2 * mono-profiler-log.c: mono log profiler
5 * Paolo Molaro (lupus@ximian.com)
6 * Alex Rønne Petersen (alexrp@xamarin.com)
8 * Copyright 2010 Novell, Inc (http://www.novell.com)
9 * Copyright 2011 Xamarin Inc (http://www.xamarin.com)
10 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
14 #include <mono/metadata/assembly.h>
15 #include <mono/metadata/debug-helpers.h>
16 #include "../metadata/metadata-internals.h"
17 #include <mono/metadata/mono-config.h>
18 #include <mono/metadata/mono-gc.h>
19 #include <mono/metadata/mono-perfcounters.h>
20 #include <mono/utils/atomic.h>
21 #include <mono/utils/hazard-pointer.h>
22 #include <mono/utils/lock-free-alloc.h>
23 #include <mono/utils/lock-free-queue.h>
24 #include <mono/utils/mono-conc-hashtable.h>
25 #include <mono/utils/mono-counters.h>
26 #include <mono/utils/mono-linked-list-set.h>
27 #include <mono/utils/mono-membar.h>
28 #include <mono/utils/mono-mmap.h>
29 #include <mono/utils/mono-os-mutex.h>
30 #include <mono/utils/mono-os-semaphore.h>
31 #include <mono/utils/mono-threads.h>
32 #include <mono/utils/mono-threads-api.h>
45 #if defined(__APPLE__)
46 #include <mach/mach_time.h>
48 #include <netinet/in.h>
49 #ifdef HAVE_SYS_MMAN_H
52 #include <sys/socket.h>
53 #if defined (HAVE_SYS_ZLIB)
57 #define BUFFER_SIZE (4096 * 16)
59 /* Worst-case size in bytes of a 64-bit value encoded with LEB128. */
60 #define LEB128_SIZE 10
62 /* Size of a value encoded as a single byte. */
63 #undef BYTE_SIZE // mach/i386/vm_param.h on OS X defines this to 8, but it isn't used for anything.
66 /* Size in bytes of the event prefix (ID + time). */
67 #define EVENT_SIZE (BYTE_SIZE + LEB128_SIZE)
69 static volatile gint32 runtime_inited;
70 static volatile gint32 in_shutdown;
72 static ProfilerConfig config;
73 static int nocalls = 0;
74 static int notraces = 0;
75 static int use_zip = 0;
76 static int do_report = 0;
77 static int do_heap_shot = 0;
78 static int max_call_depth = 0;
79 static int command_port = 0;
80 static int heapshot_requested = 0;
81 static int do_mono_sample = 0;
82 static int do_debug = 0;
83 static int do_coverage = 0;
84 static gboolean no_counters = FALSE;
85 static gboolean only_coverage = FALSE;
86 static gboolean debug_coverage = FALSE;
87 static int max_allocated_sample_hits;
89 #define ENABLED(EVT) (config.effective_mask & (EVT))
91 // Statistics for internal profiler data structures.
92 static gint32 sample_allocations_ctr,
93 buffer_allocations_ctr;
95 // Statistics for profiler events.
96 static gint32 sync_points_ctr,
105 gc_handle_creations_ctr,
106 gc_handle_deletions_ctr,
109 finalize_object_begins_ctr,
110 finalize_object_ends_ctr,
114 assembly_unloads_ctr,
119 method_exception_exits_ctr,
122 exception_throws_ctr,
123 exception_clauses_ctr,
136 counter_descriptors_ctr,
138 perfcounter_descriptors_ctr,
139 perfcounter_samples_ctr,
140 coverage_methods_ctr,
141 coverage_statements_ctr,
142 coverage_classes_ctr,
143 coverage_assemblies_ctr;
145 static MonoLinkedListSet profiler_thread_list;
151 * The file is composed by a header followed by 0 or more buffers.
152 * Each buffer contains events that happened on a thread: for a given thread
153 * buffers that appear later in the file are guaranteed to contain events
154 * that happened later in time. Buffers from separate threads could be interleaved,
156 * Buffers are not required to be aligned.
159 * [id: 4 bytes] constant value: LOG_HEADER_ID
160 * [major: 1 byte] [minor: 1 byte] major and minor version of the log profiler
161 * [format: 1 byte] version of the data format for the rest of the file
162 * [ptrsize: 1 byte] size in bytes of a pointer in the profiled program
163 * [startup time: 8 bytes] time in milliseconds since the unix epoch when the program started
164 * [timer overhead: 4 bytes] approximate overhead in nanoseconds of the timer
165 * [flags: 4 bytes] file format flags, should be 0 for now
166 * [pid: 4 bytes] pid of the profiled process
167 * [port: 2 bytes] tcp port for server if != 0
168 * [args size: 4 bytes] size of args
169 * [args: string] arguments passed to the profiler
170 * [arch size: 4 bytes] size of arch
171 * [arch: string] architecture the profiler is running on
172 * [os size: 4 bytes] size of os
173 * [os: string] operating system the profiler is running on
175 * The multiple byte integers are in little-endian format.
178 * [buffer header] [event]*
179 * Buffers have a fixed-size header followed by 0 or more bytes of event data.
180 * Timing information and other values in the event data are usually stored
181 * as uleb128 or sleb128 integers. To save space, as noted for each item below,
182 * some data is represented as a difference between the actual value and
183 * either the last value of the same type (like for timing information) or
184 * as the difference from a value stored in a buffer header.
186 * For timing information the data is stored as uleb128, since timing
187 * increases in a monotonic way in each thread: the value is the number of
188 * nanoseconds to add to the last seen timing data in a buffer. The first value
189 * in a buffer will be calculated from the time_base field in the buffer head.
191 * Object or heap sizes are stored as uleb128.
192 * Pointer differences are stored as sleb128, instead.
194 * If an unexpected value is found, the rest of the buffer should be ignored,
195 * as generally the later values need the former to be interpreted correctly.
197 * buffer header format:
198 * [bufid: 4 bytes] constant value: BUF_ID
199 * [len: 4 bytes] size of the data following the buffer header
200 * [time_base: 8 bytes] time base in nanoseconds since an unspecified epoch
201 * [ptr_base: 8 bytes] base value for pointers
202 * [obj_base: 8 bytes] base value for object addresses
203 * [thread id: 8 bytes] system-specific thread ID (pthread_t for example)
204 * [method_base: 8 bytes] base value for MonoMethod pointers
207 * [extended info: upper 4 bits] [type: lower 4 bits]
208 * [time diff: uleb128] nanoseconds since last timing
210 * The data that follows depends on type and the extended info.
211 * Type is one of the enum values in mono-profiler-log.h: TYPE_ALLOC, TYPE_GC,
212 * TYPE_METADATA, TYPE_METHOD, TYPE_EXCEPTION, TYPE_MONITOR, TYPE_HEAP.
