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>
33 #include "mono-profiler-log.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 #ifdef HAVE_SCHED_GETAFFINITY
58 # ifndef GLIBC_HAS_CPU_COUNT
60 CPU_COUNT(cpu_set_t *set)
64 for (int i = 0; i < CPU_SETSIZE; i++)
65 if (CPU_ISSET(i, set))
72 #define BUFFER_SIZE (4096 * 16)
74 /* Worst-case size in bytes of a 64-bit value encoded with LEB128. */
75 #define LEB128_SIZE 10
77 /* Size of a value encoded as a single byte. */
78 #undef BYTE_SIZE // mach/i386/vm_param.h on OS X defines this to 8, but it isn't used for anything.
81 /* Size in bytes of the event prefix (ID + time). */
82 #define EVENT_SIZE (BYTE_SIZE + LEB128_SIZE)
84 static volatile gint32 runtime_inited;
85 static volatile gint32 in_shutdown;
87 static int nocalls = 0;
88 static int notraces = 0;
89 static int use_zip = 0;
90 static int do_report = 0;
91 static int do_heap_shot = 0;
92 static int max_call_depth = 0;
93 static int command_port = 0;
94 static int heapshot_requested = 0;
95 static int do_mono_sample = 0;
96 static int do_debug = 0;
97 static int do_coverage = 0;
98 static gboolean no_counters = FALSE;
99 static gboolean only_coverage = FALSE;
100 static gboolean debug_coverage = FALSE;
101 static int max_allocated_sample_hits;
103 // Statistics for internal profiler data structures.
104 static gint32 sample_allocations_ctr,
105 buffer_allocations_ctr;
107 // Statistics for profiler events.
108 static gint32 sync_points_ctr,
117 gc_handle_creations_ctr,
118 gc_handle_deletions_ctr,
121 finalize_object_begins_ctr,
122 finalize_object_ends_ctr,
126 assembly_unloads_ctr,
131 method_exception_exits_ctr,
134 exception_throws_ctr,
135 exception_clauses_ctr,
136 monitor_contentions_ctr,
137 monitor_acquisitions_ctr,
138 monitor_failures_ctr,
150 counter_descriptors_ctr,
152 perfcounter_descriptors_ctr,
153 perfcounter_samples_ctr,
154 coverage_methods_ctr,
155 coverage_statements_ctr,
156 coverage_classes_ctr,
157 coverage_assemblies_ctr;
159 static MonoLinkedListSet profiler_thread_list;
165 * The file is composed by a header followed by 0 or more buffers.
166 * Each buffer contains events that happened on a thread: for a given thread
167 * buffers that appear later in the file are guaranteed to contain events
168 * that happened later in time. Buffers from separate threads could be interleaved,
170 * Buffers are not required to be aligned.
173 * [id: 4 bytes] constant value: LOG_HEADER_ID
174 * [major: 1 byte] [minor: 1 byte] major and minor version of the log profiler
175 * [format: 1 byte] version of the data format for the rest of the file
176 * [ptrsize: 1 byte] size in bytes of a pointer in the profiled program
177 * [startup time: 8 bytes] time in milliseconds since the unix epoch when the program started
178 * [timer overhead: 4 bytes] approximate overhead in nanoseconds of the timer
179 * [flags: 4 bytes] file format flags, should be 0 for now
180 * [pid: 4 bytes] pid of the profiled process
181 * [port: 2 bytes] tcp port for server if != 0
182 * [args size: 4 bytes] size of args
183 * [args: string] arguments passed to the profiler
184 * [arch size: 4 bytes] size of arch
185 * [arch: string] architecture the profiler is running on
186 * [os size: 4 bytes] size of os
187 * [os: string] operating system the profiler is running on
189 * The multiple byte integers are in little-endian format.
192 * [buffer header] [event]*
193 * Buffers have a fixed-size header followed by 0 or more bytes of event data.
194 * Timing information and other values in the event data are usually stored
195 * as uleb128 or sleb128 integers. To save space, as noted for each item below,
196 * some data is represented as a difference between the actual value and
197 * either the last value of the same type (like for timing information) or
198 * as the difference from a value stored in a buffer header.
200 * For timing information the data is stored as uleb128, since timing
201 * increases in a monotonic way in each thread: the value is the number of
202 * nanoseconds to add to the last seen timing data in a buffer. The first value
203 * in a buffer will be calculated from the time_base field in the buffer head.
205 * Object or heap sizes are stored as uleb128.
206 * Pointer differences are stored as sleb128, instead.
208 * If an unexpected value is found, the rest of the buffer should be ignored,
209 * as generally the later values need the former to be interpreted correctly.
211 * buffer header format:
212 * [bufid: 4 bytes] constant value: BUF_ID
213 * [len: 4 bytes] size of the data following the buffer header
214 * [time_base: 8 bytes] time base in nanoseconds since an unspecified epoch
215 * [ptr_base: 8 bytes] base value for pointers
216 * [obj_base: 8 bytes] base value for object addresses
217 * [thread id: 8 bytes] system-specific thread ID (pthread_t for example)
218 * [method_base: 8 bytes] base value for MonoMethod pointers
221 * [extended info: upper 4 bits] [type: lower 4 bits]
222 * [time diff: uleb128] nanoseconds since last timing
224 * The data that follows depends on type and the extended info.
225 * Type is one of the enum values in mono-profiler-log.h: TYPE_ALLOC, TYPE_GC,
226 * TYPE_METADATA, TYPE_METHOD, TYPE_EXCEPTION, TYPE_MONITOR, TYPE_HEAP.
227 * The extended info bits are interpreted based on type, see
228 * each individual event description below.
229 * strings are represented as a 0-terminated utf8 sequence.
232 * [num: uleb128] number of frames following
233 * [frame: sleb128]* mum MonoMethod* as a pointer difference from the last such
234 * pointer or the buffer method_base
238 * exinfo: flags: TYPE_ALLOC_BT
239 * [ptr: sleb128] class as a byte difference from ptr_base
240 * [obj: sleb128] object address as a byte difference from obj_base
241 * [size: uleb128] size of the object in the heap
242 * If the TYPE_ALLOC_BT flag is set, a backtrace follows.
246 * exinfo: one of TYPE_GC_EVENT, TYPE_GC_RESIZE, TYPE_GC_MOVE, TYPE_GC_HANDLE_CREATED[_BT],
247 * TYPE_GC_HANDLE_DESTROYED[_BT], TYPE_GC_FINALIZE_START, TYPE_GC_FINALIZE_END,
248 * TYPE_GC_FINALIZE_OBJECT_START, TYPE_GC_FINALIZE_OBJECT_END
249 * if exinfo == TYPE_GC_RESIZE
250 * [heap_size: uleb128] new heap size
251 * if exinfo == TYPE_GC_EVENT
252 * [event type: byte] GC event (MONO_GC_EVENT_* from profiler.h)
253 * [generation: byte] GC generation event refers to
254 * if exinfo == TYPE_GC_MOVE
255 * [num_objects: uleb128] number of object moves that follow
256 * [objaddr: sleb128]+ num_objects object pointer differences from obj_base
257 * num is always an even number: the even items are the old
258 * addresses, the odd numbers are the respective new object addresses
259 * if exinfo == TYPE_GC_HANDLE_CREATED[_BT]
260 * [handle_type: uleb128] GC handle type (System.Runtime.InteropServices.GCHandleType)
261 * upper bits reserved as flags
262 * [handle: uleb128] GC handle value
263 * [objaddr: sleb128] object pointer differences from obj_base
264 * If exinfo == TYPE_GC_HANDLE_CREATED_BT, a backtrace follows.
265 * if exinfo == TYPE_GC_HANDLE_DESTROYED[_BT]
266 * [handle_type: uleb128] GC handle type (System.Runtime.InteropServices.GCHandleType)
267 * upper bits reserved as flags
268 * [handle: uleb128] GC handle value
269 * If exinfo == TYPE_GC_HANDLE_DESTROYED_BT, a backtrace follows.
270 * if exinfo == TYPE_GC_FINALIZE_OBJECT_{START,END}
271 * [object: sleb128] the object as a difference from obj_base
273 * type metadata format:
274 * type: TYPE_METADATA
275 * exinfo: one of: TYPE_END_LOAD, TYPE_END_UNLOAD (optional for TYPE_THREAD and TYPE_DOMAIN)
276 * [mtype: byte] metadata type, one of: TYPE_CLASS, TYPE_IMAGE, TYPE_ASSEMBLY, TYPE_DOMAIN,
277 * TYPE_THREAD, TYPE_CONTEXT
278 * [pointer: sleb128] pointer of the metadata type depending on mtype
279 * if mtype == TYPE_CLASS
280 * [image: sleb128] MonoImage* as a pointer difference from ptr_base
281 * [name: string] full class name
282 * if mtype == TYPE_IMAGE
283 * [name: string] image file name
284 * if mtype == TYPE_ASSEMBLY
285 * [name: string] assembly name
286 * if mtype == TYPE_DOMAIN && exinfo == 0
287 * [name: string] domain friendly name
288 * if mtype == TYPE_CONTEXT
289 * [domain: sleb128] domain id as pointer
290 * if mtype == TYPE_THREAD && exinfo == 0
291 * [name: string] thread name
293 * type method format:
295 * exinfo: one of: TYPE_LEAVE, TYPE_ENTER, TYPE_EXC_LEAVE, TYPE_JIT
296 * [method: sleb128] MonoMethod* as a pointer difference from the last such
297 * pointer or the buffer method_base
298 * if exinfo == TYPE_JIT
299 * [code address: sleb128] pointer to the native code as a diff from ptr_base
300 * [code size: uleb128] size of the generated code
301 * [name: string] full method name
303 * type exception format:
304 * type: TYPE_EXCEPTION
305 * exinfo: TYPE_THROW_BT flag or one of: TYPE_CLAUSE
306 * if exinfo == TYPE_CLAUSE
307 * [clause type: byte] MonoExceptionEnum enum value
308 * [clause index: uleb128] index of the current clause
309 * [method: sleb128] MonoMethod* as a pointer difference from the last such
310 * pointer or the buffer method_base
312 * [object: sleb128] the exception object as a difference from obj_base
313 * if exinfo has TYPE_THROW_BT set, a backtrace follows.
315 * type runtime format:
317 * exinfo: one of: TYPE_JITHELPER
318 * if exinfo == TYPE_JITHELPER
319 * [type: byte] MonoProfilerCodeBufferType enum value
320 * [buffer address: sleb128] pointer to the native code as a diff from ptr_base
321 * [buffer size: uleb128] size of the generated code
322 * if type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE
323 * [name: string] buffer description name
325 * type monitor format:
327 * exinfo: TYPE_MONITOR_BT flag and one of: MONO_PROFILER_MONITOR_(CONTENTION|FAIL|DONE)
328 * [object: sleb128] the lock object as a difference from obj_base
329 * if exinfo.low3bits == MONO_PROFILER_MONITOR_CONTENTION
330 * If the TYPE_MONITOR_BT flag is set, a backtrace follows.
334 * exinfo: one of TYPE_HEAP_START, TYPE_HEAP_END, TYPE_HEAP_OBJECT, TYPE_HEAP_ROOT
335 * if exinfo == TYPE_HEAP_OBJECT
336 * [object: sleb128] the object as a difference from obj_base
337 * [class: sleb128] the object MonoClass* as a difference from ptr_base
338 * [size: uleb128] size of the object on the heap
339 * [num_refs: uleb128] number of object references
340 * each referenced objref is preceded by a uleb128 encoded offset: the
341 * first offset is from the object address and each next offset is relative
342 * to the previous one
343 * [objrefs: sleb128]+ object referenced as a difference from obj_base
344 * The same object can appear multiple times, but only the first time
345 * with size != 0: in the other cases this data will only be used to
346 * provide additional referenced objects.
347 * if exinfo == TYPE_HEAP_ROOT
348 * [num_roots: uleb128] number of root references
349 * [num_gc: uleb128] number of major gcs
350 * [object: sleb128] the object as a difference from obj_base
351 * [root_type: byte] the root_type: MonoProfileGCRootType (profiler.h)
352 * [extra_info: uleb128] the extra_info value
353 * object, root_type and extra_info are repeated num_roots times
357 * exinfo: one of TYPE_SAMPLE_HIT, TYPE_SAMPLE_USYM, TYPE_SAMPLE_UBIN, TYPE_SAMPLE_COUNTERS_DESC, TYPE_SAMPLE_COUNTERS
358 * if exinfo == TYPE_SAMPLE_HIT
359 * [thread: sleb128] thread id as difference from ptr_base
360 * [count: uleb128] number of following instruction addresses
361 * [ip: sleb128]* instruction pointer as difference from ptr_base
362 * [mbt_count: uleb128] number of managed backtrace frames
363 * [method: sleb128]* MonoMethod* as a pointer difference from the last such
364 * pointer or the buffer method_base (the first such method can be also indentified by ip, but this is not neccessarily true)
365 * if exinfo == TYPE_SAMPLE_USYM
366 * [address: sleb128] symbol address as a difference from ptr_base
367 * [size: uleb128] symbol size (may be 0 if unknown)
368 * [name: string] symbol name
369 * if exinfo == TYPE_SAMPLE_UBIN
370 * [address: sleb128] address where binary has been loaded
371 * [offset: uleb128] file offset of mapping (the same file can be mapped multiple times)
372 * [size: uleb128] memory size
373 * [name: string] binary name
374 * if exinfo == TYPE_SAMPLE_COUNTERS_DESC
375 * [len: uleb128] number of counters
377 * [section: uleb128] section of counter
378 * if section == MONO_COUNTER_PERFCOUNTERS:
379 * [section_name: string] section name of counter
380 * [name: string] name of counter
381 * [type: byte] type of counter
382 * [unit: byte] unit of counter
383 * [variance: byte] variance of counter
384 * [index: uleb128] unique index of counter
385 * if exinfo == TYPE_SAMPLE_COUNTERS
387 * [index: uleb128] unique index of counter
390 * [type: byte] type of counter value
393 * [0: uleb128] 0 -> value is null
395 * [1: uleb128] 1 -> value is not null
396 * [value: string] counter value
398 * [value: uleb128/sleb128/double] counter value, can be sleb128, uleb128 or double (determined by using type)
400 * type coverage format
401 * type: TYPE_COVERAGE
402 * exinfo: one of TYPE_COVERAGE_METHOD, TYPE_COVERAGE_STATEMENT, TYPE_COVERAGE_ASSEMBLY, TYPE_COVERAGE_CLASS
403 * if exinfo == TYPE_COVERAGE_METHOD
404 * [assembly: string] name of assembly
405 * [class: string] name of the class
406 * [name: string] name of the method
407 * [signature: string] the signature of the method
408 * [filename: string] the file path of the file that contains this method
409 * [token: uleb128] the method token
410 * [method_id: uleb128] an ID for this data to associate with the buffers of TYPE_COVERAGE_STATEMENTS
411 * [len: uleb128] the number of TYPE_COVERAGE_BUFFERS associated with this method
412 * if exinfo == TYPE_COVERAGE_STATEMENTS
413 * [method_id: uleb128] an the TYPE_COVERAGE_METHOD buffer to associate this with
414 * [offset: uleb128] the il offset relative to the previous offset
415 * [counter: uleb128] the counter for this instruction
416 * [line: uleb128] the line of filename containing this instruction
417 * [column: uleb128] the column containing this instruction
418 * if exinfo == TYPE_COVERAGE_ASSEMBLY
419 * [name: string] assembly name
420 * [guid: string] assembly GUID
421 * [filename: string] assembly filename
422 * [number_of_methods: uleb128] the number of methods in this assembly
423 * [fully_covered: uleb128] the number of fully covered methods
424 * [partially_covered: uleb128] the number of partially covered methods
425 * currently partially_covered will always be 0, and fully_covered is the
426 * number of methods that are fully and partially covered.
427 * if exinfo == TYPE_COVERAGE_CLASS
428 * [name: string] assembly name
429 * [class: string] class name
430 * [number_of_methods: uleb128] the number of methods in this class
431 * [fully_covered: uleb128] the number of fully covered methods
432 * [partially_covered: uleb128] the number of partially covered methods
433 * currently partially_covered will always be 0, and fully_covered is the
434 * number of methods that are fully and partially covered.
438 * exinfo: one of: TYPE_SYNC_POINT
439 * if exinfo == TYPE_SYNC_POINT
440 * [type: byte] MonoProfilerSyncPointType enum value
443 // Pending data to be written to the log, for a single thread.
444 // Threads periodically flush their own LogBuffers by calling safe_send
445 typedef struct _LogBuffer LogBuffer;
447 // Next (older) LogBuffer in processing queue
453 uintptr_t method_base;
454 uintptr_t last_method;
458 // Bytes allocated for this LogBuffer
461 // Start of currently unused space in buffer
462 unsigned char* cursor;
464 // Pointer to start-of-structure-plus-size (for convenience)
465 unsigned char* buf_end;
467 // Start of data in buffer. Contents follow "buffer format" described above.
