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 take
562 * care of a bunch of stuff that can be repetitive and error-prone, such as
563 * acquiring/releasing the buffer lock, incrementing the event counter,
564 * expanding the log buffer, processing requests, etc. They also create a scope
565 * so that it's harder to leak the LogBuffer pointer, which can be problematic
566 * as the pointer is unstable when the buffer lock isn't acquired.
569 #define ENTER_LOG(COUNTER, BUFFER, SIZE) \
571 MonoProfilerThread *thread__ = PROF_TLS_GET (); \
572 if (thread__->attached) \
574 g_assert (!thread__->busy && "Why are we trying to write a new event while already writing one?"); \
575 thread__->busy = TRUE; \
576 InterlockedIncrement ((COUNTER)); \
577 LogBuffer *BUFFER = ensure_logbuf_unsafe (thread__, (SIZE))
579 #define EXIT_LOG_EXPLICIT(SEND) \
580 thread__->busy = FALSE; \
582 send_log_unsafe (TRUE); \
583 if (thread__->attached) \
587 // Pass these to EXIT_LOG_EXPLICIT () for easier reading.
589 #define NO_SEND FALSE
591 #define EXIT_LOG EXIT_LOG_EXPLICIT (DO_SEND)
593 static volatile gint32 buffer_rwlock_count;
594 static volatile gpointer buffer_rwlock_exclusive;
596 // Can be used recursively.
601 * If the thread holding the exclusive lock tries to modify the
602 * reader count, just make it a no-op. This way, we also avoid
603 * invoking the GC safe point macros below, which could break if
604 * done from a thread that is currently the initiator of STW.
606 * In other words, we rely on the fact that the GC thread takes
607 * the exclusive lock in the gc_event () callback when the world
610 if (InterlockedReadPointer (&buffer_rwlock_exclusive) != (gpointer) thread_id ()) {
613 while (InterlockedReadPointer (&buffer_rwlock_exclusive))
614 mono_thread_info_yield ();
616 InterlockedIncrement (&buffer_rwlock_count);
621 mono_memory_barrier ();
627 mono_memory_barrier ();
629 // See the comment in buffer_lock ().
630 if (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id ())
633 g_assert (InterlockedRead (&buffer_rwlock_count) && "Why are we trying to decrement a zero reader count?");
635 InterlockedDecrement (&buffer_rwlock_count);
638 // Cannot be used recursively.
640 buffer_lock_excl (void)
642 gpointer tid = (gpointer) thread_id ();
644 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) != tid && "Why are we taking the exclusive lock twice?");
648 while (InterlockedCompareExchangePointer (&buffer_rwlock_exclusive, tid, 0))
649 mono_thread_info_yield ();
651 while (InterlockedRead (&buffer_rwlock_count))
652 mono_thread_info_yield ();
656 mono_memory_barrier ();
660 buffer_unlock_excl (void)
662 mono_memory_barrier ();
664 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) && "Why is the exclusive lock not held?");
665 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why does another thread hold the exclusive lock?");
666 g_assert (!InterlockedRead (&buffer_rwlock_count) && "Why are there readers when the exclusive lock is held?");
668 InterlockedWritePointer (&buffer_rwlock_exclusive, NULL);
671 typedef struct _BinaryObject BinaryObject;
672 struct _BinaryObject {
678 struct _MonoProfiler {
680 #if defined (HAVE_SYS_ZLIB)
684 uint64_t startup_time;
689 MonoNativeThreadId helper_thread;
690 MonoNativeThreadId writer_thread;
691 MonoNativeThreadId dumper_thread;
692 volatile gint32 run_writer_thread;
693 MonoLockFreeAllocSizeClass writer_entry_size_class;
694 MonoLockFreeAllocator writer_entry_allocator;
695 MonoLockFreeQueue writer_queue;
696 MonoSemType writer_queue_sem;
697 MonoConcurrentHashTable *method_table;
698 mono_mutex_t method_table_mutex;
699 volatile gint32 run_dumper_thread;
700 MonoLockFreeQueue dumper_queue;
701 MonoSemType dumper_queue_sem;
702 MonoLockFreeAllocSizeClass sample_size_class;
703 MonoLockFreeAllocator sample_allocator;
704 MonoLockFreeQueue sample_reuse_queue;
705 BinaryObject *binary_objects;
706 GPtrArray *coverage_filters;
710 MonoLockFreeQueueNode node;
715 #define WRITER_ENTRY_BLOCK_SIZE (mono_pagesize ())
725 #define PROF_TLS_SET(VAL) (TlsSetValue (profiler_tls, (VAL)))
726 #define PROF_TLS_GET() ((MonoProfilerThread *) TlsGetValue (profiler_tls))
727 #define PROF_TLS_INIT() (profiler_tls = TlsAlloc ())
728 #define PROF_TLS_FREE() (TlsFree (profiler_tls))
730 static DWORD profiler_tls;
734 #define PROF_TLS_SET(VAL) (profiler_tls = (VAL))
735 #define PROF_TLS_GET() (profiler_tls)
736 #define PROF_TLS_INIT()
737 #define PROF_TLS_FREE()
739 static __thread MonoProfilerThread *profiler_tls;
743 #define PROF_TLS_SET(VAL) (pthread_setspecific (profiler_tls, (VAL)))
744 #define PROF_TLS_GET() ((MonoProfilerThread *) pthread_getspecific (profiler_tls))
745 #define PROF_TLS_INIT() (pthread_key_create (&profiler_tls, NULL))
746 #define PROF_TLS_FREE() (pthread_key_delete (profiler_tls))
748 static pthread_key_t profiler_tls;
753 pstrdup (const char *s)
755 int len = strlen (s) + 1;
756 char *p = (char *) g_malloc (len);
762 alloc_buffer (int size)
764 return mono_valloc (NULL, size, MONO_MMAP_READ | MONO_MMAP_WRITE | MONO_MMAP_ANON | MONO_MMAP_PRIVATE, MONO_MEM_ACCOUNT_PROFILER);
768 free_buffer (void *buf, int size)
770 mono_vfree (buf, size, MONO_MEM_ACCOUNT_PROFILER);
774 create_buffer (uintptr_t tid)
776 LogBuffer* buf = (LogBuffer *) alloc_buffer (BUFFER_SIZE);
778 InterlockedIncrement (&buffer_allocations_ctr);
780 buf->size = BUFFER_SIZE;
781 buf->time_base = current_time ();
782 buf->last_time = buf->time_base;
783 buf->buf_end = (unsigned char *) buf + buf->size;
784 buf->cursor = buf->buf;
785 buf->thread_id = tid;
791 * Must be called with the reader lock held if thread is the current thread, or
792 * the exclusive lock if thread is a different thread. However, if thread is
793 * the current thread, and init_thread () was called with add_to_lls = FALSE,
794 * then no locking is necessary.
797 init_buffer_state (MonoProfilerThread *thread)
799 thread->buffer = create_buffer (thread->node.key);
800 thread->methods = NULL;
804 clear_hazard_pointers (MonoThreadHazardPointers *hp)
806 mono_hazard_pointer_clear (hp, 0);
807 mono_hazard_pointer_clear (hp, 1);
808 mono_hazard_pointer_clear (hp, 2);
811 static MonoProfilerThread *
812 init_thread (MonoProfiler *prof, gboolean add_to_lls)
814 MonoProfilerThread *thread = PROF_TLS_GET ();
817 * Sometimes we may try to initialize a thread twice. One example is the
818 * main thread: We initialize it when setting up the profiler, but we will
819 * also get a thread_start () callback for it. Another example is when
820 * attaching new threads to the runtime: We may get a gc_alloc () callback
821 * for that thread's thread object (where we initialize it), soon followed
822 * by a thread_start () callback.
824 * These cases are harmless anyhow. Just return if we've already done the
825 * initialization work.
830 thread = g_malloc (sizeof (MonoProfilerThread));
831 thread->node.key = thread_id ();
832 thread->profiler = prof;
833 thread->attached = add_to_lls;
834 thread->call_depth = 0;
836 thread->ended = FALSE;
838 init_buffer_state (thread);
841 * Some internal profiler threads don't need to be cleaned up
842 * by the main thread on shutdown.
845 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
846 g_assert (mono_lls_insert (&profiler_thread_list, hp, &thread->node) && "Why can't we insert the thread in the LLS?");
847 clear_hazard_pointers (hp);
850 PROF_TLS_SET (thread);
855 // Only valid if init_thread () was called with add_to_lls = FALSE.
857 deinit_thread (MonoProfilerThread *thread)
859 g_assert (!thread->attached && "Why are we manually freeing an attached thread?");
865 // Only valid if init_thread () was called with add_to_lls = FALSE.
867 ensure_logbuf_unsafe (MonoProfilerThread *thread, int bytes)
869 LogBuffer *old = thread->buffer;
871 if (old && old->cursor + bytes + 100 < old->buf_end)
874 LogBuffer *new_ = create_buffer (thread->node.key);
876 thread->buffer = new_;
882 encode_uleb128 (uint64_t value, uint8_t *buf, uint8_t **endbuf)
887 uint8_t b = value & 0x7f;
890 if (value != 0) /* more bytes to come */
900 encode_sleb128 (intptr_t value, uint8_t *buf, uint8_t **endbuf)
903 int negative = (value < 0);
904 unsigned int size = sizeof (intptr_t) * 8;
912 /* the following is unnecessary if the
913 * implementation of >>= uses an arithmetic rather
914 * than logical shift for a signed left operand
918 value |= - ((intptr_t) 1 <<(size - 7));
920 /* sign bit of byte is second high order bit (0x40) */
921 if ((value == 0 && !(byte & 0x40)) ||
922 (value == -1 && (byte & 0x40)))
934 emit_byte (LogBuffer *logbuffer, int value)
936 logbuffer->cursor [0] = value;
939 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
943 emit_value (LogBuffer *logbuffer, int value)
945 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
947 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
951 emit_time (LogBuffer *logbuffer, uint64_t value)
953 uint64_t tdiff = value - logbuffer->last_time;
954 encode_uleb128 (tdiff, logbuffer->cursor, &logbuffer->cursor);
955 logbuffer->last_time = value;
957 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
961 emit_event_time (LogBuffer *logbuffer, int event, uint64_t time)
963 emit_byte (logbuffer, event);
964 emit_time (logbuffer, time);
968 emit_event (LogBuffer *logbuffer, int event)
970 emit_event_time (logbuffer, event, current_time ());
974 emit_svalue (LogBuffer *logbuffer, int64_t value)
976 encode_sleb128 (value, logbuffer->cursor, &logbuffer->cursor);
978 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
982 emit_uvalue (LogBuffer *logbuffer, uint64_t value)
984 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
986 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
990 emit_ptr (LogBuffer *logbuffer, void *ptr)
992 if (!logbuffer->ptr_base)
993 logbuffer->ptr_base = (uintptr_t) ptr;
995 emit_svalue (logbuffer, (intptr_t) ptr - logbuffer->ptr_base);
997 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1001 emit_method_inner (LogBuffer *logbuffer, void *method)
1003 if (!logbuffer->method_base) {
1004 logbuffer->method_base = (intptr_t) method;
1005 logbuffer->last_method = (intptr_t) method;
1008 encode_sleb128 ((intptr_t) ((char *) method - (char *) logbuffer->last_method), logbuffer->cursor, &logbuffer->cursor);
1009 logbuffer->last_method = (intptr_t) method;
1011 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1015 register_method_local (MonoMethod *method, MonoJitInfo *ji)
1017 MonoProfilerThread *thread = PROF_TLS_GET ();
1019 if (!mono_conc_hashtable_lookup (thread->profiler->method_table, method)) {
1020 MethodInfo *info = (MethodInfo *) g_malloc (sizeof (MethodInfo));
1022 info->method = method;
1024 info->time = current_time ();
1026 GPtrArray *arr = thread->methods ? thread->methods : (thread->methods = g_ptr_array_new ());
1027 g_ptr_array_add (arr, info);
1032 emit_method (LogBuffer *logbuffer, MonoMethod *method)
1034 register_method_local (method, NULL);
1035 emit_method_inner (logbuffer, method);
1039 emit_obj (LogBuffer *logbuffer, void *ptr)
1041 if (!logbuffer->obj_base)
1042 logbuffer->obj_base = (uintptr_t) ptr >> 3;
1044 emit_svalue (logbuffer, ((uintptr_t) ptr >> 3) - logbuffer->obj_base);
1046 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1050 emit_string (LogBuffer *logbuffer, const char *str, size_t size)
1054 for (; i < size; i++) {
1057 emit_byte (logbuffer, str [i]);
1060 emit_byte (logbuffer, '\0');
1064 emit_double (LogBuffer *logbuffer, double value)
1067 unsigned char buffer[8];
1068 memcpy (buffer, &value, 8);
1069 #if G_BYTE_ORDER == G_BIG_ENDIAN
1070 for (i = 7; i >= 0; i--)
1072 for (i = 0; i < 8; i++)
1074 emit_byte (logbuffer, buffer[i]);
1078 write_int16 (char *buf, int32_t value)
1081 for (i = 0; i < 2; ++i) {
1089 write_int32 (char *buf, int32_t value)
1092 for (i = 0; i < 4; ++i) {
1100 write_int64 (char *buf, int64_t value)
1103 for (i = 0; i < 8; ++i) {
1111 write_header_string (char *p, const char *str)
1113 size_t len = strlen (str) + 1;
1115 p = write_int32 (p, len);
1122 dump_header (MonoProfiler *profiler)
1124 const char *args = profiler->args;
1125 const char *arch = mono_config_get_cpu ();
1126 const char *os = mono_config_get_os ();
1128 char *hbuf = g_malloc (
1129 sizeof (gint32) /* header id */ +
1130 sizeof (gint8) /* major version */ +
1131 sizeof (gint8) /* minor version */ +
1132 sizeof (gint8) /* data version */ +
1133 sizeof (gint8) /* word size */ +
1134 sizeof (gint64) /* startup time */ +
1135 sizeof (gint32) /* timer overhead */ +
1136 sizeof (gint32) /* flags */ +
1137 sizeof (gint32) /* process id */ +
1138 sizeof (gint16) /* command port */ +
1139 sizeof (gint32) + strlen (args) + 1 /* arguments */ +
1140 sizeof (gint32) + strlen (arch) + 1 /* architecture */ +
1141 sizeof (gint32) + strlen (os) + 1 /* operating system */
1145 p = write_int32 (p, LOG_HEADER_ID);
1146 *p++ = LOG_VERSION_MAJOR;
1147 *p++ = LOG_VERSION_MINOR;
1148 *p++ = LOG_DATA_VERSION;
1149 *p++ = sizeof (void *);
1150 p = write_int64 (p, ((uint64_t) time (NULL)) * 1000);
1151 p = write_int32 (p, timer_overhead);
1152 p = write_int32 (p, 0); /* flags */
1153 p = write_int32 (p, process_id ());
1154 p = write_int16 (p, profiler->command_port);
1155 p = write_header_string (p, args);
1156 p = write_header_string (p, arch);
1157 p = write_header_string (p, os);
1159 #if defined (HAVE_SYS_ZLIB)
1160 if (profiler->gzfile) {
1161 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1165 fwrite (hbuf, p - hbuf, 1, profiler->file);
1166 fflush (profiler->file);
1173 * Must be called with the reader lock held if thread is the current thread, or
1174 * the exclusive lock if thread is a different thread. However, if thread is
1175 * the current thread, and init_thread () was called with add_to_lls = FALSE,
1176 * then no locking is necessary.
