2 * mono-profiler-log.c: mono log profiler
5 * Paolo Molaro (lupus@ximian.com)
6 * Alex Rønne Petersen (alexrp@xamarin.com)
8 * Copyright 2010 Novell, Inc (http://www.novell.com)
9 * Copyright 2011 Xamarin Inc (http://www.xamarin.com)
10 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
14 #include <mono/metadata/assembly.h>
15 #include <mono/metadata/debug-helpers.h>
16 #include "../metadata/metadata-internals.h"
17 #include <mono/metadata/mono-config.h>
18 #include <mono/metadata/mono-gc.h>
19 #include <mono/metadata/mono-perfcounters.h>
20 #include <mono/utils/atomic.h>
21 #include <mono/utils/hazard-pointer.h>
22 #include <mono/utils/lock-free-alloc.h>
23 #include <mono/utils/lock-free-queue.h>
24 #include <mono/utils/mono-conc-hashtable.h>
25 #include <mono/utils/mono-counters.h>
26 #include <mono/utils/mono-linked-list-set.h>
27 #include <mono/utils/mono-membar.h>
28 #include <mono/utils/mono-mmap.h>
29 #include <mono/utils/mono-os-mutex.h>
30 #include <mono/utils/mono-os-semaphore.h>
31 #include <mono/utils/mono-threads.h>
32 #include <mono/utils/mono-threads-api.h>
45 #if defined(__APPLE__)
46 #include <mach/mach_time.h>
48 #include <netinet/in.h>
49 #ifdef HAVE_SYS_MMAN_H
52 #include <sys/socket.h>
53 #if defined (HAVE_SYS_ZLIB)
57 #define BUFFER_SIZE (4096 * 16)
59 /* Worst-case size in bytes of a 64-bit value encoded with LEB128. */
60 #define LEB128_SIZE 10
62 /* Size of a value encoded as a single byte. */
63 #undef BYTE_SIZE // mach/i386/vm_param.h on OS X defines this to 8, but it isn't used for anything.
66 /* Size in bytes of the event prefix (ID + time). */
67 #define EVENT_SIZE (BYTE_SIZE + LEB128_SIZE)
69 static volatile gint32 runtime_inited;
70 static volatile gint32 in_shutdown;
72 static ProfilerConfig config;
73 static int nocalls = 0;
74 static int notraces = 0;
75 static int use_zip = 0;
76 static int do_report = 0;
77 static int do_heap_shot = 0;
78 static int max_call_depth = 0;
79 static int command_port = 0;
80 static int heapshot_requested = 0;
81 static int do_mono_sample = 0;
82 static int do_debug = 0;
83 static int do_coverage = 0;
84 static gboolean no_counters = FALSE;
85 static gboolean only_coverage = FALSE;
86 static gboolean debug_coverage = FALSE;
87 static int max_allocated_sample_hits;
89 #define ENABLED(EVT) (config.effective_mask & (EVT))
91 // Statistics for internal profiler data structures.
92 static gint32 sample_allocations_ctr,
93 buffer_allocations_ctr;
95 // Statistics for profiler events.
96 static gint32 sync_points_ctr,
105 gc_handle_creations_ctr,
106 gc_handle_deletions_ctr,
109 finalize_object_begins_ctr,
110 finalize_object_ends_ctr,
114 assembly_unloads_ctr,
119 method_exception_exits_ctr,
122 exception_throws_ctr,
123 exception_clauses_ctr,
136 counter_descriptors_ctr,
138 perfcounter_descriptors_ctr,
139 perfcounter_samples_ctr,
140 coverage_methods_ctr,
141 coverage_statements_ctr,
142 coverage_classes_ctr,
143 coverage_assemblies_ctr;
145 static MonoLinkedListSet profiler_thread_list;
151 * The file is composed by a header followed by 0 or more buffers.
152 * Each buffer contains events that happened on a thread: for a given thread
153 * buffers that appear later in the file are guaranteed to contain events
154 * that happened later in time. Buffers from separate threads could be interleaved,
156 * Buffers are not required to be aligned.
159 * [id: 4 bytes] constant value: LOG_HEADER_ID
160 * [major: 1 byte] [minor: 1 byte] major and minor version of the log profiler
161 * [format: 1 byte] version of the data format for the rest of the file
162 * [ptrsize: 1 byte] size in bytes of a pointer in the profiled program
163 * [startup time: 8 bytes] time in milliseconds since the unix epoch when the program started
164 * [timer overhead: 4 bytes] approximate overhead in nanoseconds of the timer
165 * [flags: 4 bytes] file format flags, should be 0 for now
166 * [pid: 4 bytes] pid of the profiled process
167 * [port: 2 bytes] tcp port for server if != 0
168 * [args size: 4 bytes] size of args
169 * [args: string] arguments passed to the profiler
170 * [arch size: 4 bytes] size of arch
171 * [arch: string] architecture the profiler is running on
172 * [os size: 4 bytes] size of os
173 * [os: string] operating system the profiler is running on
175 * The multiple byte integers are in little-endian format.
178 * [buffer header] [event]*
179 * Buffers have a fixed-size header followed by 0 or more bytes of event data.
180 * Timing information and other values in the event data are usually stored
181 * as uleb128 or sleb128 integers. To save space, as noted for each item below,
182 * some data is represented as a difference between the actual value and
183 * either the last value of the same type (like for timing information) or
184 * as the difference from a value stored in a buffer header.
186 * For timing information the data is stored as uleb128, since timing
187 * increases in a monotonic way in each thread: the value is the number of
188 * nanoseconds to add to the last seen timing data in a buffer. The first value
189 * in a buffer will be calculated from the time_base field in the buffer head.
191 * Object or heap sizes are stored as uleb128.
192 * Pointer differences are stored as sleb128, instead.
194 * If an unexpected value is found, the rest of the buffer should be ignored,
195 * as generally the later values need the former to be interpreted correctly.
197 * buffer header format:
198 * [bufid: 4 bytes] constant value: BUF_ID
199 * [len: 4 bytes] size of the data following the buffer header
200 * [time_base: 8 bytes] time base in nanoseconds since an unspecified epoch
201 * [ptr_base: 8 bytes] base value for pointers
202 * [obj_base: 8 bytes] base value for object addresses
203 * [thread id: 8 bytes] system-specific thread ID (pthread_t for example)
204 * [method_base: 8 bytes] base value for MonoMethod pointers
207 * [extended info: upper 4 bits] [type: lower 4 bits]
208 * [time diff: uleb128] nanoseconds since last timing
210 * The data that follows depends on type and the extended info.
211 * Type is one of the enum values in mono-profiler-log.h: TYPE_ALLOC, TYPE_GC,
212 * TYPE_METADATA, TYPE_METHOD, TYPE_EXCEPTION, TYPE_MONITOR, TYPE_HEAP.
213 * The extended info bits are interpreted based on type, see
214 * each individual event description below.
215 * strings are represented as a 0-terminated utf8 sequence.
218 * [num: uleb128] number of frames following
219 * [frame: sleb128]* mum MonoMethod* as a pointer difference from the last such
220 * pointer or the buffer method_base
224 * exinfo: zero or TYPE_ALLOC_BT
225 * [ptr: sleb128] class as a byte difference from ptr_base
226 * [obj: sleb128] object address as a byte difference from obj_base
227 * [size: uleb128] size of the object in the heap
228 * If exinfo == TYPE_ALLOC_BT, a backtrace follows.
232 * exinfo: one of TYPE_GC_EVENT, TYPE_GC_RESIZE, TYPE_GC_MOVE, TYPE_GC_HANDLE_CREATED[_BT],
233 * TYPE_GC_HANDLE_DESTROYED[_BT], TYPE_GC_FINALIZE_START, TYPE_GC_FINALIZE_END,
234 * TYPE_GC_FINALIZE_OBJECT_START, TYPE_GC_FINALIZE_OBJECT_END
235 * if exinfo == TYPE_GC_RESIZE
236 * [heap_size: uleb128] new heap size
237 * if exinfo == TYPE_GC_EVENT
238 * [event type: byte] GC event (MONO_GC_EVENT_* from profiler.h)
239 * [generation: byte] GC generation event refers to
240 * if exinfo == TYPE_GC_MOVE
241 * [num_objects: uleb128] number of object moves that follow
242 * [objaddr: sleb128]+ num_objects object pointer differences from obj_base
243 * num is always an even number: the even items are the old
244 * addresses, the odd numbers are the respective new object addresses
245 * if exinfo == TYPE_GC_HANDLE_CREATED[_BT]
246 * [handle_type: uleb128] GC handle type (System.Runtime.InteropServices.GCHandleType)
247 * upper bits reserved as flags
248 * [handle: uleb128] GC handle value
249 * [objaddr: sleb128] object pointer differences from obj_base
250 * If exinfo == TYPE_GC_HANDLE_CREATED_BT, a backtrace follows.
251 * if exinfo == TYPE_GC_HANDLE_DESTROYED[_BT]
252 * [handle_type: uleb128] GC handle type (System.Runtime.InteropServices.GCHandleType)
253 * upper bits reserved as flags
254 * [handle: uleb128] GC handle value
255 * If exinfo == TYPE_GC_HANDLE_DESTROYED_BT, a backtrace follows.
256 * if exinfo == TYPE_GC_FINALIZE_OBJECT_{START,END}
257 * [object: sleb128] the object as a difference from obj_base
259 * type metadata format:
260 * type: TYPE_METADATA
261 * exinfo: one of: TYPE_END_LOAD, TYPE_END_UNLOAD (optional for TYPE_THREAD and TYPE_DOMAIN)
262 * [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] MONO_PROFILER_MONITOR_{CONTENTION,FAIL,DONE}
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 {
643 #if defined (HAVE_SYS_ZLIB)
647 uint64_t startup_time;
652 MonoNativeThreadId helper_thread;
653 MonoNativeThreadId writer_thread;
654 MonoNativeThreadId dumper_thread;
655 volatile gint32 run_writer_thread;
656 MonoLockFreeAllocSizeClass writer_entry_size_class;
657 MonoLockFreeAllocator writer_entry_allocator;
658 MonoLockFreeQueue writer_queue;
659 MonoSemType writer_queue_sem;
660 MonoConcurrentHashTable *method_table;
661 mono_mutex_t method_table_mutex;
662 volatile gint32 run_dumper_thread;
663 MonoLockFreeQueue dumper_queue;
664 MonoSemType dumper_queue_sem;
665 MonoLockFreeAllocSizeClass sample_size_class;
666 MonoLockFreeAllocator sample_allocator;
667 MonoLockFreeQueue sample_reuse_queue;
668 BinaryObject *binary_objects;
669 GPtrArray *coverage_filters;
673 MonoLockFreeQueueNode node;
678 #define WRITER_ENTRY_BLOCK_SIZE (mono_pagesize ())
687 pstrdup (const char *s)
689 int len = strlen (s) + 1;
690 char *p = (char *) g_malloc (len);
696 alloc_buffer (int size)
698 return mono_valloc (NULL, size, MONO_MMAP_READ | MONO_MMAP_WRITE | MONO_MMAP_ANON | MONO_MMAP_PRIVATE, MONO_MEM_ACCOUNT_PROFILER);
702 free_buffer (void *buf, int size)
704 mono_vfree (buf, size, MONO_MEM_ACCOUNT_PROFILER);
708 create_buffer (uintptr_t tid, int bytes)
710 LogBuffer* buf = (LogBuffer *) alloc_buffer (MAX (BUFFER_SIZE, bytes));
712 InterlockedIncrement (&buffer_allocations_ctr);
714 buf->size = BUFFER_SIZE;
715 buf->time_base = current_time ();
716 buf->last_time = buf->time_base;
717 buf->buf_end = (unsigned char *) buf + buf->size;
718 buf->cursor = buf->buf;
719 buf->thread_id = tid;
725 * Must be called with the reader lock held if thread is the current thread, or
726 * the exclusive lock if thread is a different thread. However, if thread is
727 * the current thread, and init_thread () was called with add_to_lls = FALSE,
728 * then no locking is necessary.
731 init_buffer_state (MonoProfilerThread *thread)
733 thread->buffer = create_buffer (thread->node.key, 0);
734 thread->methods = NULL;
738 clear_hazard_pointers (MonoThreadHazardPointers *hp)
740 mono_hazard_pointer_clear (hp, 0);
741 mono_hazard_pointer_clear (hp, 1);
742 mono_hazard_pointer_clear (hp, 2);
745 static MonoProfilerThread *
746 init_thread (MonoProfiler *prof, gboolean add_to_lls)
748 MonoProfilerThread *thread = PROF_TLS_GET ();
751 * Sometimes we may try to initialize a thread twice. One example is the
752 * main thread: We initialize it when setting up the profiler, but we will
753 * also get a thread_start () callback for it. Another example is when
754 * attaching new threads to the runtime: We may get a gc_alloc () callback
755 * for that thread's thread object (where we initialize it), soon followed
756 * by a thread_start () callback.
758 * These cases are harmless anyhow. Just return if we've already done the
759 * initialization work.
764 thread = g_malloc (sizeof (MonoProfilerThread));
765 thread->node.key = thread_id ();
766 thread->profiler = prof;
767 thread->attached = add_to_lls;
768 thread->call_depth = 0;
770 thread->ended = FALSE;
772 init_buffer_state (thread);
774 thread->small_id = mono_thread_info_register_small_id ();
777 * Some internal profiler threads don't need to be cleaned up
778 * by the main thread on shutdown.
781 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
782 g_assert (mono_lls_insert (&profiler_thread_list, hp, &thread->node) && "Why can't we insert the thread in the LLS?");
783 clear_hazard_pointers (hp);
786 PROF_TLS_SET (thread);
791 // Only valid if init_thread () was called with add_to_lls = FALSE.
793 deinit_thread (MonoProfilerThread *thread)
795 g_assert (!thread->attached && "Why are we manually freeing an attached thread?");
801 static MonoProfilerThread *
804 return init_thread (log_profiler, TRUE);
807 // Only valid if init_thread () was called with add_to_lls = FALSE.
809 ensure_logbuf_unsafe (MonoProfilerThread *thread, int bytes)
811 LogBuffer *old = thread->buffer;
813 if (old && old->cursor + bytes < old->buf_end)
816 LogBuffer *new_ = create_buffer (thread->node.key, bytes);
818 thread->buffer = new_;
824 * This is a reader/writer spin lock of sorts used to protect log buffers.
825 * When a thread modifies its own log buffer, it increments the reader
826 * count. When a thread wants to access log buffers of other threads, it
827 * takes the exclusive lock.
829 * `buffer_lock_state` holds the reader count in its lower 16 bits, and
830 * the small ID of the thread currently holding the exclusive (writer)
831 * lock in its upper 16 bits. Both can be zero. It's important that the
832 * whole lock state is a single word that can be read/written atomically
833 * to avoid race conditions where there could end up being readers while
834 * the writer lock is held.
836 * The lock is writer-biased. When a thread wants to take the exclusive
837 * lock, it increments `buffer_lock_exclusive_intent` which will make new
838 * readers spin until it's back to zero, then takes the exclusive lock
839 * once the reader count has reached zero. After releasing the exclusive
840 * lock, it decrements `buffer_lock_exclusive_intent`, which, when it
841 * reaches zero again, allows readers to increment the reader count.
843 * The writer bias is necessary because we take the exclusive lock in
844 * `gc_event ()` during STW. If the writer bias was not there, and a
845 * program had a large number of threads, STW-induced pauses could be
846 * significantly longer than they have to be. Also, we emit periodic
847 * sync points from the helper thread, which requires taking the
848 * exclusive lock, and we need those to arrive with a reasonably
849 * consistent frequency so that readers don't have to queue up too many
850 * events between sync points.
852 static volatile gint32 buffer_lock_state;
853 static volatile gint32 buffer_lock_exclusive_intent;
855 // Can be used recursively.
860 * If the thread holding the exclusive lock tries to modify the
861 * reader count, just make it a no-op. This way, we also avoid
862 * invoking the GC safe point macros below, which could break if
863 * done from a thread that is currently the initiator of STW.