468 unsigned char buf [1];
472 MonoLinkedListSetNode node;
474 // Convenience pointer to the profiler structure.
475 MonoProfiler *profiler;
477 // Was this thread added to the LLS?
480 // The current log buffer for this thread.
483 // Methods referenced by events in `buffer`, see `MethodInfo`.
486 // Current call depth for enter/leave events.
489 // Indicates whether this thread is currently writing to its `buffer`.
492 // Has this thread written a thread end event to `buffer`?
494 } MonoProfilerThread;
499 return (uintptr_t) mono_native_thread_id_get ();
506 return (uintptr_t) GetCurrentProcessId ();
508 return (uintptr_t) getpid ();
513 static mach_timebase_info_data_t timebase_info;
514 #elif defined (HOST_WIN32)
515 static LARGE_INTEGER pcounter_freq;
518 #define TICKS_PER_SEC 1000000000LL
524 uint64_t time = mach_absolute_time ();
526 time *= timebase_info.numer;
527 time /= timebase_info.denom;
530 #elif defined (HOST_WIN32)
533 QueryPerformanceCounter (&value);
535 return value.QuadPart * TICKS_PER_SEC / pcounter_freq.QuadPart;
536 #elif defined (CLOCK_MONOTONIC)
537 struct timespec tspec;
539 clock_gettime (CLOCK_MONOTONIC, &tspec);
541 return ((uint64_t) tspec.tv_sec * TICKS_PER_SEC + tspec.tv_nsec);
545 gettimeofday (&tv, NULL);
547 return ((uint64_t) tv.tv_sec * TICKS_PER_SEC + tv.tv_usec * 1000);
551 static int timer_overhead;
557 mach_timebase_info (&timebase_info);
558 #elif defined (HOST_WIN32)
559 QueryPerformanceFrequency (&pcounter_freq);
562 uint64_t time_start = current_time ();
564 for (int i = 0; i < 256; ++i)
567 uint64_t time_end = current_time ();
569 timer_overhead = (time_end - time_start) / 256;
573 * These macros should be used when writing an event to a log buffer. They take
574 * care of a bunch of stuff that can be repetitive and error-prone, such as
575 * acquiring/releasing the buffer lock, incrementing the event counter,
576 * expanding the log buffer, processing requests, etc. They also create a scope
577 * so that it's harder to leak the LogBuffer pointer, which can be problematic
578 * as the pointer is unstable when the buffer lock isn't acquired.
581 #define ENTER_LOG(COUNTER, BUFFER, SIZE) \
583 MonoProfilerThread *thread__ = PROF_TLS_GET (); \
584 if (thread__->attached) \
586 g_assert (!thread__->busy && "Why are we trying to write a new event while already writing one?"); \
587 thread__->busy = TRUE; \
588 InterlockedIncrement ((COUNTER)); \
589 LogBuffer *BUFFER = ensure_logbuf_unsafe (thread__, (SIZE))
591 #define EXIT_LOG_EXPLICIT(SEND, REQUESTS) \
592 thread__->busy = FALSE; \
594 send_log_unsafe (TRUE); \
595 if (thread__->attached) \
598 process_requests (); \
601 // Pass these to EXIT_LOG_EXPLICIT () for easier reading.
603 #define NO_SEND FALSE
604 #define DO_REQUESTS TRUE
605 #define NO_REQUESTS FALSE
607 #define EXIT_LOG EXIT_LOG_EXPLICIT (DO_SEND, DO_REQUESTS)
609 static volatile gint32 buffer_rwlock_count;
610 static volatile gpointer buffer_rwlock_exclusive;
612 // Can be used recursively.
617 * If the thread holding the exclusive lock tries to modify the
618 * reader count, just make it a no-op. This way, we also avoid
619 * invoking the GC safe point macros below, which could break if
620 * done from a thread that is currently the initiator of STW.
622 * In other words, we rely on the fact that the GC thread takes
623 * the exclusive lock in the gc_event () callback when the world
626 if (InterlockedReadPointer (&buffer_rwlock_exclusive) != (gpointer) thread_id ()) {
629 while (InterlockedReadPointer (&buffer_rwlock_exclusive))
630 mono_thread_info_yield ();
632 InterlockedIncrement (&buffer_rwlock_count);
637 mono_memory_barrier ();
643 mono_memory_barrier ();
645 // See the comment in buffer_lock ().
646 if (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id ())
649 g_assert (InterlockedRead (&buffer_rwlock_count) && "Why are we trying to decrement a zero reader count?");
651 InterlockedDecrement (&buffer_rwlock_count);
654 // Cannot be used recursively.
656 buffer_lock_excl (void)
658 gpointer tid = (gpointer) thread_id ();
660 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) != tid && "Why are we taking the exclusive lock twice?");
664 while (InterlockedCompareExchangePointer (&buffer_rwlock_exclusive, tid, 0))
665 mono_thread_info_yield ();
667 while (InterlockedRead (&buffer_rwlock_count))
668 mono_thread_info_yield ();
672 mono_memory_barrier ();
676 buffer_unlock_excl (void)
678 mono_memory_barrier ();
680 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) && "Why is the exclusive lock not held?");
681 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why does another thread hold the exclusive lock?");
682 g_assert (!InterlockedRead (&buffer_rwlock_count) && "Why are there readers when the exclusive lock is held?");
684 InterlockedWritePointer (&buffer_rwlock_exclusive, NULL);
687 typedef struct _BinaryObject BinaryObject;
688 struct _BinaryObject {
694 struct _MonoProfiler {
696 #if defined (HAVE_SYS_ZLIB)
700 uint64_t startup_time;
705 MonoNativeThreadId helper_thread;
706 MonoNativeThreadId writer_thread;
707 MonoNativeThreadId dumper_thread;
708 volatile gint32 run_writer_thread;
709 MonoLockFreeAllocSizeClass writer_entry_size_class;
710 MonoLockFreeAllocator writer_entry_allocator;
711 MonoLockFreeQueue writer_queue;
712 MonoSemType writer_queue_sem;
713 MonoConcurrentHashTable *method_table;
714 mono_mutex_t method_table_mutex;
715 volatile gint32 run_dumper_thread;
716 MonoLockFreeQueue dumper_queue;
717 MonoSemType dumper_queue_sem;
718 MonoLockFreeAllocSizeClass sample_size_class;
719 MonoLockFreeAllocator sample_allocator;
720 MonoLockFreeQueue sample_reuse_queue;
721 BinaryObject *binary_objects;
722 GPtrArray *coverage_filters;
726 MonoLockFreeQueueNode node;
731 #define WRITER_ENTRY_BLOCK_SIZE (mono_pagesize ())
741 #define PROF_TLS_SET(VAL) (TlsSetValue (profiler_tls, (VAL)))
742 #define PROF_TLS_GET() ((MonoProfilerThread *) TlsGetValue (profiler_tls))
743 #define PROF_TLS_INIT() (profiler_tls = TlsAlloc ())
744 #define PROF_TLS_FREE() (TlsFree (profiler_tls))
746 static DWORD profiler_tls;
750 #define PROF_TLS_SET(VAL) (profiler_tls = (VAL))
751 #define PROF_TLS_GET() (profiler_tls)
752 #define PROF_TLS_INIT()
753 #define PROF_TLS_FREE()
755 static __thread MonoProfilerThread *profiler_tls;
759 #define PROF_TLS_SET(VAL) (pthread_setspecific (profiler_tls, (VAL)))
760 #define PROF_TLS_GET() ((MonoProfilerThread *) pthread_getspecific (profiler_tls))
761 #define PROF_TLS_INIT() (pthread_key_create (&profiler_tls, NULL))
762 #define PROF_TLS_FREE() (pthread_key_delete (profiler_tls))
764 static pthread_key_t profiler_tls;
769 pstrdup (const char *s)
771 int len = strlen (s) + 1;
772 char *p = (char *) g_malloc (len);
778 alloc_buffer (int size)
780 return mono_valloc (NULL, size, MONO_MMAP_READ | MONO_MMAP_WRITE | MONO_MMAP_ANON | MONO_MMAP_PRIVATE, MONO_MEM_ACCOUNT_PROFILER);
784 free_buffer (void *buf, int size)
786 mono_vfree (buf, size, MONO_MEM_ACCOUNT_PROFILER);
790 create_buffer (uintptr_t tid)
792 LogBuffer* buf = (LogBuffer *) alloc_buffer (BUFFER_SIZE);
794 InterlockedIncrement (&buffer_allocations_ctr);
796 buf->size = BUFFER_SIZE;
797 buf->time_base = current_time ();
798 buf->last_time = buf->time_base;
799 buf->buf_end = (unsigned char *) buf + buf->size;
800 buf->cursor = buf->buf;
801 buf->thread_id = tid;
807 * Must be called with the reader lock held if thread is the current thread, or
808 * the exclusive lock if thread is a different thread. However, if thread is
809 * the current thread, and init_thread () was called with add_to_lls = FALSE,
810 * then no locking is necessary.
813 init_buffer_state (MonoProfilerThread *thread)
815 thread->buffer = create_buffer (thread->node.key);
816 thread->methods = NULL;
820 clear_hazard_pointers (MonoThreadHazardPointers *hp)
822 mono_hazard_pointer_clear (hp, 0);
823 mono_hazard_pointer_clear (hp, 1);
824 mono_hazard_pointer_clear (hp, 2);
827 static MonoProfilerThread *
828 init_thread (MonoProfiler *prof, gboolean add_to_lls)
830 MonoProfilerThread *thread = PROF_TLS_GET ();
833 * Sometimes we may try to initialize a thread twice. One example is the
834 * main thread: We initialize it when setting up the profiler, but we will
835 * also get a thread_start () callback for it. Another example is when
836 * attaching new threads to the runtime: We may get a gc_alloc () callback
837 * for that thread's thread object (where we initialize it), soon followed
838 * by a thread_start () callback.
840 * These cases are harmless anyhow. Just return if we've already done the
841 * initialization work.
846 thread = g_malloc (sizeof (MonoProfilerThread));
847 thread->node.key = thread_id ();
848 thread->profiler = prof;
849 thread->attached = add_to_lls;
850 thread->call_depth = 0;
852 thread->ended = FALSE;
854 init_buffer_state (thread);
857 * Some internal profiler threads don't need to be cleaned up
858 * by the main thread on shutdown.
861 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
862 g_assert (mono_lls_insert (&profiler_thread_list, hp, &thread->node) && "Why can't we insert the thread in the LLS?");
863 clear_hazard_pointers (hp);
866 PROF_TLS_SET (thread);
871 // Only valid if init_thread () was called with add_to_lls = FALSE.
873 deinit_thread (MonoProfilerThread *thread)
875 g_assert (!thread->attached && "Why are we manually freeing an attached thread?");
881 // Only valid if init_thread () was called with add_to_lls = FALSE.
883 ensure_logbuf_unsafe (MonoProfilerThread *thread, int bytes)
885 LogBuffer *old = thread->buffer;
887 if (old && old->cursor + bytes + 100 < old->buf_end)
890 LogBuffer *new_ = create_buffer (thread->node.key);
892 thread->buffer = new_;
898 encode_uleb128 (uint64_t value, uint8_t *buf, uint8_t **endbuf)
903 uint8_t b = value & 0x7f;
906 if (value != 0) /* more bytes to come */
916 encode_sleb128 (intptr_t value, uint8_t *buf, uint8_t **endbuf)
919 int negative = (value < 0);
920 unsigned int size = sizeof (intptr_t) * 8;
928 /* the following is unnecessary if the
929 * implementation of >>= uses an arithmetic rather
930 * than logical shift for a signed left operand
934 value |= - ((intptr_t) 1 <<(size - 7));
936 /* sign bit of byte is second high order bit (0x40) */
937 if ((value == 0 && !(byte & 0x40)) ||
938 (value == -1 && (byte & 0x40)))
950 emit_byte (LogBuffer *logbuffer, int value)
952 logbuffer->cursor [0] = value;
955 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
959 emit_value (LogBuffer *logbuffer, int value)
961 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
963 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
967 emit_time (LogBuffer *logbuffer, uint64_t value)
969 uint64_t tdiff = value - logbuffer->last_time;
970 encode_uleb128 (tdiff, logbuffer->cursor, &logbuffer->cursor);
971 logbuffer->last_time = value;
973 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
977 emit_event_time (LogBuffer *logbuffer, int event, uint64_t time)
979 emit_byte (logbuffer, event);
980 emit_time (logbuffer, time);
984 emit_event (LogBuffer *logbuffer, int event)
986 emit_event_time (logbuffer, event, current_time ());
990 emit_svalue (LogBuffer *logbuffer, int64_t value)
992 encode_sleb128 (value, logbuffer->cursor, &logbuffer->cursor);
994 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
998 emit_uvalue (LogBuffer *logbuffer, uint64_t value)
1000 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
1002 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1006 emit_ptr (LogBuffer *logbuffer, void *ptr)
1008 if (!logbuffer->ptr_base)
1009 logbuffer->ptr_base = (uintptr_t) ptr;
1011 emit_svalue (logbuffer, (intptr_t) ptr - logbuffer->ptr_base);
1013 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1017 emit_method_inner (LogBuffer *logbuffer, void *method)
1019 if (!logbuffer->method_base) {
1020 logbuffer->method_base = (intptr_t) method;
1021 logbuffer->last_method = (intptr_t) method;
1024 encode_sleb128 ((intptr_t) ((char *) method - (char *) logbuffer->last_method), logbuffer->cursor, &logbuffer->cursor);
1025 logbuffer->last_method = (intptr_t) method;
1027 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1031 register_method_local (MonoMethod *method, MonoJitInfo *ji)
1033 MonoProfilerThread *thread = PROF_TLS_GET ();
1035 if (!mono_conc_hashtable_lookup (thread->profiler->method_table, method)) {
1036 MethodInfo *info = (MethodInfo *) g_malloc (sizeof (MethodInfo));
1038 info->method = method;
1040 info->time = current_time ();
1042 GPtrArray *arr = thread->methods ? thread->methods : (thread->methods = g_ptr_array_new ());
1043 g_ptr_array_add (arr, info);
1048 emit_method (LogBuffer *logbuffer, MonoMethod *method)
1050 register_method_local (method, NULL);
1051 emit_method_inner (logbuffer, method);
1055 emit_obj (LogBuffer *logbuffer, void *ptr)
1057 if (!logbuffer->obj_base)
1058 logbuffer->obj_base = (uintptr_t) ptr >> 3;
1060 emit_svalue (logbuffer, ((uintptr_t) ptr >> 3) - logbuffer->obj_base);
1062 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1066 emit_string (LogBuffer *logbuffer, const char *str, size_t size)
1070 for (; i < size; i++) {
1073 emit_byte (logbuffer, str [i]);
1076 emit_byte (logbuffer, '\0');
1080 emit_double (LogBuffer *logbuffer, double value)
1083 unsigned char buffer[8];
1084 memcpy (buffer, &value, 8);
1085 #if G_BYTE_ORDER == G_BIG_ENDIAN
1086 for (i = 7; i >= 0; i--)
1088 for (i = 0; i < 8; i++)
1090 emit_byte (logbuffer, buffer[i]);
1094 write_int16 (char *buf, int32_t value)
1097 for (i = 0; i < 2; ++i) {
1105 write_int32 (char *buf, int32_t value)
1108 for (i = 0; i < 4; ++i) {
1116 write_int64 (char *buf, int64_t value)
1119 for (i = 0; i < 8; ++i) {
1127 write_header_string (char *p, const char *str)
1129 size_t len = strlen (str) + 1;
1131 p = write_int32 (p, len);
1138 dump_header (MonoProfiler *profiler)
1140 const char *args = profiler->args;
1141 const char *arch = mono_config_get_cpu ();
1142 const char *os = mono_config_get_os ();
1144 char *hbuf = g_malloc (
1145 sizeof (gint32) /* header id */ +
1146 sizeof (gint8) /* major version */ +
1147 sizeof (gint8) /* minor version */ +
1148 sizeof (gint8) /* data version */ +
1149 sizeof (gint8) /* word size */ +
1150 sizeof (gint64) /* startup time */ +
1151 sizeof (gint32) /* timer overhead */ +
1152 sizeof (gint32) /* flags */ +
1153 sizeof (gint32) /* process id */ +
1154 sizeof (gint16) /* command port */ +
1155 sizeof (gint32) + strlen (args) + 1 /* arguments */ +
1156 sizeof (gint32) + strlen (arch) + 1 /* architecture */ +
1157 sizeof (gint32) + strlen (os) + 1 /* operating system */
1161 p = write_int32 (p, LOG_HEADER_ID);
1162 *p++ = LOG_VERSION_MAJOR;
1163 *p++ = LOG_VERSION_MINOR;
1164 *p++ = LOG_DATA_VERSION;
1165 *p++ = sizeof (void *);
1166 p = write_int64 (p, ((uint64_t) time (NULL)) * 1000);
1167 p = write_int32 (p, timer_overhead);
1168 p = write_int32 (p, 0); /* flags */
1169 p = write_int32 (p, process_id ());
1170 p = write_int16 (p, profiler->command_port);
1171 p = write_header_string (p, args);
1172 p = write_header_string (p, arch);
1173 p = write_header_string (p, os);
1175 #if defined (HAVE_SYS_ZLIB)
1176 if (profiler->gzfile) {
1177 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1181 fwrite (hbuf, p - hbuf, 1, profiler->file);
1182 fflush (profiler->file);
1189 * Must be called with the reader lock held if thread is the current thread, or
1190 * the exclusive lock if thread is a different thread. However, if thread is
1191 * the current thread, and init_thread () was called with add_to_lls = FALSE,
1192 * then no locking is necessary.