213 * The extended info bits are interpreted based on type, see
214 * each individual event description below.
215 * strings are represented as a 0-terminated utf8 sequence.
218 * [num: uleb128] number of frames following
219 * [frame: sleb128]* mum MonoMethod* as a pointer difference from the last such
220 * pointer or the buffer method_base
224 * exinfo: flags: TYPE_ALLOC_BT
225 * [ptr: sleb128] class as a byte difference from ptr_base
226 * [obj: sleb128] object address as a byte difference from obj_base
227 * [size: uleb128] size of the object in the heap
228 * If the TYPE_ALLOC_BT flag is set, a backtrace follows.
232 * exinfo: one of TYPE_GC_EVENT, TYPE_GC_RESIZE, TYPE_GC_MOVE, TYPE_GC_HANDLE_CREATED[_BT],
233 * TYPE_GC_HANDLE_DESTROYED[_BT], TYPE_GC_FINALIZE_START, TYPE_GC_FINALIZE_END,
234 * TYPE_GC_FINALIZE_OBJECT_START, TYPE_GC_FINALIZE_OBJECT_END
235 * if exinfo == TYPE_GC_RESIZE
236 * [heap_size: uleb128] new heap size
237 * if exinfo == TYPE_GC_EVENT
238 * [event type: byte] GC event (MONO_GC_EVENT_* from profiler.h)
239 * [generation: byte] GC generation event refers to
240 * if exinfo == TYPE_GC_MOVE
241 * [num_objects: uleb128] number of object moves that follow
242 * [objaddr: sleb128]+ num_objects object pointer differences from obj_base
243 * num is always an even number: the even items are the old
244 * addresses, the odd numbers are the respective new object addresses
245 * if exinfo == TYPE_GC_HANDLE_CREATED[_BT]
246 * [handle_type: uleb128] GC handle type (System.Runtime.InteropServices.GCHandleType)
247 * upper bits reserved as flags
248 * [handle: uleb128] GC handle value
249 * [objaddr: sleb128] object pointer differences from obj_base
250 * If exinfo == TYPE_GC_HANDLE_CREATED_BT, a backtrace follows.
251 * if exinfo == TYPE_GC_HANDLE_DESTROYED[_BT]
252 * [handle_type: uleb128] GC handle type (System.Runtime.InteropServices.GCHandleType)
253 * upper bits reserved as flags
254 * [handle: uleb128] GC handle value
255 * If exinfo == TYPE_GC_HANDLE_DESTROYED_BT, a backtrace follows.
256 * if exinfo == TYPE_GC_FINALIZE_OBJECT_{START,END}
257 * [object: sleb128] the object as a difference from obj_base
259 * type metadata format:
260 * type: TYPE_METADATA
261 * exinfo: one of: TYPE_END_LOAD, TYPE_END_UNLOAD (optional for TYPE_THREAD and TYPE_DOMAIN)
262 * [mtype: byte] metadata type, one of: TYPE_CLASS, TYPE_IMAGE, TYPE_ASSEMBLY, TYPE_DOMAIN,
263 * TYPE_THREAD, TYPE_CONTEXT
264 * [pointer: sleb128] pointer of the metadata type depending on mtype
265 * if mtype == TYPE_CLASS
266 * [image: sleb128] MonoImage* as a pointer difference from ptr_base
267 * [name: string] full class name
268 * if mtype == TYPE_IMAGE
269 * [name: string] image file name
270 * if mtype == TYPE_ASSEMBLY
271 * [name: string] assembly name
272 * if mtype == TYPE_DOMAIN && exinfo == 0
273 * [name: string] domain friendly name
274 * if mtype == TYPE_CONTEXT
275 * [domain: sleb128] domain id as pointer
276 * if mtype == TYPE_THREAD && exinfo == 0
277 * [name: string] thread name
279 * type method format:
281 * exinfo: one of: TYPE_LEAVE, TYPE_ENTER, TYPE_EXC_LEAVE, TYPE_JIT
282 * [method: sleb128] MonoMethod* as a pointer difference from the last such
283 * pointer or the buffer method_base
284 * if exinfo == TYPE_JIT
285 * [code address: sleb128] pointer to the native code as a diff from ptr_base
286 * [code size: uleb128] size of the generated code
287 * [name: string] full method name
289 * type exception format:
290 * type: TYPE_EXCEPTION
291 * exinfo: TYPE_THROW_BT flag or one of: TYPE_CLAUSE
292 * if exinfo == TYPE_CLAUSE
293 * [clause type: byte] MonoExceptionEnum enum value
294 * [clause index: uleb128] index of the current clause
295 * [method: sleb128] MonoMethod* as a pointer difference from the last such
296 * pointer or the buffer method_base
298 * [object: sleb128] the exception object as a difference from obj_base
299 * if exinfo has TYPE_THROW_BT set, a backtrace follows.
301 * type runtime format:
303 * exinfo: one of: TYPE_JITHELPER
304 * if exinfo == TYPE_JITHELPER
305 * [type: byte] MonoProfilerCodeBufferType enum value
306 * [buffer address: sleb128] pointer to the native code as a diff from ptr_base
307 * [buffer size: uleb128] size of the generated code
308 * if type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE
309 * [name: string] buffer description name
311 * type monitor format:
313 * exinfo: TYPE_MONITOR_BT flag and one of: MONO_PROFILER_MONITOR_(CONTENTION|FAIL|DONE)
314 * [object: sleb128] the lock object as a difference from obj_base
315 * if exinfo.low3bits == MONO_PROFILER_MONITOR_CONTENTION
316 * If the TYPE_MONITOR_BT flag is set, a backtrace follows.
320 * exinfo: one of TYPE_HEAP_START, TYPE_HEAP_END, TYPE_HEAP_OBJECT, TYPE_HEAP_ROOT
321 * if exinfo == TYPE_HEAP_OBJECT
322 * [object: sleb128] the object as a difference from obj_base
323 * [class: sleb128] the object MonoClass* as a difference from ptr_base
324 * [size: uleb128] size of the object on the heap
325 * [num_refs: uleb128] number of object references
326 * each referenced objref is preceded by a uleb128 encoded offset: the
327 * first offset is from the object address and each next offset is relative
328 * to the previous one
329 * [objrefs: sleb128]+ object referenced as a difference from obj_base
330 * The same object can appear multiple times, but only the first time
331 * with size != 0: in the other cases this data will only be used to
332 * provide additional referenced objects.
