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 ();
1028 GPtrArray *arr = thread->methods ? thread->methods : (thread->methods = g_ptr_array_new ());
1029 g_ptr_array_add (arr, info);
1036 emit_method (LogBuffer *logbuffer, MonoMethod *method)
1038 register_method_local (method, NULL);
1039 emit_method_inner (logbuffer, method);
1043 emit_obj (LogBuffer *logbuffer, void *ptr)
1045 if (!logbuffer->obj_base)
1046 logbuffer->obj_base = (uintptr_t) ptr >> 3;
1048 emit_svalue (logbuffer, ((uintptr_t) ptr >> 3) - logbuffer->obj_base);
1050 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1054 emit_string (LogBuffer *logbuffer, const char *str, size_t size)
1058 for (; i < size; i++) {
1061 emit_byte (logbuffer, str [i]);
1064 emit_byte (logbuffer, '\0');
1068 emit_double (LogBuffer *logbuffer, double value)
1071 unsigned char buffer[8];
1072 memcpy (buffer, &value, 8);
1073 #if G_BYTE_ORDER == G_BIG_ENDIAN
1074 for (i = 7; i >= 0; i--)
1076 for (i = 0; i < 8; i++)
1078 emit_byte (logbuffer, buffer[i]);
1082 write_int16 (char *buf, int32_t value)
1085 for (i = 0; i < 2; ++i) {
1093 write_int32 (char *buf, int32_t value)
1096 for (i = 0; i < 4; ++i) {
1104 write_int64 (char *buf, int64_t value)
1107 for (i = 0; i < 8; ++i) {
1115 write_header_string (char *p, const char *str)
1117 size_t len = strlen (str) + 1;
1119 p = write_int32 (p, len);
1126 dump_header (MonoProfiler *profiler)
1128 const char *args = profiler->args;
1129 const char *arch = mono_config_get_cpu ();
1130 const char *os = mono_config_get_os ();
1132 char *hbuf = g_malloc (
1133 sizeof (gint32) /* header id */ +
1134 sizeof (gint8) /* major version */ +
1135 sizeof (gint8) /* minor version */ +
1136 sizeof (gint8) /* data version */ +
1137 sizeof (gint8) /* word size */ +
1138 sizeof (gint64) /* startup time */ +
1139 sizeof (gint32) /* timer overhead */ +
1140 sizeof (gint32) /* flags */ +
1141 sizeof (gint32) /* process id */ +
1142 sizeof (gint16) /* command port */ +
1143 sizeof (gint32) + strlen (args) + 1 /* arguments */ +
1144 sizeof (gint32) + strlen (arch) + 1 /* architecture */ +
1145 sizeof (gint32) + strlen (os) + 1 /* operating system */
1149 p = write_int32 (p, LOG_HEADER_ID);
1150 *p++ = LOG_VERSION_MAJOR;
1151 *p++ = LOG_VERSION_MINOR;
1152 *p++ = LOG_DATA_VERSION;
1153 *p++ = sizeof (void *);
1154 p = write_int64 (p, ((uint64_t) time (NULL)) * 1000);
1155 p = write_int32 (p, timer_overhead);
1156 p = write_int32 (p, 0); /* flags */
1157 p = write_int32 (p, process_id ());
1158 p = write_int16 (p, profiler->command_port);
1159 p = write_header_string (p, args);
1160 p = write_header_string (p, arch);
1161 p = write_header_string (p, os);
1163 #if defined (HAVE_SYS_ZLIB)
1164 if (profiler->gzfile) {
1165 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1169 fwrite (hbuf, p - hbuf, 1, profiler->file);
1170 fflush (profiler->file);
1177 * Must be called with the reader lock held if thread is the current thread, or
1178 * the exclusive lock if thread is a different thread. However, if thread is
1179 * the current thread, and init_thread () was called with add_to_lls = FALSE,
1180 * then no locking is necessary.
1183 send_buffer (MonoProfilerThread *thread)
1185 WriterQueueEntry *entry = mono_lock_free_alloc (&thread->profiler->writer_entry_allocator);
1186 entry->methods = thread->methods;
1187 entry->buffer = thread->buffer;
1189 mono_lock_free_queue_node_init (&entry->node, FALSE);
1191 mono_lock_free_queue_enqueue (&thread->profiler->writer_queue, &entry->node);
1192 mono_os_sem_post (&thread->profiler->writer_queue_sem);
1196 free_thread (gpointer p)
1198 MonoProfilerThread *thread = p;
1200 if (!thread->ended) {
1202 * The thread is being cleaned up by the main thread during
1203 * shutdown. This typically happens for internal runtime
1204 * threads. We need to synthesize a thread end event.
1207 InterlockedIncrement (&thread_ends_ctr);
1209 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
1210 LogBuffer *buf = ensure_logbuf_unsafe (thread,
1211 EVENT_SIZE /* event */ +
1212 BYTE_SIZE /* type */ +
1213 LEB128_SIZE /* tid */
1216 emit_event (buf, TYPE_END_UNLOAD | TYPE_METADATA);
1217 emit_byte (buf, TYPE_THREAD);
1218 emit_ptr (buf, (void *) thread->node.key);
1222 send_buffer (thread);
1228 remove_thread (MonoProfilerThread *thread)
1230 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
1232 if (mono_lls_remove (&profiler_thread_list, hp, &thread->node))
1233 mono_thread_hazardous_try_free (thread, free_thread);
1235 clear_hazard_pointers (hp);
1239 dump_buffer (MonoProfiler *profiler, LogBuffer *buf)
1245 dump_buffer (profiler, buf->next);
1247 if (buf->cursor - buf->buf) {
1248 p = write_int32 (p, BUF_ID);
1249 p = write_int32 (p, buf->cursor - buf->buf);
1250 p = write_int64 (p, buf->time_base);
1251 p = write_int64 (p, buf->ptr_base);
1252 p = write_int64 (p, buf->obj_base);
1253 p = write_int64 (p, buf->thread_id);
1254 p = write_int64 (p, buf->method_base);
1256 #if defined (HAVE_SYS_ZLIB)
1257 if (profiler->gzfile) {
1258 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1259 gzwrite (profiler->gzfile, buf->buf, buf->cursor - buf->buf);
1263 fwrite (hbuf, p - hbuf, 1, profiler->file);
1264 fwrite (buf->buf, buf->cursor - buf->buf, 1, profiler->file);
1265 fflush (profiler->file);
1269 free_buffer (buf, buf->size);
1273 dump_buffer_threadless (MonoProfiler *profiler, LogBuffer *buf)
1275 for (LogBuffer *iter = buf; iter; iter = iter->next)
1276 iter->thread_id = 0;
1278 dump_buffer (profiler, buf);
1281 // Only valid if init_thread () was called with add_to_lls = FALSE.
1283 send_log_unsafe (gboolean if_needed)
1285 MonoProfilerThread *thread = PROF_TLS_GET ();
1287 if (!if_needed || (if_needed && thread->buffer->next)) {
1288 if (!thread->attached)
1289 for (LogBuffer *iter = thread->buffer; iter; iter = iter->next)
1290 iter->thread_id = 0;
1292 send_buffer (thread);
1293 init_buffer_state (thread);
1297 // Assumes that the exclusive lock is held.
1299 sync_point_flush (void)
1301 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why don't we hold the exclusive lock?");
1303 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
1304 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
1306 send_buffer (thread);
1307 init_buffer_state (thread);
1308 } MONO_LLS_FOREACH_SAFE_END
1311 // Assumes that the exclusive lock is held.
1313 sync_point_mark (MonoProfilerSyncPointType type)
1315 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why don't we hold the exclusive lock?");
1317 ENTER_LOG (&sync_points_ctr, logbuffer,
1318 EVENT_SIZE /* event */ +
1319 LEB128_SIZE /* type */
1322 emit_event (logbuffer, TYPE_META | TYPE_SYNC_POINT);
1323 emit_byte (logbuffer, type);
1325 EXIT_LOG_EXPLICIT (NO_SEND);
1327 send_log_unsafe (FALSE);
1330 // Assumes that the exclusive lock is held.
1332 sync_point (MonoProfilerSyncPointType type)
1334 sync_point_flush ();
1335 sync_point_mark (type);
1339 gc_reference (MonoObject *obj, MonoClass *klass, uintptr_t size, uintptr_t num, MonoObject **refs, uintptr_t *offsets, void *data)
1341 /* account for object alignment in the heap */
1345 ENTER_LOG (&heap_objects_ctr, logbuffer,
1346 EVENT_SIZE /* event */ +
1347 LEB128_SIZE /* obj */ +
1348 LEB128_SIZE /* klass */ +
1349 LEB128_SIZE /* size */ +
1350 LEB128_SIZE /* num */ +
1352 LEB128_SIZE /* offset */ +
1353 LEB128_SIZE /* ref */
1357 emit_event (logbuffer, TYPE_HEAP_OBJECT | TYPE_HEAP);
1358 emit_obj (logbuffer, obj);
1359 emit_ptr (logbuffer, klass);
1360 emit_value (logbuffer, size);
1361 emit_value (logbuffer, num);
1363 uintptr_t last_offset = 0;
1365 for (int i = 0; i < num; ++i) {
1366 emit_value (logbuffer, offsets [i] - last_offset);
1367 last_offset = offsets [i];
1368 emit_obj (logbuffer, refs [i]);
1371 EXIT_LOG_EXPLICIT (DO_SEND);
1376 static unsigned int hs_mode_ms = 0;
1377 static unsigned int hs_mode_gc = 0;
1378 static unsigned int hs_mode_ondemand = 0;
1379 static unsigned int gc_count = 0;
1380 static uint64_t last_hs_time = 0;
1381 static gboolean do_heap_walk = FALSE;
1382 static gboolean ignore_heap_events;
1385 gc_roots (MonoProfiler *prof, int num, void **objects, int *root_types, uintptr_t *extra_info)
1387 if (ignore_heap_events)
1390 ENTER_LOG (&heap_roots_ctr, logbuffer,
1391 EVENT_SIZE /* event */ +
1392 LEB128_SIZE /* num */ +
1393 LEB128_SIZE /* collections */ +
1395 LEB128_SIZE /* object */ +
1396 LEB128_SIZE /* root type */ +
1397 LEB128_SIZE /* extra info */
1401 emit_event (logbuffer, TYPE_HEAP_ROOT | TYPE_HEAP);
1402 emit_value (logbuffer, num);
1403 emit_value (logbuffer, mono_gc_collection_count (mono_gc_max_generation ()));
1405 for (int i = 0; i < num; ++i) {
1406 emit_obj (logbuffer, objects [i]);
1407 emit_byte (logbuffer, root_types [i]);
1408 emit_value (logbuffer, extra_info [i]);
1411 EXIT_LOG_EXPLICIT (DO_SEND);
1416 trigger_on_demand_heapshot (void)
1418 if (heapshot_requested)
1419 mono_gc_collect (mono_gc_max_generation ());
1422 #define ALL_GC_EVENTS_MASK (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_EVENTS | PROFLOG_HEAPSHOT_FEATURE)
1425 gc_event (MonoProfiler *profiler, MonoGCEvent ev, int generation)
1427 if (ev == MONO_GC_EVENT_START) {
1428 uint64_t now = current_time ();
1430 if (hs_mode_ms && (now - last_hs_time) / 1000 * 1000 >= hs_mode_ms)
1431 do_heap_walk = TRUE;
1432 else if (hs_mode_gc && !(gc_count % hs_mode_gc))
1433 do_heap_walk = TRUE;
1434 else if (hs_mode_ondemand)
1435 do_heap_walk = heapshot_requested;
1436 else if (!hs_mode_ms && !hs_mode_gc && generation == mono_gc_max_generation ())
1437 do_heap_walk = TRUE;
1439 //If using heapshot, ignore events for collections we don't care
1440 if (ENABLED (PROFLOG_HEAPSHOT_FEATURE)) {
1441 // Ignore events generated during the collection itself (IE GC ROOTS)
1442 ignore_heap_events = !do_heap_walk;
1447 if (ENABLED (PROFLOG_GC_EVENTS)) {
1448 ENTER_LOG (&gc_events_ctr, logbuffer,
1449 EVENT_SIZE /* event */ +
1450 BYTE_SIZE /* gc event */ +
1451 BYTE_SIZE /* generation */
1454 emit_event (logbuffer, TYPE_GC_EVENT | TYPE_GC);
1455 emit_byte (logbuffer, ev);
1456 emit_byte (logbuffer, generation);
1458 EXIT_LOG_EXPLICIT (NO_SEND);
1462 case MONO_GC_EVENT_START:
1463 if (generation == mono_gc_max_generation ())
1467 case MONO_GC_EVENT_PRE_STOP_WORLD_LOCKED:
1469 * Ensure that no thread can be in the middle of writing to
1470 * a buffer when the world stops...
1472 buffer_lock_excl ();
1474 case MONO_GC_EVENT_POST_STOP_WORLD:
1476 * ... So that we now have a consistent view of all buffers.
1477 * This allows us to flush them. We need to do this because
1478 * they may contain object allocation events that need to be
1479 * committed to the log file before any object move events
1480 * that will be produced during this GC.
1482 if (ENABLED (ALL_GC_EVENTS_MASK))
1483 sync_point (SYNC_POINT_WORLD_STOP);
1486 * All heap events are surrounded by a HEAP_START and a HEAP_ENV event.
1487 * Right now, that's the case for GC Moves, GC Roots or heapshots.
