIZE /* object */
1717 emit_event (logbuffer, TYPE_GC_MOVE | TYPE_GC);
1718 emit_value (logbuffer, num);
1720 for (int i = 0; i < num; ++i)
1721 emit_obj (logbuffer, objects [i]);
1723 EXIT_LOG_EXPLICIT (DO_SEND);
1727 gc_handle (MonoProfiler *prof, int op, MonoGCHandleType type, uint32_t handle, MonoObject *obj)
1729 int do_bt = nocalls && InterlockedRead (&runtime_inited) && !notraces;
1735 gint32 *ctr = op == MONO_PROFILER_GC_HANDLE_CREATED ? &gc_handle_creations_ctr : &gc_handle_deletions_ctr;
1737 ENTER_LOG (ctr, logbuffer,
1738 EVENT_SIZE /* event */ +
1739 LEB128_SIZE /* type */ +
1740 LEB128_SIZE /* handle */ +
1741 (op == MONO_PROFILER_GC_HANDLE_CREATED ? (
1742 LEB128_SIZE /* obj */
1745 LEB128_SIZE /* count */ +
1747 LEB128_SIZE /* method */
1752 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1753 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_CREATED_BT : TYPE_GC_HANDLE_CREATED) | TYPE_GC);
1754 else if (op == MONO_PROFILER_GC_HANDLE_DESTROYED)
1755 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_DESTROYED_BT : TYPE_GC_HANDLE_DESTROYED) | TYPE_GC);
1757 g_assert_not_reached ();
1759 emit_value (logbuffer, type);
1760 emit_value (logbuffer, handle);
1762 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1763 emit_obj (logbuffer, obj);
1766 emit_bt (prof, logbuffer, &data);
1772 gc_handle_created (MonoProfiler *prof, uint32_t handle, MonoGCHandleType type, MonoObject *obj)
1774 gc_handle (prof, MONO_PROFILER_GC_HANDLE_CREATED, type, handle, obj);
1778 gc_handle_deleted (MonoProfiler *prof, uint32_t handle, MonoGCHandleType type)
1780 gc_handle (prof, MONO_PROFILER_GC_HANDLE_DESTROYED, type, handle, NULL);
1784 finalize_begin (MonoProfiler *prof)
1786 ENTER_LOG (&finalize_begins_ctr, buf,
1787 EVENT_SIZE /* event */
1790 emit_event (buf, TYPE_GC_FINALIZE_START | TYPE_GC);
1796 finalize_end (MonoProfiler *prof)
1798 trigger_on_demand_heapshot ();
1799 if (ENABLED (PROFLOG_FINALIZATION_EVENTS)) {
1800 ENTER_LOG (&finalize_ends_ctr, buf,
1801 EVENT_SIZE /* event */
1804 emit_event (buf, TYPE_GC_FINALIZE_END | TYPE_GC);
1811 finalize_object_begin (MonoProfiler *prof, MonoObject *obj)
1813 ENTER_LOG (&finalize_object_begins_ctr, buf,
1814 EVENT_SIZE /* event */ +
1815 LEB128_SIZE /* obj */
1818 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_START | TYPE_GC);
1819 emit_obj (buf, obj);
1825 finalize_object_end (MonoProfiler *prof, MonoObject *obj)
1827 ENTER_LOG (&finalize_object_ends_ctr, buf,
1828 EVENT_SIZE /* event */ +
1829 LEB128_SIZE /* obj */
1832 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_END | TYPE_GC);
1833 emit_obj (buf, obj);
1839 push_nesting (char *p, MonoClass *klass)
1844 nesting = mono_class_get_nesting_type (klass);
1846 p = push_nesting (p, nesting);
1850 name = mono_class_get_name (klass);
1851 nspace = mono_class_get_namespace (klass);
1854 p += strlen (nspace);
1864 type_name (MonoClass *klass)
1868 push_nesting (buf, klass);
1869 p = (char *) g_malloc (strlen (buf) + 1);
1875 image_loaded (MonoProfiler *prof, MonoImage *image)
1877 const char *name = mono_image_get_filename (image);
1878 int nlen = strlen (name) + 1;
1880 ENTER_LOG (&image_loads_ctr, logbuffer,
1881 EVENT_SIZE /* event */ +
1882 BYTE_SIZE /* type */ +
1883 LEB128_SIZE /* image */ +
1887 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1888 emit_byte (logbuffer, TYPE_IMAGE);
1889 emit_ptr (logbuffer, image);
1890 memcpy (logbuffer->cursor, name, nlen);
1891 logbuffer->cursor += nlen;
1897 image_unloaded (MonoProfiler *prof, MonoImage *image)
1899 const char *name = mono_image_get_filename (image);
1900 int nlen = strlen (name) + 1;
1902 ENTER_LOG (&image_unloads_ctr, logbuffer,
1903 EVENT_SIZE /* event */ +
1904 BYTE_SIZE /* type */ +
1905 LEB128_SIZE /* image */ +
1909 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1910 emit_byte (logbuffer, TYPE_IMAGE);
1911 emit_ptr (logbuffer, image);
1912 memcpy (logbuffer->cursor, name, nlen);
1913 logbuffer->cursor += nlen;
1919 assembly_loaded (MonoProfiler *prof, MonoAssembly *assembly)
1921 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1922 int nlen = strlen (name) + 1;
1923 MonoImage *image = mono_assembly_get_image (assembly);
1925 ENTER_LOG (&assembly_loads_ctr, logbuffer,
1926 EVENT_SIZE /* event */ +
1927 BYTE_SIZE /* type */ +
1928 LEB128_SIZE /* assembly */ +
1929 LEB128_SIZE /* image */ +
1933 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1934 emit_byte (logbuffer, TYPE_ASSEMBLY);
1935 emit_ptr (logbuffer, assembly);
1936 emit_ptr (logbuffer, image);
1937 memcpy (logbuffer->cursor, name, nlen);
1938 logbuffer->cursor += nlen;
1946 assembly_unloaded (MonoProfiler *prof, MonoAssembly *assembly)
1948 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1949 int nlen = strlen (name) + 1;
1950 MonoImage *image = mono_assembly_get_image (assembly);
1952 ENTER_LOG (&assembly_unloads_ctr, logbuffer,
1953 EVENT_SIZE /* event */ +
1954 BYTE_SIZE /* type */ +
1955 LEB128_SIZE /* assembly */ +
1956 LEB128_SIZE /* image */ +
1960 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1961 emit_byte (logbuffer, TYPE_ASSEMBLY);
1962 emit_ptr (logbuffer, assembly);
1963 emit_ptr (logbuffer, image);
1964 memcpy (logbuffer->cursor, name, nlen);
1965 logbuffer->cursor += nlen;
1973 class_loaded (MonoProfiler *prof, MonoClass *klass)
1977 if (InterlockedRead (&runtime_inited))
1978 name = mono_type_get_name (mono_class_get_type (klass));
1980 name = type_name (klass);
1982 int nlen = strlen (name) + 1;
1983 MonoImage *image = mono_class_get_image (klass);
1985 ENTER_LOG (&class_loads_ctr, logbuffer,
1986 EVENT_SIZE /* event */ +
1987 BYTE_SIZE /* type */ +
1988 LEB128_SIZE /* klass */ +
1989 LEB128_SIZE /* image */ +
1993 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1994 emit_byte (logbuffer, TYPE_CLASS);
1995 emit_ptr (logbuffer, klass);
1996 emit_ptr (logbuffer, image);
1997 memcpy (logbuffer->cursor, name, nlen);
1998 logbuffer->cursor += nlen;
2009 method_enter (MonoProfiler *prof, MonoMethod *method)
2011 if (get_thread ()->call_depth++ <= max_call_depth) {
2012 ENTER_LOG (&method_entries_ctr, logbuffer,
2013 EVENT_SIZE /* event */ +
2014 LEB128_SIZE /* method */
2017 emit_event (logbuffer, TYPE_ENTER | TYPE_METHOD);
2018 emit_method (logbuffer, method);
2025 method_leave (MonoProfiler *prof, MonoMethod *method)
2027 if (--get_thread ()->call_depth <= max_call_depth) {
2028 ENTER_LOG (&method_exits_ctr, logbuffer,
2029 EVENT_SIZE /* event */ +
2030 LEB128_SIZE /* method */
2033 emit_event (logbuffer, TYPE_LEAVE | TYPE_METHOD);
2034 emit_method (logbuffer, method);
2041 method_exc_leave (MonoProfiler *prof, MonoMethod *method, MonoObject *exc)
2043 if (!nocalls && --get_thread ()->call_depth <= max_call_depth) {
2044 ENTER_LOG (&method_exception_exits_ctr, logbuffer,
2045 EVENT_SIZE /* event */ +
2046 LEB128_SIZE /* method */
2049 emit_event (logbuffer, TYPE_EXC_LEAVE | TYPE_METHOD);
2050 emit_method (logbuffer, method);
2056 static MonoProfilerCallInstrumentationFlags
2057 method_filter (MonoProfiler *prof, MonoMethod *method)
2059 return MONO_PROFILER_CALL_INSTRUMENTATION_PROLOGUE | MONO_PROFILER_CALL_INSTRUMENTATION_EPILOGUE;
2063 method_jitted (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *ji)
2067 register_method_local (method, ji);
2073 code_buffer_new (MonoProfiler *prof, const mono_byte *buffer, uint64_t size, MonoProfilerCodeBufferType type, const void *data)
2078 if (type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE) {
2079 name = (const char *) data;
2080 nlen = strlen (name) + 1;
2086 ENTER_LOG (&code_buffers_ctr, logbuffer,
2087 EVENT_SIZE /* event */ +
2088 BYTE_SIZE /* type */ +
2089 LEB128_SIZE /* buffer */ +
2090 LEB128_SIZE /* size */ +
2096 emit_event (logbuffer, TYPE_JITHELPER | TYPE_RUNTIME);
2097 emit_byte (logbuffer, type);
2098 emit_ptr (logbuffer, buffer);
2099 emit_value (logbuffer, size);
2102 memcpy (logbuffer->cursor, name, nlen);
2103 logbuffer->cursor += nlen;
2110 throw_exc (MonoProfiler *prof, MonoObject *object)
2112 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_THROW_BT : 0;
2118 ENTER_LOG (&exception_throws_ctr, logbuffer,
2119 EVENT_SIZE /* event */ +
2120 LEB128_SIZE /* object */ +
2122 LEB128_SIZE /* count */ +
2124 LEB128_SIZE /* method */
2129 emit_event (logbuffer, do_bt | TYPE_EXCEPTION);
2130 emit_obj (logbuffer, object);
2133 emit_bt (prof, logbuffer, &data);
2139 clause_exc (MonoProfiler *prof, MonoMethod *method, uint32_t clause_num, MonoExceptionEnum clause_type, MonoObject *exc)
2141 ENTER_LOG (&exception_clauses_ctr, logbuffer,
2142 EVENT_SIZE /* event */ +
2143 BYTE_SIZE /* clause type */ +
2144 LEB128_SIZE /* clause num */ +
2145 LEB128_SIZE /* method */
2148 emit_event (logbuffer, TYPE_EXCEPTION | TYPE_CLAUSE);
2149 emit_byte (logbuffer, clause_type);
2150 emit_value (logbuffer, clause_num);
2151 emit_method (logbuffer, method);
2152 emit_obj (logbuffer, exc);
2158 monitor_event (MonoProfiler *profiler, MonoObject *object, MonoProfilerMonitorEvent ev)
2160 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_MONITOR_BT : 0;
2166 ENTER_LOG (&monitor_events_ctr, logbuffer,
2167 EVENT_SIZE /* event */ +
2168 BYTE_SIZE /* ev */ +
2169 LEB128_SIZE /* object */ +
2171 LEB128_SIZE /* count */ +
2173 LEB128_SIZE /* method */
2178 emit_event (logbuffer, do_bt | TYPE_MONITOR);
2179 emit_byte (logbuffer, ev);
2180 emit_obj (logbuffer, object);
2183 emit_bt (profiler, logbuffer, &data);
2189 monitor_contention (MonoProfiler *prof, MonoObject *object)
2191 monitor_event (prof, object, MONO_PROFILER_MONITOR_CONTENTION);
2195 monitor_acquired (MonoProfiler *prof, MonoObject *object)