1179 send_buffer (MonoProfilerThread *thread)
1181 WriterQueueEntry *entry = mono_lock_free_alloc (&thread->profiler->writer_entry_allocator);
1182 entry->methods = thread->methods;
1183 entry->buffer = thread->buffer;
1185 mono_lock_free_queue_node_init (&entry->node, FALSE);
1187 mono_lock_free_queue_enqueue (&thread->profiler->writer_queue, &entry->node);
1188 mono_os_sem_post (&thread->profiler->writer_queue_sem);
1192 free_thread (gpointer p)
1194 MonoProfilerThread *thread = p;
1196 if (!thread->ended) {
1198 * The thread is being cleaned up by the main thread during
1199 * shutdown. This typically happens for internal runtime
1200 * threads. We need to synthesize a thread end event.
1203 InterlockedIncrement (&thread_ends_ctr);
1205 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
1206 LogBuffer *buf = ensure_logbuf_unsafe (thread,
1207 EVENT_SIZE /* event */ +
1208 BYTE_SIZE /* type */ +
1209 LEB128_SIZE /* tid */
1212 emit_event (buf, TYPE_END_UNLOAD | TYPE_METADATA);
1213 emit_byte (buf, TYPE_THREAD);
1214 emit_ptr (buf, (void *) thread->node.key);
1218 send_buffer (thread);
1224 remove_thread (MonoProfilerThread *thread)
1226 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
1228 if (mono_lls_remove (&profiler_thread_list, hp, &thread->node))
1229 mono_thread_hazardous_try_free (thread, free_thread);
1231 clear_hazard_pointers (hp);
1235 dump_buffer (MonoProfiler *profiler, LogBuffer *buf)
1241 dump_buffer (profiler, buf->next);
1243 if (buf->cursor - buf->buf) {
1244 p = write_int32 (p, BUF_ID);
1245 p = write_int32 (p, buf->cursor - buf->buf);
1246 p = write_int64 (p, buf->time_base);
1247 p = write_int64 (p, buf->ptr_base);
1248 p = write_int64 (p, buf->obj_base);
1249 p = write_int64 (p, buf->thread_id);
1250 p = write_int64 (p, buf->method_base);
1252 #if defined (HAVE_SYS_ZLIB)
1253 if (profiler->gzfile) {
1254 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1255 gzwrite (profiler->gzfile, buf->buf, buf->cursor - buf->buf);
1259 fwrite (hbuf, p - hbuf, 1, profiler->file);
1260 fwrite (buf->buf, buf->cursor - buf->buf, 1, profiler->file);
1261 fflush (profiler->file);
1265 free_buffer (buf, buf->size);
1269 dump_buffer_threadless (MonoProfiler *profiler, LogBuffer *buf)
1271 for (LogBuffer *iter = buf; iter; iter = iter->next)
1272 iter->thread_id = 0;
1274 dump_buffer (profiler, buf);
1277 // Only valid if init_thread () was called with add_to_lls = FALSE.
1279 send_log_unsafe (gboolean if_needed)
1281 MonoProfilerThread *thread = PROF_TLS_GET ();
1283 if (!if_needed || (if_needed && thread->buffer->next)) {
1284 if (!thread->attached)
1285 for (LogBuffer *iter = thread->buffer; iter; iter = iter->next)
1286 iter->thread_id = 0;
1288 send_buffer (thread);
1289 init_buffer_state (thread);
1293 // Assumes that the exclusive lock is held.
1295 sync_point_flush (void)
1297 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why don't we hold the exclusive lock?");
1299 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
1300 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
1302 send_buffer (thread);
1303 init_buffer_state (thread);
1304 } MONO_LLS_FOREACH_SAFE_END
1307 // Assumes that the exclusive lock is held.
1309 sync_point_mark (MonoProfilerSyncPointType type)
1311 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why don't we hold the exclusive lock?");
1313 ENTER_LOG (&sync_points_ctr, logbuffer,
1314 EVENT_SIZE /* event */ +
1315 LEB128_SIZE /* type */
1318 emit_event (logbuffer, TYPE_META | TYPE_SYNC_POINT);
1319 emit_byte (logbuffer, type);
1321 EXIT_LOG_EXPLICIT (NO_SEND);
1323 send_log_unsafe (FALSE);
1326 // Assumes that the exclusive lock is held.
1328 sync_point (MonoProfilerSyncPointType type)
1330 sync_point_flush ();
1331 sync_point_mark (type);
1335 gc_reference (MonoObject *obj, MonoClass *klass, uintptr_t size, uintptr_t num, MonoObject **refs, uintptr_t *offsets, void *data)
1337 /* account for object alignment in the heap */
1341 ENTER_LOG (&heap_objects_ctr, logbuffer,
1342 EVENT_SIZE /* event */ +
1343 LEB128_SIZE /* obj */ +
1344 LEB128_SIZE /* klass */ +
1345 LEB128_SIZE /* size */ +
1346 LEB128_SIZE /* num */ +
1348 LEB128_SIZE /* offset */ +
1349 LEB128_SIZE /* ref */
1353 emit_event (logbuffer, TYPE_HEAP_OBJECT | TYPE_HEAP);
1354 emit_obj (logbuffer, obj);
1355 emit_ptr (logbuffer, klass);
1356 emit_value (logbuffer, size);
1357 emit_value (logbuffer, num);
1359 uintptr_t last_offset = 0;
1361 for (int i = 0; i < num; ++i) {
1362 emit_value (logbuffer, offsets [i] - last_offset);
1363 last_offset = offsets [i];
1364 emit_obj (logbuffer, refs [i]);
1367 EXIT_LOG_EXPLICIT (DO_SEND);
1372 static unsigned int hs_mode_ms = 0;
1373 static unsigned int hs_mode_gc = 0;
1374 static unsigned int hs_mode_ondemand = 0;
1375 static unsigned int gc_count = 0;
1376 static uint64_t last_hs_time = 0;
1377 static gboolean do_heap_walk = FALSE;
1378 static gboolean ignore_heap_events;
1381 gc_roots (MonoProfiler *prof, int num, void **objects, int *root_types, uintptr_t *extra_info)
1383 if (ignore_heap_events)
1386 ENTER_LOG (&heap_roots_ctr, logbuffer,
1387 EVENT_SIZE /* event */ +
1388 LEB128_SIZE /* num */ +
1389 LEB128_SIZE /* collections */ +
1391 LEB128_SIZE /* object */ +
1392 LEB128_SIZE /* root type */ +
1393 LEB128_SIZE /* extra info */
1397 emit_event (logbuffer, TYPE_HEAP_ROOT | TYPE_HEAP);
1398 emit_value (logbuffer, num);
1399 emit_value (logbuffer, mono_gc_collection_count (mono_gc_max_generation ()));
1401 for (int i = 0; i < num; ++i) {
1402 emit_obj (logbuffer, objects [i]);
1403 emit_byte (logbuffer, root_types [i]);
1404 emit_value (logbuffer, extra_info [i]);
1407 EXIT_LOG_EXPLICIT (DO_SEND);
1412 trigger_on_demand_heapshot (void)
1414 if (heapshot_requested)
1415 mono_gc_collect (mono_gc_max_generation ());
1418 #define ALL_GC_EVENTS_MASK (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_EVENTS | PROFLOG_HEAPSHOT_FEATURE)
1421 gc_event (MonoProfiler *profiler, MonoGCEvent ev, int generation)
1423 if (ev == MONO_GC_EVENT_START) {
1424 uint64_t now = current_time ();
1426 if (hs_mode_ms && (now - last_hs_time) / 1000 * 1000 >= hs_mode_ms)
1427 do_heap_walk = TRUE;
1428 else if (hs_mode_gc && !(gc_count % hs_mode_gc))
1429 do_heap_walk = TRUE;
1430 else if (hs_mode_ondemand)
1431 do_heap_walk = heapshot_requested;
1432 else if (!hs_mode_ms && !hs_mode_gc && generation == mono_gc_max_generation ())
1433 do_heap_walk = TRUE;
1435 //If using heapshot, ignore events for collections we don't care
1436 if (ENABLED (PROFLOG_HEAPSHOT_FEATURE)) {
1437 // Ignore events generated during the collection itself (IE GC ROOTS)
1438 ignore_heap_events = !do_heap_walk;
1443 if (ENABLED (PROFLOG_GC_EVENTS)) {
1444 ENTER_LOG (&gc_events_ctr, logbuffer,
1445 EVENT_SIZE /* event */ +
1446 BYTE_SIZE /* gc event */ +
1447 BYTE_SIZE /* generation */
1450 emit_event (logbuffer, TYPE_GC_EVENT | TYPE_GC);
1451 emit_byte (logbuffer, ev);
1452 emit_byte (logbuffer, generation);
1454 EXIT_LOG_EXPLICIT (NO_SEND);
1458 case MONO_GC_EVENT_START:
1459 if (generation == mono_gc_max_generation ())
1463 case MONO_GC_EVENT_PRE_STOP_WORLD_LOCKED:
1465 * Ensure that no thread can be in the middle of writing to
1466 * a buffer when the world stops...
1468 buffer_lock_excl ();
1470 case MONO_GC_EVENT_POST_STOP_WORLD:
1472 * ... So that we now have a consistent view of all buffers.
1473 * This allows us to flush them. We need to do this because
1474 * they may contain object allocation events that need to be
1475 * committed to the log file before any object move events
1476 * that will be produced during this GC.
1478 if (ENABLED (ALL_GC_EVENTS_MASK))
1479 sync_point (SYNC_POINT_WORLD_STOP);
1482 * All heap events are surrounded by a HEAP_START and a HEAP_ENV event.
1483 * Right now, that's the case for GC Moves, GC Roots or heapshots.
1485 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1486 ENTER_LOG (&heap_starts_ctr, logbuffer,
1487 EVENT_SIZE /* event */
1490 emit_event (logbuffer, TYPE_HEAP_START | TYPE_HEAP);
1492 EXIT_LOG_EXPLICIT (DO_SEND);
1496 case MONO_GC_EVENT_PRE_START_WORLD:
1497 if (do_heap_shot && do_heap_walk)
1498 mono_gc_walk_heap (0, gc_reference, NULL);
1500 /* Matching HEAP_END to the HEAP_START from above */
1501 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1502 ENTER_LOG (&heap_ends_ctr, logbuffer,
1503 EVENT_SIZE /* event */
1506 emit_event (logbuffer, TYPE_HEAP_END | TYPE_HEAP);
1508 EXIT_LOG_EXPLICIT (DO_SEND);
1511 if (do_heap_shot && do_heap_walk) {
1512 do_heap_walk = FALSE;
1513 heapshot_requested = 0;
1514 last_hs_time = current_time ();
1518 * Similarly, we must now make sure that any object moves
1519 * written to the GC thread's buffer are flushed. Otherwise,
1520 * object allocation events for certain addresses could come
1521 * after the move events that made those addresses available.
1523 if (ENABLED (ALL_GC_EVENTS_MASK))
1524 sync_point_mark (SYNC_POINT_WORLD_START);
1526 case MONO_GC_EVENT_POST_START_WORLD_UNLOCKED:
1528 * Finally, it is safe to allow other threads to write to
1529 * their buffers again.
1531 buffer_unlock_excl ();
1539 gc_resize (MonoProfiler *profiler, int64_t new_size)
1541 ENTER_LOG (&gc_resizes_ctr, logbuffer,
1542 EVENT_SIZE /* event */ +
1543 LEB128_SIZE /* new size */
1546 emit_event (logbuffer, TYPE_GC_RESIZE | TYPE_GC);
1547 emit_value (logbuffer, new_size);
1549 EXIT_LOG_EXPLICIT (DO_SEND);
1554 MonoMethod* methods [MAX_FRAMES];
1555 int32_t il_offsets [MAX_FRAMES];
1556 int32_t native_offsets [MAX_FRAMES];
1559 static int num_frames = MAX_FRAMES;
1562 walk_stack (MonoMethod *method, int32_t native_offset, int32_t il_offset, mono_bool managed, void* data)
1564 FrameData *frame = (FrameData *)data;
1565 if (method && frame->count < num_frames) {
1566 frame->il_offsets [frame->count] = il_offset;
1567 frame->native_offsets [frame->count] = native_offset;
1568 frame->methods [frame->count++] = method;
1569 //printf ("In %d %s at %d (native: %d)\n", frame->count, mono_method_get_name (method), il_offset, native_offset);
1571 return frame->count == num_frames;
1575 * a note about stack walks: they can cause more profiler events to fire,
1576 * so we need to make sure they don't happen after we started emitting an
1577 * event, hence the collect_bt/emit_bt split.