1489 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1490 ENTER_LOG (&heap_starts_ctr, logbuffer,
1491 EVENT_SIZE /* event */
1494 emit_event (logbuffer, TYPE_HEAP_START | TYPE_HEAP);
1496 EXIT_LOG_EXPLICIT (DO_SEND);
1500 case MONO_GC_EVENT_PRE_START_WORLD:
1501 if (do_heap_shot && do_heap_walk)
1502 mono_gc_walk_heap (0, gc_reference, NULL);
1504 /* Matching HEAP_END to the HEAP_START from above */
1505 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1506 ENTER_LOG (&heap_ends_ctr, logbuffer,
1507 EVENT_SIZE /* event */
1510 emit_event (logbuffer, TYPE_HEAP_END | TYPE_HEAP);
1512 EXIT_LOG_EXPLICIT (DO_SEND);
1515 if (do_heap_shot && do_heap_walk) {
1516 do_heap_walk = FALSE;
1517 heapshot_requested = 0;
1518 last_hs_time = current_time ();
1522 * Similarly, we must now make sure that any object moves
1523 * written to the GC thread's buffer are flushed. Otherwise,
1524 * object allocation events for certain addresses could come
1525 * after the move events that made those addresses available.
1527 if (ENABLED (ALL_GC_EVENTS_MASK))
1528 sync_point_mark (SYNC_POINT_WORLD_START);
1530 case MONO_GC_EVENT_POST_START_WORLD_UNLOCKED:
1532 * Finally, it is safe to allow other threads to write to
1533 * their buffers again.
1535 buffer_unlock_excl ();
1543 gc_resize (MonoProfiler *profiler, int64_t new_size)
1545 ENTER_LOG (&gc_resizes_ctr, logbuffer,
1546 EVENT_SIZE /* event */ +
1547 LEB128_SIZE /* new size */
1550 emit_event (logbuffer, TYPE_GC_RESIZE | TYPE_GC);
1551 emit_value (logbuffer, new_size);
1553 EXIT_LOG_EXPLICIT (DO_SEND);
1558 MonoMethod* methods [MAX_FRAMES];
1559 int32_t il_offsets [MAX_FRAMES];
1560 int32_t native_offsets [MAX_FRAMES];
1563 static int num_frames = MAX_FRAMES;
1566 walk_stack (MonoMethod *method, int32_t native_offset, int32_t il_offset, mono_bool managed, void* data)
1568 FrameData *frame = (FrameData *)data;
1569 if (method && frame->count < num_frames) {
1570 frame->il_offsets [frame->count] = il_offset;
1571 frame->native_offsets [frame->count] = native_offset;
1572 frame->methods [frame->count++] = method;
1573 //printf ("In %d %s at %d (native: %d)\n", frame->count, mono_method_get_name (method), il_offset, native_offset);
1575 return frame->count == num_frames;
1579 * a note about stack walks: they can cause more profiler events to fire,
1580 * so we need to make sure they don't happen after we started emitting an
1581 * event, hence the collect_bt/emit_bt split.
1584 collect_bt (FrameData *data)
1587 mono_stack_walk_no_il (walk_stack, data);
1591 emit_bt (MonoProfiler *prof, LogBuffer *logbuffer, FrameData *data)
1593 /* FIXME: this is actually tons of data and we should
1594 * just output it the first time and use an id the next
1596 if (data->count > num_frames)
1597 printf ("bad num frames: %d\n", data->count);
1598 emit_value (logbuffer, data->count);
1599 //if (*p != data.count) {
1600 // 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);}
1601 while (data->count) {
1602 emit_method (logbuffer, data->methods [--data->count]);
1607 gc_alloc (MonoProfiler *prof, MonoObject *obj, MonoClass *klass)
1609 init_thread (prof, TRUE);
1611 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_ALLOC_BT : 0;
1613 uintptr_t len = mono_object_get_size (obj);
1614 /* account for object alignment in the heap */
1621 ENTER_LOG (&gc_allocs_ctr, logbuffer,
1622 EVENT_SIZE /* event */ +
1623 LEB128_SIZE /* klass */ +
1624 LEB128_SIZE /* obj */ +
1625 LEB128_SIZE /* size */ +
1627 LEB128_SIZE /* count */ +
1629 LEB128_SIZE /* method */
1634 emit_event (logbuffer, do_bt | TYPE_ALLOC);
1635 emit_ptr (logbuffer, klass);
1636 emit_obj (logbuffer, obj);
1637 emit_value (logbuffer, len);
1640 emit_bt (prof, logbuffer, &data);
1646 gc_moves (MonoProfiler *prof, void **objects, int num)
1648 ENTER_LOG (&gc_moves_ctr, logbuffer,
1649 EVENT_SIZE /* event */ +
1650 LEB128_SIZE /* num */ +
1652 LEB128_SIZE /* object */
1656 emit_event (logbuffer, TYPE_GC_MOVE | TYPE_GC);
1657 emit_value (logbuffer, num);
1659 for (int i = 0; i < num; ++i)
1660 emit_obj (logbuffer, objects [i]);
1662 EXIT_LOG_EXPLICIT (DO_SEND);
1666 gc_handle (MonoProfiler *prof, int op, int type, uintptr_t handle, MonoObject *obj)
1668 int do_bt = nocalls && InterlockedRead (&runtime_inited) && !notraces;
1674 gint32 *ctr = op == MONO_PROFILER_GC_HANDLE_CREATED ? &gc_handle_creations_ctr : &gc_handle_deletions_ctr;
1676 ENTER_LOG (ctr, logbuffer,
1677 EVENT_SIZE /* event */ +
1678 LEB128_SIZE /* type */ +
1679 LEB128_SIZE /* handle */ +
1680 (op == MONO_PROFILER_GC_HANDLE_CREATED ? (
1681 LEB128_SIZE /* obj */
1684 LEB128_SIZE /* count */ +
1686 LEB128_SIZE /* method */
1691 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1692 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_CREATED_BT : TYPE_GC_HANDLE_CREATED) | TYPE_GC);
1693 else if (op == MONO_PROFILER_GC_HANDLE_DESTROYED)
1694 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_DESTROYED_BT : TYPE_GC_HANDLE_DESTROYED) | TYPE_GC);
1696 g_assert_not_reached ();
1698 emit_value (logbuffer, type);
1699 emit_value (logbuffer, handle);
1701 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1702 emit_obj (logbuffer, obj);
1705 emit_bt (prof, logbuffer, &data);
1711 finalize_begin (MonoProfiler *prof)
1713 ENTER_LOG (&finalize_begins_ctr, buf,
1714 EVENT_SIZE /* event */
1717 emit_event (buf, TYPE_GC_FINALIZE_START | TYPE_GC);
1723 finalize_end (MonoProfiler *prof)
1725 trigger_on_demand_heapshot ();
1726 if (ENABLED (PROFLOG_FINALIZATION_EVENTS)) {
1727 ENTER_LOG (&finalize_ends_ctr, buf,
1728 EVENT_SIZE /* event */
1731 emit_event (buf, TYPE_GC_FINALIZE_END | TYPE_GC);
1738 finalize_object_begin (MonoProfiler *prof, MonoObject *obj)
1740 ENTER_LOG (&finalize_object_begins_ctr, buf,
1741 EVENT_SIZE /* event */ +
1742 LEB128_SIZE /* obj */
1745 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_START | TYPE_GC);
1746 emit_obj (buf, obj);
1752 finalize_object_end (MonoProfiler *prof, MonoObject *obj)
1754 ENTER_LOG (&finalize_object_ends_ctr, buf,
1755 EVENT_SIZE /* event */ +
1756 LEB128_SIZE /* obj */
1759 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_END | TYPE_GC);
1760 emit_obj (buf, obj);
1766 push_nesting (char *p, MonoClass *klass)
1771 nesting = mono_class_get_nesting_type (klass);
1773 p = push_nesting (p, nesting);
1777 name = mono_class_get_name (klass);
1778 nspace = mono_class_get_namespace (klass);
1781 p += strlen (nspace);
1791 type_name (MonoClass *klass)
1795 push_nesting (buf, klass);
1796 p = (char *) g_malloc (strlen (buf) + 1);
1802 image_loaded (MonoProfiler *prof, MonoImage *image, int result)
1804 if (result != MONO_PROFILE_OK)
1807 const char *name = mono_image_get_filename (image);
1808 int nlen = strlen (name) + 1;
1810 ENTER_LOG (&image_loads_ctr, logbuffer,
1811 EVENT_SIZE /* event */ +
1812 BYTE_SIZE /* type */ +
1813 LEB128_SIZE /* image */ +
1817 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1818 emit_byte (logbuffer, TYPE_IMAGE);
1819 emit_ptr (logbuffer, image);
1820 memcpy (logbuffer->cursor, name, nlen);
1821 logbuffer->cursor += nlen;
1827 image_unloaded (MonoProfiler *prof, MonoImage *image)
1829 const char *name = mono_image_get_filename (image);
1830 int nlen = strlen (name) + 1;
1832 ENTER_LOG (&image_unloads_ctr, logbuffer,
1833 EVENT_SIZE /* event */ +
1834 BYTE_SIZE /* type */ +
1835 LEB128_SIZE /* image */ +
1839 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1840 emit_byte (logbuffer, TYPE_IMAGE);
1841 emit_ptr (logbuffer, image);
1842 memcpy (logbuffer->cursor, name, nlen);
1843 logbuffer->cursor += nlen;
1849 assembly_loaded (MonoProfiler *prof, MonoAssembly *assembly, int result)
1851 if (result != MONO_PROFILE_OK)
1854 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1855 int nlen = strlen (name) + 1;
1856 MonoImage *image = mono_assembly_get_image (assembly);
1858 ENTER_LOG (&assembly_loads_ctr, logbuffer,
1859 EVENT_SIZE /* event */ +
1860 BYTE_SIZE /* type */ +
1861 LEB128_SIZE /* assembly */ +
1862 LEB128_SIZE /* image */ +
1866 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1867 emit_byte (logbuffer, TYPE_ASSEMBLY);
1868 emit_ptr (logbuffer, assembly);
1869 emit_ptr (logbuffer, image);
1870 memcpy (logbuffer->cursor, name, nlen);
1871 logbuffer->cursor += nlen;
1879 assembly_unloaded (MonoProfiler *prof, MonoAssembly *assembly)
1881 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1882 int nlen = strlen (name) + 1;
1883 MonoImage *image = mono_assembly_get_image (assembly);
1885 ENTER_LOG (&assembly_unloads_ctr, logbuffer,
1886 EVENT_SIZE /* event */ +
1887 BYTE_SIZE /* type */ +
1888 LEB128_SIZE /* assembly */ +
1889 LEB128_SIZE /* image */ +
1893 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1894 emit_byte (logbuffer, TYPE_ASSEMBLY);
1895 emit_ptr (logbuffer, assembly);
1896 emit_ptr (logbuffer, image);
1897 memcpy (logbuffer->cursor, name, nlen);
1898 logbuffer->cursor += nlen;
1906 class_loaded (MonoProfiler *prof, MonoClass *klass, int result)
1908 if (result != MONO_PROFILE_OK)
1913 if (InterlockedRead (&runtime_inited))
1914 name = mono_type_get_name (mono_class_get_type (klass));
1916 name = type_name (klass);
1918 int nlen = strlen (name) + 1;
1919 MonoImage *image = mono_class_get_image (klass);
1921 ENTER_LOG (&class_loads_ctr, logbuffer,
1922 EVENT_SIZE /* event */ +
1923 BYTE_SIZE /* type */ +
1924 LEB128_SIZE /* klass */ +
1925 LEB128_SIZE /* image */ +
1929 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1930 emit_byte (logbuffer, TYPE_CLASS);
1931 emit_ptr (logbuffer, klass);
1932 emit_ptr (logbuffer, image);
1933 memcpy (logbuffer->cursor, name, nlen);
1934 logbuffer->cursor += nlen;
1945 class_unloaded (MonoProfiler *prof, MonoClass *klass)
1949 if (InterlockedRead (&runtime_inited))
1950 name = mono_type_get_name (mono_class_get_type (klass));
1952 name = type_name (klass);
1954 int nlen = strlen (name) + 1;
1955 MonoImage *image = mono_class_get_image (klass);
1957 ENTER_LOG (&class_unloads_ctr, logbuffer,
1958 EVENT_SIZE /* event */ +
1959 BYTE_SIZE /* type */ +
1960 LEB128_SIZE /* klass */ +
1961 LEB128_SIZE /* image */ +
1965 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1966 emit_byte (logbuffer, TYPE_CLASS);
1967 emit_ptr (logbuffer, klass);
1968 emit_ptr (logbuffer, image);
1969 memcpy (logbuffer->cursor, name, nlen);
1970 logbuffer->cursor += nlen;
1980 static void process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method);
1983 method_enter (MonoProfiler *prof, MonoMethod *method)
1985 process_method_enter_coverage (prof, method);
1987 if (!only_coverage && PROF_TLS_GET ()->call_depth++ <= max_call_depth) {
1988 ENTER_LOG (&method_entries_ctr, logbuffer,
1989 EVENT_SIZE /* event */ +
1990 LEB128_SIZE /* method */
1993 emit_event (logbuffer, TYPE_ENTER | TYPE_METHOD);
1994 emit_method (logbuffer, method);
2001 method_leave (MonoProfiler *prof, MonoMethod *method)
2003 if (!only_coverage && --PROF_TLS_GET ()->call_depth <= max_call_depth) {
2004 ENTER_LOG (&method_exits_ctr, logbuffer,
2005 EVENT_SIZE /* event */ +
2006 LEB128_SIZE /* method */
2009 emit_event (logbuffer, TYPE_LEAVE | TYPE_METHOD);
2010 emit_method (logbuffer, method);
2017 method_exc_leave (MonoProfiler *prof, MonoMethod *method)
2019 if (!only_coverage && !nocalls && --PROF_TLS_GET ()->call_depth <= max_call_depth) {
2020 ENTER_LOG (&method_exception_exits_ctr, logbuffer,
2021 EVENT_SIZE /* event */ +
2022 LEB128_SIZE /* method */
2025 emit_event (logbuffer, TYPE_EXC_LEAVE | TYPE_METHOD);
2026 emit_method (logbuffer, method);
2033 method_jitted (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *ji, int result)
2035 if (result != MONO_PROFILE_OK)
2038 register_method_local (method, ji);
2042 code_buffer_new (MonoProfiler *prof, void *buffer, int size, MonoProfilerCodeBufferType type, void *data)
2047 if (type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE) {
2048 name = (char *) data;
2049 nlen = strlen (name) + 1;
