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`?
482 } MonoProfilerThread;
487 return (uintptr_t) mono_native_thread_id_get ();
494 return (uintptr_t) GetCurrentProcessId ();
496 return (uintptr_t) getpid ();
501 static mach_timebase_info_data_t timebase_info;
502 #elif defined (HOST_WIN32)
503 static LARGE_INTEGER pcounter_freq;
506 #define TICKS_PER_SEC 1000000000LL
512 uint64_t time = mach_absolute_time ();
514 time *= timebase_info.numer;
515 time /= timebase_info.denom;
518 #elif defined (HOST_WIN32)
521 QueryPerformanceCounter (&value);
523 return value.QuadPart * TICKS_PER_SEC / pcounter_freq.QuadPart;
524 #elif defined (CLOCK_MONOTONIC)
525 struct timespec tspec;
527 clock_gettime (CLOCK_MONOTONIC, &tspec);
529 return ((uint64_t) tspec.tv_sec * TICKS_PER_SEC + tspec.tv_nsec);
533 gettimeofday (&tv, NULL);
535 return ((uint64_t) tv.tv_sec * TICKS_PER_SEC + tv.tv_usec * 1000);
539 static int timer_overhead;
545 mach_timebase_info (&timebase_info);
546 #elif defined (HOST_WIN32)
547 QueryPerformanceFrequency (&pcounter_freq);
550 uint64_t time_start = current_time ();
552 for (int i = 0; i < 256; ++i)
555 uint64_t time_end = current_time ();
557 timer_overhead = (time_end - time_start) / 256;
561 * These macros should be used when writing an event to a log buffer. They
562 * take care of a bunch of stuff that can be repetitive and error-prone, such
563 * as attaching the current thread, acquiring/releasing the buffer lock,
564 * incrementing the event counter, expanding the log buffer, etc. They also
565 * create a scope so that it's harder to leak the LogBuffer pointer, which can
566 * be problematic as the pointer is unstable when the buffer lock isn't
569 * If the calling thread is already attached, these macros will not alter its
570 * attach mode (i.e. whether it's added to the LLS). If the thread is not
571 * attached, init_thread () will be called with add_to_lls = TRUE.
574 #define ENTER_LOG(COUNTER, BUFFER, SIZE) \
576 MonoProfilerThread *thread__ = get_thread (); \
577 if (thread__->attached) \
579 g_assert (!thread__->busy && "Why are we trying to write a new event while already writing one?"); \
580 thread__->busy = TRUE; \
581 InterlockedIncrement ((COUNTER)); \
582 LogBuffer *BUFFER = ensure_logbuf_unsafe (thread__, (SIZE))
584 #define EXIT_LOG_EXPLICIT(SEND) \
585 thread__->busy = FALSE; \
587 send_log_unsafe (TRUE); \
588 if (thread__->attached) \
592 // Pass these to EXIT_LOG_EXPLICIT () for easier reading.
594 #define NO_SEND FALSE
596 #define EXIT_LOG EXIT_LOG_EXPLICIT (DO_SEND)
598 static volatile gint32 buffer_rwlock_count;
599 static volatile gpointer buffer_rwlock_exclusive;
601 // Can be used recursively.
606 * If the thread holding the exclusive lock tries to modify the
607 * reader count, just make it a no-op. This way, we also avoid
608 * invoking the GC safe point macros below, which could break if
609 * done from a thread that is currently the initiator of STW.
611 * In other words, we rely on the fact that the GC thread takes
612 * the exclusive lock in the gc_event () callback when the world
615 if (InterlockedReadPointer (&buffer_rwlock_exclusive) != (gpointer) thread_id ()) {
618 while (InterlockedReadPointer (&buffer_rwlock_exclusive))
619 mono_thread_info_yield ();
621 InterlockedIncrement (&buffer_rwlock_count);
626 mono_memory_barrier ();
632 mono_memory_barrier ();
634 // See the comment in buffer_lock ().
635 if (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id ())
638 g_assert (InterlockedRead (&buffer_rwlock_count) && "Why are we trying to decrement a zero reader count?");
640 InterlockedDecrement (&buffer_rwlock_count);
643 // Cannot be used recursively.
645 buffer_lock_excl (void)
647 gpointer tid = (gpointer) thread_id ();
649 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) != tid && "Why are we taking the exclusive lock twice?");
653 while (InterlockedCompareExchangePointer (&buffer_rwlock_exclusive, tid, 0))
654 mono_thread_info_yield ();
656 while (InterlockedRead (&buffer_rwlock_count))
657 mono_thread_info_yield ();
661 mono_memory_barrier ();
665 buffer_unlock_excl (void)
667 mono_memory_barrier ();
669 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) && "Why is the exclusive lock not held?");
670 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why does another thread hold the exclusive lock?");
671 g_assert (!InterlockedRead (&buffer_rwlock_count) && "Why are there readers when the exclusive lock is held?");
673 InterlockedWritePointer (&buffer_rwlock_exclusive, NULL);
676 typedef struct _BinaryObject BinaryObject;
677 struct _BinaryObject {
683 static MonoProfiler *log_profiler;
685 struct _MonoProfiler {
687 #if defined (HAVE_SYS_ZLIB)
691 uint64_t startup_time;
696 MonoNativeThreadId helper_thread;
697 MonoNativeThreadId writer_thread;
698 MonoNativeThreadId dumper_thread;
699 volatile gint32 run_writer_thread;
700 MonoLockFreeAllocSizeClass writer_entry_size_class;
701 MonoLockFreeAllocator writer_entry_allocator;
702 MonoLockFreeQueue writer_queue;
703 MonoSemType writer_queue_sem;
704 MonoConcurrentHashTable *method_table;
705 mono_mutex_t method_table_mutex;
706 volatile gint32 run_dumper_thread;
707 MonoLockFreeQueue dumper_queue;
708 MonoSemType dumper_queue_sem;
709 MonoLockFreeAllocSizeClass sample_size_class;
710 MonoLockFreeAllocator sample_allocator;
711 MonoLockFreeQueue sample_reuse_queue;
712 BinaryObject *binary_objects;
713 GPtrArray *coverage_filters;
717 MonoLockFreeQueueNode node;
722 #define WRITER_ENTRY_BLOCK_SIZE (mono_pagesize ())
730 // Do not use these TLS macros directly unless you know what you're doing.
734 #define PROF_TLS_SET(VAL) (TlsSetValue (profiler_tls, (VAL)))
735 #define PROF_TLS_GET() ((MonoProfilerThread *) TlsGetValue (profiler_tls))
736 #define PROF_TLS_INIT() (profiler_tls = TlsAlloc ())
737 #define PROF_TLS_FREE() (TlsFree (profiler_tls))
739 static DWORD profiler_tls;
743 #define PROF_TLS_SET(VAL) (profiler_tls = (VAL))
744 #define PROF_TLS_GET() (profiler_tls)
745 #define PROF_TLS_INIT()
746 #define PROF_TLS_FREE()
748 static __thread MonoProfilerThread *profiler_tls;
752 #define PROF_TLS_SET(VAL) (pthread_setspecific (profiler_tls, (VAL)))
753 #define PROF_TLS_GET() ((MonoProfilerThread *) pthread_getspecific (profiler_tls))
754 #define PROF_TLS_INIT() (pthread_key_create (&profiler_tls, NULL))
755 #define PROF_TLS_FREE() (pthread_key_delete (profiler_tls))
757 static pthread_key_t profiler_tls;
762 pstrdup (const char *s)
764 int len = strlen (s) + 1;
765 char *p = (char *) g_malloc (len);
771 alloc_buffer (int size)
773 return mono_valloc (NULL, size, MONO_MMAP_READ | MONO_MMAP_WRITE | MONO_MMAP_ANON | MONO_MMAP_PRIVATE, MONO_MEM_ACCOUNT_PROFILER);
777 free_buffer (void *buf, int size)
779 mono_vfree (buf, size, MONO_MEM_ACCOUNT_PROFILER);
783 create_buffer (uintptr_t tid, int bytes)
785 LogBuffer* buf = (LogBuffer *) alloc_buffer (MAX (BUFFER_SIZE, bytes));
787 InterlockedIncrement (&buffer_allocations_ctr);
789 buf->size = BUFFER_SIZE;
790 buf->time_base = current_time ();
791 buf->last_time = buf->time_base;
792 buf->buf_end = (unsigned char *) buf + buf->size;
793 buf->cursor = buf->buf;
794 buf->thread_id = tid;
800 * Must be called with the reader lock held if thread is the current thread, or
801 * the exclusive lock if thread is a different thread. However, if thread is
802 * the current thread, and init_thread () was called with add_to_lls = FALSE,
803 * then no locking is necessary.
806 init_buffer_state (MonoProfilerThread *thread)
808 thread->buffer = create_buffer (thread->node.key, 0);
809 thread->methods = NULL;
813 clear_hazard_pointers (MonoThreadHazardPointers *hp)
815 mono_hazard_pointer_clear (hp, 0);
816 mono_hazard_pointer_clear (hp, 1);
817 mono_hazard_pointer_clear (hp, 2);
820 static MonoProfilerThread *
821 init_thread (MonoProfiler *prof, gboolean add_to_lls)
823 MonoProfilerThread *thread = PROF_TLS_GET ();
826 * Sometimes we may try to initialize a thread twice. One example is the
827 * main thread: We initialize it when setting up the profiler, but we will
828 * also get a thread_start () callback for it. Another example is when
829 * attaching new threads to the runtime: We may get a gc_alloc () callback
830 * for that thread's thread object (where we initialize it), soon followed
831 * by a thread_start () callback.
833 * These cases are harmless anyhow. Just return if we've already done the
834 * initialization work.
839 thread = g_malloc (sizeof (MonoProfilerThread));
840 thread->node.key = thread_id ();
841 thread->profiler = prof;
842 thread->attached = add_to_lls;
843 thread->call_depth = 0;
845 thread->ended = FALSE;
847 init_buffer_state (thread);
850 * Some internal profiler threads don't need to be cleaned up
851 * by the main thread on shutdown.
854 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
855 g_assert (mono_lls_insert (&profiler_thread_list, hp, &thread->node) && "Why can't we insert the thread in the LLS?");
856 clear_hazard_pointers (hp);
859 PROF_TLS_SET (thread);
864 // Only valid if init_thread () was called with add_to_lls = FALSE.
866 deinit_thread (MonoProfilerThread *thread)
868 g_assert (!thread->attached && "Why are we manually freeing an attached thread?");
874 static MonoProfilerThread *
877 return init_thread (log_profiler, TRUE);
880 // Only valid if init_thread () was called with add_to_lls = FALSE.
882 ensure_logbuf_unsafe (MonoProfilerThread *thread, int bytes)
884 LogBuffer *old = thread->buffer;
886 if (old && old->cursor + bytes < old->buf_end)
889 LogBuffer *new_ = create_buffer (thread->node.key, bytes);
891 thread->buffer = new_;
897 encode_uleb128 (uint64_t value, uint8_t *buf, uint8_t **endbuf)
902 uint8_t b = value & 0x7f;
905 if (value != 0) /* more bytes to come */
915 encode_sleb128 (intptr_t value, uint8_t *buf, uint8_t **endbuf)
918 int negative = (value < 0);
919 unsigned int size = sizeof (intptr_t) * 8;
927 /* the following is unnecessary if the
928 * implementation of >>= uses an arithmetic rather
929 * than logical shift for a signed left operand
933 value |= - ((intptr_t) 1 <<(size - 7));
935 /* sign bit of byte is second high order bit (0x40) */
936 if ((value == 0 && !(byte & 0x40)) ||
937 (value == -1 && (byte & 0x40)))
949 emit_byte (LogBuffer *logbuffer, int value)
951 logbuffer->cursor [0] = value;
954 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
958 emit_value (LogBuffer *logbuffer, int value)
960 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
962 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
966 emit_time (LogBuffer *logbuffer, uint64_t value)
968 uint64_t tdiff = value - logbuffer->last_time;
969 encode_uleb128 (tdiff, logbuffer->cursor, &logbuffer->cursor);
970 logbuffer->last_time = value;
972 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
976 emit_event_time (LogBuffer *logbuffer, int event, uint64_t time)
978 emit_byte (logbuffer, event);
979 emit_time (logbuffer, time);
983 emit_event (LogBuffer *logbuffer, int event)
985 emit_event_time (logbuffer, event, current_time ());
989 emit_svalue (LogBuffer *logbuffer, int64_t value)
991 encode_sleb128 (value, logbuffer->cursor, &logbuffer->cursor);
993 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
997 emit_uvalue (LogBuffer *logbuffer, uint64_t value)
999 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
1001 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1005 emit_ptr (LogBuffer *logbuffer, void *ptr)
1007 if (!logbuffer->ptr_base)
1008 logbuffer->ptr_base = (uintptr_t) ptr;
1010 emit_svalue (logbuffer, (intptr_t) ptr - logbuffer->ptr_base);
1012 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1016 emit_method_inner (LogBuffer *logbuffer, void *method)
1018 if (!logbuffer->method_base) {
1019 logbuffer->method_base = (intptr_t) method;
1020 logbuffer->last_method = (intptr_t) method;
1023 encode_sleb128 ((intptr_t) ((char *) method - (char *) logbuffer->last_method), logbuffer->cursor, &logbuffer->cursor);
1024 logbuffer->last_method = (intptr_t) method;
1026 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1030 register_method_local (MonoMethod *method, MonoJitInfo *ji)
1032 MonoProfilerThread *thread = get_thread ();
1034 if (!mono_conc_hashtable_lookup (thread->profiler->method_table, method)) {
1035 MethodInfo *info = (MethodInfo *) g_malloc (sizeof (MethodInfo));
1037 info->method = method;
1039 info->time = current_time ();
1043 GPtrArray *arr = thread->methods ? thread->methods : (thread->methods = g_ptr_array_new ());
1044 g_ptr_array_add (arr, info);
1051 emit_method (LogBuffer *logbuffer, MonoMethod *method)
1053 register_method_local (method, NULL);
1054 emit_method_inner (logbuffer, method);
1058 emit_obj (LogBuffer *logbuffer, void *ptr)
1060 if (!logbuffer->obj_base)
1061 logbuffer->obj_base = (uintptr_t) ptr >> 3;
1063 emit_svalue (logbuffer, ((uintptr_t) ptr >> 3) - logbuffer->obj_base);
1065 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1069 emit_string (LogBuffer *logbuffer, const char *str, size_t size)
1073 for (; i < size; i++) {
1076 emit_byte (logbuffer, str [i]);
1079 emit_byte (logbuffer, '\0');
1083 emit_double (LogBuffer *logbuffer, double value)
1086 unsigned char buffer[8];
1087 memcpy (buffer, &value, 8);
1088 #if G_BYTE_ORDER == G_BIG_ENDIAN
1089 for (i = 7; i >= 0; i--)
1091 for (i = 0; i < 8; i++)
1093 emit_byte (logbuffer, buffer[i]);
1097 write_int16 (char *buf, int32_t value)
1100 for (i = 0; i < 2; ++i) {
1108 write_int32 (char *buf, int32_t value)
1111 for (i = 0; i < 4; ++i) {
1119 write_int64 (char *buf, int64_t value)
1122 for (i = 0; i < 8; ++i) {
1130 write_header_string (char *p, const char *str)
1132 size_t len = strlen (str) + 1;
1134 p = write_int32 (p, len);
1141 dump_header (MonoProfiler *profiler)
1143 const char *args = profiler->args;
1144 const char *arch = mono_config_get_cpu ();
1145 const char *os = mono_config_get_os ();
1147 char *hbuf = g_malloc (
1148 sizeof (gint32) /* header id */ +
1149 sizeof (gint8) /* major version */ +
1150 sizeof (gint8) /* minor version */ +
1151 sizeof (gint8) /* data version */ +
1152 sizeof (gint8) /* word size */ +
1153 sizeof (gint64) /* startup time */ +
1154 sizeof (gint32) /* timer overhead */ +
1155 sizeof (gint32) /* flags */ +
1156 sizeof (gint32) /* process id */ +
1157 sizeof (gint16) /* command port */ +
1158 sizeof (gint32) + strlen (args) + 1 /* arguments */ +
1159 sizeof (gint32) + strlen (arch) + 1 /* architecture */ +
1160 sizeof (gint32) + strlen (os) + 1 /* operating system */
1164 p = write_int32 (p, LOG_HEADER_ID);
1165 *p++ = LOG_VERSION_MAJOR;
1166 *p++ = LOG_VERSION_MINOR;
1167 *p++ = LOG_DATA_VERSION;
1168 *p++ = sizeof (void *);
1169 p = write_int64 (p, ((uint64_t) time (NULL)) * 1000);
1170 p = write_int32 (p, timer_overhead);
1171 p = write_int32 (p, 0); /* flags */
1172 p = write_int32 (p, process_id ());
1173 p = write_int16 (p, profiler->command_port);
1174 p = write_header_string (p, args);
1175 p = write_header_string (p, arch);
1176 p = write_header_string (p, os);
1178 #if defined (HAVE_SYS_ZLIB)
1179 if (profiler->gzfile) {
1180 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1184 fwrite (hbuf, p - hbuf, 1, profiler->file);
1185 fflush (profiler->file);
1192 * Must be called with the reader lock held if thread is the current thread, or
1193 * the exclusive lock if thread is a different thread. However, if thread is
1194 * the current thread, and init_thread () was called with add_to_lls = FALSE,
1195 * then no locking is necessary.