1580 collect_bt (FrameData *data)
1583 mono_stack_walk_no_il (walk_stack, data);
1587 emit_bt (MonoProfiler *prof, LogBuffer *logbuffer, FrameData *data)
1589 /* FIXME: this is actually tons of data and we should
1590 * just output it the first time and use an id the next
1592 if (data->count > num_frames)
1593 printf ("bad num frames: %d\n", data->count);
1594 emit_value (logbuffer, data->count);
1595 //if (*p != data.count) {
1596 // 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);}
1597 while (data->count) {
1598 emit_method (logbuffer, data->methods [--data->count]);
1603 gc_alloc (MonoProfiler *prof, MonoObject *obj, MonoClass *klass)
1605 init_thread (prof, TRUE);
1607 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_ALLOC_BT : 0;
1609 uintptr_t len = mono_object_get_size (obj);
1610 /* account for object alignment in the heap */
1617 ENTER_LOG (&gc_allocs_ctr, logbuffer,
1618 EVENT_SIZE /* event */ +
1619 LEB128_SIZE /* klass */ +
1620 LEB128_SIZE /* obj */ +
1621 LEB128_SIZE /* size */ +
1623 LEB128_SIZE /* count */ +
1625 LEB128_SIZE /* method */
1630 emit_event (logbuffer, do_bt | TYPE_ALLOC);
1631 emit_ptr (logbuffer, klass);
1632 emit_obj (logbuffer, obj);
1633 emit_value (logbuffer, len);
1636 emit_bt (prof, logbuffer, &data);
1642 gc_moves (MonoProfiler *prof, void **objects, int num)
1644 ENTER_LOG (&gc_moves_ctr, logbuffer,
1645 EVENT_SIZE /* event */ +
1646 LEB128_SIZE /* num */ +
1648 LEB128_SIZE /* object */
1652 emit_event (logbuffer, TYPE_GC_MOVE | TYPE_GC);
1653 emit_value (logbuffer, num);
1655 for (int i = 0; i < num; ++i)
1656 emit_obj (logbuffer, objects [i]);
1658 EXIT_LOG_EXPLICIT (DO_SEND);
1662 gc_handle (MonoProfiler *prof, int op, int type, uintptr_t handle, MonoObject *obj)
1664 int do_bt = nocalls && InterlockedRead (&runtime_inited) && !notraces;
1670 gint32 *ctr = op == MONO_PROFILER_GC_HANDLE_CREATED ? &gc_handle_creations_ctr : &gc_handle_deletions_ctr;
1672 ENTER_LOG (ctr, logbuffer,
1673 EVENT_SIZE /* event */ +
1674 LEB128_SIZE /* type */ +
1675 LEB128_SIZE /* handle */ +
1676 (op == MONO_PROFILER_GC_HANDLE_CREATED ? (
1677 LEB128_SIZE /* obj */
1680 LEB128_SIZE /* count */ +
1682 LEB128_SIZE /* method */
1687 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1688 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_CREATED_BT : TYPE_GC_HANDLE_CREATED) | TYPE_GC);
1689 else if (op == MONO_PROFILER_GC_HANDLE_DESTROYED)
1690 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_DESTROYED_BT : TYPE_GC_HANDLE_DESTROYED) | TYPE_GC);
1692 g_assert_not_reached ();
1694 emit_value (logbuffer, type);
1695 emit_value (logbuffer, handle);
1697 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1698 emit_obj (logbuffer, obj);
1701 emit_bt (prof, logbuffer, &data);
1707 finalize_begin (MonoProfiler *prof)
1709 ENTER_LOG (&finalize_begins_ctr, buf,
1710 EVENT_SIZE /* event */
1713 emit_event (buf, TYPE_GC_FINALIZE_START | TYPE_GC);
1719 finalize_end (MonoProfiler *prof)
1721 trigger_on_demand_heapshot ();
1722 if (ENABLED (PROFLOG_FINALIZATION_EVENTS)) {
1723 ENTER_LOG (&finalize_ends_ctr, buf,
1724 EVENT_SIZE /* event */
1727 emit_event (buf, TYPE_GC_FINALIZE_END | TYPE_GC);
1734 finalize_object_begin (MonoProfiler *prof, MonoObject *obj)
1736 ENTER_LOG (&finalize_object_begins_ctr, buf,
1737 EVENT_SIZE /* event */ +
1738 LEB128_SIZE /* obj */
1741 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_START | TYPE_GC);
1742 emit_obj (buf, obj);
1748 finalize_object_end (MonoProfiler *prof, MonoObject *obj)
1750 ENTER_LOG (&finalize_object_ends_ctr, buf,
1751 EVENT_SIZE /* event */ +
1752 LEB128_SIZE /* obj */
1755 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_END | TYPE_GC);
1756 emit_obj (buf, obj);
1762 push_nesting (char *p, MonoClass *klass)
1767 nesting = mono_class_get_nesting_type (klass);
1769 p = push_nesting (p, nesting);
1773 name = mono_class_get_name (klass);
1774 nspace = mono_class_get_namespace (klass);
1777 p += strlen (nspace);
1787 type_name (MonoClass *klass)
1791 push_nesting (buf, klass);
1792 p = (char *) g_malloc (strlen (buf) + 1);
1798 image_loaded (MonoProfiler *prof, MonoImage *image, int result)
1800 if (result != MONO_PROFILE_OK)
1803 const char *name = mono_image_get_filename (image);
1804 int nlen = strlen (name) + 1;
1806 ENTER_LOG (&image_loads_ctr, logbuffer,
1807 EVENT_SIZE /* event */ +
1808 BYTE_SIZE /* type */ +
1809 LEB128_SIZE /* image */ +
1813 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1814 emit_byte (logbuffer, TYPE_IMAGE);
1815 emit_ptr (logbuffer, image);
1816 memcpy (logbuffer->cursor, name, nlen);
1817 logbuffer->cursor += nlen;
1823 image_unloaded (MonoProfiler *prof, MonoImage *image)
1825 const char *name = mono_image_get_filename (image);
1826 int nlen = strlen (name) + 1;
1828 ENTER_LOG (&image_unloads_ctr, logbuffer,
1829 EVENT_SIZE /* event */ +
1830 BYTE_SIZE /* type */ +
1831 LEB128_SIZE /* image */ +
1835 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1836 emit_byte (logbuffer, TYPE_IMAGE);
1837 emit_ptr (logbuffer, image);
1838 memcpy (logbuffer->cursor, name, nlen);
1839 logbuffer->cursor += nlen;
1845 assembly_loaded (MonoProfiler *prof, MonoAssembly *assembly, int result)
1847 if (result != MONO_PROFILE_OK)
1850 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1851 int nlen = strlen (name) + 1;
1852 MonoImage *image = mono_assembly_get_image (assembly);
1854 ENTER_LOG (&assembly_loads_ctr, logbuffer,
1855 EVENT_SIZE /* event */ +
1856 BYTE_SIZE /* type */ +
1857 LEB128_SIZE /* assembly */ +
1858 LEB128_SIZE /* image */ +
1862 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1863 emit_byte (logbuffer, TYPE_ASSEMBLY);
1864 emit_ptr (logbuffer, assembly);
1865 emit_ptr (logbuffer, image);
1866 memcpy (logbuffer->cursor, name, nlen);
1867 logbuffer->cursor += nlen;
1875 assembly_unloaded (MonoProfiler *prof, MonoAssembly *assembly)
1877 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1878 int nlen = strlen (name) + 1;
1879 MonoImage *image = mono_assembly_get_image (assembly);
1881 ENTER_LOG (&assembly_unloads_ctr, logbuffer,
1882 EVENT_SIZE /* event */ +
1883 BYTE_SIZE /* type */ +
1884 LEB128_SIZE /* assembly */ +
1885 LEB128_SIZE /* image */ +
1889 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1890 emit_byte (logbuffer, TYPE_ASSEMBLY);
1891 emit_ptr (logbuffer, assembly);
1892 emit_ptr (logbuffer, image);
1893 memcpy (logbuffer->cursor, name, nlen);
1894 logbuffer->cursor += nlen;
1902 class_loaded (MonoProfiler *prof, MonoClass *klass, int result)
1904 if (result != MONO_PROFILE_OK)
1909 if (InterlockedRead (&runtime_inited))
1910 name = mono_type_get_name (mono_class_get_type (klass));
1912 name = type_name (klass);
1914 int nlen = strlen (name) + 1;
1915 MonoImage *image = mono_class_get_image (klass);
1917 ENTER_LOG (&class_loads_ctr, logbuffer,
1918 EVENT_SIZE /* event */ +
1919 BYTE_SIZE /* type */ +
1920 LEB128_SIZE /* klass */ +
1921 LEB128_SIZE /* image */ +
1925 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1926 emit_byte (logbuffer, TYPE_CLASS);
1927 emit_ptr (logbuffer, klass);
1928 emit_ptr (logbuffer, image);
1929 memcpy (logbuffer->cursor, name, nlen);
1930 logbuffer->cursor += nlen;
1941 class_unloaded (MonoProfiler *prof, MonoClass *klass)
1945 if (InterlockedRead (&runtime_inited))
1946 name = mono_type_get_name (mono_class_get_type (klass));
1948 name = type_name (klass);
1950 int nlen = strlen (name) + 1;
1951 MonoImage *image = mono_class_get_image (klass);
1953 ENTER_LOG (&class_unloads_ctr, logbuffer,
1954 EVENT_SIZE /* event */ +
1955 BYTE_SIZE /* type */ +
1956 LEB128_SIZE /* klass */ +
1957 LEB128_SIZE /* image */ +
1961 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1962 emit_byte (logbuffer, TYPE_CLASS);
1963 emit_ptr (logbuffer, klass);
1964 emit_ptr (logbuffer, image);
1965 memcpy (logbuffer->cursor, name, nlen);
1966 logbuffer->cursor += nlen;
1976 static void process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method);
1979 method_enter (MonoProfiler *prof, MonoMethod *method)
1981 process_method_enter_coverage (prof, method);
1983 if (!only_coverage && PROF_TLS_GET ()->call_depth++ <= max_call_depth) {
1984 ENTER_LOG (&method_entries_ctr, logbuffer,
1985 EVENT_SIZE /* event */ +
1986 LEB128_SIZE /* method */
1989 emit_event (logbuffer, TYPE_ENTER | TYPE_METHOD);
1990 emit_method (logbuffer, method);
1997 method_leave (MonoProfiler *prof, MonoMethod *method)
1999 if (!only_coverage && --PROF_TLS_GET ()->call_depth <= max_call_depth) {
2000 ENTER_LOG (&method_exits_ctr, logbuffer,
2001 EVENT_SIZE /* event */ +
2002 LEB128_SIZE /* method */
2005 emit_event (logbuffer, TYPE_LEAVE | TYPE_METHOD);
2006 emit_method (logbuffer, method);
2013 method_exc_leave (MonoProfiler *prof, MonoMethod *method)
2015 if (!only_coverage && !nocalls && --PROF_TLS_GET ()->call_depth <= max_call_depth) {
2016 ENTER_LOG (&method_exception_exits_ctr, logbuffer,
2017 EVENT_SIZE /* event */ +
2018 LEB128_SIZE /* method */
2021 emit_event (logbuffer, TYPE_EXC_LEAVE | TYPE_METHOD);
2022 emit_method (logbuffer, method);
2029 method_jitted (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *ji, int result)
2031 if (result != MONO_PROFILE_OK)
2034 register_method_local (method, ji);
2038 code_buffer_new (MonoProfiler *prof, void *buffer, int size, MonoProfilerCodeBufferType type, void *data)
2043 if (type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE) {
2044 name = (char *) data;
2045 nlen = strlen (name) + 1;
2051 ENTER_LOG (&code_buffers_ctr, logbuffer,
2052 EVENT_SIZE /* event */ +
2053 BYTE_SIZE /* type */ +
2054 LEB128_SIZE /* buffer */ +
2055 LEB128_SIZE /* size */ +
2061 emit_event (logbuffer, TYPE_JITHELPER | TYPE_RUNTIME);
2062 emit_byte (logbuffer, type);
2063 emit_ptr (logbuffer, buffer);
2064 emit_value (logbuffer, size);
2067 memcpy (logbuffer->cursor, name, nlen);
2068 logbuffer->cursor += nlen;
2075 throw_exc (MonoProfiler *prof, MonoObject *object)
2077 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_THROW_BT : 0;
2083 ENTER_LOG (&exception_throws_ctr, logbuffer,
2084 EVENT_SIZE /* event */ +
2085 LEB128_SIZE /* object */ +
2087 LEB128_SIZE /* count */ +
2089 LEB128_SIZE /* method */
2094 emit_event (logbuffer, do_bt | TYPE_EXCEPTION);
2095 emit_obj (logbuffer, object);
2098 emit_bt (prof, logbuffer, &data);
2104 clause_exc (MonoProfiler *prof, MonoMethod *method, int clause_type, int clause_num, MonoObject *exc)
2106 ENTER_LOG (&exception_clauses_ctr, logbuffer,
2107 EVENT_SIZE /* event */ +
2108 BYTE_SIZE /* clause type */ +
2109 LEB128_SIZE /* clause num */ +
2110 LEB128_SIZE /* method */
2113 emit_event (logbuffer, TYPE_EXCEPTION | TYPE_CLAUSE);
2114 emit_byte (logbuffer, clause_type);
2115 emit_value (logbuffer, clause_num);
2116 emit_method (logbuffer, method);
2117 emit_obj (logbuffer, exc);
2123 monitor_event (MonoProfiler *profiler, MonoObject *object, MonoProfilerMonitorEvent ev)
2125 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_MONITOR_BT : 0;
2131 ENTER_LOG (&monitor_events_ctr, logbuffer,
2132 EVENT_SIZE /* event */ +
2133 BYTE_SIZE /* ev */ +
2134 LEB128_SIZE /* object */ +
2136 LEB128_SIZE /* count */ +
2138 LEB128_SIZE /* method */
2143 emit_event (logbuffer, do_bt | TYPE_MONITOR);
2144 emit_byte (logbuffer, ev);
2145 emit_obj (logbuffer, object);
2148 emit_bt (profiler, logbuffer, &data);
2154 thread_start (MonoProfiler *prof, uintptr_t tid)
2156 init_thread (prof, TRUE);
2158 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2159 ENTER_LOG (&thread_starts_ctr, logbuffer,
2160 EVENT_SIZE /* event */ +
2161 BYTE_SIZE /* type */ +
2162 LEB128_SIZE /* tid */
2165 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2166 emit_byte (logbuffer, TYPE_THREAD);
2167 emit_ptr (logbuffer, (void*) tid);
2174 thread_end (MonoProfiler *prof, uintptr_t tid)
2176 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2177 ENTER_LOG (&thread_ends_ctr, logbuffer,
2178 EVENT_SIZE /* event */ +
2179 BYTE_SIZE /* type */ +
2180 LEB128_SIZE /* tid */
2183 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2184 emit_byte (logbuffer, TYPE_THREAD);
2185 emit_ptr (logbuffer, (void*) tid);
2187 EXIT_LOG_EXPLICIT (NO_SEND);
2190 MonoProfilerThread *thread = PROF_TLS_GET ();
2192 thread->ended = TRUE;
2193 remove_thread (thread);
2195 PROF_TLS_SET (NULL);
2199 thread_name (MonoProfiler *prof, uintptr_t tid, const char *name)
2201 int len = strlen (name) + 1;
2203 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2204 ENTER_LOG (&thread_names_ctr, logbuffer,
2205 EVENT_SIZE /* event */ +
2206 BYTE_SIZE /* type */ +
2207 LEB128_SIZE /* tid */ +
2211 emit_event (logbuffer, TYPE_METADATA);
2212 emit_byte (logbuffer, TYPE_THREAD);
2213 emit_ptr (logbuffer, (void*)tid);
2214 memcpy (logbuffer->cursor, name, len);
2215 logbuffer->cursor += len;
2222 domain_loaded (MonoProfiler *prof, MonoDomain *domain, int result)
2224 if (result != MONO_PROFILE_OK)
2227 ENTER_LOG (&domain_loads_ctr, logbuffer,
2228 EVENT_SIZE /* event */ +
2229 BYTE_SIZE /* type */ +
2230 LEB128_SIZE /* domain id */
2233 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2234 emit_byte (logbuffer, TYPE_DOMAIN);
2235 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2241 domain_unloaded (MonoProfiler *prof, MonoDomain *domain)
2243 ENTER_LOG (&domain_unloads_ctr, logbuffer,
2244 EVENT_SIZE /* event */ +
2245 BYTE_SIZE /* type */ +
2246 LEB128_SIZE /* domain id */
2249 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2250 emit_byte (logbuffer, TYPE_DOMAIN);
2251 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2257 domain_name (MonoProfiler *prof, MonoDomain *domain, const char *name)
2259 int nlen = strlen (name) + 1;
2261 ENTER_LOG (&domain_names_ctr, logbuffer,
2262 EVENT_SIZE /* event */ +
2263 BYTE_SIZE /* type */ +
2264 LEB128_SIZE /* domain id */ +
2268 emit_event (logbuffer, TYPE_METADATA);
2269 emit_byte (logbuffer, TYPE_DOMAIN);
2270 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2271 memcpy (logbuffer->cursor, name, nlen);
2272 logbuffer->cursor += nlen;
2278 context_loaded (MonoProfiler *prof, MonoAppContext *context)
2280 ENTER_LOG (&context_loads_ctr, logbuffer,
2281 EVENT_SIZE /* event */ +
2282 BYTE_SIZE /* type */ +
2283 LEB128_SIZE /* context id */ +
2284 LEB128_SIZE /* domain id */
2287 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2288 emit_byte (logbuffer, TYPE_CONTEXT);
2289 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2290 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2296 context_unloaded (MonoProfiler *prof, MonoAppContext *context)
2298 ENTER_LOG (&context_unloads_ctr, logbuffer,
2299 EVENT_SIZE /* event */ +
2300 BYTE_SIZE /* type */ +
2301 LEB128_SIZE /* context id */ +
2302 LEB128_SIZE /* domain id */
2305 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2306 emit_byte (logbuffer, TYPE_CONTEXT);
2307 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2308 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2321 MonoLockFreeQueueNode node;
2327 AsyncFrameInfo frames [MONO_ZERO_LEN_ARRAY];
2331 async_walk_stack (MonoMethod *method, MonoDomain *domain, void *base_address, int offset, void *data)
2333 SampleHit *sample = (SampleHit *) data;
2335 if (sample->count < num_frames) {
2336 int i = sample->count;
2338 sample->frames [i].method = method;
2339 sample->frames [i].domain = domain;
2340 sample->frames [i].base_address = base_address;
2341 sample->frames [i].offset = offset;
2346 return sample->count == num_frames;
2349 #define SAMPLE_SLOT_SIZE(FRAMES) (sizeof (SampleHit) + sizeof (AsyncFrameInfo) * (FRAMES - MONO_ZERO_LEN_ARRAY))
2350 #define SAMPLE_BLOCK_SIZE (mono_pagesize ())
2353 enqueue_sample_hit (gpointer p)
2355 SampleHit *sample = p;
2357 mono_lock_free_queue_node_unpoison (&sample->node);
2358 mono_lock_free_queue_enqueue (&sample->prof->dumper_queue, &sample->node);
2359 mono_os_sem_post (&sample->prof->dumper_queue_sem);
2363 mono_sample_hit (MonoProfiler *profiler, unsigned char *ip, void *context)
2366 * Please note: We rely on the runtime loading the profiler with
2367 * MONO_DL_EAGER (RTLD_NOW) so that references to runtime functions within
2368 * this function (and its siblings) are resolved when the profiler is
2369 * loaded. Otherwise, we would potentially invoke the dynamic linker when
2370 * invoking runtime functions, which is not async-signal-safe.