2197 monitor_event (prof, object, MONO_PROFILER_MONITOR_DONE);
2201 monitor_failed (MonoProfiler *prof, MonoObject *object)
2203 monitor_event (prof, object, MONO_PROFILER_MONITOR_FAIL);
2207 thread_start (MonoProfiler *prof, uintptr_t tid)
2209 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2210 ENTER_LOG (&thread_starts_ctr, logbuffer,
2211 EVENT_SIZE /* event */ +
2212 BYTE_SIZE /* type */ +
2213 LEB128_SIZE /* tid */
2216 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2217 emit_byte (logbuffer, TYPE_THREAD);
2218 emit_ptr (logbuffer, (void*) tid);
2225 thread_end (MonoProfiler *prof, uintptr_t tid)
2227 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2228 ENTER_LOG (&thread_ends_ctr, logbuffer,
2229 EVENT_SIZE /* event */ +
2230 BYTE_SIZE /* type */ +
2231 LEB128_SIZE /* tid */
2234 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2235 emit_byte (logbuffer, TYPE_THREAD);
2236 emit_ptr (logbuffer, (void*) tid);
2238 EXIT_LOG_EXPLICIT (NO_SEND);
2241 MonoProfilerThread *thread = get_thread ();
2243 thread->ended = TRUE;
2244 remove_thread (thread);
2246 PROF_TLS_SET (NULL);
2250 thread_name (MonoProfiler *prof, uintptr_t tid, const char *name)
2252 int len = strlen (name) + 1;
2254 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2255 ENTER_LOG (&thread_names_ctr, logbuffer,
2256 EVENT_SIZE /* event */ +
2257 BYTE_SIZE /* type */ +
2258 LEB128_SIZE /* tid */ +
2262 emit_event (logbuffer, TYPE_METADATA);
2263 emit_byte (logbuffer, TYPE_THREAD);
2264 emit_ptr (logbuffer, (void*)tid);
2265 memcpy (logbuffer->cursor, name, len);
2266 logbuffer->cursor += len;
2273 domain_loaded (MonoProfiler *prof, MonoDomain *domain)
2275 ENTER_LOG (&domain_loads_ctr, logbuffer,
2276 EVENT_SIZE /* event */ +
2277 BYTE_SIZE /* type */ +
2278 LEB128_SIZE /* domain id */
2281 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2282 emit_byte (logbuffer, TYPE_DOMAIN);
2283 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2289 domain_unloaded (MonoProfiler *prof, MonoDomain *domain)
2291 ENTER_LOG (&domain_unloads_ctr, logbuffer,
2292 EVENT_SIZE /* event */ +
2293 BYTE_SIZE /* type */ +
2294 LEB128_SIZE /* domain id */
2297 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2298 emit_byte (logbuffer, TYPE_DOMAIN);
2299 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2305 domain_name (MonoProfiler *prof, MonoDomain *domain, const char *name)
2307 int nlen = strlen (name) + 1;
2309 ENTER_LOG (&domain_names_ctr, logbuffer,
2310 EVENT_SIZE /* event */ +
2311 BYTE_SIZE /* type */ +
2312 LEB128_SIZE /* domain id */ +
2316 emit_event (logbuffer, TYPE_METADATA);
2317 emit_byte (logbuffer, TYPE_DOMAIN);
2318 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2319 memcpy (logbuffer->cursor, name, nlen);
2320 logbuffer->cursor += nlen;
2326 context_loaded (MonoProfiler *prof, MonoAppContext *context)
2328 ENTER_LOG (&context_loads_ctr, logbuffer,
2329 EVENT_SIZE /* event */ +
2330 BYTE_SIZE /* type */ +
2331 LEB128_SIZE /* context id */ +
2332 LEB128_SIZE /* domain id */
2335 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2336 emit_byte (logbuffer, TYPE_CONTEXT);
2337 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2338 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2344 context_unloaded (MonoProfiler *prof, MonoAppContext *context)
2346 ENTER_LOG (&context_unloads_ctr, logbuffer,
2347 EVENT_SIZE /* event */ +
2348 BYTE_SIZE /* type */ +
2349 LEB128_SIZE /* context id */ +
2350 LEB128_SIZE /* domain id */
2353 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2354 emit_byte (logbuffer, TYPE_CONTEXT);
2355 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2356 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2369 MonoLockFreeQueueNode node;
2375 AsyncFrameInfo frames [MONO_ZERO_LEN_ARRAY];
2379 async_walk_stack (MonoMethod *method, MonoDomain *domain, void *base_address, int offset, void *data)
2381 SampleHit *sample = (SampleHit *) data;
2383 if (sample->count < num_frames) {
2384 int i = sample->count;
2386 sample->frames [i].method = method;
2387 sample->frames [i].domain = domain;
2388 sample->frames [i].base_address = base_address;
2389 sample->frames [i].offset = offset;
2394 return sample->count == num_frames;
2397 #define SAMPLE_SLOT_SIZE(FRAMES) (sizeof (SampleHit) + sizeof (AsyncFrameInfo) * (FRAMES - MONO_ZERO_LEN_ARRAY))
2398 #define SAMPLE_BLOCK_SIZE (mono_pagesize ())
2401 enqueue_sample_hit (gpointer p)
2403 SampleHit *sample = p;
2405 mono_lock_free_queue_node_unpoison (&sample->node);
2406 mono_lock_free_queue_enqueue (&sample->prof->dumper_queue, &sample->node);
2407 mono_os_sem_post (&sample->prof->dumper_queue_sem);
2411 mono_sample_hit (MonoProfiler *profiler, const mono_byte *ip, const void *context)
2414 * Please note: We rely on the runtime loading the profiler with
2415 * MONO_DL_EAGER (RTLD_NOW) so that references to runtime functions within
2416 * this function (and its siblings) are resolved when the profiler is
2417 * loaded. Otherwise, we would potentially invoke the dynamic linker when
2418 * invoking runtime functions, which is not async-signal-safe.
2421 if (InterlockedRead (&in_shutdown))
2424 SampleHit *sample = (SampleHit *) mono_lock_free_queue_dequeue (&profiler->sample_reuse_queue);
2428 * If we're out of reusable sample events and we're not allowed to
2429 * allocate more, we have no choice but to drop the event.
2431 if (InterlockedRead (&sample_allocations_ctr) >= max_allocated_sample_hits)
2434 sample = mono_lock_free_alloc (&profiler->sample_allocator);
2435 sample->prof = profiler;
2436 mono_lock_free_queue_node_init (&sample->node, TRUE);
2438 InterlockedIncrement (&sample_allocations_ctr);
2442 mono_stack_walk_async_safe (&async_walk_stack, (void *) context, sample);
2444 sample->time = current_time ();
2445 sample->tid = thread_id ();
2448 mono_thread_hazardous_try_free (sample, enqueue_sample_hit);
2451 static uintptr_t *code_pages = 0;
2452 static int num_code_pages = 0;
2453 static int size_code_pages = 0;
2454 #define CPAGE_SHIFT (9)
2455 #define CPAGE_SIZE (1 << CPAGE_SHIFT)
2456 #define CPAGE_MASK (~(CPAGE_SIZE - 1))
2457 #define CPAGE_ADDR(p) ((p) & CPAGE_MASK)
2460 add_code_page (uintptr_t *hash, uintptr_t hsize, uintptr_t page)
2463 uintptr_t start_pos;
2464 start_pos = (page >> CPAGE_SHIFT) % hsize;
2467 if (hash [i] && CPAGE_ADDR (hash [i]) == CPAGE_ADDR (page)) {
2469 } else if (!hash [i]) {
2476 } while (i != start_pos);
2477 /* should not happen */
2478 printf ("failed code page store\n");
2483 add_code_pointer (uintptr_t ip)
2486 if (num_code_pages * 2 >= size_code_pages) {
2488 uintptr_t old_size = size_code_pages;
2489 size_code_pages *= 2;
2490 if (size_code_pages == 0)
2491 size_code_pages = 16;
2492 n = (uintptr_t *) g_calloc (sizeof (uintptr_t) * size_code_pages, 1);
2493 for (i = 0; i < old_size; ++i) {
2495 add_code_page (n, size_code_pages, code_pages [i]);
2498 g_free (code_pages);
2501 num_code_pages += add_code_page (code_pages, size_code_pages, ip & CPAGE_MASK);
2504 /* ELF code crashes on some systems. */
2505 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2508 dump_ubin (MonoProfiler *prof, const char *filename, uintptr_t load_addr, uint64_t offset, uintptr_t size)
2510 int len = strlen (filename) + 1;
2512 ENTER_LOG (&sample_ubins_ctr, logbuffer,
2513 EVENT_SIZE /* event */ +
2514 LEB128_SIZE /* load address */ +
2515 LEB128_SIZE /* offset */ +
2516 LEB128_SIZE /* size */ +
2517 nlen /* file name */
2520 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_UBIN);
2521 emit_ptr (logbuffer, load_addr);
2522 emit_uvalue (logbuffer, offset);
2523 emit_uvalue (logbuffer, size);
2524 memcpy (logbuffer->cursor, filename, len);
2525 logbuffer->cursor += len;
2527 EXIT_LOG_EXPLICIT (DO_SEND);
2532 dump_usym (MonoProfiler *prof, const char *name, uintptr_t value, uintptr_t size)
2534 int len = strlen (name) + 1;
2536 ENTER_LOG (&sample_usyms_ctr, logbuffer,
2537 EVENT_SIZE /* event */ +
2538 LEB128_SIZE /* value */ +
2539 LEB128_SIZE /* size */ +
2543 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_USYM);
2544 emit_ptr (logbuffer, (void*)value);
2545 emit_value (logbuffer, size);
2546 memcpy (logbuffer->cursor, name, len);
2547 logbuffer->cursor += len;
2549 EXIT_LOG_EXPLICIT (DO_SEND);
2552 /* ELF code crashes on some systems. */
2553 //#if defined(ELFMAG0)
2556 #if SIZEOF_VOID_P == 4
2557 #define ELF_WSIZE 32
2559 #define ELF_WSIZE 64
2562 #define ElfW(type) _ElfW (Elf, ELF_WSIZE, type)
2563 #define _ElfW(e,w,t) _ElfW_1 (e, w, _##t)
2564 #define _ElfW_1(e,w,t) e##w##t
2568 dump_elf_symbols (MonoProfiler *prof, ElfW(Sym) *symbols, int num_symbols, const char *strtab, void *load_addr)
2571 for (i = 0; i < num_symbols; ++i) {
2573 sym = strtab + symbols [i].st_name;
2574 if (!symbols [i].st_name || !symbols [i].st_size || (symbols [i].st_info & 0xf) != STT_FUNC)
2576 //printf ("symbol %s at %d\n", sym, symbols [i].st_value);
2577 dump_usym (sym, (uintptr_t)load_addr + symbols [i].st_value, symbols [i].st_size);
2582 read_elf_symbols (MonoProfiler *prof, const char *filename, void *load_addr)
2589 ElfW(Shdr) *sheader;
2590 ElfW(Shdr) *shstrtabh;
2591 ElfW(Shdr) *symtabh = NULL;
2592 ElfW(Shdr) *strtabh = NULL;
2593 ElfW(Sym) *symbols = NULL;
2597 fd = open (filename, O_RDONLY);
2600 if (fstat (fd, &statb) != 0) {
2604 file_size = statb.st_size;
2605 data = mmap (NULL, file_size, PROT_READ, MAP_PRIVATE, fd, 0);
2607 if (data == MAP_FAILED)
2610 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2611 header->e_ident [EI_MAG1] != ELFMAG1 ||
2612 header->e_ident [EI_MAG2] != ELFMAG2 ||