1195 send_buffer (MonoProfilerThread *thread)
1197 WriterQueueEntry *entry = mono_lock_free_alloc (&thread->profiler->writer_entry_allocator);
1198 entry->methods = thread->methods;
1199 entry->buffer = thread->buffer;
1201 mono_lock_free_queue_node_init (&entry->node, FALSE);
1203 mono_lock_free_queue_enqueue (&thread->profiler->writer_queue, &entry->node);
1204 mono_os_sem_post (&thread->profiler->writer_queue_sem);
1208 free_thread (gpointer p)
1210 MonoProfilerThread *thread = p;
1212 if (!thread->ended) {
1214 * The thread is being cleaned up by the main thread during
1215 * shutdown. This typically happens for internal runtime
1216 * threads. We need to synthesize a thread end event.
1219 InterlockedIncrement (&thread_ends_ctr);
1221 LogBuffer *buf = ensure_logbuf_unsafe (thread,
1222 EVENT_SIZE /* event */ +
1223 BYTE_SIZE /* type */ +
1224 LEB128_SIZE /* tid */
1227 emit_event (buf, TYPE_END_UNLOAD | TYPE_METADATA);
1228 emit_byte (buf, TYPE_THREAD);
1229 emit_ptr (buf, (void *) thread->node.key);
1232 send_buffer (thread);
1238 remove_thread (MonoProfilerThread *thread)
1240 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
1242 if (mono_lls_remove (&profiler_thread_list, hp, &thread->node))
1243 mono_thread_hazardous_try_free (thread, free_thread);
1245 clear_hazard_pointers (hp);
1249 dump_buffer (MonoProfiler *profiler, LogBuffer *buf)
1255 dump_buffer (profiler, buf->next);
1257 if (buf->cursor - buf->buf) {
1258 p = write_int32 (p, BUF_ID);
1259 p = write_int32 (p, buf->cursor - buf->buf);
1260 p = write_int64 (p, buf->time_base);
1261 p = write_int64 (p, buf->ptr_base);
1262 p = write_int64 (p, buf->obj_base);
1263 p = write_int64 (p, buf->thread_id);
1264 p = write_int64 (p, buf->method_base);
1266 #if defined (HAVE_SYS_ZLIB)
1267 if (profiler->gzfile) {
1268 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1269 gzwrite (profiler->gzfile, buf->buf, buf->cursor - buf->buf);
1273 fwrite (hbuf, p - hbuf, 1, profiler->file);
1274 fwrite (buf->buf, buf->cursor - buf->buf, 1, profiler->file);
1275 fflush (profiler->file);
1279 free_buffer (buf, buf->size);
1283 dump_buffer_threadless (MonoProfiler *profiler, LogBuffer *buf)
1285 for (LogBuffer *iter = buf; iter; iter = iter->next)
1286 iter->thread_id = 0;
1288 dump_buffer (profiler, buf);
1292 process_requests (void)
1294 if (heapshot_requested)
1295 mono_gc_collect (mono_gc_max_generation ());
1298 // Only valid if init_thread () was called with add_to_lls = FALSE.
1300 send_log_unsafe (gboolean if_needed)
1302 MonoProfilerThread *thread = PROF_TLS_GET ();
1304 if (!if_needed || (if_needed && thread->buffer->next)) {
1305 if (!thread->attached)
1306 for (LogBuffer *iter = thread->buffer; iter; iter = iter->next)
1307 iter->thread_id = 0;
1309 send_buffer (thread);
1310 init_buffer_state (thread);
1314 // Assumes that the exclusive lock is held.
1316 sync_point_flush (void)
1318 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why don't we hold the exclusive lock?");
1320 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
1321 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
1323 send_buffer (thread);
1324 init_buffer_state (thread);
1325 } MONO_LLS_FOREACH_SAFE_END
1328 // Assumes that the exclusive lock is held.
1330 sync_point_mark (MonoProfilerSyncPointType type)
1332 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why don't we hold the exclusive lock?");
1334 ENTER_LOG (&sync_points_ctr, logbuffer,
1335 EVENT_SIZE /* event */ +
1336 LEB128_SIZE /* type */
1339 emit_event (logbuffer, TYPE_META | TYPE_SYNC_POINT);
1340 emit_byte (logbuffer, type);
1342 EXIT_LOG_EXPLICIT (NO_SEND, NO_REQUESTS);
1344 send_log_unsafe (FALSE);
1347 // Assumes that the exclusive lock is held.
1349 sync_point (MonoProfilerSyncPointType type)
1351 sync_point_flush ();
1352 sync_point_mark (type);
1356 gc_reference (MonoObject *obj, MonoClass *klass, uintptr_t size, uintptr_t num, MonoObject **refs, uintptr_t *offsets, void *data)
1358 /* account for object alignment in the heap */
1362 ENTER_LOG (&heap_objects_ctr, logbuffer,
1363 EVENT_SIZE /* event */ +
1364 LEB128_SIZE /* obj */ +
1365 LEB128_SIZE /* klass */ +
1366 LEB128_SIZE /* size */ +
1367 LEB128_SIZE /* num */ +
1369 LEB128_SIZE /* offset */ +
1370 LEB128_SIZE /* ref */
1374 emit_event (logbuffer, TYPE_HEAP_OBJECT | TYPE_HEAP);
1375 emit_obj (logbuffer, obj);
1376 emit_ptr (logbuffer, klass);
1377 emit_value (logbuffer, size);
1378 emit_value (logbuffer, num);
1380 uintptr_t last_offset = 0;
1382 for (int i = 0; i < num; ++i) {
1383 emit_value (logbuffer, offsets [i] - last_offset);
1384 last_offset = offsets [i];
1385 emit_obj (logbuffer, refs [i]);
1388 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
1393 static unsigned int hs_mode_ms = 0;
1394 static unsigned int hs_mode_gc = 0;
1395 static unsigned int hs_mode_ondemand = 0;
1396 static unsigned int gc_count = 0;
1397 static uint64_t last_hs_time = 0;
1398 static gboolean do_heap_walk = FALSE;
1401 heap_walk (MonoProfiler *profiler)
1403 ENTER_LOG (&heap_starts_ctr, logbuffer,
1404 EVENT_SIZE /* event */
1407 emit_event (logbuffer, TYPE_HEAP_START | TYPE_HEAP);
1409 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
1411 mono_gc_walk_heap (0, gc_reference, NULL);
1413 ENTER_LOG (&heap_ends_ctr, logbuffer,
1414 EVENT_SIZE /* event */
1417 emit_event (logbuffer, TYPE_HEAP_END | TYPE_HEAP);
1419 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
1423 gc_roots (MonoProfiler *prof, int num, void **objects, int *root_types, uintptr_t *extra_info)
1425 ENTER_LOG (&heap_roots_ctr, logbuffer,
1426 EVENT_SIZE /* event */ +
1427 LEB128_SIZE /* num */ +
1428 LEB128_SIZE /* collections */ +
1430 LEB128_SIZE /* object */ +
1431 LEB128_SIZE /* root type */ +
1432 LEB128_SIZE /* extra info */
1436 emit_event (logbuffer, TYPE_HEAP_ROOT | TYPE_HEAP);
1437 emit_value (logbuffer, num);
1438 emit_value (logbuffer, mono_gc_collection_count (mono_gc_max_generation ()));
1440 for (int i = 0; i < num; ++i) {
1441 emit_obj (logbuffer, objects [i]);
1442 emit_byte (logbuffer, root_types [i]);
1443 emit_value (logbuffer, extra_info [i]);
1446 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
1450 gc_event (MonoProfiler *profiler, MonoGCEvent ev, int generation)
1452 ENTER_LOG (&gc_events_ctr, logbuffer,
1453 EVENT_SIZE /* event */ +
1454 BYTE_SIZE /* gc event */ +
1455 BYTE_SIZE /* generation */
1458 emit_event (logbuffer, TYPE_GC_EVENT | TYPE_GC);
1459 emit_byte (logbuffer, ev);
1460 emit_byte (logbuffer, generation);
1462 EXIT_LOG_EXPLICIT (NO_SEND, NO_REQUESTS);
1465 case MONO_GC_EVENT_START:
1466 if (generation == mono_gc_max_generation ())
1469 uint64_t now = current_time ();
1471 if (hs_mode_ms && (now - last_hs_time) / 1000 * 1000 >= hs_mode_ms)
1472 do_heap_walk = TRUE;
1473 else if (hs_mode_gc && !(gc_count % hs_mode_gc))
1474 do_heap_walk = TRUE;
1475 else if (hs_mode_ondemand)
1476 do_heap_walk = heapshot_requested;
1477 else if (!hs_mode_ms && !hs_mode_gc && generation == mono_gc_max_generation ())
1478 do_heap_walk = TRUE;
1480 case MONO_GC_EVENT_PRE_STOP_WORLD_LOCKED:
1482 * Ensure that no thread can be in the middle of writing to
1483 * a buffer when the world stops...
1485 buffer_lock_excl ();
1487 case MONO_GC_EVENT_POST_STOP_WORLD:
1489 * ... So that we now have a consistent view of all buffers.
1490 * This allows us to flush them. We need to do this because
1491 * they may contain object allocation events that need to be
1492 * committed to the log file before any object move events
1493 * that will be produced during this GC.
1495 sync_point (SYNC_POINT_WORLD_STOP);
1497 case MONO_GC_EVENT_PRE_START_WORLD:
1498 if (do_heap_shot && do_heap_walk) {
1499 heap_walk (profiler);
1501 do_heap_walk = FALSE;
1502 heapshot_requested = 0;
1503 last_hs_time = current_time ();
1506 case MONO_GC_EVENT_POST_START_WORLD_UNLOCKED:
1508 * Similarly, we must now make sure that any object moves
1509 * written to the GC thread's buffer are flushed. Otherwise,
1510 * object allocation events for certain addresses could come
1511 * after the move events that made those addresses available.
1513 sync_point_mark (SYNC_POINT_WORLD_START);
1516 * Finally, it is safe to allow other threads to write to
1517 * their buffers again.
1519 buffer_unlock_excl ();
1527 gc_resize (MonoProfiler *profiler, int64_t new_size)
1529 ENTER_LOG (&gc_resizes_ctr, logbuffer,
1530 EVENT_SIZE /* event */ +
1531 LEB128_SIZE /* new size */
1534 emit_event (logbuffer, TYPE_GC_RESIZE | TYPE_GC);
1535 emit_value (logbuffer, new_size);
1537 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
1542 MonoMethod* methods [MAX_FRAMES];
1543 int32_t il_offsets [MAX_FRAMES];
1544 int32_t native_offsets [MAX_FRAMES];
1547 static int num_frames = MAX_FRAMES;
1550 walk_stack (MonoMethod *method, int32_t native_offset, int32_t il_offset, mono_bool managed, void* data)
1552 FrameData *frame = (FrameData *)data;
1553 if (method && frame->count < num_frames) {
1554 frame->il_offsets [frame->count] = il_offset;
1555 frame->native_offsets [frame->count] = native_offset;
1556 frame->methods [frame->count++] = method;
1557 //printf ("In %d %s at %d (native: %d)\n", frame->count, mono_method_get_name (method), il_offset, native_offset);
1559 return frame->count == num_frames;
1563 * a note about stack walks: they can cause more profiler events to fire,
1564 * so we need to make sure they don't happen after we started emitting an
1565 * event, hence the collect_bt/emit_bt split.