333 * if exinfo == TYPE_HEAP_ROOT
334 * [num_roots: uleb128] number of root references
335 * [num_gc: uleb128] number of major gcs
336 * [object: sleb128] the object as a difference from obj_base
337 * [root_type: byte] the root_type: MonoProfileGCRootType (profiler.h)
338 * [extra_info: uleb128] the extra_info value
339 * object, root_type and extra_info are repeated num_roots times
343 * exinfo: one of TYPE_SAMPLE_HIT, TYPE_SAMPLE_USYM, TYPE_SAMPLE_UBIN, TYPE_SAMPLE_COUNTERS_DESC, TYPE_SAMPLE_COUNTERS
344 * if exinfo == TYPE_SAMPLE_HIT
345 * [thread: sleb128] thread id as difference from ptr_base
346 * [count: uleb128] number of following instruction addresses
347 * [ip: sleb128]* instruction pointer as difference from ptr_base
348 * [mbt_count: uleb128] number of managed backtrace frames
349 * [method: sleb128]* MonoMethod* as a pointer difference from the last such
350 * pointer or the buffer method_base (the first such method can be also indentified by ip, but this is not neccessarily true)
351 * if exinfo == TYPE_SAMPLE_USYM
352 * [address: sleb128] symbol address as a difference from ptr_base
353 * [size: uleb128] symbol size (may be 0 if unknown)
354 * [name: string] symbol name
355 * if exinfo == TYPE_SAMPLE_UBIN
356 * [address: sleb128] address where binary has been loaded
357 * [offset: uleb128] file offset of mapping (the same file can be mapped multiple times)
358 * [size: uleb128] memory size
359 * [name: string] binary name
360 * if exinfo == TYPE_SAMPLE_COUNTERS_DESC
361 * [len: uleb128] number of counters
363 * [section: uleb128] section of counter
364 * if section == MONO_COUNTER_PERFCOUNTERS:
365 * [section_name: string] section name of counter
366 * [name: string] name of counter
367 * [type: byte] type of counter
368 * [unit: byte] unit of counter
369 * [variance: byte] variance of counter
370 * [index: uleb128] unique index of counter
371 * if exinfo == TYPE_SAMPLE_COUNTERS
373 * [index: uleb128] unique index of counter
376 * [type: byte] type of counter value
379 * [0: uleb128] 0 -> value is null
381 * [1: uleb128] 1 -> value is not null
382 * [value: string] counter value
384 * [value: uleb128/sleb128/double] counter value, can be sleb128, uleb128 or double (determined by using type)
386 * type coverage format
387 * type: TYPE_COVERAGE
388 * exinfo: one of TYPE_COVERAGE_METHOD, TYPE_COVERAGE_STATEMENT, TYPE_COVERAGE_ASSEMBLY, TYPE_COVERAGE_CLASS
389 * if exinfo == TYPE_COVERAGE_METHOD
390 * [assembly: string] name of assembly
391 * [class: string] name of the class
392 * [name: string] name of the method
393 * [signature: string] the signature of the method
394 * [filename: string] the file path of the file that contains this method
395 * [token: uleb128] the method token
396 * [method_id: uleb128] an ID for this data to associate with the buffers of TYPE_COVERAGE_STATEMENTS
397 * [len: uleb128] the number of TYPE_COVERAGE_BUFFERS associated with this method
398 * if exinfo == TYPE_COVERAGE_STATEMENTS
399 * [method_id: uleb128] an the TYPE_COVERAGE_METHOD buffer to associate this with
400 * [offset: uleb128] the il offset relative to the previous offset
401 * [counter: uleb128] the counter for this instruction
402 * [line: uleb128] the line of filename containing this instruction
403 * [column: uleb128] the column containing this instruction
404 * if exinfo == TYPE_COVERAGE_ASSEMBLY
405 * [name: string] assembly name
406 * [guid: string] assembly GUID
407 * [filename: string] assembly filename
408 * [number_of_methods: uleb128] the number of methods in this assembly
409 * [fully_covered: uleb128] the number of fully covered methods
410 * [partially_covered: uleb128] the number of partially covered methods
411 * currently partially_covered will always be 0, and fully_covered is the
412 * number of methods that are fully and partially covered.
413 * if exinfo == TYPE_COVERAGE_CLASS
414 * [name: string] assembly name
415 * [class: string] class name
416 * [number_of_methods: uleb128] the number of methods in this class
417 * [fully_covered: uleb128] the number of fully covered methods
418 * [partially_covered: uleb128] the number of partially covered methods
419 * currently partially_covered will always be 0, and fully_covered is the
420 * number of methods that are fully and partially covered.
424 * exinfo: one of: TYPE_SYNC_POINT
425 * if exinfo == TYPE_SYNC_POINT
426 * [type: byte] MonoProfilerSyncPointType enum value
429 // Pending data to be written to the log, for a single thread.
430 // Threads periodically flush their own LogBuffers by calling safe_send
431 typedef struct _LogBuffer LogBuffer;
433 // Next (older) LogBuffer in processing queue
439 uintptr_t method_base;
440 uintptr_t last_method;
444 // Bytes allocated for this LogBuffer
447 // Start of currently unused space in buffer
448 unsigned char* cursor;
450 // Pointer to start-of-structure-plus-size (for convenience)
451 unsigned char* buf_end;
453 // Start of data in buffer. Contents follow "buffer format" described above.
454 unsigned char buf [1];
458 MonoLinkedListSetNode node;
460 // Convenience pointer to the profiler structure.
461 MonoProfiler *profiler;
463 // Was this thread added to the LLS?
466 // The current log buffer for this thread.
469 // Methods referenced by events in `buffer`, see `MethodInfo`.
472 // Current call depth for enter/leave events.
475 // Indicates whether this thread is currently writing to its `buffer`.
478 // Has this thread written a thread end event to `buffer`?
480 } MonoProfilerThread;
485 return (uintptr_t) mono_native_thread_id_get ();
492 return (uintptr_t) GetCurrentProcessId ();
494 return (uintptr_t) getpid ();
499 static mach_timebase_info_data_t timebase_info;
500 #elif defined (HOST_WIN32)
501 static LARGE_INTEGER pcounter_freq;
504 #define TICKS_PER_SEC 1000000000LL
510 uint64_t time = mach_absolute_time ();
512 time *= timebase_info.numer;
513 time /= timebase_info.denom;
516 #elif defined (HOST_WIN32)
519 QueryPerformanceCounter (&value);
521 return value.QuadPart * TICKS_PER_SEC / pcounter_freq.QuadPart;
522 #elif defined (CLOCK_MONOTONIC)
523 struct timespec tspec;
525 clock_gettime (CLOCK_MONOTONIC, &tspec);
527 return ((uint64_t) tspec.tv_sec * TICKS_PER_SEC + tspec.tv_nsec);
531 gettimeofday (&tv, NULL);
533 return ((uint64_t) tv.tv_sec * TICKS_PER_SEC + tv.tv_usec * 1000);
537 static int timer_overhead;
543 mach_timebase_info (&timebase_info);
544 #elif defined (HOST_WIN32)
545 QueryPerformanceFrequency (&pcounter_freq);
548 uint64_t time_start = current_time ();
550 for (int i = 0; i < 256; ++i)
553 uint64_t time_end = current_time ();
555 timer_overhead = (time_end - time_start) / 256;
559 * These macros should be used when writing an event to a log buffer. They take
560 * care of a bunch of stuff that can be repetitive and error-prone, such as
561 * acquiring/releasing the buffer lock, incrementing the event counter,
562 * expanding the log buffer, processing requests, etc. They also create a scope
563 * so that it's harder to leak the LogBuffer pointer, which can be problematic
564 * as the pointer is unstable when the buffer lock isn't acquired.