2613 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2614 munmap (data, file_size);
2617 sheader = (void*)((char*)data + header->e_shoff);
2618 shstrtabh = (void*)((char*)sheader + (header->e_shentsize * header->e_shstrndx));
2619 strtab = (const char*)data + shstrtabh->sh_offset;
2620 for (i = 0; i < header->e_shnum; ++i) {
2621 //printf ("section header: %d\n", sheader->sh_type);
2622 if (sheader->sh_type == SHT_SYMTAB) {
2624 strtabh = (void*)((char*)data + header->e_shoff + sheader->sh_link * header->e_shentsize);
2625 /*printf ("symtab section header: %d, .strstr: %d\n", i, sheader->sh_link);*/
2628 sheader = (void*)((char*)sheader + header->e_shentsize);
2630 if (!symtabh || !strtabh) {
2631 munmap (data, file_size);
2634 strtab = (const char*)data + strtabh->sh_offset;
2635 num_symbols = symtabh->sh_size / symtabh->sh_entsize;
2636 symbols = (void*)((char*)data + symtabh->sh_offset);
2637 dump_elf_symbols (symbols, num_symbols, strtab, load_addr);
2638 munmap (data, file_size);
2643 /* ELF code crashes on some systems. */
2644 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2647 elf_dl_callback (struct dl_phdr_info *info, size_t size, void *data)
2649 MonoProfiler *prof = data;
2651 const char *filename;
2653 char *a = (void*)info->dlpi_addr;
2655 ElfW(Dyn) *dyn = NULL;
2656 ElfW(Sym) *symtab = NULL;
2657 ElfW(Word) *hash_table = NULL;
2658 ElfW(Ehdr) *header = NULL;
2659 const char* strtab = NULL;
2660 for (obj = prof->binary_objects; obj; obj = obj->next) {
2664 filename = info->dlpi_name;
2667 if (!info->dlpi_addr && !filename [0]) {
2668 int l = readlink ("/proc/self/exe", buf, sizeof (buf) - 1);
2674 obj = g_calloc (sizeof (BinaryObject), 1);
2675 obj->addr = (void*)info->dlpi_addr;
2676 obj->name = pstrdup (filename);
2677 obj->next = prof->binary_objects;
2678 prof->binary_objects = obj;
2679 //printf ("loaded file: %s at %p, segments: %d\n", filename, (void*)info->dlpi_addr, info->dlpi_phnum);
2681 for (i = 0; i < info->dlpi_phnum; ++i) {
2682 //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);
2683 if (info->dlpi_phdr[i].p_type == PT_LOAD && !header) {
2684 header = (ElfW(Ehdr)*)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2685 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2686 header->e_ident [EI_MAG1] != ELFMAG1 ||
2687 header->e_ident [EI_MAG2] != ELFMAG2 ||
2688 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2691 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);
2692 } else if (info->dlpi_phdr[i].p_type == PT_DYNAMIC) {
2693 dyn = (ElfW(Dyn) *)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2696 if (read_elf_symbols (prof, filename, (void*)info->dlpi_addr))
2698 if (!info->dlpi_name || !info->dlpi_name[0])
2702 for (i = 0; dyn [i].d_tag != DT_NULL; ++i) {
2703 if (dyn [i].d_tag == DT_SYMTAB) {
2704 if (symtab && do_debug)
2705 printf ("multiple symtabs: %d\n", i);
2706 symtab = (ElfW(Sym) *)(a + dyn [i].d_un.d_ptr);
2707 } else if (dyn [i].d_tag == DT_HASH) {
2708 hash_table = (ElfW(Word) *)(a + dyn [i].d_un.d_ptr);
2709 } else if (dyn [i].d_tag == DT_STRTAB) {
2710 strtab = (const char*)(a + dyn [i].d_un.d_ptr);
2715 num_sym = hash_table [1];
2716 dump_elf_symbols (prof, symtab, num_sym, strtab, (void*)info->dlpi_addr);
2721 load_binaries (MonoProfiler *prof)
2723 dl_iterate_phdr (elf_dl_callback, prof);
2728 load_binaries (MonoProfiler *prof)
2735 symbol_for (uintptr_t code)
2738 void *ip = (void*)code;
2740 if (dladdr (ip, &di)) {
2742 return di.dli_sname;
2745 names = backtrace_symbols (&ip, 1);
2747 const char* p = names [0];
2758 dump_unmanaged_coderefs (MonoProfiler *prof)
2761 const char* last_symbol;
2762 uintptr_t addr, page_end;
2764 if (load_binaries (prof))
2766 for (i = 0; i < size_code_pages; ++i) {
2768 if (!code_pages [i] || code_pages [i] & 1)
2771 addr = CPAGE_ADDR (code_pages [i]);
2772 page_end = addr + CPAGE_SIZE;
2773 code_pages [i] |= 1;
2774 /* we dump the symbols for the whole page */
2775 for (; addr < page_end; addr += 16) {
2776 sym = symbol_for (addr);
2777 if (sym && sym == last_symbol)
2782 dump_usym (prof, sym, addr, 0); /* let's not guess the size */
2783 //printf ("found symbol at %p: %s\n", (void*)addr, sym);
2788 typedef struct MonoCounterAgent {
2789 MonoCounter *counter;
2790 // MonoCounterAgent specific data :
2795 struct MonoCounterAgent *next;
2798 static MonoCounterAgent* counters;
2799 static int counters_index = 1;
2800 static mono_mutex_t counters_mutex;
2803 counters_add_agent (MonoCounter *counter)
2805 if (InterlockedRead (&in_shutdown))
2808 MonoCounterAgent *agent, *item;
2810 mono_os_mutex_lock (&counters_mutex);
2812 for (agent = counters; agent; agent = agent->next) {
2813 if (agent->counter == counter) {
2814 agent->value_size = 0;
2816 g_free (agent->value);
2817 agent->value = NULL;
2823 agent = (MonoCounterAgent *) g_malloc (sizeof (MonoCounterAgent));
2824 agent->counter = counter;
2825 agent->value = NULL;
2826 agent->value_size = 0;
2827 agent->index = counters_index++;
2841 mono_os_mutex_unlock (&counters_mutex);
2845 counters_init_foreach_callback (MonoCounter *counter, gpointer data)
2847 counters_add_agent (counter);
2852 counters_init (MonoProfiler *profiler)
2854 mono_os_mutex_init (&counters_mutex);
2856 mono_counters_on_register (&counters_add_agent);
2857 mono_counters_foreach (counters_init_foreach_callback, NULL);
2861 counters_emit (MonoProfiler *profiler)
2863 MonoCounterAgent *agent;
2866 EVENT_SIZE /* event */ +
2867 LEB128_SIZE /* len */
2870 mono_os_mutex_lock (&counters_mutex);
2872 for (agent = counters; agent; agent = agent->next) {
2877 LEB128_SIZE /* section */ +
2878 strlen (mono_counter_get_name (agent->counter)) + 1 /* name */ +
2879 BYTE_SIZE /* type */ +
2880 BYTE_SIZE /* unit */ +
2881 BYTE_SIZE /* variance */ +
2882 LEB128_SIZE /* index */
2891 ENTER_LOG (&counter_descriptors_ctr, logbuffer, size);
2893 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
2894 emit_value (logbuffer, len);
2896 for (agent = counters; agent; agent = agent->next) {
2902 name = mono_counter_get_name (agent->counter);
2903 emit_value (logbuffer, mono_counter_get_section (agent->counter));
2904 emit_string (logbuffer, name, strlen (name) + 1);
2905 emit_byte (logbuffer, mono_counter_get_type (agent->counter));
2906 emit_byte (logbuffer, mono_counter_get_unit (agent->counter));
2907 emit_byte (logbuffer, mono_counter_get_variance (agent->counter));
2908 emit_value (logbuffer, agent->index);
2913 EXIT_LOG_EXPLICIT (DO_SEND);
2916 mono_os_mutex_unlock (&counters_mutex);
2920 counters_sample (MonoProfiler *profiler, uint64_t timestamp)
2922 MonoCounterAgent *agent;
2923 MonoCounter *counter;
2929 counters_emit (profiler);
2932 buffer = g_calloc (1, buffer_size);
2934 mono_os_mutex_lock (&counters_mutex);
2937 EVENT_SIZE /* event */
2940 for (agent = counters; agent; agent = agent->next) {
2942 LEB128_SIZE /* index */ +
2943 BYTE_SIZE /* type */ +
2944 mono_counter_get_size (agent->counter) /* value */
2949 LEB128_SIZE /* stop marker */
2952 ENTER_LOG (&counter_samples_ctr, logbuffer, size);
2954 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
2956 for (agent = counters; agent; agent = agent->next) {
2959 counter = agent->counter;
2961 size = mono_counter_get_size (counter);
2963 if (size > buffer_size) {
2965 buffer = g_realloc (buffer, buffer_size);
2968 memset (buffer, 0, buffer_size);
2970 g_assert (mono_counters_sample (counter, buffer, size));
2972 type = mono_counter_get_type (counter);
2974 if (!agent->value) {
2975 agent->value = g_calloc (1, size);
2976 agent->value_size = size;
2978 if (type == MONO_COUNTER_STRING) {
2979 if (strcmp (agent->value, buffer) == 0)
2982 if (agent->value_size == size && memcmp (agent->value, buffer, size) == 0)
2987 emit_uvalue (logbuffer, agent->index);
2988 emit_byte (logbuffer, type);
2990 case MONO_COUNTER_INT:
2991 #if SIZEOF_VOID_P == 4
2992 case MONO_COUNTER_WORD:
2994 emit_svalue (logbuffer, *(int*)buffer - *(int*)agent->value);
2996 case MONO_COUNTER_UINT:
2997 emit_uvalue (logbuffer, *(guint*)buffer - *(guint*)agent->value);
2999 case MONO_COUNTER_TIME_INTERVAL:
3000 case MONO_COUNTER_LONG:
3001 #if SIZEOF_VOID_P == 8
3002 case MONO_COUNTER_WORD:
3004 emit_svalue (logbuffer, *(gint64*)buffer - *(gint64*)agent->value);
3006 case MONO_COUNTER_ULONG:
3007 emit_uvalue (logbuffer, *(guint64*)buffer - *(guint64*)agent->value);
3009 case MONO_COUNTER_DOUBLE:
3010 emit_double (logbuffer, *(double*)buffer);
3012 case MONO_COUNTER_STRING:
3014 emit_byte (logbuffer, 0);
3016 emit_byte (logbuffer, 1);
3017 emit_string (logbuffer, (char*)buffer, size);
3021 g_assert_not_reached ();
3024 if (type == MONO_COUNTER_STRING && size > agent->value_size) {
3025 agent->value = g_realloc (agent->value, size);
3026 agent->value_size = size;
3030 memcpy (agent->value, buffer, size);
3034 emit_value (logbuffer, 0);
3036 EXIT_LOG_EXPLICIT (DO_SEND);
3038 mono_os_mutex_unlock (&counters_mutex);
3041 typedef struct _PerfCounterAgent PerfCounterAgent;
3042 struct _PerfCounterAgent {
3043 PerfCounterAgent *next;
3045 char *category_name;
3054 static PerfCounterAgent *perfcounters = NULL;
3057 perfcounters_emit (MonoProfiler *profiler)
3059 PerfCounterAgent *pcagent;
3062 EVENT_SIZE /* event */ +
3063 LEB128_SIZE /* len */
3066 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3067 if (pcagent->emitted)
3071 LEB128_SIZE /* section */ +
3072 strlen (pcagent->category_name) + 1 /* category name */ +
3073 strlen (pcagent->name) + 1 /* name */ +
3074 BYTE_SIZE /* type */ +
3075 BYTE_SIZE /* unit */ +
3076 BYTE_SIZE /* variance */ +