2373 if (InterlockedRead (&in_shutdown))
2376 SampleHit *sample = (SampleHit *) mono_lock_free_queue_dequeue (&profiler->sample_reuse_queue);
2380 * If we're out of reusable sample events and we're not allowed to
2381 * allocate more, we have no choice but to drop the event.
2383 if (InterlockedRead (&sample_allocations_ctr) >= max_allocated_sample_hits)
2386 sample = mono_lock_free_alloc (&profiler->sample_allocator);
2387 sample->prof = profiler;
2388 mono_lock_free_queue_node_init (&sample->node, TRUE);
2390 InterlockedIncrement (&sample_allocations_ctr);
2394 mono_stack_walk_async_safe (&async_walk_stack, context, sample);
2396 sample->time = current_time ();
2397 sample->tid = thread_id ();
2400 mono_thread_hazardous_try_free (sample, enqueue_sample_hit);
2403 static uintptr_t *code_pages = 0;
2404 static int num_code_pages = 0;
2405 static int size_code_pages = 0;
2406 #define CPAGE_SHIFT (9)
2407 #define CPAGE_SIZE (1 << CPAGE_SHIFT)
2408 #define CPAGE_MASK (~(CPAGE_SIZE - 1))
2409 #define CPAGE_ADDR(p) ((p) & CPAGE_MASK)
2412 add_code_page (uintptr_t *hash, uintptr_t hsize, uintptr_t page)
2415 uintptr_t start_pos;
2416 start_pos = (page >> CPAGE_SHIFT) % hsize;
2419 if (hash [i] && CPAGE_ADDR (hash [i]) == CPAGE_ADDR (page)) {
2421 } else if (!hash [i]) {
2428 } while (i != start_pos);
2429 /* should not happen */
2430 printf ("failed code page store\n");
2435 add_code_pointer (uintptr_t ip)
2438 if (num_code_pages * 2 >= size_code_pages) {
2440 uintptr_t old_size = size_code_pages;
2441 size_code_pages *= 2;
2442 if (size_code_pages == 0)
2443 size_code_pages = 16;
2444 n = (uintptr_t *) g_calloc (sizeof (uintptr_t) * size_code_pages, 1);
2445 for (i = 0; i < old_size; ++i) {
2447 add_code_page (n, size_code_pages, code_pages [i]);
2450 g_free (code_pages);
2453 num_code_pages += add_code_page (code_pages, size_code_pages, ip & CPAGE_MASK);
2456 /* ELF code crashes on some systems. */
2457 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2460 dump_ubin (MonoProfiler *prof, const char *filename, uintptr_t load_addr, uint64_t offset, uintptr_t size)
2462 int len = strlen (filename) + 1;
2464 ENTER_LOG (&sample_ubins_ctr, logbuffer,
2465 EVENT_SIZE /* event */ +
2466 LEB128_SIZE /* load address */ +
2467 LEB128_SIZE /* offset */ +
2468 LEB128_SIZE /* size */ +
2469 nlen /* file name */
2472 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_UBIN);
2473 emit_ptr (logbuffer, load_addr);
2474 emit_uvalue (logbuffer, offset);
2475 emit_uvalue (logbuffer, size);
2476 memcpy (logbuffer->cursor, filename, len);
2477 logbuffer->cursor += len;
2479 EXIT_LOG_EXPLICIT (DO_SEND);
2484 dump_usym (MonoProfiler *prof, const char *name, uintptr_t value, uintptr_t size)
2486 int len = strlen (name) + 1;
2488 ENTER_LOG (&sample_usyms_ctr, logbuffer,
2489 EVENT_SIZE /* event */ +
2490 LEB128_SIZE /* value */ +
2491 LEB128_SIZE /* size */ +
2495 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_USYM);
2496 emit_ptr (logbuffer, (void*)value);
2497 emit_value (logbuffer, size);
2498 memcpy (logbuffer->cursor, name, len);
2499 logbuffer->cursor += len;
2501 EXIT_LOG_EXPLICIT (DO_SEND);
2504 /* ELF code crashes on some systems. */
2505 //#if defined(ELFMAG0)
2508 #if SIZEOF_VOID_P == 4
2509 #define ELF_WSIZE 32
2511 #define ELF_WSIZE 64
2514 #define ElfW(type) _ElfW (Elf, ELF_WSIZE, type)
2515 #define _ElfW(e,w,t) _ElfW_1 (e, w, _##t)
2516 #define _ElfW_1(e,w,t) e##w##t
2520 dump_elf_symbols (MonoProfiler *prof, ElfW(Sym) *symbols, int num_symbols, const char *strtab, void *load_addr)
2523 for (i = 0; i < num_symbols; ++i) {
2525 sym = strtab + symbols [i].st_name;
2526 if (!symbols [i].st_name || !symbols [i].st_size || (symbols [i].st_info & 0xf) != STT_FUNC)
2528 //printf ("symbol %s at %d\n", sym, symbols [i].st_value);
2529 dump_usym (sym, (uintptr_t)load_addr + symbols [i].st_value, symbols [i].st_size);
2534 read_elf_symbols (MonoProfiler *prof, const char *filename, void *load_addr)
2541 ElfW(Shdr) *sheader;
2542 ElfW(Shdr) *shstrtabh;
2543 ElfW(Shdr) *symtabh = NULL;
2544 ElfW(Shdr) *strtabh = NULL;
2545 ElfW(Sym) *symbols = NULL;
2549 fd = open (filename, O_RDONLY);
2552 if (fstat (fd, &statb) != 0) {
2556 file_size = statb.st_size;
2557 data = mmap (NULL, file_size, PROT_READ, MAP_PRIVATE, fd, 0);
2559 if (data == MAP_FAILED)
2562 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2563 header->e_ident [EI_MAG1] != ELFMAG1 ||
2564 header->e_ident [EI_MAG2] != ELFMAG2 ||
2565 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2566 munmap (data, file_size);
2569 sheader = (void*)((char*)data + header->e_shoff);
2570 shstrtabh = (void*)((char*)sheader + (header->e_shentsize * header->e_shstrndx));
2571 strtab = (const char*)data + shstrtabh->sh_offset;
2572 for (i = 0; i < header->e_shnum; ++i) {
2573 //printf ("section header: %d\n", sheader->sh_type);
2574 if (sheader->sh_type == SHT_SYMTAB) {
2576 strtabh = (void*)((char*)data + header->e_shoff + sheader->sh_link * header->e_shentsize);
2577 /*printf ("symtab section header: %d, .strstr: %d\n", i, sheader->sh_link);*/
2580 sheader = (void*)((char*)sheader + header->e_shentsize);
2582 if (!symtabh || !strtabh) {
2583 munmap (data, file_size);
2586 strtab = (const char*)data + strtabh->sh_offset;
2587 num_symbols = symtabh->sh_size / symtabh->sh_entsize;
2588 symbols = (void*)((char*)data + symtabh->sh_offset);
2589 dump_elf_symbols (symbols, num_symbols, strtab, load_addr);
2590 munmap (data, file_size);
2595 /* ELF code crashes on some systems. */
2596 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2599 elf_dl_callback (struct dl_phdr_info *info, size_t size, void *data)
2601 MonoProfiler *prof = data;
2603 const char *filename;
2605 char *a = (void*)info->dlpi_addr;
2607 ElfW(Dyn) *dyn = NULL;
2608 ElfW(Sym) *symtab = NULL;
2609 ElfW(Word) *hash_table = NULL;
2610 ElfW(Ehdr) *header = NULL;
2611 const char* strtab = NULL;
2612 for (obj = prof->binary_objects; obj; obj = obj->next) {
2616 filename = info->dlpi_name;
2619 if (!info->dlpi_addr && !filename [0]) {
2620 int l = readlink ("/proc/self/exe", buf, sizeof (buf) - 1);
2626 obj = g_calloc (sizeof (BinaryObject), 1);
2627 obj->addr = (void*)info->dlpi_addr;
2628 obj->name = pstrdup (filename);
2629 obj->next = prof->binary_objects;
2630 prof->binary_objects = obj;
2631 //printf ("loaded file: %s at %p, segments: %d\n", filename, (void*)info->dlpi_addr, info->dlpi_phnum);
2633 for (i = 0; i < info->dlpi_phnum; ++i) {
2634 //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);
2635 if (info->dlpi_phdr[i].p_type == PT_LOAD && !header) {
2636 header = (ElfW(Ehdr)*)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2637 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2638 header->e_ident [EI_MAG1] != ELFMAG1 ||
2639 header->e_ident [EI_MAG2] != ELFMAG2 ||
2640 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2643 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);
2644 } else if (info->dlpi_phdr[i].p_type == PT_DYNAMIC) {
2645 dyn = (ElfW(Dyn) *)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2648 if (read_elf_symbols (prof, filename, (void*)info->dlpi_addr))
2650 if (!info->dlpi_name || !info->dlpi_name[0])
2654 for (i = 0; dyn [i].d_tag != DT_NULL; ++i) {
2655 if (dyn [i].d_tag == DT_SYMTAB) {
2656 if (symtab && do_debug)
2657 printf ("multiple symtabs: %d\n", i);
2658 symtab = (ElfW(Sym) *)(a + dyn [i].d_un.d_ptr);
2659 } else if (dyn [i].d_tag == DT_HASH) {
2660 hash_table = (ElfW(Word) *)(a + dyn [i].d_un.d_ptr);
2661 } else if (dyn [i].d_tag == DT_STRTAB) {
2662 strtab = (const char*)(a + dyn [i].d_un.d_ptr);
2667 num_sym = hash_table [1];
2668 dump_elf_symbols (prof, symtab, num_sym, strtab, (void*)info->dlpi_addr);
2673 load_binaries (MonoProfiler *prof)
2675 dl_iterate_phdr (elf_dl_callback, prof);
2680 load_binaries (MonoProfiler *prof)
2687 symbol_for (uintptr_t code)
2690 void *ip = (void*)code;
2692 if (dladdr (ip, &di)) {
2694 return di.dli_sname;
2697 names = backtrace_symbols (&ip, 1);
2699 const char* p = names [0];
2710 dump_unmanaged_coderefs (MonoProfiler *prof)
2713 const char* last_symbol;
2714 uintptr_t addr, page_end;
2716 if (load_binaries (prof))
2718 for (i = 0; i < size_code_pages; ++i) {
2720 if (!code_pages [i] || code_pages [i] & 1)
2723 addr = CPAGE_ADDR (code_pages [i]);
2724 page_end = addr + CPAGE_SIZE;
2725 code_pages [i] |= 1;
2726 /* we dump the symbols for the whole page */
2727 for (; addr < page_end; addr += 16) {
2728 sym = symbol_for (addr);
2729 if (sym && sym == last_symbol)
2734 dump_usym (prof, sym, addr, 0); /* let's not guess the size */
2735 //printf ("found symbol at %p: %s\n", (void*)addr, sym);
2740 typedef struct MonoCounterAgent {
2741 MonoCounter *counter;
2742 // MonoCounterAgent specific data :
2747 struct MonoCounterAgent *next;
2750 static MonoCounterAgent* counters;
2751 static int counters_index = 1;
2752 static mono_mutex_t counters_mutex;
2755 counters_add_agent (MonoCounter *counter)
2757 if (InterlockedRead (&in_shutdown))
2760 MonoCounterAgent *agent, *item;
2762 mono_os_mutex_lock (&counters_mutex);
2764 for (agent = counters; agent; agent = agent->next) {
2765 if (agent->counter == counter) {
2766 agent->value_size = 0;
2768 g_free (agent->value);
2769 agent->value = NULL;
2775 agent = (MonoCounterAgent *) g_malloc (sizeof (MonoCounterAgent));
2776 agent->counter = counter;
2777 agent->value = NULL;
2778 agent->value_size = 0;
2779 agent->index = counters_index++;
2793 mono_os_mutex_unlock (&counters_mutex);
2797 counters_init_foreach_callback (MonoCounter *counter, gpointer data)
2799 counters_add_agent (counter);
2804 counters_init (MonoProfiler *profiler)
2806 mono_os_mutex_init (&counters_mutex);
2808 mono_counters_on_register (&counters_add_agent);
2809 mono_counters_foreach (counters_init_foreach_callback, NULL);
2813 counters_emit (MonoProfiler *profiler)
2815 MonoCounterAgent *agent;
2818 EVENT_SIZE /* event */ +
2819 LEB128_SIZE /* len */
2822 mono_os_mutex_lock (&counters_mutex);
2824 for (agent = counters; agent; agent = agent->next) {
2829 LEB128_SIZE /* section */ +
2830 strlen (mono_counter_get_name (agent->counter)) + 1 /* name */ +
2831 BYTE_SIZE /* type */ +
2832 BYTE_SIZE /* unit */ +
2833 BYTE_SIZE /* variance */ +
2834 LEB128_SIZE /* index */
2843 ENTER_LOG (&counter_descriptors_ctr, logbuffer, size);
2845 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
2846 emit_value (logbuffer, len);
2848 for (agent = counters; agent; agent = agent->next) {
2854 name = mono_counter_get_name (agent->counter);
2855 emit_value (logbuffer, mono_counter_get_section (agent->counter));
2856 emit_string (logbuffer, name, strlen (name) + 1);
2857 emit_byte (logbuffer, mono_counter_get_type (agent->counter));
2858 emit_byte (logbuffer, mono_counter_get_unit (agent->counter));
2859 emit_byte (logbuffer, mono_counter_get_variance (agent->counter));
2860 emit_value (logbuffer, agent->index);
2865 EXIT_LOG_EXPLICIT (DO_SEND);
2868 mono_os_mutex_unlock (&counters_mutex);
2872 counters_sample (MonoProfiler *profiler, uint64_t timestamp)
2874 MonoCounterAgent *agent;
2875 MonoCounter *counter;
2881 counters_emit (profiler);
2884 buffer = g_calloc (1, buffer_size);
2886 mono_os_mutex_lock (&counters_mutex);
2889 EVENT_SIZE /* event */
2892 for (agent = counters; agent; agent = agent->next) {
2894 LEB128_SIZE /* index */ +
2895 BYTE_SIZE /* type */ +
2896 mono_counter_get_size (agent->counter) /* value */
2901 LEB128_SIZE /* stop marker */
2904 ENTER_LOG (&counter_samples_ctr, logbuffer, size);
2906 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
2908 for (agent = counters; agent; agent = agent->next) {
2911 counter = agent->counter;
2913 size = mono_counter_get_size (counter);
2915 if (size > buffer_size) {
2917 buffer = g_realloc (buffer, buffer_size);
2920 memset (buffer, 0, buffer_size);