2055 ENTER_LOG (&code_buffers_ctr, logbuffer,
2056 EVENT_SIZE /* event */ +
2057 BYTE_SIZE /* type */ +
2058 LEB128_SIZE /* buffer */ +
2059 LEB128_SIZE /* size */ +
2065 emit_event (logbuffer, TYPE_JITHELPER | TYPE_RUNTIME);
2066 emit_byte (logbuffer, type);
2067 emit_ptr (logbuffer, buffer);
2068 emit_value (logbuffer, size);
2071 memcpy (logbuffer->cursor, name, nlen);
2072 logbuffer->cursor += nlen;
2079 throw_exc (MonoProfiler *prof, MonoObject *object)
2081 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_THROW_BT : 0;
2087 ENTER_LOG (&exception_throws_ctr, logbuffer,
2088 EVENT_SIZE /* event */ +
2089 LEB128_SIZE /* object */ +
2091 LEB128_SIZE /* count */ +
2093 LEB128_SIZE /* method */
2098 emit_event (logbuffer, do_bt | TYPE_EXCEPTION);
2099 emit_obj (logbuffer, object);
2102 emit_bt (prof, logbuffer, &data);
2108 clause_exc (MonoProfiler *prof, MonoMethod *method, int clause_type, int clause_num, MonoObject *exc)
2110 ENTER_LOG (&exception_clauses_ctr, logbuffer,
2111 EVENT_SIZE /* event */ +
2112 BYTE_SIZE /* clause type */ +
2113 LEB128_SIZE /* clause num */ +
2114 LEB128_SIZE /* method */
2117 emit_event (logbuffer, TYPE_EXCEPTION | TYPE_CLAUSE);
2118 emit_byte (logbuffer, clause_type);
2119 emit_value (logbuffer, clause_num);
2120 emit_method (logbuffer, method);
2121 emit_obj (logbuffer, exc);
2127 monitor_event (MonoProfiler *profiler, MonoObject *object, MonoProfilerMonitorEvent ev)
2129 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_MONITOR_BT : 0;
2135 ENTER_LOG (&monitor_events_ctr, logbuffer,
2136 EVENT_SIZE /* event */ +
2137 BYTE_SIZE /* ev */ +
2138 LEB128_SIZE /* object */ +
2140 LEB128_SIZE /* count */ +
2142 LEB128_SIZE /* method */
2147 emit_event (logbuffer, do_bt | TYPE_MONITOR);
2148 emit_byte (logbuffer, ev);
2149 emit_obj (logbuffer, object);
2152 emit_bt (profiler, logbuffer, &data);
2158 thread_start (MonoProfiler *prof, uintptr_t tid)
2160 init_thread (prof, TRUE);
2162 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2163 ENTER_LOG (&thread_starts_ctr, logbuffer,
2164 EVENT_SIZE /* event */ +
2165 BYTE_SIZE /* type */ +
2166 LEB128_SIZE /* tid */
2169 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2170 emit_byte (logbuffer, TYPE_THREAD);
2171 emit_ptr (logbuffer, (void*) tid);
2178 thread_end (MonoProfiler *prof, uintptr_t tid)
2180 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2181 ENTER_LOG (&thread_ends_ctr, logbuffer,
2182 EVENT_SIZE /* event */ +
2183 BYTE_SIZE /* type */ +
2184 LEB128_SIZE /* tid */
2187 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2188 emit_byte (logbuffer, TYPE_THREAD);
2189 emit_ptr (logbuffer, (void*) tid);
2191 EXIT_LOG_EXPLICIT (NO_SEND);
2194 MonoProfilerThread *thread = PROF_TLS_GET ();
2196 thread->ended = TRUE;
2197 remove_thread (thread);
2199 PROF_TLS_SET (NULL);
2203 thread_name (MonoProfiler *prof, uintptr_t tid, const char *name)
2205 int len = strlen (name) + 1;
2207 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2208 ENTER_LOG (&thread_names_ctr, logbuffer,
2209 EVENT_SIZE /* event */ +
2210 BYTE_SIZE /* type */ +
2211 LEB128_SIZE /* tid */ +
2215 emit_event (logbuffer, TYPE_METADATA);
2216 emit_byte (logbuffer, TYPE_THREAD);
2217 emit_ptr (logbuffer, (void*)tid);
2218 memcpy (logbuffer->cursor, name, len);
2219 logbuffer->cursor += len;
2226 domain_loaded (MonoProfiler *prof, MonoDomain *domain, int result)
2228 if (result != MONO_PROFILE_OK)
2231 ENTER_LOG (&domain_loads_ctr, logbuffer,
2232 EVENT_SIZE /* event */ +
2233 BYTE_SIZE /* type */ +
2234 LEB128_SIZE /* domain id */
2237 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2238 emit_byte (logbuffer, TYPE_DOMAIN);
2239 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2245 domain_unloaded (MonoProfiler *prof, MonoDomain *domain)
2247 ENTER_LOG (&domain_unloads_ctr, logbuffer,
2248 EVENT_SIZE /* event */ +
2249 BYTE_SIZE /* type */ +
2250 LEB128_SIZE /* domain id */
2253 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2254 emit_byte (logbuffer, TYPE_DOMAIN);
2255 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2261 domain_name (MonoProfiler *prof, MonoDomain *domain, const char *name)
2263 int nlen = strlen (name) + 1;
2265 ENTER_LOG (&domain_names_ctr, logbuffer,
2266 EVENT_SIZE /* event */ +
2267 BYTE_SIZE /* type */ +
2268 LEB128_SIZE /* domain id */ +
2272 emit_event (logbuffer, TYPE_METADATA);
2273 emit_byte (logbuffer, TYPE_DOMAIN);
2274 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2275 memcpy (logbuffer->cursor, name, nlen);
2276 logbuffer->cursor += nlen;
2282 context_loaded (MonoProfiler *prof, MonoAppContext *context)
2284 ENTER_LOG (&context_loads_ctr, logbuffer,
2285 EVENT_SIZE /* event */ +
2286 BYTE_SIZE /* type */ +
2287 LEB128_SIZE /* context id */ +
2288 LEB128_SIZE /* domain id */
2291 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2292 emit_byte (logbuffer, TYPE_CONTEXT);
2293 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2294 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2300 context_unloaded (MonoProfiler *prof, MonoAppContext *context)
2302 ENTER_LOG (&context_unloads_ctr, logbuffer,
2303 EVENT_SIZE /* event */ +
2304 BYTE_SIZE /* type */ +
2305 LEB128_SIZE /* context id */ +
2306 LEB128_SIZE /* domain id */
2309 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2310 emit_byte (logbuffer, TYPE_CONTEXT);
2311 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2312 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2325 MonoLockFreeQueueNode node;
2331 AsyncFrameInfo frames [MONO_ZERO_LEN_ARRAY];
2335 async_walk_stack (MonoMethod *method, MonoDomain *domain, void *base_address, int offset, void *data)
2337 SampleHit *sample = (SampleHit *) data;
2339 if (sample->count < num_frames) {
2340 int i = sample->count;
2342 sample->frames [i].method = method;
2343 sample->frames [i].domain = domain;
2344 sample->frames [i].base_address = base_address;
2345 sample->frames [i].offset = offset;
2350 return sample->count == num_frames;
2353 #define SAMPLE_SLOT_SIZE(FRAMES) (sizeof (SampleHit) + sizeof (AsyncFrameInfo) * (FRAMES - MONO_ZERO_LEN_ARRAY))
2354 #define SAMPLE_BLOCK_SIZE (mono_pagesize ())
2357 enqueue_sample_hit (gpointer p)
2359 SampleHit *sample = p;
2361 mono_lock_free_queue_node_unpoison (&sample->node);
2362 mono_lock_free_queue_enqueue (&sample->prof->dumper_queue, &sample->node);
2363 mono_os_sem_post (&sample->prof->dumper_queue_sem);
2367 mono_sample_hit (MonoProfiler *profiler, unsigned char *ip, void *context)
2370 * Please note: We rely on the runtime loading the profiler with
2371 * MONO_DL_EAGER (RTLD_NOW) so that references to runtime functions within
2372 * this function (and its siblings) are resolved when the profiler is
2373 * loaded. Otherwise, we would potentially invoke the dynamic linker when
2374 * invoking runtime functions, which is not async-signal-safe.
2377 if (InterlockedRead (&in_shutdown))
2380 SampleHit *sample = (SampleHit *) mono_lock_free_queue_dequeue (&profiler->sample_reuse_queue);
2384 * If we're out of reusable sample events and we're not allowed to
2385 * allocate more, we have no choice but to drop the event.
2387 if (InterlockedRead (&sample_allocations_ctr) >= max_allocated_sample_hits)
2390 sample = mono_lock_free_alloc (&profiler->sample_allocator);
2391 sample->prof = profiler;
2392 mono_lock_free_queue_node_init (&sample->node, TRUE);
2394 InterlockedIncrement (&sample_allocations_ctr);
2398 mono_stack_walk_async_safe (&async_walk_stack, context, sample);
2400 sample->time = current_time ();
2401 sample->tid = thread_id ();
2404 mono_thread_hazardous_try_free (sample, enqueue_sample_hit);
2407 static uintptr_t *code_pages = 0;
2408 static int num_code_pages = 0;
2409 static int size_code_pages = 0;
2410 #define CPAGE_SHIFT (9)
2411 #define CPAGE_SIZE (1 << CPAGE_SHIFT)
2412 #define CPAGE_MASK (~(CPAGE_SIZE - 1))
2413 #define CPAGE_ADDR(p) ((p) & CPAGE_MASK)
2416 add_code_page (uintptr_t *hash, uintptr_t hsize, uintptr_t page)
2419 uintptr_t start_pos;
2420 start_pos = (page >> CPAGE_SHIFT) % hsize;
2423 if (hash [i] && CPAGE_ADDR (hash [i]) == CPAGE_ADDR (page)) {
2425 } else if (!hash [i]) {
2432 } while (i != start_pos);
2433 /* should not happen */
2434 printf ("failed code page store\n");
2439 add_code_pointer (uintptr_t ip)
2442 if (num_code_pages * 2 >= size_code_pages) {
2444 uintptr_t old_size = size_code_pages;
2445 size_code_pages *= 2;
2446 if (size_code_pages == 0)
2447 size_code_pages = 16;
2448 n = (uintptr_t *) g_calloc (sizeof (uintptr_t) * size_code_pages, 1);
2449 for (i = 0; i < old_size; ++i) {
2451 add_code_page (n, size_code_pages, code_pages [i]);
2454 g_free (code_pages);
2457 num_code_pages += add_code_page (code_pages, size_code_pages, ip & CPAGE_MASK);
2460 /* ELF code crashes on some systems. */
2461 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2464 dump_ubin (MonoProfiler *prof, const char *filename, uintptr_t load_addr, uint64_t offset, uintptr_t size)
2466 int len = strlen (filename) + 1;
2468 ENTER_LOG (&sample_ubins_ctr, logbuffer,
2469 EVENT_SIZE /* event */ +
2470 LEB128_SIZE /* load address */ +
2471 LEB128_SIZE /* offset */ +
2472 LEB128_SIZE /* size */ +
2473 nlen /* file name */
2476 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_UBIN);
2477 emit_ptr (logbuffer, load_addr);
2478 emit_uvalue (logbuffer, offset);
2479 emit_uvalue (logbuffer, size);
2480 memcpy (logbuffer->cursor, filename, len);
2481 logbuffer->cursor += len;
2483 EXIT_LOG_EXPLICIT (DO_SEND);
2488 dump_usym (MonoProfiler *prof, const char *name, uintptr_t value, uintptr_t size)
2490 int len = strlen (name) + 1;
2492 ENTER_LOG (&sample_usyms_ctr, logbuffer,
2493 EVENT_SIZE /* event */ +
2494 LEB128_SIZE /* value */ +
2495 LEB128_SIZE /* size */ +
2499 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_USYM);
2500 emit_ptr (logbuffer, (void*)value);
2501 emit_value (logbuffer, size);
2502 memcpy (logbuffer->cursor, name, len);
2503 logbuffer->cursor += len;
2505 EXIT_LOG_EXPLICIT (DO_SEND);
2508 /* ELF code crashes on some systems. */
2509 //#if defined(ELFMAG0)
2512 #if SIZEOF_VOID_P == 4
2513 #define ELF_WSIZE 32
2515 #define ELF_WSIZE 64
2518 #define ElfW(type) _ElfW (Elf, ELF_WSIZE, type)
2519 #define _ElfW(e,w,t) _ElfW_1 (e, w, _##t)
2520 #define _ElfW_1(e,w,t) e##w##t
2524 dump_elf_symbols (MonoProfiler *prof, ElfW(Sym) *symbols, int num_symbols, const char *strtab, void *load_addr)
2527 for (i = 0; i < num_symbols; ++i) {
2529 sym = strtab + symbols [i].st_name;
2530 if (!symbols [i].st_name || !symbols [i].st_size || (symbols [i].st_info & 0xf) != STT_FUNC)
2532 //printf ("symbol %s at %d\n", sym, symbols [i].st_value);
2533 dump_usym (sym, (uintptr_t)load_addr + symbols [i].st_value, symbols [i].st_size);
2538 read_elf_symbols (MonoProfiler *prof, const char *filename, void *load_addr)
2545 ElfW(Shdr) *sheader;
2546 ElfW(Shdr) *shstrtabh;
2547 ElfW(Shdr) *symtabh = NULL;
2548 ElfW(Shdr) *strtabh = NULL;
2549 ElfW(Sym) *symbols = NULL;
2553 fd = open (filename, O_RDONLY);
2556 if (fstat (fd, &statb) != 0) {
2560 file_size = statb.st_size;
2561 data = mmap (NULL, file_size, PROT_READ, MAP_PRIVATE, fd, 0);
2563 if (data == MAP_FAILED)
2566 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2567 header->e_ident [EI_MAG1] != ELFMAG1 ||
2568 header->e_ident [EI_MAG2] != ELFMAG2 ||
2569 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2570 munmap (data, file_size);
2573 sheader = (void*)((char*)data + header->e_shoff);
2574 shstrtabh = (void*)((char*)sheader + (header->e_shentsize * header->e_shstrndx));
2575 strtab = (const char*)data + shstrtabh->sh_offset;
2576 for (i = 0; i < header->e_shnum; ++i) {
2577 //printf ("section header: %d\n", sheader->sh_type);
2578 if (sheader->sh_type == SHT_SYMTAB) {
2580 strtabh = (void*)((char*)data + header->e_shoff + sheader->sh_link * header->e_shentsize);
2581 /*printf ("symtab section header: %d, .strstr: %d\n", i, sheader->sh_link);*/