865 * In other words, we rely on the fact that the GC thread takes
866 * the exclusive lock in the gc_event () callback when the world
869 if (InterlockedRead (&buffer_lock_state) != get_thread ()->small_id << 16) {
876 // Hold off if a thread wants to take the exclusive lock.
877 while (InterlockedRead (&buffer_lock_exclusive_intent))
878 mono_thread_info_yield ();
880 old = InterlockedRead (&buffer_lock_state);
882 // Is a thread holding the exclusive lock?
884 mono_thread_info_yield ();
889 } while (InterlockedCompareExchange (&buffer_lock_state, new_, old) != old);
894 mono_memory_barrier ();
900 mono_memory_barrier ();
902 gint32 state = InterlockedRead (&buffer_lock_state);
904 // See the comment in buffer_lock ().
905 if (state == PROF_TLS_GET ()->small_id << 16)
908 g_assert (state && "Why are we decrementing a zero reader count?");
909 g_assert (!(state >> 16) && "Why is the exclusive lock held?");
911 InterlockedDecrement (&buffer_lock_state);
914 // Cannot be used recursively.
916 buffer_lock_excl (void)
918 gint32 new_ = get_thread ()->small_id << 16;
920 g_assert (InterlockedRead (&buffer_lock_state) != new_ && "Why are we taking the exclusive lock twice?");
922 InterlockedIncrement (&buffer_lock_exclusive_intent);
926 while (InterlockedCompareExchange (&buffer_lock_state, new_, 0))
927 mono_thread_info_yield ();
931 mono_memory_barrier ();
935 buffer_unlock_excl (void)
937 mono_memory_barrier ();
939 gint32 state = InterlockedRead (&buffer_lock_state);
940 gint32 excl = state >> 16;
942 g_assert (excl && "Why is the exclusive lock not held?");
943 g_assert (excl == PROF_TLS_GET ()->small_id && "Why does another thread hold the exclusive lock?");
944 g_assert (!(state & 0xFFFF) && "Why are there readers when the exclusive lock is held?");
946 InterlockedWrite (&buffer_lock_state, 0);
947 InterlockedDecrement (&buffer_lock_exclusive_intent);
951 encode_uleb128 (uint64_t value, uint8_t *buf, uint8_t **endbuf)
956 uint8_t b = value & 0x7f;
959 if (value != 0) /* more bytes to come */
969 encode_sleb128 (intptr_t value, uint8_t *buf, uint8_t **endbuf)
972 int negative = (value < 0);
973 unsigned int size = sizeof (intptr_t) * 8;
981 /* the following is unnecessary if the
982 * implementation of >>= uses an arithmetic rather
983 * than logical shift for a signed left operand
987 value |= - ((intptr_t) 1 <<(size - 7));
989 /* sign bit of byte is second high order bit (0x40) */
990 if ((value == 0 && !(byte & 0x40)) ||
991 (value == -1 && (byte & 0x40)))
1003 emit_byte (LogBuffer *logbuffer, int value)
1005 logbuffer->cursor [0] = value;
1006 logbuffer->cursor++;
1008 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1012 emit_value (LogBuffer *logbuffer, int value)
1014 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
1016 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1020 emit_time (LogBuffer *logbuffer, uint64_t value)
1022 uint64_t tdiff = value - logbuffer->last_time;
1023 encode_uleb128 (tdiff, logbuffer->cursor, &logbuffer->cursor);
1024 logbuffer->last_time = value;
1026 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1030 emit_event_time (LogBuffer *logbuffer, int event, uint64_t time)
1032 emit_byte (logbuffer, event);
1033 emit_time (logbuffer, time);
1037 emit_event (LogBuffer *logbuffer, int event)
1039 emit_event_time (logbuffer, event, current_time ());
1043 emit_svalue (LogBuffer *logbuffer, int64_t value)
1045 encode_sleb128 (value, logbuffer->cursor, &logbuffer->cursor);
1047 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1051 emit_uvalue (LogBuffer *logbuffer, uint64_t value)
1053 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
1055 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1059 emit_ptr (LogBuffer *logbuffer, void *ptr)
1061 if (!logbuffer->ptr_base)
1062 logbuffer->ptr_base = (uintptr_t) ptr;
1064 emit_svalue (logbuffer, (intptr_t) ptr - logbuffer->ptr_base);
1066 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1070 emit_method_inner (LogBuffer *logbuffer, void *method)
1072 if (!logbuffer->method_base) {
1073 logbuffer->method_base = (intptr_t) method;
1074 logbuffer->last_method = (intptr_t) method;
1077 encode_sleb128 ((intptr_t) ((char *) method - (char *) logbuffer->last_method), logbuffer->cursor, &logbuffer->cursor);
1078 logbuffer->last_method = (intptr_t) method;
1080 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1084 register_method_local (MonoMethod *method, MonoJitInfo *ji)
1086 MonoProfilerThread *thread = get_thread ();
1088 if (!mono_conc_hashtable_lookup (thread->profiler->method_table, method)) {
1089 MethodInfo *info = (MethodInfo *) g_malloc (sizeof (MethodInfo));
1091 info->method = method;
1093 info->time = current_time ();
1097 GPtrArray *arr = thread->methods ? thread->methods : (thread->methods = g_ptr_array_new ());
1098 g_ptr_array_add (arr, info);
1105 emit_method (LogBuffer *logbuffer, MonoMethod *method)
1107 register_method_local (method, NULL);
1108 emit_method_inner (logbuffer, method);
1112 emit_obj (LogBuffer *logbuffer, void *ptr)
1114 if (!logbuffer->obj_base)
1115 logbuffer->obj_base = (uintptr_t) ptr >> 3;
1117 emit_svalue (logbuffer, ((uintptr_t) ptr >> 3) - logbuffer->obj_base);
1119 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1123 emit_string (LogBuffer *logbuffer, const char *str, size_t size)
1127 for (; i < size; i++) {
1130 emit_byte (logbuffer, str [i]);
1133 emit_byte (logbuffer, '\0');
1137 emit_double (LogBuffer *logbuffer, double value)
1140 unsigned char buffer[8];
1141 memcpy (buffer, &value, 8);
1142 #if G_BYTE_ORDER == G_BIG_ENDIAN
1143 for (i = 7; i >= 0; i--)
1145 for (i = 0; i < 8; i++)
1147 emit_byte (logbuffer, buffer[i]);
1151 write_int16 (char *buf, int32_t value)
1154 for (i = 0; i < 2; ++i) {
1162 write_int32 (char *buf, int32_t value)
1165 for (i = 0; i < 4; ++i) {
1173 write_int64 (char *buf, int64_t value)
1176 for (i = 0; i < 8; ++i) {
1184 write_header_string (char *p, const char *str)
1186 size_t len = strlen (str) + 1;
1188 p = write_int32 (p, len);
1195 dump_header (MonoProfiler *profiler)
1197 const char *args = profiler->args;
1198 const char *arch = mono_config_get_cpu ();
1199 const char *os = mono_config_get_os ();
1201 char *hbuf = g_malloc (
1202 sizeof (gint32) /* header id */ +
1203 sizeof (gint8) /* major version */ +
1204 sizeof (gint8) /* minor version */ +
1205 sizeof (gint8) /* data version */ +
1206 sizeof (gint8) /* word size */ +
1207 sizeof (gint64) /* startup time */ +
1208 sizeof (gint32) /* timer overhead */ +
1209 sizeof (gint32) /* flags */ +
1210 sizeof (gint32) /* process id */ +
1211 sizeof (gint16) /* command port */ +
1212 sizeof (gint32) + strlen (args) + 1 /* arguments */ +
1213 sizeof (gint32) + strlen (arch) + 1 /* architecture */ +
1214 sizeof (gint32) + strlen (os) + 1 /* operating system */
1218 p = write_int32 (p, LOG_HEADER_ID);
1219 *p++ = LOG_VERSION_MAJOR;
1220 *p++ = LOG_VERSION_MINOR;
1221 *p++ = LOG_DATA_VERSION;
1222 *p++ = sizeof (void *);
1223 p = write_int64 (p, ((uint64_t) time (NULL)) * 1000);
1224 p = write_int32 (p, timer_overhead);
1225 p = write_int32 (p, 0); /* flags */
1226 p = write_int32 (p, process_id ());
1227 p = write_int16 (p, profiler->command_port);
1228 p = write_header_string (p, args);
1229 p = write_header_string (p, arch);
1230 p = write_header_string (p, os);
1232 #if defined (HAVE_SYS_ZLIB)
1233 if (profiler->gzfile) {
1234 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1238 fwrite (hbuf, p - hbuf, 1, profiler->file);
1239 fflush (profiler->file);
1246 * Must be called with the reader lock held if thread is the current thread, or
1247 * the exclusive lock if thread is a different thread. However, if thread is
1248 * the current thread, and init_thread () was called with add_to_lls = FALSE,
1249 * then no locking is necessary.
1252 send_buffer (MonoProfilerThread *thread)
1254 WriterQueueEntry *entry = mono_lock_free_alloc (&thread->profiler->writer_entry_allocator);
1255 entry->methods = thread->methods;
1256 entry->buffer = thread->buffer;
1258 mono_lock_free_queue_node_init (&entry->node, FALSE);
1260 mono_lock_free_queue_enqueue (&thread->profiler->writer_queue, &entry->node);
1261 mono_os_sem_post (&thread->profiler->writer_queue_sem);
1265 free_thread (gpointer p)
1267 MonoProfilerThread *thread = p;
1269 if (!thread->ended) {
1271 * The thread is being cleaned up by the main thread during
1272 * shutdown. This typically happens for internal runtime
1273 * threads. We need to synthesize a thread end event.
1276 InterlockedIncrement (&thread_ends_ctr);
1278 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
1279 LogBuffer *buf = ensure_logbuf_unsafe (thread,
1280 EVENT_SIZE /* event */ +
1281 BYTE_SIZE /* type */ +
1282 LEB128_SIZE /* tid */
1285 emit_event (buf, TYPE_END_UNLOAD | TYPE_METADATA);
1286 emit_byte (buf, TYPE_THREAD);
1287 emit_ptr (buf, (void *) thread->node.key);
1291 send_buffer (thread);
1297 remove_thread (MonoProfilerThread *thread)
1299 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
1301 if (mono_lls_remove (&profiler_thread_list, hp, &thread->node))
1302 mono_thread_hazardous_try_free (thread, free_thread);
1304 clear_hazard_pointers (hp);
1308 dump_buffer (MonoProfiler *profiler, LogBuffer *buf)
1314 dump_buffer (profiler, buf->next);
1316 if (buf->cursor - buf->buf) {
1317 p = write_int32 (p, BUF_ID);
1318 p = write_int32 (p, buf->cursor - buf->buf);
1319 p = write_int64 (p, buf->time_base);
1320 p = write_int64 (p, buf->ptr_base);
1321 p = write_int64 (p, buf->obj_base);
1322 p = write_int64 (p, buf->thread_id);
1323 p = write_int64 (p, buf->method_base);
1325 #if defined (HAVE_SYS_ZLIB)
1326 if (profiler->gzfile) {
1327 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1328 gzwrite (profiler->gzfile, buf->buf, buf->cursor - buf->buf);
1332 fwrite (hbuf, p - hbuf, 1, profiler->file);
1333 fwrite (buf->buf, buf->cursor - buf->buf, 1, profiler->file);
1334 fflush (profiler->file);
1338 free_buffer (buf, buf->size);
1342 dump_buffer_threadless (MonoProfiler *profiler, LogBuffer *buf)
1344 for (LogBuffer *iter = buf; iter; iter = iter->next)
1345 iter->thread_id = 0;
1347 dump_buffer (profiler, buf);
1350 // Only valid if init_thread () was called with add_to_lls = FALSE.
1352 send_log_unsafe (gboolean if_needed)
1354 MonoProfilerThread *thread = PROF_TLS_GET ();
1356 if (!if_needed || (if_needed && thread->buffer->next)) {
1357 if (!thread->attached)
1358 for (LogBuffer *iter = thread->buffer; iter; iter = iter->next)
1359 iter->thread_id = 0;
1361 send_buffer (thread);
1362 init_buffer_state (thread);
1366 // Assumes that the exclusive lock is held.
1368 sync_point_flush (void)
1370 g_assert (InterlockedRead (&buffer_lock_state) == PROF_TLS_GET ()->small_id << 16 && "Why don't we hold the exclusive lock?");
1372 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
1373 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
1375 send_buffer (thread);
1376 init_buffer_state (thread);
1377 } MONO_LLS_FOREACH_SAFE_END
1380 // Assumes that the exclusive lock is held.
1382 sync_point_mark (MonoProfilerSyncPointType type)
1384 g_assert (InterlockedRead (&buffer_lock_state) == PROF_TLS_GET ()->small_id << 16 && "Why don't we hold the exclusive lock?");
1386 ENTER_LOG (&sync_points_ctr, logbuffer,
1387 EVENT_SIZE /* event */ +
1388 LEB128_SIZE /* type */
1391 emit_event (logbuffer, TYPE_META | TYPE_SYNC_POINT);
1392 emit_byte (logbuffer, type);
1394 EXIT_LOG_EXPLICIT (NO_SEND);
1396 send_log_unsafe (FALSE);
1399 // Assumes that the exclusive lock is held.
1401 sync_point (MonoProfilerSyncPointType type)
1403 sync_point_flush ();
1404 sync_point_mark (type);
1408 gc_reference (MonoObject *obj, MonoClass *klass, uintptr_t size, uintptr_t num, MonoObject **refs, uintptr_t *offsets, void *data)
1410 /* account for object alignment in the heap */
1414 ENTER_LOG (&heap_objects_ctr, logbuffer,
1415 EVENT_SIZE /* event */ +
1416 LEB128_SIZE /* obj */ +
1417 LEB128_SIZE /* klass */ +
1418 LEB128_SIZE /* size */ +
1419 LEB128_SIZE /* num */ +
1421 LEB128_SIZE /* offset */ +
1422 LEB128_SIZE /* ref */
1426 emit_event (logbuffer, TYPE_HEAP_OBJECT | TYPE_HEAP);
1427 emit_obj (logbuffer, obj);
1428 emit_ptr (logbuffer, klass);
1429 emit_value (logbuffer, size);
1430 emit_value (logbuffer, num);
1432 uintptr_t last_offset = 0;
1434 for (int i = 0; i < num; ++i) {
1435 emit_value (logbuffer, offsets [i] - last_offset);
1436 last_offset = offsets [i];
1437 emit_obj (logbuffer, refs [i]);
1440 EXIT_LOG_EXPLICIT (DO_SEND);
1445 static unsigned int hs_mode_ms = 0;
1446 static unsigned int hs_mode_gc = 0;
1447 static unsigned int hs_mode_ondemand = 0;
1448 static unsigned int gc_count = 0;
1449 static uint64_t last_hs_time = 0;
1450 static gboolean do_heap_walk = FALSE;
1451 static gboolean ignore_heap_events;
1454 gc_roots (MonoProfiler *prof, int num, void **objects, int *root_types, uintptr_t *extra_info)
1456 if (ignore_heap_events)
1459 ENTER_LOG (&heap_roots_ctr, logbuffer,
1460 EVENT_SIZE /* event */ +
1461 LEB128_SIZE /* num */ +
1462 LEB128_SIZE /* collections */ +
1464 LEB128_SIZE /* object */ +
1465 LEB128_SIZE /* root type */ +
1466 LEB128_SIZE /* extra info */
1470 emit_event (logbuffer, TYPE_HEAP_ROOT | TYPE_HEAP);
1471 emit_value (logbuffer, num);
1472 emit_value (logbuffer, mono_gc_collection_count (mono_gc_max_generation ()));
1474 for (int i = 0; i < num; ++i) {
1475 emit_obj (logbuffer, objects [i]);
1476 emit_byte (logbuffer, root_types [i]);
1477 emit_value (logbuffer, extra_info [i]);
1480 EXIT_LOG_EXPLICIT (DO_SEND);
1485 trigger_on_demand_heapshot (void)
1487 if (heapshot_requested)
1488 mono_gc_collect (mono_gc_max_generation ());
1491 #define ALL_GC_EVENTS_MASK (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_EVENTS | PROFLOG_HEAPSHOT_FEATURE)
1494 gc_event (MonoProfiler *profiler, MonoGCEvent ev, int generation)
1496 if (ev == MONO_GC_EVENT_START) {
1497 uint64_t now = current_time ();
1499 if (hs_mode_ms && (now - last_hs_time) / 1000 * 1000 >= hs_mode_ms)
1500 do_heap_walk = TRUE;
1501 else if (hs_mode_gc && !(gc_count % hs_mode_gc))
1502 do_heap_walk = TRUE;
1503 else if (hs_mode_ondemand)
1504 do_heap_walk = heapshot_requested;
1505 else if (!hs_mode_ms && !hs_mode_gc && generation == mono_gc_max_generation ())
1506 do_heap_walk = TRUE;
1508 //If using heapshot, ignore events for collections we don't care
1509 if (ENABLED (PROFLOG_HEAPSHOT_FEATURE)) {
1510 // Ignore events generated during the collection itself (IE GC ROOTS)
1511 ignore_heap_events = !do_heap_walk;
1516 if (ENABLED (PROFLOG_GC_EVENTS)) {
1517 ENTER_LOG (&gc_events_ctr, logbuffer,
1518 EVENT_SIZE /* event */ +
1519 BYTE_SIZE /* gc event */ +
1520 BYTE_SIZE /* generation */
1523 emit_event (logbuffer, TYPE_GC_EVENT | TYPE_GC);
1524 emit_byte (logbuffer, ev);
1525 emit_byte (logbuffer, generation);
1527 EXIT_LOG_EXPLICIT (NO_SEND);
1531 case MONO_GC_EVENT_START:
1532 if (generation == mono_gc_max_generation ())
1536 case MONO_GC_EVENT_PRE_STOP_WORLD_LOCKED:
1538 * Ensure that no thread can be in the middle of writing to
1539 * a buffer when the world stops...