1568 collect_bt (FrameData *data)
1571 mono_stack_walk_no_il (walk_stack, data);
1575 emit_bt (MonoProfiler *prof, LogBuffer *logbuffer, FrameData *data)
1577 /* FIXME: this is actually tons of data and we should
1578 * just output it the first time and use an id the next
1580 if (data->count > num_frames)
1581 printf ("bad num frames: %d\n", data->count);
1582 emit_value (logbuffer, data->count);
1583 //if (*p != data.count) {
1584 // 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);}
1585 while (data->count) {
1586 emit_method (logbuffer, data->methods [--data->count]);
1591 gc_alloc (MonoProfiler *prof, MonoObject *obj, MonoClass *klass)
1593 init_thread (prof, TRUE);
1595 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_ALLOC_BT : 0;
1597 uintptr_t len = mono_object_get_size (obj);
1598 /* account for object alignment in the heap */
1605 ENTER_LOG (&gc_allocs_ctr, logbuffer,
1606 EVENT_SIZE /* event */ +
1607 LEB128_SIZE /* klass */ +
1608 LEB128_SIZE /* obj */ +
1609 LEB128_SIZE /* size */ +
1611 LEB128_SIZE /* count */ +
1613 LEB128_SIZE /* method */
1618 emit_event (logbuffer, do_bt | TYPE_ALLOC);
1619 emit_ptr (logbuffer, klass);
1620 emit_obj (logbuffer, obj);
1621 emit_value (logbuffer, len);
1624 emit_bt (prof, logbuffer, &data);
1630 gc_moves (MonoProfiler *prof, void **objects, int num)
1632 ENTER_LOG (&gc_moves_ctr, logbuffer,
1633 EVENT_SIZE /* event */ +
1634 LEB128_SIZE /* num */ +
1636 LEB128_SIZE /* object */
1640 emit_event (logbuffer, TYPE_GC_MOVE | TYPE_GC);
1641 emit_value (logbuffer, num);
1643 for (int i = 0; i < num; ++i)
1644 emit_obj (logbuffer, objects [i]);
1646 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
1650 gc_handle (MonoProfiler *prof, int op, int type, uintptr_t handle, MonoObject *obj)
1652 int do_bt = nocalls && InterlockedRead (&runtime_inited) && !notraces;
1658 gint32 *ctr = op == MONO_PROFILER_GC_HANDLE_CREATED ? &gc_handle_creations_ctr : &gc_handle_deletions_ctr;
1660 ENTER_LOG (ctr, logbuffer,
1661 EVENT_SIZE /* event */ +
1662 LEB128_SIZE /* type */ +
1663 LEB128_SIZE /* handle */ +
1664 (op == MONO_PROFILER_GC_HANDLE_CREATED ? (
1665 LEB128_SIZE /* obj */
1668 LEB128_SIZE /* count */ +
1670 LEB128_SIZE /* method */
1675 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1676 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_CREATED_BT : TYPE_GC_HANDLE_CREATED) | TYPE_GC);
1677 else if (op == MONO_PROFILER_GC_HANDLE_DESTROYED)
1678 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_DESTROYED_BT : TYPE_GC_HANDLE_DESTROYED) | TYPE_GC);
1680 g_assert_not_reached ();
1682 emit_value (logbuffer, type);
1683 emit_value (logbuffer, handle);
1685 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1686 emit_obj (logbuffer, obj);
1689 emit_bt (prof, logbuffer, &data);
1695 finalize_begin (MonoProfiler *prof)
1697 ENTER_LOG (&finalize_begins_ctr, buf,
1698 EVENT_SIZE /* event */
1701 emit_event (buf, TYPE_GC_FINALIZE_START | TYPE_GC);
1707 finalize_end (MonoProfiler *prof)
1709 ENTER_LOG (&finalize_ends_ctr, buf,
1710 EVENT_SIZE /* event */
1713 emit_event (buf, TYPE_GC_FINALIZE_END | TYPE_GC);
1719 finalize_object_begin (MonoProfiler *prof, MonoObject *obj)
1721 ENTER_LOG (&finalize_object_begins_ctr, buf,
1722 EVENT_SIZE /* event */ +
1723 LEB128_SIZE /* obj */
1726 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_START | TYPE_GC);
1727 emit_obj (buf, obj);
1733 finalize_object_end (MonoProfiler *prof, MonoObject *obj)
1735 ENTER_LOG (&finalize_object_ends_ctr, buf,
1736 EVENT_SIZE /* event */ +
1737 LEB128_SIZE /* obj */
1740 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_END | TYPE_GC);
1741 emit_obj (buf, obj);
1747 push_nesting (char *p, MonoClass *klass)
1752 nesting = mono_class_get_nesting_type (klass);
1754 p = push_nesting (p, nesting);
1758 name = mono_class_get_name (klass);
1759 nspace = mono_class_get_namespace (klass);
1762 p += strlen (nspace);
1772 type_name (MonoClass *klass)
1776 push_nesting (buf, klass);
1777 p = (char *) g_malloc (strlen (buf) + 1);
1783 image_loaded (MonoProfiler *prof, MonoImage *image, int result)
1785 if (result != MONO_PROFILE_OK)
1788 const char *name = mono_image_get_filename (image);
1789 int nlen = strlen (name) + 1;
1791 ENTER_LOG (&image_loads_ctr, logbuffer,
1792 EVENT_SIZE /* event */ +
1793 BYTE_SIZE /* type */ +
1794 LEB128_SIZE /* image */ +
1798 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1799 emit_byte (logbuffer, TYPE_IMAGE);
1800 emit_ptr (logbuffer, image);
1801 memcpy (logbuffer->cursor, name, nlen);
1802 logbuffer->cursor += nlen;
1808 image_unloaded (MonoProfiler *prof, MonoImage *image)
1810 const char *name = mono_image_get_filename (image);
1811 int nlen = strlen (name) + 1;
1813 ENTER_LOG (&image_unloads_ctr, logbuffer,
1814 EVENT_SIZE /* event */ +
1815 BYTE_SIZE /* type */ +
1816 LEB128_SIZE /* image */ +
1820 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1821 emit_byte (logbuffer, TYPE_IMAGE);
1822 emit_ptr (logbuffer, image);
1823 memcpy (logbuffer->cursor, name, nlen);
1824 logbuffer->cursor += nlen;
1830 assembly_loaded (MonoProfiler *prof, MonoAssembly *assembly, int result)
1832 if (result != MONO_PROFILE_OK)
1835 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1836 int nlen = strlen (name) + 1;
1838 ENTER_LOG (&assembly_loads_ctr, logbuffer,
1839 EVENT_SIZE /* event */ +
1840 BYTE_SIZE /* type */ +
1841 LEB128_SIZE /* assembly */ +
1845 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1846 emit_byte (logbuffer, TYPE_ASSEMBLY);
1847 emit_ptr (logbuffer, assembly);
1848 memcpy (logbuffer->cursor, name, nlen);
1849 logbuffer->cursor += nlen;
1857 assembly_unloaded (MonoProfiler *prof, MonoAssembly *assembly)
1859 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1860 int nlen = strlen (name) + 1;
1862 ENTER_LOG (&assembly_unloads_ctr, logbuffer,
1863 EVENT_SIZE /* event */ +
1864 BYTE_SIZE /* type */ +
1865 LEB128_SIZE /* assembly */ +
1869 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1870 emit_byte (logbuffer, TYPE_ASSEMBLY);
1871 emit_ptr (logbuffer, assembly);
1872 memcpy (logbuffer->cursor, name, nlen);
1873 logbuffer->cursor += nlen;
1881 class_loaded (MonoProfiler *prof, MonoClass *klass, int result)
1883 if (result != MONO_PROFILE_OK)
1888 if (InterlockedRead (&runtime_inited))
1889 name = mono_type_get_name (mono_class_get_type (klass));
1891 name = type_name (klass);
1893 int nlen = strlen (name) + 1;
1894 MonoImage *image = mono_class_get_image (klass);
1896 ENTER_LOG (&class_loads_ctr, logbuffer,
1897 EVENT_SIZE /* event */ +
1898 BYTE_SIZE /* type */ +
1899 LEB128_SIZE /* klass */ +
1900 LEB128_SIZE /* image */ +
1904 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1905 emit_byte (logbuffer, TYPE_CLASS);
1906 emit_ptr (logbuffer, klass);
1907 emit_ptr (logbuffer, image);
1908 memcpy (logbuffer->cursor, name, nlen);
1909 logbuffer->cursor += nlen;
1920 class_unloaded (MonoProfiler *prof, MonoClass *klass)
1924 if (InterlockedRead (&runtime_inited))
1925 name = mono_type_get_name (mono_class_get_type (klass));
1927 name = type_name (klass);
1929 int nlen = strlen (name) + 1;
1930 MonoImage *image = mono_class_get_image (klass);
1932 ENTER_LOG (&class_unloads_ctr, logbuffer,
1933 EVENT_SIZE /* event */ +
1934 BYTE_SIZE /* type */ +
1935 LEB128_SIZE /* klass */ +
1936 LEB128_SIZE /* image */ +
1940 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1941 emit_byte (logbuffer, TYPE_CLASS);
1942 emit_ptr (logbuffer, klass);
1943 emit_ptr (logbuffer, image);
1944 memcpy (logbuffer->cursor, name, nlen);
1945 logbuffer->cursor += nlen;
1955 static void process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method);
1958 method_enter (MonoProfiler *prof, MonoMethod *method)
1960 process_method_enter_coverage (prof, method);
1962 if (!only_coverage && PROF_TLS_GET ()->call_depth++ <= max_call_depth) {
1963 ENTER_LOG (&method_entries_ctr, logbuffer,
1964 EVENT_SIZE /* event */ +
1965 LEB128_SIZE /* method */
1968 emit_event (logbuffer, TYPE_ENTER | TYPE_METHOD);
1969 emit_method (logbuffer, method);
1976 method_leave (MonoProfiler *prof, MonoMethod *method)
1978 if (!only_coverage && --PROF_TLS_GET ()->call_depth <= max_call_depth) {
1979 ENTER_LOG (&method_exits_ctr, logbuffer,
1980 EVENT_SIZE /* event */ +
1981 LEB128_SIZE /* method */
1984 emit_event (logbuffer, TYPE_LEAVE | TYPE_METHOD);
1985 emit_method (logbuffer, method);
1992 method_exc_leave (MonoProfiler *prof, MonoMethod *method)
1994 if (!only_coverage && !nocalls && --PROF_TLS_GET ()->call_depth <= max_call_depth) {
1995 ENTER_LOG (&method_exception_exits_ctr, logbuffer,
1996 EVENT_SIZE /* event */ +
1997 LEB128_SIZE /* method */
2000 emit_event (logbuffer, TYPE_EXC_LEAVE | TYPE_METHOD);
2001 emit_method (logbuffer, method);
2008 method_jitted (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *ji, int result)
2010 if (result != MONO_PROFILE_OK)
2013 register_method_local (method, ji);
2015 process_requests ();
2019 code_buffer_new (MonoProfiler *prof, void *buffer, int size, MonoProfilerCodeBufferType type, void *data)
2024 if (type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE) {
2025 name = (char *) data;
2026 nlen = strlen (name) + 1;
2032 ENTER_LOG (&code_buffers_ctr, logbuffer,
2033 EVENT_SIZE /* event */ +
2034 BYTE_SIZE /* type */ +
2035 LEB128_SIZE /* buffer */ +
2036 LEB128_SIZE /* size */ +
2042 emit_event (logbuffer, TYPE_JITHELPER | TYPE_RUNTIME);
2043 emit_byte (logbuffer, type);
2044 emit_ptr (logbuffer, buffer);
2045 emit_value (logbuffer, size);
2048 memcpy (logbuffer->cursor, name, nlen);
2049 logbuffer->cursor += nlen;
2056 throw_exc (MonoProfiler *prof, MonoObject *object)
2058 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_THROW_BT : 0;
2064 ENTER_LOG (&exception_throws_ctr, logbuffer,
2065 EVENT_SIZE /* event */ +
2066 LEB128_SIZE /* object */ +
2068 LEB128_SIZE /* count */ +
2070 LEB128_SIZE /* method */
2075 emit_event (logbuffer, do_bt | TYPE_EXCEPTION);
2076 emit_obj (logbuffer, object);
2079 emit_bt (prof, logbuffer, &data);
2085 clause_exc (MonoProfiler *prof, MonoMethod *method, int clause_type, int clause_num)
2087 ENTER_LOG (&exception_clauses_ctr, logbuffer,
2088 EVENT_SIZE /* event */ +
2089 BYTE_SIZE /* clause type */ +
2090 LEB128_SIZE /* clause num */ +
2091 LEB128_SIZE /* method */
2094 emit_event (logbuffer, TYPE_EXCEPTION | TYPE_CLAUSE);
2095 emit_byte (logbuffer, clause_type);
2096 emit_value (logbuffer, clause_num);
2097 emit_method (logbuffer, method);
2103 monitor_event (MonoProfiler *profiler, MonoObject *object, MonoProfilerMonitorEvent event)
2105 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces && event == MONO_PROFILER_MONITOR_CONTENTION) ? TYPE_MONITOR_BT : 0;
2114 case MONO_PROFILER_MONITOR_CONTENTION:
2115 ctr = &monitor_contentions_ctr;
2117 case MONO_PROFILER_MONITOR_DONE:
2118 ctr = &monitor_acquisitions_ctr;
2120 case MONO_PROFILER_MONITOR_FAIL:
2121 ctr = &monitor_failures_ctr;
2124 g_assert_not_reached ();
2128 ENTER_LOG (ctr, logbuffer,
2129 EVENT_SIZE /* event */ +
2130 LEB128_SIZE /* object */ +
2132 LEB128_SIZE /* count */ +
2134 LEB128_SIZE /* method */
2139 emit_event (logbuffer, (event << 4) | do_bt | TYPE_MONITOR);
2140 emit_obj (logbuffer, object);
2143 emit_bt (profiler, logbuffer, &data);
2149 thread_start (MonoProfiler *prof, uintptr_t tid)
2151 init_thread (prof, TRUE);
2153 ENTER_LOG (&thread_starts_ctr, logbuffer,
2154 EVENT_SIZE /* event */ +
2155 BYTE_SIZE /* type */ +
2156 LEB128_SIZE /* tid */
2159 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2160 emit_byte (logbuffer, TYPE_THREAD);
2161 emit_ptr (logbuffer, (void*) tid);
2167 thread_end (MonoProfiler *prof, uintptr_t tid)
2169 ENTER_LOG (&thread_ends_ctr, logbuffer,
2170 EVENT_SIZE /* event */ +
2171 BYTE_SIZE /* type */ +
2172 LEB128_SIZE /* tid */
2175 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2176 emit_byte (logbuffer, TYPE_THREAD);
2177 emit_ptr (logbuffer, (void*) tid);
2179 EXIT_LOG_EXPLICIT (NO_SEND, NO_REQUESTS);
2181 MonoProfilerThread *thread = PROF_TLS_GET ();
2183 thread->ended = TRUE;
2184 remove_thread (thread);
2186 PROF_TLS_SET (NULL);
2190 thread_name (MonoProfiler *prof, uintptr_t tid, const char *name)
2192 int len = strlen (name) + 1;
2194 ENTER_LOG (&thread_names_ctr, logbuffer,
2195 EVENT_SIZE /* event */ +
2196 BYTE_SIZE /* type */ +
2197 LEB128_SIZE /* tid */ +
2201 emit_event (logbuffer, TYPE_METADATA);
2202 emit_byte (logbuffer, TYPE_THREAD);
2203 emit_ptr (logbuffer, (void*)tid);
2204 memcpy (logbuffer->cursor, name, len);
2205 logbuffer->cursor += len;
2211 domain_loaded (MonoProfiler *prof, MonoDomain *domain, int result)
2213 if (result != MONO_PROFILE_OK)
2216 ENTER_LOG (&domain_loads_ctr, logbuffer,
2217 EVENT_SIZE /* event */ +
2218 BYTE_SIZE /* type */ +
2219 LEB128_SIZE /* domain id */
2222 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2223 emit_byte (logbuffer, TYPE_DOMAIN);
2224 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2230 domain_unloaded (MonoProfiler *prof, MonoDomain *domain)
2232 ENTER_LOG (&domain_unloads_ctr, logbuffer,
2233 EVENT_SIZE /* event */ +
2234 BYTE_SIZE /* type */ +
2235 LEB128_SIZE /* domain id */
2238 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2239 emit_byte (logbuffer, TYPE_DOMAIN);
2240 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2246 domain_name (MonoProfiler *prof, MonoDomain *domain, const char *name)
2248 int nlen = strlen (name) + 1;
2250 ENTER_LOG (&domain_names_ctr, logbuffer,
2251 EVENT_SIZE /* event */ +
2252 BYTE_SIZE /* type */ +
2253 LEB128_SIZE /* domain id */ +
2257 emit_event (logbuffer, TYPE_METADATA);
2258 emit_byte (logbuffer, TYPE_DOMAIN);
2259 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2260 memcpy (logbuffer->cursor, name, nlen);
2261 logbuffer->cursor += nlen;
2267 context_loaded (MonoProfiler *prof, MonoAppContext *context)
2269 ENTER_LOG (&context_loads_ctr, logbuffer,
2270 EVENT_SIZE /* event */ +
2271 BYTE_SIZE /* type */ +
2272 LEB128_SIZE /* context id */ +
2273 LEB128_SIZE /* domain id */
2276 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2277 emit_byte (logbuffer, TYPE_CONTEXT);
2278 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2279 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2285 context_unloaded (MonoProfiler *prof, MonoAppContext *context)
2287 ENTER_LOG (&context_unloads_ctr, logbuffer,
2288 EVENT_SIZE /* event */ +
2289 BYTE_SIZE /* type */ +
2290 LEB128_SIZE /* context id */ +
2291 LEB128_SIZE /* domain id */
2294 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2295 emit_byte (logbuffer, TYPE_CONTEXT);
2296 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2297 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2310 MonoLockFreeQueueNode node;
2316 AsyncFrameInfo frames [MONO_ZERO_LEN_ARRAY];
2320 async_walk_stack (MonoMethod *method, MonoDomain *domain, void *base_address, int offset, void *data)
2322 SampleHit *sample = (SampleHit *) data;
2324 if (sample->count < num_frames) {
2325 int i = sample->count;
2327 sample->frames [i].method = method;
2328 sample->frames [i].domain = domain;
2329 sample->frames [i].base_address = base_address;
2330 sample->frames [i].offset = offset;
2335 return sample->count == num_frames;
2338 #define SAMPLE_SLOT_SIZE(FRAMES) (sizeof (SampleHit) + sizeof (AsyncFrameInfo) * (FRAMES - MONO_ZERO_LEN_ARRAY))
2339 #define SAMPLE_BLOCK_SIZE (mono_pagesize ())
2342 enqueue_sample_hit (gpointer p)
2344 SampleHit *sample = p;
2346 mono_lock_free_queue_node_unpoison (&sample->node);
2347 mono_lock_free_queue_enqueue (&sample->prof->dumper_queue, &sample->node);
2348 mono_os_sem_post (&sample->prof->dumper_queue_sem);
2352 mono_sample_hit (MonoProfiler *profiler, unsigned char *ip, void *context)
2355 * Please note: We rely on the runtime loading the profiler with
2356 * MONO_DL_EAGER (RTLD_NOW) so that references to runtime functions within
2357 * this function (and its siblings) are resolved when the profiler is
2358 * loaded. Otherwise, we would potentially invoke the dynamic linker when
2359 * invoking runtime functions, which is not async-signal-safe.
2362 if (InterlockedRead (&in_shutdown))
2365 SampleHit *sample = (SampleHit *) mono_lock_free_queue_dequeue (&profiler->sample_reuse_queue);
2369 * If we're out of reusable sample events and we're not allowed to
2370 * allocate more, we have no choice but to drop the event.