2584 sheader = (void*)((char*)sheader + header->e_shentsize);
2586 if (!symtabh || !strtabh) {
2587 munmap (data, file_size);
2590 strtab = (const char*)data + strtabh->sh_offset;
2591 num_symbols = symtabh->sh_size / symtabh->sh_entsize;
2592 symbols = (void*)((char*)data + symtabh->sh_offset);
2593 dump_elf_symbols (symbols, num_symbols, strtab, load_addr);
2594 munmap (data, file_size);
2599 /* ELF code crashes on some systems. */
2600 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2603 elf_dl_callback (struct dl_phdr_info *info, size_t size, void *data)
2605 MonoProfiler *prof = data;
2607 const char *filename;
2609 char *a = (void*)info->dlpi_addr;
2611 ElfW(Dyn) *dyn = NULL;
2612 ElfW(Sym) *symtab = NULL;
2613 ElfW(Word) *hash_table = NULL;
2614 ElfW(Ehdr) *header = NULL;
2615 const char* strtab = NULL;
2616 for (obj = prof->binary_objects; obj; obj = obj->next) {
2620 filename = info->dlpi_name;
2623 if (!info->dlpi_addr && !filename [0]) {
2624 int l = readlink ("/proc/self/exe", buf, sizeof (buf) - 1);
2630 obj = g_calloc (sizeof (BinaryObject), 1);
2631 obj->addr = (void*)info->dlpi_addr;
2632 obj->name = pstrdup (filename);
2633 obj->next = prof->binary_objects;
2634 prof->binary_objects = obj;
2635 //printf ("loaded file: %s at %p, segments: %d\n", filename, (void*)info->dlpi_addr, info->dlpi_phnum);
2637 for (i = 0; i < info->dlpi_phnum; ++i) {
2638 //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);
2639 if (info->dlpi_phdr[i].p_type == PT_LOAD && !header) {
2640 header = (ElfW(Ehdr)*)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2641 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2642 header->e_ident [EI_MAG1] != ELFMAG1 ||
2643 header->e_ident [EI_MAG2] != ELFMAG2 ||
2644 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2647 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);
2648 } else if (info->dlpi_phdr[i].p_type == PT_DYNAMIC) {
2649 dyn = (ElfW(Dyn) *)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2652 if (read_elf_symbols (prof, filename, (void*)info->dlpi_addr))
2654 if (!info->dlpi_name || !info->dlpi_name[0])
2658 for (i = 0; dyn [i].d_tag != DT_NULL; ++i) {
2659 if (dyn [i].d_tag == DT_SYMTAB) {
2660 if (symtab && do_debug)
2661 printf ("multiple symtabs: %d\n", i);
2662 symtab = (ElfW(Sym) *)(a + dyn [i].d_un.d_ptr);
2663 } else if (dyn [i].d_tag == DT_HASH) {
2664 hash_table = (ElfW(Word) *)(a + dyn [i].d_un.d_ptr);
2665 } else if (dyn [i].d_tag == DT_STRTAB) {
2666 strtab = (const char*)(a + dyn [i].d_un.d_ptr);
2671 num_sym = hash_table [1];
2672 dump_elf_symbols (prof, symtab, num_sym, strtab, (void*)info->dlpi_addr);
2677 load_binaries (MonoProfiler *prof)
2679 dl_iterate_phdr (elf_dl_callback, prof);
2684 load_binaries (MonoProfiler *prof)
2691 symbol_for (uintptr_t code)
2694 void *ip = (void*)code;
2696 if (dladdr (ip, &di)) {
2698 return di.dli_sname;
2701 names = backtrace_symbols (&ip, 1);
2703 const char* p = names [0];
2714 dump_unmanaged_coderefs (MonoProfiler *prof)
2717 const char* last_symbol;
2718 uintptr_t addr, page_end;
2720 if (load_binaries (prof))
2722 for (i = 0; i < size_code_pages; ++i) {
2724 if (!code_pages [i] || code_pages [i] & 1)
2727 addr = CPAGE_ADDR (code_pages [i]);
2728 page_end = addr + CPAGE_SIZE;
2729 code_pages [i] |= 1;
2730 /* we dump the symbols for the whole page */
2731 for (; addr < page_end; addr += 16) {
2732 sym = symbol_for (addr);
2733 if (sym && sym == last_symbol)
2738 dump_usym (prof, sym, addr, 0); /* let's not guess the size */
2739 //printf ("found symbol at %p: %s\n", (void*)addr, sym);
2744 typedef struct MonoCounterAgent {
2745 MonoCounter *counter;
2746 // MonoCounterAgent specific data :
2751 struct MonoCounterAgent *next;
2754 static MonoCounterAgent* counters;
2755 static int counters_index = 1;
2756 static mono_mutex_t counters_mutex;
2759 counters_add_agent (MonoCounter *counter)
2761 if (InterlockedRead (&in_shutdown))
2764 MonoCounterAgent *agent, *item;
2766 mono_os_mutex_lock (&counters_mutex);
2768 for (agent = counters; agent; agent = agent->next) {
2769 if (agent->counter == counter) {
2770 agent->value_size = 0;
2772 g_free (agent->value);
2773 agent->value = NULL;
2779 agent = (MonoCounterAgent *) g_malloc (sizeof (MonoCounterAgent));
2780 agent->counter = counter;
2781 agent->value = NULL;
2782 agent->value_size = 0;
2783 agent->index = counters_index++;
2797 mono_os_mutex_unlock (&counters_mutex);
2801 counters_init_foreach_callback (MonoCounter *counter, gpointer data)
2803 counters_add_agent (counter);
2808 counters_init (MonoProfiler *profiler)
2810 mono_os_mutex_init (&counters_mutex);
2812 mono_counters_on_register (&counters_add_agent);
2813 mono_counters_foreach (counters_init_foreach_callback, NULL);
2817 counters_emit (MonoProfiler *profiler)
2819 MonoCounterAgent *agent;
2822 EVENT_SIZE /* event */ +
2823 LEB128_SIZE /* len */
2826 mono_os_mutex_lock (&counters_mutex);
2828 for (agent = counters; agent; agent = agent->next) {
2833 LEB128_SIZE /* section */ +
2834 strlen (mono_counter_get_name (agent->counter)) + 1 /* name */ +
2835 BYTE_SIZE /* type */ +
2836 BYTE_SIZE /* unit */ +
2837 BYTE_SIZE /* variance */ +
2838 LEB128_SIZE /* index */
2847 ENTER_LOG (&counter_descriptors_ctr, logbuffer, size);
2849 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
2850 emit_value (logbuffer, len);
2852 for (agent = counters; agent; agent = agent->next) {
2858 name = mono_counter_get_name (agent->counter);
2859 emit_value (logbuffer, mono_counter_get_section (agent->counter));
2860 emit_string (logbuffer, name, strlen (name) + 1);
2861 emit_byte (logbuffer, mono_counter_get_type (agent->counter));
2862 emit_byte (logbuffer, mono_counter_get_unit (agent->counter));
2863 emit_byte (logbuffer, mono_counter_get_variance (agent->counter));
2864 emit_value (logbuffer, agent->index);
2869 EXIT_LOG_EXPLICIT (DO_SEND);
2872 mono_os_mutex_unlock (&counters_mutex);
2876 counters_sample (MonoProfiler *profiler, uint64_t timestamp)
2878 MonoCounterAgent *agent;
2879 MonoCounter *counter;
2885 counters_emit (profiler);
2888 buffer = g_calloc (1, buffer_size);
2890 mono_os_mutex_lock (&counters_mutex);
2893 EVENT_SIZE /* event */
2896 for (agent = counters; agent; agent = agent->next) {
2898 LEB128_SIZE /* index */ +
2899 BYTE_SIZE /* type */ +
2900 mono_counter_get_size (agent->counter) /* value */
2905 LEB128_SIZE /* stop marker */
2908 ENTER_LOG (&counter_samples_ctr, logbuffer, size);
2910 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
2912 for (agent = counters; agent; agent = agent->next) {
2915 counter = agent->counter;
2917 size = mono_counter_get_size (counter);
2919 if (size > buffer_size) {
2921 buffer = g_realloc (buffer, buffer_size);
2924 memset (buffer, 0, buffer_size);
2926 g_assert (mono_counters_sample (counter, buffer, size));
2928 type = mono_counter_get_type (counter);
2930 if (!agent->value) {
2931 agent->value = g_calloc (1, size);
2932 agent->value_size = size;
2934 if (type == MONO_COUNTER_STRING) {
2935 if (strcmp (agent->value, buffer) == 0)
2938 if (agent->value_size == size && memcmp (agent->value, buffer, size) == 0)
2943 emit_uvalue (logbuffer, agent->index);
2944 emit_byte (logbuffer, type);
2946 case MONO_COUNTER_INT:
2947 #if SIZEOF_VOID_P == 4
2948 case MONO_COUNTER_WORD:
2950 emit_svalue (logbuffer, *(int*)buffer - *(int*)agent->value);
2952 case MONO_COUNTER_UINT:
2953 emit_uvalue (logbuffer, *(guint*)buffer - *(guint*)agent->value);
2955 case MONO_COUNTER_TIME_INTERVAL:
2956 case MONO_COUNTER_LONG:
2957 #if SIZEOF_VOID_P == 8
2958 case MONO_COUNTER_WORD:
2960 emit_svalue (logbuffer, *(gint64*)buffer - *(gint64*)agent->value);
2962 case MONO_COUNTER_ULONG:
2963 emit_uvalue (logbuffer, *(guint64*)buffer - *(guint64*)agent->value);
2965 case MONO_COUNTER_DOUBLE:
2966 emit_double (logbuffer, *(double*)buffer);
2968 case MONO_COUNTER_STRING:
2970 emit_byte (logbuffer, 0);
2972 emit_byte (logbuffer, 1);
2973 emit_string (logbuffer, (char*)buffer, size);
2977 g_assert_not_reached ();
2980 if (type == MONO_COUNTER_STRING && size > agent->value_size) {
2981 agent->value = g_realloc (agent->value, size);
2982 agent->value_size = size;
2986 memcpy (agent->value, buffer, size);
2990 emit_value (logbuffer, 0);
2992 EXIT_LOG_EXPLICIT (DO_SEND);
2994 mono_os_mutex_unlock (&counters_mutex);
2997 typedef struct _PerfCounterAgent PerfCounterAgent;
2998 struct _PerfCounterAgent {
2999 PerfCounterAgent *next;
3001 char *category_name;
3010 static PerfCounterAgent *perfcounters = NULL;
3013 perfcounters_emit (MonoProfiler *profiler)
3015 PerfCounterAgent *pcagent;
3018 EVENT_SIZE /* event */ +
3019 LEB128_SIZE /* len */
3022 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3023 if (pcagent->emitted)
3027 LEB128_SIZE /* section */ +
3028 strlen (pcagent->category_name) + 1 /* category name */ +
3029 strlen (pcagent->name) + 1 /* name */ +
3030 BYTE_SIZE /* type */ +
3031 BYTE_SIZE /* unit */ +
3032 BYTE_SIZE /* variance */ +
3033 LEB128_SIZE /* index */
3042 ENTER_LOG (&perfcounter_descriptors_ctr, logbuffer, size);
3044 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
3045 emit_value (logbuffer, len);
3047 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3048 if (pcagent->emitted)
3051 emit_value (logbuffer, MONO_COUNTER_PERFCOUNTERS);
3052 emit_string (logbuffer, pcagent->category_name, strlen (pcagent->category_name) + 1);
3053 emit_string (logbuffer, pcagent->name, strlen (pcagent->name) + 1);
3054 emit_byte (logbuffer, MONO_COUNTER_LONG);
3055 emit_byte (logbuffer, MONO_COUNTER_RAW);
3056 emit_byte (logbuffer, MONO_COUNTER_VARIABLE);
3057 emit_value (logbuffer, pcagent->index);
3059 pcagent->emitted = 1;
3062 EXIT_LOG_EXPLICIT (DO_SEND);
3066 perfcounters_foreach (char *category_name, char *name, unsigned char type, gint64 value, gpointer user_data)
3068 PerfCounterAgent *pcagent;
3070 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3071 if (strcmp (pcagent->category_name, category_name) != 0 || strcmp (pcagent->name, name) != 0)
3073 if (pcagent->value == value)
3076 pcagent->value = value;
3077 pcagent->updated = 1;
3078 pcagent->deleted = 0;
3082 pcagent = g_new0 (PerfCounterAgent, 1);
3083 pcagent->next = perfcounters;
3084 pcagent->index = counters_index++;
3085 pcagent->category_name = g_strdup (category_name);
3086 pcagent->name = g_strdup (name);
3087 pcagent->type = (int) type;
3088 pcagent->value = value;
3089 pcagent->emitted = 0;
3090 pcagent->updated = 1;
3091 pcagent->deleted = 0;
3093 perfcounters = pcagent;
3099 perfcounters_sample (MonoProfiler *profiler, uint64_t timestamp)
3101 PerfCounterAgent *pcagent;
3105 mono_os_mutex_lock (&counters_mutex);
3107 /* mark all perfcounters as deleted, foreach will unmark them as necessary */
3108 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next)
3109 pcagent->deleted = 1;
3111 mono_perfcounter_foreach (perfcounters_foreach, perfcounters);
3113 perfcounters_emit (profiler);
3116 EVENT_SIZE /* event */
3119 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3120 if (pcagent->deleted || !pcagent->updated)
3124 LEB128_SIZE /* index */ +
3125 BYTE_SIZE /* type */ +
3126 LEB128_SIZE /* value */
3136 LEB128_SIZE /* stop marker */
3139 ENTER_LOG (&perfcounter_samples_ctr, logbuffer, size);
3141 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
3143 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3144 if (pcagent->deleted || !pcagent->updated)
3146 emit_uvalue (logbuffer, pcagent->index);
3147 emit_byte (logbuffer, MONO_COUNTER_LONG);
3148 emit_svalue (logbuffer, pcagent->value);
3150 pcagent->updated = 0;
3153 emit_value (logbuffer, 0);
3155 EXIT_LOG_EXPLICIT (DO_SEND);
3158 mono_os_mutex_unlock (&counters_mutex);
3162 counters_and_perfcounters_sample (MonoProfiler *prof)
3164 uint64_t now = current_time ();
3166 counters_sample (prof, now);
3167 perfcounters_sample (prof, now);
3170 #define COVERAGE_DEBUG(x) if (debug_coverage) {x}