1541 buffer_lock_excl ();
1543 case MONO_GC_EVENT_POST_STOP_WORLD:
1545 * ... So that we now have a consistent view of all buffers.
1546 * This allows us to flush them. We need to do this because
1547 * they may contain object allocation events that need to be
1548 * committed to the log file before any object move events
1549 * that will be produced during this GC.
1551 if (ENABLED (ALL_GC_EVENTS_MASK))
1552 sync_point (SYNC_POINT_WORLD_STOP);
1555 * All heap events are surrounded by a HEAP_START and a HEAP_ENV event.
1556 * Right now, that's the case for GC Moves, GC Roots or heapshots.
1558 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1559 ENTER_LOG (&heap_starts_ctr, logbuffer,
1560 EVENT_SIZE /* event */
1563 emit_event (logbuffer, TYPE_HEAP_START | TYPE_HEAP);
1565 EXIT_LOG_EXPLICIT (DO_SEND);
1569 case MONO_GC_EVENT_PRE_START_WORLD:
1570 if (do_heap_shot && do_heap_walk)
1571 mono_gc_walk_heap (0, gc_reference, NULL);
1573 /* Matching HEAP_END to the HEAP_START from above */
1574 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1575 ENTER_LOG (&heap_ends_ctr, logbuffer,
1576 EVENT_SIZE /* event */
1579 emit_event (logbuffer, TYPE_HEAP_END | TYPE_HEAP);
1581 EXIT_LOG_EXPLICIT (DO_SEND);
1584 if (do_heap_shot && do_heap_walk) {
1585 do_heap_walk = FALSE;
1586 heapshot_requested = 0;
1587 last_hs_time = current_time ();
1591 * Similarly, we must now make sure that any object moves
1592 * written to the GC thread's buffer are flushed. Otherwise,
1593 * object allocation events for certain addresses could come
1594 * after the move events that made those addresses available.
1596 if (ENABLED (ALL_GC_EVENTS_MASK))
1597 sync_point_mark (SYNC_POINT_WORLD_START);
1599 case MONO_GC_EVENT_POST_START_WORLD_UNLOCKED:
1601 * Finally, it is safe to allow other threads to write to
1602 * their buffers again.
1604 buffer_unlock_excl ();
1612 gc_resize (MonoProfiler *profiler, int64_t new_size)
1614 ENTER_LOG (&gc_resizes_ctr, logbuffer,
1615 EVENT_SIZE /* event */ +
1616 LEB128_SIZE /* new size */
1619 emit_event (logbuffer, TYPE_GC_RESIZE | TYPE_GC);
1620 emit_value (logbuffer, new_size);
1622 EXIT_LOG_EXPLICIT (DO_SEND);
1627 MonoMethod* methods [MAX_FRAMES];
1628 int32_t il_offsets [MAX_FRAMES];
1629 int32_t native_offsets [MAX_FRAMES];
1632 static int num_frames = MAX_FRAMES;
1635 walk_stack (MonoMethod *method, int32_t native_offset, int32_t il_offset, mono_bool managed, void* data)
1637 FrameData *frame = (FrameData *)data;
1638 if (method && frame->count < num_frames) {
1639 frame->il_offsets [frame->count] = il_offset;
1640 frame->native_offsets [frame->count] = native_offset;
1641 frame->methods [frame->count++] = method;
1642 //printf ("In %d %s at %d (native: %d)\n", frame->count, mono_method_get_name (method), il_offset, native_offset);
1644 return frame->count == num_frames;
1648 * a note about stack walks: they can cause more profiler events to fire,
1649 * so we need to make sure they don't happen after we started emitting an
1650 * event, hence the collect_bt/emit_bt split.
1653 collect_bt (FrameData *data)
1656 mono_stack_walk_no_il (walk_stack, data);
1660 emit_bt (MonoProfiler *prof, LogBuffer *logbuffer, FrameData *data)
1662 if (data->count > num_frames)
1663 printf ("bad num frames: %d\n", data->count);
1665 emit_value (logbuffer, data->count);
1668 emit_method (logbuffer, data->methods [--data->count]);
1672 gc_alloc (MonoProfiler *prof, MonoObject *obj, MonoClass *klass)
1674 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_ALLOC_BT : 0;
1676 uintptr_t len = mono_object_get_size (obj);
1677 /* account for object alignment in the heap */
1684 ENTER_LOG (&gc_allocs_ctr, logbuffer,
1685 EVENT_SIZE /* event */ +
1686 LEB128_SIZE /* klass */ +
1687 LEB128_SIZE /* obj */ +
1688 LEB128_SIZE /* size */ +
1690 LEB128_SIZE /* count */ +
1692 LEB128_SIZE /* method */
1697 emit_event (logbuffer, do_bt | TYPE_ALLOC);
1698 emit_ptr (logbuffer, klass);
1699 emit_obj (logbuffer, obj);
1700 emit_value (logbuffer, len);
1703 emit_bt (prof, logbuffer, &data);
1709 gc_moves (MonoProfiler *prof, void **objects, int num)
1711 ENTER_LOG (&gc_moves_ctr, logbuffer,
1712 EVENT_SIZE /* event */ +
1713 LEB128_SIZE /* num */ +
1715 LEB128_SIZE /* object */
1719 emit_event (logbuffer, TYPE_GC_MOVE | TYPE_GC);
1720 emit_value (logbuffer, num);
1722 for (int i = 0; i < num; ++i)
1723 emit_obj (logbuffer, objects [i]);
1725 EXIT_LOG_EXPLICIT (DO_SEND);
1729 gc_handle (MonoProfiler *prof, int op, int type, uintptr_t handle, MonoObject *obj)
1731 int do_bt = nocalls && InterlockedRead (&runtime_inited) && !notraces;
1737 gint32 *ctr = op == MONO_PROFILER_GC_HANDLE_CREATED ? &gc_handle_creations_ctr : &gc_handle_deletions_ctr;
1739 ENTER_LOG (ctr, logbuffer,
1740 EVENT_SIZE /* event */ +
1741 LEB128_SIZE /* type */ +
1742 LEB128_SIZE /* handle */ +
1743 (op == MONO_PROFILER_GC_HANDLE_CREATED ? (
1744 LEB128_SIZE /* obj */
1747 LEB128_SIZE /* count */ +
1749 LEB128_SIZE /* method */
1754 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1755 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_CREATED_BT : TYPE_GC_HANDLE_CREATED) | TYPE_GC);
1756 else if (op == MONO_PROFILER_GC_HANDLE_DESTROYED)
1757 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_DESTROYED_BT : TYPE_GC_HANDLE_DESTROYED) | TYPE_GC);
1759 g_assert_not_reached ();
1761 emit_value (logbuffer, type);
1762 emit_value (logbuffer, handle);
1764 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1765 emit_obj (logbuffer, obj);
1768 emit_bt (prof, logbuffer, &data);
1774 finalize_begin (MonoProfiler *prof)
1776 ENTER_LOG (&finalize_begins_ctr, buf,
1777 EVENT_SIZE /* event */
1780 emit_event (buf, TYPE_GC_FINALIZE_START | TYPE_GC);
1786 finalize_end (MonoProfiler *prof)
1788 trigger_on_demand_heapshot ();
1789 if (ENABLED (PROFLOG_FINALIZATION_EVENTS)) {
1790 ENTER_LOG (&finalize_ends_ctr, buf,
1791 EVENT_SIZE /* event */
1794 emit_event (buf, TYPE_GC_FINALIZE_END | TYPE_GC);
1801 finalize_object_begin (MonoProfiler *prof, MonoObject *obj)
1803 ENTER_LOG (&finalize_object_begins_ctr, buf,
1804 EVENT_SIZE /* event */ +
1805 LEB128_SIZE /* obj */
1808 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_START | TYPE_GC);
1809 emit_obj (buf, obj);
1815 finalize_object_end (MonoProfiler *prof, MonoObject *obj)
1817 ENTER_LOG (&finalize_object_ends_ctr, buf,
1818 EVENT_SIZE /* event */ +
1819 LEB128_SIZE /* obj */
1822 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_END | TYPE_GC);
1823 emit_obj (buf, obj);
1829 push_nesting (char *p, MonoClass *klass)
1834 nesting = mono_class_get_nesting_type (klass);
1836 p = push_nesting (p, nesting);
1840 name = mono_class_get_name (klass);
1841 nspace = mono_class_get_namespace (klass);
1844 p += strlen (nspace);
1854 type_name (MonoClass *klass)
1858 push_nesting (buf, klass);
1859 p = (char *) g_malloc (strlen (buf) + 1);
1865 image_loaded (MonoProfiler *prof, MonoImage *image, int result)
1867 if (result != MONO_PROFILE_OK)
1870 const char *name = mono_image_get_filename (image);
1871 int nlen = strlen (name) + 1;
1873 ENTER_LOG (&image_loads_ctr, logbuffer,
1874 EVENT_SIZE /* event */ +
1875 BYTE_SIZE /* type */ +
1876 LEB128_SIZE /* image */ +
1880 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1881 emit_byte (logbuffer, TYPE_IMAGE);
1882 emit_ptr (logbuffer, image);
1883 memcpy (logbuffer->cursor, name, nlen);
1884 logbuffer->cursor += nlen;
1890 image_unloaded (MonoProfiler *prof, MonoImage *image)
1892 const char *name = mono_image_get_filename (image);
1893 int nlen = strlen (name) + 1;
1895 ENTER_LOG (&image_unloads_ctr, logbuffer,
1896 EVENT_SIZE /* event */ +
1897 BYTE_SIZE /* type */ +
1898 LEB128_SIZE /* image */ +
1902 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1903 emit_byte (logbuffer, TYPE_IMAGE);
1904 emit_ptr (logbuffer, image);
1905 memcpy (logbuffer->cursor, name, nlen);
1906 logbuffer->cursor += nlen;
1912 assembly_loaded (MonoProfiler *prof, MonoAssembly *assembly, int result)
1914 if (result != MONO_PROFILE_OK)
1917 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1918 int nlen = strlen (name) + 1;
1919 MonoImage *image = mono_assembly_get_image (assembly);
1921 ENTER_LOG (&assembly_loads_ctr, logbuffer,
1922 EVENT_SIZE /* event */ +
1923 BYTE_SIZE /* type */ +
1924 LEB128_SIZE /* assembly */ +
1925 LEB128_SIZE /* image */ +
1929 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1930 emit_byte (logbuffer, TYPE_ASSEMBLY);
1931 emit_ptr (logbuffer, assembly);
1932 emit_ptr (logbuffer, image);
1933 memcpy (logbuffer->cursor, name, nlen);
1934 logbuffer->cursor += nlen;
1942 assembly_unloaded (MonoProfiler *prof, MonoAssembly *assembly)
1944 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1945 int nlen = strlen (name) + 1;
1946 MonoImage *image = mono_assembly_get_image (assembly);
1948 ENTER_LOG (&assembly_unloads_ctr, logbuffer,
1949 EVENT_SIZE /* event */ +
1950 BYTE_SIZE /* type */ +
1951 LEB128_SIZE /* assembly */ +
1952 LEB128_SIZE /* image */ +
1956 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1957 emit_byte (logbuffer, TYPE_ASSEMBLY);
1958 emit_ptr (logbuffer, assembly);
1959 emit_ptr (logbuffer, image);
1960 memcpy (logbuffer->cursor, name, nlen);
1961 logbuffer->cursor += nlen;
1969 class_loaded (MonoProfiler *prof, MonoClass *klass, int result)
1971 if (result != MONO_PROFILE_OK)
1976 if (InterlockedRead (&runtime_inited))
1977 name = mono_type_get_name (mono_class_get_type (klass));
1979 name = type_name (klass);
1981 int nlen = strlen (name) + 1;
1982 MonoImage *image = mono_class_get_image (klass);
1984 ENTER_LOG (&class_loads_ctr, logbuffer,
1985 EVENT_SIZE /* event */ +
1986 BYTE_SIZE /* type */ +
1987 LEB128_SIZE /* klass */ +
1988 LEB128_SIZE /* image */ +
1992 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1993 emit_byte (logbuffer, TYPE_CLASS);
1994 emit_ptr (logbuffer, klass);
1995 emit_ptr (logbuffer, image);
1996 memcpy (logbuffer->cursor, name, nlen);
1997 logbuffer->cursor += nlen;
2008 class_unloaded (MonoProfiler *prof, MonoClass *klass)
2012 if (InterlockedRead (&runtime_inited))
2013 name = mono_type_get_name (mono_class_get_type (klass));
2015 name = type_name (klass);
2017 int nlen = strlen (name) + 1;
2018 MonoImage *image = mono_class_get_image (klass);
2020 ENTER_LOG (&class_unloads_ctr, logbuffer,
2021 EVENT_SIZE /* event */ +
2022 BYTE_SIZE /* type */ +
2023 LEB128_SIZE /* klass */ +
2024 LEB128_SIZE /* image */ +
2028 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2029 emit_byte (logbuffer, TYPE_CLASS);
2030 emit_ptr (logbuffer, klass);
2031 emit_ptr (logbuffer, image);
2032 memcpy (logbuffer->cursor, name, nlen);
2033 logbuffer->cursor += nlen;
2043 static void process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method);
2046 method_enter (MonoProfiler *prof, MonoMethod *method)
2048 process_method_enter_coverage (prof, method);
2050 if (!only_coverage && get_thread ()->call_depth++ <= max_call_depth) {
2051 ENTER_LOG (&method_entries_ctr, logbuffer,
2052 EVENT_SIZE /* event */ +
2053 LEB128_SIZE /* method */
2056 emit_event (logbuffer, TYPE_ENTER | TYPE_METHOD);
2057 emit_method (logbuffer, method);
2064 method_leave (MonoProfiler *prof, MonoMethod *method)
2066 if (!only_coverage && --get_thread ()->call_depth <= max_call_depth) {
2067 ENTER_LOG (&method_exits_ctr, logbuffer,
2068 EVENT_SIZE /* event */ +
2069 LEB128_SIZE /* method */
2072 emit_event (logbuffer, TYPE_LEAVE | TYPE_METHOD);
2073 emit_method (logbuffer, method);
2080 method_exc_leave (MonoProfiler *prof, MonoMethod *method)
2082 if (!only_coverage && !nocalls && --get_thread ()->call_depth <= max_call_depth) {
2083 ENTER_LOG (&method_exception_exits_ctr, logbuffer,
2084 EVENT_SIZE /* event */ +
2085 LEB128_SIZE /* method */
2088 emit_event (logbuffer, TYPE_EXC_LEAVE | TYPE_METHOD);
2089 emit_method (logbuffer, method);
2096 method_jitted (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *ji, int result)
2098 if (result != MONO_PROFILE_OK)
2101 register_method_local (method, ji);
2105 code_buffer_new (MonoProfiler *prof, void *buffer, int size, MonoProfilerCodeBufferType type, void *data)
2110 if (type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE) {
2111 name = (char *) data;
2112 nlen = strlen (name) + 1;
2118 ENTER_LOG (&code_buffers_ctr, logbuffer,
2119 EVENT_SIZE /* event */ +
2120 BYTE_SIZE /* type */ +
2121 LEB128_SIZE /* buffer */ +
2122 LEB128_SIZE /* size */ +
2128 emit_event (logbuffer, TYPE_JITHELPER | TYPE_RUNTIME);
2129 emit_byte (logbuffer, type);
2130 emit_ptr (logbuffer, buffer);
2131 emit_value (logbuffer, size);
2134 memcpy (logbuffer->cursor, name, nlen);
2135 logbuffer->cursor += nlen;
2142 throw_exc (MonoProfiler *prof, MonoObject *object)
2144 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_THROW_BT : 0;
2150 ENTER_LOG (&exception_throws_ctr, logbuffer,
2151 EVENT_SIZE /* event */ +
2152 LEB128_SIZE /* object */ +
2154 LEB128_SIZE /* count */ +
2156 LEB128_SIZE /* method */
2161 emit_event (logbuffer, do_bt | TYPE_EXCEPTION);
2162 emit_obj (logbuffer, object);
2165 emit_bt (prof, logbuffer, &data);
2171 clause_exc (MonoProfiler *prof, MonoMethod *method, int clause_type, int clause_num, MonoObject *exc)
2173 ENTER_LOG (&exception_clauses_ctr, logbuffer,
2174 EVENT_SIZE /* event */ +
2175 BYTE_SIZE /* clause type */ +
2176 LEB128_SIZE /* clause num */ +
2177 LEB128_SIZE /* method */
2180 emit_event (logbuffer, TYPE_EXCEPTION | TYPE_CLAUSE);
2181 emit_byte (logbuffer, clause_type);
2182 emit_value (logbuffer, clause_num);
2183 emit_method (logbuffer, method);