1198 send_buffer (MonoProfilerThread *thread)
1200 WriterQueueEntry *entry = mono_lock_free_alloc (&thread->profiler->writer_entry_allocator);
1201 entry->methods = thread->methods;
1202 entry->buffer = thread->buffer;
1204 mono_lock_free_queue_node_init (&entry->node, FALSE);
1206 mono_lock_free_queue_enqueue (&thread->profiler->writer_queue, &entry->node);
1207 mono_os_sem_post (&thread->profiler->writer_queue_sem);
1211 free_thread (gpointer p)
1213 MonoProfilerThread *thread = p;
1215 if (!thread->ended) {
1217 * The thread is being cleaned up by the main thread during
1218 * shutdown. This typically happens for internal runtime
1219 * threads. We need to synthesize a thread end event.
1222 InterlockedIncrement (&thread_ends_ctr);
1224 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
1225 LogBuffer *buf = ensure_logbuf_unsafe (thread,
1226 EVENT_SIZE /* event */ +
1227 BYTE_SIZE /* type */ +
1228 LEB128_SIZE /* tid */
1231 emit_event (buf, TYPE_END_UNLOAD | TYPE_METADATA);
1232 emit_byte (buf, TYPE_THREAD);
1233 emit_ptr (buf, (void *) thread->node.key);
1237 send_buffer (thread);
1243 remove_thread (MonoProfilerThread *thread)
1245 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
1247 if (mono_lls_remove (&profiler_thread_list, hp, &thread->node))
1248 mono_thread_hazardous_try_free (thread, free_thread);
1250 clear_hazard_pointers (hp);
1254 dump_buffer (MonoProfiler *profiler, LogBuffer *buf)
1260 dump_buffer (profiler, buf->next);
1262 if (buf->cursor - buf->buf) {
1263 p = write_int32 (p, BUF_ID);
1264 p = write_int32 (p, buf->cursor - buf->buf);
1265 p = write_int64 (p, buf->time_base);
1266 p = write_int64 (p, buf->ptr_base);
1267 p = write_int64 (p, buf->obj_base);
1268 p = write_int64 (p, buf->thread_id);
1269 p = write_int64 (p, buf->method_base);
1271 #if defined (HAVE_SYS_ZLIB)
1272 if (profiler->gzfile) {
1273 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1274 gzwrite (profiler->gzfile, buf->buf, buf->cursor - buf->buf);
1278 fwrite (hbuf, p - hbuf, 1, profiler->file);
1279 fwrite (buf->buf, buf->cursor - buf->buf, 1, profiler->file);
1280 fflush (profiler->file);
1284 free_buffer (buf, buf->size);
1288 dump_buffer_threadless (MonoProfiler *profiler, LogBuffer *buf)
1290 for (LogBuffer *iter = buf; iter; iter = iter->next)
1291 iter->thread_id = 0;
1293 dump_buffer (profiler, buf);
1296 // Only valid if init_thread () was called with add_to_lls = FALSE.
1298 send_log_unsafe (gboolean if_needed)
1300 MonoProfilerThread *thread = PROF_TLS_GET ();
1302 if (!if_needed || (if_needed && thread->buffer->next)) {
1303 if (!thread->attached)
1304 for (LogBuffer *iter = thread->buffer; iter; iter = iter->next)
1305 iter->thread_id = 0;
1307 send_buffer (thread);
1308 init_buffer_state (thread);
1312 // Assumes that the exclusive lock is held.
1314 sync_point_flush (void)
1316 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why don't we hold the exclusive lock?");
1318 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
1319 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
1321 send_buffer (thread);
1322 init_buffer_state (thread);
1323 } MONO_LLS_FOREACH_SAFE_END
1326 // Assumes that the exclusive lock is held.
1328 sync_point_mark (MonoProfilerSyncPointType type)
1330 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why don't we hold the exclusive lock?");
1332 ENTER_LOG (&sync_points_ctr, logbuffer,
1333 EVENT_SIZE /* event */ +
1334 LEB128_SIZE /* type */
1337 emit_event (logbuffer, TYPE_META | TYPE_SYNC_POINT);
1338 emit_byte (logbuffer, type);
1340 EXIT_LOG_EXPLICIT (NO_SEND);
1342 send_log_unsafe (FALSE);
1345 // Assumes that the exclusive lock is held.
1347 sync_point (MonoProfilerSyncPointType type)
1349 sync_point_flush ();
1350 sync_point_mark (type);
1354 gc_reference (MonoObject *obj, MonoClass *klass, uintptr_t size, uintptr_t num, MonoObject **refs, uintptr_t *offsets, void *data)
1356 /* account for object alignment in the heap */
1360 ENTER_LOG (&heap_objects_ctr, logbuffer,
1361 EVENT_SIZE /* event */ +
1362 LEB128_SIZE /* obj */ +
1363 LEB128_SIZE /* klass */ +
1364 LEB128_SIZE /* size */ +
1365 LEB128_SIZE /* num */ +
1367 LEB128_SIZE /* offset */ +
1368 LEB128_SIZE /* ref */
1372 emit_event (logbuffer, TYPE_HEAP_OBJECT | TYPE_HEAP);
1373 emit_obj (logbuffer, obj);
1374 emit_ptr (logbuffer, klass);
1375 emit_value (logbuffer, size);
1376 emit_value (logbuffer, num);
1378 uintptr_t last_offset = 0;
1380 for (int i = 0; i < num; ++i) {
1381 emit_value (logbuffer, offsets [i] - last_offset);
1382 last_offset = offsets [i];
1383 emit_obj (logbuffer, refs [i]);
1386 EXIT_LOG_EXPLICIT (DO_SEND);
1391 static unsigned int hs_mode_ms = 0;
1392 static unsigned int hs_mode_gc = 0;
1393 static unsigned int hs_mode_ondemand = 0;
1394 static unsigned int gc_count = 0;
1395 static uint64_t last_hs_time = 0;
1396 static gboolean do_heap_walk = FALSE;
1397 static gboolean ignore_heap_events;
1400 gc_roots (MonoProfiler *prof, int num, void **objects, int *root_types, uintptr_t *extra_info)
1402 if (ignore_heap_events)
1405 ENTER_LOG (&heap_roots_ctr, logbuffer,
1406 EVENT_SIZE /* event */ +
1407 LEB128_SIZE /* num */ +
1408 LEB128_SIZE /* collections */ +
1410 LEB128_SIZE /* object */ +
1411 LEB128_SIZE /* root type */ +
1412 LEB128_SIZE /* extra info */
1416 emit_event (logbuffer, TYPE_HEAP_ROOT | TYPE_HEAP);
1417 emit_value (logbuffer, num);
1418 emit_value (logbuffer, mono_gc_collection_count (mono_gc_max_generation ()));
1420 for (int i = 0; i < num; ++i) {
1421 emit_obj (logbuffer, objects [i]);
1422 emit_byte (logbuffer, root_types [i]);
1423 emit_value (logbuffer, extra_info [i]);
1426 EXIT_LOG_EXPLICIT (DO_SEND);
1431 trigger_on_demand_heapshot (void)
1433 if (heapshot_requested)
1434 mono_gc_collect (mono_gc_max_generation ());
1437 #define ALL_GC_EVENTS_MASK (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_EVENTS | PROFLOG_HEAPSHOT_FEATURE)
1440 gc_event (MonoProfiler *profiler, MonoGCEvent ev, int generation)
1442 if (ev == MONO_GC_EVENT_START) {
1443 uint64_t now = current_time ();
1445 if (hs_mode_ms && (now - last_hs_time) / 1000 * 1000 >= hs_mode_ms)
1446 do_heap_walk = TRUE;
1447 else if (hs_mode_gc && !(gc_count % hs_mode_gc))
1448 do_heap_walk = TRUE;
1449 else if (hs_mode_ondemand)
1450 do_heap_walk = heapshot_requested;
1451 else if (!hs_mode_ms && !hs_mode_gc && generation == mono_gc_max_generation ())
1452 do_heap_walk = TRUE;
1454 //If using heapshot, ignore events for collections we don't care
1455 if (ENABLED (PROFLOG_HEAPSHOT_FEATURE)) {
1456 // Ignore events generated during the collection itself (IE GC ROOTS)
1457 ignore_heap_events = !do_heap_walk;
1462 if (ENABLED (PROFLOG_GC_EVENTS)) {
1463 ENTER_LOG (&gc_events_ctr, logbuffer,
1464 EVENT_SIZE /* event */ +
1465 BYTE_SIZE /* gc event */ +
1466 BYTE_SIZE /* generation */
1469 emit_event (logbuffer, TYPE_GC_EVENT | TYPE_GC);
1470 emit_byte (logbuffer, ev);
1471 emit_byte (logbuffer, generation);
1473 EXIT_LOG_EXPLICIT (NO_SEND);
1477 case MONO_GC_EVENT_START:
1478 if (generation == mono_gc_max_generation ())
1482 case MONO_GC_EVENT_PRE_STOP_WORLD_LOCKED:
1484 * Ensure that no thread can be in the middle of writing to
1485 * a buffer when the world stops...
1487 buffer_lock_excl ();
1489 case MONO_GC_EVENT_POST_STOP_WORLD:
1491 * ... So that we now have a consistent view of all buffers.
1492 * This allows us to flush them. We need to do this because
1493 * they may contain object allocation events that need to be
1494 * committed to the log file before any object move events
1495 * that will be produced during this GC.
1497 if (ENABLED (ALL_GC_EVENTS_MASK))
1498 sync_point (SYNC_POINT_WORLD_STOP);
1501 * All heap events are surrounded by a HEAP_START and a HEAP_ENV event.
1502 * Right now, that's the case for GC Moves, GC Roots or heapshots.
1504 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1505 ENTER_LOG (&heap_starts_ctr, logbuffer,
1506 EVENT_SIZE /* event */
1509 emit_event (logbuffer, TYPE_HEAP_START | TYPE_HEAP);
1511 EXIT_LOG_EXPLICIT (DO_SEND);
1515 case MONO_GC_EVENT_PRE_START_WORLD:
1516 if (do_heap_shot && do_heap_walk)
1517 mono_gc_walk_heap (0, gc_reference, NULL);
1519 /* Matching HEAP_END to the HEAP_START from above */
1520 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1521 ENTER_LOG (&heap_ends_ctr, logbuffer,
1522 EVENT_SIZE /* event */
1525 emit_event (logbuffer, TYPE_HEAP_END | TYPE_HEAP);
1527 EXIT_LOG_EXPLICIT (DO_SEND);
1530 if (do_heap_shot && do_heap_walk) {
1531 do_heap_walk = FALSE;
1532 heapshot_requested = 0;
1533 last_hs_time = current_time ();
1537 * Similarly, we must now make sure that any object moves
1538 * written to the GC thread's buffer are flushed. Otherwise,
1539 * object allocation events for certain addresses could come
1540 * after the move events that made those addresses available.
1542 if (ENABLED (ALL_GC_EVENTS_MASK))
1543 sync_point_mark (SYNC_POINT_WORLD_START);
1545 case MONO_GC_EVENT_POST_START_WORLD_UNLOCKED:
1547 * Finally, it is safe to allow other threads to write to
1548 * their buffers again.
1550 buffer_unlock_excl ();
1558 gc_resize (MonoProfiler *profiler, int64_t new_size)
1560 ENTER_LOG (&gc_resizes_ctr, logbuffer,
1561 EVENT_SIZE /* event */ +
1562 LEB128_SIZE /* new size */
1565 emit_event (logbuffer, TYPE_GC_RESIZE | TYPE_GC);
1566 emit_value (logbuffer, new_size);
1568 EXIT_LOG_EXPLICIT (DO_SEND);
1573 MonoMethod* methods [MAX_FRAMES];
1574 int32_t il_offsets [MAX_FRAMES];
1575 int32_t native_offsets [MAX_FRAMES];
1578 static int num_frames = MAX_FRAMES;
1581 walk_stack (MonoMethod *method, int32_t native_offset, int32_t il_offset, mono_bool managed, void* data)
1583 FrameData *frame = (FrameData *)data;
1584 if (method && frame->count < num_frames) {
1585 frame->il_offsets [frame->count] = il_offset;
1586 frame->native_offsets [frame->count] = native_offset;
1587 frame->methods [frame->count++] = method;
1588 //printf ("In %d %s at %d (native: %d)\n", frame->count, mono_method_get_name (method), il_offset, native_offset);
1590 return frame->count == num_frames;
1594 * a note about stack walks: they can cause more profiler events to fire,
1595 * so we need to make sure they don't happen after we started emitting an
1596 * event, hence the collect_bt/emit_bt split.