3077 LEB128_SIZE /* index */
3086 ENTER_LOG (&perfcounter_descriptors_ctr, logbuffer, size);
3088 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
3089 emit_value (logbuffer, len);
3091 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3092 if (pcagent->emitted)
3095 emit_value (logbuffer, MONO_COUNTER_PERFCOUNTERS);
3096 emit_string (logbuffer, pcagent->category_name, strlen (pcagent->category_name) + 1);
3097 emit_string (logbuffer, pcagent->name, strlen (pcagent->name) + 1);
3098 emit_byte (logbuffer, MONO_COUNTER_LONG);
3099 emit_byte (logbuffer, MONO_COUNTER_RAW);
3100 emit_byte (logbuffer, MONO_COUNTER_VARIABLE);
3101 emit_value (logbuffer, pcagent->index);
3103 pcagent->emitted = 1;
3106 EXIT_LOG_EXPLICIT (DO_SEND);
3110 perfcounters_foreach (char *category_name, char *name, unsigned char type, gint64 value, gpointer user_data)
3112 PerfCounterAgent *pcagent;
3114 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3115 if (strcmp (pcagent->category_name, category_name) != 0 || strcmp (pcagent->name, name) != 0)
3117 if (pcagent->value == value)
3120 pcagent->value = value;
3121 pcagent->updated = 1;
3122 pcagent->deleted = 0;
3126 pcagent = g_new0 (PerfCounterAgent, 1);
3127 pcagent->next = perfcounters;
3128 pcagent->index = counters_index++;
3129 pcagent->category_name = g_strdup (category_name);
3130 pcagent->name = g_strdup (name);
3131 pcagent->type = (int) type;
3132 pcagent->value = value;
3133 pcagent->emitted = 0;
3134 pcagent->updated = 1;
3135 pcagent->deleted = 0;
3137 perfcounters = pcagent;
3143 perfcounters_sample (MonoProfiler *profiler, uint64_t timestamp)
3145 PerfCounterAgent *pcagent;
3149 mono_os_mutex_lock (&counters_mutex);
3151 /* mark all perfcounters as deleted, foreach will unmark them as necessary */
3152 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next)
3153 pcagent->deleted = 1;
3155 mono_perfcounter_foreach (perfcounters_foreach, perfcounters);
3157 perfcounters_emit (profiler);
3160 EVENT_SIZE /* event */
3163 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3164 if (pcagent->deleted || !pcagent->updated)
3168 LEB128_SIZE /* index */ +
3169 BYTE_SIZE /* type */ +
3170 LEB128_SIZE /* value */
3180 LEB128_SIZE /* stop marker */
3183 ENTER_LOG (&perfcounter_samples_ctr, logbuffer, size);
3185 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
3187 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3188 if (pcagent->deleted || !pcagent->updated)
3190 emit_uvalue (logbuffer, pcagent->index);
3191 emit_byte (logbuffer, MONO_COUNTER_LONG);
3192 emit_svalue (logbuffer, pcagent->value);
3194 pcagent->updated = 0;
3197 emit_value (logbuffer, 0);
3199 EXIT_LOG_EXPLICIT (DO_SEND);
3202 mono_os_mutex_unlock (&counters_mutex);
3206 counters_and_perfcounters_sample (MonoProfiler *prof)
3208 uint64_t now = current_time ();
3210 counters_sample (prof, now);
3211 perfcounters_sample (prof, now);
3214 #define COVERAGE_DEBUG(x) if (debug_coverage) {x}
3215 static mono_mutex_t coverage_mutex;
3216 static MonoConcurrentHashTable *coverage_methods = NULL;
3217 static MonoConcurrentHashTable *coverage_assemblies = NULL;
3218 static MonoConcurrentHashTable *coverage_classes = NULL;
3220 static MonoConcurrentHashTable *filtered_classes = NULL;
3221 static MonoConcurrentHashTable *image_to_methods = NULL;
3222 static MonoConcurrentHashTable *suppressed_assemblies = NULL;
3223 static gboolean coverage_initialized = FALSE;
3225 static GPtrArray *coverage_data = NULL;
3226 static int previous_offset = 0;
3229 MonoLockFreeQueueNode node;
3242 free_coverage_entry (gpointer data, gpointer userdata)
3244 CoverageEntry *entry = (CoverageEntry *)data;
3245 g_free (entry->filename);
3250 obtain_coverage_for_method (MonoProfiler *prof, const MonoProfilerCoverageData *entry)
3252 int offset = entry->il_offset - previous_offset;
3253 CoverageEntry *e = g_new (CoverageEntry, 1);
3255 previous_offset = entry->il_offset;
3258 e->counter = entry->counter;
3259 e->filename = g_strdup(entry->file_name ? entry->file_name : "");
3260 e->line = entry->line;
3261 e->column = entry->column;
3263 g_ptr_array_add (coverage_data, e);
3267 parse_generic_type_names(char *name)
3269 char *new_name, *ret;
3270 int within_generic_declaration = 0, generic_members = 1;
3272 if (name == NULL || *name == '\0')
3273 return g_strdup ("");
3275 if (!(ret = new_name = (char *) g_calloc (strlen (name) * 4 + 1, sizeof (char))))
3281 within_generic_declaration = 1;
3285 within_generic_declaration = 0;
3287 if (*(name - 1) != '<') {
3289 *new_name++ = '0' + generic_members;
3291 memcpy (new_name, "<>", 8);
3295 generic_members = 0;
3303 if (!within_generic_declaration)
3304 *new_name++ = *name;
3313 static int method_id;
3315 build_method_buffer (gpointer key, gpointer value, gpointer userdata)
3317 MonoMethod *method = (MonoMethod *)value;
3318 MonoProfiler *prof = (MonoProfiler *)userdata;
3322 const char *image_name, *method_name, *sig, *first_filename;
3325 previous_offset = 0;
3326 coverage_data = g_ptr_array_new ();
3328 mono_profiler_get_coverage_data (prof->handle, method, obtain_coverage_for_method);
3330 klass = mono_method_get_class (method);
3331 image = mono_class_get_image (klass);
3332 image_name = mono_image_get_name (image);
3334 sig = mono_signature_get_desc (mono_method_signature (method), TRUE);
3335 class_name = parse_generic_type_names (mono_type_get_name (mono_class_get_type (klass)));
3336 method_name = mono_method_get_name (method);
3338 if (coverage_data->len != 0) {
3339 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[0];
3340 first_filename = entry->filename ? entry->filename : "";
3342 first_filename = "";
3344 image_name = image_name ? image_name : "";
3345 sig = sig ? sig : "";
3346 method_name = method_name ? method_name : "";
3348 ENTER_LOG (&coverage_methods_ctr, logbuffer,
3349 EVENT_SIZE /* event */ +
3350 strlen (image_name) + 1 /* image name */ +
3351 strlen (class_name) + 1 /* class name */ +
3352 strlen (method_name) + 1 /* method name */ +
3353 strlen (sig) + 1 /* signature */ +
3354 strlen (first_filename) + 1 /* first file name */ +
3355 LEB128_SIZE /* token */ +
3356 LEB128_SIZE /* method id */ +
3357 LEB128_SIZE /* entries */
3360 emit_event (logbuffer, TYPE_COVERAGE_METHOD | TYPE_COVERAGE);
3361 emit_string (logbuffer, image_name, strlen (image_name) + 1);
3362 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3363 emit_string (logbuffer, method_name, strlen (method_name) + 1);
3364 emit_string (logbuffer, sig, strlen (sig) + 1);
3365 emit_string (logbuffer, first_filename, strlen (first_filename) + 1);
3367 emit_uvalue (logbuffer, mono_method_get_token (method));
3368 emit_uvalue (logbuffer, method_id);
3369 emit_value (logbuffer, coverage_data->len);
3371 EXIT_LOG_EXPLICIT (DO_SEND);
3373 for (i = 0; i < coverage_data->len; i++) {
3374 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[i];
3376 ENTER_LOG (&coverage_statements_ctr, logbuffer,
3377 EVENT_SIZE /* event */ +
3378 LEB128_SIZE /* method id */ +
3379 LEB128_SIZE /* offset */ +
3380 LEB128_SIZE /* counter */ +
3381 LEB128_SIZE /* line */ +
3382 LEB128_SIZE /* column */
3385 emit_event (logbuffer, TYPE_COVERAGE_STATEMENT | TYPE_COVERAGE);
3386 emit_uvalue (logbuffer, method_id);
3387 emit_uvalue (logbuffer, entry->offset);
3388 emit_uvalue (logbuffer, entry->counter);
3389 emit_uvalue (logbuffer, entry->line);
3390 emit_uvalue (logbuffer, entry->column);
3392 EXIT_LOG_EXPLICIT (DO_SEND);
3397 g_free (class_name);
3399 g_ptr_array_foreach (coverage_data, free_coverage_entry, NULL);
3400 g_ptr_array_free (coverage_data, TRUE);
3401 coverage_data = NULL;
3404 /* This empties the queue */
3406 count_queue (MonoLockFreeQueue *queue)
3408 MonoLockFreeQueueNode *node;
3411 while ((node = mono_lock_free_queue_dequeue (queue))) {
3413 mono_thread_hazardous_try_free (node, g_free);
3420 build_class_buffer (gpointer key, gpointer value, gpointer userdata)
3422 MonoClass *klass = (MonoClass *)key;
3423 MonoLockFreeQueue *class_methods = (MonoLockFreeQueue *)value;
3426 const char *assembly_name;
3427 int number_of_methods, partially_covered;
3428 guint fully_covered;
3430 image = mono_class_get_image (klass);
3431 assembly_name = mono_image_get_name (image);
3432 class_name = mono_type_get_name (mono_class_get_type (klass));
3434 assembly_name = assembly_name ? assembly_name : "";
3435 number_of_methods = mono_class_num_methods (klass);
3436 fully_covered = count_queue (class_methods);
3437 /* We don't handle partial covered yet */
3438 partially_covered = 0;
3440 ENTER_LOG (&coverage_classes_ctr, logbuffer,
3441 EVENT_SIZE /* event */ +
3442 strlen (assembly_name) + 1 /* assembly name */ +
3443 strlen (class_name) + 1 /* class name */ +
3444 LEB128_SIZE /* no. methods */ +
3445 LEB128_SIZE /* fully covered */ +
3446 LEB128_SIZE /* partially covered */
3449 emit_event (logbuffer, TYPE_COVERAGE_CLASS | TYPE_COVERAGE);
3450 emit_string (logbuffer, assembly_name, strlen (assembly_name) + 1);
3451 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3452 emit_uvalue (logbuffer, number_of_methods);
3453 emit_uvalue (logbuffer, fully_covered);
3454 emit_uvalue (logbuffer, partially_covered);
3456 EXIT_LOG_EXPLICIT (DO_SEND);
3458 g_free (class_name);
3462 get_coverage_for_image (MonoImage *image, int *number_of_methods, guint *fully_covered, int *partially_covered)
3464 MonoLockFreeQueue *image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3466 *number_of_methods = mono_image_get_table_rows (image, MONO_TABLE_METHOD);
3468 *fully_covered = count_queue (image_methods);
3472 // FIXME: We don't handle partially covered yet.