2184 emit_obj (logbuffer, exc);
2190 monitor_event (MonoProfiler *profiler, MonoObject *object, MonoProfilerMonitorEvent ev)
2192 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_MONITOR_BT : 0;
2198 ENTER_LOG (&monitor_events_ctr, logbuffer,
2199 EVENT_SIZE /* event */ +
2200 BYTE_SIZE /* ev */ +
2201 LEB128_SIZE /* object */ +
2203 LEB128_SIZE /* count */ +
2205 LEB128_SIZE /* method */
2210 emit_event (logbuffer, do_bt | TYPE_MONITOR);
2211 emit_byte (logbuffer, ev);
2212 emit_obj (logbuffer, object);
2215 emit_bt (profiler, logbuffer, &data);
2221 thread_start (MonoProfiler *prof, uintptr_t tid)
2223 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2224 ENTER_LOG (&thread_starts_ctr, logbuffer,
2225 EVENT_SIZE /* event */ +
2226 BYTE_SIZE /* type */ +
2227 LEB128_SIZE /* tid */
2230 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2231 emit_byte (logbuffer, TYPE_THREAD);
2232 emit_ptr (logbuffer, (void*) tid);
2239 thread_end (MonoProfiler *prof, uintptr_t tid)
2241 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2242 ENTER_LOG (&thread_ends_ctr, logbuffer,
2243 EVENT_SIZE /* event */ +
2244 BYTE_SIZE /* type */ +
2245 LEB128_SIZE /* tid */
2248 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2249 emit_byte (logbuffer, TYPE_THREAD);
2250 emit_ptr (logbuffer, (void*) tid);
2252 EXIT_LOG_EXPLICIT (NO_SEND);
2255 MonoProfilerThread *thread = get_thread ();
2257 thread->ended = TRUE;
2258 remove_thread (thread);
2260 PROF_TLS_SET (NULL);
2264 thread_name (MonoProfiler *prof, uintptr_t tid, const char *name)
2266 int len = strlen (name) + 1;
2268 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2269 ENTER_LOG (&thread_names_ctr, logbuffer,
2270 EVENT_SIZE /* event */ +
2271 BYTE_SIZE /* type */ +
2272 LEB128_SIZE /* tid */ +
2276 emit_event (logbuffer, TYPE_METADATA);
2277 emit_byte (logbuffer, TYPE_THREAD);
2278 emit_ptr (logbuffer, (void*)tid);
2279 memcpy (logbuffer->cursor, name, len);
2280 logbuffer->cursor += len;
2287 domain_loaded (MonoProfiler *prof, MonoDomain *domain, int result)
2289 if (result != MONO_PROFILE_OK)
2292 ENTER_LOG (&domain_loads_ctr, logbuffer,
2293 EVENT_SIZE /* event */ +
2294 BYTE_SIZE /* type */ +
2295 LEB128_SIZE /* domain id */
2298 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2299 emit_byte (logbuffer, TYPE_DOMAIN);
2300 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2306 domain_unloaded (MonoProfiler *prof, MonoDomain *domain)
2308 ENTER_LOG (&domain_unloads_ctr, logbuffer,
2309 EVENT_SIZE /* event */ +
2310 BYTE_SIZE /* type */ +
2311 LEB128_SIZE /* domain id */
2314 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2315 emit_byte (logbuffer, TYPE_DOMAIN);
2316 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2322 domain_name (MonoProfiler *prof, MonoDomain *domain, const char *name)
2324 int nlen = strlen (name) + 1;
2326 ENTER_LOG (&domain_names_ctr, logbuffer,
2327 EVENT_SIZE /* event */ +
2328 BYTE_SIZE /* type */ +
2329 LEB128_SIZE /* domain id */ +
2333 emit_event (logbuffer, TYPE_METADATA);
2334 emit_byte (logbuffer, TYPE_DOMAIN);
2335 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2336 memcpy (logbuffer->cursor, name, nlen);
2337 logbuffer->cursor += nlen;
2343 context_loaded (MonoProfiler *prof, MonoAppContext *context)
2345 ENTER_LOG (&context_loads_ctr, logbuffer,
2346 EVENT_SIZE /* event */ +
2347 BYTE_SIZE /* type */ +
2348 LEB128_SIZE /* context id */ +
2349 LEB128_SIZE /* domain id */
2352 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2353 emit_byte (logbuffer, TYPE_CONTEXT);
2354 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2355 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2361 context_unloaded (MonoProfiler *prof, MonoAppContext *context)
2363 ENTER_LOG (&context_unloads_ctr, logbuffer,
2364 EVENT_SIZE /* event */ +
2365 BYTE_SIZE /* type */ +
2366 LEB128_SIZE /* context id */ +
2367 LEB128_SIZE /* domain id */
2370 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2371 emit_byte (logbuffer, TYPE_CONTEXT);
2372 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2373 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2386 MonoLockFreeQueueNode node;
2392 AsyncFrameInfo frames [MONO_ZERO_LEN_ARRAY];
2396 async_walk_stack (MonoMethod *method, MonoDomain *domain, void *base_address, int offset, void *data)
2398 SampleHit *sample = (SampleHit *) data;
2400 if (sample->count < num_frames) {
2401 int i = sample->count;
2403 sample->frames [i].method = method;
2404 sample->frames [i].domain = domain;
2405 sample->frames [i].base_address = base_address;
2406 sample->frames [i].offset = offset;
2411 return sample->count == num_frames;
2414 #define SAMPLE_SLOT_SIZE(FRAMES) (sizeof (SampleHit) + sizeof (AsyncFrameInfo) * (FRAMES - MONO_ZERO_LEN_ARRAY))
2415 #define SAMPLE_BLOCK_SIZE (mono_pagesize ())
2418 enqueue_sample_hit (gpointer p)
2420 SampleHit *sample = p;
2422 mono_lock_free_queue_node_unpoison (&sample->node);
2423 mono_lock_free_queue_enqueue (&sample->prof->dumper_queue, &sample->node);
2424 mono_os_sem_post (&sample->prof->dumper_queue_sem);
2428 mono_sample_hit (MonoProfiler *profiler, unsigned char *ip, void *context)
2431 * Please note: We rely on the runtime loading the profiler with
2432 * MONO_DL_EAGER (RTLD_NOW) so that references to runtime functions within
2433 * this function (and its siblings) are resolved when the profiler is
2434 * loaded. Otherwise, we would potentially invoke the dynamic linker when
2435 * invoking runtime functions, which is not async-signal-safe.
2438 if (InterlockedRead (&in_shutdown))
2441 SampleHit *sample = (SampleHit *) mono_lock_free_queue_dequeue (&profiler->sample_reuse_queue);
2445 * If we're out of reusable sample events and we're not allowed to
2446 * allocate more, we have no choice but to drop the event.
2448 if (InterlockedRead (&sample_allocations_ctr) >= max_allocated_sample_hits)
2451 sample = mono_lock_free_alloc (&profiler->sample_allocator);
2452 sample->prof = profiler;
2453 mono_lock_free_queue_node_init (&sample->node, TRUE);
2455 InterlockedIncrement (&sample_allocations_ctr);
2459 mono_stack_walk_async_safe (&async_walk_stack, context, sample);
2461 sample->time = current_time ();
2462 sample->tid = thread_id ();
2465 mono_thread_hazardous_try_free (sample, enqueue_sample_hit);
2468 static uintptr_t *code_pages = 0;
2469 static int num_code_pages = 0;
2470 static int size_code_pages = 0;
2471 #define CPAGE_SHIFT (9)
2472 #define CPAGE_SIZE (1 << CPAGE_SHIFT)
2473 #define CPAGE_MASK (~(CPAGE_SIZE - 1))
2474 #define CPAGE_ADDR(p) ((p) & CPAGE_MASK)
2477 add_code_page (uintptr_t *hash, uintptr_t hsize, uintptr_t page)
2480 uintptr_t start_pos;
2481 start_pos = (page >> CPAGE_SHIFT) % hsize;
2484 if (hash [i] && CPAGE_ADDR (hash [i]) == CPAGE_ADDR (page)) {
2486 } else if (!hash [i]) {
2493 } while (i != start_pos);
2494 /* should not happen */
2495 printf ("failed code page store\n");
2500 add_code_pointer (uintptr_t ip)
2503 if (num_code_pages * 2 >= size_code_pages) {
2505 uintptr_t old_size = size_code_pages;
2506 size_code_pages *= 2;
2507 if (size_code_pages == 0)
2508 size_code_pages = 16;
2509 n = (uintptr_t *) g_calloc (sizeof (uintptr_t) * size_code_pages, 1);
2510 for (i = 0; i < old_size; ++i) {
2512 add_code_page (n, size_code_pages, code_pages [i]);
2515 g_free (code_pages);
2518 num_code_pages += add_code_page (code_pages, size_code_pages, ip & CPAGE_MASK);
2521 /* ELF code crashes on some systems. */
2522 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2525 dump_ubin (MonoProfiler *prof, const char *filename, uintptr_t load_addr, uint64_t offset, uintptr_t size)
2527 int len = strlen (filename) + 1;
2529 ENTER_LOG (&sample_ubins_ctr, logbuffer,
2530 EVENT_SIZE /* event */ +
2531 LEB128_SIZE /* load address */ +
2532 LEB128_SIZE /* offset */ +
2533 LEB128_SIZE /* size */ +
2534 nlen /* file name */
2537 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_UBIN);
2538 emit_ptr (logbuffer, load_addr);
2539 emit_uvalue (logbuffer, offset);
2540 emit_uvalue (logbuffer, size);
2541 memcpy (logbuffer->cursor, filename, len);
2542 logbuffer->cursor += len;
2544 EXIT_LOG_EXPLICIT (DO_SEND);
2549 dump_usym (MonoProfiler *prof, const char *name, uintptr_t value, uintptr_t size)
2551 int len = strlen (name) + 1;
2553 ENTER_LOG (&sample_usyms_ctr, logbuffer,
2554 EVENT_SIZE /* event */ +
2555 LEB128_SIZE /* value */ +
2556 LEB128_SIZE /* size */ +
2560 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_USYM);
2561 emit_ptr (logbuffer, (void*)value);
2562 emit_value (logbuffer, size);
2563 memcpy (logbuffer->cursor, name, len);
2564 logbuffer->cursor += len;
2566 EXIT_LOG_EXPLICIT (DO_SEND);
2569 /* ELF code crashes on some systems. */
2570 //#if defined(ELFMAG0)
2573 #if SIZEOF_VOID_P == 4
2574 #define ELF_WSIZE 32
2576 #define ELF_WSIZE 64
2579 #define ElfW(type) _ElfW (Elf, ELF_WSIZE, type)
2580 #define _ElfW(e,w,t) _ElfW_1 (e, w, _##t)
2581 #define _ElfW_1(e,w,t) e##w##t
2585 dump_elf_symbols (MonoProfiler *prof, ElfW(Sym) *symbols, int num_symbols, const char *strtab, void *load_addr)
2588 for (i = 0; i < num_symbols; ++i) {
2590 sym = strtab + symbols [i].st_name;
2591 if (!symbols [i].st_name || !symbols [i].st_size || (symbols [i].st_info & 0xf) != STT_FUNC)
2593 //printf ("symbol %s at %d\n", sym, symbols [i].st_value);
2594 dump_usym (sym, (uintptr_t)load_addr + symbols [i].st_value, symbols [i].st_size);
2599 read_elf_symbols (MonoProfiler *prof, const char *filename, void *load_addr)
2606 ElfW(Shdr) *sheader;
2607 ElfW(Shdr) *shstrtabh;
2608 ElfW(Shdr) *symtabh = NULL;
2609 ElfW(Shdr) *strtabh = NULL;
2610 ElfW(Sym) *symbols = NULL;
2614 fd = open (filename, O_RDONLY);
2617 if (fstat (fd, &statb) != 0) {
2621 file_size = statb.st_size;
2622 data = mmap (NULL, file_size, PROT_READ, MAP_PRIVATE, fd, 0);
2624 if (data == MAP_FAILED)
2627 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2628 header->e_ident [EI_MAG1] != ELFMAG1 ||
2629 header->e_ident [EI_MAG2] != ELFMAG2 ||
2630 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2631 munmap (data, file_size);
2634 sheader = (void*)((char*)data + header->e_shoff);
2635 shstrtabh = (void*)((char*)sheader + (header->e_shentsize * header->e_shstrndx));
2636 strtab = (const char*)data + shstrtabh->sh_offset;
2637 for (i = 0; i < header->e_shnum; ++i) {
2638 //printf ("section header: %d\n", sheader->sh_type);
2639 if (sheader->sh_type == SHT_SYMTAB) {
2641 strtabh = (void*)((char*)data + header->e_shoff + sheader->sh_link * header->e_shentsize);
2642 /*printf ("symtab section header: %d, .strstr: %d\n", i, sheader->sh_link);*/
2645 sheader = (void*)((char*)sheader + header->e_shentsize);
2647 if (!symtabh || !strtabh) {
2648 munmap (data, file_size);
2651 strtab = (const char*)data + strtabh->sh_offset;
2652 num_symbols = symtabh->sh_size / symtabh->sh_entsize;
2653 symbols = (void*)((char*)data + symtabh->sh_offset);
2654 dump_elf_symbols (symbols, num_symbols, strtab, load_addr);
2655 munmap (data, file_size);
2660 /* ELF code crashes on some systems. */
2661 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2664 elf_dl_callback (struct dl_phdr_info *info, size_t size, void *data)
2666 MonoProfiler *prof = data;
2668 const char *filename;
2670 char *a = (void*)info->dlpi_addr;
2672 ElfW(Dyn) *dyn = NULL;
2673 ElfW(Sym) *symtab = NULL;
2674 ElfW(Word) *hash_table = NULL;
2675 ElfW(Ehdr) *header = NULL;
2676 const char* strtab = NULL;
2677 for (obj = prof->binary_objects; obj; obj = obj->next) {
2681 filename = info->dlpi_name;
2684 if (!info->dlpi_addr && !filename [0]) {
2685 int l = readlink ("/proc/self/exe", buf, sizeof (buf) - 1);
2691 obj = g_calloc (sizeof (BinaryObject), 1);
2692 obj->addr = (void*)info->dlpi_addr;
2693 obj->name = pstrdup (filename);
2694 obj->next = prof->binary_objects;
2695 prof->binary_objects = obj;
2696 //printf ("loaded file: %s at %p, segments: %d\n", filename, (void*)info->dlpi_addr, info->dlpi_phnum);
2698 for (i = 0; i < info->dlpi_phnum; ++i) {
2699 //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);
2700 if (info->dlpi_phdr[i].p_type == PT_LOAD && !header) {
2701 header = (ElfW(Ehdr)*)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2702 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2703 header->e_ident [EI_MAG1] != ELFMAG1 ||
2704 header->e_ident [EI_MAG2] != ELFMAG2 ||
2705 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2708 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);
2709 } else if (info->dlpi_phdr[i].p_type == PT_DYNAMIC) {
2710 dyn = (ElfW(Dyn) *)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2713 if (read_elf_symbols (prof, filename, (void*)info->dlpi_addr))
2715 if (!info->dlpi_name || !info->dlpi_name[0])
2719 for (i = 0; dyn [i].d_tag != DT_NULL; ++i) {
2720 if (dyn [i].d_tag == DT_SYMTAB) {
2721 if (symtab && do_debug)
2722 printf ("multiple symtabs: %d\n", i);
2723 symtab = (ElfW(Sym) *)(a + dyn [i].d_un.d_ptr);
2724 } else if (dyn [i].d_tag == DT_HASH) {
2725 hash_table = (ElfW(Word) *)(a + dyn [i].d_un.d_ptr);
2726 } else if (dyn [i].d_tag == DT_STRTAB) {
2727 strtab = (const char*)(a + dyn [i].d_un.d_ptr);
2732 num_sym = hash_table [1];
2733 dump_elf_symbols (prof, symtab, num_sym, strtab, (void*)info->dlpi_addr);
2738 load_binaries (MonoProfiler *prof)
2740 dl_iterate_phdr (elf_dl_callback, prof);
2745 load_binaries (MonoProfiler *prof)
2752 symbol_for (uintptr_t code)
2755 void *ip = (void*)code;
2757 if (dladdr (ip, &di)) {
2759 return di.dli_sname;
2762 names = backtrace_symbols (&ip, 1);
2764 const char* p = names [0];