1599 collect_bt (FrameData *data)
1602 mono_stack_walk_no_il (walk_stack, data);
1606 emit_bt (MonoProfiler *prof, LogBuffer *logbuffer, FrameData *data)
1608 /* FIXME: this is actually tons of data and we should
1609 * just output it the first time and use an id the next
1611 if (data->count > num_frames)
1612 printf ("bad num frames: %d\n", data->count);
1613 emit_value (logbuffer, data->count);
1614 //if (*p != data.count) {
1615 // printf ("bad num frames enc at %d: %d -> %d\n", count, data.count, *p); printf ("frames end: %p->%p\n", p, logbuffer->cursor); exit(0);}
1616 while (data->count) {
1617 emit_method (logbuffer, data->methods [--data->count]);
1622 gc_alloc (MonoProfiler *prof, MonoObject *obj, MonoClass *klass)
1624 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_ALLOC_BT : 0;
1626 uintptr_t len = mono_object_get_size (obj);
1627 /* account for object alignment in the heap */
1634 ENTER_LOG (&gc_allocs_ctr, logbuffer,
1635 EVENT_SIZE /* event */ +
1636 LEB128_SIZE /* klass */ +
1637 LEB128_SIZE /* obj */ +
1638 LEB128_SIZE /* size */ +
1640 LEB128_SIZE /* count */ +
1642 LEB128_SIZE /* method */
1647 emit_event (logbuffer, do_bt | TYPE_ALLOC);
1648 emit_ptr (logbuffer, klass);
1649 emit_obj (logbuffer, obj);
1650 emit_value (logbuffer, len);
1653 emit_bt (prof, logbuffer, &data);
1659 gc_moves (MonoProfiler *prof, void **objects, int num)
1661 ENTER_LOG (&gc_moves_ctr, logbuffer,
1662 EVENT_SIZE /* event */ +
1663 LEB128_SIZE /* num */ +
1665 LEB128_SIZE /* object */
1669 emit_event (logbuffer, TYPE_GC_MOVE | TYPE_GC);
1670 emit_value (logbuffer, num);
1672 for (int i = 0; i < num; ++i)
1673 emit_obj (logbuffer, objects [i]);
1675 EXIT_LOG_EXPLICIT (DO_SEND);
1679 gc_handle (MonoProfiler *prof, int op, int type, uintptr_t handle, MonoObject *obj)
1681 int do_bt = nocalls && InterlockedRead (&runtime_inited) && !notraces;
1687 gint32 *ctr = op == MONO_PROFILER_GC_HANDLE_CREATED ? &gc_handle_creations_ctr : &gc_handle_deletions_ctr;
1689 ENTER_LOG (ctr, logbuffer,
1690 EVENT_SIZE /* event */ +
1691 LEB128_SIZE /* type */ +
1692 LEB128_SIZE /* handle */ +
1693 (op == MONO_PROFILER_GC_HANDLE_CREATED ? (
1694 LEB128_SIZE /* obj */
1697 LEB128_SIZE /* count */ +
1699 LEB128_SIZE /* method */
1704 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1705 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_CREATED_BT : TYPE_GC_HANDLE_CREATED) | TYPE_GC);
1706 else if (op == MONO_PROFILER_GC_HANDLE_DESTROYED)
1707 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_DESTROYED_BT : TYPE_GC_HANDLE_DESTROYED) | TYPE_GC);
1709 g_assert_not_reached ();
1711 emit_value (logbuffer, type);
1712 emit_value (logbuffer, handle);
1714 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1715 emit_obj (logbuffer, obj);
1718 emit_bt (prof, logbuffer, &data);
1724 finalize_begin (MonoProfiler *prof)
1726 ENTER_LOG (&finalize_begins_ctr, buf,
1727 EVENT_SIZE /* event */
1730 emit_event (buf, TYPE_GC_FINALIZE_START | TYPE_GC);
1736 finalize_end (MonoProfiler *prof)
1738 trigger_on_demand_heapshot ();
1739 if (ENABLED (PROFLOG_FINALIZATION_EVENTS)) {
1740 ENTER_LOG (&finalize_ends_ctr, buf,
1741 EVENT_SIZE /* event */
1744 emit_event (buf, TYPE_GC_FINALIZE_END | TYPE_GC);
1751 finalize_object_begin (MonoProfiler *prof, MonoObject *obj)
1753 ENTER_LOG (&finalize_object_begins_ctr, buf,
1754 EVENT_SIZE /* event */ +
1755 LEB128_SIZE /* obj */
1758 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_START | TYPE_GC);
1759 emit_obj (buf, obj);
1765 finalize_object_end (MonoProfiler *prof, MonoObject *obj)
1767 ENTER_LOG (&finalize_object_ends_ctr, buf,
1768 EVENT_SIZE /* event */ +
1769 LEB128_SIZE /* obj */
1772 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_END | TYPE_GC);
1773 emit_obj (buf, obj);
1779 push_nesting (char *p, MonoClass *klass)
1784 nesting = mono_class_get_nesting_type (klass);
1786 p = push_nesting (p, nesting);
1790 name = mono_class_get_name (klass);
1791 nspace = mono_class_get_namespace (klass);
1794 p += strlen (nspace);
1804 type_name (MonoClass *klass)
1808 push_nesting (buf, klass);
1809 p = (char *) g_malloc (strlen (buf) + 1);
1815 image_loaded (MonoProfiler *prof, MonoImage *image, int result)
1817 if (result != MONO_PROFILE_OK)
1820 const char *name = mono_image_get_filename (image);
1821 int nlen = strlen (name) + 1;
1823 ENTER_LOG (&image_loads_ctr, logbuffer,
1824 EVENT_SIZE /* event */ +
1825 BYTE_SIZE /* type */ +
1826 LEB128_SIZE /* image */ +
1830 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1831 emit_byte (logbuffer, TYPE_IMAGE);
1832 emit_ptr (logbuffer, image);
1833 memcpy (logbuffer->cursor, name, nlen);
1834 logbuffer->cursor += nlen;
1840 image_unloaded (MonoProfiler *prof, MonoImage *image)
1842 const char *name = mono_image_get_filename (image);
1843 int nlen = strlen (name) + 1;
1845 ENTER_LOG (&image_unloads_ctr, logbuffer,
1846 EVENT_SIZE /* event */ +
1847 BYTE_SIZE /* type */ +
1848 LEB128_SIZE /* image */ +
1852 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1853 emit_byte (logbuffer, TYPE_IMAGE);
1854 emit_ptr (logbuffer, image);
1855 memcpy (logbuffer->cursor, name, nlen);
1856 logbuffer->cursor += nlen;
1862 assembly_loaded (MonoProfiler *prof, MonoAssembly *assembly, int result)
1864 if (result != MONO_PROFILE_OK)
1867 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1868 int nlen = strlen (name) + 1;
1869 MonoImage *image = mono_assembly_get_image (assembly);
1871 ENTER_LOG (&assembly_loads_ctr, logbuffer,
1872 EVENT_SIZE /* event */ +
1873 BYTE_SIZE /* type */ +
1874 LEB128_SIZE /* assembly */ +
1875 LEB128_SIZE /* image */ +
1879 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1880 emit_byte (logbuffer, TYPE_ASSEMBLY);
1881 emit_ptr (logbuffer, assembly);
1882 emit_ptr (logbuffer, image);
1883 memcpy (logbuffer->cursor, name, nlen);
1884 logbuffer->cursor += nlen;
1892 assembly_unloaded (MonoProfiler *prof, MonoAssembly *assembly)
1894 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1895 int nlen = strlen (name) + 1;
1896 MonoImage *image = mono_assembly_get_image (assembly);
1898 ENTER_LOG (&assembly_unloads_ctr, logbuffer,
1899 EVENT_SIZE /* event */ +
1900 BYTE_SIZE /* type */ +
1901 LEB128_SIZE /* assembly */ +
1902 LEB128_SIZE /* image */ +
1906 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1907 emit_byte (logbuffer, TYPE_ASSEMBLY);
1908 emit_ptr (logbuffer, assembly);
1909 emit_ptr (logbuffer, image);
1910 memcpy (logbuffer->cursor, name, nlen);
1911 logbuffer->cursor += nlen;
1919 class_loaded (MonoProfiler *prof, MonoClass *klass, int result)
1921 if (result != MONO_PROFILE_OK)
1926 if (InterlockedRead (&runtime_inited))
1927 name = mono_type_get_name (mono_class_get_type (klass));
1929 name = type_name (klass);
1931 int nlen = strlen (name) + 1;
1932 MonoImage *image = mono_class_get_image (klass);
1934 ENTER_LOG (&class_loads_ctr, logbuffer,
1935 EVENT_SIZE /* event */ +
1936 BYTE_SIZE /* type */ +
1937 LEB128_SIZE /* klass */ +
1938 LEB128_SIZE /* image */ +
1942 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1943 emit_byte (logbuffer, TYPE_CLASS);
1944 emit_ptr (logbuffer, klass);
1945 emit_ptr (logbuffer, image);
1946 memcpy (logbuffer->cursor, name, nlen);
1947 logbuffer->cursor += nlen;
1958 class_unloaded (MonoProfiler *prof, MonoClass *klass)
1962 if (InterlockedRead (&runtime_inited))
1963 name = mono_type_get_name (mono_class_get_type (klass));
1965 name = type_name (klass);
1967 int nlen = strlen (name) + 1;
1968 MonoImage *image = mono_class_get_image (klass);
1970 ENTER_LOG (&class_unloads_ctr, logbuffer,
1971 EVENT_SIZE /* event */ +
1972 BYTE_SIZE /* type */ +
1973 LEB128_SIZE /* klass */ +
1974 LEB128_SIZE /* image */ +
1978 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1979 emit_byte (logbuffer, TYPE_CLASS);
1980 emit_ptr (logbuffer, klass);
1981 emit_ptr (logbuffer, image);
1982 memcpy (logbuffer->cursor, name, nlen);
1983 logbuffer->cursor += nlen;
1993 static void process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method);
1996 method_enter (MonoProfiler *prof, MonoMethod *method)
1998 process_method_enter_coverage (prof, method);
2000 if (!only_coverage && get_thread ()->call_depth++ <= max_call_depth) {
2001 ENTER_LOG (&method_entries_ctr, logbuffer,
2002 EVENT_SIZE /* event */ +
2003 LEB128_SIZE /* method */
2006 emit_event (logbuffer, TYPE_ENTER | TYPE_METHOD);
2007 emit_method (logbuffer, method);
2014 method_leave (MonoProfiler *prof, MonoMethod *method)
2016 if (!only_coverage && --get_thread ()->call_depth <= max_call_depth) {
2017 ENTER_LOG (&method_exits_ctr, logbuffer,
2018 EVENT_SIZE /* event */ +
2019 LEB128_SIZE /* method */
2022 emit_event (logbuffer, TYPE_LEAVE | TYPE_METHOD);
2023 emit_method (logbuffer, method);
2030 method_exc_leave (MonoProfiler *prof, MonoMethod *method)
2032 if (!only_coverage && !nocalls && --get_thread ()->call_depth <= max_call_depth) {
2033 ENTER_LOG (&method_exception_exits_ctr, logbuffer,
2034 EVENT_SIZE /* event */ +
2035 LEB128_SIZE /* method */
2038 emit_event (logbuffer, TYPE_EXC_LEAVE | TYPE_METHOD);
2039 emit_method (logbuffer, method);
2046 method_jitted (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *ji, int result)
2048 if (result != MONO_PROFILE_OK)
2051 register_method_local (method, ji);
2055 code_buffer_new (MonoProfiler *prof, void *buffer, int size, MonoProfilerCodeBufferType type, void *data)
2060 if (type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE) {
2061 name = (char *) data;
2062 nlen = strlen (name) + 1;
2068 ENTER_LOG (&code_buffers_ctr, logbuffer,
2069 EVENT_SIZE /* event */ +
2070 BYTE_SIZE /* type */ +
2071 LEB128_SIZE /* buffer */ +
2072 LEB128_SIZE /* size */ +
2078 emit_event (logbuffer, TYPE_JITHELPER | TYPE_RUNTIME);
2079 emit_byte (logbuffer, type);
2080 emit_ptr (logbuffer, buffer);
2081 emit_value (logbuffer, size);
2084 memcpy (logbuffer->cursor, name, nlen);
2085 logbuffer->cursor += nlen;
2092 throw_exc (MonoProfiler *prof, MonoObject *object)
2094 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_THROW_BT : 0;
2100 ENTER_LOG (&exception_throws_ctr, logbuffer,
2101 EVENT_SIZE /* event */ +
2102 LEB128_SIZE /* object */ +
2104 LEB128_SIZE /* count */ +
2106 LEB128_SIZE /* method */
2111 emit_event (logbuffer, do_bt | TYPE_EXCEPTION);
2112 emit_obj (logbuffer, object);
2115 emit_bt (prof, logbuffer, &data);
2121 clause_exc (MonoProfiler *prof, MonoMethod *method, int clause_type, int clause_num, MonoObject *exc)
2123 ENTER_LOG (&exception_clauses_ctr, logbuffer,
2124 EVENT_SIZE /* event */ +
2125 BYTE_SIZE /* clause type */ +
2126 LEB128_SIZE /* clause num */ +
2127 LEB128_SIZE /* method */
2130 emit_event (logbuffer, TYPE_EXCEPTION | TYPE_CLAUSE);
2131 emit_byte (logbuffer, clause_type);
2132 emit_value (logbuffer, clause_num);
2133 emit_method (logbuffer, method);
2134 emit_obj (logbuffer, exc);
2140 monitor_event (MonoProfiler *profiler, MonoObject *object, MonoProfilerMonitorEvent ev)
2142 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_MONITOR_BT : 0;
2148 ENTER_LOG (&monitor_events_ctr, logbuffer,
2149 EVENT_SIZE /* event */ +
2150 BYTE_SIZE /* ev */ +
2151 LEB128_SIZE /* object */ +
2153 LEB128_SIZE /* count */ +
2155 LEB128_SIZE /* method */
2160 emit_event (logbuffer, do_bt | TYPE_MONITOR);
2161 emit_byte (logbuffer, ev);
2162 emit_obj (logbuffer, object);
2165 emit_bt (profiler, logbuffer, &data);
2171 thread_start (MonoProfiler *prof, uintptr_t tid)
2173 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2174 ENTER_LOG (&thread_starts_ctr, logbuffer,
2175 EVENT_SIZE /* event */ +
2176 BYTE_SIZE /* type */ +
2177 LEB128_SIZE /* tid */
2180 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2181 emit_byte (logbuffer, TYPE_THREAD);
2182 emit_ptr (logbuffer, (void*) tid);
2189 thread_end (MonoProfiler *prof, uintptr_t tid)
2191 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2192 ENTER_LOG (&thread_ends_ctr, logbuffer,
2193 EVENT_SIZE /* event */ +
2194 BYTE_SIZE /* type */ +
2195 LEB128_SIZE /* tid */
2198 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2199 emit_byte (logbuffer, TYPE_THREAD);
2200 emit_ptr (logbuffer, (void*) tid);
2202 EXIT_LOG_EXPLICIT (NO_SEND);
2205 MonoProfilerThread *thread = get_thread ();
2207 thread->ended = TRUE;
2208 remove_thread (thread);
2210 PROF_TLS_SET (NULL);
2214 thread_name (MonoProfiler *prof, uintptr_t tid, const char *name)
2216 int len = strlen (name) + 1;
2218 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2219 ENTER_LOG (&thread_names_ctr, logbuffer,
2220 EVENT_SIZE /* event */ +
2221 BYTE_SIZE /* type */ +
2222 LEB128_SIZE /* tid */ +
2226 emit_event (logbuffer, TYPE_METADATA);
2227 emit_byte (logbuffer, TYPE_THREAD);
2228 emit_ptr (logbuffer, (void*)tid);
2229 memcpy (logbuffer->cursor, name, len);
2230 logbuffer->cursor += len;
2237 domain_loaded (MonoProfiler *prof, MonoDomain *domain, int result)
2239 if (result != MONO_PROFILE_OK)
2242 ENTER_LOG (&domain_loads_ctr, logbuffer,
2243 EVENT_SIZE /* event */ +
2244 BYTE_SIZE /* type */ +
2245 LEB128_SIZE /* domain id */
2248 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2249 emit_byte (logbuffer, TYPE_DOMAIN);
2250 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2256 domain_unloaded (MonoProfiler *prof, MonoDomain *domain)
2258 ENTER_LOG (&domain_unloads_ctr, logbuffer,
2259 EVENT_SIZE /* event */ +
2260 BYTE_SIZE /* type */ +
2261 LEB128_SIZE /* domain id */
2264 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2265 emit_byte (logbuffer, TYPE_DOMAIN);
2266 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2272 domain_name (MonoProfiler *prof, MonoDomain *domain, const char *name)
2274 int nlen = strlen (name) + 1;
2276 ENTER_LOG (&domain_names_ctr, logbuffer,
2277 EVENT_SIZE /* event */ +
2278 BYTE_SIZE /* type */ +
2279 LEB128_SIZE /* domain id */ +
2283 emit_event (logbuffer, TYPE_METADATA);
2284 emit_byte (logbuffer, TYPE_DOMAIN);
2285 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2286 memcpy (logbuffer->cursor, name, nlen);
2287 logbuffer->cursor += nlen;
2293 context_loaded (MonoProfiler *prof, MonoAppContext *context)
2295 ENTER_LOG (&context_loads_ctr, logbuffer,
2296 EVENT_SIZE /* event */ +
2297 BYTE_SIZE /* type */ +
2298 LEB128_SIZE /* context id */ +
2299 LEB128_SIZE /* domain id */
2302 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2303 emit_byte (logbuffer, TYPE_CONTEXT);
2304 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2305 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2311 context_unloaded (MonoProfiler *prof, MonoAppContext *context)
2313 ENTER_LOG (&context_unloads_ctr, logbuffer,
2314 EVENT_SIZE /* event */ +
2315 BYTE_SIZE /* type */ +
2316 LEB128_SIZE /* context id */ +
2317 LEB128_SIZE /* domain id */
2320 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2321 emit_byte (logbuffer, TYPE_CONTEXT);
2322 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2323 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2336 MonoLockFreeQueueNode node;
2342 AsyncFrameInfo frames [MONO_ZERO_LEN_ARRAY];
2346 async_walk_stack (MonoMethod *method, MonoDomain *domain, void *base_address, int offset, void *data)
2348 SampleHit *sample = (SampleHit *) data;
2350 if (sample->count < num_frames) {
2351 int i = sample->count;
2353 sample->frames [i].method = method;
2354 sample->frames [i].domain = domain;
2355 sample->frames [i].base_address = base_address;
2356 sample->frames [i].offset = offset;
2361 return sample->count == num_frames;
2364 #define SAMPLE_SLOT_SIZE(FRAMES) (sizeof (SampleHit) + sizeof (AsyncFrameInfo) * (FRAMES - MONO_ZERO_LEN_ARRAY))
2365 #define SAMPLE_BLOCK_SIZE (mono_pagesize ())
2368 enqueue_sample_hit (gpointer p)
2370 SampleHit *sample = p;
2372 mono_lock_free_queue_node_unpoison (&sample->node);
2373 mono_lock_free_queue_enqueue (&sample->prof->dumper_queue, &sample->node);
2374 mono_os_sem_post (&sample->prof->dumper_queue_sem);
2378 mono_sample_hit (MonoProfiler *profiler, unsigned char *ip, void *context)
2381 * Please note: We rely on the runtime loading the profiler with
2382 * MONO_DL_EAGER (RTLD_NOW) so that references to runtime functions within
2383 * this function (and its siblings) are resolved when the profiler is
2384 * loaded. Otherwise, we would potentially invoke the dynamic linker when
2385 * invoking runtime functions, which is not async-signal-safe.