3473 *partially_covered = 0;
3477 build_assembly_buffer (gpointer key, gpointer value, gpointer userdata)
3479 MonoAssembly *assembly = (MonoAssembly *)value;
3480 MonoImage *image = mono_assembly_get_image (assembly);
3481 const char *name, *guid, *filename;
3482 int number_of_methods = 0, partially_covered = 0;
3483 guint fully_covered = 0;
3485 name = mono_image_get_name (image);
3486 guid = mono_image_get_guid (image);
3487 filename = mono_image_get_filename (image);
3489 name = name ? name : "";
3490 guid = guid ? guid : "";
3491 filename = filename ? filename : "";
3493 get_coverage_for_image (image, &number_of_methods, &fully_covered, &partially_covered);
3495 ENTER_LOG (&coverage_assemblies_ctr, logbuffer,
3496 EVENT_SIZE /* event */ +
3497 strlen (name) + 1 /* name */ +
3498 strlen (guid) + 1 /* guid */ +
3499 strlen (filename) + 1 /* file name */ +
3500 LEB128_SIZE /* no. methods */ +
3501 LEB128_SIZE /* fully covered */ +
3502 LEB128_SIZE /* partially covered */
3505 emit_event (logbuffer, TYPE_COVERAGE_ASSEMBLY | TYPE_COVERAGE);
3506 emit_string (logbuffer, name, strlen (name) + 1);
3507 emit_string (logbuffer, guid, strlen (guid) + 1);
3508 emit_string (logbuffer, filename, strlen (filename) + 1);
3509 emit_uvalue (logbuffer, number_of_methods);
3510 emit_uvalue (logbuffer, fully_covered);
3511 emit_uvalue (logbuffer, partially_covered);
3513 EXIT_LOG_EXPLICIT (DO_SEND);
3517 dump_coverage (MonoProfiler *prof)
3519 if (!coverage_initialized)
3522 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Started dump\n");)
3525 mono_os_mutex_lock (&coverage_mutex);
3526 mono_conc_hashtable_foreach (coverage_assemblies, build_assembly_buffer, NULL);
3527 mono_conc_hashtable_foreach (coverage_classes, build_class_buffer, NULL);
3528 mono_conc_hashtable_foreach (coverage_methods, build_method_buffer, prof);
3529 mono_os_mutex_unlock (&coverage_mutex);
3531 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Finished dump\n");)
3534 static MonoLockFreeQueueNode *
3535 create_method_node (MonoMethod *method)
3537 MethodNode *node = (MethodNode *) g_malloc (sizeof (MethodNode));
3538 mono_lock_free_queue_node_init ((MonoLockFreeQueueNode *) node, FALSE);
3539 node->method = method;
3541 return (MonoLockFreeQueueNode *) node;
3545 coverage_filter (MonoProfiler *prof, MonoMethod *method)
3550 MonoAssembly *assembly;
3551 MonoMethodHeader *header;
3552 guint32 iflags, flags, code_size;
3553 char *fqn, *classname;
3554 gboolean has_positive, found;
3555 MonoLockFreeQueue *image_methods, *class_methods;
3556 MonoLockFreeQueueNode *node;
3558 g_assert (coverage_initialized && "Why are we being asked for coverage filter info when we're not doing coverage?");
3560 COVERAGE_DEBUG(fprintf (stderr, "Coverage filter for %s\n", mono_method_get_name (method));)
3562 flags = mono_method_get_flags (method, &iflags);
3563 if ((iflags & 0x1000 /*METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL*/) ||
3564 (flags & 0x2000 /*METHOD_ATTRIBUTE_PINVOKE_IMPL*/)) {
3565 COVERAGE_DEBUG(fprintf (stderr, " Internal call or pinvoke - ignoring\n");)
3569 // Don't need to do anything else if we're already tracking this method
3570 if (mono_conc_hashtable_lookup (coverage_methods, method)) {
3571 COVERAGE_DEBUG(fprintf (stderr, " Already tracking\n");)
3575 klass = mono_method_get_class (method);
3576 image = mono_class_get_image (klass);
3578 // Don't handle coverage for the core assemblies
3579 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)) != NULL)
3582 if (prof->coverage_filters) {
3583 /* Check already filtered classes first */
3584 if (mono_conc_hashtable_lookup (filtered_classes, klass)) {
3585 COVERAGE_DEBUG(fprintf (stderr, " Already filtered\n");)
3589 classname = mono_type_get_name (mono_class_get_type (klass));
3591 fqn = g_strdup_printf ("[%s]%s", mono_image_get_name (image), classname);
3593 COVERAGE_DEBUG(fprintf (stderr, " Looking for %s in filter\n", fqn);)
3594 // Check positive filters first
3595 has_positive = FALSE;
3597 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3598 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3600 if (filter [0] == '+') {
3601 filter = &filter [1];
3603 COVERAGE_DEBUG(fprintf (stderr, " Checking against +%s ...", filter);)
3605 if (strstr (fqn, filter) != NULL) {
3606 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3609 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3611 has_positive = TRUE;
3615 if (has_positive && !found) {
3616 COVERAGE_DEBUG(fprintf (stderr, " Positive match was not found\n");)
3618 mono_os_mutex_lock (&coverage_mutex);
3619 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3620 mono_os_mutex_unlock (&coverage_mutex);
3627 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3628 // FIXME: Is substring search sufficient?
3629 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3630 if (filter [0] == '+')
3634 filter = &filter [1];
3635 COVERAGE_DEBUG(fprintf (stderr, " Checking against -%s ...", filter);)
3637 if (strstr (fqn, filter) != NULL) {
3638 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3640 mono_os_mutex_lock (&coverage_mutex);
3641 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3642 mono_os_mutex_unlock (&coverage_mutex);
3648 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3656 COVERAGE_DEBUG(fprintf (stderr, " Handling coverage for %s\n", mono_method_get_name (method));)
3657 header = mono_method_get_header_checked (method, &error);
3658 mono_error_cleanup (&error);
3660 mono_method_header_get_code (header, &code_size, NULL);
3662 assembly = mono_image_get_assembly (image);
3664 // Need to keep the assemblies around for as long as they are kept in the hashtable
3665 // Nunit, for example, has a habit of unloading them before the coverage statistics are
3666 // generated causing a crash. See https://bugzilla.xamarin.com/show_bug.cgi?id=39325
3667 mono_assembly_addref (assembly);
3669 mono_os_mutex_lock (&coverage_mutex);
3670 mono_conc_hashtable_insert (coverage_methods, method, method);
3671 mono_conc_hashtable_insert (coverage_assemblies, assembly, assembly);
3672 mono_os_mutex_unlock (&coverage_mutex);
3674 image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3676 if (image_methods == NULL) {
3677 image_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3678 mono_lock_free_queue_init (image_methods);
3679 mono_os_mutex_lock (&coverage_mutex);
3680 mono_conc_hashtable_insert (image_to_methods, image, image_methods);
3681 mono_os_mutex_unlock (&coverage_mutex);
3684 node = create_method_node (method);
3685 mono_lock_free_queue_enqueue (image_methods, node);
3687 class_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (coverage_classes, klass);
3689 if (class_methods == NULL) {
3690 class_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3691 mono_lock_free_queue_init (class_methods);
3692 mono_os_mutex_lock (&coverage_mutex);
3693 mono_conc_hashtable_insert (coverage_classes, klass, class_methods);
3694 mono_os_mutex_unlock (&coverage_mutex);
3697 node = create_method_node (method);
3698 mono_lock_free_queue_enqueue (class_methods, node);
3703 #define LINE_BUFFER_SIZE 4096
3704 /* Max file limit of 128KB */
3705 #define MAX_FILE_SIZE 128 * 1024
3707 get_file_content (FILE *stream)
3712 int res, offset = 0;
3714 res = fseek (stream, 0, SEEK_END);
3718 filesize = ftell (stream);
3722 res = fseek (stream, 0, SEEK_SET);
3726 if (filesize > MAX_FILE_SIZE)
3729 buffer = (char *) g_malloc ((filesize + 1) * sizeof (char));
3730 while ((bytes_read = fread (buffer + offset, 1, LINE_BUFFER_SIZE, stream)) > 0)
3731 offset += bytes_read;
3733 /* NULL terminate our buffer */
3734 buffer[filesize] = '\0';
3739 get_next_line (char *contents, char **next_start)
3743 if (p == NULL || *p == '\0') {
3748 while (*p != '\n' && *p != '\0')
3753 *next_start = p + 1;
3761 init_suppressed_assemblies (void)
3767 suppressed_assemblies = mono_conc_hashtable_new (g_str_hash, g_str_equal);
3768 sa_file = fopen (SUPPRESSION_DIR "/mono-profiler-log.suppression", "r");
3769 if (sa_file == NULL)
3772 /* Don't need to free @content as it is referred to by the lines stored in @suppressed_assemblies */
3773 content = get_file_content (sa_file);
3774 if (content == NULL) {
3775 g_error ("mono-profiler-log.suppression is greater than 128kb - aborting\n");
3778 while ((line = get_next_line (content, &content))) {
3779 line = g_strchomp (g_strchug (line));
3780 /* No locking needed as we're doing initialization */
3781 mono_conc_hashtable_insert (suppressed_assemblies, line, line);
3788 parse_cov_filter_file (GPtrArray *filters, const char *file)
3791 char *line, *content;
3793 filter_file = fopen (file, "r");
3794 if (filter_file == NULL) {
3795 fprintf (stderr, "Unable to open %s\n", file);
3799 /* Don't need to free content as it is referred to by the lines stored in @filters */
3800 content = get_file_content (filter_file);
3801 if (content == NULL)
3802 fprintf (stderr, "WARNING: %s is greater than 128kb - ignoring\n", file);
3804 while ((line = get_next_line (content, &content)))
3805 g_ptr_array_add (filters, g_strchug (g_strchomp (line)));
3807 fclose (filter_file);
3811 coverage_init (MonoProfiler *prof)
3813 g_assert (!coverage_initialized && "Why are we initializing coverage twice?");
3815 COVERAGE_DEBUG(fprintf (stderr, "Coverage initialized\n");)
3817 mono_os_mutex_init (&coverage_mutex);
3818 coverage_methods = mono_conc_hashtable_new (NULL, NULL);
3819 coverage_assemblies = mono_conc_hashtable_new (NULL, NULL);
3820 coverage_classes = mono_conc_hashtable_new (NULL, NULL);
3821 filtered_classes = mono_conc_hashtable_new (NULL, NULL);
3822 image_to_methods = mono_conc_hashtable_new (NULL, NULL);
3823 init_suppressed_assemblies ();
3825 coverage_initialized = TRUE;
3829 unref_coverage_assemblies (gpointer key, gpointer value, gpointer userdata)
3831 MonoAssembly *assembly = (MonoAssembly *)value;
3832 mono_assembly_close (assembly);
3836 free_sample_hit (gpointer p)
3838 mono_lock_free_free (p, SAMPLE_BLOCK_SIZE);
3842 cleanup_reusable_samples (MonoProfiler *prof)
3846 while ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->sample_reuse_queue)))
3847 mono_thread_hazardous_try_free (sample, free_sample_hit);
3851 log_shutdown (MonoProfiler *prof)
3853 InterlockedWrite (&in_shutdown, 1);
3856 counters_and_perfcounters_sample (prof);
3858 dump_coverage (prof);
3862 if (write (prof->pipes [1], &c, 1) != 1) {
3863 fprintf (stderr, "Could not write to pipe: %s\n", strerror (errno));
3867 mono_native_thread_join (prof->helper_thread);
3869 mono_os_mutex_destroy (&counters_mutex);
3871 MonoCounterAgent *mc_next;
3873 for (MonoCounterAgent *cur = counters; cur; cur = mc_next) {
3874 mc_next = cur->next;
3878 PerfCounterAgent *pc_next;
3880 for (PerfCounterAgent *cur = perfcounters; cur; cur = pc_next) {
3881 pc_next = cur->next;
3886 * Ensure that we empty the LLS completely, even if some nodes are
3887 * not immediately removed upon calling mono_lls_remove (), by
3888 * iterating until the head is NULL.