2775 dump_unmanaged_coderefs (MonoProfiler *prof)
2778 const char* last_symbol;
2779 uintptr_t addr, page_end;
2781 if (load_binaries (prof))
2783 for (i = 0; i < size_code_pages; ++i) {
2785 if (!code_pages [i] || code_pages [i] & 1)
2788 addr = CPAGE_ADDR (code_pages [i]);
2789 page_end = addr + CPAGE_SIZE;
2790 code_pages [i] |= 1;
2791 /* we dump the symbols for the whole page */
2792 for (; addr < page_end; addr += 16) {
2793 sym = symbol_for (addr);
2794 if (sym && sym == last_symbol)
2799 dump_usym (prof, sym, addr, 0); /* let's not guess the size */
2800 //printf ("found symbol at %p: %s\n", (void*)addr, sym);
2805 typedef struct MonoCounterAgent {
2806 MonoCounter *counter;
2807 // MonoCounterAgent specific data :
2812 struct MonoCounterAgent *next;
2815 static MonoCounterAgent* counters;
2816 static int counters_index = 1;
2817 static mono_mutex_t counters_mutex;
2820 counters_add_agent (MonoCounter *counter)
2822 if (InterlockedRead (&in_shutdown))
2825 MonoCounterAgent *agent, *item;
2827 mono_os_mutex_lock (&counters_mutex);
2829 for (agent = counters; agent; agent = agent->next) {
2830 if (agent->counter == counter) {
2831 agent->value_size = 0;
2833 g_free (agent->value);
2834 agent->value = NULL;
2840 agent = (MonoCounterAgent *) g_malloc (sizeof (MonoCounterAgent));
2841 agent->counter = counter;
2842 agent->value = NULL;
2843 agent->value_size = 0;
2844 agent->index = counters_index++;
2858 mono_os_mutex_unlock (&counters_mutex);
2862 counters_init_foreach_callback (MonoCounter *counter, gpointer data)
2864 counters_add_agent (counter);
2869 counters_init (MonoProfiler *profiler)
2871 mono_os_mutex_init (&counters_mutex);
2873 mono_counters_on_register (&counters_add_agent);
2874 mono_counters_foreach (counters_init_foreach_callback, NULL);
2878 counters_emit (MonoProfiler *profiler)
2880 MonoCounterAgent *agent;
2883 EVENT_SIZE /* event */ +
2884 LEB128_SIZE /* len */
2887 mono_os_mutex_lock (&counters_mutex);
2889 for (agent = counters; agent; agent = agent->next) {
2894 LEB128_SIZE /* section */ +
2895 strlen (mono_counter_get_name (agent->counter)) + 1 /* name */ +
2896 BYTE_SIZE /* type */ +
2897 BYTE_SIZE /* unit */ +
2898 BYTE_SIZE /* variance */ +
2899 LEB128_SIZE /* index */
2908 ENTER_LOG (&counter_descriptors_ctr, logbuffer, size);
2910 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
2911 emit_value (logbuffer, len);
2913 for (agent = counters; agent; agent = agent->next) {
2919 name = mono_counter_get_name (agent->counter);
2920 emit_value (logbuffer, mono_counter_get_section (agent->counter));
2921 emit_string (logbuffer, name, strlen (name) + 1);
2922 emit_byte (logbuffer, mono_counter_get_type (agent->counter));
2923 emit_byte (logbuffer, mono_counter_get_unit (agent->counter));
2924 emit_byte (logbuffer, mono_counter_get_variance (agent->counter));
2925 emit_value (logbuffer, agent->index);
2930 EXIT_LOG_EXPLICIT (DO_SEND);
2933 mono_os_mutex_unlock (&counters_mutex);
2937 counters_sample (MonoProfiler *profiler, uint64_t timestamp)
2939 MonoCounterAgent *agent;
2940 MonoCounter *counter;
2946 counters_emit (profiler);
2949 buffer = g_calloc (1, buffer_size);
2951 mono_os_mutex_lock (&counters_mutex);
2954 EVENT_SIZE /* event */
2957 for (agent = counters; agent; agent = agent->next) {
2959 LEB128_SIZE /* index */ +
2960 BYTE_SIZE /* type */ +
2961 mono_counter_get_size (agent->counter) /* value */
2966 LEB128_SIZE /* stop marker */
2969 ENTER_LOG (&counter_samples_ctr, logbuffer, size);
2971 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
2973 for (agent = counters; agent; agent = agent->next) {
2976 counter = agent->counter;
2978 size = mono_counter_get_size (counter);
2980 if (size > buffer_size) {
2982 buffer = g_realloc (buffer, buffer_size);
2985 memset (buffer, 0, buffer_size);
2987 g_assert (mono_counters_sample (counter, buffer, size));
2989 type = mono_counter_get_type (counter);
2991 if (!agent->value) {
2992 agent->value = g_calloc (1, size);
2993 agent->value_size = size;
2995 if (type == MONO_COUNTER_STRING) {
2996 if (strcmp (agent->value, buffer) == 0)
2999 if (agent->value_size == size && memcmp (agent->value, buffer, size) == 0)
3004 emit_uvalue (logbuffer, agent->index);
3005 emit_byte (logbuffer, type);
3007 case MONO_COUNTER_INT:
3008 #if SIZEOF_VOID_P == 4
3009 case MONO_COUNTER_WORD:
3011 emit_svalue (logbuffer, *(int*)buffer - *(int*)agent->value);
3013 case MONO_COUNTER_UINT:
3014 emit_uvalue (logbuffer, *(guint*)buffer - *(guint*)agent->value);
3016 case MONO_COUNTER_TIME_INTERVAL:
3017 case MONO_COUNTER_LONG:
3018 #if SIZEOF_VOID_P == 8
3019 case MONO_COUNTER_WORD:
3021 emit_svalue (logbuffer, *(gint64*)buffer - *(gint64*)agent->value);
3023 case MONO_COUNTER_ULONG:
3024 emit_uvalue (logbuffer, *(guint64*)buffer - *(guint64*)agent->value);
3026 case MONO_COUNTER_DOUBLE:
3027 emit_double (logbuffer, *(double*)buffer);
3029 case MONO_COUNTER_STRING:
3031 emit_byte (logbuffer, 0);
3033 emit_byte (logbuffer, 1);
3034 emit_string (logbuffer, (char*)buffer, size);
3038 g_assert_not_reached ();
3041 if (type == MONO_COUNTER_STRING && size > agent->value_size) {
3042 agent->value = g_realloc (agent->value, size);
3043 agent->value_size = size;
3047 memcpy (agent->value, buffer, size);
3051 emit_value (logbuffer, 0);
3053 EXIT_LOG_EXPLICIT (DO_SEND);
3055 mono_os_mutex_unlock (&counters_mutex);
3058 typedef struct _PerfCounterAgent PerfCounterAgent;
3059 struct _PerfCounterAgent {
3060 PerfCounterAgent *next;
3062 char *category_name;
3071 static PerfCounterAgent *perfcounters = NULL;
3074 perfcounters_emit (MonoProfiler *profiler)
3076 PerfCounterAgent *pcagent;
3079 EVENT_SIZE /* event */ +
3080 LEB128_SIZE /* len */
3083 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3084 if (pcagent->emitted)
3088 LEB128_SIZE /* section */ +
3089 strlen (pcagent->category_name) + 1 /* category name */ +
3090 strlen (pcagent->name) + 1 /* name */ +
3091 BYTE_SIZE /* type */ +
3092 BYTE_SIZE /* unit */ +
3093 BYTE_SIZE /* variance */ +
3094 LEB128_SIZE /* index */
3103 ENTER_LOG (&perfcounter_descriptors_ctr, logbuffer, size);
3105 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
3106 emit_value (logbuffer, len);
3108 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3109 if (pcagent->emitted)
3112 emit_value (logbuffer, MONO_COUNTER_PERFCOUNTERS);
3113 emit_string (logbuffer, pcagent->category_name, strlen (pcagent->category_name) + 1);
3114 emit_string (logbuffer, pcagent->name, strlen (pcagent->name) + 1);
3115 emit_byte (logbuffer, MONO_COUNTER_LONG);
3116 emit_byte (logbuffer, MONO_COUNTER_RAW);
3117 emit_byte (logbuffer, MONO_COUNTER_VARIABLE);
3118 emit_value (logbuffer, pcagent->index);
3120 pcagent->emitted = 1;
3123 EXIT_LOG_EXPLICIT (DO_SEND);
3127 perfcounters_foreach (char *category_name, char *name, unsigned char type, gint64 value, gpointer user_data)
3129 PerfCounterAgent *pcagent;
3131 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3132 if (strcmp (pcagent->category_name, category_name) != 0 || strcmp (pcagent->name, name) != 0)
3134 if (pcagent->value == value)
3137 pcagent->value = value;
3138 pcagent->updated = 1;
3139 pcagent->deleted = 0;
3143 pcagent = g_new0 (PerfCounterAgent, 1);
3144 pcagent->next = perfcounters;
3145 pcagent->index = counters_index++;
3146 pcagent->category_name = g_strdup (category_name);
3147 pcagent->name = g_strdup (name);
3148 pcagent->type = (int) type;
3149 pcagent->value = value;
3150 pcagent->emitted = 0;
3151 pcagent->updated = 1;
3152 pcagent->deleted = 0;
3154 perfcounters = pcagent;
3160 perfcounters_sample (MonoProfiler *profiler, uint64_t timestamp)
3162 PerfCounterAgent *pcagent;
3166 mono_os_mutex_lock (&counters_mutex);
3168 /* mark all perfcounters as deleted, foreach will unmark them as necessary */
3169 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next)
3170 pcagent->deleted = 1;
3172 mono_perfcounter_foreach (perfcounters_foreach, perfcounters);
3174 perfcounters_emit (profiler);
3177 EVENT_SIZE /* event */
3180 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3181 if (pcagent->deleted || !pcagent->updated)
3185 LEB128_SIZE /* index */ +
3186 BYTE_SIZE /* type */ +
3187 LEB128_SIZE /* value */
3197 LEB128_SIZE /* stop marker */
3200 ENTER_LOG (&perfcounter_samples_ctr, logbuffer, size);
3202 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
3204 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3205 if (pcagent->deleted || !pcagent->updated)
3207 emit_uvalue (logbuffer, pcagent->index);
3208 emit_byte (logbuffer, MONO_COUNTER_LONG);
3209 emit_svalue (logbuffer, pcagent->value);
3211 pcagent->updated = 0;
3214 emit_value (logbuffer, 0);
3216 EXIT_LOG_EXPLICIT (DO_SEND);
3219 mono_os_mutex_unlock (&counters_mutex);
3223 counters_and_perfcounters_sample (MonoProfiler *prof)
3225 uint64_t now = current_time ();
3227 counters_sample (prof, now);
3228 perfcounters_sample (prof, now);
3231 #define COVERAGE_DEBUG(x) if (debug_coverage) {x}
3232 static mono_mutex_t coverage_mutex;
3233 static MonoConcurrentHashTable *coverage_methods = NULL;
3234 static MonoConcurrentHashTable *coverage_assemblies = NULL;
3235 static MonoConcurrentHashTable *coverage_classes = NULL;
3237 static MonoConcurrentHashTable *filtered_classes = NULL;
3238 static MonoConcurrentHashTable *entered_methods = NULL;
3239 static MonoConcurrentHashTable *image_to_methods = NULL;
3240 static MonoConcurrentHashTable *suppressed_assemblies = NULL;
3241 static gboolean coverage_initialized = FALSE;
3243 static GPtrArray *coverage_data = NULL;
3244 static int previous_offset = 0;
3247 MonoLockFreeQueueNode node;
3260 free_coverage_entry (gpointer data, gpointer userdata)
3262 CoverageEntry *entry = (CoverageEntry *)data;
3263 g_free (entry->filename);
3268 obtain_coverage_for_method (MonoProfiler *prof, const MonoProfileCoverageEntry *entry)
3270 int offset = entry->iloffset - previous_offset;
3271 CoverageEntry *e = g_new (CoverageEntry, 1);
3273 previous_offset = entry->iloffset;
3276 e->counter = entry->counter;
3277 e->filename = g_strdup(entry->filename ? entry->filename : "");
3278 e->line = entry->line;
3279 e->column = entry->col;
3281 g_ptr_array_add (coverage_data, e);
3285 parse_generic_type_names(char *name)
3287 char *new_name, *ret;
3288 int within_generic_declaration = 0, generic_members = 1;
3290 if (name == NULL || *name == '\0')
3291 return g_strdup ("");
3293 if (!(ret = new_name = (char *) g_calloc (strlen (name) * 4 + 1, sizeof (char))))
3299 within_generic_declaration = 1;
3303 within_generic_declaration = 0;
3305 if (*(name - 1) != '<') {
3307 *new_name++ = '0' + generic_members;
3309 memcpy (new_name, "<>", 8);
3313 generic_members = 0;
3321 if (!within_generic_declaration)
3322 *new_name++ = *name;
3331 static int method_id;
3333 build_method_buffer (gpointer key, gpointer value, gpointer userdata)
3335 MonoMethod *method = (MonoMethod *)value;
3336 MonoProfiler *prof = (MonoProfiler *)userdata;
3340 const char *image_name, *method_name, *sig, *first_filename;
3343 previous_offset = 0;
3344 coverage_data = g_ptr_array_new ();
3346 mono_profiler_coverage_get (prof, method, obtain_coverage_for_method);
3348 klass = mono_method_get_class (method);
3349 image = mono_class_get_image (klass);
3350 image_name = mono_image_get_name (image);
3352 sig = mono_signature_get_desc (mono_method_signature (method), TRUE);
3353 class_name = parse_generic_type_names (mono_type_get_name (mono_class_get_type (klass)));
3354 method_name = mono_method_get_name (method);
3356 if (coverage_data->len != 0) {
3357 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[0];
3358 first_filename = entry->filename ? entry->filename : "";
3360 first_filename = "";
3362 image_name = image_name ? image_name : "";
3363 sig = sig ? sig : "";
3364 method_name = method_name ? method_name : "";
3366 ENTER_LOG (&coverage_methods_ctr, logbuffer,
3367 EVENT_SIZE /* event */ +
3368 strlen (image_name) + 1 /* image name */ +
3369 strlen (class_name) + 1 /* class name */ +
3370 strlen (method_name) + 1 /* method name */ +
3371 strlen (sig) + 1 /* signature */ +
3372 strlen (first_filename) + 1 /* first file name */ +
3373 LEB128_SIZE /* token */ +
3374 LEB128_SIZE /* method id */ +
3375 LEB128_SIZE /* entries */
3378 emit_event (logbuffer, TYPE_COVERAGE_METHOD | TYPE_COVERAGE);
3379 emit_string (logbuffer, image_name, strlen (image_name) + 1);
3380 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3381 emit_string (logbuffer, method_name, strlen (method_name) + 1);
3382 emit_string (logbuffer, sig, strlen (sig) + 1);
3383 emit_string (logbuffer, first_filename, strlen (first_filename) + 1);
3385 emit_uvalue (logbuffer, mono_method_get_token (method));
3386 emit_uvalue (logbuffer, method_id);
3387 emit_value (logbuffer, coverage_data->len);
3389 EXIT_LOG_EXPLICIT (DO_SEND);
3391 for (i = 0; i < coverage_data->len; i++) {
3392 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[i];
3394 ENTER_LOG (&coverage_statements_ctr, logbuffer,
3395 EVENT_SIZE /* event */ +
3396 LEB128_SIZE /* method id */ +
3397 LEB128_SIZE /* offset */ +
3398 LEB128_SIZE /* counter */ +
3399 LEB128_SIZE /* line */ +
3400 LEB128_SIZE /* column */
3403 emit_event (logbuffer, TYPE_COVERAGE_STATEMENT | TYPE_COVERAGE);
3404 emit_uvalue (logbuffer, method_id);
3405 emit_uvalue (logbuffer, entry->offset);
3406 emit_uvalue (logbuffer, entry->counter);
3407 emit_uvalue (logbuffer, entry->line);
3408 emit_uvalue (logbuffer, entry->column);
3410 EXIT_LOG_EXPLICIT (DO_SEND);
3415 g_free (class_name);
3417 g_ptr_array_foreach (coverage_data, free_coverage_entry, NULL);