2388 if (InterlockedRead (&in_shutdown))
2391 SampleHit *sample = (SampleHit *) mono_lock_free_queue_dequeue (&profiler->sample_reuse_queue);
2395 * If we're out of reusable sample events and we're not allowed to
2396 * allocate more, we have no choice but to drop the event.
2398 if (InterlockedRead (&sample_allocations_ctr) >= max_allocated_sample_hits)
2401 sample = mono_lock_free_alloc (&profiler->sample_allocator);
2402 sample->prof = profiler;
2403 mono_lock_free_queue_node_init (&sample->node, TRUE);
2405 InterlockedIncrement (&sample_allocations_ctr);
2409 mono_stack_walk_async_safe (&async_walk_stack, context, sample);
2411 sample->time = current_time ();
2412 sample->tid = thread_id ();
2415 mono_thread_hazardous_try_free (sample, enqueue_sample_hit);
2418 static uintptr_t *code_pages = 0;
2419 static int num_code_pages = 0;
2420 static int size_code_pages = 0;
2421 #define CPAGE_SHIFT (9)
2422 #define CPAGE_SIZE (1 << CPAGE_SHIFT)
2423 #define CPAGE_MASK (~(CPAGE_SIZE - 1))
2424 #define CPAGE_ADDR(p) ((p) & CPAGE_MASK)
2427 add_code_page (uintptr_t *hash, uintptr_t hsize, uintptr_t page)
2430 uintptr_t start_pos;
2431 start_pos = (page >> CPAGE_SHIFT) % hsize;
2434 if (hash [i] && CPAGE_ADDR (hash [i]) == CPAGE_ADDR (page)) {
2436 } else if (!hash [i]) {
2443 } while (i != start_pos);
2444 /* should not happen */
2445 printf ("failed code page store\n");
2450 add_code_pointer (uintptr_t ip)
2453 if (num_code_pages * 2 >= size_code_pages) {
2455 uintptr_t old_size = size_code_pages;
2456 size_code_pages *= 2;
2457 if (size_code_pages == 0)
2458 size_code_pages = 16;
2459 n = (uintptr_t *) g_calloc (sizeof (uintptr_t) * size_code_pages, 1);
2460 for (i = 0; i < old_size; ++i) {
2462 add_code_page (n, size_code_pages, code_pages [i]);
2465 g_free (code_pages);
2468 num_code_pages += add_code_page (code_pages, size_code_pages, ip & CPAGE_MASK);
2471 /* ELF code crashes on some systems. */
2472 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2475 dump_ubin (MonoProfiler *prof, const char *filename, uintptr_t load_addr, uint64_t offset, uintptr_t size)
2477 int len = strlen (filename) + 1;
2479 ENTER_LOG (&sample_ubins_ctr, logbuffer,
2480 EVENT_SIZE /* event */ +
2481 LEB128_SIZE /* load address */ +
2482 LEB128_SIZE /* offset */ +
2483 LEB128_SIZE /* size */ +
2484 nlen /* file name */
2487 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_UBIN);
2488 emit_ptr (logbuffer, load_addr);
2489 emit_uvalue (logbuffer, offset);
2490 emit_uvalue (logbuffer, size);
2491 memcpy (logbuffer->cursor, filename, len);
2492 logbuffer->cursor += len;
2494 EXIT_LOG_EXPLICIT (DO_SEND);
2499 dump_usym (MonoProfiler *prof, const char *name, uintptr_t value, uintptr_t size)
2501 int len = strlen (name) + 1;
2503 ENTER_LOG (&sample_usyms_ctr, logbuffer,
2504 EVENT_SIZE /* event */ +
2505 LEB128_SIZE /* value */ +
2506 LEB128_SIZE /* size */ +
2510 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_USYM);
2511 emit_ptr (logbuffer, (void*)value);
2512 emit_value (logbuffer, size);
2513 memcpy (logbuffer->cursor, name, len);
2514 logbuffer->cursor += len;
2516 EXIT_LOG_EXPLICIT (DO_SEND);
2519 /* ELF code crashes on some systems. */
2520 //#if defined(ELFMAG0)
2523 #if SIZEOF_VOID_P == 4
2524 #define ELF_WSIZE 32
2526 #define ELF_WSIZE 64
2529 #define ElfW(type) _ElfW (Elf, ELF_WSIZE, type)
2530 #define _ElfW(e,w,t) _ElfW_1 (e, w, _##t)
2531 #define _ElfW_1(e,w,t) e##w##t
2535 dump_elf_symbols (MonoProfiler *prof, ElfW(Sym) *symbols, int num_symbols, const char *strtab, void *load_addr)
2538 for (i = 0; i < num_symbols; ++i) {
2540 sym = strtab + symbols [i].st_name;
2541 if (!symbols [i].st_name || !symbols [i].st_size || (symbols [i].st_info & 0xf) != STT_FUNC)
2543 //printf ("symbol %s at %d\n", sym, symbols [i].st_value);
2544 dump_usym (sym, (uintptr_t)load_addr + symbols [i].st_value, symbols [i].st_size);
2549 read_elf_symbols (MonoProfiler *prof, const char *filename, void *load_addr)
2556 ElfW(Shdr) *sheader;
2557 ElfW(Shdr) *shstrtabh;
2558 ElfW(Shdr) *symtabh = NULL;
2559 ElfW(Shdr) *strtabh = NULL;
2560 ElfW(Sym) *symbols = NULL;
2564 fd = open (filename, O_RDONLY);
2567 if (fstat (fd, &statb) != 0) {
2571 file_size = statb.st_size;
2572 data = mmap (NULL, file_size, PROT_READ, MAP_PRIVATE, fd, 0);
2574 if (data == MAP_FAILED)
2577 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2578 header->e_ident [EI_MAG1] != ELFMAG1 ||
2579 header->e_ident [EI_MAG2] != ELFMAG2 ||
2580 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2581 munmap (data, file_size);
2584 sheader = (void*)((char*)data + header->e_shoff);
2585 shstrtabh = (void*)((char*)sheader + (header->e_shentsize * header->e_shstrndx));
2586 strtab = (const char*)data + shstrtabh->sh_offset;
2587 for (i = 0; i < header->e_shnum; ++i) {
2588 //printf ("section header: %d\n", sheader->sh_type);
2589 if (sheader->sh_type == SHT_SYMTAB) {
2591 strtabh = (void*)((char*)data + header->e_shoff + sheader->sh_link * header->e_shentsize);
2592 /*printf ("symtab section header: %d, .strstr: %d\n", i, sheader->sh_link);*/
2595 sheader = (void*)((char*)sheader + header->e_shentsize);
2597 if (!symtabh || !strtabh) {
2598 munmap (data, file_size);
2601 strtab = (const char*)data + strtabh->sh_offset;
2602 num_symbols = symtabh->sh_size / symtabh->sh_entsize;
2603 symbols = (void*)((char*)data + symtabh->sh_offset);
2604 dump_elf_symbols (symbols, num_symbols, strtab, load_addr);
2605 munmap (data, file_size);
2610 /* ELF code crashes on some systems. */
2611 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2614 elf_dl_callback (struct dl_phdr_info *info, size_t size, void *data)
2616 MonoProfiler *prof = data;
2618 const char *filename;
2620 char *a = (void*)info->dlpi_addr;
2622 ElfW(Dyn) *dyn = NULL;
2623 ElfW(Sym) *symtab = NULL;
2624 ElfW(Word) *hash_table = NULL;
2625 ElfW(Ehdr) *header = NULL;
2626 const char* strtab = NULL;
2627 for (obj = prof->binary_objects; obj; obj = obj->next) {
2631 filename = info->dlpi_name;
2634 if (!info->dlpi_addr && !filename [0]) {
2635 int l = readlink ("/proc/self/exe", buf, sizeof (buf) - 1);
2641 obj = g_calloc (sizeof (BinaryObject), 1);
2642 obj->addr = (void*)info->dlpi_addr;
2643 obj->name = pstrdup (filename);
2644 obj->next = prof->binary_objects;
2645 prof->binary_objects = obj;
2646 //printf ("loaded file: %s at %p, segments: %d\n", filename, (void*)info->dlpi_addr, info->dlpi_phnum);
2648 for (i = 0; i < info->dlpi_phnum; ++i) {
2649 //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);
2650 if (info->dlpi_phdr[i].p_type == PT_LOAD && !header) {
2651 header = (ElfW(Ehdr)*)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2652 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2653 header->e_ident [EI_MAG1] != ELFMAG1 ||
2654 header->e_ident [EI_MAG2] != ELFMAG2 ||
2655 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2658 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);
2659 } else if (info->dlpi_phdr[i].p_type == PT_DYNAMIC) {
2660 dyn = (ElfW(Dyn) *)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2663 if (read_elf_symbols (prof, filename, (void*)info->dlpi_addr))
2665 if (!info->dlpi_name || !info->dlpi_name[0])
2669 for (i = 0; dyn [i].d_tag != DT_NULL; ++i) {
2670 if (dyn [i].d_tag == DT_SYMTAB) {
2671 if (symtab && do_debug)
2672 printf ("multiple symtabs: %d\n", i);
2673 symtab = (ElfW(Sym) *)(a + dyn [i].d_un.d_ptr);
2674 } else if (dyn [i].d_tag == DT_HASH) {
2675 hash_table = (ElfW(Word) *)(a + dyn [i].d_un.d_ptr);
2676 } else if (dyn [i].d_tag == DT_STRTAB) {
2677 strtab = (const char*)(a + dyn [i].d_un.d_ptr);
2682 num_sym = hash_table [1];
2683 dump_elf_symbols (prof, symtab, num_sym, strtab, (void*)info->dlpi_addr);
2688 load_binaries (MonoProfiler *prof)
2690 dl_iterate_phdr (elf_dl_callback, prof);
2695 load_binaries (MonoProfiler *prof)
2702 symbol_for (uintptr_t code)
2705 void *ip = (void*)code;
2707 if (dladdr (ip, &di)) {
2709 return di.dli_sname;
2712 names = backtrace_symbols (&ip, 1);
2714 const char* p = names [0];
2725 dump_unmanaged_coderefs (MonoProfiler *prof)
2728 const char* last_symbol;
2729 uintptr_t addr, page_end;
2731 if (load_binaries (prof))
2733 for (i = 0; i < size_code_pages; ++i) {
2735 if (!code_pages [i] || code_pages [i] & 1)
2738 addr = CPAGE_ADDR (code_pages [i]);
2739 page_end = addr + CPAGE_SIZE;
2740 code_pages [i] |= 1;
2741 /* we dump the symbols for the whole page */
2742 for (; addr < page_end; addr += 16) {
2743 sym = symbol_for (addr);
2744 if (sym && sym == last_symbol)
2749 dump_usym (prof, sym, addr, 0); /* let's not guess the size */
2750 //printf ("found symbol at %p: %s\n", (void*)addr, sym);
2755 typedef struct MonoCounterAgent {
2756 MonoCounter *counter;
2757 // MonoCounterAgent specific data :
2762 struct MonoCounterAgent *next;
2765 static MonoCounterAgent* counters;
2766 static int counters_index = 1;
2767 static mono_mutex_t counters_mutex;
2770 counters_add_agent (MonoCounter *counter)
2772 if (InterlockedRead (&in_shutdown))
2775 MonoCounterAgent *agent, *item;
2777 mono_os_mutex_lock (&counters_mutex);
2779 for (agent = counters; agent; agent = agent->next) {
2780 if (agent->counter == counter) {
2781 agent->value_size = 0;
2783 g_free (agent->value);
2784 agent->value = NULL;
2790 agent = (MonoCounterAgent *) g_malloc (sizeof (MonoCounterAgent));
2791 agent->counter = counter;
2792 agent->value = NULL;
2793 agent->value_size = 0;
2794 agent->index = counters_index++;
2808 mono_os_mutex_unlock (&counters_mutex);
2812 counters_init_foreach_callback (MonoCounter *counter, gpointer data)
2814 counters_add_agent (counter);
2819 counters_init (MonoProfiler *profiler)
2821 mono_os_mutex_init (&counters_mutex);
2823 mono_counters_on_register (&counters_add_agent);
2824 mono_counters_foreach (counters_init_foreach_callback, NULL);
2828 counters_emit (MonoProfiler *profiler)
2830 MonoCounterAgent *agent;
2833 EVENT_SIZE /* event */ +
2834 LEB128_SIZE /* len */
2837 mono_os_mutex_lock (&counters_mutex);
2839 for (agent = counters; agent; agent = agent->next) {
2844 LEB128_SIZE /* section */ +
2845 strlen (mono_counter_get_name (agent->counter)) + 1 /* name */ +
2846 BYTE_SIZE /* type */ +
2847 BYTE_SIZE /* unit */ +
2848 BYTE_SIZE /* variance */ +
2849 LEB128_SIZE /* index */
2858 ENTER_LOG (&counter_descriptors_ctr, logbuffer, size);
2860 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
2861 emit_value (logbuffer, len);
2863 for (agent = counters; agent; agent = agent->next) {
2869 name = mono_counter_get_name (agent->counter);
2870 emit_value (logbuffer, mono_counter_get_section (agent->counter));
2871 emit_string (logbuffer, name, strlen (name) + 1);
2872 emit_byte (logbuffer, mono_counter_get_type (agent->counter));
2873 emit_byte (logbuffer, mono_counter_get_unit (agent->counter));
2874 emit_byte (logbuffer, mono_counter_get_variance (agent->counter));
2875 emit_value (logbuffer, agent->index);
2880 EXIT_LOG_EXPLICIT (DO_SEND);
2883 mono_os_mutex_unlock (&counters_mutex);
2887 counters_sample (MonoProfiler *profiler, uint64_t timestamp)
2889 MonoCounterAgent *agent;
2890 MonoCounter *counter;
2896 counters_emit (profiler);
2899 buffer = g_calloc (1, buffer_size);
2901 mono_os_mutex_lock (&counters_mutex);
2904 EVENT_SIZE /* event */
2907 for (agent = counters; agent; agent = agent->next) {
2909 LEB128_SIZE /* index */ +
2910 BYTE_SIZE /* type */ +
2911 mono_counter_get_size (agent->counter) /* value */
2916 LEB128_SIZE /* stop marker */
2919 ENTER_LOG (&counter_samples_ctr, logbuffer, size);
2921 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
2923 for (agent = counters; agent; agent = agent->next) {
2926 counter = agent->counter;
2928 size = mono_counter_get_size (counter);
2930 if (size > buffer_size) {
2932 buffer = g_realloc (buffer, buffer_size);
2935 memset (buffer, 0, buffer_size);