3171 static mono_mutex_t coverage_mutex;
3172 static MonoConcurrentHashTable *coverage_methods = NULL;
3173 static MonoConcurrentHashTable *coverage_assemblies = NULL;
3174 static MonoConcurrentHashTable *coverage_classes = NULL;
3176 static MonoConcurrentHashTable *filtered_classes = NULL;
3177 static MonoConcurrentHashTable *entered_methods = NULL;
3178 static MonoConcurrentHashTable *image_to_methods = NULL;
3179 static MonoConcurrentHashTable *suppressed_assemblies = NULL;
3180 static gboolean coverage_initialized = FALSE;
3182 static GPtrArray *coverage_data = NULL;
3183 static int previous_offset = 0;
3186 MonoLockFreeQueueNode node;
3199 free_coverage_entry (gpointer data, gpointer userdata)
3201 CoverageEntry *entry = (CoverageEntry *)data;
3202 g_free (entry->filename);
3207 obtain_coverage_for_method (MonoProfiler *prof, const MonoProfileCoverageEntry *entry)
3209 int offset = entry->iloffset - previous_offset;
3210 CoverageEntry *e = g_new (CoverageEntry, 1);
3212 previous_offset = entry->iloffset;
3215 e->counter = entry->counter;
3216 e->filename = g_strdup(entry->filename ? entry->filename : "");
3217 e->line = entry->line;
3218 e->column = entry->col;
3220 g_ptr_array_add (coverage_data, e);
3224 parse_generic_type_names(char *name)
3226 char *new_name, *ret;
3227 int within_generic_declaration = 0, generic_members = 1;
3229 if (name == NULL || *name == '\0')
3230 return g_strdup ("");
3232 if (!(ret = new_name = (char *) g_calloc (strlen (name) * 4 + 1, sizeof (char))))
3238 within_generic_declaration = 1;
3242 within_generic_declaration = 0;
3244 if (*(name - 1) != '<') {
3246 *new_name++ = '0' + generic_members;
3248 memcpy (new_name, "<>", 8);
3252 generic_members = 0;
3260 if (!within_generic_declaration)
3261 *new_name++ = *name;
3270 static int method_id;
3272 build_method_buffer (gpointer key, gpointer value, gpointer userdata)
3274 MonoMethod *method = (MonoMethod *)value;
3275 MonoProfiler *prof = (MonoProfiler *)userdata;
3279 const char *image_name, *method_name, *sig, *first_filename;
3282 previous_offset = 0;
3283 coverage_data = g_ptr_array_new ();
3285 mono_profiler_coverage_get (prof, method, obtain_coverage_for_method);
3287 klass = mono_method_get_class (method);
3288 image = mono_class_get_image (klass);
3289 image_name = mono_image_get_name (image);
3291 sig = mono_signature_get_desc (mono_method_signature (method), TRUE);
3292 class_name = parse_generic_type_names (mono_type_get_name (mono_class_get_type (klass)));
3293 method_name = mono_method_get_name (method);
3295 if (coverage_data->len != 0) {
3296 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[0];
3297 first_filename = entry->filename ? entry->filename : "";
3299 first_filename = "";
3301 image_name = image_name ? image_name : "";
3302 sig = sig ? sig : "";
3303 method_name = method_name ? method_name : "";
3305 ENTER_LOG (&coverage_methods_ctr, logbuffer,
3306 EVENT_SIZE /* event */ +
3307 strlen (image_name) + 1 /* image name */ +
3308 strlen (class_name) + 1 /* class name */ +
3309 strlen (method_name) + 1 /* method name */ +
3310 strlen (sig) + 1 /* signature */ +
3311 strlen (first_filename) + 1 /* first file name */ +
3312 LEB128_SIZE /* token */ +
3313 LEB128_SIZE /* method id */ +
3314 LEB128_SIZE /* entries */
3317 emit_event (logbuffer, TYPE_COVERAGE_METHOD | TYPE_COVERAGE);
3318 emit_string (logbuffer, image_name, strlen (image_name) + 1);
3319 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3320 emit_string (logbuffer, method_name, strlen (method_name) + 1);
3321 emit_string (logbuffer, sig, strlen (sig) + 1);
3322 emit_string (logbuffer, first_filename, strlen (first_filename) + 1);
3324 emit_uvalue (logbuffer, mono_method_get_token (method));
3325 emit_uvalue (logbuffer, method_id);
3326 emit_value (logbuffer, coverage_data->len);
3328 EXIT_LOG_EXPLICIT (DO_SEND);
3330 for (i = 0; i < coverage_data->len; i++) {
3331 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[i];
3333 ENTER_LOG (&coverage_statements_ctr, logbuffer,
3334 EVENT_SIZE /* event */ +
3335 LEB128_SIZE /* method id */ +
3336 LEB128_SIZE /* offset */ +
3337 LEB128_SIZE /* counter */ +
3338 LEB128_SIZE /* line */ +
3339 LEB128_SIZE /* column */
3342 emit_event (logbuffer, TYPE_COVERAGE_STATEMENT | TYPE_COVERAGE);
3343 emit_uvalue (logbuffer, method_id);
3344 emit_uvalue (logbuffer, entry->offset);
3345 emit_uvalue (logbuffer, entry->counter);
3346 emit_uvalue (logbuffer, entry->line);
3347 emit_uvalue (logbuffer, entry->column);
3349 EXIT_LOG_EXPLICIT (DO_SEND);
3354 g_free (class_name);
3356 g_ptr_array_foreach (coverage_data, free_coverage_entry, NULL);
3357 g_ptr_array_free (coverage_data, TRUE);
3358 coverage_data = NULL;
3361 /* This empties the queue */
3363 count_queue (MonoLockFreeQueue *queue)
3365 MonoLockFreeQueueNode *node;
3368 while ((node = mono_lock_free_queue_dequeue (queue))) {
3370 mono_thread_hazardous_try_free (node, g_free);
3377 build_class_buffer (gpointer key, gpointer value, gpointer userdata)
3379 MonoClass *klass = (MonoClass *)key;
3380 MonoLockFreeQueue *class_methods = (MonoLockFreeQueue *)value;
3383 const char *assembly_name;
3384 int number_of_methods, partially_covered;
3385 guint fully_covered;
3387 image = mono_class_get_image (klass);
3388 assembly_name = mono_image_get_name (image);
3389 class_name = mono_type_get_name (mono_class_get_type (klass));
3391 assembly_name = assembly_name ? assembly_name : "";
3392 number_of_methods = mono_class_num_methods (klass);
3393 fully_covered = count_queue (class_methods);
3394 /* We don't handle partial covered yet */
3395 partially_covered = 0;
3397 ENTER_LOG (&coverage_classes_ctr, logbuffer,
3398 EVENT_SIZE /* event */ +
3399 strlen (assembly_name) + 1 /* assembly name */ +
3400 strlen (class_name) + 1 /* class name */ +
3401 LEB128_SIZE /* no. methods */ +
3402 LEB128_SIZE /* fully covered */ +
3403 LEB128_SIZE /* partially covered */
3406 emit_event (logbuffer, TYPE_COVERAGE_CLASS | TYPE_COVERAGE);
3407 emit_string (logbuffer, assembly_name, strlen (assembly_name) + 1);
3408 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3409 emit_uvalue (logbuffer, number_of_methods);
3410 emit_uvalue (logbuffer, fully_covered);
3411 emit_uvalue (logbuffer, partially_covered);
3413 EXIT_LOG_EXPLICIT (DO_SEND);
3415 g_free (class_name);
3419 get_coverage_for_image (MonoImage *image, int *number_of_methods, guint *fully_covered, int *partially_covered)
3421 MonoLockFreeQueue *image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3423 *number_of_methods = mono_image_get_table_rows (image, MONO_TABLE_METHOD);
3425 *fully_covered = count_queue (image_methods);
3429 // FIXME: We don't handle partially covered yet.
3430 *partially_covered = 0;
3434 build_assembly_buffer (gpointer key, gpointer value, gpointer userdata)
3436 MonoAssembly *assembly = (MonoAssembly *)value;
3437 MonoImage *image = mono_assembly_get_image (assembly);
3438 const char *name, *guid, *filename;
3439 int number_of_methods = 0, partially_covered = 0;
3440 guint fully_covered = 0;
3442 name = mono_image_get_name (image);
3443 guid = mono_image_get_guid (image);
3444 filename = mono_image_get_filename (image);
3446 name = name ? name : "";
3447 guid = guid ? guid : "";
3448 filename = filename ? filename : "";
3450 get_coverage_for_image (image, &number_of_methods, &fully_covered, &partially_covered);
3452 ENTER_LOG (&coverage_assemblies_ctr, logbuffer,
3453 EVENT_SIZE /* event */ +
3454 strlen (name) + 1 /* name */ +
3455 strlen (guid) + 1 /* guid */ +
3456 strlen (filename) + 1 /* file name */ +
3457 LEB128_SIZE /* no. methods */ +
3458 LEB128_SIZE /* fully covered */ +
3459 LEB128_SIZE /* partially covered */
3462 emit_event (logbuffer, TYPE_COVERAGE_ASSEMBLY | TYPE_COVERAGE);
3463 emit_string (logbuffer, name, strlen (name) + 1);
3464 emit_string (logbuffer, guid, strlen (guid) + 1);
3465 emit_string (logbuffer, filename, strlen (filename) + 1);
3466 emit_uvalue (logbuffer, number_of_methods);
3467 emit_uvalue (logbuffer, fully_covered);
3468 emit_uvalue (logbuffer, partially_covered);
3470 EXIT_LOG_EXPLICIT (DO_SEND);
3474 dump_coverage (MonoProfiler *prof)
3476 if (!coverage_initialized)
3479 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Started dump\n");)
3482 mono_os_mutex_lock (&coverage_mutex);
3483 mono_conc_hashtable_foreach (coverage_assemblies, build_assembly_buffer, NULL);
3484 mono_conc_hashtable_foreach (coverage_classes, build_class_buffer, NULL);
3485 mono_conc_hashtable_foreach (coverage_methods, build_method_buffer, prof);
3486 mono_os_mutex_unlock (&coverage_mutex);
3488 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Finished dump\n");)
3492 process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method)
3497 if (!coverage_initialized)
3500 klass = mono_method_get_class (method);
3501 image = mono_class_get_image (klass);
3503 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)))
3506 mono_os_mutex_lock (&coverage_mutex);
3507 mono_conc_hashtable_insert (entered_methods, method, method);
3508 mono_os_mutex_unlock (&coverage_mutex);
3511 static MonoLockFreeQueueNode *
3512 create_method_node (MonoMethod *method)
3514 MethodNode *node = (MethodNode *) g_malloc (sizeof (MethodNode));
3515 mono_lock_free_queue_node_init ((MonoLockFreeQueueNode *) node, FALSE);
3516 node->method = method;
3518 return (MonoLockFreeQueueNode *) node;
3522 coverage_filter (MonoProfiler *prof, MonoMethod *method)
3527 MonoAssembly *assembly;
3528 MonoMethodHeader *header;
3529 guint32 iflags, flags, code_size;
3530 char *fqn, *classname;
3531 gboolean has_positive, found;
3532 MonoLockFreeQueue *image_methods, *class_methods;
3533 MonoLockFreeQueueNode *node;
3535 g_assert (coverage_initialized && "Why are we being asked for coverage filter info when we're not doing coverage?");
3537 COVERAGE_DEBUG(fprintf (stderr, "Coverage filter for %s\n", mono_method_get_name (method));)
3539 flags = mono_method_get_flags (method, &iflags);
3540 if ((iflags & 0x1000 /*METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL*/) ||
3541 (flags & 0x2000 /*METHOD_ATTRIBUTE_PINVOKE_IMPL*/)) {
3542 COVERAGE_DEBUG(fprintf (stderr, " Internal call or pinvoke - ignoring\n");)
3546 // Don't need to do anything else if we're already tracking this method
3547 if (mono_conc_hashtable_lookup (coverage_methods, method)) {
3548 COVERAGE_DEBUG(fprintf (stderr, " Already tracking\n");)
3552 klass = mono_method_get_class (method);
3553 image = mono_class_get_image (klass);
3555 // Don't handle coverage for the core assemblies
3556 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)) != NULL)
3559 if (prof->coverage_filters) {
3560 /* Check already filtered classes first */
3561 if (mono_conc_hashtable_lookup (filtered_classes, klass)) {
3562 COVERAGE_DEBUG(fprintf (stderr, " Already filtered\n");)
3566 classname = mono_type_get_name (mono_class_get_type (klass));
3568 fqn = g_strdup_printf ("[%s]%s", mono_image_get_name (image), classname);
3570 COVERAGE_DEBUG(fprintf (stderr, " Looking for %s in filter\n", fqn);)
3571 // Check positive filters first
3572 has_positive = FALSE;
3574 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3575 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3577 if (filter [0] == '+') {
3578 filter = &filter [1];
3580 COVERAGE_DEBUG(fprintf (stderr, " Checking against +%s ...", filter);)
3582 if (strstr (fqn, filter) != NULL) {
3583 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3586 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3588 has_positive = TRUE;
3592 if (has_positive && !found) {
3593 COVERAGE_DEBUG(fprintf (stderr, " Positive match was not found\n");)
3595 mono_os_mutex_lock (&coverage_mutex);
3596 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3597 mono_os_mutex_unlock (&coverage_mutex);
3604 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3605 // FIXME: Is substring search sufficient?