3418 g_ptr_array_free (coverage_data, TRUE);
3419 coverage_data = NULL;
3422 /* This empties the queue */
3424 count_queue (MonoLockFreeQueue *queue)
3426 MonoLockFreeQueueNode *node;
3429 while ((node = mono_lock_free_queue_dequeue (queue))) {
3431 mono_thread_hazardous_try_free (node, g_free);
3438 build_class_buffer (gpointer key, gpointer value, gpointer userdata)
3440 MonoClass *klass = (MonoClass *)key;
3441 MonoLockFreeQueue *class_methods = (MonoLockFreeQueue *)value;
3444 const char *assembly_name;
3445 int number_of_methods, partially_covered;
3446 guint fully_covered;
3448 image = mono_class_get_image (klass);
3449 assembly_name = mono_image_get_name (image);
3450 class_name = mono_type_get_name (mono_class_get_type (klass));
3452 assembly_name = assembly_name ? assembly_name : "";
3453 number_of_methods = mono_class_num_methods (klass);
3454 fully_covered = count_queue (class_methods);
3455 /* We don't handle partial covered yet */
3456 partially_covered = 0;
3458 ENTER_LOG (&coverage_classes_ctr, logbuffer,
3459 EVENT_SIZE /* event */ +
3460 strlen (assembly_name) + 1 /* assembly name */ +
3461 strlen (class_name) + 1 /* class name */ +
3462 LEB128_SIZE /* no. methods */ +
3463 LEB128_SIZE /* fully covered */ +
3464 LEB128_SIZE /* partially covered */
3467 emit_event (logbuffer, TYPE_COVERAGE_CLASS | TYPE_COVERAGE);
3468 emit_string (logbuffer, assembly_name, strlen (assembly_name) + 1);
3469 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3470 emit_uvalue (logbuffer, number_of_methods);
3471 emit_uvalue (logbuffer, fully_covered);
3472 emit_uvalue (logbuffer, partially_covered);
3474 EXIT_LOG_EXPLICIT (DO_SEND);
3476 g_free (class_name);
3480 get_coverage_for_image (MonoImage *image, int *number_of_methods, guint *fully_covered, int *partially_covered)
3482 MonoLockFreeQueue *image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3484 *number_of_methods = mono_image_get_table_rows (image, MONO_TABLE_METHOD);
3486 *fully_covered = count_queue (image_methods);
3490 // FIXME: We don't handle partially covered yet.
3491 *partially_covered = 0;
3495 build_assembly_buffer (gpointer key, gpointer value, gpointer userdata)
3497 MonoAssembly *assembly = (MonoAssembly *)value;
3498 MonoImage *image = mono_assembly_get_image (assembly);
3499 const char *name, *guid, *filename;
3500 int number_of_methods = 0, partially_covered = 0;
3501 guint fully_covered = 0;
3503 name = mono_image_get_name (image);
3504 guid = mono_image_get_guid (image);
3505 filename = mono_image_get_filename (image);
3507 name = name ? name : "";
3508 guid = guid ? guid : "";
3509 filename = filename ? filename : "";
3511 get_coverage_for_image (image, &number_of_methods, &fully_covered, &partially_covered);
3513 ENTER_LOG (&coverage_assemblies_ctr, logbuffer,
3514 EVENT_SIZE /* event */ +
3515 strlen (name) + 1 /* name */ +
3516 strlen (guid) + 1 /* guid */ +
3517 strlen (filename) + 1 /* file name */ +
3518 LEB128_SIZE /* no. methods */ +
3519 LEB128_SIZE /* fully covered */ +
3520 LEB128_SIZE /* partially covered */
3523 emit_event (logbuffer, TYPE_COVERAGE_ASSEMBLY | TYPE_COVERAGE);
3524 emit_string (logbuffer, name, strlen (name) + 1);
3525 emit_string (logbuffer, guid, strlen (guid) + 1);
3526 emit_string (logbuffer, filename, strlen (filename) + 1);
3527 emit_uvalue (logbuffer, number_of_methods);
3528 emit_uvalue (logbuffer, fully_covered);
3529 emit_uvalue (logbuffer, partially_covered);
3531 EXIT_LOG_EXPLICIT (DO_SEND);
3535 dump_coverage (MonoProfiler *prof)
3537 if (!coverage_initialized)
3540 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Started dump\n");)
3543 mono_os_mutex_lock (&coverage_mutex);
3544 mono_conc_hashtable_foreach (coverage_assemblies, build_assembly_buffer, NULL);
3545 mono_conc_hashtable_foreach (coverage_classes, build_class_buffer, NULL);
3546 mono_conc_hashtable_foreach (coverage_methods, build_method_buffer, prof);
3547 mono_os_mutex_unlock (&coverage_mutex);
3549 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Finished dump\n");)
3553 process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method)
3558 if (!coverage_initialized)
3561 klass = mono_method_get_class (method);
3562 image = mono_class_get_image (klass);
3564 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)))
3567 mono_os_mutex_lock (&coverage_mutex);
3568 mono_conc_hashtable_insert (entered_methods, method, method);
3569 mono_os_mutex_unlock (&coverage_mutex);
3572 static MonoLockFreeQueueNode *
3573 create_method_node (MonoMethod *method)
3575 MethodNode *node = (MethodNode *) g_malloc (sizeof (MethodNode));
3576 mono_lock_free_queue_node_init ((MonoLockFreeQueueNode *) node, FALSE);
3577 node->method = method;
3579 return (MonoLockFreeQueueNode *) node;
3583 coverage_filter (MonoProfiler *prof, MonoMethod *method)
3588 MonoAssembly *assembly;
3589 MonoMethodHeader *header;
3590 guint32 iflags, flags, code_size;
3591 char *fqn, *classname;
3592 gboolean has_positive, found;
3593 MonoLockFreeQueue *image_methods, *class_methods;
3594 MonoLockFreeQueueNode *node;
3596 g_assert (coverage_initialized && "Why are we being asked for coverage filter info when we're not doing coverage?");
3598 COVERAGE_DEBUG(fprintf (stderr, "Coverage filter for %s\n", mono_method_get_name (method));)
3600 flags = mono_method_get_flags (method, &iflags);
3601 if ((iflags & 0x1000 /*METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL*/) ||
3602 (flags & 0x2000 /*METHOD_ATTRIBUTE_PINVOKE_IMPL*/)) {
3603 COVERAGE_DEBUG(fprintf (stderr, " Internal call or pinvoke - ignoring\n");)
3607 // Don't need to do anything else if we're already tracking this method
3608 if (mono_conc_hashtable_lookup (coverage_methods, method)) {
3609 COVERAGE_DEBUG(fprintf (stderr, " Already tracking\n");)
3613 klass = mono_method_get_class (method);
3614 image = mono_class_get_image (klass);
3616 // Don't handle coverage for the core assemblies
3617 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)) != NULL)
3620 if (prof->coverage_filters) {
3621 /* Check already filtered classes first */
3622 if (mono_conc_hashtable_lookup (filtered_classes, klass)) {
3623 COVERAGE_DEBUG(fprintf (stderr, " Already filtered\n");)
3627 classname = mono_type_get_name (mono_class_get_type (klass));
3629 fqn = g_strdup_printf ("[%s]%s", mono_image_get_name (image), classname);
3631 COVERAGE_DEBUG(fprintf (stderr, " Looking for %s in filter\n", fqn);)
3632 // Check positive filters first
3633 has_positive = FALSE;
3635 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3636 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3638 if (filter [0] == '+') {
3639 filter = &filter [1];
3641 COVERAGE_DEBUG(fprintf (stderr, " Checking against +%s ...", filter);)
3643 if (strstr (fqn, filter) != NULL) {
3644 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3647 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3649 has_positive = TRUE;
3653 if (has_positive && !found) {
3654 COVERAGE_DEBUG(fprintf (stderr, " Positive match was not found\n");)
3656 mono_os_mutex_lock (&coverage_mutex);
3657 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3658 mono_os_mutex_unlock (&coverage_mutex);
3665 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3666 // FIXME: Is substring search sufficient?
3667 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3668 if (filter [0] == '+')
3672 filter = &filter [1];
3673 COVERAGE_DEBUG(fprintf (stderr, " Checking against -%s ...", filter);)
3675 if (strstr (fqn, filter) != NULL) {
3676 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3678 mono_os_mutex_lock (&coverage_mutex);
3679 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3680 mono_os_mutex_unlock (&coverage_mutex);
3686 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3694 COVERAGE_DEBUG(fprintf (stderr, " Handling coverage for %s\n", mono_method_get_name (method));)
3695 header = mono_method_get_header_checked (method, &error);
3696 mono_error_cleanup (&error);
3698 mono_method_header_get_code (header, &code_size, NULL);
3700 assembly = mono_image_get_assembly (image);
3702 // Need to keep the assemblies around for as long as they are kept in the hashtable
3703 // Nunit, for example, has a habit of unloading them before the coverage statistics are
3704 // generated causing a crash. See https://bugzilla.xamarin.com/show_bug.cgi?id=39325
3705 mono_assembly_addref (assembly);
3707 mono_os_mutex_lock (&coverage_mutex);
3708 mono_conc_hashtable_insert (coverage_methods, method, method);
3709 mono_conc_hashtable_insert (coverage_assemblies, assembly, assembly);
3710 mono_os_mutex_unlock (&coverage_mutex);
3712 image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3714 if (image_methods == NULL) {
3715 image_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3716 mono_lock_free_queue_init (image_methods);
3717 mono_os_mutex_lock (&coverage_mutex);
3718 mono_conc_hashtable_insert (image_to_methods, image, image_methods);
3719 mono_os_mutex_unlock (&coverage_mutex);
3722 node = create_method_node (method);
3723 mono_lock_free_queue_enqueue (image_methods, node);
3725 class_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (coverage_classes, klass);
3727 if (class_methods == NULL) {
3728 class_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3729 mono_lock_free_queue_init (class_methods);
3730 mono_os_mutex_lock (&coverage_mutex);
3731 mono_conc_hashtable_insert (coverage_classes, klass, class_methods);
3732 mono_os_mutex_unlock (&coverage_mutex);
3735 node = create_method_node (method);
3736 mono_lock_free_queue_enqueue (class_methods, node);
3741 #define LINE_BUFFER_SIZE 4096
3742 /* Max file limit of 128KB */
3743 #define MAX_FILE_SIZE 128 * 1024
3745 get_file_content (FILE *stream)
3750 int res, offset = 0;
3752 res = fseek (stream, 0, SEEK_END);
3756 filesize = ftell (stream);
3760 res = fseek (stream, 0, SEEK_SET);
3764 if (filesize > MAX_FILE_SIZE)
3767 buffer = (char *) g_malloc ((filesize + 1) * sizeof (char));
3768 while ((bytes_read = fread (buffer + offset, 1, LINE_BUFFER_SIZE, stream)) > 0)
3769 offset += bytes_read;
3771 /* NULL terminate our buffer */
3772 buffer[filesize] = '\0';
3777 get_next_line (char *contents, char **next_start)
3781 if (p == NULL || *p == '\0') {
3786 while (*p != '\n' && *p != '\0')
3791 *next_start = p + 1;
3799 init_suppressed_assemblies (void)
3805 suppressed_assemblies = mono_conc_hashtable_new (g_str_hash, g_str_equal);
3806 sa_file = fopen (SUPPRESSION_DIR "/mono-profiler-log.suppression", "r");
3807 if (sa_file == NULL)
3810 /* Don't need to free @content as it is referred to by the lines stored in @suppressed_assemblies */
3811 content = get_file_content (sa_file);
3812 if (content == NULL) {
3813 g_error ("mono-profiler-log.suppression is greater than 128kb - aborting\n");
3816 while ((line = get_next_line (content, &content))) {
3817 line = g_strchomp (g_strchug (line));
3818 /* No locking needed as we're doing initialization */
3819 mono_conc_hashtable_insert (suppressed_assemblies, line, line);
3826 parse_cov_filter_file (GPtrArray *filters, const char *file)
3829 char *line, *content;
3831 filter_file = fopen (file, "r");
3832 if (filter_file == NULL) {
3833 fprintf (stderr, "Unable to open %s\n", file);
3837 /* Don't need to free content as it is referred to by the lines stored in @filters */
3838 content = get_file_content (filter_file);
3839 if (content == NULL)
3840 fprintf (stderr, "WARNING: %s is greater than 128kb - ignoring\n", file);
3842 while ((line = get_next_line (content, &content)))
3843 g_ptr_array_add (filters, g_strchug (g_strchomp (line)));
3845 fclose (filter_file);
3849 coverage_init (MonoProfiler *prof)
3851 g_assert (!coverage_initialized && "Why are we initializing coverage twice?");
3853 COVERAGE_DEBUG(fprintf (stderr, "Coverage initialized\n");)
3855 mono_os_mutex_init (&coverage_mutex);
3856 coverage_methods = mono_conc_hashtable_new (NULL, NULL);
3857 coverage_assemblies = mono_conc_hashtable_new (NULL, NULL);
3858 coverage_classes = mono_conc_hashtable_new (NULL, NULL);
3859 filtered_classes = mono_conc_hashtable_new (NULL, NULL);
3860 entered_methods = mono_conc_hashtable_new (NULL, NULL);
3861 image_to_methods = mono_conc_hashtable_new (NULL, NULL);
3862 init_suppressed_assemblies ();
3864 coverage_initialized = TRUE;
3868 unref_coverage_assemblies (gpointer key, gpointer value, gpointer userdata)
3870 MonoAssembly *assembly = (MonoAssembly *)value;
3871 mono_assembly_close (assembly);
3875 free_sample_hit (gpointer p)
3877 mono_lock_free_free (p, SAMPLE_BLOCK_SIZE);
3881 cleanup_reusable_samples (MonoProfiler *prof)
3885 while ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->sample_reuse_queue)))
3886 mono_thread_hazardous_try_free (sample, free_sample_hit);
3890 log_shutdown (MonoProfiler *prof)
3892 InterlockedWrite (&in_shutdown, 1);
3895 counters_and_perfcounters_sample (prof);
3897 dump_coverage (prof);
3901 if (write (prof->pipes [1], &c, 1) != 1) {
3902 fprintf (stderr, "Could not write to pipe: %s\n", strerror (errno));
3906 mono_native_thread_join (prof->helper_thread);
3908 mono_os_mutex_destroy (&counters_mutex);
3910 MonoCounterAgent *mc_next;
3912 for (MonoCounterAgent *cur = counters; cur; cur = mc_next) {
3913 mc_next = cur->next;
3917 PerfCounterAgent *pc_next;
3919 for (PerfCounterAgent *cur = perfcounters; cur; cur = pc_next) {
3920 pc_next = cur->next;
3925 * Ensure that we empty the LLS completely, even if some nodes are
3926 * not immediately removed upon calling mono_lls_remove (), by
3927 * iterating until the head is NULL.