2922 g_assert (mono_counters_sample (counter, buffer, size));
2924 type = mono_counter_get_type (counter);
2926 if (!agent->value) {
2927 agent->value = g_calloc (1, size);
2928 agent->value_size = size;
2930 if (type == MONO_COUNTER_STRING) {
2931 if (strcmp (agent->value, buffer) == 0)
2934 if (agent->value_size == size && memcmp (agent->value, buffer, size) == 0)
2939 emit_uvalue (logbuffer, agent->index);
2940 emit_byte (logbuffer, type);
2942 case MONO_COUNTER_INT:
2943 #if SIZEOF_VOID_P == 4
2944 case MONO_COUNTER_WORD:
2946 emit_svalue (logbuffer, *(int*)buffer - *(int*)agent->value);
2948 case MONO_COUNTER_UINT:
2949 emit_uvalue (logbuffer, *(guint*)buffer - *(guint*)agent->value);
2951 case MONO_COUNTER_TIME_INTERVAL:
2952 case MONO_COUNTER_LONG:
2953 #if SIZEOF_VOID_P == 8
2954 case MONO_COUNTER_WORD:
2956 emit_svalue (logbuffer, *(gint64*)buffer - *(gint64*)agent->value);
2958 case MONO_COUNTER_ULONG:
2959 emit_uvalue (logbuffer, *(guint64*)buffer - *(guint64*)agent->value);
2961 case MONO_COUNTER_DOUBLE:
2962 emit_double (logbuffer, *(double*)buffer);
2964 case MONO_COUNTER_STRING:
2966 emit_byte (logbuffer, 0);
2968 emit_byte (logbuffer, 1);
2969 emit_string (logbuffer, (char*)buffer, size);
2973 g_assert_not_reached ();
2976 if (type == MONO_COUNTER_STRING && size > agent->value_size) {
2977 agent->value = g_realloc (agent->value, size);
2978 agent->value_size = size;
2982 memcpy (agent->value, buffer, size);
2986 emit_value (logbuffer, 0);
2988 EXIT_LOG_EXPLICIT (DO_SEND);
2990 mono_os_mutex_unlock (&counters_mutex);
2993 typedef struct _PerfCounterAgent PerfCounterAgent;
2994 struct _PerfCounterAgent {
2995 PerfCounterAgent *next;
2997 char *category_name;
3006 static PerfCounterAgent *perfcounters = NULL;
3009 perfcounters_emit (MonoProfiler *profiler)
3011 PerfCounterAgent *pcagent;
3014 EVENT_SIZE /* event */ +
3015 LEB128_SIZE /* len */
3018 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3019 if (pcagent->emitted)
3023 LEB128_SIZE /* section */ +
3024 strlen (pcagent->category_name) + 1 /* category name */ +
3025 strlen (pcagent->name) + 1 /* name */ +
3026 BYTE_SIZE /* type */ +
3027 BYTE_SIZE /* unit */ +
3028 BYTE_SIZE /* variance */ +
3029 LEB128_SIZE /* index */
3038 ENTER_LOG (&perfcounter_descriptors_ctr, logbuffer, size);
3040 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
3041 emit_value (logbuffer, len);
3043 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3044 if (pcagent->emitted)
3047 emit_value (logbuffer, MONO_COUNTER_PERFCOUNTERS);
3048 emit_string (logbuffer, pcagent->category_name, strlen (pcagent->category_name) + 1);
3049 emit_string (logbuffer, pcagent->name, strlen (pcagent->name) + 1);
3050 emit_byte (logbuffer, MONO_COUNTER_LONG);
3051 emit_byte (logbuffer, MONO_COUNTER_RAW);
3052 emit_byte (logbuffer, MONO_COUNTER_VARIABLE);
3053 emit_value (logbuffer, pcagent->index);
3055 pcagent->emitted = 1;
3058 EXIT_LOG_EXPLICIT (DO_SEND);
3062 perfcounters_foreach (char *category_name, char *name, unsigned char type, gint64 value, gpointer user_data)
3064 PerfCounterAgent *pcagent;
3066 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3067 if (strcmp (pcagent->category_name, category_name) != 0 || strcmp (pcagent->name, name) != 0)
3069 if (pcagent->value == value)
3072 pcagent->value = value;
3073 pcagent->updated = 1;
3074 pcagent->deleted = 0;
3078 pcagent = g_new0 (PerfCounterAgent, 1);
3079 pcagent->next = perfcounters;
3080 pcagent->index = counters_index++;
3081 pcagent->category_name = g_strdup (category_name);
3082 pcagent->name = g_strdup (name);
3083 pcagent->type = (int) type;
3084 pcagent->value = value;
3085 pcagent->emitted = 0;
3086 pcagent->updated = 1;
3087 pcagent->deleted = 0;
3089 perfcounters = pcagent;
3095 perfcounters_sample (MonoProfiler *profiler, uint64_t timestamp)
3097 PerfCounterAgent *pcagent;
3101 mono_os_mutex_lock (&counters_mutex);
3103 /* mark all perfcounters as deleted, foreach will unmark them as necessary */
3104 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next)
3105 pcagent->deleted = 1;
3107 mono_perfcounter_foreach (perfcounters_foreach, perfcounters);
3109 perfcounters_emit (profiler);
3112 EVENT_SIZE /* event */
3115 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3116 if (pcagent->deleted || !pcagent->updated)
3120 LEB128_SIZE /* index */ +
3121 BYTE_SIZE /* type */ +
3122 LEB128_SIZE /* value */
3132 LEB128_SIZE /* stop marker */
3135 ENTER_LOG (&perfcounter_samples_ctr, logbuffer, size);
3137 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
3139 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3140 if (pcagent->deleted || !pcagent->updated)
3142 emit_uvalue (logbuffer, pcagent->index);
3143 emit_byte (logbuffer, MONO_COUNTER_LONG);
3144 emit_svalue (logbuffer, pcagent->value);
3146 pcagent->updated = 0;
3149 emit_value (logbuffer, 0);
3151 EXIT_LOG_EXPLICIT (DO_SEND);
3154 mono_os_mutex_unlock (&counters_mutex);
3158 counters_and_perfcounters_sample (MonoProfiler *prof)
3160 uint64_t now = current_time ();
3162 counters_sample (prof, now);
3163 perfcounters_sample (prof, now);
3166 #define COVERAGE_DEBUG(x) if (debug_coverage) {x}
3167 static mono_mutex_t coverage_mutex;
3168 static MonoConcurrentHashTable *coverage_methods = NULL;
3169 static MonoConcurrentHashTable *coverage_assemblies = NULL;
3170 static MonoConcurrentHashTable *coverage_classes = NULL;
3172 static MonoConcurrentHashTable *filtered_classes = NULL;
3173 static MonoConcurrentHashTable *entered_methods = NULL;
3174 static MonoConcurrentHashTable *image_to_methods = NULL;
3175 static MonoConcurrentHashTable *suppressed_assemblies = NULL;
3176 static gboolean coverage_initialized = FALSE;
3178 static GPtrArray *coverage_data = NULL;
3179 static int previous_offset = 0;
3182 MonoLockFreeQueueNode node;
3195 free_coverage_entry (gpointer data, gpointer userdata)
3197 CoverageEntry *entry = (CoverageEntry *)data;
3198 g_free (entry->filename);
3203 obtain_coverage_for_method (MonoProfiler *prof, const MonoProfileCoverageEntry *entry)
3205 int offset = entry->iloffset - previous_offset;
3206 CoverageEntry *e = g_new (CoverageEntry, 1);
3208 previous_offset = entry->iloffset;
3211 e->counter = entry->counter;
3212 e->filename = g_strdup(entry->filename ? entry->filename : "");
3213 e->line = entry->line;
3214 e->column = entry->col;
3216 g_ptr_array_add (coverage_data, e);
3220 parse_generic_type_names(char *name)
3222 char *new_name, *ret;
3223 int within_generic_declaration = 0, generic_members = 1;
3225 if (name == NULL || *name == '\0')
3226 return g_strdup ("");
3228 if (!(ret = new_name = (char *) g_calloc (strlen (name) * 4 + 1, sizeof (char))))
3234 within_generic_declaration = 1;
3238 within_generic_declaration = 0;
3240 if (*(name - 1) != '<') {
3242 *new_name++ = '0' + generic_members;
3244 memcpy (new_name, "<>", 8);
3248 generic_members = 0;
3256 if (!within_generic_declaration)
3257 *new_name++ = *name;
3266 static int method_id;
3268 build_method_buffer (gpointer key, gpointer value, gpointer userdata)
3270 MonoMethod *method = (MonoMethod *)value;
3271 MonoProfiler *prof = (MonoProfiler *)userdata;
3275 const char *image_name, *method_name, *sig, *first_filename;
3278 previous_offset = 0;
3279 coverage_data = g_ptr_array_new ();
3281 mono_profiler_coverage_get (prof, method, obtain_coverage_for_method);
3283 klass = mono_method_get_class (method);
3284 image = mono_class_get_image (klass);
3285 image_name = mono_image_get_name (image);
3287 sig = mono_signature_get_desc (mono_method_signature (method), TRUE);
3288 class_name = parse_generic_type_names (mono_type_get_name (mono_class_get_type (klass)));
3289 method_name = mono_method_get_name (method);
3291 if (coverage_data->len != 0) {
3292 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[0];
3293 first_filename = entry->filename ? entry->filename : "";
3295 first_filename = "";
3297 image_name = image_name ? image_name : "";
3298 sig = sig ? sig : "";
3299 method_name = method_name ? method_name : "";
3301 ENTER_LOG (&coverage_methods_ctr, logbuffer,
3302 EVENT_SIZE /* event */ +
3303 strlen (image_name) + 1 /* image name */ +
3304 strlen (class_name) + 1 /* class name */ +
3305 strlen (method_name) + 1 /* method name */ +
3306 strlen (sig) + 1 /* signature */ +
3307 strlen (first_filename) + 1 /* first file name */ +
3308 LEB128_SIZE /* token */ +
3309 LEB128_SIZE /* method id */ +
3310 LEB128_SIZE /* entries */
3313 emit_event (logbuffer, TYPE_COVERAGE_METHOD | TYPE_COVERAGE);
3314 emit_string (logbuffer, image_name, strlen (image_name) + 1);
3315 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3316 emit_string (logbuffer, method_name, strlen (method_name) + 1);
3317 emit_string (logbuffer, sig, strlen (sig) + 1);
3318 emit_string (logbuffer, first_filename, strlen (first_filename) + 1);
3320 emit_uvalue (logbuffer, mono_method_get_token (method));
3321 emit_uvalue (logbuffer, method_id);
3322 emit_value (logbuffer, coverage_data->len);
3324 EXIT_LOG_EXPLICIT (DO_SEND);
3326 for (i = 0; i < coverage_data->len; i++) {
3327 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[i];
3329 ENTER_LOG (&coverage_statements_ctr, logbuffer,
3330 EVENT_SIZE /* event */ +
3331 LEB128_SIZE /* method id */ +
3332 LEB128_SIZE /* offset */ +
3333 LEB128_SIZE /* counter */ +
3334 LEB128_SIZE /* line */ +
3335 LEB128_SIZE /* column */
3338 emit_event (logbuffer, TYPE_COVERAGE_STATEMENT | TYPE_COVERAGE);
3339 emit_uvalue (logbuffer, method_id);
3340 emit_uvalue (logbuffer, entry->offset);
3341 emit_uvalue (logbuffer, entry->counter);
3342 emit_uvalue (logbuffer, entry->line);
3343 emit_uvalue (logbuffer, entry->column);
3345 EXIT_LOG_EXPLICIT (DO_SEND);
3350 g_free (class_name);
3352 g_ptr_array_foreach (coverage_data, free_coverage_entry, NULL);
3353 g_ptr_array_free (coverage_data, TRUE);
3354 coverage_data = NULL;
3357 /* This empties the queue */
3359 count_queue (MonoLockFreeQueue *queue)
3361 MonoLockFreeQueueNode *node;
3364 while ((node = mono_lock_free_queue_dequeue (queue))) {
3366 mono_thread_hazardous_try_free (node, g_free);
3373 build_class_buffer (gpointer key, gpointer value, gpointer userdata)
3375 MonoClass *klass = (MonoClass *)key;
3376 MonoLockFreeQueue *class_methods = (MonoLockFreeQueue *)value;
3379 const char *assembly_name;
3380 int number_of_methods, partially_covered;
3381 guint fully_covered;
3383 image = mono_class_get_image (klass);
3384 assembly_name = mono_image_get_name (image);
3385 class_name = mono_type_get_name (mono_class_get_type (klass));
3387 assembly_name = assembly_name ? assembly_name : "";
3388 number_of_methods = mono_class_num_methods (klass);
3389 fully_covered = count_queue (class_methods);
3390 /* We don't handle partial covered yet */
3391 partially_covered = 0;
3393 ENTER_LOG (&coverage_classes_ctr, logbuffer,
3394 EVENT_SIZE /* event */ +
3395 strlen (assembly_name) + 1 /* assembly name */ +
3396 strlen (class_name) + 1 /* class name */ +
3397 LEB128_SIZE /* no. methods */ +
3398 LEB128_SIZE /* fully covered */ +
3399 LEB128_SIZE /* partially covered */
3402 emit_event (logbuffer, TYPE_COVERAGE_CLASS | TYPE_COVERAGE);
3403 emit_string (logbuffer, assembly_name, strlen (assembly_name) + 1);
3404 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3405 emit_uvalue (logbuffer, number_of_methods);
3406 emit_uvalue (logbuffer, fully_covered);
3407 emit_uvalue (logbuffer, partially_covered);
3409 EXIT_LOG_EXPLICIT (DO_SEND);
3411 g_free (class_name);
3415 get_coverage_for_image (MonoImage *image, int *number_of_methods, guint *fully_covered, int *partially_covered)
3417 MonoLockFreeQueue *image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3419 *number_of_methods = mono_image_get_table_rows (image, MONO_TABLE_METHOD);
3421 *fully_covered = count_queue (image_methods);
3425 // FIXME: We don't handle partially covered yet.