2372 if (InterlockedRead (&sample_allocations_ctr) >= max_allocated_sample_hits)
2375 sample = mono_lock_free_alloc (&profiler->sample_allocator);
2376 sample->prof = profiler;
2377 mono_lock_free_queue_node_init (&sample->node, TRUE);
2379 InterlockedIncrement (&sample_allocations_ctr);
2383 mono_stack_walk_async_safe (&async_walk_stack, context, sample);
2385 sample->time = current_time ();
2386 sample->tid = thread_id ();
2389 mono_thread_hazardous_try_free (sample, enqueue_sample_hit);
2392 static uintptr_t *code_pages = 0;
2393 static int num_code_pages = 0;
2394 static int size_code_pages = 0;
2395 #define CPAGE_SHIFT (9)
2396 #define CPAGE_SIZE (1 << CPAGE_SHIFT)
2397 #define CPAGE_MASK (~(CPAGE_SIZE - 1))
2398 #define CPAGE_ADDR(p) ((p) & CPAGE_MASK)
2401 add_code_page (uintptr_t *hash, uintptr_t hsize, uintptr_t page)
2404 uintptr_t start_pos;
2405 start_pos = (page >> CPAGE_SHIFT) % hsize;
2408 if (hash [i] && CPAGE_ADDR (hash [i]) == CPAGE_ADDR (page)) {
2410 } else if (!hash [i]) {
2417 } while (i != start_pos);
2418 /* should not happen */
2419 printf ("failed code page store\n");
2424 add_code_pointer (uintptr_t ip)
2427 if (num_code_pages * 2 >= size_code_pages) {
2429 uintptr_t old_size = size_code_pages;
2430 size_code_pages *= 2;
2431 if (size_code_pages == 0)
2432 size_code_pages = 16;
2433 n = (uintptr_t *) g_calloc (sizeof (uintptr_t) * size_code_pages, 1);
2434 for (i = 0; i < old_size; ++i) {
2436 add_code_page (n, size_code_pages, code_pages [i]);
2439 g_free (code_pages);
2442 num_code_pages += add_code_page (code_pages, size_code_pages, ip & CPAGE_MASK);
2445 /* ELF code crashes on some systems. */
2446 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2449 dump_ubin (MonoProfiler *prof, const char *filename, uintptr_t load_addr, uint64_t offset, uintptr_t size)
2451 int len = strlen (filename) + 1;
2453 ENTER_LOG (&sample_ubins_ctr, logbuffer,
2454 EVENT_SIZE /* event */ +
2455 LEB128_SIZE /* load address */ +
2456 LEB128_SIZE /* offset */ +
2457 LEB128_SIZE /* size */ +
2458 nlen /* file name */
2461 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_UBIN);
2462 emit_svalue (logbuffer, load_addr);
2463 emit_uvalue (logbuffer, offset);
2464 emit_uvalue (logbuffer, size);
2465 memcpy (logbuffer->cursor, filename, len);
2466 logbuffer->cursor += len;
2468 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
2473 dump_usym (MonoProfiler *prof, const char *name, uintptr_t value, uintptr_t size)
2475 int len = strlen (name) + 1;
2477 ENTER_LOG (&sample_usyms_ctr, logbuffer,
2478 EVENT_SIZE /* event */ +
2479 LEB128_SIZE /* value */ +
2480 LEB128_SIZE /* size */ +
2484 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_USYM);
2485 emit_ptr (logbuffer, (void*)value);
2486 emit_value (logbuffer, size);
2487 memcpy (logbuffer->cursor, name, len);
2488 logbuffer->cursor += len;
2490 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
2493 /* ELF code crashes on some systems. */
2494 //#if defined(ELFMAG0)
2497 #if SIZEOF_VOID_P == 4
2498 #define ELF_WSIZE 32
2500 #define ELF_WSIZE 64
2503 #define ElfW(type) _ElfW (Elf, ELF_WSIZE, type)
2504 #define _ElfW(e,w,t) _ElfW_1 (e, w, _##t)
2505 #define _ElfW_1(e,w,t) e##w##t
2509 dump_elf_symbols (MonoProfiler *prof, ElfW(Sym) *symbols, int num_symbols, const char *strtab, void *load_addr)
2512 for (i = 0; i < num_symbols; ++i) {
2514 sym = strtab + symbols [i].st_name;
2515 if (!symbols [i].st_name || !symbols [i].st_size || (symbols [i].st_info & 0xf) != STT_FUNC)
2517 //printf ("symbol %s at %d\n", sym, symbols [i].st_value);
2518 dump_usym (sym, (uintptr_t)load_addr + symbols [i].st_value, symbols [i].st_size);
2523 read_elf_symbols (MonoProfiler *prof, const char *filename, void *load_addr)
2530 ElfW(Shdr) *sheader;
2531 ElfW(Shdr) *shstrtabh;
2532 ElfW(Shdr) *symtabh = NULL;
2533 ElfW(Shdr) *strtabh = NULL;
2534 ElfW(Sym) *symbols = NULL;
2538 fd = open (filename, O_RDONLY);
2541 if (fstat (fd, &statb) != 0) {
2545 file_size = statb.st_size;
2546 data = mmap (NULL, file_size, PROT_READ, MAP_PRIVATE, fd, 0);
2548 if (data == MAP_FAILED)
2551 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2552 header->e_ident [EI_MAG1] != ELFMAG1 ||
2553 header->e_ident [EI_MAG2] != ELFMAG2 ||
2554 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2555 munmap (data, file_size);
2558 sheader = (void*)((char*)data + header->e_shoff);
2559 shstrtabh = (void*)((char*)sheader + (header->e_shentsize * header->e_shstrndx));
2560 strtab = (const char*)data + shstrtabh->sh_offset;
2561 for (i = 0; i < header->e_shnum; ++i) {
2562 //printf ("section header: %d\n", sheader->sh_type);
2563 if (sheader->sh_type == SHT_SYMTAB) {
2565 strtabh = (void*)((char*)data + header->e_shoff + sheader->sh_link * header->e_shentsize);
2566 /*printf ("symtab section header: %d, .strstr: %d\n", i, sheader->sh_link);*/
2569 sheader = (void*)((char*)sheader + header->e_shentsize);
2571 if (!symtabh || !strtabh) {
2572 munmap (data, file_size);
2575 strtab = (const char*)data + strtabh->sh_offset;
2576 num_symbols = symtabh->sh_size / symtabh->sh_entsize;
2577 symbols = (void*)((char*)data + symtabh->sh_offset);
2578 dump_elf_symbols (symbols, num_symbols, strtab, load_addr);
2579 munmap (data, file_size);
2584 /* ELF code crashes on some systems. */
2585 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2588 elf_dl_callback (struct dl_phdr_info *info, size_t size, void *data)
2590 MonoProfiler *prof = data;
2592 const char *filename;
2594 char *a = (void*)info->dlpi_addr;
2596 ElfW(Dyn) *dyn = NULL;
2597 ElfW(Sym) *symtab = NULL;
2598 ElfW(Word) *hash_table = NULL;
2599 ElfW(Ehdr) *header = NULL;
2600 const char* strtab = NULL;
2601 for (obj = prof->binary_objects; obj; obj = obj->next) {
2605 filename = info->dlpi_name;
2608 if (!info->dlpi_addr && !filename [0]) {
2609 int l = readlink ("/proc/self/exe", buf, sizeof (buf) - 1);
2615 obj = g_calloc (sizeof (BinaryObject), 1);
2616 obj->addr = (void*)info->dlpi_addr;
2617 obj->name = pstrdup (filename);
2618 obj->next = prof->binary_objects;
2619 prof->binary_objects = obj;
2620 //printf ("loaded file: %s at %p, segments: %d\n", filename, (void*)info->dlpi_addr, info->dlpi_phnum);
2622 for (i = 0; i < info->dlpi_phnum; ++i) {
2623 //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);
2624 if (info->dlpi_phdr[i].p_type == PT_LOAD && !header) {
2625 header = (ElfW(Ehdr)*)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2626 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2627 header->e_ident [EI_MAG1] != ELFMAG1 ||
2628 header->e_ident [EI_MAG2] != ELFMAG2 ||
2629 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2632 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);
2633 } else if (info->dlpi_phdr[i].p_type == PT_DYNAMIC) {
2634 dyn = (ElfW(Dyn) *)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2637 if (read_elf_symbols (prof, filename, (void*)info->dlpi_addr))
2639 if (!info->dlpi_name || !info->dlpi_name[0])
2643 for (i = 0; dyn [i].d_tag != DT_NULL; ++i) {
2644 if (dyn [i].d_tag == DT_SYMTAB) {
2645 if (symtab && do_debug)
2646 printf ("multiple symtabs: %d\n", i);
2647 symtab = (ElfW(Sym) *)(a + dyn [i].d_un.d_ptr);
2648 } else if (dyn [i].d_tag == DT_HASH) {
2649 hash_table = (ElfW(Word) *)(a + dyn [i].d_un.d_ptr);
2650 } else if (dyn [i].d_tag == DT_STRTAB) {
2651 strtab = (const char*)(a + dyn [i].d_un.d_ptr);
2656 num_sym = hash_table [1];
2657 dump_elf_symbols (prof, symtab, num_sym, strtab, (void*)info->dlpi_addr);
2662 load_binaries (MonoProfiler *prof)
2664 dl_iterate_phdr (elf_dl_callback, prof);
2669 load_binaries (MonoProfiler *prof)
2676 symbol_for (uintptr_t code)
2679 void *ip = (void*)code;
2681 if (dladdr (ip, &di)) {
2683 return di.dli_sname;
2686 names = backtrace_symbols (&ip, 1);
2688 const char* p = names [0];
2699 dump_unmanaged_coderefs (MonoProfiler *prof)
2702 const char* last_symbol;
2703 uintptr_t addr, page_end;
2705 if (load_binaries (prof))
2707 for (i = 0; i < size_code_pages; ++i) {
2709 if (!code_pages [i] || code_pages [i] & 1)
2712 addr = CPAGE_ADDR (code_pages [i]);
2713 page_end = addr + CPAGE_SIZE;
2714 code_pages [i] |= 1;
2715 /* we dump the symbols for the whole page */
2716 for (; addr < page_end; addr += 16) {
2717 sym = symbol_for (addr);
2718 if (sym && sym == last_symbol)
2723 dump_usym (prof, sym, addr, 0); /* let's not guess the size */
2724 //printf ("found symbol at %p: %s\n", (void*)addr, sym);
2729 typedef struct MonoCounterAgent {
2730 MonoCounter *counter;
2731 // MonoCounterAgent specific data :
2736 struct MonoCounterAgent *next;
2739 static MonoCounterAgent* counters;
2740 static int counters_index = 1;
2741 static mono_mutex_t counters_mutex;
2744 counters_add_agent (MonoCounter *counter)
2746 if (InterlockedRead (&in_shutdown))
2749 MonoCounterAgent *agent, *item;
2751 mono_os_mutex_lock (&counters_mutex);
2753 for (agent = counters; agent; agent = agent->next) {
2754 if (agent->counter == counter) {
2755 agent->value_size = 0;
2757 g_free (agent->value);
2758 agent->value = NULL;
2764 agent = (MonoCounterAgent *) g_malloc (sizeof (MonoCounterAgent));
2765 agent->counter = counter;
2766 agent->value = NULL;
2767 agent->value_size = 0;
2768 agent->index = counters_index++;
2782 mono_os_mutex_unlock (&counters_mutex);
2786 counters_init_foreach_callback (MonoCounter *counter, gpointer data)
2788 counters_add_agent (counter);
2793 counters_init (MonoProfiler *profiler)
2795 mono_os_mutex_init (&counters_mutex);
2797 mono_counters_on_register (&counters_add_agent);
2798 mono_counters_foreach (counters_init_foreach_callback, NULL);
2802 counters_emit (MonoProfiler *profiler)
2804 MonoCounterAgent *agent;
2807 EVENT_SIZE /* event */ +
2808 LEB128_SIZE /* len */
2811 mono_os_mutex_lock (&counters_mutex);
2813 for (agent = counters; agent; agent = agent->next) {
2818 LEB128_SIZE /* section */ +
2819 strlen (mono_counter_get_name (agent->counter)) + 1 /* name */ +
2820 BYTE_SIZE /* type */ +
2821 BYTE_SIZE /* unit */ +
2822 BYTE_SIZE /* variance */ +
2823 LEB128_SIZE /* index */
2832 ENTER_LOG (&counter_descriptors_ctr, logbuffer, size);
2834 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
2835 emit_value (logbuffer, len);
2837 for (agent = counters; agent; agent = agent->next) {
2843 name = mono_counter_get_name (agent->counter);
2844 emit_value (logbuffer, mono_counter_get_section (agent->counter));
2845 emit_string (logbuffer, name, strlen (name) + 1);
2846 emit_byte (logbuffer, mono_counter_get_type (agent->counter));
2847 emit_byte (logbuffer, mono_counter_get_unit (agent->counter));
2848 emit_byte (logbuffer, mono_counter_get_variance (agent->counter));
2849 emit_value (logbuffer, agent->index);
2854 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
2857 mono_os_mutex_unlock (&counters_mutex);
2861 counters_sample (MonoProfiler *profiler, uint64_t timestamp)
2863 MonoCounterAgent *agent;
2864 MonoCounter *counter;
2870 counters_emit (profiler);
2873 buffer = g_calloc (1, buffer_size);
2875 mono_os_mutex_lock (&counters_mutex);
2878 EVENT_SIZE /* event */
2881 for (agent = counters; agent; agent = agent->next) {
2883 LEB128_SIZE /* index */ +
2884 BYTE_SIZE /* type */ +
2885 mono_counter_get_size (agent->counter) /* value */
2890 LEB128_SIZE /* stop marker */
2893 ENTER_LOG (&counter_samples_ctr, logbuffer, size);
2895 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
2897 for (agent = counters; agent; agent = agent->next) {
2900 counter = agent->counter;
2902 size = mono_counter_get_size (counter);
2904 if (size > buffer_size) {
2906 buffer = g_realloc (buffer, buffer_size);
2909 memset (buffer, 0, buffer_size);
2911 g_assert (mono_counters_sample (counter, buffer, size));
2913 type = mono_counter_get_type (counter);
2915 if (!agent->value) {
2916 agent->value = g_calloc (1, size);
2917 agent->value_size = size;
2919 if (type == MONO_COUNTER_STRING) {
2920 if (strcmp (agent->value, buffer) == 0)
2923 if (agent->value_size == size && memcmp (agent->value, buffer, size) == 0)
2928 emit_uvalue (logbuffer, agent->index);
2929 emit_byte (logbuffer, type);
2931 case MONO_COUNTER_INT:
2932 #if SIZEOF_VOID_P == 4
2933 case MONO_COUNTER_WORD:
2935 emit_svalue (logbuffer, *(int*)buffer - *(int*)agent->value);
2937 case MONO_COUNTER_UINT:
2938 emit_uvalue (logbuffer, *(guint*)buffer - *(guint*)agent->value);
2940 case MONO_COUNTER_TIME_INTERVAL:
2941 case MONO_COUNTER_LONG:
2942 #if SIZEOF_VOID_P == 8
2943 case MONO_COUNTER_WORD:
2945 emit_svalue (logbuffer, *(gint64*)buffer - *(gint64*)agent->value);
2947 case MONO_COUNTER_ULONG:
2948 emit_uvalue (logbuffer, *(guint64*)buffer - *(guint64*)agent->value);
2950 case MONO_COUNTER_DOUBLE:
2951 emit_double (logbuffer, *(double*)buffer);
2953 case MONO_COUNTER_STRING:
2955 emit_byte (logbuffer, 0);
2957 emit_byte (logbuffer, 1);
2958 emit_string (logbuffer, (char*)buffer, size);
2962 g_assert_not_reached ();
2965 if (type == MONO_COUNTER_STRING && size > agent->value_size) {
2966 agent->value = g_realloc (agent->value, size);
2967 agent->value_size = size;
2971 memcpy (agent->value, buffer, size);
2975 emit_value (logbuffer, 0);
2977 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
2979 mono_os_mutex_unlock (&counters_mutex);
2982 typedef struct _PerfCounterAgent PerfCounterAgent;
2983 struct _PerfCounterAgent {
2984 PerfCounterAgent *next;
2986 char *category_name;
2995 static PerfCounterAgent *perfcounters = NULL;
2998 perfcounters_emit (MonoProfiler *profiler)
3000 PerfCounterAgent *pcagent;
3003 EVENT_SIZE /* event */ +
3004 LEB128_SIZE /* len */
3007 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3008 if (pcagent->emitted)
3012 LEB128_SIZE /* section */ +
3013 strlen (pcagent->category_name) + 1 /* category name */ +
3014 strlen (pcagent->name) + 1 /* name */ +
3015 BYTE_SIZE /* type */ +
3016 BYTE_SIZE /* unit */ +
3017 BYTE_SIZE /* variance */ +
3018 LEB128_SIZE /* index */
3027 ENTER_LOG (&perfcounter_descriptors_ctr, logbuffer, size);
3029 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
3030 emit_value (logbuffer, len);
3032 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3033 if (pcagent->emitted)
3036 emit_value (logbuffer, MONO_COUNTER_PERFCOUNTERS);
3037 emit_string (logbuffer, pcagent->category_name, strlen (pcagent->category_name) + 1);
3038 emit_string (logbuffer, pcagent->name, strlen (pcagent->name) + 1);
3039 emit_byte (logbuffer, MONO_COUNTER_LONG);
3040 emit_byte (logbuffer, MONO_COUNTER_RAW);