3929 while (profiler_thread_list.head) {
3930 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
3931 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
3933 remove_thread (thread);
3934 } MONO_LLS_FOREACH_SAFE_END
3938 * Ensure that all threads have been freed, so that we don't miss any
3939 * buffers when we shut down the writer thread below.
3941 mono_thread_hazardous_try_free_all ();
3943 InterlockedWrite (&prof->run_dumper_thread, 0);
3944 mono_os_sem_post (&prof->dumper_queue_sem);
3945 mono_native_thread_join (prof->dumper_thread);
3946 mono_os_sem_destroy (&prof->dumper_queue_sem);
3948 InterlockedWrite (&prof->run_writer_thread, 0);
3949 mono_os_sem_post (&prof->writer_queue_sem);
3950 mono_native_thread_join (prof->writer_thread);
3951 mono_os_sem_destroy (&prof->writer_queue_sem);
3954 * Free all writer queue entries, and ensure that all sample hits will be
3955 * added to the sample reuse queue.
3957 mono_thread_hazardous_try_free_all ();
3959 cleanup_reusable_samples (prof);
3962 * Finally, make sure that all sample hits are freed. This should cover all
3963 * hazardous data from the profiler. We can now be sure that the runtime
3964 * won't later invoke free functions in the profiler library after it has
3967 mono_thread_hazardous_try_free_all ();
3969 gint32 state = InterlockedRead (&buffer_lock_state);
3971 g_assert (!(state & 0xFFFF) && "Why is the reader count still non-zero?");
3972 g_assert (!(state >> 16) && "Why is the exclusive lock still held?");
3974 #if defined (HAVE_SYS_ZLIB)
3976 gzclose (prof->gzfile);
3978 if (prof->pipe_output)
3979 pclose (prof->file);
3981 fclose (prof->file);
3983 mono_conc_hashtable_destroy (prof->method_table);
3984 mono_os_mutex_destroy (&prof->method_table_mutex);
3986 if (coverage_initialized) {
3987 mono_os_mutex_lock (&coverage_mutex);
3988 mono_conc_hashtable_foreach (coverage_assemblies, unref_coverage_assemblies, prof);
3989 mono_os_mutex_unlock (&coverage_mutex);
3991 mono_conc_hashtable_destroy (coverage_methods);
3992 mono_conc_hashtable_destroy (coverage_assemblies);
3993 mono_conc_hashtable_destroy (coverage_classes);
3994 mono_conc_hashtable_destroy (filtered_classes);
3996 mono_conc_hashtable_destroy (entered_methods);
3997 mono_conc_hashtable_destroy (image_to_methods);
3998 mono_conc_hashtable_destroy (suppressed_assemblies);
3999 mono_os_mutex_destroy (&coverage_mutex);
4004 g_free (prof->args);
4009 new_filename (const char* filename)
4011 time_t t = time (NULL);
4012 int pid = process_id ();
4017 int count_dates = 0;
4021 for (p = filename; *p; p++) {
4032 if (!count_dates && !count_pids)
4033 return pstrdup (filename);
4034 snprintf (pid_buf, sizeof (pid_buf), "%d", pid);
4036 snprintf (time_buf, sizeof (time_buf), "%d%02d%02d%02d%02d%02d",
4037 1900 + ts->tm_year, 1 + ts->tm_mon, ts->tm_mday, ts->tm_hour, ts->tm_min, ts->tm_sec);
4038 s_date = strlen (time_buf);
4039 s_pid = strlen (pid_buf);
4040 d = res = (char *) g_malloc (strlen (filename) + s_date * count_dates + s_pid * count_pids);
4041 for (p = filename; *p; p++) {
4048 strcpy (d, time_buf);
4051 } else if (*p == 'p') {
4052 strcpy (d, pid_buf);
4055 } else if (*p == '%') {
4068 add_to_fd_set (fd_set *set, int fd, int *max_fd)
4071 * This should only trigger for the basic FDs (server socket, pipes) at
4072 * startup if for some mysterious reason they're too large. In this case,
4073 * the profiler really can't function, and we're better off printing an
4074 * error and exiting.
4076 if (fd >= FD_SETSIZE) {
4077 fprintf (stderr, "File descriptor is out of bounds for fd_set: %d\n", fd);
4088 helper_thread (void *arg)
4090 MonoProfiler *prof = (MonoProfiler *) arg;
4092 mono_threads_attach_tools_thread ();
4093 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler helper");
4095 MonoProfilerThread *thread = init_thread (prof, FALSE);
4097 GArray *command_sockets = g_array_new (FALSE, FALSE, sizeof (int));
4105 add_to_fd_set (&rfds, prof->server_socket, &max_fd);
4106 add_to_fd_set (&rfds, prof->pipes [0], &max_fd);
4108 for (gint i = 0; i < command_sockets->len; i++)
4109 add_to_fd_set (&rfds, g_array_index (command_sockets, int, i), &max_fd);
4111 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
4113 // Sleep for 1sec or until a file descriptor has data.
4114 if (select (max_fd + 1, &rfds, NULL, NULL, &tv) == -1) {
4118 fprintf (stderr, "Error in mono-profiler-log server: %s", strerror (errno));
4123 counters_and_perfcounters_sample (prof);
4125 buffer_lock_excl ();
4127 sync_point (SYNC_POINT_PERIODIC);
4129 buffer_unlock_excl ();
4131 // Are we shutting down?
4132 if (FD_ISSET (prof->pipes [0], &rfds)) {
4134 read (prof->pipes [0], &c, 1);
4138 for (gint i = 0; i < command_sockets->len; i++) {
4139 int fd = g_array_index (command_sockets, int, i);
4141 if (!FD_ISSET (fd, &rfds))
4145 int len = read (fd, buf, sizeof (buf) - 1);
4151 // The other end disconnected.
4152 g_array_remove_index (command_sockets, i);
4160 if (!strcmp (buf, "heapshot\n") && hs_mode_ondemand) {
4161 // Rely on the finalization callback triggering a GC.
4162 heapshot_requested = 1;
4163 mono_gc_finalize_notify ();
4167 if (FD_ISSET (prof->server_socket, &rfds)) {
4168 int fd = accept (prof->server_socket, NULL, NULL);
4171 if (fd >= FD_SETSIZE)
4174 g_array_append_val (command_sockets, fd);
4179 for (gint i = 0; i < command_sockets->len; i++)
4180 close (g_array_index (command_sockets, int, i));
4182 g_array_free (command_sockets, TRUE);
4184 send_log_unsafe (FALSE);
4185 deinit_thread (thread);
4187 mono_thread_info_detach ();
4193 start_helper_thread (MonoProfiler* prof)
4195 if (pipe (prof->pipes) == -1) {
4196 fprintf (stderr, "Cannot create pipe: %s\n", strerror (errno));
4200 prof->server_socket = socket (PF_INET, SOCK_STREAM, 0);
4202 if (prof->server_socket == -1) {
4203 fprintf (stderr, "Cannot create server socket: %s\n", strerror (errno));
4207 struct sockaddr_in server_address;
4209 memset (&server_address, 0, sizeof (server_address));
4210 server_address.sin_family = AF_INET;
4211 server_address.sin_addr.s_addr = INADDR_ANY;
4212 server_address.sin_port = htons (prof->command_port);
4214 if (bind (prof->server_socket, (struct sockaddr *) &server_address, sizeof (server_address)) == -1) {
4215 fprintf (stderr, "Cannot bind server socket on port %d: %s\n", prof->command_port, strerror (errno));
4216 close (prof->server_socket);
4220 if (listen (prof->server_socket, 1) == -1) {
4221 fprintf (stderr, "Cannot listen on server socket: %s\n", strerror (errno));
4222 close (prof->server_socket);
4226 socklen_t slen = sizeof (server_address);
4228 if (getsockname (prof->server_socket, (struct sockaddr *) &server_address, &slen)) {
4229 fprintf (stderr, "Could not get assigned port: %s\n", strerror (errno));
4230 close (prof->server_socket);
4234 prof->command_port = ntohs (server_address.sin_port);
4236 if (!mono_native_thread_create (&prof->helper_thread, helper_thread, prof)) {
4237 fprintf (stderr, "Could not start helper thread\n");
4238 close (prof->server_socket);
4244 free_writer_entry (gpointer p)
4246 mono_lock_free_free (p, WRITER_ENTRY_BLOCK_SIZE);
4250 handle_writer_queue_entry (MonoProfiler *prof)
4252 WriterQueueEntry *entry;
4254 if ((entry = (WriterQueueEntry *) mono_lock_free_queue_dequeue (&prof->writer_queue))) {
4255 if (!entry->methods)
4258 gboolean wrote_methods = FALSE;
4261 * Encode the method events in a temporary log buffer that we
4262 * flush to disk before the main buffer, ensuring that all
4263 * methods have metadata emitted before they're referenced.
4265 * We use a 'proper' thread-local buffer for this as opposed
4266 * to allocating and freeing a buffer by hand because the call
4267 * to mono_method_full_name () below may trigger class load
4268 * events when it retrieves the signature of the method. So a
4269 * thread-local buffer needs to exist when such events occur.
4271 for (guint i = 0; i < entry->methods->len; i++) {
4272 MethodInfo *info = (MethodInfo *) g_ptr_array_index (entry->methods, i);
4274 if (mono_conc_hashtable_lookup (prof->method_table, info->method))
4275 goto free_info; // This method already has metadata emitted.
4278 * Other threads use this hash table to get a general
4279 * idea of whether a method has already been emitted to
4280 * the stream. Due to the way we add to this table, it
4281 * can easily happen that multiple threads queue up the
4282 * same methods, but that's OK since eventually all
4283 * methods will be in this table and the thread-local
4284 * method lists will just be empty for the rest of the
4287 mono_os_mutex_lock (&prof->method_table_mutex);
4288 mono_conc_hashtable_insert (prof->method_table, info->method, info->method);
4289 mono_os_mutex_unlock (&prof->method_table_mutex);
4291 char *name = mono_method_full_name (info->method, 1);
4292 int nlen = strlen (name) + 1;
4293 void *cstart = info->ji ? mono_jit_info_get_code_start (info->ji) : NULL;
4294 int csize = info->ji ? mono_jit_info_get_code_size (info->ji) : 0;
4296 ENTER_LOG (&method_jits_ctr, logbuffer,
4297 EVENT_SIZE /* event */ +
4298 LEB128_SIZE /* method */ +
4299 LEB128_SIZE /* start */ +
4300 LEB128_SIZE /* size */ +
4304 emit_event_time (logbuffer, TYPE_JIT | TYPE_METHOD, info->time);
4305 emit_method_inner (logbuffer, info->method);
4306 emit_ptr (logbuffer, cstart);
4307 emit_value (logbuffer, csize);
4309 memcpy (logbuffer->cursor, name, nlen);
4310 logbuffer->cursor += nlen;
4312 EXIT_LOG_EXPLICIT (NO_SEND);
4316 wrote_methods = TRUE;
4322 g_ptr_array_free (entry->methods, TRUE);
4324 if (wrote_methods) {
4325 MonoProfilerThread *thread = PROF_TLS_GET ();
4327 dump_buffer_threadless (prof, thread->buffer);
4328 init_buffer_state (thread);
4332 dump_buffer (prof, entry->buffer);
4334 mono_thread_hazardous_try_free (entry, free_writer_entry);
4343 writer_thread (void *arg)
4345 MonoProfiler *prof = (MonoProfiler *)arg;
4347 mono_threads_attach_tools_thread ();
4348 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler writer");
4352 MonoProfilerThread *thread = init_thread (prof, FALSE);
4354 while (InterlockedRead (&prof->run_writer_thread)) {
4355 mono_os_sem_wait (&prof->writer_queue_sem, MONO_SEM_FLAGS_NONE);
4356 handle_writer_queue_entry (prof);
4359 /* Drain any remaining entries on shutdown. */
4360 while (handle_writer_queue_entry (prof));
4362 free_buffer (thread->buffer, thread->buffer->size);
4363 deinit_thread (thread);
4365 mono_thread_info_detach ();
4371 start_writer_thread (MonoProfiler* prof)
4373 InterlockedWrite (&prof->run_writer_thread, 1);
4375 if (!mono_native_thread_create (&prof->writer_thread, writer_thread, prof)) {
4376 fprintf (stderr, "Could not start writer thread\n");
4382 reuse_sample_hit (gpointer p)
4384 SampleHit *sample = p;
4386 mono_lock_free_queue_node_unpoison (&sample->node);
4387 mono_lock_free_queue_enqueue (&sample->prof->sample_reuse_queue, &sample->node);
4391 handle_dumper_queue_entry (MonoProfiler *prof)
4395 if ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->dumper_queue))) {
4396 for (int i = 0; i < sample->count; ++i) {
4397 MonoMethod *method = sample->frames [i].method;
4398 MonoDomain *domain = sample->frames [i].domain;
4399 void *address = sample->frames [i].base_address;
4402 g_assert (domain && "What happened to the domain pointer?");
4403 g_assert (address && "What happened to the instruction pointer?");
4405 MonoJitInfo *ji = mono_jit_info_table_find (domain, (char *) address);
4408 sample->frames [i].method = mono_jit_info_get_method (ji);
4412 ENTER_LOG (&sample_hits_ctr, logbuffer,
4413 EVENT_SIZE /* event */ +
4414 BYTE_SIZE /* type */ +
4415 LEB128_SIZE /* tid */ +
4416 LEB128_SIZE /* count */ +
4418 LEB128_SIZE /* ip */
4420 LEB128_SIZE /* managed count */ +
4422 LEB128_SIZE /* method */
4426 emit_event_time (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_HIT, sample->time);
4427 emit_byte (logbuffer, SAMPLE_CYCLES);
4428 emit_ptr (logbuffer, (void *) sample->tid);
4429 emit_value (logbuffer, 1);
4431 // TODO: Actual native unwinding.
4432 for (int i = 0; i < 1; ++i) {
4433 emit_ptr (logbuffer, sample->ip);
4434 add_code_pointer ((uintptr_t) sample->ip);
4437 /* new in data version 6 */
4438 emit_uvalue (logbuffer, sample->count);
4440 for (int i = 0; i < sample->count; ++i)
4441 emit_method (logbuffer, sample->frames [i].method);
4443 EXIT_LOG_EXPLICIT (DO_SEND);
4445 mono_thread_hazardous_try_free (sample, reuse_sample_hit);
4447 dump_unmanaged_coderefs (prof);
4454 dumper_thread (void *arg)
4456 MonoProfiler *prof = (MonoProfiler *)arg;
4458 mono_threads_attach_tools_thread ();
4459 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler dumper");
4461 MonoProfilerThread *thread = init_thread (prof, FALSE);
4463 while (InterlockedRead (&prof->run_dumper_thread)) {
4465 * Flush samples every second so it doesn't seem like the profiler is
4466 * not working if the program is mostly idle.