2937 g_assert (mono_counters_sample (counter, buffer, size));
2939 type = mono_counter_get_type (counter);
2941 if (!agent->value) {
2942 agent->value = g_calloc (1, size);
2943 agent->value_size = size;
2945 if (type == MONO_COUNTER_STRING) {
2946 if (strcmp (agent->value, buffer) == 0)
2949 if (agent->value_size == size && memcmp (agent->value, buffer, size) == 0)
2954 emit_uvalue (logbuffer, agent->index);
2955 emit_byte (logbuffer, type);
2957 case MONO_COUNTER_INT:
2958 #if SIZEOF_VOID_P == 4
2959 case MONO_COUNTER_WORD:
2961 emit_svalue (logbuffer, *(int*)buffer - *(int*)agent->value);
2963 case MONO_COUNTER_UINT:
2964 emit_uvalue (logbuffer, *(guint*)buffer - *(guint*)agent->value);
2966 case MONO_COUNTER_TIME_INTERVAL:
2967 case MONO_COUNTER_LONG:
2968 #if SIZEOF_VOID_P == 8
2969 case MONO_COUNTER_WORD:
2971 emit_svalue (logbuffer, *(gint64*)buffer - *(gint64*)agent->value);
2973 case MONO_COUNTER_ULONG:
2974 emit_uvalue (logbuffer, *(guint64*)buffer - *(guint64*)agent->value);
2976 case MONO_COUNTER_DOUBLE:
2977 emit_double (logbuffer, *(double*)buffer);
2979 case MONO_COUNTER_STRING:
2981 emit_byte (logbuffer, 0);
2983 emit_byte (logbuffer, 1);
2984 emit_string (logbuffer, (char*)buffer, size);
2988 g_assert_not_reached ();
2991 if (type == MONO_COUNTER_STRING && size > agent->value_size) {
2992 agent->value = g_realloc (agent->value, size);
2993 agent->value_size = size;
2997 memcpy (agent->value, buffer, size);
3001 emit_value (logbuffer, 0);
3003 EXIT_LOG_EXPLICIT (DO_SEND);
3005 mono_os_mutex_unlock (&counters_mutex);
3008 typedef struct _PerfCounterAgent PerfCounterAgent;
3009 struct _PerfCounterAgent {
3010 PerfCounterAgent *next;
3012 char *category_name;
3021 static PerfCounterAgent *perfcounters = NULL;
3024 perfcounters_emit (MonoProfiler *profiler)
3026 PerfCounterAgent *pcagent;
3029 EVENT_SIZE /* event */ +
3030 LEB128_SIZE /* len */
3033 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3034 if (pcagent->emitted)
3038 LEB128_SIZE /* section */ +
3039 strlen (pcagent->category_name) + 1 /* category name */ +
3040 strlen (pcagent->name) + 1 /* name */ +
3041 BYTE_SIZE /* type */ +
3042 BYTE_SIZE /* unit */ +
3043 BYTE_SIZE /* variance */ +
3044 LEB128_SIZE /* index */
3053 ENTER_LOG (&perfcounter_descriptors_ctr, logbuffer, size);
3055 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
3056 emit_value (logbuffer, len);
3058 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3059 if (pcagent->emitted)
3062 emit_value (logbuffer, MONO_COUNTER_PERFCOUNTERS);
3063 emit_string (logbuffer, pcagent->category_name, strlen (pcagent->category_name) + 1);
3064 emit_string (logbuffer, pcagent->name, strlen (pcagent->name) + 1);
3065 emit_byte (logbuffer, MONO_COUNTER_LONG);
3066 emit_byte (logbuffer, MONO_COUNTER_RAW);
3067 emit_byte (logbuffer, MONO_COUNTER_VARIABLE);
3068 emit_value (logbuffer, pcagent->index);
3070 pcagent->emitted = 1;
3073 EXIT_LOG_EXPLICIT (DO_SEND);
3077 perfcounters_foreach (char *category_name, char *name, unsigned char type, gint64 value, gpointer user_data)
3079 PerfCounterAgent *pcagent;
3081 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3082 if (strcmp (pcagent->category_name, category_name) != 0 || strcmp (pcagent->name, name) != 0)
3084 if (pcagent->value == value)
3087 pcagent->value = value;
3088 pcagent->updated = 1;
3089 pcagent->deleted = 0;
3093 pcagent = g_new0 (PerfCounterAgent, 1);
3094 pcagent->next = perfcounters;
3095 pcagent->index = counters_index++;
3096 pcagent->category_name = g_strdup (category_name);
3097 pcagent->name = g_strdup (name);
3098 pcagent->type = (int) type;
3099 pcagent->value = value;
3100 pcagent->emitted = 0;
3101 pcagent->updated = 1;
3102 pcagent->deleted = 0;
3104 perfcounters = pcagent;
3110 perfcounters_sample (MonoProfiler *profiler, uint64_t timestamp)
3112 PerfCounterAgent *pcagent;
3116 mono_os_mutex_lock (&counters_mutex);
3118 /* mark all perfcounters as deleted, foreach will unmark them as necessary */
3119 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next)
3120 pcagent->deleted = 1;
3122 mono_perfcounter_foreach (perfcounters_foreach, perfcounters);
3124 perfcounters_emit (profiler);
3127 EVENT_SIZE /* event */
3130 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3131 if (pcagent->deleted || !pcagent->updated)
3135 LEB128_SIZE /* index */ +
3136 BYTE_SIZE /* type */ +
3137 LEB128_SIZE /* value */
3147 LEB128_SIZE /* stop marker */
3150 ENTER_LOG (&perfcounter_samples_ctr, logbuffer, size);
3152 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
3154 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3155 if (pcagent->deleted || !pcagent->updated)
3157 emit_uvalue (logbuffer, pcagent->index);
3158 emit_byte (logbuffer, MONO_COUNTER_LONG);
3159 emit_svalue (logbuffer, pcagent->value);
3161 pcagent->updated = 0;
3164 emit_value (logbuffer, 0);
3166 EXIT_LOG_EXPLICIT (DO_SEND);
3169 mono_os_mutex_unlock (&counters_mutex);
3173 counters_and_perfcounters_sample (MonoProfiler *prof)
3175 uint64_t now = current_time ();
3177 counters_sample (prof, now);
3178 perfcounters_sample (prof, now);
3181 #define COVERAGE_DEBUG(x) if (debug_coverage) {x}
3182 static mono_mutex_t coverage_mutex;
3183 static MonoConcurrentHashTable *coverage_methods = NULL;
3184 static MonoConcurrentHashTable *coverage_assemblies = NULL;
3185 static MonoConcurrentHashTable *coverage_classes = NULL;
3187 static MonoConcurrentHashTable *filtered_classes = NULL;
3188 static MonoConcurrentHashTable *entered_methods = NULL;
3189 static MonoConcurrentHashTable *image_to_methods = NULL;
3190 static MonoConcurrentHashTable *suppressed_assemblies = NULL;
3191 static gboolean coverage_initialized = FALSE;
3193 static GPtrArray *coverage_data = NULL;
3194 static int previous_offset = 0;
3197 MonoLockFreeQueueNode node;
3210 free_coverage_entry (gpointer data, gpointer userdata)
3212 CoverageEntry *entry = (CoverageEntry *)data;
3213 g_free (entry->filename);
3218 obtain_coverage_for_method (MonoProfiler *prof, const MonoProfileCoverageEntry *entry)
3220 int offset = entry->iloffset - previous_offset;
3221 CoverageEntry *e = g_new (CoverageEntry, 1);
3223 previous_offset = entry->iloffset;
3226 e->counter = entry->counter;
3227 e->filename = g_strdup(entry->filename ? entry->filename : "");
3228 e->line = entry->line;
3229 e->column = entry->col;
3231 g_ptr_array_add (coverage_data, e);
3235 parse_generic_type_names(char *name)
3237 char *new_name, *ret;
3238 int within_generic_declaration = 0, generic_members = 1;
3240 if (name == NULL || *name == '\0')
3241 return g_strdup ("");
3243 if (!(ret = new_name = (char *) g_calloc (strlen (name) * 4 + 1, sizeof (char))))
3249 within_generic_declaration = 1;
3253 within_generic_declaration = 0;
3255 if (*(name - 1) != '<') {
3257 *new_name++ = '0' + generic_members;
3259 memcpy (new_name, "<>", 8);
3263 generic_members = 0;
3271 if (!within_generic_declaration)
3272 *new_name++ = *name;
3281 static int method_id;
3283 build_method_buffer (gpointer key, gpointer value, gpointer userdata)
3285 MonoMethod *method = (MonoMethod *)value;
3286 MonoProfiler *prof = (MonoProfiler *)userdata;
3290 const char *image_name, *method_name, *sig, *first_filename;
3293 previous_offset = 0;
3294 coverage_data = g_ptr_array_new ();
3296 mono_profiler_coverage_get (prof, method, obtain_coverage_for_method);
3298 klass = mono_method_get_class (method);
3299 image = mono_class_get_image (klass);
3300 image_name = mono_image_get_name (image);
3302 sig = mono_signature_get_desc (mono_method_signature (method), TRUE);
3303 class_name = parse_generic_type_names (mono_type_get_name (mono_class_get_type (klass)));
3304 method_name = mono_method_get_name (method);
3306 if (coverage_data->len != 0) {
3307 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[0];
3308 first_filename = entry->filename ? entry->filename : "";
3310 first_filename = "";
3312 image_name = image_name ? image_name : "";
3313 sig = sig ? sig : "";
3314 method_name = method_name ? method_name : "";
3316 ENTER_LOG (&coverage_methods_ctr, logbuffer,
3317 EVENT_SIZE /* event */ +
3318 strlen (image_name) + 1 /* image name */ +
3319 strlen (class_name) + 1 /* class name */ +
3320 strlen (method_name) + 1 /* method name */ +
3321 strlen (sig) + 1 /* signature */ +
3322 strlen (first_filename) + 1 /* first file name */ +
3323 LEB128_SIZE /* token */ +
3324 LEB128_SIZE /* method id */ +
3325 LEB128_SIZE /* entries */
3328 emit_event (logbuffer, TYPE_COVERAGE_METHOD | TYPE_COVERAGE);
3329 emit_string (logbuffer, image_name, strlen (image_name) + 1);
3330 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3331 emit_string (logbuffer, method_name, strlen (method_name) + 1);
3332 emit_string (logbuffer, sig, strlen (sig) + 1);
3333 emit_string (logbuffer, first_filename, strlen (first_filename) + 1);
3335 emit_uvalue (logbuffer, mono_method_get_token (method));
3336 emit_uvalue (logbuffer, method_id);
3337 emit_value (logbuffer, coverage_data->len);
3339 EXIT_LOG_EXPLICIT (DO_SEND);
3341 for (i = 0; i < coverage_data->len; i++) {
3342 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[i];
3344 ENTER_LOG (&coverage_statements_ctr, logbuffer,
3345 EVENT_SIZE /* event */ +
3346 LEB128_SIZE /* method id */ +
3347 LEB128_SIZE /* offset */ +
3348 LEB128_SIZE /* counter */ +
3349 LEB128_SIZE /* line */ +
3350 LEB128_SIZE /* column */
3353 emit_event (logbuffer, TYPE_COVERAGE_STATEMENT | TYPE_COVERAGE);
3354 emit_uvalue (logbuffer, method_id);
3355 emit_uvalue (logbuffer, entry->offset);
3356 emit_uvalue (logbuffer, entry->counter);
3357 emit_uvalue (logbuffer, entry->line);
3358 emit_uvalue (logbuffer, entry->column);
3360 EXIT_LOG_EXPLICIT (DO_SEND);
3365 g_free (class_name);
3367 g_ptr_array_foreach (coverage_data, free_coverage_entry, NULL);
3368 g_ptr_array_free (coverage_data, TRUE);
3369 coverage_data = NULL;
3372 /* This empties the queue */
3374 count_queue (MonoLockFreeQueue *queue)
3376 MonoLockFreeQueueNode *node;
3379 while ((node = mono_lock_free_queue_dequeue (queue))) {
3381 mono_thread_hazardous_try_free (node, g_free);
3388 build_class_buffer (gpointer key, gpointer value, gpointer userdata)
3390 MonoClass *klass = (MonoClass *)key;
3391 MonoLockFreeQueue *class_methods = (MonoLockFreeQueue *)value;
3394 const char *assembly_name;
3395 int number_of_methods, partially_covered;
3396 guint fully_covered;
3398 image = mono_class_get_image (klass);
3399 assembly_name = mono_image_get_name (image);
3400 class_name = mono_type_get_name (mono_class_get_type (klass));
3402 assembly_name = assembly_name ? assembly_name : "";
3403 number_of_methods = mono_class_num_methods (klass);
3404 fully_covered = count_queue (class_methods);
3405 /* We don't handle partial covered yet */
3406 partially_covered = 0;
3408 ENTER_LOG (&coverage_classes_ctr, logbuffer,
3409 EVENT_SIZE /* event */ +
3410 strlen (assembly_name) + 1 /* assembly name */ +
3411 strlen (class_name) + 1 /* class name */ +
3412 LEB128_SIZE /* no. methods */ +
3413 LEB128_SIZE /* fully covered */ +
3414 LEB128_SIZE /* partially covered */
3417 emit_event (logbuffer, TYPE_COVERAGE_CLASS | TYPE_COVERAGE);
3418 emit_string (logbuffer, assembly_name, strlen (assembly_name) + 1);
3419 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3420 emit_uvalue (logbuffer, number_of_methods);
3421 emit_uvalue (logbuffer, fully_covered);
3422 emit_uvalue (logbuffer, partially_covered);
3424 EXIT_LOG_EXPLICIT (DO_SEND);
3426 g_free (class_name);
3430 get_coverage_for_image (MonoImage *image, int *number_of_methods, guint *fully_covered, int *partially_covered)
3432 MonoLockFreeQueue *image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3434 *number_of_methods = mono_image_get_table_rows (image, MONO_TABLE_METHOD);
3436 *fully_covered = count_queue (image_methods);
3440 // FIXME: We don't handle partially covered yet.