3606 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3607 if (filter [0] == '+')
3611 filter = &filter [1];
3612 COVERAGE_DEBUG(fprintf (stderr, " Checking against -%s ...", filter);)
3614 if (strstr (fqn, filter) != NULL) {
3615 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3617 mono_os_mutex_lock (&coverage_mutex);
3618 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3619 mono_os_mutex_unlock (&coverage_mutex);
3625 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3633 COVERAGE_DEBUG(fprintf (stderr, " Handling coverage for %s\n", mono_method_get_name (method));)
3634 header = mono_method_get_header_checked (method, &error);
3635 mono_error_cleanup (&error);
3637 mono_method_header_get_code (header, &code_size, NULL);
3639 assembly = mono_image_get_assembly (image);
3641 // Need to keep the assemblies around for as long as they are kept in the hashtable
3642 // Nunit, for example, has a habit of unloading them before the coverage statistics are
3643 // generated causing a crash. See https://bugzilla.xamarin.com/show_bug.cgi?id=39325
3644 mono_assembly_addref (assembly);
3646 mono_os_mutex_lock (&coverage_mutex);
3647 mono_conc_hashtable_insert (coverage_methods, method, method);
3648 mono_conc_hashtable_insert (coverage_assemblies, assembly, assembly);
3649 mono_os_mutex_unlock (&coverage_mutex);
3651 image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3653 if (image_methods == NULL) {
3654 image_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3655 mono_lock_free_queue_init (image_methods);
3656 mono_os_mutex_lock (&coverage_mutex);
3657 mono_conc_hashtable_insert (image_to_methods, image, image_methods);
3658 mono_os_mutex_unlock (&coverage_mutex);
3661 node = create_method_node (method);
3662 mono_lock_free_queue_enqueue (image_methods, node);
3664 class_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (coverage_classes, klass);
3666 if (class_methods == NULL) {
3667 class_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3668 mono_lock_free_queue_init (class_methods);
3669 mono_os_mutex_lock (&coverage_mutex);
3670 mono_conc_hashtable_insert (coverage_classes, klass, class_methods);
3671 mono_os_mutex_unlock (&coverage_mutex);
3674 node = create_method_node (method);
3675 mono_lock_free_queue_enqueue (class_methods, node);
3680 #define LINE_BUFFER_SIZE 4096
3681 /* Max file limit of 128KB */
3682 #define MAX_FILE_SIZE 128 * 1024
3684 get_file_content (FILE *stream)
3689 int res, offset = 0;
3691 res = fseek (stream, 0, SEEK_END);
3695 filesize = ftell (stream);
3699 res = fseek (stream, 0, SEEK_SET);
3703 if (filesize > MAX_FILE_SIZE)
3706 buffer = (char *) g_malloc ((filesize + 1) * sizeof (char));
3707 while ((bytes_read = fread (buffer + offset, 1, LINE_BUFFER_SIZE, stream)) > 0)
3708 offset += bytes_read;
3710 /* NULL terminate our buffer */
3711 buffer[filesize] = '\0';
3716 get_next_line (char *contents, char **next_start)
3720 if (p == NULL || *p == '\0') {
3725 while (*p != '\n' && *p != '\0')
3730 *next_start = p + 1;
3738 init_suppressed_assemblies (void)
3744 suppressed_assemblies = mono_conc_hashtable_new (g_str_hash, g_str_equal);
3745 sa_file = fopen (SUPPRESSION_DIR "/mono-profiler-log.suppression", "r");
3746 if (sa_file == NULL)
3749 /* Don't need to free @content as it is referred to by the lines stored in @suppressed_assemblies */
3750 content = get_file_content (sa_file);
3751 if (content == NULL) {
3752 g_error ("mono-profiler-log.suppression is greater than 128kb - aborting\n");
3755 while ((line = get_next_line (content, &content))) {
3756 line = g_strchomp (g_strchug (line));
3757 /* No locking needed as we're doing initialization */
3758 mono_conc_hashtable_insert (suppressed_assemblies, line, line);
3765 parse_cov_filter_file (GPtrArray *filters, const char *file)
3768 char *line, *content;
3770 filter_file = fopen (file, "r");
3771 if (filter_file == NULL) {
3772 fprintf (stderr, "Unable to open %s\n", file);
3776 /* Don't need to free content as it is referred to by the lines stored in @filters */
3777 content = get_file_content (filter_file);
3778 if (content == NULL)
3779 fprintf (stderr, "WARNING: %s is greater than 128kb - ignoring\n", file);
3781 while ((line = get_next_line (content, &content)))
3782 g_ptr_array_add (filters, g_strchug (g_strchomp (line)));
3784 fclose (filter_file);
3788 coverage_init (MonoProfiler *prof)
3790 g_assert (!coverage_initialized && "Why are we initializing coverage twice?");
3792 COVERAGE_DEBUG(fprintf (stderr, "Coverage initialized\n");)
3794 mono_os_mutex_init (&coverage_mutex);
3795 coverage_methods = mono_conc_hashtable_new (NULL, NULL);
3796 coverage_assemblies = mono_conc_hashtable_new (NULL, NULL);
3797 coverage_classes = mono_conc_hashtable_new (NULL, NULL);
3798 filtered_classes = mono_conc_hashtable_new (NULL, NULL);
3799 entered_methods = mono_conc_hashtable_new (NULL, NULL);
3800 image_to_methods = mono_conc_hashtable_new (NULL, NULL);
3801 init_suppressed_assemblies ();
3803 coverage_initialized = TRUE;
3807 unref_coverage_assemblies (gpointer key, gpointer value, gpointer userdata)
3809 MonoAssembly *assembly = (MonoAssembly *)value;
3810 mono_assembly_close (assembly);
3814 free_sample_hit (gpointer p)
3816 mono_lock_free_free (p, SAMPLE_BLOCK_SIZE);
3820 cleanup_reusable_samples (MonoProfiler *prof)
3824 while ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->sample_reuse_queue)))
3825 mono_thread_hazardous_try_free (sample, free_sample_hit);
3829 log_shutdown (MonoProfiler *prof)
3831 InterlockedWrite (&in_shutdown, 1);
3834 counters_and_perfcounters_sample (prof);
3836 dump_coverage (prof);
3840 if (write (prof->pipes [1], &c, 1) != 1) {
3841 fprintf (stderr, "Could not write to pipe: %s\n", strerror (errno));
3845 mono_native_thread_join (prof->helper_thread);
3847 mono_os_mutex_destroy (&counters_mutex);
3849 MonoCounterAgent *mc_next;
3851 for (MonoCounterAgent *cur = counters; cur; cur = mc_next) {
3852 mc_next = cur->next;
3856 PerfCounterAgent *pc_next;
3858 for (PerfCounterAgent *cur = perfcounters; cur; cur = pc_next) {
3859 pc_next = cur->next;
3864 * Ensure that we empty the LLS completely, even if some nodes are
3865 * not immediately removed upon calling mono_lls_remove (), by
3866 * iterating until the head is NULL.
3868 while (profiler_thread_list.head) {
3869 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
3870 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
3872 remove_thread (thread);
3873 } MONO_LLS_FOREACH_SAFE_END
3877 * Ensure that all threads have been freed, so that we don't miss any
3878 * buffers when we shut down the writer thread below.
3880 mono_thread_hazardous_try_free_all ();
3882 InterlockedWrite (&prof->run_dumper_thread, 0);
3883 mono_os_sem_post (&prof->dumper_queue_sem);
3884 mono_native_thread_join (prof->dumper_thread);
3885 mono_os_sem_destroy (&prof->dumper_queue_sem);
3887 InterlockedWrite (&prof->run_writer_thread, 0);
3888 mono_os_sem_post (&prof->writer_queue_sem);
3889 mono_native_thread_join (prof->writer_thread);
3890 mono_os_sem_destroy (&prof->writer_queue_sem);
3893 * Free all writer queue entries, and ensure that all sample hits will be
3894 * added to the sample reuse queue.
3896 mono_thread_hazardous_try_free_all ();
3898 cleanup_reusable_samples (prof);
3901 * Finally, make sure that all sample hits are freed. This should cover all
3902 * hazardous data from the profiler. We can now be sure that the runtime
3903 * won't later invoke free functions in the profiler library after it has
3906 mono_thread_hazardous_try_free_all ();
3908 g_assert (!InterlockedRead (&buffer_rwlock_count) && "Why is the reader count still non-zero?");
3909 g_assert (!InterlockedReadPointer (&buffer_rwlock_exclusive) && "Why does someone still hold the exclusive lock?");
3911 #if defined (HAVE_SYS_ZLIB)
3913 gzclose (prof->gzfile);
3915 if (prof->pipe_output)
3916 pclose (prof->file);
3918 fclose (prof->file);
3920 mono_conc_hashtable_destroy (prof->method_table);
3921 mono_os_mutex_destroy (&prof->method_table_mutex);
3923 if (coverage_initialized) {
3924 mono_os_mutex_lock (&coverage_mutex);
3925 mono_conc_hashtable_foreach (coverage_assemblies, unref_coverage_assemblies, prof);
3926 mono_os_mutex_unlock (&coverage_mutex);
3928 mono_conc_hashtable_destroy (coverage_methods);
3929 mono_conc_hashtable_destroy (coverage_assemblies);
3930 mono_conc_hashtable_destroy (coverage_classes);
3931 mono_conc_hashtable_destroy (filtered_classes);
3933 mono_conc_hashtable_destroy (entered_methods);
3934 mono_conc_hashtable_destroy (image_to_methods);
3935 mono_conc_hashtable_destroy (suppressed_assemblies);
3936 mono_os_mutex_destroy (&coverage_mutex);
3941 g_free (prof->args);
3946 new_filename (const char* filename)
3948 time_t t = time (NULL);
3949 int pid = process_id ();
3954 int count_dates = 0;
3958 for (p = filename; *p; p++) {
3969 if (!count_dates && !count_pids)
3970 return pstrdup (filename);
3971 snprintf (pid_buf, sizeof (pid_buf), "%d", pid);
3973 snprintf (time_buf, sizeof (time_buf), "%d%02d%02d%02d%02d%02d",
3974 1900 + ts->tm_year, 1 + ts->tm_mon, ts->tm_mday, ts->tm_hour, ts->tm_min, ts->tm_sec);
3975 s_date = strlen (time_buf);
3976 s_pid = strlen (pid_buf);
3977 d = res = (char *) g_malloc (strlen (filename) + s_date * count_dates + s_pid * count_pids);
3978 for (p = filename; *p; p++) {
3985 strcpy (d, time_buf);
3988 } else if (*p == 'p') {
3989 strcpy (d, pid_buf);
3992 } else if (*p == '%') {
4005 add_to_fd_set (fd_set *set, int fd, int *max_fd)
4008 * This should only trigger for the basic FDs (server socket, pipes) at
4009 * startup if for some mysterious reason they're too large. In this case,
4010 * the profiler really can't function, and we're better off printing an
4011 * error and exiting.