567 #define ENTER_LOG(COUNTER, BUFFER, SIZE) \
569 MonoProfilerThread *thread__ = PROF_TLS_GET (); \
570 if (thread__->attached) \
572 g_assert (!thread__->busy && "Why are we trying to write a new event while already writing one?"); \
573 thread__->busy = TRUE; \
574 InterlockedIncrement ((COUNTER)); \
575 LogBuffer *BUFFER = ensure_logbuf_unsafe (thread__, (SIZE))
577 #define EXIT_LOG_EXPLICIT(SEND) \
578 thread__->busy = FALSE; \
580 send_log_unsafe (TRUE); \
581 if (thread__->attached) \
585 // Pass these to EXIT_LOG_EXPLICIT () for easier reading.
587 #define NO_SEND FALSE
589 #define EXIT_LOG EXIT_LOG_EXPLICIT (DO_SEND)
591 static volatile gint32 buffer_rwlock_count;
592 static volatile gpointer buffer_rwlock_exclusive;
594 // Can be used recursively.
599 * If the thread holding the exclusive lock tries to modify the
600 * reader count, just make it a no-op. This way, we also avoid
601 * invoking the GC safe point macros below, which could break if
602 * done from a thread that is currently the initiator of STW.
604 * In other words, we rely on the fact that the GC thread takes
605 * the exclusive lock in the gc_event () callback when the world
608 if (InterlockedReadPointer (&buffer_rwlock_exclusive) != (gpointer) thread_id ()) {
611 while (InterlockedReadPointer (&buffer_rwlock_exclusive))
612 mono_thread_info_yield ();
614 InterlockedIncrement (&buffer_rwlock_count);
619 mono_memory_barrier ();
625 mono_memory_barrier ();
627 // See the comment in buffer_lock ().
628 if (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id ())
631 g_assert (InterlockedRead (&buffer_rwlock_count) && "Why are we trying to decrement a zero reader count?");
633 InterlockedDecrement (&buffer_rwlock_count);
636 // Cannot be used recursively.
638 buffer_lock_excl (void)
640 gpointer tid = (gpointer) thread_id ();
642 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) != tid && "Why are we taking the exclusive lock twice?");
646 while (InterlockedCompareExchangePointer (&buffer_rwlock_exclusive, tid, 0))
647 mono_thread_info_yield ();
649 while (InterlockedRead (&buffer_rwlock_count))
650 mono_thread_info_yield ();
654 mono_memory_barrier ();
658 buffer_unlock_excl (void)
660 mono_memory_barrier ();
662 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) && "Why is the exclusive lock not held?");
663 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why does another thread hold the exclusive lock?");
664 g_assert (!InterlockedRead (&buffer_rwlock_count) && "Why are there readers when the exclusive lock is held?");
666 InterlockedWritePointer (&buffer_rwlock_exclusive, NULL);
669 typedef struct _BinaryObject BinaryObject;
670 struct _BinaryObject {
676 struct _MonoProfiler {
678 #if defined (HAVE_SYS_ZLIB)
682 uint64_t startup_time;
687 MonoNativeThreadId helper_thread;
688 MonoNativeThreadId writer_thread;
689 MonoNativeThreadId dumper_thread;
690 volatile gint32 run_writer_thread;
691 MonoLockFreeAllocSizeClass writer_entry_size_class;
692 MonoLockFreeAllocator writer_entry_allocator;
693 MonoLockFreeQueue writer_queue;
694 MonoSemType writer_queue_sem;
695 MonoConcurrentHashTable *method_table;
696 mono_mutex_t method_table_mutex;
697 volatile gint32 run_dumper_thread;
698 MonoLockFreeQueue dumper_queue;
699 MonoSemType dumper_queue_sem;
700 MonoLockFreeAllocSizeClass sample_size_class;
701 MonoLockFreeAllocator sample_allocator;
702 MonoLockFreeQueue sample_reuse_queue;
703 BinaryObject *binary_objects;
704 GPtrArray *coverage_filters;
708 MonoLockFreeQueueNode node;
713 #define WRITER_ENTRY_BLOCK_SIZE (mono_pagesize ())
723 #define PROF_TLS_SET(VAL) (TlsSetValue (profiler_tls, (VAL)))
724 #define PROF_TLS_GET() ((MonoProfilerThread *) TlsGetValue (profiler_tls))
725 #define PROF_TLS_INIT() (profiler_tls = TlsAlloc ())
726 #define PROF_TLS_FREE() (TlsFree (profiler_tls))
728 static DWORD profiler_tls;
732 #define PROF_TLS_SET(VAL) (profiler_tls = (VAL))
733 #define PROF_TLS_GET() (profiler_tls)
734 #define PROF_TLS_INIT()
735 #define PROF_TLS_FREE()
737 static __thread MonoProfilerThread *profiler_tls;
741 #define PROF_TLS_SET(VAL) (pthread_setspecific (profiler_tls, (VAL)))
742 #define PROF_TLS_GET() ((MonoProfilerThread *) pthread_getspecific (profiler_tls))
743 #define PROF_TLS_INIT() (pthread_key_create (&profiler_tls, NULL))
744 #define PROF_TLS_FREE() (pthread_key_delete (profiler_tls))
746 static pthread_key_t profiler_tls;
751 pstrdup (const char *s)
753 int len = strlen (s) + 1;
754 char *p = (char *) g_malloc (len);
760 alloc_buffer (int size)
762 return mono_valloc (NULL, size, MONO_MMAP_READ | MONO_MMAP_WRITE | MONO_MMAP_ANON | MONO_MMAP_PRIVATE, MONO_MEM_ACCOUNT_PROFILER);
766 free_buffer (void *buf, int size)
768 mono_vfree (buf, size, MONO_MEM_ACCOUNT_PROFILER);
772 create_buffer (uintptr_t tid)
774 LogBuffer* buf = (LogBuffer *) alloc_buffer (BUFFER_SIZE);
776 InterlockedIncrement (&buffer_allocations_ctr);
778 buf->size = BUFFER_SIZE;
779 buf->time_base = current_time ();
780 buf->last_time = buf->time_base;
781 buf->buf_end = (unsigned char *) buf + buf->size;
782 buf->cursor = buf->buf;
783 buf->thread_id = tid;
789 * Must be called with the reader lock held if thread is the current thread, or
790 * the exclusive lock if thread is a different thread. However, if thread is
791 * the current thread, and init_thread () was called with add_to_lls = FALSE,
792 * then no locking is necessary.