4468 if (mono_os_sem_timedwait (&prof->dumper_queue_sem, 1000, MONO_SEM_FLAGS_NONE) == MONO_SEM_TIMEDWAIT_RET_TIMEDOUT)
4469 send_log_unsafe (FALSE);
4471 handle_dumper_queue_entry (prof);
4474 /* Drain any remaining entries on shutdown. */
4475 while (handle_dumper_queue_entry (prof));
4477 send_log_unsafe (FALSE);
4478 deinit_thread (thread);
4480 mono_thread_info_detach ();
4486 start_dumper_thread (MonoProfiler* prof)
4488 InterlockedWrite (&prof->run_dumper_thread, 1);
4490 if (!mono_native_thread_create (&prof->dumper_thread, dumper_thread, prof)) {
4491 fprintf (stderr, "Could not start dumper thread\n");
4497 register_counter (const char *name, gint32 *counter)
4499 mono_counters_register (name, MONO_COUNTER_UINT | MONO_COUNTER_PROFILER | MONO_COUNTER_MONOTONIC, counter);
4503 runtime_initialized (MonoProfiler *profiler)
4505 InterlockedWrite (&runtime_inited, 1);
4507 register_counter ("Sample events allocated", &sample_allocations_ctr);
4508 register_counter ("Log buffers allocated", &buffer_allocations_ctr);
4510 register_counter ("Event: Sync points", &sync_points_ctr);
4511 register_counter ("Event: Heap objects", &heap_objects_ctr);
4512 register_counter ("Event: Heap starts", &heap_starts_ctr);
4513 register_counter ("Event: Heap ends", &heap_ends_ctr);
4514 register_counter ("Event: Heap roots", &heap_roots_ctr);
4515 register_counter ("Event: GC events", &gc_events_ctr);
4516 register_counter ("Event: GC resizes", &gc_resizes_ctr);
4517 register_counter ("Event: GC allocations", &gc_allocs_ctr);
4518 register_counter ("Event: GC moves", &gc_moves_ctr);
4519 register_counter ("Event: GC handle creations", &gc_handle_creations_ctr);
4520 register_counter ("Event: GC handle deletions", &gc_handle_deletions_ctr);
4521 register_counter ("Event: GC finalize starts", &finalize_begins_ctr);
4522 register_counter ("Event: GC finalize ends", &finalize_ends_ctr);
4523 register_counter ("Event: GC finalize object starts", &finalize_object_begins_ctr);
4524 register_counter ("Event: GC finalize object ends", &finalize_object_ends_ctr);
4525 register_counter ("Event: Image loads", &image_loads_ctr);
4526 register_counter ("Event: Image unloads", &image_unloads_ctr);
4527 register_counter ("Event: Assembly loads", &assembly_loads_ctr);
4528 register_counter ("Event: Assembly unloads", &assembly_unloads_ctr);
4529 register_counter ("Event: Class loads", &class_loads_ctr);
4530 register_counter ("Event: Class unloads", &class_unloads_ctr);
4531 register_counter ("Event: Method entries", &method_entries_ctr);
4532 register_counter ("Event: Method exits", &method_exits_ctr);
4533 register_counter ("Event: Method exception leaves", &method_exception_exits_ctr);
4534 register_counter ("Event: Method JITs", &method_jits_ctr);
4535 register_counter ("Event: Code buffers", &code_buffers_ctr);
4536 register_counter ("Event: Exception throws", &exception_throws_ctr);
4537 register_counter ("Event: Exception clauses", &exception_clauses_ctr);
4538 register_counter ("Event: Monitor events", &monitor_events_ctr);
4539 register_counter ("Event: Thread starts", &thread_starts_ctr);
4540 register_counter ("Event: Thread ends", &thread_ends_ctr);
4541 register_counter ("Event: Thread names", &thread_names_ctr);
4542 register_counter ("Event: Domain loads", &domain_loads_ctr);
4543 register_counter ("Event: Domain unloads", &domain_unloads_ctr);
4544 register_counter ("Event: Domain names", &domain_names_ctr);
4545 register_counter ("Event: Context loads", &context_loads_ctr);
4546 register_counter ("Event: Context unloads", &context_unloads_ctr);
4547 register_counter ("Event: Sample binaries", &sample_ubins_ctr);
4548 register_counter ("Event: Sample symbols", &sample_usyms_ctr);
4549 register_counter ("Event: Sample hits", &sample_hits_ctr);
4550 register_counter ("Event: Counter descriptors", &counter_descriptors_ctr);
4551 register_counter ("Event: Counter samples", &counter_samples_ctr);
4552 register_counter ("Event: Performance counter descriptors", &perfcounter_descriptors_ctr);
4553 register_counter ("Event: Performance counter samples", &perfcounter_samples_ctr);
4554 register_counter ("Event: Coverage methods", &coverage_methods_ctr);
4555 register_counter ("Event: Coverage statements", &coverage_statements_ctr);
4556 register_counter ("Event: Coverage classes", &coverage_classes_ctr);
4557 register_counter ("Event: Coverage assemblies", &coverage_assemblies_ctr);
4559 counters_init (profiler);
4562 * We must start the helper thread before the writer thread. This is
4563 * because the helper thread sets up the command port which is written to
4564 * the log header by the writer thread.
4566 start_helper_thread (profiler);
4567 start_writer_thread (profiler);
4568 start_dumper_thread (profiler);
4572 create_profiler (const char *args, const char *filename, GPtrArray *filters)
4575 int force_delete = 0;
4577 log_profiler = (MonoProfiler *) g_calloc (1, sizeof (MonoProfiler));
4578 log_profiler->args = pstrdup (args);
4579 log_profiler->command_port = command_port;
4581 if (filename && *filename == '-') {
4584 g_warning ("WARNING: the output:-FILENAME option is deprecated, the profiler now always overrides the output file\n");
4587 //If filename begin with +, append the pid at the end
4588 if (filename && *filename == '+')
4589 filename = g_strdup_printf ("%s.%d", filename + 1, getpid ());
4594 filename = "|mprof-report -";
4596 filename = "output.mlpd";
4597 nf = (char*)filename;
4599 nf = new_filename (filename);
4601 int s = strlen (nf) + 32;
4602 char *p = (char *) g_malloc (s);
4603 snprintf (p, s, "|mprof-report '--out=%s' -", nf);
4609 log_profiler->file = popen (nf + 1, "w");
4610 log_profiler->pipe_output = 1;
4611 } else if (*nf == '#') {
4612 int fd = strtol (nf + 1, NULL, 10);
4613 log_profiler->file = fdopen (fd, "a");
4617 log_profiler->file = fopen (nf, "wb");
4619 if (!log_profiler->file) {
4620 fprintf (stderr, "Cannot create profiler output: %s\n", nf);
4624 #if defined (HAVE_SYS_ZLIB)
4626 log_profiler->gzfile = gzdopen (fileno (log_profiler->file), "wb");
4630 * If you hit this assert while increasing MAX_FRAMES, you need to increase
4631 * SAMPLE_BLOCK_SIZE as well.
4633 g_assert (SAMPLE_SLOT_SIZE (MAX_FRAMES) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (SAMPLE_BLOCK_SIZE));
4635 // FIXME: We should free this stuff too.
4636 mono_lock_free_allocator_init_size_class (&log_profiler->sample_size_class, SAMPLE_SLOT_SIZE (num_frames), SAMPLE_BLOCK_SIZE);
4637 mono_lock_free_allocator_init_allocator (&log_profiler->sample_allocator, &log_profiler->sample_size_class, MONO_MEM_ACCOUNT_PROFILER);
4639 mono_lock_free_queue_init (&log_profiler->sample_reuse_queue);
4641 g_assert (sizeof (WriterQueueEntry) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (WRITER_ENTRY_BLOCK_SIZE));
4643 // FIXME: We should free this stuff too.
4644 mono_lock_free_allocator_init_size_class (&log_profiler->writer_entry_size_class, sizeof (WriterQueueEntry), WRITER_ENTRY_BLOCK_SIZE);
4645 mono_lock_free_allocator_init_allocator (&log_profiler->writer_entry_allocator, &log_profiler->writer_entry_size_class, MONO_MEM_ACCOUNT_PROFILER);
4647 mono_lock_free_queue_init (&log_profiler->writer_queue);
4648 mono_os_sem_init (&log_profiler->writer_queue_sem, 0);
4650 mono_lock_free_queue_init (&log_profiler->dumper_queue);
4651 mono_os_sem_init (&log_profiler->dumper_queue_sem, 0);
4653 mono_os_mutex_init (&log_profiler->method_table_mutex);
4654 log_profiler->method_table = mono_conc_hashtable_new (NULL, NULL);
4657 coverage_init (log_profiler);
4658 log_profiler->coverage_filters = filters;
4660 log_profiler->startup_time = current_time ();
4664 * declaration to silence the compiler: this is the entry point that
4665 * mono will load from the shared library and call.
4668 mono_profiler_startup (const char *desc);
4671 mono_profiler_startup_log (const char *desc);
4674 * this is the entry point that will be used when the profiler
4675 * is embedded inside the main executable.
4678 mono_profiler_startup_log (const char *desc)
4680 mono_profiler_startup (desc);
4684 mono_profiler_startup (const char *desc)
4686 GPtrArray *filters = NULL;
4688 proflog_parse_args (&config, desc [3] == ':' ? desc + 4 : "");
4690 //XXX maybe later cleanup to use config directly
4691 nocalls = !(config.effective_mask & PROFLOG_CALL_EVENTS);
4692 no_counters = !(config.effective_mask & PROFLOG_COUNTER_EVENTS);
4693 do_report = config.do_report;
4694 do_debug = config.do_debug;
4695 do_heap_shot = (config.effective_mask & PROFLOG_HEAPSHOT_FEATURE);
4696 hs_mode_ondemand = config.hs_mode_ondemand;
4697 hs_mode_ms = config.hs_mode_ms;
4698 hs_mode_gc = config.hs_mode_gc;
4699 do_mono_sample = (config.effective_mask & PROFLOG_SAMPLING_FEATURE);
4700 use_zip = config.use_zip;
4701 command_port = config.command_port;
4702 num_frames = config.num_frames;
4703 notraces = config.notraces;
4704 max_allocated_sample_hits = config.max_allocated_sample_hits;
4705 max_call_depth = config.max_call_depth;
4706 do_coverage = (config.effective_mask & PROFLOG_CODE_COV_FEATURE);
4707 debug_coverage = config.debug_coverage;
4708 only_coverage = config.only_coverage;
4710 if (config.cov_filter_files) {
4711 filters = g_ptr_array_new ();
4713 for (i = 0; i < config.cov_filter_files->len; ++i) {
4714 const char *name = config.cov_filter_files->pdata [i];
4715 parse_cov_filter_file (filters, name);
4723 create_profiler (desc, config.output_filename, filters);
4725 mono_lls_init (&profiler_thread_list, NULL);
4727 //This two events are required for the profiler to work
4728 int events = MONO_PROFILE_THREADS | MONO_PROFILE_GC;
4730 //Required callbacks
4731 mono_profiler_install (log_profiler, log_shutdown);
4732 mono_profiler_install_runtime_initialized (runtime_initialized);
4734 mono_profiler_install_gc (gc_event, gc_resize);
4735 mono_profiler_install_thread (thread_start, thread_end);
4737 //It's questionable whether we actually want this to be mandatory, maybe put it behind the actual event?
4738 mono_profiler_install_thread_name (thread_name);
4741 if (config.effective_mask & PROFLOG_DOMAIN_EVENTS) {
4742 events |= MONO_PROFILE_APPDOMAIN_EVENTS;
4743 mono_profiler_install_appdomain (NULL, domain_loaded, domain_unloaded, NULL);
4744 mono_profiler_install_appdomain_name (domain_name);
4747 if (config.effective_mask & PROFLOG_ASSEMBLY_EVENTS) {
4748 events |= MONO_PROFILE_ASSEMBLY_EVENTS;
4749 mono_profiler_install_assembly (NULL, assembly_loaded, assembly_unloaded, NULL);
4752 if (config.effective_mask & PROFLOG_MODULE_EVENTS) {
4753 events |= MONO_PROFILE_MODULE_EVENTS;
4754 mono_profiler_install_module (NULL, image_loaded, image_unloaded, NULL);
4757 if (config.effective_mask & PROFLOG_CLASS_EVENTS) {
4758 events |= MONO_PROFILE_CLASS_EVENTS;
4759 mono_profiler_install_class (NULL, class_loaded, class_unloaded, NULL);
4762 if (config.effective_mask & PROFLOG_JIT_COMPILATION_EVENTS) {
4763 events |= MONO_PROFILE_JIT_COMPILATION;
4764 mono_profiler_install_jit_end (method_jitted);
4765 mono_profiler_install_code_buffer_new (code_buffer_new);
4768 if (config.effective_mask & PROFLOG_EXCEPTION_EVENTS) {
4769 events |= MONO_PROFILE_EXCEPTIONS;
4770 mono_profiler_install_exception (throw_exc, method_exc_leave, NULL);
4771 mono_profiler_install_exception_clause (clause_exc);
4774 if (config.effective_mask & PROFLOG_ALLOCATION_EVENTS) {
4775 events |= MONO_PROFILE_ALLOCATIONS;
4776 mono_profiler_install_allocation (gc_alloc);
4779 //PROFLOG_GC_EVENTS is mandatory
4780 //PROFLOG_THREAD_EVENTS is mandatory
4782 if (config.effective_mask & PROFLOG_CALL_EVENTS) {
4783 events |= MONO_PROFILE_ENTER_LEAVE;
4784 mono_profiler_install_enter_leave (method_enter, method_leave);
4787 if (config.effective_mask & PROFLOG_INS_COVERAGE_EVENTS) {
4788 events |= MONO_PROFILE_INS_COVERAGE;
4789 mono_profiler_install_coverage_filter (coverage_filter);
4792 //XXX should we check for PROFLOG_SAMPLING_FEATURE instead??
4793 if (config.effective_mask & PROFLOG_SAMPLING_EVENTS) {
4794 events |= MONO_PROFILE_STATISTICAL;
4795 mono_profiler_set_statistical_mode (config.sampling_mode, config.sample_freq);
4796 mono_profiler_install_statistical (mono_sample_hit);
4799 if (config.effective_mask & PROFLOG_MONITOR_EVENTS) {
4800 events |= MONO_PROFILE_MONITOR_EVENTS;
4801 mono_profiler_install_monitor (monitor_event);
4804 if (config.effective_mask & PROFLOG_GC_MOVES_EVENTS) {
4805 events |= MONO_PROFILE_GC_MOVES;
4806 mono_profiler_install_gc_moves (gc_moves);
4809 // TODO split those in two profiler events
4810 if (config.effective_mask & (PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_HANDLE_EVENTS)) {
4811 events |= MONO_PROFILE_GC_ROOTS;
4812 mono_profiler_install_gc_roots (
4813 config.effective_mask & (PROFLOG_GC_HANDLE_EVENTS) ? gc_handle : NULL,
4814 (config.effective_mask & PROFLOG_GC_ROOT_EVENTS) ? gc_roots : NULL);
4817 if (config.effective_mask & PROFLOG_CONTEXT_EVENTS) {
4818 events |= MONO_PROFILE_CONTEXT_EVENTS;
4819 mono_profiler_install_context (context_loaded, context_unloaded);
4822 if (config.effective_mask & PROFLOG_FINALIZATION_EVENTS) {
4823 events |= MONO_PROFILE_GC_FINALIZATION;
4824 mono_profiler_install_gc_finalize (finalize_begin, finalize_object_begin, finalize_object_end, finalize_end);
4825 } else if (ENABLED (PROFLOG_HEAPSHOT_FEATURE) && config.hs_mode_ondemand) {
4826 //On Demand heapshot uses the finalizer thread to force a collection and thus a heapshot
4827 events |= MONO_PROFILE_GC_FINALIZATION;
4828 mono_profiler_install_gc_finalize (NULL, NULL, NULL, finalize_end);
4831 //PROFLOG_COUNTER_EVENTS is a pseudo event controled by the no_counters global var
4832 //PROFLOG_GC_HANDLE_EVENTS is handled together with PROFLOG_GC_ROOT_EVENTS
4834 mono_profiler_set_events ((MonoProfileFlags)events);