3041 emit_byte (logbuffer, MONO_COUNTER_VARIABLE);
3042 emit_value (logbuffer, pcagent->index);
3044 pcagent->emitted = 1;
3047 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
3051 perfcounters_foreach (char *category_name, char *name, unsigned char type, gint64 value, gpointer user_data)
3053 PerfCounterAgent *pcagent;
3055 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3056 if (strcmp (pcagent->category_name, category_name) != 0 || strcmp (pcagent->name, name) != 0)
3058 if (pcagent->value == value)
3061 pcagent->value = value;
3062 pcagent->updated = 1;
3063 pcagent->deleted = 0;
3067 pcagent = g_new0 (PerfCounterAgent, 1);
3068 pcagent->next = perfcounters;
3069 pcagent->index = counters_index++;
3070 pcagent->category_name = g_strdup (category_name);
3071 pcagent->name = g_strdup (name);
3072 pcagent->type = (int) type;
3073 pcagent->value = value;
3074 pcagent->emitted = 0;
3075 pcagent->updated = 1;
3076 pcagent->deleted = 0;
3078 perfcounters = pcagent;
3084 perfcounters_sample (MonoProfiler *profiler, uint64_t timestamp)
3086 PerfCounterAgent *pcagent;
3090 mono_os_mutex_lock (&counters_mutex);
3092 /* mark all perfcounters as deleted, foreach will unmark them as necessary */
3093 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next)
3094 pcagent->deleted = 1;
3096 mono_perfcounter_foreach (perfcounters_foreach, perfcounters);
3098 perfcounters_emit (profiler);
3101 EVENT_SIZE /* event */
3104 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3105 if (pcagent->deleted || !pcagent->updated)
3109 LEB128_SIZE /* index */ +
3110 BYTE_SIZE /* type */ +
3111 LEB128_SIZE /* value */
3121 LEB128_SIZE /* stop marker */
3124 ENTER_LOG (&perfcounter_samples_ctr, logbuffer, size);
3126 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
3128 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3129 if (pcagent->deleted || !pcagent->updated)
3131 emit_uvalue (logbuffer, pcagent->index);
3132 emit_byte (logbuffer, MONO_COUNTER_LONG);
3133 emit_svalue (logbuffer, pcagent->value);
3135 pcagent->updated = 0;
3138 emit_value (logbuffer, 0);
3140 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
3143 mono_os_mutex_unlock (&counters_mutex);
3147 counters_and_perfcounters_sample (MonoProfiler *prof)
3149 uint64_t now = current_time ();
3151 counters_sample (prof, now);
3152 perfcounters_sample (prof, now);
3155 #define COVERAGE_DEBUG(x) if (debug_coverage) {x}
3156 static mono_mutex_t coverage_mutex;
3157 static MonoConcurrentHashTable *coverage_methods = NULL;
3158 static MonoConcurrentHashTable *coverage_assemblies = NULL;
3159 static MonoConcurrentHashTable *coverage_classes = NULL;
3161 static MonoConcurrentHashTable *filtered_classes = NULL;
3162 static MonoConcurrentHashTable *entered_methods = NULL;
3163 static MonoConcurrentHashTable *image_to_methods = NULL;
3164 static MonoConcurrentHashTable *suppressed_assemblies = NULL;
3165 static gboolean coverage_initialized = FALSE;
3167 static GPtrArray *coverage_data = NULL;
3168 static int previous_offset = 0;
3171 MonoLockFreeQueueNode node;
3184 free_coverage_entry (gpointer data, gpointer userdata)
3186 CoverageEntry *entry = (CoverageEntry *)data;
3187 g_free (entry->filename);
3192 obtain_coverage_for_method (MonoProfiler *prof, const MonoProfileCoverageEntry *entry)
3194 int offset = entry->iloffset - previous_offset;
3195 CoverageEntry *e = g_new (CoverageEntry, 1);
3197 previous_offset = entry->iloffset;
3200 e->counter = entry->counter;
3201 e->filename = g_strdup(entry->filename ? entry->filename : "");
3202 e->line = entry->line;
3203 e->column = entry->col;
3205 g_ptr_array_add (coverage_data, e);
3209 parse_generic_type_names(char *name)
3211 char *new_name, *ret;
3212 int within_generic_declaration = 0, generic_members = 1;
3214 if (name == NULL || *name == '\0')
3215 return g_strdup ("");
3217 if (!(ret = new_name = (char *) g_calloc (strlen (name) * 4 + 1, sizeof (char))))
3223 within_generic_declaration = 1;
3227 within_generic_declaration = 0;
3229 if (*(name - 1) != '<') {
3231 *new_name++ = '0' + generic_members;
3233 memcpy (new_name, "<>", 8);
3237 generic_members = 0;
3245 if (!within_generic_declaration)
3246 *new_name++ = *name;
3255 static int method_id;
3257 build_method_buffer (gpointer key, gpointer value, gpointer userdata)
3259 MonoMethod *method = (MonoMethod *)value;
3260 MonoProfiler *prof = (MonoProfiler *)userdata;
3264 const char *image_name, *method_name, *sig, *first_filename;
3267 previous_offset = 0;
3268 coverage_data = g_ptr_array_new ();
3270 mono_profiler_coverage_get (prof, method, obtain_coverage_for_method);
3272 klass = mono_method_get_class (method);
3273 image = mono_class_get_image (klass);
3274 image_name = mono_image_get_name (image);
3276 sig = mono_signature_get_desc (mono_method_signature (method), TRUE);
3277 class_name = parse_generic_type_names (mono_type_get_name (mono_class_get_type (klass)));
3278 method_name = mono_method_get_name (method);
3280 if (coverage_data->len != 0) {
3281 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[0];
3282 first_filename = entry->filename ? entry->filename : "";
3284 first_filename = "";
3286 image_name = image_name ? image_name : "";
3287 sig = sig ? sig : "";
3288 method_name = method_name ? method_name : "";
3290 ENTER_LOG (&coverage_methods_ctr, logbuffer,
3291 EVENT_SIZE /* event */ +
3292 strlen (image_name) + 1 /* image name */ +
3293 strlen (class_name) + 1 /* class name */ +
3294 strlen (method_name) + 1 /* method name */ +
3295 strlen (sig) + 1 /* signature */ +
3296 strlen (first_filename) + 1 /* first file name */ +
3297 LEB128_SIZE /* token */ +
3298 LEB128_SIZE /* method id */ +
3299 LEB128_SIZE /* entries */
3302 emit_event (logbuffer, TYPE_COVERAGE_METHOD | TYPE_COVERAGE);
3303 emit_string (logbuffer, image_name, strlen (image_name) + 1);
3304 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3305 emit_string (logbuffer, method_name, strlen (method_name) + 1);
3306 emit_string (logbuffer, sig, strlen (sig) + 1);
3307 emit_string (logbuffer, first_filename, strlen (first_filename) + 1);
3309 emit_uvalue (logbuffer, mono_method_get_token (method));
3310 emit_uvalue (logbuffer, method_id);
3311 emit_value (logbuffer, coverage_data->len);
3313 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
3315 for (i = 0; i < coverage_data->len; i++) {
3316 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[i];
3318 ENTER_LOG (&coverage_statements_ctr, logbuffer,
3319 EVENT_SIZE /* event */ +
3320 LEB128_SIZE /* method id */ +
3321 LEB128_SIZE /* offset */ +
3322 LEB128_SIZE /* counter */ +
3323 LEB128_SIZE /* line */ +
3324 LEB128_SIZE /* column */
3327 emit_event (logbuffer, TYPE_COVERAGE_STATEMENT | TYPE_COVERAGE);
3328 emit_uvalue (logbuffer, method_id);
3329 emit_uvalue (logbuffer, entry->offset);
3330 emit_uvalue (logbuffer, entry->counter);
3331 emit_uvalue (logbuffer, entry->line);
3332 emit_uvalue (logbuffer, entry->column);
3334 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
3339 g_free (class_name);
3341 g_ptr_array_foreach (coverage_data, free_coverage_entry, NULL);
3342 g_ptr_array_free (coverage_data, TRUE);
3343 coverage_data = NULL;
3346 /* This empties the queue */
3348 count_queue (MonoLockFreeQueue *queue)
3350 MonoLockFreeQueueNode *node;
3353 while ((node = mono_lock_free_queue_dequeue (queue))) {
3355 mono_thread_hazardous_try_free (node, g_free);
3362 build_class_buffer (gpointer key, gpointer value, gpointer userdata)
3364 MonoClass *klass = (MonoClass *)key;
3365 MonoLockFreeQueue *class_methods = (MonoLockFreeQueue *)value;
3368 const char *assembly_name;
3369 int number_of_methods, partially_covered;
3370 guint fully_covered;
3372 image = mono_class_get_image (klass);
3373 assembly_name = mono_image_get_name (image);
3374 class_name = mono_type_get_name (mono_class_get_type (klass));
3376 assembly_name = assembly_name ? assembly_name : "";
3377 number_of_methods = mono_class_num_methods (klass);
3378 fully_covered = count_queue (class_methods);
3379 /* We don't handle partial covered yet */
3380 partially_covered = 0;
3382 ENTER_LOG (&coverage_classes_ctr, logbuffer,
3383 EVENT_SIZE /* event */ +
3384 strlen (assembly_name) + 1 /* assembly name */ +
3385 strlen (class_name) + 1 /* class name */ +
3386 LEB128_SIZE /* no. methods */ +
3387 LEB128_SIZE /* fully covered */ +
3388 LEB128_SIZE /* partially covered */
3391 emit_event (logbuffer, TYPE_COVERAGE_CLASS | TYPE_COVERAGE);
3392 emit_string (logbuffer, assembly_name, strlen (assembly_name) + 1);
3393 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3394 emit_uvalue (logbuffer, number_of_methods);
3395 emit_uvalue (logbuffer, fully_covered);
3396 emit_uvalue (logbuffer, partially_covered);
3398 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
3400 g_free (class_name);
3404 get_coverage_for_image (MonoImage *image, int *number_of_methods, guint *fully_covered, int *partially_covered)
3406 MonoLockFreeQueue *image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3408 *number_of_methods = mono_image_get_table_rows (image, MONO_TABLE_METHOD);
3410 *fully_covered = count_queue (image_methods);
3414 // FIXME: We don't handle partially covered yet.
3415 *partially_covered = 0;
3419 build_assembly_buffer (gpointer key, gpointer value, gpointer userdata)
3421 MonoAssembly *assembly = (MonoAssembly *)value;
3422 MonoImage *image = mono_assembly_get_image (assembly);
3423 const char *name, *guid, *filename;
3424 int number_of_methods = 0, partially_covered = 0;
3425 guint fully_covered = 0;
3427 name = mono_image_get_name (image);
3428 guid = mono_image_get_guid (image);
3429 filename = mono_image_get_filename (image);
3431 name = name ? name : "";
3432 guid = guid ? guid : "";
3433 filename = filename ? filename : "";
3435 get_coverage_for_image (image, &number_of_methods, &fully_covered, &partially_covered);
3437 ENTER_LOG (&coverage_assemblies_ctr, logbuffer,
3438 EVENT_SIZE /* event */ +
3439 strlen (name) + 1 /* name */ +
3440 strlen (guid) + 1 /* guid */ +
3441 strlen (filename) + 1 /* file name */ +
3442 LEB128_SIZE /* no. methods */ +
3443 LEB128_SIZE /* fully covered */ +
3444 LEB128_SIZE /* partially covered */
3447 emit_event (logbuffer, TYPE_COVERAGE_ASSEMBLY | TYPE_COVERAGE);
3448 emit_string (logbuffer, name, strlen (name) + 1);
3449 emit_string (logbuffer, guid, strlen (guid) + 1);
3450 emit_string (logbuffer, filename, strlen (filename) + 1);
3451 emit_uvalue (logbuffer, number_of_methods);
3452 emit_uvalue (logbuffer, fully_covered);
3453 emit_uvalue (logbuffer, partially_covered);
3455 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
3459 dump_coverage (MonoProfiler *prof)
3461 if (!coverage_initialized)
3464 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Started dump\n");)
3467 mono_os_mutex_lock (&coverage_mutex);
3468 mono_conc_hashtable_foreach (coverage_assemblies, build_assembly_buffer, NULL);
3469 mono_conc_hashtable_foreach (coverage_classes, build_class_buffer, NULL);
3470 mono_conc_hashtable_foreach (coverage_methods, build_method_buffer, prof);
3471 mono_os_mutex_unlock (&coverage_mutex);
3473 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Finished dump\n");)
3477 process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method)
3482 if (!coverage_initialized)
3485 klass = mono_method_get_class (method);
3486 image = mono_class_get_image (klass);
3488 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)))
3491 mono_os_mutex_lock (&coverage_mutex);
3492 mono_conc_hashtable_insert (entered_methods, method, method);
3493 mono_os_mutex_unlock (&coverage_mutex);
3496 static MonoLockFreeQueueNode *
3497 create_method_node (MonoMethod *method)
3499 MethodNode *node = (MethodNode *) g_malloc (sizeof (MethodNode));
3500 mono_lock_free_queue_node_init ((MonoLockFreeQueueNode *) node, FALSE);
3501 node->method = method;
3503 return (MonoLockFreeQueueNode *) node;
3507 coverage_filter (MonoProfiler *prof, MonoMethod *method)
3512 MonoAssembly *assembly;
3513 MonoMethodHeader *header;
3514 guint32 iflags, flags, code_size;
3515 char *fqn, *classname;
3516 gboolean has_positive, found;
3517 MonoLockFreeQueue *image_methods, *class_methods;
3518 MonoLockFreeQueueNode *node;
3520 g_assert (coverage_initialized && "Why are we being asked for coverage filter info when we're not doing coverage?");
3522 COVERAGE_DEBUG(fprintf (stderr, "Coverage filter for %s\n", mono_method_get_name (method));)
3524 flags = mono_method_get_flags (method, &iflags);
3525 if ((iflags & 0x1000 /*METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL*/) ||
3526 (flags & 0x2000 /*METHOD_ATTRIBUTE_PINVOKE_IMPL*/)) {
3527 COVERAGE_DEBUG(fprintf (stderr, " Internal call or pinvoke - ignoring\n");)
3531 // Don't need to do anything else if we're already tracking this method
3532 if (mono_conc_hashtable_lookup (coverage_methods, method)) {
3533 COVERAGE_DEBUG(fprintf (stderr, " Already tracking\n");)
3537 klass = mono_method_get_class (method);
3538 image = mono_class_get_image (klass);
3540 // Don't handle coverage for the core assemblies
3541 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)) != NULL)
3544 if (prof->coverage_filters) {
3545 /* Check already filtered classes first */
3546 if (mono_conc_hashtable_lookup (filtered_classes, klass)) {
3547 COVERAGE_DEBUG(fprintf (stderr, " Already filtered\n");)
3551 classname = mono_type_get_name (mono_class_get_type (klass));
3553 fqn = g_strdup_printf ("[%s]%s", mono_image_get_name (image), classname);
3555 COVERAGE_DEBUG(fprintf (stderr, " Looking for %s in filter\n", fqn);)
3556 // Check positive filters first
3557 has_positive = FALSE;
3559 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3560 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3562 if (filter [0] == '+') {
3563 filter = &filter [1];
3565 COVERAGE_DEBUG(fprintf (stderr, " Checking against +%s ...", filter);)
3567 if (strstr (fqn, filter) != NULL) {
3568 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3571 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3573 has_positive = TRUE;
3577 if (has_positive && !found) {
3578 COVERAGE_DEBUG(fprintf (stderr, " Positive match was not found\n");)
3580 mono_os_mutex_lock (&coverage_mutex);
3581 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3582 mono_os_mutex_unlock (&coverage_mutex);
3589 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3590 // FIXME: Is substring search sufficient?