795 init_buffer_state (MonoProfilerThread *thread)
797 thread->buffer = create_buffer (thread->node.key);
798 thread->methods = NULL;
802 clear_hazard_pointers (MonoThreadHazardPointers *hp)
804 mono_hazard_pointer_clear (hp, 0);
805 mono_hazard_pointer_clear (hp, 1);
806 mono_hazard_pointer_clear (hp, 2);
809 static MonoProfilerThread *
810 init_thread (MonoProfiler *prof, gboolean add_to_lls)
812 MonoProfilerThread *thread = PROF_TLS_GET ();
815 * Sometimes we may try to initialize a thread twice. One example is the
816 * main thread: We initialize it when setting up the profiler, but we will
817 * also get a thread_start () callback for it. Another example is when
818 * attaching new threads to the runtime: We may get a gc_alloc () callback
819 * for that thread's thread object (where we initialize it), soon followed
820 * by a thread_start () callback.
822 * These cases are harmless anyhow. Just return if we've already done the
823 * initialization work.
828 thread = g_malloc (sizeof (MonoProfilerThread));
829 thread->node.key = thread_id ();
830 thread->profiler = prof;
831 thread->attached = add_to_lls;
832 thread->call_depth = 0;
834 thread->ended = FALSE;
836 init_buffer_state (thread);
839 * Some internal profiler threads don't need to be cleaned up
840 * by the main thread on shutdown.
843 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
844 g_assert (mono_lls_insert (&profiler_thread_list, hp, &thread->node) && "Why can't we insert the thread in the LLS?");
845 clear_hazard_pointers (hp);
848 PROF_TLS_SET (thread);
853 // Only valid if init_thread () was called with add_to_lls = FALSE.
855 deinit_thread (MonoProfilerThread *thread)
857 g_assert (!thread->attached && "Why are we manually freeing an attached thread?");
863 // Only valid if init_thread () was called with add_to_lls = FALSE.
865 ensure_logbuf_unsafe (MonoProfilerThread *thread, int bytes)
867 LogBuffer *old = thread->buffer;
869 if (old && old->cursor + bytes + 100 < old->buf_end)
872 LogBuffer *new_ = create_buffer (thread->node.key);
874 thread->buffer = new_;
880 encode_uleb128 (uint64_t value, uint8_t *buf, uint8_t **endbuf)
885 uint8_t b = value & 0x7f;
888 if (value != 0) /* more bytes to come */
898 encode_sleb128 (intptr_t value, uint8_t *buf, uint8_t **endbuf)
901 int negative = (value < 0);
902 unsigned int size = sizeof (intptr_t) * 8;
910 /* the following is unnecessary if the
911 * implementation of >>= uses an arithmetic rather
912 * than logical shift for a signed left operand
916 value |= - ((intptr_t) 1 <<(size - 7));
918 /* sign bit of byte is second high order bit (0x40) */
919 if ((value == 0 && !(byte & 0x40)) ||
920 (value == -1 && (byte & 0x40)))
932 emit_byte (LogBuffer *logbuffer, int value)
934 logbuffer->cursor [0] = value;
937 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
941 emit_value (LogBuffer *logbuffer, int value)
943 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
945 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
949 emit_time (LogBuffer *logbuffer, uint64_t value)
951 uint64_t tdiff = value - logbuffer->last_time;
952 encode_uleb128 (tdiff, logbuffer->cursor, &logbuffer->cursor);
953 logbuffer->last_time = value;
955 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
959 emit_event_time (LogBuffer *logbuffer, int event, uint64_t time)
961 emit_byte (logbuffer, event);
962 emit_time (logbuffer, time);
966 emit_event (LogBuffer *logbuffer, int event)
968 emit_event_time (logbuffer, event, current_time ());
972 emit_svalue (LogBuffer *logbuffer, int64_t value)
974 encode_sleb128 (value, logbuffer->cursor, &logbuffer->cursor);
976 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
980 emit_uvalue (LogBuffer *logbuffer, uint64_t value)
982 encode_uleb128 (value, logbuffer->cursor, &logbuffer->cursor);
984 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
988 emit_ptr (LogBuffer *logbuffer, void *ptr)
990 if (!logbuffer->ptr_base)
991 logbuffer->ptr_base = (uintptr_t) ptr;
993 emit_svalue (logbuffer, (intptr_t) ptr - logbuffer->ptr_base);
995 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
999 emit_method_inner (LogBuffer *logbuffer, void *method)
1001 if (!logbuffer->method_base) {
1002 logbuffer->method_base = (intptr_t) method;
1003 logbuffer->last_method = (intptr_t) method;
1006 encode_sleb128 ((intptr_t) ((char *) method - (char *) logbuffer->last_method), logbuffer->cursor, &logbuffer->cursor);
1007 logbuffer->last_method = (intptr_t) method;
1009 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1013 register_method_local (MonoMethod *method, MonoJitInfo *ji)
1015 MonoProfilerThread *thread = PROF_TLS_GET ();
1017 if (!mono_conc_hashtable_lookup (thread->profiler->method_table, method)) {
1018 MethodInfo *info = (MethodInfo *) g_malloc (sizeof (MethodInfo));
1020 info->method = method;
1022 info->time = current_time ();
1024 GPtrArray *arr = thread->methods ? thread->methods : (thread->methods = g_ptr_array_new ());
1025 g_ptr_array_add (arr, info);
1030 emit_method (LogBuffer *logbuffer, MonoMethod *method)
1032 register_method_local (method, NULL);
1033 emit_method_inner (logbuffer, method);
1037 emit_obj (LogBuffer *logbuffer, void *ptr)
1039 if (!logbuffer->obj_base)
1040 logbuffer->obj_base = (uintptr_t) ptr >> 3;
1042 emit_svalue (logbuffer, ((uintptr_t) ptr >> 3) - logbuffer->obj_base);
1044 g_assert (logbuffer->cursor <= logbuffer->buf_end && "Why are we writing past the buffer end?");
1048 emit_string (LogBuffer *logbuffer, const char *str, size_t size)
1052 for (; i < size; i++) {
1055 emit_byte (logbuffer, str [i]);