3426 *partially_covered = 0;
3430 build_assembly_buffer (gpointer key, gpointer value, gpointer userdata)
3432 MonoAssembly *assembly = (MonoAssembly *)value;
3433 MonoImage *image = mono_assembly_get_image (assembly);
3434 const char *name, *guid, *filename;
3435 int number_of_methods = 0, partially_covered = 0;
3436 guint fully_covered = 0;
3438 name = mono_image_get_name (image);
3439 guid = mono_image_get_guid (image);
3440 filename = mono_image_get_filename (image);
3442 name = name ? name : "";
3443 guid = guid ? guid : "";
3444 filename = filename ? filename : "";
3446 get_coverage_for_image (image, &number_of_methods, &fully_covered, &partially_covered);
3448 ENTER_LOG (&coverage_assemblies_ctr, logbuffer,
3449 EVENT_SIZE /* event */ +
3450 strlen (name) + 1 /* name */ +
3451 strlen (guid) + 1 /* guid */ +
3452 strlen (filename) + 1 /* file name */ +
3453 LEB128_SIZE /* no. methods */ +
3454 LEB128_SIZE /* fully covered */ +
3455 LEB128_SIZE /* partially covered */
3458 emit_event (logbuffer, TYPE_COVERAGE_ASSEMBLY | TYPE_COVERAGE);
3459 emit_string (logbuffer, name, strlen (name) + 1);
3460 emit_string (logbuffer, guid, strlen (guid) + 1);
3461 emit_string (logbuffer, filename, strlen (filename) + 1);
3462 emit_uvalue (logbuffer, number_of_methods);
3463 emit_uvalue (logbuffer, fully_covered);
3464 emit_uvalue (logbuffer, partially_covered);
3466 EXIT_LOG_EXPLICIT (DO_SEND);
3470 dump_coverage (MonoProfiler *prof)
3472 if (!coverage_initialized)
3475 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Started dump\n");)
3478 mono_os_mutex_lock (&coverage_mutex);
3479 mono_conc_hashtable_foreach (coverage_assemblies, build_assembly_buffer, NULL);
3480 mono_conc_hashtable_foreach (coverage_classes, build_class_buffer, NULL);
3481 mono_conc_hashtable_foreach (coverage_methods, build_method_buffer, prof);
3482 mono_os_mutex_unlock (&coverage_mutex);
3484 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Finished dump\n");)
3488 process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method)
3493 if (!coverage_initialized)
3496 klass = mono_method_get_class (method);
3497 image = mono_class_get_image (klass);
3499 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)))
3502 mono_os_mutex_lock (&coverage_mutex);
3503 mono_conc_hashtable_insert (entered_methods, method, method);
3504 mono_os_mutex_unlock (&coverage_mutex);
3507 static MonoLockFreeQueueNode *
3508 create_method_node (MonoMethod *method)
3510 MethodNode *node = (MethodNode *) g_malloc (sizeof (MethodNode));
3511 mono_lock_free_queue_node_init ((MonoLockFreeQueueNode *) node, FALSE);
3512 node->method = method;
3514 return (MonoLockFreeQueueNode *) node;
3518 coverage_filter (MonoProfiler *prof, MonoMethod *method)
3523 MonoAssembly *assembly;
3524 MonoMethodHeader *header;
3525 guint32 iflags, flags, code_size;
3526 char *fqn, *classname;
3527 gboolean has_positive, found;
3528 MonoLockFreeQueue *image_methods, *class_methods;
3529 MonoLockFreeQueueNode *node;
3531 g_assert (coverage_initialized && "Why are we being asked for coverage filter info when we're not doing coverage?");
3533 COVERAGE_DEBUG(fprintf (stderr, "Coverage filter for %s\n", mono_method_get_name (method));)
3535 flags = mono_method_get_flags (method, &iflags);
3536 if ((iflags & 0x1000 /*METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL*/) ||
3537 (flags & 0x2000 /*METHOD_ATTRIBUTE_PINVOKE_IMPL*/)) {
3538 COVERAGE_DEBUG(fprintf (stderr, " Internal call or pinvoke - ignoring\n");)
3542 // Don't need to do anything else if we're already tracking this method
3543 if (mono_conc_hashtable_lookup (coverage_methods, method)) {
3544 COVERAGE_DEBUG(fprintf (stderr, " Already tracking\n");)
3548 klass = mono_method_get_class (method);
3549 image = mono_class_get_image (klass);
3551 // Don't handle coverage for the core assemblies
3552 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)) != NULL)
3555 if (prof->coverage_filters) {
3556 /* Check already filtered classes first */
3557 if (mono_conc_hashtable_lookup (filtered_classes, klass)) {
3558 COVERAGE_DEBUG(fprintf (stderr, " Already filtered\n");)
3562 classname = mono_type_get_name (mono_class_get_type (klass));
3564 fqn = g_strdup_printf ("[%s]%s", mono_image_get_name (image), classname);
3566 COVERAGE_DEBUG(fprintf (stderr, " Looking for %s in filter\n", fqn);)
3567 // Check positive filters first
3568 has_positive = FALSE;
3570 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3571 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3573 if (filter [0] == '+') {
3574 filter = &filter [1];
3576 COVERAGE_DEBUG(fprintf (stderr, " Checking against +%s ...", filter);)
3578 if (strstr (fqn, filter) != NULL) {
3579 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3582 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3584 has_positive = TRUE;
3588 if (has_positive && !found) {
3589 COVERAGE_DEBUG(fprintf (stderr, " Positive match was not found\n");)
3591 mono_os_mutex_lock (&coverage_mutex);
3592 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3593 mono_os_mutex_unlock (&coverage_mutex);
3600 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3601 // FIXME: Is substring search sufficient?
3602 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3603 if (filter [0] == '+')
3607 filter = &filter [1];
3608 COVERAGE_DEBUG(fprintf (stderr, " Checking against -%s ...", filter);)
3610 if (strstr (fqn, filter) != NULL) {
3611 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3613 mono_os_mutex_lock (&coverage_mutex);
3614 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3615 mono_os_mutex_unlock (&coverage_mutex);
3621 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3629 COVERAGE_DEBUG(fprintf (stderr, " Handling coverage for %s\n", mono_method_get_name (method));)
3630 header = mono_method_get_header_checked (method, &error);
3631 mono_error_cleanup (&error);
3633 mono_method_header_get_code (header, &code_size, NULL);
3635 assembly = mono_image_get_assembly (image);
3637 // Need to keep the assemblies around for as long as they are kept in the hashtable
3638 // Nunit, for example, has a habit of unloading them before the coverage statistics are
3639 // generated causing a crash. See https://bugzilla.xamarin.com/show_bug.cgi?id=39325
3640 mono_assembly_addref (assembly);
3642 mono_os_mutex_lock (&coverage_mutex);
3643 mono_conc_hashtable_insert (coverage_methods, method, method);
3644 mono_conc_hashtable_insert (coverage_assemblies, assembly, assembly);
3645 mono_os_mutex_unlock (&coverage_mutex);
3647 image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3649 if (image_methods == NULL) {
3650 image_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3651 mono_lock_free_queue_init (image_methods);
3652 mono_os_mutex_lock (&coverage_mutex);
3653 mono_conc_hashtable_insert (image_to_methods, image, image_methods);
3654 mono_os_mutex_unlock (&coverage_mutex);
3657 node = create_method_node (method);
3658 mono_lock_free_queue_enqueue (image_methods, node);
3660 class_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (coverage_classes, klass);
3662 if (class_methods == NULL) {
3663 class_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3664 mono_lock_free_queue_init (class_methods);
3665 mono_os_mutex_lock (&coverage_mutex);
3666 mono_conc_hashtable_insert (coverage_classes, klass, class_methods);
3667 mono_os_mutex_unlock (&coverage_mutex);
3670 node = create_method_node (method);
3671 mono_lock_free_queue_enqueue (class_methods, node);
3676 #define LINE_BUFFER_SIZE 4096
3677 /* Max file limit of 128KB */
3678 #define MAX_FILE_SIZE 128 * 1024
3680 get_file_content (FILE *stream)
3685 int res, offset = 0;
3687 res = fseek (stream, 0, SEEK_END);
3691 filesize = ftell (stream);
3695 res = fseek (stream, 0, SEEK_SET);
3699 if (filesize > MAX_FILE_SIZE)
3702 buffer = (char *) g_malloc ((filesize + 1) * sizeof (char));
3703 while ((bytes_read = fread (buffer + offset, 1, LINE_BUFFER_SIZE, stream)) > 0)
3704 offset += bytes_read;
3706 /* NULL terminate our buffer */
3707 buffer[filesize] = '\0';
3712 get_next_line (char *contents, char **next_start)
3716 if (p == NULL || *p == '\0') {
3721 while (*p != '\n' && *p != '\0')
3726 *next_start = p + 1;
3734 init_suppressed_assemblies (void)
3740 suppressed_assemblies = mono_conc_hashtable_new (g_str_hash, g_str_equal);
3741 sa_file = fopen (SUPPRESSION_DIR "/mono-profiler-log.suppression", "r");
3742 if (sa_file == NULL)
3745 /* Don't need to free @content as it is referred to by the lines stored in @suppressed_assemblies */
3746 content = get_file_content (sa_file);
3747 if (content == NULL) {
3748 g_error ("mono-profiler-log.suppression is greater than 128kb - aborting\n");
3751 while ((line = get_next_line (content, &content))) {
3752 line = g_strchomp (g_strchug (line));
3753 /* No locking needed as we're doing initialization */
3754 mono_conc_hashtable_insert (suppressed_assemblies, line, line);
3761 parse_cov_filter_file (GPtrArray *filters, const char *file)
3764 char *line, *content;
3766 filter_file = fopen (file, "r");
3767 if (filter_file == NULL) {
3768 fprintf (stderr, "Unable to open %s\n", file);
3772 /* Don't need to free content as it is referred to by the lines stored in @filters */
3773 content = get_file_content (filter_file);
3774 if (content == NULL)
3775 fprintf (stderr, "WARNING: %s is greater than 128kb - ignoring\n", file);
3777 while ((line = get_next_line (content, &content)))
3778 g_ptr_array_add (filters, g_strchug (g_strchomp (line)));
3780 fclose (filter_file);
3784 coverage_init (MonoProfiler *prof)
3786 g_assert (!coverage_initialized && "Why are we initializing coverage twice?");
3788 COVERAGE_DEBUG(fprintf (stderr, "Coverage initialized\n");)
3790 mono_os_mutex_init (&coverage_mutex);
3791 coverage_methods = mono_conc_hashtable_new (NULL, NULL);
3792 coverage_assemblies = mono_conc_hashtable_new (NULL, NULL);
3793 coverage_classes = mono_conc_hashtable_new (NULL, NULL);
3794 filtered_classes = mono_conc_hashtable_new (NULL, NULL);
3795 entered_methods = mono_conc_hashtable_new (NULL, NULL);
3796 image_to_methods = mono_conc_hashtable_new (NULL, NULL);
3797 init_suppressed_assemblies ();
3799 coverage_initialized = TRUE;
3803 unref_coverage_assemblies (gpointer key, gpointer value, gpointer userdata)
3805 MonoAssembly *assembly = (MonoAssembly *)value;
3806 mono_assembly_close (assembly);
3810 free_sample_hit (gpointer p)
3812 mono_lock_free_free (p, SAMPLE_BLOCK_SIZE);
3816 cleanup_reusable_samples (MonoProfiler *prof)
3820 while ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->sample_reuse_queue)))
3821 mono_thread_hazardous_try_free (sample, free_sample_hit);
3825 log_shutdown (MonoProfiler *prof)
3827 InterlockedWrite (&in_shutdown, 1);
3830 counters_and_perfcounters_sample (prof);
3832 dump_coverage (prof);
3836 if (write (prof->pipes [1], &c, 1) != 1) {
3837 fprintf (stderr, "Could not write to pipe: %s\n", strerror (errno));
3841 mono_native_thread_join (prof->helper_thread);
3843 mono_os_mutex_destroy (&counters_mutex);
3845 MonoCounterAgent *mc_next;
3847 for (MonoCounterAgent *cur = counters; cur; cur = mc_next) {
3848 mc_next = cur->next;
3852 PerfCounterAgent *pc_next;
3854 for (PerfCounterAgent *cur = perfcounters; cur; cur = pc_next) {
3855 pc_next = cur->next;
3860 * Ensure that we empty the LLS completely, even if some nodes are
3861 * not immediately removed upon calling mono_lls_remove (), by
3862 * iterating until the head is NULL.
3864 while (profiler_thread_list.head) {
3865 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
3866 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
3868 remove_thread (thread);
3869 } MONO_LLS_FOREACH_SAFE_END
3873 * Ensure that all threads have been freed, so that we don't miss any
3874 * buffers when we shut down the writer thread below.
3876 mono_thread_hazardous_try_free_all ();
3878 InterlockedWrite (&prof->run_dumper_thread, 0);
3879 mono_os_sem_post (&prof->dumper_queue_sem);
3880 mono_native_thread_join (prof->dumper_thread);
3881 mono_os_sem_destroy (&prof->dumper_queue_sem);
3883 InterlockedWrite (&prof->run_writer_thread, 0);
3884 mono_os_sem_post (&prof->writer_queue_sem);
3885 mono_native_thread_join (prof->writer_thread);
3886 mono_os_sem_destroy (&prof->writer_queue_sem);
3889 * Free all writer queue entries, and ensure that all sample hits will be
3890 * added to the sample reuse queue.