4013 if (fd >= FD_SETSIZE) {
4014 fprintf (stderr, "File descriptor is out of bounds for fd_set: %d\n", fd);
4025 helper_thread (void *arg)
4027 MonoProfiler *prof = (MonoProfiler *) arg;
4029 mono_threads_attach_tools_thread ();
4030 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler helper");
4032 MonoProfilerThread *thread = init_thread (prof, FALSE);
4034 GArray *command_sockets = g_array_new (FALSE, FALSE, sizeof (int));
4042 add_to_fd_set (&rfds, prof->server_socket, &max_fd);
4043 add_to_fd_set (&rfds, prof->pipes [0], &max_fd);
4045 for (gint i = 0; i < command_sockets->len; i++)
4046 add_to_fd_set (&rfds, g_array_index (command_sockets, int, i), &max_fd);
4048 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
4050 // Sleep for 1sec or until a file descriptor has data.
4051 if (select (max_fd + 1, &rfds, NULL, NULL, &tv) == -1) {
4055 fprintf (stderr, "Error in mono-profiler-log server: %s", strerror (errno));
4060 counters_and_perfcounters_sample (prof);
4062 buffer_lock_excl ();
4064 sync_point (SYNC_POINT_PERIODIC);
4066 buffer_unlock_excl ();
4068 // Are we shutting down?
4069 if (FD_ISSET (prof->pipes [0], &rfds)) {
4071 read (prof->pipes [0], &c, 1);
4075 for (gint i = 0; i < command_sockets->len; i++) {
4076 int fd = g_array_index (command_sockets, int, i);
4078 if (!FD_ISSET (fd, &rfds))
4082 int len = read (fd, buf, sizeof (buf) - 1);
4088 // The other end disconnected.
4089 g_array_remove_index (command_sockets, i);
4097 if (!strcmp (buf, "heapshot\n") && hs_mode_ondemand) {
4098 // Rely on the finalization callback triggering a GC.
4099 heapshot_requested = 1;
4100 mono_gc_finalize_notify ();
4104 if (FD_ISSET (prof->server_socket, &rfds)) {
4105 int fd = accept (prof->server_socket, NULL, NULL);
4108 if (fd >= FD_SETSIZE)
4111 g_array_append_val (command_sockets, fd);
4116 for (gint i = 0; i < command_sockets->len; i++)
4117 close (g_array_index (command_sockets, int, i));
4119 g_array_free (command_sockets, TRUE);
4121 send_log_unsafe (FALSE);
4122 deinit_thread (thread);
4124 mono_thread_info_detach ();
4130 start_helper_thread (MonoProfiler* prof)
4132 if (pipe (prof->pipes) == -1) {
4133 fprintf (stderr, "Cannot create pipe: %s\n", strerror (errno));
4137 prof->server_socket = socket (PF_INET, SOCK_STREAM, 0);
4139 if (prof->server_socket == -1) {
4140 fprintf (stderr, "Cannot create server socket: %s\n", strerror (errno));
4144 struct sockaddr_in server_address;
4146 memset (&server_address, 0, sizeof (server_address));
4147 server_address.sin_family = AF_INET;
4148 server_address.sin_addr.s_addr = INADDR_ANY;
4149 server_address.sin_port = htons (prof->command_port);
4151 if (bind (prof->server_socket, (struct sockaddr *) &server_address, sizeof (server_address)) == -1) {
4152 fprintf (stderr, "Cannot bind server socket on port %d: %s\n", prof->command_port, strerror (errno));
4153 close (prof->server_socket);
4157 if (listen (prof->server_socket, 1) == -1) {
4158 fprintf (stderr, "Cannot listen on server socket: %s\n", strerror (errno));
4159 close (prof->server_socket);
4163 socklen_t slen = sizeof (server_address);
4165 if (getsockname (prof->server_socket, (struct sockaddr *) &server_address, &slen)) {
4166 fprintf (stderr, "Could not get assigned port: %s\n", strerror (errno));
4167 close (prof->server_socket);
4171 prof->command_port = ntohs (server_address.sin_port);
4173 if (!mono_native_thread_create (&prof->helper_thread, helper_thread, prof)) {
4174 fprintf (stderr, "Could not start helper thread\n");
4175 close (prof->server_socket);
4181 free_writer_entry (gpointer p)
4183 mono_lock_free_free (p, WRITER_ENTRY_BLOCK_SIZE);
4187 handle_writer_queue_entry (MonoProfiler *prof)
4189 WriterQueueEntry *entry;
4191 if ((entry = (WriterQueueEntry *) mono_lock_free_queue_dequeue (&prof->writer_queue))) {
4192 if (!entry->methods)
4195 gboolean wrote_methods = FALSE;
4198 * Encode the method events in a temporary log buffer that we
4199 * flush to disk before the main buffer, ensuring that all
4200 * methods have metadata emitted before they're referenced.
4202 * We use a 'proper' thread-local buffer for this as opposed
4203 * to allocating and freeing a buffer by hand because the call
4204 * to mono_method_full_name () below may trigger class load
4205 * events when it retrieves the signature of the method. So a
4206 * thread-local buffer needs to exist when such events occur.
4208 for (guint i = 0; i < entry->methods->len; i++) {
4209 MethodInfo *info = (MethodInfo *) g_ptr_array_index (entry->methods, i);
4211 if (mono_conc_hashtable_lookup (prof->method_table, info->method))
4212 goto free_info; // This method already has metadata emitted.
4215 * Other threads use this hash table to get a general
4216 * idea of whether a method has already been emitted to
4217 * the stream. Due to the way we add to this table, it
4218 * can easily happen that multiple threads queue up the
4219 * same methods, but that's OK since eventually all
4220 * methods will be in this table and the thread-local
4221 * method lists will just be empty for the rest of the
4224 mono_os_mutex_lock (&prof->method_table_mutex);
4225 mono_conc_hashtable_insert (prof->method_table, info->method, info->method);
4226 mono_os_mutex_unlock (&prof->method_table_mutex);
4228 char *name = mono_method_full_name (info->method, 1);
4229 int nlen = strlen (name) + 1;
4230 void *cstart = info->ji ? mono_jit_info_get_code_start (info->ji) : NULL;
4231 int csize = info->ji ? mono_jit_info_get_code_size (info->ji) : 0;
4233 ENTER_LOG (&method_jits_ctr, logbuffer,
4234 EVENT_SIZE /* event */ +
4235 LEB128_SIZE /* method */ +
4236 LEB128_SIZE /* start */ +
4237 LEB128_SIZE /* size */ +
4241 emit_event_time (logbuffer, TYPE_JIT | TYPE_METHOD, info->time);
4242 emit_method_inner (logbuffer, info->method);
4243 emit_ptr (logbuffer, cstart);
4244 emit_value (logbuffer, csize);
4246 memcpy (logbuffer->cursor, name, nlen);
4247 logbuffer->cursor += nlen;
4249 EXIT_LOG_EXPLICIT (NO_SEND);
4253 wrote_methods = TRUE;
4259 g_ptr_array_free (entry->methods, TRUE);
4261 if (wrote_methods) {
4262 dump_buffer_threadless (prof, PROF_TLS_GET ()->buffer);
4263 init_buffer_state (PROF_TLS_GET ());
4267 dump_buffer (prof, entry->buffer);
4269 mono_thread_hazardous_try_free (entry, free_writer_entry);
4278 writer_thread (void *arg)
4280 MonoProfiler *prof = (MonoProfiler *)arg;
4282 mono_threads_attach_tools_thread ();
4283 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler writer");
4287 MonoProfilerThread *thread = init_thread (prof, FALSE);
4289 while (InterlockedRead (&prof->run_writer_thread)) {
4290 mono_os_sem_wait (&prof->writer_queue_sem, MONO_SEM_FLAGS_NONE);
4291 handle_writer_queue_entry (prof);
4294 /* Drain any remaining entries on shutdown. */
4295 while (handle_writer_queue_entry (prof));
4297 free_buffer (thread->buffer, thread->buffer->size);
4298 deinit_thread (thread);
4300 mono_thread_info_detach ();
4306 start_writer_thread (MonoProfiler* prof)
4308 InterlockedWrite (&prof->run_writer_thread, 1);
4310 if (!mono_native_thread_create (&prof->writer_thread, writer_thread, prof)) {
4311 fprintf (stderr, "Could not start writer thread\n");
4317 reuse_sample_hit (gpointer p)
4319 SampleHit *sample = p;
4321 mono_lock_free_queue_node_unpoison (&sample->node);
4322 mono_lock_free_queue_enqueue (&sample->prof->sample_reuse_queue, &sample->node);
4326 handle_dumper_queue_entry (MonoProfiler *prof)
4330 if ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->dumper_queue))) {
4331 for (int i = 0; i < sample->count; ++i) {
4332 MonoMethod *method = sample->frames [i].method;
4333 MonoDomain *domain = sample->frames [i].domain;
4334 void *address = sample->frames [i].base_address;
4337 g_assert (domain && "What happened to the domain pointer?");
4338 g_assert (address && "What happened to the instruction pointer?");
4340 MonoJitInfo *ji = mono_jit_info_table_find (domain, (char *) address);
4343 sample->frames [i].method = mono_jit_info_get_method (ji);
4347 ENTER_LOG (&sample_hits_ctr, logbuffer,
4348 EVENT_SIZE /* event */ +
4349 BYTE_SIZE /* type */ +
4350 LEB128_SIZE /* tid */ +
4351 LEB128_SIZE /* count */ +
4353 LEB128_SIZE /* ip */
4355 LEB128_SIZE /* managed count */ +
4357 LEB128_SIZE /* method */
4361 emit_event_time (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_HIT, sample->time);
4362 emit_byte (logbuffer, SAMPLE_CYCLES);
4363 emit_ptr (logbuffer, (void *) sample->tid);
4364 emit_value (logbuffer, 1);
4366 // TODO: Actual native unwinding.
4367 for (int i = 0; i < 1; ++i) {
4368 emit_ptr (logbuffer, sample->ip);
4369 add_code_pointer ((uintptr_t) sample->ip);
4372 /* new in data version 6 */
4373 emit_uvalue (logbuffer, sample->count);
4375 for (int i = 0; i < sample->count; ++i)
4376 emit_method (logbuffer, sample->frames [i].method);
4378 EXIT_LOG_EXPLICIT (DO_SEND);
4380 mono_thread_hazardous_try_free (sample, reuse_sample_hit);
4382 dump_unmanaged_coderefs (prof);
4389 dumper_thread (void *arg)
4391 MonoProfiler *prof = (MonoProfiler *)arg;
4393 mono_threads_attach_tools_thread ();
4394 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler dumper");
4396 MonoProfilerThread *thread = init_thread (prof, FALSE);
4398 while (InterlockedRead (&prof->run_dumper_thread)) {
4400 * Flush samples every second so it doesn't seem like the profiler is
4401 * not working if the program is mostly idle.
4403 if (mono_os_sem_timedwait (&prof->dumper_queue_sem, 1000, MONO_SEM_FLAGS_NONE) == MONO_SEM_TIMEDWAIT_RET_TIMEDOUT)
4404 send_log_unsafe (FALSE);
4406 handle_dumper_queue_entry (prof);
4409 /* Drain any remaining entries on shutdown. */
4410 while (handle_dumper_queue_entry (prof));
4412 send_log_unsafe (FALSE);
4413 deinit_thread (thread);
4415 mono_thread_info_detach ();
4421 start_dumper_thread (MonoProfiler* prof)
4423 InterlockedWrite (&prof->run_dumper_thread, 1);
4425 if (!mono_native_thread_create (&prof->dumper_thread, dumper_thread, prof)) {
4426 fprintf (stderr, "Could not start dumper thread\n");
4432 register_counter (const char *name, gint32 *counter)
4434 mono_counters_register (name, MONO_COUNTER_UINT | MONO_COUNTER_PROFILER | MONO_COUNTER_MONOTONIC, counter);
4438 runtime_initialized (MonoProfiler *profiler)
4440 InterlockedWrite (&runtime_inited, 1);
4442 register_counter ("Sample events allocated", &sample_allocations_ctr);
4443 register_counter ("Log buffers allocated", &buffer_allocations_ctr);
4445 register_counter ("Event: Sync points", &sync_points_ctr);
4446 register_counter ("Event: Heap objects", &heap_objects_ctr);
4447 register_counter ("Event: Heap starts", &heap_starts_ctr);
4448 register_counter ("Event: Heap ends", &heap_ends_ctr);
4449 register_counter ("Event: Heap roots", &heap_roots_ctr);
4450 register_counter ("Event: GC events", &gc_events_ctr);
4451 register_counter ("Event: GC resizes", &gc_resizes_ctr);
4452 register_counter ("Event: GC allocations", &gc_allocs_ctr);
4453 register_counter ("Event: GC moves", &gc_moves_ctr);
4454 register_counter ("Event: GC handle creations", &gc_handle_creations_ctr);
4455 register_counter ("Event: GC handle deletions", &gc_handle_deletions_ctr);
4456 register_counter ("Event: GC finalize starts", &finalize_begins_ctr);
4457 register_counter ("Event: GC finalize ends", &finalize_ends_ctr);
4458 register_counter ("Event: GC finalize object starts", &finalize_object_begins_ctr);
4459 register_counter ("Event: GC finalize object ends", &finalize_object_ends_ctr);
4460 register_counter ("Event: Image loads", &image_loads_ctr);
4461 register_counter ("Event: Image unloads", &image_unloads_ctr);
4462 register_counter ("Event: Assembly loads", &assembly_loads_ctr);
4463 register_counter ("Event: Assembly unloads", &assembly_unloads_ctr);
4464 register_counter ("Event: Class loads", &class_loads_ctr);
4465 register_counter ("Event: Class unloads", &class_unloads_ctr);
4466 register_counter ("Event: Method entries", &method_entries_ctr);
4467 register_counter ("Event: Method exits", &method_exits_ctr);
4468 register_counter ("Event: Method exception leaves", &method_exception_exits_ctr);
4469 register_counter ("Event: Method JITs", &method_jits_ctr);
4470 register_counter ("Event: Code buffers", &code_buffers_ctr);
4471 register_counter ("Event: Exception throws", &exception_throws_ctr);
4472 register_counter ("Event: Exception clauses", &exception_clauses_ctr);
4473 register_counter ("Event: Monitor events", &monitor_events_ctr);
4474 register_counter ("Event: Thread starts", &thread_starts_ctr);
4475 register_counter ("Event: Thread ends", &thread_ends_ctr);
4476 register_counter ("Event: Thread names", &thread_names_ctr);
4477 register_counter ("Event: Domain loads", &domain_loads_ctr);
4478 register_counter ("Event: Domain unloads", &domain_unloads_ctr);
4479 register_counter ("Event: Domain names", &domain_names_ctr);
4480 register_counter ("Event: Context loads", &context_loads_ctr);
4481 register_counter ("Event: Context unloads", &context_unloads_ctr);
4482 register_counter ("Event: Sample binaries", &sample_ubins_ctr);
4483 register_counter ("Event: Sample symbols", &sample_usyms_ctr);
4484 register_counter ("Event: Sample hits", &sample_hits_ctr);
4485 register_counter ("Event: Counter descriptors", &counter_descriptors_ctr);
4486 register_counter ("Event: Counter samples", &counter_samples_ctr);
4487 register_counter ("Event: Performance counter descriptors", &perfcounter_descriptors_ctr);
4488 register_counter ("Event: Performance counter samples", &perfcounter_samples_ctr);
4489 register_counter ("Event: Coverage methods", &coverage_methods_ctr);
4490 register_counter ("Event: Coverage statements", &coverage_statements_ctr);
4491 register_counter ("Event: Coverage classes", &coverage_classes_ctr);
4492 register_counter ("Event: Coverage assemblies", &coverage_assemblies_ctr);
4494 counters_init (profiler);
4497 * We must start the helper thread before the writer thread. This is
4498 * because the helper thread sets up the command port which is written to
4499 * the log header by the writer thread.