1058 emit_byte (logbuffer, '\0');
1062 emit_double (LogBuffer *logbuffer, double value)
1065 unsigned char buffer[8];
1066 memcpy (buffer, &value, 8);
1067 #if G_BYTE_ORDER == G_BIG_ENDIAN
1068 for (i = 7; i >= 0; i--)
1070 for (i = 0; i < 8; i++)
1072 emit_byte (logbuffer, buffer[i]);
1076 write_int16 (char *buf, int32_t value)
1079 for (i = 0; i < 2; ++i) {
1087 write_int32 (char *buf, int32_t value)
1090 for (i = 0; i < 4; ++i) {
1098 write_int64 (char *buf, int64_t value)
1101 for (i = 0; i < 8; ++i) {
1109 write_header_string (char *p, const char *str)
1111 size_t len = strlen (str) + 1;
1113 p = write_int32 (p, len);
1120 dump_header (MonoProfiler *profiler)
1122 const char *args = profiler->args;
1123 const char *arch = mono_config_get_cpu ();
1124 const char *os = mono_config_get_os ();
1126 char *hbuf = g_malloc (
1127 sizeof (gint32) /* header id */ +
1128 sizeof (gint8) /* major version */ +
1129 sizeof (gint8) /* minor version */ +
1130 sizeof (gint8) /* data version */ +
1131 sizeof (gint8) /* word size */ +
1132 sizeof (gint64) /* startup time */ +
1133 sizeof (gint32) /* timer overhead */ +
1134 sizeof (gint32) /* flags */ +
1135 sizeof (gint32) /* process id */ +
1136 sizeof (gint16) /* command port */ +
1137 sizeof (gint32) + strlen (args) + 1 /* arguments */ +
1138 sizeof (gint32) + strlen (arch) + 1 /* architecture */ +
1139 sizeof (gint32) + strlen (os) + 1 /* operating system */
1143 p = write_int32 (p, LOG_HEADER_ID);
1144 *p++ = LOG_VERSION_MAJOR;
1145 *p++ = LOG_VERSION_MINOR;
1146 *p++ = LOG_DATA_VERSION;
1147 *p++ = sizeof (void *);
1148 p = write_int64 (p, ((uint64_t) time (NULL)) * 1000);
1149 p = write_int32 (p, timer_overhead);
1150 p = write_int32 (p, 0); /* flags */
1151 p = write_int32 (p, process_id ());
1152 p = write_int16 (p, profiler->command_port);
1153 p = write_header_string (p, args);
1154 p = write_header_string (p, arch);
1155 p = write_header_string (p, os);
1157 #if defined (HAVE_SYS_ZLIB)
1158 if (profiler->gzfile) {
1159 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1163 fwrite (hbuf, p - hbuf, 1, profiler->file);
1164 fflush (profiler->file);
1171 * Must be called with the reader lock held if thread is the current thread, or
1172 * the exclusive lock if thread is a different thread. However, if thread is
1173 * the current thread, and init_thread () was called with add_to_lls = FALSE,
1174 * then no locking is necessary.
1177 send_buffer (MonoProfilerThread *thread)
1179 WriterQueueEntry *entry = mono_lock_free_alloc (&thread->profiler->writer_entry_allocator);
1180 entry->methods = thread->methods;
1181 entry->buffer = thread->buffer;
1183 mono_lock_free_queue_node_init (&entry->node, FALSE);
1185 mono_lock_free_queue_enqueue (&thread->profiler->writer_queue, &entry->node);
1186 mono_os_sem_post (&thread->profiler->writer_queue_sem);
1190 free_thread (gpointer p)
1192 MonoProfilerThread *thread = p;
1194 if (!thread->ended) {
1196 * The thread is being cleaned up by the main thread during
1197 * shutdown. This typically happens for internal runtime
1198 * threads. We need to synthesize a thread end event.
1201 InterlockedIncrement (&thread_ends_ctr);
1203 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
1204 LogBuffer *buf = ensure_logbuf_unsafe (thread,
1205 EVENT_SIZE /* event */ +
1206 BYTE_SIZE /* type */ +
1207 LEB128_SIZE /* tid */
1210 emit_event (buf, TYPE_END_UNLOAD | TYPE_METADATA);
1211 emit_byte (buf, TYPE_THREAD);
1212 emit_ptr (buf, (void *) thread->node.key);
1216 send_buffer (thread);
1222 remove_thread (MonoProfilerThread *thread)
1224 MonoThreadHazardPointers *hp = mono_hazard_pointer_get ();
1226 if (mono_lls_remove (&profiler_thread_list, hp, &thread->node))
1227 mono_thread_hazardous_try_free (thread, free_thread);
1229 clear_hazard_pointers (hp);
1233 dump_buffer (MonoProfiler *profiler, LogBuffer *buf)
1239 dump_buffer (profiler, buf->next);
1241 if (buf->cursor - buf->buf) {
1242 p = write_int32 (p, BUF_ID);
1243 p = write_int32 (p, buf->cursor - buf->buf);
1244 p = write_int64 (p, buf->time_base);
1245 p = write_int64 (p, buf->ptr_base);
1246 p = write_int64 (p, buf->obj_base);
1247 p = write_int64 (p, buf->thread_id);
1248 p = write_int64 (p, buf->method_base);
1250 #if defined (HAVE_SYS_ZLIB)
1251 if (profiler->gzfile) {
1252 gzwrite (profiler->gzfile, hbuf, p - hbuf);
1253 gzwrite (profiler->gzfile, buf->buf, buf->cursor - buf->buf);
1257 fwrite (hbuf, p - hbuf, 1, profiler->file);
1258 fwrite (buf->buf, buf->cursor - buf->buf, 1, profiler->file);
1259 fflush (profiler->file);
1263 free_buffer (buf, buf->size);
1267 dump_buffer_threadless (MonoProfiler *profiler, LogBuffer *buf)
1269 for (LogBuffer *iter = buf; iter; iter = iter->next)
1270 iter->thread_id = 0;
1272 dump_buffer (profiler, buf);
1275 // Only valid if init_thread () was called with add_to_lls = FALSE.
1277 send_log_unsafe (gboolean if_needed)
1279 MonoProfilerThread *thread = PROF_TLS_GET ();
1281 if (!if_needed || (if_needed && thread->buffer->next)) {
1282 if (!thread->attached)
1283 for (LogBuffer *iter = thread->buffer; iter; iter = iter->next)
1284 iter->thread_id = 0;
1286 send_buffer (thread);
1287 init_buffer_state (thread);
1291 // Assumes that the exclusive lock is held.
1293 sync_point_flush (void)
1295 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why don't we hold the exclusive lock?");
1297 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
1298 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
1300 send_buffer (thread);
1301 init_buffer_state (thread);
1302 } MONO_LLS_FOREACH_SAFE_END
1305 // Assumes that the exclusive lock is held.