3892 mono_thread_hazardous_try_free_all ();
3894 cleanup_reusable_samples (prof);
3897 * Finally, make sure that all sample hits are freed. This should cover all
3898 * hazardous data from the profiler. We can now be sure that the runtime
3899 * won't later invoke free functions in the profiler library after it has
3902 mono_thread_hazardous_try_free_all ();
3904 g_assert (!InterlockedRead (&buffer_rwlock_count) && "Why is the reader count still non-zero?");
3905 g_assert (!InterlockedReadPointer (&buffer_rwlock_exclusive) && "Why does someone still hold the exclusive lock?");
3907 #if defined (HAVE_SYS_ZLIB)
3909 gzclose (prof->gzfile);
3911 if (prof->pipe_output)
3912 pclose (prof->file);
3914 fclose (prof->file);
3916 mono_conc_hashtable_destroy (prof->method_table);
3917 mono_os_mutex_destroy (&prof->method_table_mutex);
3919 if (coverage_initialized) {
3920 mono_os_mutex_lock (&coverage_mutex);
3921 mono_conc_hashtable_foreach (coverage_assemblies, unref_coverage_assemblies, prof);
3922 mono_os_mutex_unlock (&coverage_mutex);
3924 mono_conc_hashtable_destroy (coverage_methods);
3925 mono_conc_hashtable_destroy (coverage_assemblies);
3926 mono_conc_hashtable_destroy (coverage_classes);
3927 mono_conc_hashtable_destroy (filtered_classes);
3929 mono_conc_hashtable_destroy (entered_methods);
3930 mono_conc_hashtable_destroy (image_to_methods);
3931 mono_conc_hashtable_destroy (suppressed_assemblies);
3932 mono_os_mutex_destroy (&coverage_mutex);
3937 g_free (prof->args);
3942 new_filename (const char* filename)
3944 time_t t = time (NULL);
3945 int pid = process_id ();
3950 int count_dates = 0;
3954 for (p = filename; *p; p++) {
3965 if (!count_dates && !count_pids)
3966 return pstrdup (filename);
3967 snprintf (pid_buf, sizeof (pid_buf), "%d", pid);
3969 snprintf (time_buf, sizeof (time_buf), "%d%02d%02d%02d%02d%02d",
3970 1900 + ts->tm_year, 1 + ts->tm_mon, ts->tm_mday, ts->tm_hour, ts->tm_min, ts->tm_sec);
3971 s_date = strlen (time_buf);
3972 s_pid = strlen (pid_buf);
3973 d = res = (char *) g_malloc (strlen (filename) + s_date * count_dates + s_pid * count_pids);
3974 for (p = filename; *p; p++) {
3981 strcpy (d, time_buf);
3984 } else if (*p == 'p') {
3985 strcpy (d, pid_buf);
3988 } else if (*p == '%') {
4001 add_to_fd_set (fd_set *set, int fd, int *max_fd)
4004 * This should only trigger for the basic FDs (server socket, pipes) at
4005 * startup if for some mysterious reason they're too large. In this case,
4006 * the profiler really can't function, and we're better off printing an
4007 * error and exiting.
4009 if (fd >= FD_SETSIZE) {
4010 fprintf (stderr, "File descriptor is out of bounds for fd_set: %d\n", fd);
4021 helper_thread (void *arg)
4023 MonoProfiler *prof = (MonoProfiler *) arg;
4025 mono_threads_attach_tools_thread ();
4026 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler helper");
4028 MonoProfilerThread *thread = init_thread (prof, FALSE);
4030 GArray *command_sockets = g_array_new (FALSE, FALSE, sizeof (int));
4038 add_to_fd_set (&rfds, prof->server_socket, &max_fd);
4039 add_to_fd_set (&rfds, prof->pipes [0], &max_fd);
4041 for (gint i = 0; i < command_sockets->len; i++)
4042 add_to_fd_set (&rfds, g_array_index (command_sockets, int, i), &max_fd);
4044 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
4046 // Sleep for 1sec or until a file descriptor has data.
4047 if (select (max_fd + 1, &rfds, NULL, NULL, &tv) == -1) {
4051 fprintf (stderr, "Error in mono-profiler-log server: %s", strerror (errno));
4056 counters_and_perfcounters_sample (prof);
4058 buffer_lock_excl ();
4060 sync_point (SYNC_POINT_PERIODIC);
4062 buffer_unlock_excl ();
4064 // Are we shutting down?
4065 if (FD_ISSET (prof->pipes [0], &rfds)) {
4067 read (prof->pipes [0], &c, 1);
4071 for (gint i = 0; i < command_sockets->len; i++) {
4072 int fd = g_array_index (command_sockets, int, i);
4074 if (!FD_ISSET (fd, &rfds))
4078 int len = read (fd, buf, sizeof (buf) - 1);
4084 // The other end disconnected.
4085 g_array_remove_index (command_sockets, i);
4093 if (!strcmp (buf, "heapshot\n") && hs_mode_ondemand) {
4094 // Rely on the finalization callback triggering a GC.
4095 heapshot_requested = 1;
4096 mono_gc_finalize_notify ();
4100 if (FD_ISSET (prof->server_socket, &rfds)) {
4101 int fd = accept (prof->server_socket, NULL, NULL);
4104 if (fd >= FD_SETSIZE)
4107 g_array_append_val (command_sockets, fd);
4112 for (gint i = 0; i < command_sockets->len; i++)
4113 close (g_array_index (command_sockets, int, i));
4115 g_array_free (command_sockets, TRUE);
4117 send_log_unsafe (FALSE);
4118 deinit_thread (thread);
4120 mono_thread_info_detach ();
4126 start_helper_thread (MonoProfiler* prof)
4128 if (pipe (prof->pipes) == -1) {
4129 fprintf (stderr, "Cannot create pipe: %s\n", strerror (errno));
4133 prof->server_socket = socket (PF_INET, SOCK_STREAM, 0);
4135 if (prof->server_socket == -1) {
4136 fprintf (stderr, "Cannot create server socket: %s\n", strerror (errno));
4140 struct sockaddr_in server_address;
4142 memset (&server_address, 0, sizeof (server_address));
4143 server_address.sin_family = AF_INET;
4144 server_address.sin_addr.s_addr = INADDR_ANY;
4145 server_address.sin_port = htons (prof->command_port);
4147 if (bind (prof->server_socket, (struct sockaddr *) &server_address, sizeof (server_address)) == -1) {
4148 fprintf (stderr, "Cannot bind server socket on port %d: %s\n", prof->command_port, strerror (errno));
4149 close (prof->server_socket);
4153 if (listen (prof->server_socket, 1) == -1) {
4154 fprintf (stderr, "Cannot listen on server socket: %s\n", strerror (errno));
4155 close (prof->server_socket);
4159 socklen_t slen = sizeof (server_address);
4161 if (getsockname (prof->server_socket, (struct sockaddr *) &server_address, &slen)) {
4162 fprintf (stderr, "Could not get assigned port: %s\n", strerror (errno));
4163 close (prof->server_socket);
4167 prof->command_port = ntohs (server_address.sin_port);
4169 if (!mono_native_thread_create (&prof->helper_thread, helper_thread, prof)) {
4170 fprintf (stderr, "Could not start helper thread\n");
4171 close (prof->server_socket);
4177 free_writer_entry (gpointer p)
4179 mono_lock_free_free (p, WRITER_ENTRY_BLOCK_SIZE);
4183 handle_writer_queue_entry (MonoProfiler *prof)
4185 WriterQueueEntry *entry;
4187 if ((entry = (WriterQueueEntry *) mono_lock_free_queue_dequeue (&prof->writer_queue))) {
4188 if (!entry->methods)
4191 gboolean wrote_methods = FALSE;
4194 * Encode the method events in a temporary log buffer that we
4195 * flush to disk before the main buffer, ensuring that all
4196 * methods have metadata emitted before they're referenced.
4198 * We use a 'proper' thread-local buffer for this as opposed
4199 * to allocating and freeing a buffer by hand because the call
4200 * to mono_method_full_name () below may trigger class load
4201 * events when it retrieves the signature of the method. So a
4202 * thread-local buffer needs to exist when such events occur.
4204 for (guint i = 0; i < entry->methods->len; i++) {
4205 MethodInfo *info = (MethodInfo *) g_ptr_array_index (entry->methods, i);
4207 if (mono_conc_hashtable_lookup (prof->method_table, info->method))
4208 goto free_info; // This method already has metadata emitted.
4211 * Other threads use this hash table to get a general
4212 * idea of whether a method has already been emitted to
4213 * the stream. Due to the way we add to this table, it
4214 * can easily happen that multiple threads queue up the
4215 * same methods, but that's OK since eventually all
4216 * methods will be in this table and the thread-local
4217 * method lists will just be empty for the rest of the
4220 mono_os_mutex_lock (&prof->method_table_mutex);
4221 mono_conc_hashtable_insert (prof->method_table, info->method, info->method);
4222 mono_os_mutex_unlock (&prof->method_table_mutex);
4224 char *name = mono_method_full_name (info->method, 1);
4225 int nlen = strlen (name) + 1;
4226 void *cstart = info->ji ? mono_jit_info_get_code_start (info->ji) : NULL;
4227 int csize = info->ji ? mono_jit_info_get_code_size (info->ji) : 0;
4229 ENTER_LOG (&method_jits_ctr, logbuffer,
4230 EVENT_SIZE /* event */ +
4231 LEB128_SIZE /* method */ +
4232 LEB128_SIZE /* start */ +
4233 LEB128_SIZE /* size */ +
4237 emit_event_time (logbuffer, TYPE_JIT | TYPE_METHOD, info->time);
4238 emit_method_inner (logbuffer, info->method);
4239 emit_ptr (logbuffer, cstart);
4240 emit_value (logbuffer, csize);
4242 memcpy (logbuffer->cursor, name, nlen);
4243 logbuffer->cursor += nlen;
4245 EXIT_LOG_EXPLICIT (NO_SEND);
4249 wrote_methods = TRUE;
4255 g_ptr_array_free (entry->methods, TRUE);
4257 if (wrote_methods) {
4258 dump_buffer_threadless (prof, PROF_TLS_GET ()->buffer);
4259 init_buffer_state (PROF_TLS_GET ());
4263 dump_buffer (prof, entry->buffer);
4265 mono_thread_hazardous_try_free (entry, free_writer_entry);
4274 writer_thread (void *arg)
4276 MonoProfiler *prof = (MonoProfiler *)arg;
4278 mono_threads_attach_tools_thread ();
4279 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler writer");
4283 MonoProfilerThread *thread = init_thread (prof, FALSE);
4285 while (InterlockedRead (&prof->run_writer_thread)) {
4286 mono_os_sem_wait (&prof->writer_queue_sem, MONO_SEM_FLAGS_NONE);
4287 handle_writer_queue_entry (prof);
4290 /* Drain any remaining entries on shutdown. */
4291 while (handle_writer_queue_entry (prof));
4293 free_buffer (thread->buffer, thread->buffer->size);
4294 deinit_thread (thread);
4296 mono_thread_info_detach ();
4302 start_writer_thread (MonoProfiler* prof)
4304 InterlockedWrite (&prof->run_writer_thread, 1);
4306 if (!mono_native_thread_create (&prof->writer_thread, writer_thread, prof)) {
4307 fprintf (stderr, "Could not start writer thread\n");
4313 reuse_sample_hit (gpointer p)
4315 SampleHit *sample = p;
4317 mono_lock_free_queue_node_unpoison (&sample->node);
4318 mono_lock_free_queue_enqueue (&sample->prof->sample_reuse_queue, &sample->node);
4322 handle_dumper_queue_entry (MonoProfiler *prof)
4326 if ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->dumper_queue))) {
4327 for (int i = 0; i < sample->count; ++i) {
4328 MonoMethod *method = sample->frames [i].method;
4329 MonoDomain *domain = sample->frames [i].domain;
4330 void *address = sample->frames [i].base_address;
4333 g_assert (domain && "What happened to the domain pointer?");
4334 g_assert (address && "What happened to the instruction pointer?");
4336 MonoJitInfo *ji = mono_jit_info_table_find (domain, (char *) address);
4339 sample->frames [i].method = mono_jit_info_get_method (ji);
4343 ENTER_LOG (&sample_hits_ctr, logbuffer,
4344 EVENT_SIZE /* event */ +
4345 BYTE_SIZE /* type */ +
4346 LEB128_SIZE /* tid */ +
4347 LEB128_SIZE /* count */ +
4349 LEB128_SIZE /* ip */
4351 LEB128_SIZE /* managed count */ +
4353 LEB128_SIZE /* method */
4357 emit_event_time (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_HIT, sample->time);
4358 emit_byte (logbuffer, SAMPLE_CYCLES);
4359 emit_ptr (logbuffer, (void *) sample->tid);
4360 emit_value (logbuffer, 1);
4362 // TODO: Actual native unwinding.