3441 *partially_covered = 0;
3445 build_assembly_buffer (gpointer key, gpointer value, gpointer userdata)
3447 MonoAssembly *assembly = (MonoAssembly *)value;
3448 MonoImage *image = mono_assembly_get_image (assembly);
3449 const char *name, *guid, *filename;
3450 int number_of_methods = 0, partially_covered = 0;
3451 guint fully_covered = 0;
3453 name = mono_image_get_name (image);
3454 guid = mono_image_get_guid (image);
3455 filename = mono_image_get_filename (image);
3457 name = name ? name : "";
3458 guid = guid ? guid : "";
3459 filename = filename ? filename : "";
3461 get_coverage_for_image (image, &number_of_methods, &fully_covered, &partially_covered);
3463 ENTER_LOG (&coverage_assemblies_ctr, logbuffer,
3464 EVENT_SIZE /* event */ +
3465 strlen (name) + 1 /* name */ +
3466 strlen (guid) + 1 /* guid */ +
3467 strlen (filename) + 1 /* file name */ +
3468 LEB128_SIZE /* no. methods */ +
3469 LEB128_SIZE /* fully covered */ +
3470 LEB128_SIZE /* partially covered */
3473 emit_event (logbuffer, TYPE_COVERAGE_ASSEMBLY | TYPE_COVERAGE);
3474 emit_string (logbuffer, name, strlen (name) + 1);
3475 emit_string (logbuffer, guid, strlen (guid) + 1);
3476 emit_string (logbuffer, filename, strlen (filename) + 1);
3477 emit_uvalue (logbuffer, number_of_methods);
3478 emit_uvalue (logbuffer, fully_covered);
3479 emit_uvalue (logbuffer, partially_covered);
3481 EXIT_LOG_EXPLICIT (DO_SEND);
3485 dump_coverage (MonoProfiler *prof)
3487 if (!coverage_initialized)
3490 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Started dump\n");)
3493 mono_os_mutex_lock (&coverage_mutex);
3494 mono_conc_hashtable_foreach (coverage_assemblies, build_assembly_buffer, NULL);
3495 mono_conc_hashtable_foreach (coverage_classes, build_class_buffer, NULL);
3496 mono_conc_hashtable_foreach (coverage_methods, build_method_buffer, prof);
3497 mono_os_mutex_unlock (&coverage_mutex);
3499 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Finished dump\n");)
3503 process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method)
3508 if (!coverage_initialized)
3511 klass = mono_method_get_class (method);
3512 image = mono_class_get_image (klass);
3514 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)))
3517 mono_os_mutex_lock (&coverage_mutex);
3518 mono_conc_hashtable_insert (entered_methods, method, method);
3519 mono_os_mutex_unlock (&coverage_mutex);
3522 static MonoLockFreeQueueNode *
3523 create_method_node (MonoMethod *method)
3525 MethodNode *node = (MethodNode *) g_malloc (sizeof (MethodNode));
3526 mono_lock_free_queue_node_init ((MonoLockFreeQueueNode *) node, FALSE);
3527 node->method = method;
3529 return (MonoLockFreeQueueNode *) node;
3533 coverage_filter (MonoProfiler *prof, MonoMethod *method)
3538 MonoAssembly *assembly;
3539 MonoMethodHeader *header;
3540 guint32 iflags, flags, code_size;
3541 char *fqn, *classname;
3542 gboolean has_positive, found;
3543 MonoLockFreeQueue *image_methods, *class_methods;
3544 MonoLockFreeQueueNode *node;
3546 g_assert (coverage_initialized && "Why are we being asked for coverage filter info when we're not doing coverage?");
3548 COVERAGE_DEBUG(fprintf (stderr, "Coverage filter for %s\n", mono_method_get_name (method));)
3550 flags = mono_method_get_flags (method, &iflags);
3551 if ((iflags & 0x1000 /*METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL*/) ||
3552 (flags & 0x2000 /*METHOD_ATTRIBUTE_PINVOKE_IMPL*/)) {
3553 COVERAGE_DEBUG(fprintf (stderr, " Internal call or pinvoke - ignoring\n");)
3557 // Don't need to do anything else if we're already tracking this method
3558 if (mono_conc_hashtable_lookup (coverage_methods, method)) {
3559 COVERAGE_DEBUG(fprintf (stderr, " Already tracking\n");)
3563 klass = mono_method_get_class (method);
3564 image = mono_class_get_image (klass);
3566 // Don't handle coverage for the core assemblies
3567 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)) != NULL)
3570 if (prof->coverage_filters) {
3571 /* Check already filtered classes first */
3572 if (mono_conc_hashtable_lookup (filtered_classes, klass)) {
3573 COVERAGE_DEBUG(fprintf (stderr, " Already filtered\n");)
3577 classname = mono_type_get_name (mono_class_get_type (klass));
3579 fqn = g_strdup_printf ("[%s]%s", mono_image_get_name (image), classname);
3581 COVERAGE_DEBUG(fprintf (stderr, " Looking for %s in filter\n", fqn);)
3582 // Check positive filters first
3583 has_positive = FALSE;
3585 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3586 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3588 if (filter [0] == '+') {
3589 filter = &filter [1];
3591 COVERAGE_DEBUG(fprintf (stderr, " Checking against +%s ...", filter);)
3593 if (strstr (fqn, filter) != NULL) {
3594 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3597 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3599 has_positive = TRUE;
3603 if (has_positive && !found) {
3604 COVERAGE_DEBUG(fprintf (stderr, " Positive match was not found\n");)
3606 mono_os_mutex_lock (&coverage_mutex);
3607 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3608 mono_os_mutex_unlock (&coverage_mutex);
3615 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3616 // FIXME: Is substring search sufficient?
3617 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3618 if (filter [0] == '+')
3622 filter = &filter [1];
3623 COVERAGE_DEBUG(fprintf (stderr, " Checking against -%s ...", filter);)
3625 if (strstr (fqn, filter) != NULL) {
3626 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3628 mono_os_mutex_lock (&coverage_mutex);
3629 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3630 mono_os_mutex_unlock (&coverage_mutex);
3636 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3644 COVERAGE_DEBUG(fprintf (stderr, " Handling coverage for %s\n", mono_method_get_name (method));)
3645 header = mono_method_get_header_checked (method, &error);
3646 mono_error_cleanup (&error);
3648 mono_method_header_get_code (header, &code_size, NULL);
3650 assembly = mono_image_get_assembly (image);
3652 // Need to keep the assemblies around for as long as they are kept in the hashtable
3653 // Nunit, for example, has a habit of unloading them before the coverage statistics are
3654 // generated causing a crash. See https://bugzilla.xamarin.com/show_bug.cgi?id=39325
3655 mono_assembly_addref (assembly);
3657 mono_os_mutex_lock (&coverage_mutex);
3658 mono_conc_hashtable_insert (coverage_methods, method, method);
3659 mono_conc_hashtable_insert (coverage_assemblies, assembly, assembly);
3660 mono_os_mutex_unlock (&coverage_mutex);
3662 image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3664 if (image_methods == NULL) {
3665 image_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3666 mono_lock_free_queue_init (image_methods);
3667 mono_os_mutex_lock (&coverage_mutex);
3668 mono_conc_hashtable_insert (image_to_methods, image, image_methods);
3669 mono_os_mutex_unlock (&coverage_mutex);
3672 node = create_method_node (method);
3673 mono_lock_free_queue_enqueue (image_methods, node);
3675 class_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (coverage_classes, klass);
3677 if (class_methods == NULL) {
3678 class_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3679 mono_lock_free_queue_init (class_methods);
3680 mono_os_mutex_lock (&coverage_mutex);
3681 mono_conc_hashtable_insert (coverage_classes, klass, class_methods);
3682 mono_os_mutex_unlock (&coverage_mutex);
3685 node = create_method_node (method);
3686 mono_lock_free_queue_enqueue (class_methods, node);
3691 #define LINE_BUFFER_SIZE 4096
3692 /* Max file limit of 128KB */
3693 #define MAX_FILE_SIZE 128 * 1024
3695 get_file_content (FILE *stream)
3700 int res, offset = 0;
3702 res = fseek (stream, 0, SEEK_END);
3706 filesize = ftell (stream);
3710 res = fseek (stream, 0, SEEK_SET);
3714 if (filesize > MAX_FILE_SIZE)
3717 buffer = (char *) g_malloc ((filesize + 1) * sizeof (char));
3718 while ((bytes_read = fread (buffer + offset, 1, LINE_BUFFER_SIZE, stream)) > 0)
3719 offset += bytes_read;
3721 /* NULL terminate our buffer */
3722 buffer[filesize] = '\0';
3727 get_next_line (char *contents, char **next_start)
3731 if (p == NULL || *p == '\0') {
3736 while (*p != '\n' && *p != '\0')
3741 *next_start = p + 1;
3749 init_suppressed_assemblies (void)
3755 suppressed_assemblies = mono_conc_hashtable_new (g_str_hash, g_str_equal);
3756 sa_file = fopen (SUPPRESSION_DIR "/mono-profiler-log.suppression", "r");
3757 if (sa_file == NULL)
3760 /* Don't need to free @content as it is referred to by the lines stored in @suppressed_assemblies */
3761 content = get_file_content (sa_file);
3762 if (content == NULL) {
3763 g_error ("mono-profiler-log.suppression is greater than 128kb - aborting\n");
3766 while ((line = get_next_line (content, &content))) {
3767 line = g_strchomp (g_strchug (line));
3768 /* No locking needed as we're doing initialization */
3769 mono_conc_hashtable_insert (suppressed_assemblies, line, line);
3776 parse_cov_filter_file (GPtrArray *filters, const char *file)
3779 char *line, *content;
3781 filter_file = fopen (file, "r");
3782 if (filter_file == NULL) {
3783 fprintf (stderr, "Unable to open %s\n", file);
3787 /* Don't need to free content as it is referred to by the lines stored in @filters */
3788 content = get_file_content (filter_file);
3789 if (content == NULL)
3790 fprintf (stderr, "WARNING: %s is greater than 128kb - ignoring\n", file);
3792 while ((line = get_next_line (content, &content)))
3793 g_ptr_array_add (filters, g_strchug (g_strchomp (line)));
3795 fclose (filter_file);
3799 coverage_init (MonoProfiler *prof)
3801 g_assert (!coverage_initialized && "Why are we initializing coverage twice?");
3803 COVERAGE_DEBUG(fprintf (stderr, "Coverage initialized\n");)
3805 mono_os_mutex_init (&coverage_mutex);
3806 coverage_methods = mono_conc_hashtable_new (NULL, NULL);
3807 coverage_assemblies = mono_conc_hashtable_new (NULL, NULL);
3808 coverage_classes = mono_conc_hashtable_new (NULL, NULL);
3809 filtered_classes = mono_conc_hashtable_new (NULL, NULL);
3810 entered_methods = mono_conc_hashtable_new (NULL, NULL);
3811 image_to_methods = mono_conc_hashtable_new (NULL, NULL);
3812 init_suppressed_assemblies ();
3814 coverage_initialized = TRUE;
3818 unref_coverage_assemblies (gpointer key, gpointer value, gpointer userdata)
3820 MonoAssembly *assembly = (MonoAssembly *)value;
3821 mono_assembly_close (assembly);
3825 free_sample_hit (gpointer p)
3827 mono_lock_free_free (p, SAMPLE_BLOCK_SIZE);
3831 cleanup_reusable_samples (MonoProfiler *prof)
3835 while ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->sample_reuse_queue)))
3836 mono_thread_hazardous_try_free (sample, free_sample_hit);
3840 log_shutdown (MonoProfiler *prof)
3842 InterlockedWrite (&in_shutdown, 1);
3845 counters_and_perfcounters_sample (prof);
3847 dump_coverage (prof);
3851 if (write (prof->pipes [1], &c, 1) != 1) {
3852 fprintf (stderr, "Could not write to pipe: %s\n", strerror (errno));
3856 mono_native_thread_join (prof->helper_thread);
3858 mono_os_mutex_destroy (&counters_mutex);
3860 MonoCounterAgent *mc_next;
3862 for (MonoCounterAgent *cur = counters; cur; cur = mc_next) {
3863 mc_next = cur->next;
3867 PerfCounterAgent *pc_next;
3869 for (PerfCounterAgent *cur = perfcounters; cur; cur = pc_next) {
3870 pc_next = cur->next;
3875 * Ensure that we empty the LLS completely, even if some nodes are
3876 * not immediately removed upon calling mono_lls_remove (), by
3877 * iterating until the head is NULL.
3879 while (profiler_thread_list.head) {
3880 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
3881 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
3883 remove_thread (thread);
3884 } MONO_LLS_FOREACH_SAFE_END
3888 * Ensure that all threads have been freed, so that we don't miss any
3889 * buffers when we shut down the writer thread below.