4501 start_helper_thread (profiler);
4502 start_writer_thread (profiler);
4503 start_dumper_thread (profiler);
4506 static MonoProfiler*
4507 create_profiler (const char *args, const char *filename, GPtrArray *filters)
4511 int force_delete = 0;
4512 prof = (MonoProfiler *) g_calloc (1, sizeof (MonoProfiler));
4514 prof->args = pstrdup (args);
4515 prof->command_port = command_port;
4516 if (filename && *filename == '-') {
4519 g_warning ("WARNING: the output:-FILENAME option is deprecated, the profiler now always overrides the output file\n");
4522 //If filename begin with +, append the pid at the end
4523 if (filename && *filename == '+')
4524 filename = g_strdup_printf ("%s.%d", filename + 1, getpid ());
4529 filename = "|mprof-report -";
4531 filename = "output.mlpd";
4532 nf = (char*)filename;
4534 nf = new_filename (filename);
4536 int s = strlen (nf) + 32;
4537 char *p = (char *) g_malloc (s);
4538 snprintf (p, s, "|mprof-report '--out=%s' -", nf);
4544 prof->file = popen (nf + 1, "w");
4545 prof->pipe_output = 1;
4546 } else if (*nf == '#') {
4547 int fd = strtol (nf + 1, NULL, 10);
4548 prof->file = fdopen (fd, "a");
4552 prof->file = fopen (nf, "wb");
4555 fprintf (stderr, "Cannot create profiler output: %s\n", nf);
4559 #if defined (HAVE_SYS_ZLIB)
4561 prof->gzfile = gzdopen (fileno (prof->file), "wb");
4565 * If you hit this assert while increasing MAX_FRAMES, you need to increase
4566 * SAMPLE_BLOCK_SIZE as well.
4568 g_assert (SAMPLE_SLOT_SIZE (MAX_FRAMES) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (SAMPLE_BLOCK_SIZE));
4570 // FIXME: We should free this stuff too.
4571 mono_lock_free_allocator_init_size_class (&prof->sample_size_class, SAMPLE_SLOT_SIZE (num_frames), SAMPLE_BLOCK_SIZE);
4572 mono_lock_free_allocator_init_allocator (&prof->sample_allocator, &prof->sample_size_class, MONO_MEM_ACCOUNT_PROFILER);
4574 mono_lock_free_queue_init (&prof->sample_reuse_queue);
4576 g_assert (sizeof (WriterQueueEntry) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (WRITER_ENTRY_BLOCK_SIZE));
4578 // FIXME: We should free this stuff too.
4579 mono_lock_free_allocator_init_size_class (&prof->writer_entry_size_class, sizeof (WriterQueueEntry), WRITER_ENTRY_BLOCK_SIZE);
4580 mono_lock_free_allocator_init_allocator (&prof->writer_entry_allocator, &prof->writer_entry_size_class, MONO_MEM_ACCOUNT_PROFILER);
4582 mono_lock_free_queue_init (&prof->writer_queue);
4583 mono_os_sem_init (&prof->writer_queue_sem, 0);
4585 mono_lock_free_queue_init (&prof->dumper_queue);
4586 mono_os_sem_init (&prof->dumper_queue_sem, 0);
4588 mono_os_mutex_init (&prof->method_table_mutex);
4589 prof->method_table = mono_conc_hashtable_new (NULL, NULL);
4592 coverage_init (prof);
4593 prof->coverage_filters = filters;
4595 prof->startup_time = current_time ();
4600 * declaration to silence the compiler: this is the entry point that
4601 * mono will load from the shared library and call.
4604 mono_profiler_startup (const char *desc);
4607 mono_profiler_startup_log (const char *desc);
4610 * this is the entry point that will be used when the profiler
4611 * is embedded inside the main executable.
4614 mono_profiler_startup_log (const char *desc)
4616 mono_profiler_startup (desc);
4620 mono_profiler_startup (const char *desc)
4622 GPtrArray *filters = NULL;
4625 proflog_parse_args (&config, desc [3] == ':' ? desc + 4 : "");
4627 //XXX maybe later cleanup to use config directly
4628 nocalls = !(config.effective_mask & PROFLOG_CALL_EVENTS);
4629 no_counters = !(config.effective_mask & PROFLOG_COUNTER_EVENTS);
4630 do_report = config.do_report;
4631 do_debug = config.do_debug;
4632 do_heap_shot = (config.effective_mask & PROFLOG_HEAPSHOT_FEATURE);
4633 hs_mode_ondemand = config.hs_mode_ondemand;
4634 hs_mode_ms = config.hs_mode_ms;
4635 hs_mode_gc = config.hs_mode_gc;
4636 do_mono_sample = (config.effective_mask & PROFLOG_SAMPLING_FEATURE);
4637 use_zip = config.use_zip;
4638 command_port = config.command_port;
4639 num_frames = config.num_frames;
4640 notraces = config.notraces;
4641 max_allocated_sample_hits = config.max_allocated_sample_hits;
4642 max_call_depth = config.max_call_depth;
4643 do_coverage = (config.effective_mask & PROFLOG_CODE_COV_FEATURE);
4644 debug_coverage = config.debug_coverage;
4645 only_coverage = config.only_coverage;
4647 if (config.cov_filter_files) {
4648 filters = g_ptr_array_new ();
4650 for (i = 0; i < config.cov_filter_files->len; ++i) {
4651 const char *name = config.cov_filter_files->pdata [i];
4652 parse_cov_filter_file (filters, name);
4660 prof = create_profiler (desc, config.output_filename, filters);
4666 mono_lls_init (&profiler_thread_list, NULL);
4668 init_thread (prof, TRUE);
4670 //This two events are required for the profiler to work
4671 int events = MONO_PROFILE_THREADS | MONO_PROFILE_GC;
4673 //Required callbacks
4674 mono_profiler_install (prof, log_shutdown);
4675 mono_profiler_install_runtime_initialized (runtime_initialized);
4677 mono_profiler_install_gc (gc_event, gc_resize);
4678 mono_profiler_install_thread (thread_start, thread_end);
4680 //It's questionable whether we actually want this to be mandatory, maybe put it behind the actual event?
4681 mono_profiler_install_thread_name (thread_name);
4684 if (config.effective_mask & PROFLOG_DOMAIN_EVENTS) {
4685 events |= MONO_PROFILE_APPDOMAIN_EVENTS;
4686 mono_profiler_install_appdomain (NULL, domain_loaded, domain_unloaded, NULL);
4687 mono_profiler_install_appdomain_name (domain_name);
4690 if (config.effective_mask & PROFLOG_ASSEMBLY_EVENTS) {
4691 events |= MONO_PROFILE_ASSEMBLY_EVENTS;
4692 mono_profiler_install_assembly (NULL, assembly_loaded, assembly_unloaded, NULL);
4695 if (config.effective_mask & PROFLOG_MODULE_EVENTS) {
4696 events |= MONO_PROFILE_MODULE_EVENTS;
4697 mono_profiler_install_module (NULL, image_loaded, image_unloaded, NULL);
4700 if (config.effective_mask & PROFLOG_CLASS_EVENTS) {
4701 events |= MONO_PROFILE_CLASS_EVENTS;
4702 mono_profiler_install_class (NULL, class_loaded, class_unloaded, NULL);
4705 if (config.effective_mask & PROFLOG_JIT_COMPILATION_EVENTS) {
4706 events |= MONO_PROFILE_JIT_COMPILATION;
4707 mono_profiler_install_jit_end (method_jitted);
4708 mono_profiler_install_code_buffer_new (code_buffer_new);
4711 if (config.effective_mask & PROFLOG_EXCEPTION_EVENTS) {
4712 events |= MONO_PROFILE_EXCEPTIONS;
4713 mono_profiler_install_exception (throw_exc, method_exc_leave, NULL);
4714 mono_profiler_install_exception_clause (clause_exc);
4717 if (config.effective_mask & PROFLOG_ALLOCATION_EVENTS) {
4718 events |= MONO_PROFILE_ALLOCATIONS;
4719 mono_profiler_install_allocation (gc_alloc);
4722 //PROFLOG_GC_EVENTS is mandatory
4723 //PROFLOG_THREAD_EVENTS is mandatory
4725 if (config.effective_mask & PROFLOG_CALL_EVENTS) {
4726 events |= MONO_PROFILE_ENTER_LEAVE;
4727 mono_profiler_install_enter_leave (method_enter, method_leave);
4730 if (config.effective_mask & PROFLOG_INS_COVERAGE_EVENTS) {
4731 events |= MONO_PROFILE_INS_COVERAGE;
4732 mono_profiler_install_coverage_filter (coverage_filter);
4735 //XXX should we check for PROFLOG_SAMPLING_FEATURE instead??
4736 if (config.effective_mask & PROFLOG_SAMPLING_EVENTS) {
4737 events |= MONO_PROFILE_STATISTICAL;
4738 mono_profiler_set_statistical_mode (config.sampling_mode, config.sample_freq);
4739 mono_profiler_install_statistical (mono_sample_hit);
4742 if (config.effective_mask & PROFLOG_MONITOR_EVENTS) {
4743 events |= MONO_PROFILE_MONITOR_EVENTS;
4744 mono_profiler_install_monitor (monitor_event);
4747 if (config.effective_mask & PROFLOG_GC_MOVES_EVENTS) {
4748 events |= MONO_PROFILE_GC_MOVES;
4749 mono_profiler_install_gc_moves (gc_moves);
4752 // TODO split those in two profiler events
4753 if (config.effective_mask & (PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_HANDLE_EVENTS)) {
4754 events |= MONO_PROFILE_GC_ROOTS;
4755 mono_profiler_install_gc_roots (
4756 config.effective_mask & (PROFLOG_GC_HANDLE_EVENTS) ? gc_handle : NULL,
4757 (config.effective_mask & PROFLOG_GC_ROOT_EVENTS) ? gc_roots : NULL);
4760 if (config.effective_mask & PROFLOG_CONTEXT_EVENTS) {
4761 events |= MONO_PROFILE_CONTEXT_EVENTS;
4762 mono_profiler_install_context (context_loaded, context_unloaded);
4765 if (config.effective_mask & PROFLOG_FINALIZATION_EVENTS) {
4766 events |= MONO_PROFILE_GC_FINALIZATION;
4767 mono_profiler_install_gc_finalize (finalize_begin, finalize_object_begin, finalize_object_end, finalize_end);
4768 } else if (ENABLED (PROFLOG_HEAPSHOT_FEATURE) && config.hs_mode_ondemand) {
4769 //On Demand heapshot uses the finalizer thread to force a collection and thus a heapshot
4770 events |= MONO_PROFILE_GC_FINALIZATION;
4771 mono_profiler_install_gc_finalize (NULL, NULL, NULL, finalize_end);
4774 //PROFLOG_COUNTER_EVENTS is a pseudo event controled by the no_counters global var
4775 //PROFLOG_GC_HANDLE_EVENTS is handled together with PROFLOG_GC_ROOT_EVENTS
4777 mono_profiler_set_events ((MonoProfileFlags)events);