4363 for (int i = 0; i < 1; ++i) {
4364 emit_ptr (logbuffer, sample->ip);
4365 add_code_pointer ((uintptr_t) sample->ip);
4368 /* new in data version 6 */
4369 emit_uvalue (logbuffer, sample->count);
4371 for (int i = 0; i < sample->count; ++i)
4372 emit_method (logbuffer, sample->frames [i].method);
4374 EXIT_LOG_EXPLICIT (DO_SEND);
4376 mono_thread_hazardous_try_free (sample, reuse_sample_hit);
4378 dump_unmanaged_coderefs (prof);
4385 dumper_thread (void *arg)
4387 MonoProfiler *prof = (MonoProfiler *)arg;
4389 mono_threads_attach_tools_thread ();
4390 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler dumper");
4392 MonoProfilerThread *thread = init_thread (prof, FALSE);
4394 while (InterlockedRead (&prof->run_dumper_thread)) {
4395 mono_os_sem_wait (&prof->dumper_queue_sem, MONO_SEM_FLAGS_NONE);
4396 handle_dumper_queue_entry (prof);
4399 /* Drain any remaining entries on shutdown. */
4400 while (handle_dumper_queue_entry (prof));
4402 send_log_unsafe (FALSE);
4403 deinit_thread (thread);
4405 mono_thread_info_detach ();
4411 start_dumper_thread (MonoProfiler* prof)
4413 InterlockedWrite (&prof->run_dumper_thread, 1);
4415 if (!mono_native_thread_create (&prof->dumper_thread, dumper_thread, prof)) {
4416 fprintf (stderr, "Could not start dumper thread\n");
4422 register_counter (const char *name, gint32 *counter)
4424 mono_counters_register (name, MONO_COUNTER_UINT | MONO_COUNTER_PROFILER | MONO_COUNTER_MONOTONIC, counter);
4428 runtime_initialized (MonoProfiler *profiler)
4430 InterlockedWrite (&runtime_inited, 1);
4432 register_counter ("Sample events allocated", &sample_allocations_ctr);
4433 register_counter ("Log buffers allocated", &buffer_allocations_ctr);
4435 register_counter ("Event: Sync points", &sync_points_ctr);
4436 register_counter ("Event: Heap objects", &heap_objects_ctr);
4437 register_counter ("Event: Heap starts", &heap_starts_ctr);
4438 register_counter ("Event: Heap ends", &heap_ends_ctr);
4439 register_counter ("Event: Heap roots", &heap_roots_ctr);
4440 register_counter ("Event: GC events", &gc_events_ctr);
4441 register_counter ("Event: GC resizes", &gc_resizes_ctr);
4442 register_counter ("Event: GC allocations", &gc_allocs_ctr);
4443 register_counter ("Event: GC moves", &gc_moves_ctr);
4444 register_counter ("Event: GC handle creations", &gc_handle_creations_ctr);
4445 register_counter ("Event: GC handle deletions", &gc_handle_deletions_ctr);
4446 register_counter ("Event: GC finalize starts", &finalize_begins_ctr);
4447 register_counter ("Event: GC finalize ends", &finalize_ends_ctr);
4448 register_counter ("Event: GC finalize object starts", &finalize_object_begins_ctr);
4449 register_counter ("Event: GC finalize object ends", &finalize_object_ends_ctr);
4450 register_counter ("Event: Image loads", &image_loads_ctr);
4451 register_counter ("Event: Image unloads", &image_unloads_ctr);
4452 register_counter ("Event: Assembly loads", &assembly_loads_ctr);
4453 register_counter ("Event: Assembly unloads", &assembly_unloads_ctr);
4454 register_counter ("Event: Class loads", &class_loads_ctr);
4455 register_counter ("Event: Class unloads", &class_unloads_ctr);
4456 register_counter ("Event: Method entries", &method_entries_ctr);
4457 register_counter ("Event: Method exits", &method_exits_ctr);
4458 register_counter ("Event: Method exception leaves", &method_exception_exits_ctr);
4459 register_counter ("Event: Method JITs", &method_jits_ctr);
4460 register_counter ("Event: Code buffers", &code_buffers_ctr);
4461 register_counter ("Event: Exception throws", &exception_throws_ctr);
4462 register_counter ("Event: Exception clauses", &exception_clauses_ctr);
4463 register_counter ("Event: Monitor events", &monitor_events_ctr);
4464 register_counter ("Event: Thread starts", &thread_starts_ctr);
4465 register_counter ("Event: Thread ends", &thread_ends_ctr);
4466 register_counter ("Event: Thread names", &thread_names_ctr);
4467 register_counter ("Event: Domain loads", &domain_loads_ctr);
4468 register_counter ("Event: Domain unloads", &domain_unloads_ctr);
4469 register_counter ("Event: Domain names", &domain_names_ctr);
4470 register_counter ("Event: Context loads", &context_loads_ctr);
4471 register_counter ("Event: Context unloads", &context_unloads_ctr);
4472 register_counter ("Event: Sample binaries", &sample_ubins_ctr);
4473 register_counter ("Event: Sample symbols", &sample_usyms_ctr);
4474 register_counter ("Event: Sample hits", &sample_hits_ctr);
4475 register_counter ("Event: Counter descriptors", &counter_descriptors_ctr);
4476 register_counter ("Event: Counter samples", &counter_samples_ctr);
4477 register_counter ("Event: Performance counter descriptors", &perfcounter_descriptors_ctr);
4478 register_counter ("Event: Performance counter samples", &perfcounter_samples_ctr);
4479 register_counter ("Event: Coverage methods", &coverage_methods_ctr);
4480 register_counter ("Event: Coverage statements", &coverage_statements_ctr);
4481 register_counter ("Event: Coverage classes", &coverage_classes_ctr);
4482 register_counter ("Event: Coverage assemblies", &coverage_assemblies_ctr);
4484 counters_init (profiler);
4487 * We must start the helper thread before the writer thread. This is
4488 * because the helper thread sets up the command port which is written to
4489 * the log header by the writer thread.
4491 start_helper_thread (profiler);
4492 start_writer_thread (profiler);
4493 start_dumper_thread (profiler);
4496 static MonoProfiler*
4497 create_profiler (const char *args, const char *filename, GPtrArray *filters)
4501 int force_delete = 0;
4502 prof = (MonoProfiler *) g_calloc (1, sizeof (MonoProfiler));
4504 prof->args = pstrdup (args);
4505 prof->command_port = command_port;
4506 if (filename && *filename == '-') {
4509 g_warning ("WARNING: the output:-FILENAME option is deprecated, the profiler now always overrides the output file\n");
4512 //If filename begin with +, append the pid at the end
4513 if (filename && *filename == '+')
4514 filename = g_strdup_printf ("%s.%d", filename + 1, getpid ());
4519 filename = "|mprof-report -";
4521 filename = "output.mlpd";
4522 nf = (char*)filename;
4524 nf = new_filename (filename);
4526 int s = strlen (nf) + 32;
4527 char *p = (char *) g_malloc (s);
4528 snprintf (p, s, "|mprof-report '--out=%s' -", nf);
4534 prof->file = popen (nf + 1, "w");
4535 prof->pipe_output = 1;
4536 } else if (*nf == '#') {
4537 int fd = strtol (nf + 1, NULL, 10);
4538 prof->file = fdopen (fd, "a");
4542 prof->file = fopen (nf, "wb");
4545 fprintf (stderr, "Cannot create profiler output: %s\n", nf);
4549 #if defined (HAVE_SYS_ZLIB)
4551 prof->gzfile = gzdopen (fileno (prof->file), "wb");
4555 * If you hit this assert while increasing MAX_FRAMES, you need to increase
4556 * SAMPLE_BLOCK_SIZE as well.
4558 g_assert (SAMPLE_SLOT_SIZE (MAX_FRAMES) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (SAMPLE_BLOCK_SIZE));
4560 // FIXME: We should free this stuff too.
4561 mono_lock_free_allocator_init_size_class (&prof->sample_size_class, SAMPLE_SLOT_SIZE (num_frames), SAMPLE_BLOCK_SIZE);
4562 mono_lock_free_allocator_init_allocator (&prof->sample_allocator, &prof->sample_size_class, MONO_MEM_ACCOUNT_PROFILER);
4564 mono_lock_free_queue_init (&prof->sample_reuse_queue);
4566 g_assert (sizeof (WriterQueueEntry) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (WRITER_ENTRY_BLOCK_SIZE));
4568 // FIXME: We should free this stuff too.
4569 mono_lock_free_allocator_init_size_class (&prof->writer_entry_size_class, sizeof (WriterQueueEntry), WRITER_ENTRY_BLOCK_SIZE);
4570 mono_lock_free_allocator_init_allocator (&prof->writer_entry_allocator, &prof->writer_entry_size_class, MONO_MEM_ACCOUNT_PROFILER);
4572 mono_lock_free_queue_init (&prof->writer_queue);
4573 mono_os_sem_init (&prof->writer_queue_sem, 0);
4575 mono_lock_free_queue_init (&prof->dumper_queue);
4576 mono_os_sem_init (&prof->dumper_queue_sem, 0);
4578 mono_os_mutex_init (&prof->method_table_mutex);
4579 prof->method_table = mono_conc_hashtable_new (NULL, NULL);
4582 coverage_init (prof);
4583 prof->coverage_filters = filters;
4585 prof->startup_time = current_time ();
4590 * declaration to silence the compiler: this is the entry point that
4591 * mono will load from the shared library and call.
4594 mono_profiler_startup (const char *desc);
4597 mono_profiler_startup_log (const char *desc);
4600 * this is the entry point that will be used when the profiler
4601 * is embedded inside the main executable.
4604 mono_profiler_startup_log (const char *desc)
4606 mono_profiler_startup (desc);
4610 mono_profiler_startup (const char *desc)
4612 GPtrArray *filters = NULL;
4615 proflog_parse_args (&config, desc [3] == ':' ? desc + 4 : "");
4617 //XXX maybe later cleanup to use config directly
4618 nocalls = !(config.effective_mask & PROFLOG_CALL_EVENTS);
4619 no_counters = !(config.effective_mask & PROFLOG_COUNTER_EVENTS);
4620 do_report = config.do_report;
4621 do_debug = config.do_debug;
4622 do_heap_shot = (config.effective_mask & PROFLOG_HEAPSHOT_FEATURE);
4623 hs_mode_ondemand = config.hs_mode_ondemand;
4624 hs_mode_ms = config.hs_mode_ms;
4625 hs_mode_gc = config.hs_mode_gc;
4626 do_mono_sample = (config.effective_mask & PROFLOG_SAMPLING_FEATURE);
4627 use_zip = config.use_zip;
4628 command_port = config.command_port;
4629 num_frames = config.num_frames;
4630 notraces = config.notraces;
4631 max_allocated_sample_hits = config.max_allocated_sample_hits;
4632 max_call_depth = config.max_call_depth;
4633 do_coverage = (config.effective_mask & PROFLOG_CODE_COV_FEATURE);
4634 debug_coverage = config.debug_coverage;
4635 only_coverage = config.only_coverage;
4637 if (config.cov_filter_files) {
4638 filters = g_ptr_array_new ();
4640 for (i = 0; i < config.cov_filter_files->len; ++i) {
4641 const char *name = config.cov_filter_files->pdata [i];
4642 parse_cov_filter_file (filters, name);
4650 prof = create_profiler (desc, config.output_filename, filters);
4656 mono_lls_init (&profiler_thread_list, NULL);
4658 init_thread (prof, TRUE);
4660 //This two events are required for the profiler to work
4661 int events = MONO_PROFILE_THREADS | MONO_PROFILE_GC;
4663 //Required callbacks
4664 mono_profiler_install (prof, log_shutdown);
4665 mono_profiler_install_runtime_initialized (runtime_initialized);
4667 mono_profiler_install_gc (gc_event, gc_resize);
4668 mono_profiler_install_thread (thread_start, thread_end);
4670 //It's questionable whether we actually want this to be mandatory, maybe put it behind the actual event?
4671 mono_profiler_install_thread_name (thread_name);
4674 if (config.effective_mask & PROFLOG_DOMAIN_EVENTS) {
4675 events |= MONO_PROFILE_APPDOMAIN_EVENTS;
4676 mono_profiler_install_appdomain (NULL, domain_loaded, domain_unloaded, NULL);
4677 mono_profiler_install_appdomain_name (domain_name);
4680 if (config.effective_mask & PROFLOG_ASSEMBLY_EVENTS) {
4681 events |= MONO_PROFILE_ASSEMBLY_EVENTS;
4682 mono_profiler_install_assembly (NULL, assembly_loaded, assembly_unloaded, NULL);
4685 if (config.effective_mask & PROFLOG_MODULE_EVENTS) {
4686 events |= MONO_PROFILE_MODULE_EVENTS;
4687 mono_profiler_install_module (NULL, image_loaded, image_unloaded, NULL);
4690 if (config.effective_mask & PROFLOG_CLASS_EVENTS) {
4691 events |= MONO_PROFILE_CLASS_EVENTS;
4692 mono_profiler_install_class (NULL, class_loaded, class_unloaded, NULL);
4695 if (config.effective_mask & PROFLOG_JIT_COMPILATION_EVENTS) {
4696 events |= MONO_PROFILE_JIT_COMPILATION;
4697 mono_profiler_install_jit_end (method_jitted);
4698 mono_profiler_install_code_buffer_new (code_buffer_new);
4701 if (config.effective_mask & PROFLOG_EXCEPTION_EVENTS) {
4702 events |= MONO_PROFILE_EXCEPTIONS;
4703 mono_profiler_install_exception (throw_exc, method_exc_leave, NULL);
4704 mono_profiler_install_exception_clause (clause_exc);
4707 if (config.effective_mask & PROFLOG_ALLOCATION_EVENTS) {
4708 events |= MONO_PROFILE_ALLOCATIONS;
4709 mono_profiler_install_allocation (gc_alloc);
4712 //PROFLOG_GC_EVENTS is mandatory
4713 //PROFLOG_THREAD_EVENTS is mandatory
4715 if (config.effective_mask & PROFLOG_CALL_EVENTS) {
4716 events |= MONO_PROFILE_ENTER_LEAVE;
4717 mono_profiler_install_enter_leave (method_enter, method_leave);
4720 if (config.effective_mask & PROFLOG_INS_COVERAGE_EVENTS) {
4721 events |= MONO_PROFILE_INS_COVERAGE;
4722 mono_profiler_install_coverage_filter (coverage_filter);
4725 //XXX should we check for PROFLOG_SAMPLING_FEATURE instead??
4726 if (config.effective_mask & PROFLOG_SAMPLING_EVENTS) {
4727 events |= MONO_PROFILE_STATISTICAL;
4728 mono_profiler_set_statistical_mode (config.sampling_mode, config.sample_freq);
4729 mono_profiler_install_statistical (mono_sample_hit);
4732 if (config.effective_mask & PROFLOG_MONITOR_EVENTS) {
4733 events |= MONO_PROFILE_MONITOR_EVENTS;
4734 mono_profiler_install_monitor (monitor_event);
4737 if (config.effective_mask & PROFLOG_GC_MOVES_EVENTS) {
4738 events |= MONO_PROFILE_GC_MOVES;
4739 mono_profiler_install_gc_moves (gc_moves);
4742 // TODO split those in two profiler events
4743 if (config.effective_mask & (PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_HANDLE_EVENTS)) {
4744 events |= MONO_PROFILE_GC_ROOTS;
4745 mono_profiler_install_gc_roots (
4746 config.effective_mask & (PROFLOG_GC_HANDLE_EVENTS) ? gc_handle : NULL,
4747 (config.effective_mask & PROFLOG_GC_ROOT_EVENTS) ? gc_roots : NULL);
4750 if (config.effective_mask & PROFLOG_CONTEXT_EVENTS) {
4751 events |= MONO_PROFILE_CONTEXT_EVENTS;
4752 mono_profiler_install_context (context_loaded, context_unloaded);
4755 if (config.effective_mask & PROFLOG_FINALIZATION_EVENTS) {
4756 events |= MONO_PROFILE_GC_FINALIZATION;
4757 mono_profiler_install_gc_finalize (finalize_begin, finalize_object_begin, finalize_object_end, finalize_end);
4758 } else if (ENABLED (PROFLOG_HEAPSHOT_FEATURE) && config.hs_mode_ondemand) {
4759 //On Demand heapshot uses the finalizer thread to force a collection and thus a heapshot
4760 events |= MONO_PROFILE_GC_FINALIZATION;
4761 mono_profiler_install_gc_finalize (NULL, NULL, NULL, finalize_end);
4764 //PROFLOG_COUNTER_EVENTS is a pseudo event controled by the no_counters global var
4765 //PROFLOG_GC_HANDLE_EVENTS is handled together with PROFLOG_GC_ROOT_EVENTS
4767 mono_profiler_set_events ((MonoProfileFlags)events);