3891 mono_thread_hazardous_try_free_all ();
3893 InterlockedWrite (&prof->run_dumper_thread, 0);
3894 mono_os_sem_post (&prof->dumper_queue_sem);
3895 mono_native_thread_join (prof->dumper_thread);
3896 mono_os_sem_destroy (&prof->dumper_queue_sem);
3898 InterlockedWrite (&prof->run_writer_thread, 0);
3899 mono_os_sem_post (&prof->writer_queue_sem);
3900 mono_native_thread_join (prof->writer_thread);
3901 mono_os_sem_destroy (&prof->writer_queue_sem);
3904 * Free all writer queue entries, and ensure that all sample hits will be
3905 * added to the sample reuse queue.
3907 mono_thread_hazardous_try_free_all ();
3909 cleanup_reusable_samples (prof);
3912 * Finally, make sure that all sample hits are freed. This should cover all
3913 * hazardous data from the profiler. We can now be sure that the runtime
3914 * won't later invoke free functions in the profiler library after it has
3917 mono_thread_hazardous_try_free_all ();
3919 g_assert (!InterlockedRead (&buffer_rwlock_count) && "Why is the reader count still non-zero?");
3920 g_assert (!InterlockedReadPointer (&buffer_rwlock_exclusive) && "Why does someone still hold the exclusive lock?");
3922 #if defined (HAVE_SYS_ZLIB)
3924 gzclose (prof->gzfile);
3926 if (prof->pipe_output)
3927 pclose (prof->file);
3929 fclose (prof->file);
3931 mono_conc_hashtable_destroy (prof->method_table);
3932 mono_os_mutex_destroy (&prof->method_table_mutex);
3934 if (coverage_initialized) {
3935 mono_os_mutex_lock (&coverage_mutex);
3936 mono_conc_hashtable_foreach (coverage_assemblies, unref_coverage_assemblies, prof);
3937 mono_os_mutex_unlock (&coverage_mutex);
3939 mono_conc_hashtable_destroy (coverage_methods);
3940 mono_conc_hashtable_destroy (coverage_assemblies);
3941 mono_conc_hashtable_destroy (coverage_classes);
3942 mono_conc_hashtable_destroy (filtered_classes);
3944 mono_conc_hashtable_destroy (entered_methods);
3945 mono_conc_hashtable_destroy (image_to_methods);
3946 mono_conc_hashtable_destroy (suppressed_assemblies);
3947 mono_os_mutex_destroy (&coverage_mutex);
3952 g_free (prof->args);
3957 new_filename (const char* filename)
3959 time_t t = time (NULL);
3960 int pid = process_id ();
3965 int count_dates = 0;
3969 for (p = filename; *p; p++) {
3980 if (!count_dates && !count_pids)
3981 return pstrdup (filename);
3982 snprintf (pid_buf, sizeof (pid_buf), "%d", pid);
3984 snprintf (time_buf, sizeof (time_buf), "%d%02d%02d%02d%02d%02d",
3985 1900 + ts->tm_year, 1 + ts->tm_mon, ts->tm_mday, ts->tm_hour, ts->tm_min, ts->tm_sec);
3986 s_date = strlen (time_buf);
3987 s_pid = strlen (pid_buf);
3988 d = res = (char *) g_malloc (strlen (filename) + s_date * count_dates + s_pid * count_pids);
3989 for (p = filename; *p; p++) {
3996 strcpy (d, time_buf);
3999 } else if (*p == 'p') {
4000 strcpy (d, pid_buf);
4003 } else if (*p == '%') {
4016 add_to_fd_set (fd_set *set, int fd, int *max_fd)
4019 * This should only trigger for the basic FDs (server socket, pipes) at
4020 * startup if for some mysterious reason they're too large. In this case,
4021 * the profiler really can't function, and we're better off printing an
4022 * error and exiting.
4024 if (fd >= FD_SETSIZE) {
4025 fprintf (stderr, "File descriptor is out of bounds for fd_set: %d\n", fd);
4036 helper_thread (void *arg)
4038 MonoProfiler *prof = (MonoProfiler *) arg;
4040 mono_threads_attach_tools_thread ();
4041 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler helper");
4043 MonoProfilerThread *thread = init_thread (prof, FALSE);
4045 GArray *command_sockets = g_array_new (FALSE, FALSE, sizeof (int));
4053 add_to_fd_set (&rfds, prof->server_socket, &max_fd);
4054 add_to_fd_set (&rfds, prof->pipes [0], &max_fd);
4056 for (gint i = 0; i < command_sockets->len; i++)
4057 add_to_fd_set (&rfds, g_array_index (command_sockets, int, i), &max_fd);
4059 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
4061 // Sleep for 1sec or until a file descriptor has data.
4062 if (select (max_fd + 1, &rfds, NULL, NULL, &tv) == -1) {
4066 fprintf (stderr, "Error in mono-profiler-log server: %s", strerror (errno));
4071 counters_and_perfcounters_sample (prof);
4073 buffer_lock_excl ();
4075 sync_point (SYNC_POINT_PERIODIC);
4077 buffer_unlock_excl ();
4079 // Are we shutting down?
4080 if (FD_ISSET (prof->pipes [0], &rfds)) {
4082 read (prof->pipes [0], &c, 1);
4086 for (gint i = 0; i < command_sockets->len; i++) {
4087 int fd = g_array_index (command_sockets, int, i);
4089 if (!FD_ISSET (fd, &rfds))
4093 int len = read (fd, buf, sizeof (buf) - 1);
4099 // The other end disconnected.
4100 g_array_remove_index (command_sockets, i);
4108 if (!strcmp (buf, "heapshot\n") && hs_mode_ondemand) {
4109 // Rely on the finalization callback triggering a GC.
4110 heapshot_requested = 1;
4111 mono_gc_finalize_notify ();
4115 if (FD_ISSET (prof->server_socket, &rfds)) {
4116 int fd = accept (prof->server_socket, NULL, NULL);
4119 if (fd >= FD_SETSIZE)
4122 g_array_append_val (command_sockets, fd);
4127 for (gint i = 0; i < command_sockets->len; i++)
4128 close (g_array_index (command_sockets, int, i));
4130 g_array_free (command_sockets, TRUE);
4132 send_log_unsafe (FALSE);
4133 deinit_thread (thread);
4135 mono_thread_info_detach ();
4141 start_helper_thread (MonoProfiler* prof)
4143 if (pipe (prof->pipes) == -1) {
4144 fprintf (stderr, "Cannot create pipe: %s\n", strerror (errno));
4148 prof->server_socket = socket (PF_INET, SOCK_STREAM, 0);
4150 if (prof->server_socket == -1) {
4151 fprintf (stderr, "Cannot create server socket: %s\n", strerror (errno));
4155 struct sockaddr_in server_address;
4157 memset (&server_address, 0, sizeof (server_address));
4158 server_address.sin_family = AF_INET;
4159 server_address.sin_addr.s_addr = INADDR_ANY;
4160 server_address.sin_port = htons (prof->command_port);
4162 if (bind (prof->server_socket, (struct sockaddr *) &server_address, sizeof (server_address)) == -1) {
4163 fprintf (stderr, "Cannot bind server socket on port %d: %s\n", prof->command_port, strerror (errno));
4164 close (prof->server_socket);
4168 if (listen (prof->server_socket, 1) == -1) {
4169 fprintf (stderr, "Cannot listen on server socket: %s\n", strerror (errno));
4170 close (prof->server_socket);
4174 socklen_t slen = sizeof (server_address);
4176 if (getsockname (prof->server_socket, (struct sockaddr *) &server_address, &slen)) {
4177 fprintf (stderr, "Could not get assigned port: %s\n", strerror (errno));
4178 close (prof->server_socket);
4182 prof->command_port = ntohs (server_address.sin_port);
4184 if (!mono_native_thread_create (&prof->helper_thread, helper_thread, prof)) {
4185 fprintf (stderr, "Could not start helper thread\n");
4186 close (prof->server_socket);
4192 free_writer_entry (gpointer p)
4194 mono_lock_free_free (p, WRITER_ENTRY_BLOCK_SIZE);
4198 handle_writer_queue_entry (MonoProfiler *prof)
4200 WriterQueueEntry *entry;
4202 if ((entry = (WriterQueueEntry *) mono_lock_free_queue_dequeue (&prof->writer_queue))) {
4203 if (!entry->methods)
4206 gboolean wrote_methods = FALSE;
4209 * Encode the method events in a temporary log buffer that we
4210 * flush to disk before the main buffer, ensuring that all
4211 * methods have metadata emitted before they're referenced.
4213 * We use a 'proper' thread-local buffer for this as opposed
4214 * to allocating and freeing a buffer by hand because the call
4215 * to mono_method_full_name () below may trigger class load
4216 * events when it retrieves the signature of the method. So a
4217 * thread-local buffer needs to exist when such events occur.
4219 for (guint i = 0; i < entry->methods->len; i++) {
4220 MethodInfo *info = (MethodInfo *) g_ptr_array_index (entry->methods, i);
4222 if (mono_conc_hashtable_lookup (prof->method_table, info->method))
4223 goto free_info; // This method already has metadata emitted.
4226 * Other threads use this hash table to get a general
4227 * idea of whether a method has already been emitted to
4228 * the stream. Due to the way we add to this table, it
4229 * can easily happen that multiple threads queue up the
4230 * same methods, but that's OK since eventually all
4231 * methods will be in this table and the thread-local
4232 * method lists will just be empty for the rest of the
4235 mono_os_mutex_lock (&prof->method_table_mutex);
4236 mono_conc_hashtable_insert (prof->method_table, info->method, info->method);
4237 mono_os_mutex_unlock (&prof->method_table_mutex);
4239 char *name = mono_method_full_name (info->method, 1);
4240 int nlen = strlen (name) + 1;
4241 void *cstart = info->ji ? mono_jit_info_get_code_start (info->ji) : NULL;
4242 int csize = info->ji ? mono_jit_info_get_code_size (info->ji) : 0;
4244 ENTER_LOG (&method_jits_ctr, logbuffer,
4245 EVENT_SIZE /* event */ +
4246 LEB128_SIZE /* method */ +
4247 LEB128_SIZE /* start */ +
4248 LEB128_SIZE /* size */ +
4252 emit_event_time (logbuffer, TYPE_JIT | TYPE_METHOD, info->time);
4253 emit_method_inner (logbuffer, info->method);
4254 emit_ptr (logbuffer, cstart);
4255 emit_value (logbuffer, csize);
4257 memcpy (logbuffer->cursor, name, nlen);
4258 logbuffer->cursor += nlen;
4260 EXIT_LOG_EXPLICIT (NO_SEND);
4264 wrote_methods = TRUE;
4270 g_ptr_array_free (entry->methods, TRUE);
4272 if (wrote_methods) {
4273 MonoProfilerThread *thread = PROF_TLS_GET ();
4275 dump_buffer_threadless (prof, thread->buffer);
4276 init_buffer_state (thread);
4280 dump_buffer (prof, entry->buffer);
4282 mono_thread_hazardous_try_free (entry, free_writer_entry);
4291 writer_thread (void *arg)
4293 MonoProfiler *prof = (MonoProfiler *)arg;
4295 mono_threads_attach_tools_thread ();
4296 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler writer");
4300 MonoProfilerThread *thread = init_thread (prof, FALSE);
4302 while (InterlockedRead (&prof->run_writer_thread)) {
4303 mono_os_sem_wait (&prof->writer_queue_sem, MONO_SEM_FLAGS_NONE);
4304 handle_writer_queue_entry (prof);
4307 /* Drain any remaining entries on shutdown. */
4308 while (handle_writer_queue_entry (prof));
4310 free_buffer (thread->buffer, thread->buffer->size);
4311 deinit_thread (thread);
4313 mono_thread_info_detach ();
4319 start_writer_thread (MonoProfiler* prof)
4321 InterlockedWrite (&prof->run_writer_thread, 1);
4323 if (!mono_native_thread_create (&prof->writer_thread, writer_thread, prof)) {
4324 fprintf (stderr, "Could not start writer thread\n");
4330 reuse_sample_hit (gpointer p)
4332 SampleHit *sample = p;
4334 mono_lock_free_queue_node_unpoison (&sample->node);
4335 mono_lock_free_queue_enqueue (&sample->prof->sample_reuse_queue, &sample->node);
4339 handle_dumper_queue_entry (MonoProfiler *prof)
4343 if ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->dumper_queue))) {
4344 for (int i = 0; i < sample->count; ++i) {
4345 MonoMethod *method = sample->frames [i].method;
4346 MonoDomain *domain = sample->frames [i].domain;
4347 void *address = sample->frames [i].base_address;
4350 g_assert (domain && "What happened to the domain pointer?");
4351 g_assert (address && "What happened to the instruction pointer?");
4353 MonoJitInfo *ji = mono_jit_info_table_find (domain, (char *) address);
4356 sample->frames [i].method = mono_jit_info_get_method (ji);
4360 ENTER_LOG (&sample_hits_ctr, logbuffer,
4361 EVENT_SIZE /* event */ +
4362 BYTE_SIZE /* type */ +
4363 LEB128_SIZE /* tid */ +
4364 LEB128_SIZE /* count */ +
4366 LEB128_SIZE /* ip */
4368 LEB128_SIZE /* managed count */ +
4370 LEB128_SIZE /* method */
4374 emit_event_time (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_HIT, sample->time);
4375 emit_byte (logbuffer, SAMPLE_CYCLES);
4376 emit_ptr (logbuffer, (void *) sample->tid);
4377 emit_value (logbuffer, 1);
4379 // TODO: Actual native unwinding.
4380 for (int i = 0; i < 1; ++i) {
4381 emit_ptr (logbuffer, sample->ip);
4382 add_code_pointer ((uintptr_t) sample->ip);
4385 /* new in data version 6 */
4386 emit_uvalue (logbuffer, sample->count);
4388 for (int i = 0; i < sample->count; ++i)
4389 emit_method (logbuffer, sample->frames [i].method);
4391 EXIT_LOG_EXPLICIT (DO_SEND);
4393 mono_thread_hazardous_try_free (sample, reuse_sample_hit);
4395 dump_unmanaged_coderefs (prof);
4402 dumper_thread (void *arg)
4404 MonoProfiler *prof = (MonoProfiler *)arg;
4406 mono_threads_attach_tools_thread ();
4407 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler dumper");
4409 MonoProfilerThread *thread = init_thread (prof, FALSE);
4411 while (InterlockedRead (&prof->run_dumper_thread)) {
4413 * Flush samples every second so it doesn't seem like the profiler is
4414 * not working if the program is mostly idle.