3890 while (profiler_thread_list.head) {
3891 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
3892 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
3894 remove_thread (thread);
3895 } MONO_LLS_FOREACH_SAFE_END
3899 * Ensure that all threads have been freed, so that we don't miss any
3900 * buffers when we shut down the writer thread below.
3902 mono_thread_hazardous_try_free_all ();
3904 InterlockedWrite (&prof->run_dumper_thread, 0);
3905 mono_os_sem_post (&prof->dumper_queue_sem);
3906 mono_native_thread_join (prof->dumper_thread);
3907 mono_os_sem_destroy (&prof->dumper_queue_sem);
3909 InterlockedWrite (&prof->run_writer_thread, 0);
3910 mono_os_sem_post (&prof->writer_queue_sem);
3911 mono_native_thread_join (prof->writer_thread);
3912 mono_os_sem_destroy (&prof->writer_queue_sem);
3915 * Free all writer queue entries, and ensure that all sample hits will be
3916 * added to the sample reuse queue.
3918 mono_thread_hazardous_try_free_all ();
3920 cleanup_reusable_samples (prof);
3923 * Finally, make sure that all sample hits are freed. This should cover all
3924 * hazardous data from the profiler. We can now be sure that the runtime
3925 * won't later invoke free functions in the profiler library after it has
3928 mono_thread_hazardous_try_free_all ();
3930 gint32 state = InterlockedRead (&buffer_lock_state);
3932 g_assert (!(state & 0xFFFF) && "Why is the reader count still non-zero?");
3933 g_assert (!(state >> 16) && "Why is the exclusive lock still held?");
3935 #if defined (HAVE_SYS_ZLIB)
3937 gzclose (prof->gzfile);
3939 if (prof->pipe_output)
3940 pclose (prof->file);
3942 fclose (prof->file);
3944 mono_conc_hashtable_destroy (prof->method_table);
3945 mono_os_mutex_destroy (&prof->method_table_mutex);
3947 if (coverage_initialized) {
3948 mono_os_mutex_lock (&coverage_mutex);
3949 mono_conc_hashtable_foreach (coverage_assemblies, unref_coverage_assemblies, prof);
3950 mono_os_mutex_unlock (&coverage_mutex);
3952 mono_conc_hashtable_destroy (coverage_methods);
3953 mono_conc_hashtable_destroy (coverage_assemblies);
3954 mono_conc_hashtable_destroy (coverage_classes);
3955 mono_conc_hashtable_destroy (filtered_classes);
3957 mono_conc_hashtable_destroy (image_to_methods);
3958 mono_conc_hashtable_destroy (suppressed_assemblies);
3959 mono_os_mutex_destroy (&coverage_mutex);
3964 g_free (prof->args);
3969 new_filename (const char* filename)
3971 time_t t = time (NULL);
3972 int pid = process_id ();
3977 int count_dates = 0;
3981 for (p = filename; *p; p++) {
3992 if (!count_dates && !count_pids)
3993 return pstrdup (filename);
3994 snprintf (pid_buf, sizeof (pid_buf), "%d", pid);
3996 snprintf (time_buf, sizeof (time_buf), "%d%02d%02d%02d%02d%02d",
3997 1900 + ts->tm_year, 1 + ts->tm_mon, ts->tm_mday, ts->tm_hour, ts->tm_min, ts->tm_sec);
3998 s_date = strlen (time_buf);
3999 s_pid = strlen (pid_buf);
4000 d = res = (char *) g_malloc (strlen (filename) + s_date * count_dates + s_pid * count_pids);
4001 for (p = filename; *p; p++) {
4008 strcpy (d, time_buf);
4011 } else if (*p == 'p') {
4012 strcpy (d, pid_buf);
4015 } else if (*p == '%') {
4028 add_to_fd_set (fd_set *set, int fd, int *max_fd)
4031 * This should only trigger for the basic FDs (server socket, pipes) at
4032 * startup if for some mysterious reason they're too large. In this case,
4033 * the profiler really can't function, and we're better off printing an
4034 * error and exiting.
4036 if (fd >= FD_SETSIZE) {
4037 fprintf (stderr, "File descriptor is out of bounds for fd_set: %d\n", fd);
4048 helper_thread (void *arg)
4050 MonoProfiler *prof = (MonoProfiler *) arg;
4052 mono_threads_attach_tools_thread ();
4053 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler helper");
4055 MonoProfilerThread *thread = init_thread (prof, FALSE);
4057 GArray *command_sockets = g_array_new (FALSE, FALSE, sizeof (int));
4065 add_to_fd_set (&rfds, prof->server_socket, &max_fd);
4066 add_to_fd_set (&rfds, prof->pipes [0], &max_fd);
4068 for (gint i = 0; i < command_sockets->len; i++)
4069 add_to_fd_set (&rfds, g_array_index (command_sockets, int, i), &max_fd);
4071 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
4073 // Sleep for 1sec or until a file descriptor has data.
4074 if (select (max_fd + 1, &rfds, NULL, NULL, &tv) == -1) {
4078 fprintf (stderr, "Error in mono-profiler-log server: %s", strerror (errno));
4083 counters_and_perfcounters_sample (prof);
4085 buffer_lock_excl ();
4087 sync_point (SYNC_POINT_PERIODIC);
4089 buffer_unlock_excl ();
4091 // Are we shutting down?
4092 if (FD_ISSET (prof->pipes [0], &rfds)) {
4094 read (prof->pipes [0], &c, 1);
4098 for (gint i = 0; i < command_sockets->len; i++) {
4099 int fd = g_array_index (command_sockets, int, i);
4101 if (!FD_ISSET (fd, &rfds))
4105 int len = read (fd, buf, sizeof (buf) - 1);
4111 // The other end disconnected.
4112 g_array_remove_index (command_sockets, i);
4120 if (!strcmp (buf, "heapshot\n") && hs_mode_ondemand) {
4121 // Rely on the finalization callback triggering a GC.
4122 heapshot_requested = 1;
4123 mono_gc_finalize_notify ();
4127 if (FD_ISSET (prof->server_socket, &rfds)) {
4128 int fd = accept (prof->server_socket, NULL, NULL);
4131 if (fd >= FD_SETSIZE)
4134 g_array_append_val (command_sockets, fd);
4139 for (gint i = 0; i < command_sockets->len; i++)
4140 close (g_array_index (command_sockets, int, i));
4142 g_array_free (command_sockets, TRUE);
4144 send_log_unsafe (FALSE);
4145 deinit_thread (thread);
4147 mono_thread_info_detach ();
4153 start_helper_thread (MonoProfiler* prof)
4155 if (pipe (prof->pipes) == -1) {
4156 fprintf (stderr, "Cannot create pipe: %s\n", strerror (errno));
4160 prof->server_socket = socket (PF_INET, SOCK_STREAM, 0);
4162 if (prof->server_socket == -1) {
4163 fprintf (stderr, "Cannot create server socket: %s\n", strerror (errno));
4167 struct sockaddr_in server_address;
4169 memset (&server_address, 0, sizeof (server_address));
4170 server_address.sin_family = AF_INET;
4171 server_address.sin_addr.s_addr = INADDR_ANY;
4172 server_address.sin_port = htons (prof->command_port);
4174 if (bind (prof->server_socket, (struct sockaddr *) &server_address, sizeof (server_address)) == -1) {
4175 fprintf (stderr, "Cannot bind server socket on port %d: %s\n", prof->command_port, strerror (errno));
4176 close (prof->server_socket);
4180 if (listen (prof->server_socket, 1) == -1) {
4181 fprintf (stderr, "Cannot listen on server socket: %s\n", strerror (errno));
4182 close (prof->server_socket);
4186 socklen_t slen = sizeof (server_address);
4188 if (getsockname (prof->server_socket, (struct sockaddr *) &server_address, &slen)) {
4189 fprintf (stderr, "Could not get assigned port: %s\n", strerror (errno));
4190 close (prof->server_socket);
4194 prof->command_port = ntohs (server_address.sin_port);
4196 if (!mono_native_thread_create (&prof->helper_thread, helper_thread, prof)) {
4197 fprintf (stderr, "Could not start helper thread\n");
4198 close (prof->server_socket);
4204 free_writer_entry (gpointer p)
4206 mono_lock_free_free (p, WRITER_ENTRY_BLOCK_SIZE);
4210 handle_writer_queue_entry (MonoProfiler *prof)
4212 WriterQueueEntry *entry;
4214 if ((entry = (WriterQueueEntry *) mono_lock_free_queue_dequeue (&prof->writer_queue))) {
4215 if (!entry->methods)
4218 gboolean wrote_methods = FALSE;
4221 * Encode the method events in a temporary log buffer that we
4222 * flush to disk before the main buffer, ensuring that all
4223 * methods have metadata emitted before they're referenced.