1307 sync_point_mark (MonoProfilerSyncPointType type)
1309 g_assert (InterlockedReadPointer (&buffer_rwlock_exclusive) == (gpointer) thread_id () && "Why don't we hold the exclusive lock?");
1311 ENTER_LOG (&sync_points_ctr, logbuffer,
1312 EVENT_SIZE /* event */ +
1313 LEB128_SIZE /* type */
1316 emit_event (logbuffer, TYPE_META | TYPE_SYNC_POINT);
1317 emit_byte (logbuffer, type);
1319 EXIT_LOG_EXPLICIT (NO_SEND);
1321 send_log_unsafe (FALSE);
1324 // Assumes that the exclusive lock is held.
1326 sync_point (MonoProfilerSyncPointType type)
1328 sync_point_flush ();
1329 sync_point_mark (type);
1333 gc_reference (MonoObject *obj, MonoClass *klass, uintptr_t size, uintptr_t num, MonoObject **refs, uintptr_t *offsets, void *data)
1335 /* account for object alignment in the heap */
1339 ENTER_LOG (&heap_objects_ctr, logbuffer,
1340 EVENT_SIZE /* event */ +
1341 LEB128_SIZE /* obj */ +
1342 LEB128_SIZE /* klass */ +
1343 LEB128_SIZE /* size */ +
1344 LEB128_SIZE /* num */ +
1346 LEB128_SIZE /* offset */ +
1347 LEB128_SIZE /* ref */
1351 emit_event (logbuffer, TYPE_HEAP_OBJECT | TYPE_HEAP);
1352 emit_obj (logbuffer, obj);
1353 emit_ptr (logbuffer, klass);
1354 emit_value (logbuffer, size);
1355 emit_value (logbuffer, num);
1357 uintptr_t last_offset = 0;
1359 for (int i = 0; i < num; ++i) {
1360 emit_value (logbuffer, offsets [i] - last_offset);
1361 last_offset = offsets [i];
1362 emit_obj (logbuffer, refs [i]);
1365 EXIT_LOG_EXPLICIT (DO_SEND);
1370 static unsigned int hs_mode_ms = 0;
1371 static unsigned int hs_mode_gc = 0;
1372 static unsigned int hs_mode_ondemand = 0;
1373 static unsigned int gc_count = 0;
1374 static uint64_t last_hs_time = 0;
1375 static gboolean do_heap_walk = FALSE;
1376 static gboolean ignore_heap_events;
1379 gc_roots (MonoProfiler *prof, int num, void **objects, int *root_types, uintptr_t *extra_info)
1381 if (ignore_heap_events)
1384 ENTER_LOG (&heap_roots_ctr, logbuffer,
1385 EVENT_SIZE /* event */ +
1386 LEB128_SIZE /* num */ +
1387 LEB128_SIZE /* collections */ +
1389 LEB128_SIZE /* object */ +
1390 LEB128_SIZE /* root type */ +
1391 LEB128_SIZE /* extra info */
1395 emit_event (logbuffer, TYPE_HEAP_ROOT | TYPE_HEAP);
1396 emit_value (logbuffer, num);
1397 emit_value (logbuffer, mono_gc_collection_count (mono_gc_max_generation ()));
1399 for (int i = 0; i < num; ++i) {
1400 emit_obj (logbuffer, objects [i]);
1401 emit_byte (logbuffer, root_types [i]);
1402 emit_value (logbuffer, extra_info [i]);
1405 EXIT_LOG_EXPLICIT (DO_SEND);
1410 trigger_on_demand_heapshot (void)
1412 if (heapshot_requested)
1413 mono_gc_collect (mono_gc_max_generation ());
1416 #define ALL_GC_EVENTS_MASK (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_EVENTS | PROFLOG_HEAPSHOT_FEATURE)
1419 gc_event (MonoProfiler *profiler, MonoGCEvent ev, int generation)
1421 if (ev == MONO_GC_EVENT_START) {
1422 uint64_t now = current_time ();
1424 if (hs_mode_ms && (now - last_hs_time) / 1000 * 1000 >= hs_mode_ms)
1425 do_heap_walk = TRUE;
1426 else if (hs_mode_gc && !(gc_count % hs_mode_gc))
1427 do_heap_walk = TRUE;
1428 else if (hs_mode_ondemand)
1429 do_heap_walk = heapshot_requested;
1430 else if (!hs_mode_ms && !hs_mode_gc && generation == mono_gc_max_generation ())
1431 do_heap_walk = TRUE;
1433 //If using heapshot, ignore events for collections we don't care
1434 if (ENABLED (PROFLOG_HEAPSHOT_FEATURE)) {
1435 // Ignore events generated during the collection itself (IE GC ROOTS)
1436 ignore_heap_events = !do_heap_walk;
1441 if (ENABLED (PROFLOG_GC_EVENTS)) {
1442 ENTER_LOG (&gc_events_ctr, logbuffer,
1443 EVENT_SIZE /* event */ +
1444 BYTE_SIZE /* gc event */ +
1445 BYTE_SIZE /* generation */
1448 emit_event (logbuffer, TYPE_GC_EVENT | TYPE_GC);
1449 emit_byte (logbuffer, ev);
1450 emit_byte (logbuffer, generation);
1452 EXIT_LOG_EXPLICIT (NO_SEND);
1456 case MONO_GC_EVENT_START:
1457 if (generation == mono_gc_max_generation ())
1461 case MONO_GC_EVENT_PRE_STOP_WORLD_LOCKED:
1463 * Ensure that no thread can be in the middle of writing to
1464 * a buffer when the world stops...
1466 buffer_lock_excl ();
1468 case MONO_GC_EVENT_POST_STOP_WORLD:
1470 * ... So that we now have a consistent view of all buffers.
1471 * This allows us to flush them. We need to do this because
1472 * they may contain object allocation events that need to be
1473 * committed to the log file before any object move events
1474 * that will be produced during this GC.
1476 if (ENABLED (ALL_GC_EVENTS_MASK))
1477 sync_point (SYNC_POINT_WORLD_STOP);
1480 * All heap events are surrounded by a HEAP_START and a HEAP_ENV event.
1481 * Right now, that's the case for GC Moves, GC Roots or heapshots.
1483 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1484 ENTER_LOG (&heap_starts_ctr, logbuffer,
1485 EVENT_SIZE /* event */
1488 emit_event (logbuffer, TYPE_HEAP_START | TYPE_HEAP);
1490 EXIT_LOG_EXPLICIT (DO_SEND);
1494 case MONO_GC_EVENT_PRE_START_WORLD:
1495 if (do_heap_shot && do_heap_walk)
1496 mono_gc_walk_heap (0, gc_reference, NULL);
1498 /* Matching HEAP_END to the HEAP_START from above */
1499 if (ENABLED (PROFLOG_GC_MOVES_EVENTS | PROFLOG_GC_ROOT_EVENTS) || do_heap_walk) {
1500 ENTER_LOG (&heap_ends_ctr, logbuffer,
1501 EVENT_SIZE /* event */
1504 emit_event (logbuffer, TYPE_HEAP_END | TYPE_HEAP);
1506 EXIT_LOG_EXPLICIT (DO_SEND);
1509 if (do_heap_shot && do_heap_walk) {
1510 do_heap_walk = FALSE;
1511 heapshot_requested = 0;
1512 last_hs_time = current_time ();
1516 * Similarly, we must now make sure that any object moves
1517 * written to the GC thread's buffer are flushed. Otherwise,
1518 * object allocation events for certain addresses could come
1519 * after the move events that made those addresses available.