4416 if (mono_os_sem_timedwait (&prof->dumper_queue_sem, 1000, MONO_SEM_FLAGS_NONE) == MONO_SEM_TIMEDWAIT_RET_TIMEDOUT)
4417 send_log_unsafe (FALSE);
4419 handle_dumper_queue_entry (prof);
4422 /* Drain any remaining entries on shutdown. */
4423 while (handle_dumper_queue_entry (prof));
4425 send_log_unsafe (FALSE);
4426 deinit_thread (thread);
4428 mono_thread_info_detach ();
4434 start_dumper_thread (MonoProfiler* prof)
4436 InterlockedWrite (&prof->run_dumper_thread, 1);
4438 if (!mono_native_thread_create (&prof->dumper_thread, dumper_thread, prof)) {
4439 fprintf (stderr, "Could not start dumper thread\n");
4445 register_counter (const char *name, gint32 *counter)
4447 mono_counters_register (name, MONO_COUNTER_UINT | MONO_COUNTER_PROFILER | MONO_COUNTER_MONOTONIC, counter);
4451 runtime_initialized (MonoProfiler *profiler)
4453 InterlockedWrite (&runtime_inited, 1);
4455 register_counter ("Sample events allocated", &sample_allocations_ctr);
4456 register_counter ("Log buffers allocated", &buffer_allocations_ctr);
4458 register_counter ("Event: Sync points", &sync_points_ctr);
4459 register_counter ("Event: Heap objects", &heap_objects_ctr);
4460 register_counter ("Event: Heap starts", &heap_starts_ctr);
4461 register_counter ("Event: Heap ends", &heap_ends_ctr);
4462 register_counter ("Event: Heap roots", &heap_roots_ctr);
4463 register_counter ("Event: GC events", &gc_events_ctr);
4464 register_counter ("Event: GC resizes", &gc_resizes_ctr);
4465 register_counter ("Event: GC allocations", &gc_allocs_ctr);
4466 register_counter ("Event: GC moves", &gc_moves_ctr);
4467 register_counter ("Event: GC handle creations", &gc_handle_creations_ctr);
4468 register_counter ("Event: GC handle deletions", &gc_handle_deletions_ctr);
4469 register_counter ("Event: GC finalize starts", &finalize_begins_ctr);
4470 register_counter ("Event: GC finalize ends", &finalize_ends_ctr);
4471 register_counter ("Event: GC finalize object starts", &finalize_object_begins_ctr);
4472 register_counter ("Event: GC finalize object ends", &finalize_object_ends_ctr);
4473 register_counter ("Event: Image loads", &image_loads_ctr);
4474 register_counter ("Event: Image unloads", &image_unloads_ctr);
4475 register_counter ("Event: Assembly loads", &assembly_loads_ctr);
4476 register_counter ("Event: Assembly unloads", &assembly_unloads_ctr);
4477 register_counter ("Event: Class loads", &class_loads_ctr);
4478 register_counter ("Event: Class unloads", &class_unloads_ctr);
4479 register_counter ("Event: Method entries", &method_entries_ctr);
4480 register_counter ("Event: Method exits", &method_exits_ctr);
4481 register_counter ("Event: Method exception leaves", &method_exception_exits_ctr);
4482 register_counter ("Event: Method JITs", &method_jits_ctr);
4483 register_counter ("Event: Code buffers", &code_buffers_ctr);
4484 register_counter ("Event: Exception throws", &exception_throws_ctr);
4485 register_counter ("Event: Exception clauses", &exception_clauses_ctr);
4486 register_counter ("Event: Monitor events", &monitor_events_ctr);
4487 register_counter ("Event: Thread starts", &thread_starts_ctr);
4488 register_counter ("Event: Thread ends", &thread_ends_ctr);
4489 register_counter ("Event: Thread names", &thread_names_ctr);
4490 register_counter ("Event: Domain loads", &domain_loads_ctr);
4491 register_counter ("Event: Domain unloads", &domain_unloads_ctr);
4492 register_counter ("Event: Domain names", &domain_names_ctr);
4493 register_counter ("Event: Context loads", &context_loads_ctr);
4494 register_counter ("Event: Context unloads", &context_unloads_ctr);
4495 register_counter ("Event: Sample binaries", &sample_ubins_ctr);
4496 register_counter ("Event: Sample symbols", &sample_usyms_ctr);
4497 register_counter ("Event: Sample hits", &sample_hits_ctr);
4498 register_counter ("Event: Counter descriptors", &counter_descriptors_ctr);
4499 register_counter ("Event: Counter samples", &counter_samples_ctr);
4500 register_counter ("Event: Performance counter descriptors", &perfcounter_descriptors_ctr);
4501 register_counter ("Event: Performance counter samples", &perfcounter_samples_ctr);
4502 register_counter ("Event: Coverage methods", &coverage_methods_ctr);
4503 register_counter ("Event: Coverage statements", &coverage_statements_ctr);
4504 register_counter ("Event: Coverage classes", &coverage_classes_ctr);
4505 register_counter ("Event: Coverage assemblies", &coverage_assemblies_ctr);
4507 counters_init (profiler);
4510 * We must start the helper thread before the writer thread. This is
4511 * because the helper thread sets up the command port which is written to
4512 * the log header by the writer thread.
4514 start_helper_thread (profiler);
4515 start_writer_thread (profiler);
4516 start_dumper_thread (profiler);
4520 create_profiler (const char *args, const char *filename, GPtrArray *filters)
4523 int force_delete = 0;
4525 log_profiler = (MonoProfiler *) g_calloc (1, sizeof (MonoProfiler));
4526 log_profiler->args = pstrdup (args);
4527 log_profiler->command_port = command_port;
4529 if (filename && *filename == '-') {
4532 g_warning ("WARNING: the output:-FILENAME option is deprecated, the profiler now always overrides the output file\n");
4535 //If filename begin with +, append the pid at the end
4536 if (filename && *filename == '+')
4537 filename = g_strdup_printf ("%s.%d", filename + 1, getpid ());
4542 filename = "|mprof-report -";
4544 filename = "output.mlpd";
4545 nf = (char*)filename;
4547 nf = new_filename (filename);
4549 int s = strlen (nf) + 32;
4550 char *p = (char *) g_malloc (s);
4551 snprintf (p, s, "|mprof-report '--out=%s' -", nf);
4557 log_profiler->file = popen (nf + 1, "w");
4558 log_profiler->pipe_output = 1;
4559 } else if (*nf == '#') {
4560 int fd = strtol (nf + 1, NULL, 10);
4561 log_profiler->file = fdopen (fd, "a");
4565 log_profiler->file = fopen (nf, "wb");
4567 if (!log_profiler->file) {
4568 fprintf (stderr, "Cannot create profiler output: %s\n", nf);
4572 #if defined (HAVE_SYS_ZLIB)
4574 log_profiler->gzfile = gzdopen (fileno (log_profiler->file), "wb");
4578 * If you hit this assert while increasing MAX_FRAMES, you need to increase
4579 * SAMPLE_BLOCK_SIZE as well.
4581 g_assert (SAMPLE_SLOT_SIZE (MAX_FRAMES) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (SAMPLE_BLOCK_SIZE));
4583 // FIXME: We should free this stuff too.
4584 mono_lock_free_allocator_init_size_class (&log_profiler->sample_size_class, SAMPLE_SLOT_SIZE (num_frames), SAMPLE_BLOCK_SIZE);
4585 mono_lock_free_allocator_init_allocator (&log_profiler->sample_allocator, &log_profiler->sample_size_class, MONO_MEM_ACCOUNT_PROFILER);
4587 mono_lock_free_queue_init (&log_profiler->sample_reuse_queue);
4589 g_assert (sizeof (WriterQueueEntry) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (WRITER_ENTRY_BLOCK_SIZE));
4591 // FIXME: We should free this stuff too.
4592 mono_lock_free_allocator_init_size_class (&log_profiler->writer_entry_size_class, sizeof (WriterQueueEntry), WRITER_ENTRY_BLOCK_SIZE);
4593 mono_lock_free_allocator_init_allocator (&log_profiler->writer_entry_allocator, &log_profiler->writer_entry_size_class, MONO_MEM_ACCOUNT_PROFILER);
4595 mono_lock_free_queue_init (&log_profiler->writer_queue);
4596 mono_os_sem_init (&log_profiler->writer_queue_sem, 0);
4598 mono_lock_free_queue_init (&log_profiler->dumper_queue);
4599 mono_os_sem_init (&log_profiler->dumper_queue_sem, 0);
4601 mono_os_mutex_init (&log_profiler->method_table_mutex);
4602 log_profiler->method_table = mono_conc_hashtable_new (NULL, NULL);
4605 coverage_init (log_profiler);
4606 log_profiler->coverage_filters = filters;
4608 log_profiler->startup_time = current_time ();
4612 * declaration to silence the compiler: this is the entry point that
4613 * mono will load from the shared library and call.
4616 mono_profiler_startup (const char *desc);
4619 mono_profiler_startup_log (const char *desc);
4622 * this is the entry point that will be used when the profiler
4623 * is embedded inside the main executable.
4626 mono_profiler_startup_log (const char *desc)
4628 mono_profiler_startup (desc);
4632 mono_profiler_startup (const char *desc)
4634 GPtrArray *filters = NULL;
4636 proflog_parse_args (&config, desc [3] == ':' ? desc + 4 : "");
4638 //XXX maybe later cleanup to use config directly
4639 nocalls = !(config.effective_mask & PROFLOG_CALL_EVENTS);
4640 no_counters = !(config.effective_mask & PROFLOG_COUNTER_EVENTS);
4641 do_report = config.do_report;
4642 do_debug = config.do_debug;
4643 do_heap_shot = (config.effective_mask & PROFLOG_HEAPSHOT_FEATURE);
4644 hs_mode_ondemand = config.hs_mode_ondemand;
4645 hs_mode_ms = config.hs_mode_ms;
4646 hs_mode_gc = config.hs_mode_gc;
4647 do_mono_sample = (config.effective_mask & PROFLOG_SAMPLING_FEATURE);
4648 use_zip = config.use_zip;
4649 command_port = config.command_port;
4650 num_frames = config.num_frames;
4651 notraces = config.notraces;
4652 max_allocated_sample_hits = config.max_allocated_sample_hits;
4653 max_call_depth = config.max_call_depth;
4654 do_coverage = (config.effective_mask & PROFLOG_CODE_COV_FEATURE);
4655 debug_coverage = config.debug_coverage;
4656 only_coverage = config.only_coverage;
4658 if (config.cov_filter_files) {
4659 filters = g_ptr_array_new ();
4661 for (i = 0; i < config.cov_filter_files->len; ++i) {
4662 const char *name = config.cov_filter_files->pdata [i];
4663 parse_cov_filter_file (filters, name);
4671 create_profiler (desc, config.output_filename, filters);
4673 mono_lls_init (&profiler_thread_list, NULL);
4675 //This two events are required for the profiler to work
4676 int events = MONO_PROFILE_THREADS | MONO_PROFILE_GC;
4678 //Required callbacks
4679 mono_profiler_install (log_profiler, log_shutdown);
4680 mono_profiler_install_runtime_initialized (runtime_initialized);
4682 mono_profiler_install_gc (gc_event, gc_resize);
4683 mono_profiler_install_thread (thread_start, thread_end);
4685 //It's questionable whether we actually want this to be mandatory, maybe put it behind the actual event?
4686 mono_profiler_install_thread_name (thread_name);
4689 if (config.effective_mask & PROFLOG_DOMAIN_EVENTS) {
4690 events |= MONO_PROFILE_APPDOMAIN_EVENTS;
4691 mono_profiler_install_appdomain (NULL, domain_loaded, domain_unloaded, NULL);
4692 mono_profiler_install_appdomain_name (domain_name);
4695 if (config.effective_mask & PROFLOG_ASSEMBLY_EVENTS) {
4696 events |= MONO_PROFILE_ASSEMBLY_EVENTS;
4697 mono_profiler_install_assembly (NULL, assembly_loaded, assembly_unloaded, NULL);
4700 if (config.effective_mask & PROFLOG_MODULE_EVENTS) {
4701 events |= MONO_PROFILE_MODULE_EVENTS;
4702 mono_profiler_install_module (NULL, image_loaded, image_unloaded, NULL);
4705 if (config.effective_mask & PROFLOG_CLASS_EVENTS) {
4706 events |= MONO_PROFILE_CLASS_EVENTS;
4707 mono_profiler_install_class (NULL, class_loaded, class_unloaded, NULL);
4710 if (config.effective_mask & PROFLOG_JIT_COMPILATION_EVENTS) {
4711 events |= MONO_PROFILE_JIT_COMPILATION;
4712 mono_profiler_install_jit_end (method_jitted);
4713 mono_profiler_install_code_buffer_new (code_buffer_new);
4716 if (config.effective_mask & PROFLOG_EXCEPTION_EVENTS) {
4717 events |= MONO_PROFILE_EXCEPTIONS;
4718 mono_profiler_install_exception (throw_exc, method_exc_leave, NULL);
4719 mono_profiler_install_exception_clause (clause_exc);
4722 if (config.effective_mask & PROFLOG_ALLOCATION_EVENTS) {
4723 events |= MONO_PROFILE_ALLOCATIONS;
4724 mono_profiler_install_allocation (gc_alloc);
4727 //PROFLOG_GC_EVENTS is mandatory
4728 //PROFLOG_THREAD_EVENTS is mandatory
4730 if (config.effective_mask & PROFLOG_CALL_EVENTS) {
4731 events |= MONO_PROFILE_ENTER_LEAVE;
4732 mono_profiler_install_enter_leave (method_enter, method_leave);
4735 if (config.effective_mask & PROFLOG_INS_COVERAGE_EVENTS) {
4736 events |= MONO_PROFILE_INS_COVERAGE;
4737 mono_profiler_install_coverage_filter (coverage_filter);
4740 //XXX should we check for PROFLOG_SAMPLING_FEATURE instead??
4741 if (config.effective_mask & PROFLOG_SAMPLING_EVENTS) {
4742 events |= MONO_PROFILE_STATISTICAL;
4743 mono_profiler_set_statistical_mode (config.sampling_mode, config.sample_freq);
4744 mono_profiler_install_statistical (mono_sample_hit);
4747 if (config.effective_mask & PROFLOG_MONITOR_EVENTS) {
4748 events |= MONO_PROFILE_MONITOR_EVENTS;
4749 mono_profiler_install_monitor (monitor_event);
4752 if (config.effective_mask & PROFLOG_GC_MOVES_EVENTS) {
4753 events |= MONO_PROFILE_GC_MOVES;
4754 mono_profiler_install_gc_moves (gc_moves);
4757 // TODO split those in two profiler events
4758 if (config.effective_mask & (PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_HANDLE_EVENTS)) {
4759 events |= MONO_PROFILE_GC_ROOTS;
4760 mono_profiler_install_gc_roots (
4761 config.effective_mask & (PROFLOG_GC_HANDLE_EVENTS) ? gc_handle : NULL,
4762 (config.effective_mask & PROFLOG_GC_ROOT_EVENTS) ? gc_roots : NULL);
4765 if (config.effective_mask & PROFLOG_CONTEXT_EVENTS) {
4766 events |= MONO_PROFILE_CONTEXT_EVENTS;
4767 mono_profiler_install_context (context_loaded, context_unloaded);
4770 if (config.effective_mask & PROFLOG_FINALIZATION_EVENTS) {
4771 events |= MONO_PROFILE_GC_FINALIZATION;
4772 mono_profiler_install_gc_finalize (finalize_begin, finalize_object_begin, finalize_object_end, finalize_end);
4773 } else if (ENABLED (PROFLOG_HEAPSHOT_FEATURE) && config.hs_mode_ondemand) {
4774 //On Demand heapshot uses the finalizer thread to force a collection and thus a heapshot
4775 events |= MONO_PROFILE_GC_FINALIZATION;
4776 mono_profiler_install_gc_finalize (NULL, NULL, NULL, finalize_end);
4779 //PROFLOG_COUNTER_EVENTS is a pseudo event controled by the no_counters global var
4780 //PROFLOG_GC_HANDLE_EVENTS is handled together with PROFLOG_GC_ROOT_EVENTS
4782 mono_profiler_set_events ((MonoProfileFlags)events);