4225 * We use a 'proper' thread-local buffer for this as opposed
4226 * to allocating and freeing a buffer by hand because the call
4227 * to mono_method_full_name () below may trigger class load
4228 * events when it retrieves the signature of the method. So a
4229 * thread-local buffer needs to exist when such events occur.
4231 for (guint i = 0; i < entry->methods->len; i++) {
4232 MethodInfo *info = (MethodInfo *) g_ptr_array_index (entry->methods, i);
4234 if (mono_conc_hashtable_lookup (prof->method_table, info->method))
4235 goto free_info; // This method already has metadata emitted.
4238 * Other threads use this hash table to get a general
4239 * idea of whether a method has already been emitted to
4240 * the stream. Due to the way we add to this table, it
4241 * can easily happen that multiple threads queue up the
4242 * same methods, but that's OK since eventually all
4243 * methods will be in this table and the thread-local
4244 * method lists will just be empty for the rest of the
4247 mono_os_mutex_lock (&prof->method_table_mutex);
4248 mono_conc_hashtable_insert (prof->method_table, info->method, info->method);
4249 mono_os_mutex_unlock (&prof->method_table_mutex);
4251 char *name = mono_method_full_name (info->method, 1);
4252 int nlen = strlen (name) + 1;
4253 void *cstart = info->ji ? mono_jit_info_get_code_start (info->ji) : NULL;
4254 int csize = info->ji ? mono_jit_info_get_code_size (info->ji) : 0;
4256 ENTER_LOG (&method_jits_ctr, logbuffer,
4257 EVENT_SIZE /* event */ +
4258 LEB128_SIZE /* method */ +
4259 LEB128_SIZE /* start */ +
4260 LEB128_SIZE /* size */ +
4264 emit_event_time (logbuffer, TYPE_JIT | TYPE_METHOD, info->time);
4265 emit_method_inner (logbuffer, info->method);
4266 emit_ptr (logbuffer, cstart);
4267 emit_value (logbuffer, csize);
4269 memcpy (logbuffer->cursor, name, nlen);
4270 logbuffer->cursor += nlen;
4272 EXIT_LOG_EXPLICIT (NO_SEND);
4276 wrote_methods = TRUE;
4282 g_ptr_array_free (entry->methods, TRUE);
4284 if (wrote_methods) {
4285 MonoProfilerThread *thread = PROF_TLS_GET ();
4287 dump_buffer_threadless (prof, thread->buffer);
4288 init_buffer_state (thread);
4292 dump_buffer (prof, entry->buffer);
4294 mono_thread_hazardous_try_free (entry, free_writer_entry);
4303 writer_thread (void *arg)
4305 MonoProfiler *prof = (MonoProfiler *)arg;
4307 mono_threads_attach_tools_thread ();
4308 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler writer");
4312 MonoProfilerThread *thread = init_thread (prof, FALSE);
4314 while (InterlockedRead (&prof->run_writer_thread)) {
4315 mono_os_sem_wait (&prof->writer_queue_sem, MONO_SEM_FLAGS_NONE);
4316 handle_writer_queue_entry (prof);
4319 /* Drain any remaining entries on shutdown. */
4320 while (handle_writer_queue_entry (prof));
4322 free_buffer (thread->buffer, thread->buffer->size);
4323 deinit_thread (thread);
4325 mono_thread_info_detach ();
4331 start_writer_thread (MonoProfiler* prof)
4333 InterlockedWrite (&prof->run_writer_thread, 1);
4335 if (!mono_native_thread_create (&prof->writer_thread, writer_thread, prof)) {
4336 fprintf (stderr, "Could not start writer thread\n");
4342 reuse_sample_hit (gpointer p)
4344 SampleHit *sample = p;
4346 mono_lock_free_queue_node_unpoison (&sample->node);
4347 mono_lock_free_queue_enqueue (&sample->prof->sample_reuse_queue, &sample->node);
4351 handle_dumper_queue_entry (MonoProfiler *prof)
4355 if ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->dumper_queue))) {
4356 for (int i = 0; i < sample->count; ++i) {
4357 MonoMethod *method = sample->frames [i].method;
4358 MonoDomain *domain = sample->frames [i].domain;
4359 void *address = sample->frames [i].base_address;
4362 g_assert (domain && "What happened to the domain pointer?");
4363 g_assert (address && "What happened to the instruction pointer?");
4365 MonoJitInfo *ji = mono_jit_info_table_find (domain, (char *) address);
4368 sample->frames [i].method = mono_jit_info_get_method (ji);
4372 ENTER_LOG (&sample_hits_ctr, logbuffer,
4373 EVENT_SIZE /* event */ +
4374 BYTE_SIZE /* type */ +
4375 LEB128_SIZE /* tid */ +
4376 LEB128_SIZE /* count */ +
4378 LEB128_SIZE /* ip */
4380 LEB128_SIZE /* managed count */ +
4382 LEB128_SIZE /* method */
4386 emit_event_time (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_HIT, sample->time);
4387 emit_ptr (logbuffer, (void *) sample->tid);
4388 emit_value (logbuffer, 1);
4390 // TODO: Actual native unwinding.
4391 for (int i = 0; i < 1; ++i) {
4392 emit_ptr (logbuffer, sample->ip);
4393 add_code_pointer ((uintptr_t) sample->ip);
4396 /* new in data version 6 */
4397 emit_uvalue (logbuffer, sample->count);
4399 for (int i = 0; i < sample->count; ++i)
4400 emit_method (logbuffer, sample->frames [i].method);
4402 EXIT_LOG_EXPLICIT (DO_SEND);
4404 mono_thread_hazardous_try_free (sample, reuse_sample_hit);
4406 dump_unmanaged_coderefs (prof);
4413 dumper_thread (void *arg)
4415 MonoProfiler *prof = (MonoProfiler *)arg;
4417 mono_threads_attach_tools_thread ();
4418 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler dumper");
4420 MonoProfilerThread *thread = init_thread (prof, FALSE);
4422 while (InterlockedRead (&prof->run_dumper_thread)) {
4424 * Flush samples every second so it doesn't seem like the profiler is
4425 * not working if the program is mostly idle.
4427 if (mono_os_sem_timedwait (&prof->dumper_queue_sem, 1000, MONO_SEM_FLAGS_NONE) == MONO_SEM_TIMEDWAIT_RET_TIMEDOUT)
4428 send_log_unsafe (FALSE);
4430 handle_dumper_queue_entry (prof);
4433 /* Drain any remaining entries on shutdown. */
4434 while (handle_dumper_queue_entry (prof));
4436 send_log_unsafe (FALSE);
4437 deinit_thread (thread);
4439 mono_thread_info_detach ();
4445 start_dumper_thread (MonoProfiler* prof)
4447 InterlockedWrite (&prof->run_dumper_thread, 1);
4449 if (!mono_native_thread_create (&prof->dumper_thread, dumper_thread, prof)) {
4450 fprintf (stderr, "Could not start dumper thread\n");
4456 register_counter (const char *name, gint32 *counter)
4458 mono_counters_register (name, MONO_COUNTER_UINT | MONO_COUNTER_PROFILER | MONO_COUNTER_MONOTONIC, counter);
4462 runtime_initialized (MonoProfiler *profiler)
4464 InterlockedWrite (&runtime_inited, 1);
4466 register_counter ("Sample events allocated", &sample_allocations_ctr);
4467 register_counter ("Log buffers allocated", &buffer_allocations_ctr);
4469 register_counter ("Event: Sync points", &sync_points_ctr);
4470 register_counter ("Event: Heap objects", &heap_objects_ctr);
4471 register_counter ("Event: Heap starts", &heap_starts_ctr);
4472 register_counter ("Event: Heap ends", &heap_ends_ctr);
4473 register_counter ("Event: Heap roots", &heap_roots_ctr);
4474 register_counter ("Event: GC events", &gc_events_ctr);
4475 register_counter ("Event: GC resizes", &gc_resizes_ctr);
4476 register_counter ("Event: GC allocations", &gc_allocs_ctr);
4477 register_counter ("Event: GC moves", &gc_moves_ctr);
4478 register_counter ("Event: GC handle creations", &gc_handle_creations_ctr);
4479 register_counter ("Event: GC handle deletions", &gc_handle_deletions_ctr);
4480 register_counter ("Event: GC finalize starts", &finalize_begins_ctr);
4481 register_counter ("Event: GC finalize ends", &finalize_ends_ctr);
4482 register_counter ("Event: GC finalize object starts", &finalize_object_begins_ctr);
4483 register_counter ("Event: GC finalize object ends", &finalize_object_ends_ctr);
4484 register_counter ("Event: Image loads", &image_loads_ctr);
4485 register_counter ("Event: Image unloads", &image_unloads_ctr);
4486 register_counter ("Event: Assembly loads", &assembly_loads_ctr);
4487 register_counter ("Event: Assembly unloads", &assembly_unloads_ctr);
4488 register_counter ("Event: Class loads", &class_loads_ctr);
4489 register_counter ("Event: Class unloads", &class_unloads_ctr);
4490 register_counter ("Event: Method entries", &method_entries_ctr);
4491 register_counter ("Event: Method exits", &method_exits_ctr);
4492 register_counter ("Event: Method exception leaves", &method_exception_exits_ctr);
4493 register_counter ("Event: Method JITs", &method_jits_ctr);
4494 register_counter ("Event: Code buffers", &code_buffers_ctr);
4495 register_counter ("Event: Exception throws", &exception_throws_ctr);
4496 register_counter ("Event: Exception clauses", &exception_clauses_ctr);
4497 register_counter ("Event: Monitor events", &monitor_events_ctr);
4498 register_counter ("Event: Thread starts", &thread_starts_ctr);
4499 register_counter ("Event: Thread ends", &thread_ends_ctr);
4500 register_counter ("Event: Thread names", &thread_names_ctr);
4501 register_counter ("Event: Domain loads", &domain_loads_ctr);
4502 register_counter ("Event: Domain unloads", &domain_unloads_ctr);
4503 register_counter ("Event: Domain names", &domain_names_ctr);
4504 register_counter ("Event: Context loads", &context_loads_ctr);
4505 register_counter ("Event: Context unloads", &context_unloads_ctr);
4506 register_counter ("Event: Sample binaries", &sample_ubins_ctr);
4507 register_counter ("Event: Sample symbols", &sample_usyms_ctr);
4508 register_counter ("Event: Sample hits", &sample_hits_ctr);
4509 register_counter ("Event: Counter descriptors", &counter_descriptors_ctr);
4510 register_counter ("Event: Counter samples", &counter_samples_ctr);
4511 register_counter ("Event: Performance counter descriptors", &perfcounter_descriptors_ctr);
4512 register_counter ("Event: Performance counter samples", &perfcounter_samples_ctr);
4513 register_counter ("Event: Coverage methods", &coverage_methods_ctr);
4514 register_counter ("Event: Coverage statements", &coverage_statements_ctr);
4515 register_counter ("Event: Coverage classes", &coverage_classes_ctr);
4516 register_counter ("Event: Coverage assemblies", &coverage_assemblies_ctr);
4518 counters_init (profiler);
4521 * We must start the helper thread before the writer thread. This is
4522 * because the helper thread sets up the command port which is written to
4523 * the log header by the writer thread.