3591 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3592 if (filter [0] == '+')
3596 filter = &filter [1];
3597 COVERAGE_DEBUG(fprintf (stderr, " Checking against -%s ...", filter);)
3599 if (strstr (fqn, filter) != NULL) {
3600 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3602 mono_os_mutex_lock (&coverage_mutex);
3603 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3604 mono_os_mutex_unlock (&coverage_mutex);
3610 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3618 COVERAGE_DEBUG(fprintf (stderr, " Handling coverage for %s\n", mono_method_get_name (method));)
3619 header = mono_method_get_header_checked (method, &error);
3620 mono_error_cleanup (&error);
3622 mono_method_header_get_code (header, &code_size, NULL);
3624 assembly = mono_image_get_assembly (image);
3626 // Need to keep the assemblies around for as long as they are kept in the hashtable
3627 // Nunit, for example, has a habit of unloading them before the coverage statistics are
3628 // generated causing a crash. See https://bugzilla.xamarin.com/show_bug.cgi?id=39325
3629 mono_assembly_addref (assembly);
3631 mono_os_mutex_lock (&coverage_mutex);
3632 mono_conc_hashtable_insert (coverage_methods, method, method);
3633 mono_conc_hashtable_insert (coverage_assemblies, assembly, assembly);
3634 mono_os_mutex_unlock (&coverage_mutex);
3636 image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3638 if (image_methods == NULL) {
3639 image_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3640 mono_lock_free_queue_init (image_methods);
3641 mono_os_mutex_lock (&coverage_mutex);
3642 mono_conc_hashtable_insert (image_to_methods, image, image_methods);
3643 mono_os_mutex_unlock (&coverage_mutex);
3646 node = create_method_node (method);
3647 mono_lock_free_queue_enqueue (image_methods, node);
3649 class_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (coverage_classes, klass);
3651 if (class_methods == NULL) {
3652 class_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3653 mono_lock_free_queue_init (class_methods);
3654 mono_os_mutex_lock (&coverage_mutex);
3655 mono_conc_hashtable_insert (coverage_classes, klass, class_methods);
3656 mono_os_mutex_unlock (&coverage_mutex);
3659 node = create_method_node (method);
3660 mono_lock_free_queue_enqueue (class_methods, node);
3665 #define LINE_BUFFER_SIZE 4096
3666 /* Max file limit of 128KB */
3667 #define MAX_FILE_SIZE 128 * 1024
3669 get_file_content (FILE *stream)
3674 int res, offset = 0;
3676 res = fseek (stream, 0, SEEK_END);
3680 filesize = ftell (stream);
3684 res = fseek (stream, 0, SEEK_SET);
3688 if (filesize > MAX_FILE_SIZE)
3691 buffer = (char *) g_malloc ((filesize + 1) * sizeof (char));
3692 while ((bytes_read = fread (buffer + offset, 1, LINE_BUFFER_SIZE, stream)) > 0)
3693 offset += bytes_read;
3695 /* NULL terminate our buffer */
3696 buffer[filesize] = '\0';
3701 get_next_line (char *contents, char **next_start)
3705 if (p == NULL || *p == '\0') {
3710 while (*p != '\n' && *p != '\0')
3715 *next_start = p + 1;
3723 init_suppressed_assemblies (void)
3729 suppressed_assemblies = mono_conc_hashtable_new (g_str_hash, g_str_equal);
3730 sa_file = fopen (SUPPRESSION_DIR "/mono-profiler-log.suppression", "r");
3731 if (sa_file == NULL)
3734 /* Don't need to free @content as it is referred to by the lines stored in @suppressed_assemblies */
3735 content = get_file_content (sa_file);
3736 if (content == NULL) {
3737 g_error ("mono-profiler-log.suppression is greater than 128kb - aborting\n");
3740 while ((line = get_next_line (content, &content))) {
3741 line = g_strchomp (g_strchug (line));
3742 /* No locking needed as we're doing initialization */
3743 mono_conc_hashtable_insert (suppressed_assemblies, line, line);
3750 parse_cov_filter_file (GPtrArray *filters, const char *file)
3753 char *line, *content;
3755 if (filters == NULL)
3756 filters = g_ptr_array_new ();
3758 filter_file = fopen (file, "r");
3759 if (filter_file == NULL) {
3760 fprintf (stderr, "Unable to open %s\n", file);
3764 /* Don't need to free content as it is referred to by the lines stored in @filters */
3765 content = get_file_content (filter_file);
3766 if (content == NULL)
3767 fprintf (stderr, "WARNING: %s is greater than 128kb - ignoring\n", file);
3769 while ((line = get_next_line (content, &content)))
3770 g_ptr_array_add (filters, g_strchug (g_strchomp (line)));
3772 fclose (filter_file);
3776 coverage_init (MonoProfiler *prof)
3778 g_assert (!coverage_initialized && "Why are we initializing coverage twice?");
3780 COVERAGE_DEBUG(fprintf (stderr, "Coverage initialized\n");)
3782 mono_os_mutex_init (&coverage_mutex);
3783 coverage_methods = mono_conc_hashtable_new (NULL, NULL);
3784 coverage_assemblies = mono_conc_hashtable_new (NULL, NULL);
3785 coverage_classes = mono_conc_hashtable_new (NULL, NULL);
3786 filtered_classes = mono_conc_hashtable_new (NULL, NULL);
3787 entered_methods = mono_conc_hashtable_new (NULL, NULL);
3788 image_to_methods = mono_conc_hashtable_new (NULL, NULL);
3789 init_suppressed_assemblies ();
3791 coverage_initialized = TRUE;
3795 unref_coverage_assemblies (gpointer key, gpointer value, gpointer userdata)
3797 MonoAssembly *assembly = (MonoAssembly *)value;
3798 mono_assembly_close (assembly);
3802 free_sample_hit (gpointer p)
3804 mono_lock_free_free (p, SAMPLE_BLOCK_SIZE);
3808 cleanup_reusable_samples (MonoProfiler *prof)
3812 while ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->sample_reuse_queue)))
3813 mono_thread_hazardous_try_free (sample, free_sample_hit);
3817 log_shutdown (MonoProfiler *prof)
3819 InterlockedWrite (&in_shutdown, 1);
3822 counters_and_perfcounters_sample (prof);
3824 dump_coverage (prof);
3828 if (write (prof->pipes [1], &c, 1) != 1) {
3829 fprintf (stderr, "Could not write to pipe: %s\n", strerror (errno));
3833 mono_native_thread_join (prof->helper_thread);
3835 mono_os_mutex_destroy (&counters_mutex);
3837 MonoCounterAgent *mc_next;
3839 for (MonoCounterAgent *cur = counters; cur; cur = mc_next) {
3840 mc_next = cur->next;
3844 PerfCounterAgent *pc_next;
3846 for (PerfCounterAgent *cur = perfcounters; cur; cur = pc_next) {
3847 pc_next = cur->next;
3852 * Ensure that we empty the LLS completely, even if some nodes are
3853 * not immediately removed upon calling mono_lls_remove (), by
3854 * iterating until the head is NULL.
3856 while (profiler_thread_list.head) {
3857 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
3858 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
3860 remove_thread (thread);
3861 } MONO_LLS_FOREACH_SAFE_END
3865 * Ensure that all threads have been freed, so that we don't miss any
3866 * buffers when we shut down the writer thread below.
3868 mono_thread_hazardous_try_free_all ();
3870 InterlockedWrite (&prof->run_dumper_thread, 0);
3871 mono_os_sem_post (&prof->dumper_queue_sem);
3872 mono_native_thread_join (prof->dumper_thread);
3873 mono_os_sem_destroy (&prof->dumper_queue_sem);
3875 InterlockedWrite (&prof->run_writer_thread, 0);
3876 mono_os_sem_post (&prof->writer_queue_sem);
3877 mono_native_thread_join (prof->writer_thread);
3878 mono_os_sem_destroy (&prof->writer_queue_sem);
3881 * Free all writer queue entries, and ensure that all sample hits will be
3882 * added to the sample reuse queue.
3884 mono_thread_hazardous_try_free_all ();
3886 cleanup_reusable_samples (prof);
3889 * Finally, make sure that all sample hits are freed. This should cover all
3890 * hazardous data from the profiler. We can now be sure that the runtime
3891 * won't later invoke free functions in the profiler library after it has
3894 mono_thread_hazardous_try_free_all ();
3896 g_assert (!InterlockedRead (&buffer_rwlock_count) && "Why is the reader count still non-zero?");
3897 g_assert (!InterlockedReadPointer (&buffer_rwlock_exclusive) && "Why does someone still hold the exclusive lock?");
3899 #if defined (HAVE_SYS_ZLIB)
3901 gzclose (prof->gzfile);
3903 if (prof->pipe_output)
3904 pclose (prof->file);
3906 fclose (prof->file);
3908 mono_conc_hashtable_destroy (prof->method_table);
3909 mono_os_mutex_destroy (&prof->method_table_mutex);
3911 if (coverage_initialized) {
3912 mono_os_mutex_lock (&coverage_mutex);
3913 mono_conc_hashtable_foreach (coverage_assemblies, unref_coverage_assemblies, prof);
3914 mono_os_mutex_unlock (&coverage_mutex);
3916 mono_conc_hashtable_destroy (coverage_methods);
3917 mono_conc_hashtable_destroy (coverage_assemblies);
3918 mono_conc_hashtable_destroy (coverage_classes);
3919 mono_conc_hashtable_destroy (filtered_classes);
3921 mono_conc_hashtable_destroy (entered_methods);
3922 mono_conc_hashtable_destroy (image_to_methods);
3923 mono_conc_hashtable_destroy (suppressed_assemblies);
3924 mono_os_mutex_destroy (&coverage_mutex);
3929 g_free (prof->args);
3934 new_filename (const char* filename)
3936 time_t t = time (NULL);
3937 int pid = process_id ();
3942 int count_dates = 0;
3946 for (p = filename; *p; p++) {
3957 if (!count_dates && !count_pids)
3958 return pstrdup (filename);
3959 snprintf (pid_buf, sizeof (pid_buf), "%d", pid);
3961 snprintf (time_buf, sizeof (time_buf), "%d%02d%02d%02d%02d%02d",
3962 1900 + ts->tm_year, 1 + ts->tm_mon, ts->tm_mday, ts->tm_hour, ts->tm_min, ts->tm_sec);
3963 s_date = strlen (time_buf);
3964 s_pid = strlen (pid_buf);
3965 d = res = (char *) g_malloc (strlen (filename) + s_date * count_dates + s_pid * count_pids);
3966 for (p = filename; *p; p++) {
3973 strcpy (d, time_buf);
3976 } else if (*p == 'p') {
3977 strcpy (d, pid_buf);
3980 } else if (*p == '%') {
3993 add_to_fd_set (fd_set *set, int fd, int *max_fd)
3996 * This should only trigger for the basic FDs (server socket, pipes) at
3997 * startup if for some mysterious reason they're too large. In this case,
3998 * the profiler really can't function, and we're better off printing an
3999 * error and exiting.
4001 if (fd >= FD_SETSIZE) {
4002 fprintf (stderr, "File descriptor is out of bounds for fd_set: %d\n", fd);
4013 helper_thread (void *arg)
4015 MonoProfiler *prof = (MonoProfiler *) arg;
4017 mono_threads_attach_tools_thread ();
4018 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler helper");
4020 MonoProfilerThread *thread = init_thread (prof, FALSE);
4022 GArray *command_sockets = g_array_new (FALSE, FALSE, sizeof (int));
4030 add_to_fd_set (&rfds, prof->server_socket, &max_fd);
4031 add_to_fd_set (&rfds, prof->pipes [0], &max_fd);
4033 for (gint i = 0; i < command_sockets->len; i++)
4034 add_to_fd_set (&rfds, g_array_index (command_sockets, int, i), &max_fd);
4036 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
4038 // Sleep for 1sec or until a file descriptor has data.
4039 if (select (max_fd + 1, &rfds, NULL, NULL, &tv) == -1) {
4043 fprintf (stderr, "Error in mono-profiler-log server: %s", strerror (errno));
4048 counters_and_perfcounters_sample (prof);
4050 buffer_lock_excl ();
4052 sync_point (SYNC_POINT_PERIODIC);
4054 buffer_unlock_excl ();
4056 // Are we shutting down?
4057 if (FD_ISSET (prof->pipes [0], &rfds)) {
4059 read (prof->pipes [0], &c, 1);
4063 for (gint i = 0; i < command_sockets->len; i++) {
4064 int fd = g_array_index (command_sockets, int, i);
4066 if (!FD_ISSET (fd, &rfds))
4070 int len = read (fd, buf, sizeof (buf) - 1);
4076 // The other end disconnected.
4077 g_array_remove_index (command_sockets, i);
4085 if (!strcmp (buf, "heapshot\n") && hs_mode_ondemand) {
4086 // Rely on the finalization callbacks invoking process_requests ().
4087 heapshot_requested = 1;
4088 mono_gc_finalize_notify ();
4092 if (FD_ISSET (prof->server_socket, &rfds)) {
4093 int fd = accept (prof->server_socket, NULL, NULL);
4096 if (fd >= FD_SETSIZE)
4099 g_array_append_val (command_sockets, fd);
4104 for (gint i = 0; i < command_sockets->len; i++)
4105 close (g_array_index (command_sockets, int, i));
4107 g_array_free (command_sockets, TRUE);
4109 send_log_unsafe (FALSE);
4110 deinit_thread (thread);
4112 mono_thread_info_detach ();
4118 start_helper_thread (MonoProfiler* prof)
4120 if (pipe (prof->pipes) == -1) {
4121 fprintf (stderr, "Cannot create pipe: %s\n", strerror (errno));
4125 prof->server_socket = socket (PF_INET, SOCK_STREAM, 0);
4127 if (prof->server_socket == -1) {
4128 fprintf (stderr, "Cannot create server socket: %s\n", strerror (errno));
4132 struct sockaddr_in server_address;
4134 memset (&server_address, 0, sizeof (server_address));
4135 server_address.sin_family = AF_INET;
4136 server_address.sin_addr.s_addr = INADDR_ANY;
4137 server_address.sin_port = htons (prof->command_port);
4139 if (bind (prof->server_socket, (struct sockaddr *) &server_address, sizeof (server_address)) == -1) {
4140 fprintf (stderr, "Cannot bind server socket on port %d: %s\n", prof->command_port, strerror (errno));
4141 close (prof->server_socket);
4145 if (listen (prof->server_socket, 1) == -1) {
4146 fprintf (stderr, "Cannot listen on server socket: %s\n", strerror (errno));
4147 close (prof->server_socket);
4151 socklen_t slen = sizeof (server_address);
4153 if (getsockname (prof->server_socket, (struct sockaddr *) &server_address, &slen)) {
4154 fprintf (stderr, "Could not get assigned port: %s\n", strerror (errno));
4155 close (prof->server_socket);
4159 prof->command_port = ntohs (server_address.sin_port);
4161 if (!mono_native_thread_create (&prof->helper_thread, helper_thread, prof)) {
4162 fprintf (stderr, "Could not start helper thread\n");
4163 close (prof->server_socket);
4169 free_writer_entry (gpointer p)
4171 mono_lock_free_free (p, WRITER_ENTRY_BLOCK_SIZE);
4175 handle_writer_queue_entry (MonoProfiler *prof)
4177 WriterQueueEntry *entry;
4179 if ((entry = (WriterQueueEntry *) mono_lock_free_queue_dequeue (&prof->writer_queue))) {
4180 if (!entry->methods)
4183 gboolean wrote_methods = FALSE;
4186 * Encode the method events in a temporary log buffer that we
4187 * flush to disk before the main buffer, ensuring that all
4188 * methods have metadata emitted before they're referenced.
4190 * We use a 'proper' thread-local buffer for this as opposed
4191 * to allocating and freeing a buffer by hand because the call
4192 * to mono_method_full_name () below may trigger class load
4193 * events when it retrieves the signature of the method. So a
4194 * thread-local buffer needs to exist when such events occur.
4196 for (guint i = 0; i < entry->methods->len; i++) {
4197 MethodInfo *info = (MethodInfo *) g_ptr_array_index (entry->methods, i);
4199 if (mono_conc_hashtable_lookup (prof->method_table, info->method))
4200 goto free_info; // This method already has metadata emitted.
4203 * Other threads use this hash table to get a general
4204 * idea of whether a method has already been emitted to
4205 * the stream. Due to the way we add to this table, it
4206 * can easily happen that multiple threads queue up the
4207 * same methods, but that's OK since eventually all
4208 * methods will be in this table and the thread-local
4209 * method lists will just be empty for the rest of the
4212 mono_os_mutex_lock (&prof->method_table_mutex);
4213 mono_conc_hashtable_insert (prof->method_table, info->method, info->method);
4214 mono_os_mutex_unlock (&prof->method_table_mutex);
4216 char *name = mono_method_full_name (info->method, 1);
4217 int nlen = strlen (name) + 1;
4218 void *cstart = info->ji ? mono_jit_info_get_code_start (info->ji) : NULL;
4219 int csize = info->ji ? mono_jit_info_get_code_size (info->ji) : 0;
4221 ENTER_LOG (&method_jits_ctr, logbuffer,
4222 EVENT_SIZE /* event */ +
4223 LEB128_SIZE /* method */ +
4224 LEB128_SIZE /* start */ +
4225 LEB128_SIZE /* size */ +
4229 emit_event_time (logbuffer, TYPE_JIT | TYPE_METHOD, info->time);
4230 emit_method_inner (logbuffer, info->method);
4231 emit_ptr (logbuffer, cstart);
4232 emit_value (logbuffer, csize);
4234 memcpy (logbuffer->cursor, name, nlen);
4235 logbuffer->cursor += nlen;
4237 EXIT_LOG_EXPLICIT (NO_SEND, NO_REQUESTS);
4241 wrote_methods = TRUE;
4247 g_ptr_array_free (entry->methods, TRUE);
4249 if (wrote_methods) {
4250 dump_buffer_threadless (prof, PROF_TLS_GET ()->buffer);
4251 init_buffer_state (PROF_TLS_GET ());
4255 dump_buffer (prof, entry->buffer);
4257 mono_thread_hazardous_try_free (entry, free_writer_entry);
4266 writer_thread (void *arg)
4268 MonoProfiler *prof = (MonoProfiler *)arg;
4270 mono_threads_attach_tools_thread ();
4271 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler writer");
4275 MonoProfilerThread *thread = init_thread (prof, FALSE);
4277 while (InterlockedRead (&prof->run_writer_thread)) {
4278 mono_os_sem_wait (&prof->writer_queue_sem, MONO_SEM_FLAGS_NONE);
4279 handle_writer_queue_entry (prof);
4282 /* Drain any remaining entries on shutdown. */
4283 while (handle_writer_queue_entry (prof));
4285 free_buffer (thread->buffer, thread->buffer->size);
4286 deinit_thread (thread);
4288 mono_thread_info_detach ();
4294 start_writer_thread (MonoProfiler* prof)
4296 InterlockedWrite (&prof->run_writer_thread, 1);
4298 if (!mono_native_thread_create (&prof->writer_thread, writer_thread, prof)) {
4299 fprintf (stderr, "Could not start writer thread\n");
4305 reuse_sample_hit (gpointer p)
4307 SampleHit *sample = p;
4309 mono_lock_free_queue_node_unpoison (&sample->node);
4310 mono_lock_free_queue_enqueue (&sample->prof->sample_reuse_queue, &sample->node);
4314 handle_dumper_queue_entry (MonoProfiler *prof)
4318 if ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->dumper_queue))) {
4319 for (int i = 0; i < sample->count; ++i) {
4320 MonoMethod *method = sample->frames [i].method;
4321 MonoDomain *domain = sample->frames [i].domain;
4322 void *address = sample->frames [i].base_address;
4325 g_assert (domain && "What happened to the domain pointer?");
4326 g_assert (address && "What happened to the instruction pointer?");
4328 MonoJitInfo *ji = mono_jit_info_table_find (domain, (char *) address);
4331 sample->frames [i].method = mono_jit_info_get_method (ji);
4335 ENTER_LOG (&sample_hits_ctr, logbuffer,
4336 EVENT_SIZE /* event */ +
4337 BYTE_SIZE /* type */ +
4338 LEB128_SIZE /* tid */ +
4339 LEB128_SIZE /* count */ +
4341 LEB128_SIZE /* ip */
4343 LEB128_SIZE /* managed count */ +
4345 LEB128_SIZE /* method */
4349 emit_event_time (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_HIT, sample->time);
4350 emit_byte (logbuffer, SAMPLE_CYCLES);
4351 emit_ptr (logbuffer, (void *) sample->tid);
4352 emit_value (logbuffer, 1);
4354 // TODO: Actual native unwinding.