4525 start_helper_thread (profiler);
4526 start_writer_thread (profiler);
4527 start_dumper_thread (profiler);
4531 create_profiler (const char *args, const char *filename, GPtrArray *filters)
4534 int force_delete = 0;
4536 log_profiler = (MonoProfiler *) g_calloc (1, sizeof (MonoProfiler));
4537 log_profiler->args = pstrdup (args);
4538 log_profiler->command_port = command_port;
4540 if (filename && *filename == '-') {
4543 g_warning ("WARNING: the output:-FILENAME option is deprecated, the profiler now always overrides the output file\n");
4546 //If filename begin with +, append the pid at the end
4547 if (filename && *filename == '+')
4548 filename = g_strdup_printf ("%s.%d", filename + 1, getpid ());
4553 filename = "|mprof-report -";
4555 filename = "output.mlpd";
4556 nf = (char*)filename;
4558 nf = new_filename (filename);
4560 int s = strlen (nf) + 32;
4561 char *p = (char *) g_malloc (s);
4562 snprintf (p, s, "|mprof-report '--out=%s' -", nf);
4568 log_profiler->file = popen (nf + 1, "w");
4569 log_profiler->pipe_output = 1;
4570 } else if (*nf == '#') {
4571 int fd = strtol (nf + 1, NULL, 10);
4572 log_profiler->file = fdopen (fd, "a");
4576 log_profiler->file = fopen (nf, "wb");
4578 if (!log_profiler->file) {
4579 fprintf (stderr, "Cannot create profiler output: %s\n", nf);
4583 #if defined (HAVE_SYS_ZLIB)
4585 log_profiler->gzfile = gzdopen (fileno (log_profiler->file), "wb");
4589 * If you hit this assert while increasing MAX_FRAMES, you need to increase
4590 * SAMPLE_BLOCK_SIZE as well.
4592 g_assert (SAMPLE_SLOT_SIZE (MAX_FRAMES) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (SAMPLE_BLOCK_SIZE));
4594 // FIXME: We should free this stuff too.
4595 mono_lock_free_allocator_init_size_class (&log_profiler->sample_size_class, SAMPLE_SLOT_SIZE (num_frames), SAMPLE_BLOCK_SIZE);
4596 mono_lock_free_allocator_init_allocator (&log_profiler->sample_allocator, &log_profiler->sample_size_class, MONO_MEM_ACCOUNT_PROFILER);
4598 mono_lock_free_queue_init (&log_profiler->sample_reuse_queue);
4600 g_assert (sizeof (WriterQueueEntry) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (WRITER_ENTRY_BLOCK_SIZE));
4602 // FIXME: We should free this stuff too.
4603 mono_lock_free_allocator_init_size_class (&log_profiler->writer_entry_size_class, sizeof (WriterQueueEntry), WRITER_ENTRY_BLOCK_SIZE);
4604 mono_lock_free_allocator_init_allocator (&log_profiler->writer_entry_allocator, &log_profiler->writer_entry_size_class, MONO_MEM_ACCOUNT_PROFILER);
4606 mono_lock_free_queue_init (&log_profiler->writer_queue);
4607 mono_os_sem_init (&log_profiler->writer_queue_sem, 0);
4609 mono_lock_free_queue_init (&log_profiler->dumper_queue);
4610 mono_os_sem_init (&log_profiler->dumper_queue_sem, 0);
4612 mono_os_mutex_init (&log_profiler->method_table_mutex);
4613 log_profiler->method_table = mono_conc_hashtable_new (NULL, NULL);
4616 coverage_init (log_profiler);
4617 log_profiler->coverage_filters = filters;
4619 log_profiler->startup_time = current_time ();
4623 * declaration to silence the compiler: this is the entry point that
4624 * mono will load from the shared library and call.
4627 mono_profiler_init (const char *desc);
4630 mono_profiler_init_log (const char *desc);
4633 * this is the entry point that will be used when the profiler
4634 * is embedded inside the main executable.
4637 mono_profiler_init_log (const char *desc)
4639 mono_profiler_init (desc);
4643 mono_profiler_init (const char *desc)
4645 GPtrArray *filters = NULL;
4647 proflog_parse_args (&config, desc [3] == ':' ? desc + 4 : "");
4649 //XXX maybe later cleanup to use config directly
4650 nocalls = !(config.effective_mask & PROFLOG_CALL_EVENTS);
4651 no_counters = !(config.effective_mask & PROFLOG_COUNTER_EVENTS);
4652 do_report = config.do_report;
4653 do_debug = config.do_debug;
4654 do_heap_shot = (config.effective_mask & PROFLOG_HEAPSHOT_FEATURE);
4655 hs_mode_ondemand = config.hs_mode_ondemand;
4656 hs_mode_ms = config.hs_mode_ms;
4657 hs_mode_gc = config.hs_mode_gc;
4658 do_mono_sample = (config.effective_mask & PROFLOG_SAMPLING_FEATURE);
4659 use_zip = config.use_zip;
4660 command_port = config.command_port;
4661 num_frames = config.num_frames;
4662 notraces = config.notraces;
4663 max_allocated_sample_hits = config.max_allocated_sample_hits;
4664 max_call_depth = config.max_call_depth;
4665 do_coverage = (config.effective_mask & PROFLOG_CODE_COV_FEATURE);
4666 debug_coverage = config.debug_coverage;
4668 if (config.cov_filter_files) {
4669 filters = g_ptr_array_new ();
4671 for (i = 0; i < config.cov_filter_files->len; ++i) {
4672 const char *name = config.cov_filter_files->pdata [i];
4673 parse_cov_filter_file (filters, name);
4681 create_profiler (desc, config.output_filename, filters);
4683 mono_lls_init (&profiler_thread_list, NULL);
4685 MonoProfilerHandle handle = log_profiler->handle = mono_profiler_install (log_profiler);
4687 //Required callbacks
4688 mono_profiler_set_runtime_shutdown_end_callback (handle, log_shutdown);
4689 mono_profiler_set_runtime_initialized_callback (handle, runtime_initialized);
4691 mono_profiler_set_gc_event_callback (handle, gc_event);
4692 mono_profiler_set_gc_resize_callback (handle, gc_resize);
4693 mono_profiler_set_thread_started_callback (handle, thread_start);
4694 mono_profiler_set_thread_stopped_callback (handle, thread_end);
4696 //It's questionable whether we actually want this to be mandatory, maybe put it behind the actual event?
4697 mono_profiler_set_thread_name_callback (handle, thread_name);
4699 if (config.effective_mask & PROFLOG_DOMAIN_EVENTS) {
4700 mono_profiler_set_domain_loaded_callback (handle, domain_loaded);
4701 mono_profiler_set_domain_unloading_callback (handle, domain_unloaded);
4702 mono_profiler_set_domain_name_callback (handle, domain_name);
4705 if (config.effective_mask & PROFLOG_ASSEMBLY_EVENTS) {
4706 mono_profiler_set_assembly_loaded_callback (handle, assembly_loaded);
4707 mono_profiler_set_assembly_unloading_callback (handle, assembly_unloaded);
4710 if (config.effective_mask & PROFLOG_MODULE_EVENTS) {
4711 mono_profiler_set_image_loaded_callback (handle, image_loaded);
4712 mono_profiler_set_image_unloading_callback (handle, image_unloaded);
4715 if (config.effective_mask & PROFLOG_CLASS_EVENTS)
4716 mono_profiler_set_class_loaded_callback (handle, class_loaded);
4718 if (config.effective_mask & PROFLOG_JIT_COMPILATION_EVENTS) {
4719 mono_profiler_set_jit_done_callback (handle, method_jitted);
4720 mono_profiler_set_jit_code_buffer_callback (handle, code_buffer_new);
4723 if (config.effective_mask & PROFLOG_EXCEPTION_EVENTS) {
4724 mono_profiler_set_exception_throw_callback (handle, throw_exc);
4725 mono_profiler_set_exception_clause_callback (handle, clause_exc);
4728 if (config.effective_mask & PROFLOG_ALLOCATION_EVENTS) {
4729 mono_profiler_enable_allocations ();
4730 mono_profiler_set_gc_allocation_callback (handle, gc_alloc);
4733 //PROFLOG_GC_EVENTS is mandatory
4734 //PROFLOG_THREAD_EVENTS is mandatory
4736 if (config.effective_mask & PROFLOG_CALL_EVENTS) {
4737 mono_profiler_set_call_instrumentation_filter_callback (handle, method_filter);
4738 mono_profiler_set_method_enter_callback (handle, method_enter);
4739 mono_profiler_set_method_leave_callback (handle, method_leave);
4740 mono_profiler_set_method_exception_leave_callback (handle, method_exc_leave);
4743 if (config.effective_mask & PROFLOG_INS_COVERAGE_EVENTS)
4744 mono_profiler_set_coverage_filter_callback (handle, coverage_filter);
4746 if (config.effective_mask & PROFLOG_SAMPLING_EVENTS) {
4747 mono_profiler_enable_sampling (handle);
4749 if (!mono_profiler_set_sample_mode (handle, config.sampling_mode, config.sample_freq))
4750 g_warning ("Another profiler controls sampling parameters; the log profiler will not be able to modify them");
4752 mono_profiler_set_sample_hit_callback (handle, mono_sample_hit);
4755 if (config.effective_mask & PROFLOG_MONITOR_EVENTS) {
4756 mono_profiler_set_monitor_contention_callback (handle, monitor_contention);
4757 mono_profiler_set_monitor_acquired_callback (handle, monitor_acquired);
4758 mono_profiler_set_monitor_failed_callback (handle, monitor_failed);
4761 if (config.effective_mask & PROFLOG_GC_MOVES_EVENTS)
4762 mono_profiler_set_gc_moves_callback (handle, gc_moves);
4764 if (config.effective_mask & PROFLOG_GC_ROOT_EVENTS)
4765 mono_profiler_set_gc_roots_callback (handle, gc_roots);
4767 if (config.effective_mask & PROFLOG_CONTEXT_EVENTS) {
4768 mono_profiler_set_context_loaded_callback (handle, context_loaded);
4769 mono_profiler_set_context_unloaded_callback (handle, context_unloaded);
4772 if (config.effective_mask & PROFLOG_FINALIZATION_EVENTS) {
4773 mono_profiler_set_gc_finalizing_callback (handle, finalize_begin);
4774 mono_profiler_set_gc_finalized_callback (handle, finalize_end);
4775 mono_profiler_set_gc_finalizing_object_callback (handle, finalize_object_begin);
4776 mono_profiler_set_gc_finalized_object_callback (handle, finalize_object_end);
4777 } else if (ENABLED (PROFLOG_HEAPSHOT_FEATURE) && config.hs_mode_ondemand) {
4778 //On Demand heapshot uses the finalizer thread to force a collection and thus a heapshot
4779 mono_profiler_set_gc_finalized_callback (handle, finalize_end);
4782 //PROFLOG_COUNTER_EVENTS is a pseudo event controled by the no_counters global var
4784 if (config.effective_mask & PROFLOG_GC_HANDLE_EVENTS) {
4785 mono_profiler_set_gc_handle_created_callback (handle, gc_handle_created);
4786 mono_profiler_set_gc_handle_deleted_callback (handle, gc_handle_deleted);