4355 for (int i = 0; i < 1; ++i) {
4356 emit_ptr (logbuffer, sample->ip);
4357 add_code_pointer ((uintptr_t) sample->ip);
4360 /* new in data version 6 */
4361 emit_uvalue (logbuffer, sample->count);
4363 for (int i = 0; i < sample->count; ++i)
4364 emit_method (logbuffer, sample->frames [i].method);
4366 EXIT_LOG_EXPLICIT (DO_SEND, NO_REQUESTS);
4368 mono_thread_hazardous_try_free (sample, reuse_sample_hit);
4370 dump_unmanaged_coderefs (prof);
4377 dumper_thread (void *arg)
4379 MonoProfiler *prof = (MonoProfiler *)arg;
4381 mono_threads_attach_tools_thread ();
4382 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler dumper");
4384 MonoProfilerThread *thread = init_thread (prof, FALSE);
4386 while (InterlockedRead (&prof->run_dumper_thread)) {
4387 mono_os_sem_wait (&prof->dumper_queue_sem, MONO_SEM_FLAGS_NONE);
4388 handle_dumper_queue_entry (prof);
4391 /* Drain any remaining entries on shutdown. */
4392 while (handle_dumper_queue_entry (prof));
4394 send_log_unsafe (FALSE);
4395 deinit_thread (thread);
4397 mono_thread_info_detach ();
4403 start_dumper_thread (MonoProfiler* prof)
4405 InterlockedWrite (&prof->run_dumper_thread, 1);
4407 if (!mono_native_thread_create (&prof->dumper_thread, dumper_thread, prof)) {
4408 fprintf (stderr, "Could not start dumper thread\n");
4414 register_counter (const char *name, gint32 *counter)
4416 mono_counters_register (name, MONO_COUNTER_UINT | MONO_COUNTER_PROFILER | MONO_COUNTER_MONOTONIC, counter);
4420 runtime_initialized (MonoProfiler *profiler)
4422 InterlockedWrite (&runtime_inited, 1);
4424 register_counter ("Sample events allocated", &sample_allocations_ctr);
4425 register_counter ("Log buffers allocated", &buffer_allocations_ctr);
4427 register_counter ("Event: Sync points", &sync_points_ctr);
4428 register_counter ("Event: Heap objects", &heap_objects_ctr);
4429 register_counter ("Event: Heap starts", &heap_starts_ctr);
4430 register_counter ("Event: Heap ends", &heap_ends_ctr);
4431 register_counter ("Event: Heap roots", &heap_roots_ctr);
4432 register_counter ("Event: GC events", &gc_events_ctr);
4433 register_counter ("Event: GC resizes", &gc_resizes_ctr);
4434 register_counter ("Event: GC allocations", &gc_allocs_ctr);
4435 register_counter ("Event: GC moves", &gc_moves_ctr);
4436 register_counter ("Event: GC handle creations", &gc_handle_creations_ctr);
4437 register_counter ("Event: GC handle deletions", &gc_handle_deletions_ctr);
4438 register_counter ("Event: GC finalize starts", &finalize_begins_ctr);
4439 register_counter ("Event: GC finalize ends", &finalize_ends_ctr);
4440 register_counter ("Event: GC finalize object starts", &finalize_object_begins_ctr);
4441 register_counter ("Event: GC finalize object ends", &finalize_object_ends_ctr);
4442 register_counter ("Event: Image loads", &image_loads_ctr);
4443 register_counter ("Event: Image unloads", &image_unloads_ctr);
4444 register_counter ("Event: Assembly loads", &assembly_loads_ctr);
4445 register_counter ("Event: Assembly unloads", &assembly_unloads_ctr);
4446 register_counter ("Event: Class loads", &class_loads_ctr);
4447 register_counter ("Event: Class unloads", &class_unloads_ctr);
4448 register_counter ("Event: Method entries", &method_entries_ctr);
4449 register_counter ("Event: Method exits", &method_exits_ctr);
4450 register_counter ("Event: Method exception leaves", &method_exception_exits_ctr);
4451 register_counter ("Event: Method JITs", &method_jits_ctr);
4452 register_counter ("Event: Code buffers", &code_buffers_ctr);
4453 register_counter ("Event: Exception throws", &exception_throws_ctr);
4454 register_counter ("Event: Exception clauses", &exception_clauses_ctr);
4455 register_counter ("Event: Monitor contentions", &monitor_contentions_ctr);
4456 register_counter ("Event: Monitor acquisitions", &monitor_acquisitions_ctr);
4457 register_counter ("Event: Monitor failures", &monitor_failures_ctr);
4458 register_counter ("Event: Thread starts", &thread_starts_ctr);
4459 register_counter ("Event: Thread ends", &thread_ends_ctr);
4460 register_counter ("Event: Thread names", &thread_names_ctr);
4461 register_counter ("Event: Domain loads", &domain_loads_ctr);
4462 register_counter ("Event: Domain unloads", &domain_unloads_ctr);
4463 register_counter ("Event: Domain names", &domain_names_ctr);
4464 register_counter ("Event: Context loads", &context_loads_ctr);
4465 register_counter ("Event: Context unloads", &context_unloads_ctr);
4466 register_counter ("Event: Sample binaries", &sample_ubins_ctr);
4467 register_counter ("Event: Sample symbols", &sample_usyms_ctr);
4468 register_counter ("Event: Sample hits", &sample_hits_ctr);
4469 register_counter ("Event: Counter descriptors", &counter_descriptors_ctr);
4470 register_counter ("Event: Counter samples", &counter_samples_ctr);
4471 register_counter ("Event: Performance counter descriptors", &perfcounter_descriptors_ctr);
4472 register_counter ("Event: Performance counter samples", &perfcounter_samples_ctr);
4473 register_counter ("Event: Coverage methods", &coverage_methods_ctr);
4474 register_counter ("Event: Coverage statements", &coverage_statements_ctr);
4475 register_counter ("Event: Coverage classes", &coverage_classes_ctr);
4476 register_counter ("Event: Coverage assemblies", &coverage_assemblies_ctr);
4478 counters_init (profiler);
4481 * We must start the helper thread before the writer thread. This is
4482 * because the helper thread sets up the command port which is written to
4483 * the log header by the writer thread.
4485 start_helper_thread (profiler);
4486 start_writer_thread (profiler);
4487 start_dumper_thread (profiler);
4490 static MonoProfiler*
4491 create_profiler (const char *args, const char *filename, GPtrArray *filters)
4495 int force_delete = 0;
4496 prof = (MonoProfiler *) g_calloc (1, sizeof (MonoProfiler));
4498 prof->args = pstrdup (args);
4499 prof->command_port = command_port;
4500 if (filename && *filename == '-') {
4506 filename = "|mprof-report -";
4508 filename = "output.mlpd";
4509 nf = (char*)filename;
4511 nf = new_filename (filename);
4513 int s = strlen (nf) + 32;
4514 char *p = (char *) g_malloc (s);
4515 snprintf (p, s, "|mprof-report '--out=%s' -", nf);
4521 prof->file = popen (nf + 1, "w");
4522 prof->pipe_output = 1;
4523 } else if (*nf == '#') {
4524 int fd = strtol (nf + 1, NULL, 10);
4525 prof->file = fdopen (fd, "a");
4529 prof->file = fopen (nf, "wb");
4532 fprintf (stderr, "Cannot create profiler output: %s\n", nf);
4536 #if defined (HAVE_SYS_ZLIB)
4538 prof->gzfile = gzdopen (fileno (prof->file), "wb");
4542 * If you hit this assert while increasing MAX_FRAMES, you need to increase
4543 * SAMPLE_BLOCK_SIZE as well.
4545 g_assert (SAMPLE_SLOT_SIZE (MAX_FRAMES) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (SAMPLE_BLOCK_SIZE));
4547 // FIXME: We should free this stuff too.
4548 mono_lock_free_allocator_init_size_class (&prof->sample_size_class, SAMPLE_SLOT_SIZE (num_frames), SAMPLE_BLOCK_SIZE);
4549 mono_lock_free_allocator_init_allocator (&prof->sample_allocator, &prof->sample_size_class, MONO_MEM_ACCOUNT_PROFILER);
4551 mono_lock_free_queue_init (&prof->sample_reuse_queue);
4553 g_assert (sizeof (WriterQueueEntry) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (WRITER_ENTRY_BLOCK_SIZE));
4555 // FIXME: We should free this stuff too.
4556 mono_lock_free_allocator_init_size_class (&prof->writer_entry_size_class, sizeof (WriterQueueEntry), WRITER_ENTRY_BLOCK_SIZE);
4557 mono_lock_free_allocator_init_allocator (&prof->writer_entry_allocator, &prof->writer_entry_size_class, MONO_MEM_ACCOUNT_PROFILER);
4559 mono_lock_free_queue_init (&prof->writer_queue);
4560 mono_os_sem_init (&prof->writer_queue_sem, 0);
4562 mono_lock_free_queue_init (&prof->dumper_queue);
4563 mono_os_sem_init (&prof->dumper_queue_sem, 0);
4565 mono_os_mutex_init (&prof->method_table_mutex);
4566 prof->method_table = mono_conc_hashtable_new (NULL, NULL);
4569 coverage_init (prof);
4570 prof->coverage_filters = filters;
4572 prof->startup_time = current_time ();
4577 * declaration to silence the compiler: this is the entry point that
4578 * mono will load from the shared library and call.
4581 mono_profiler_startup (const char *desc);
4584 mono_profiler_startup_log (const char *desc);
4587 * this is the entry point that will be used when the profiler
4588 * is embedded inside the main executable.
4591 mono_profiler_startup_log (const char *desc)
4593 mono_profiler_startup (desc);
4596 static ProfilerConfig config;
4599 mono_profiler_startup (const char *desc)
4601 GPtrArray *filters = NULL;
4604 if (desc [3] == ':')
4605 proflog_parse_args (&config, desc + 4);
4607 proflog_parse_args (&config, "");
4608 //XXX maybe later cleanup to use config directly
4609 nocalls = !(config.effective_mask & EnterLeaveEvents);
4610 no_counters = !(config.effective_mask & CounterEvents);
4611 do_report = config.do_report;
4612 do_debug = config.do_debug;
4613 do_heap_shot = (config.effective_mask & HeapShotFeature);
4614 hs_mode_ondemand = config.hs_mode_ondemand;
4615 hs_mode_ms = config.hs_mode_ms;
4616 hs_mode_gc = config.hs_mode_gc;
4617 do_mono_sample = (config.effective_mask & SamplingFeature);
4618 use_zip = config.use_zip;
4619 command_port = config.command_port;
4620 num_frames = config.num_frames;
4621 notraces = config.notraces;
4622 max_allocated_sample_hits = config.max_allocated_sample_hits;
4623 max_call_depth = config.max_call_depth;
4624 do_coverage = (config.effective_mask & CodeCoverageFeature);
4625 debug_coverage = config.debug_coverage;
4626 only_coverage = config.only_coverage;
4628 if (config.cov_filter_files) {
4629 filters = g_ptr_array_new ();
4631 for (i = 0; i < config.cov_filter_files->len; ++i) {
4632 const char *name = config.cov_filter_files->pdata [i];
4633 parse_cov_filter_file (filters, name);
4641 prof = create_profiler (desc, config.output_filename, filters);
4647 mono_lls_init (&profiler_thread_list, NULL);
4649 init_thread (prof, TRUE);
4651 //This two events are required for the profiler to work
4652 int events = MONO_PROFILE_THREADS | MONO_PROFILE_GC;
4654 //Required callbacks
4655 mono_profiler_install (prof, log_shutdown);
4656 mono_profiler_install_runtime_initialized (runtime_initialized);
4658 mono_profiler_install_gc (gc_event, gc_resize);
4659 mono_profiler_install_thread (thread_start, thread_end);
4661 //It's questionable whether we actually want this to be mandatory, maybe put it behind the actual event?
4662 mono_profiler_install_thread_name (thread_name);
4665 if (config.effective_mask & DomainEvents) {
4666 events |= MONO_PROFILE_APPDOMAIN_EVENTS;
4667 mono_profiler_install_appdomain (NULL, domain_loaded, domain_unloaded, NULL);
4668 mono_profiler_install_appdomain_name (domain_name);
4671 if (config.effective_mask & AssemblyEvents) {
4672 events |= MONO_PROFILE_ASSEMBLY_EVENTS;
4673 mono_profiler_install_assembly (NULL, assembly_loaded, assembly_unloaded, NULL);
4676 if (config.effective_mask & ModuleEvents) {
4677 events |= MONO_PROFILE_MODULE_EVENTS;
4678 mono_profiler_install_module (NULL, image_loaded, image_unloaded, NULL);
4681 if (config.effective_mask & ClassEvents) {
4682 events |= MONO_PROFILE_CLASS_EVENTS;
4683 mono_profiler_install_class (NULL, class_loaded, class_unloaded, NULL);
4686 if (config.effective_mask & JitCompilationEvents) {
4687 events |= MONO_PROFILE_JIT_COMPILATION;
4688 mono_profiler_install_jit_end (method_jitted);
4689 mono_profiler_install_code_buffer_new (code_buffer_new);
4692 if (config.effective_mask & ExceptionEvents) {
4693 events |= MONO_PROFILE_EXCEPTIONS;
4694 mono_profiler_install_exception (throw_exc, method_exc_leave, clause_exc);
4697 if (config.effective_mask & AllocationEvents) {
4698 events |= MONO_PROFILE_ALLOCATIONS;
4699 mono_profiler_install_allocation (gc_alloc);
4702 //GCEvents is mandatory
4703 //ThreadEvents is mandatory
4705 if (config.effective_mask & EnterLeaveEvents) {
4706 events |= MONO_PROFILE_ENTER_LEAVE;
4707 mono_profiler_install_enter_leave (method_enter, method_leave);
4710 if (config.effective_mask & InsCoverageEvents) {
4711 events |= MONO_PROFILE_INS_COVERAGE;
4712 mono_profiler_install_coverage_filter (coverage_filter);
4715 //XXX should we check for SamplingFeature instead??
4716 if (config.effective_mask & SamplingEvents) {
4717 events |= MONO_PROFILE_STATISTICAL;
4718 mono_profiler_set_statistical_mode (config.sampling_mode, config.sample_freq);
4719 mono_profiler_install_statistical (mono_sample_hit);
4722 if (config.effective_mask & MonitorEvents) {
4723 events |= MONO_PROFILE_MONITOR_EVENTS;
4724 mono_profiler_install_monitor (monitor_event);
4727 if (config.effective_mask & GCMoveEvents) {
4728 events |= MONO_PROFILE_GC_MOVES;
4729 mono_profiler_install_gc_moves (gc_moves);
4732 if (config.effective_mask & (GCRootEvents | GCHandleEvents)) {
4733 events |= MONO_PROFILE_GC_ROOTS;
4734 mono_profiler_install_gc_roots (
4735 config.effective_mask & (GCHandleEvents) ? gc_handle : NULL,
4736 (config.effective_mask & GCRootEvents) ? gc_roots : NULL);
4739 if (config.effective_mask & ContextEvents) {
4740 events |= MONO_PROFILE_CONTEXT_EVENTS;
4741 mono_profiler_install_context (context_loaded, context_unloaded);
4744 if (config.effective_mask & FinalizationEvents) {
4745 events |= MONO_PROFILE_GC_FINALIZATION;
4746 mono_profiler_install_gc_finalize (finalize_begin, finalize_object_begin, finalize_object_end, finalize_end);
4749 //CounterEvents is a pseudo event controled by the no_counters global var
4750 //GCHandleEvents is handled together with GCRootEvents
4752 mono_profiler_set_events ((MonoProfileFlags)events);