1521 if (ENABLED (ALL_GC_EVENTS_MASK))
1522 sync_point_mark (SYNC_POINT_WORLD_START);
1524 case MONO_GC_EVENT_POST_START_WORLD_UNLOCKED:
1526 * Finally, it is safe to allow other threads to write to
1527 * their buffers again.
1529 buffer_unlock_excl ();
1537 gc_resize (MonoProfiler *profiler, int64_t new_size)
1539 ENTER_LOG (&gc_resizes_ctr, logbuffer,
1540 EVENT_SIZE /* event */ +
1541 LEB128_SIZE /* new size */
1544 emit_event (logbuffer, TYPE_GC_RESIZE | TYPE_GC);
1545 emit_value (logbuffer, new_size);
1547 EXIT_LOG_EXPLICIT (DO_SEND);
1552 MonoMethod* methods [MAX_FRAMES];
1553 int32_t il_offsets [MAX_FRAMES];
1554 int32_t native_offsets [MAX_FRAMES];
1557 static int num_frames = MAX_FRAMES;
1560 walk_stack (MonoMethod *method, int32_t native_offset, int32_t il_offset, mono_bool managed, void* data)
1562 FrameData *frame = (FrameData *)data;
1563 if (method && frame->count < num_frames) {
1564 frame->il_offsets [frame->count] = il_offset;
1565 frame->native_offsets [frame->count] = native_offset;
1566 frame->methods [frame->count++] = method;
1567 //printf ("In %d %s at %d (native: %d)\n", frame->count, mono_method_get_name (method), il_offset, native_offset);
1569 return frame->count == num_frames;
1573 * a note about stack walks: they can cause more profiler events to fire,
1574 * so we need to make sure they don't happen after we started emitting an
1575 * event, hence the collect_bt/emit_bt split.
1578 collect_bt (FrameData *data)
1581 mono_stack_walk_no_il (walk_stack, data);
1585 emit_bt (MonoProfiler *prof, LogBuffer *logbuffer, FrameData *data)
1587 /* FIXME: this is actually tons of data and we should
1588 * just output it the first time and use an id the next
1590 if (data->count > num_frames)
1591 printf ("bad num frames: %d\n", data->count);
1592 emit_value (logbuffer, data->count);
1593 //if (*p != data.count) {
1594 // 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);}
1595 while (data->count) {
1596 emit_method (logbuffer, data->methods [--data->count]);
1601 gc_alloc (MonoProfiler *prof, MonoObject *obj, MonoClass *klass)
1603 init_thread (prof, TRUE);
1605 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_ALLOC_BT : 0;
1607 uintptr_t len = mono_object_get_size (obj);
1608 /* account for object alignment in the heap */
1615 ENTER_LOG (&gc_allocs_ctr, logbuffer,
1616 EVENT_SIZE /* event */ +
1617 LEB128_SIZE /* klass */ +
1618 LEB128_SIZE /* obj */ +
1619 LEB128_SIZE /* size */ +
1621 LEB128_SIZE /* count */ +
1623 LEB128_SIZE /* method */
1628 emit_event (logbuffer, do_bt | TYPE_ALLOC);
1629 emit_ptr (logbuffer, klass);
1630 emit_obj (logbuffer, obj);
1631 emit_value (logbuffer, len);
1634 emit_bt (prof, logbuffer, &data);
1640 gc_moves (MonoProfiler *prof, void **objects, int num)
1642 ENTER_LOG (&gc_moves_ctr, logbuffer,
1643 EVENT_SIZE /* event */ +
1644 LEB128_SIZE /* num */ +
1646 LEB128_SIZE /* object */
1650 emit_event (logbuffer, TYPE_GC_MOVE | TYPE_GC);
1651 emit_value (logbuffer, num);
1653 for (int i = 0; i < num; ++i)
1654 emit_obj (logbuffer, objects [i]);
1656 EXIT_LOG_EXPLICIT (DO_SEND);
1660 gc_handle (MonoProfiler *prof, int op, int type, uintptr_t handle, MonoObject *obj)
1662 int do_bt = nocalls && InterlockedRead (&runtime_inited) && !notraces;
1668 gint32 *ctr = op == MONO_PROFILER_GC_HANDLE_CREATED ? &gc_handle_creations_ctr : &gc_handle_deletions_ctr;
1670 ENTER_LOG (ctr, logbuffer,
1671 EVENT_SIZE /* event */ +
1672 LEB128_SIZE /* type */ +
1673 LEB128_SIZE /* handle */ +
1674 (op == MONO_PROFILER_GC_HANDLE_CREATED ? (
1675 LEB128_SIZE /* obj */
1678 LEB128_SIZE /* count */ +
1680 LEB128_SIZE /* method */
1685 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1686 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_CREATED_BT : TYPE_GC_HANDLE_CREATED) | TYPE_GC);
1687 else if (op == MONO_PROFILER_GC_HANDLE_DESTROYED)
1688 emit_event (logbuffer, (do_bt ? TYPE_GC_HANDLE_DESTROYED_BT : TYPE_GC_HANDLE_DESTROYED) | TYPE_GC);
1690 g_assert_not_reached ();
1692 emit_value (logbuffer, type);
1693 emit_value (logbuffer, handle);
1695 if (op == MONO_PROFILER_GC_HANDLE_CREATED)
1696 emit_obj (logbuffer, obj);
1699 emit_bt (prof, logbuffer, &data);
1705 finalize_begin (MonoProfiler *prof)
1707 ENTER_LOG (&finalize_begins_ctr, buf,
1708 EVENT_SIZE /* event */
1711 emit_event (buf, TYPE_GC_FINALIZE_START | TYPE_GC);
1717 finalize_end (MonoProfiler *prof)
1719 trigger_on_demand_heapshot ();
1720 if (ENABLED (PROFLOG_FINALIZATION_EVENTS)) {
1721 ENTER_LOG (&finalize_ends_ctr, buf,
1722 EVENT_SIZE /* event */
1725 emit_event (buf, TYPE_GC_FINALIZE_END | TYPE_GC);
1732 finalize_object_begin (MonoProfiler *prof, MonoObject *obj)
1734 ENTER_LOG (&finalize_object_begins_ctr, buf,
1735 EVENT_SIZE /* event */ +
1736 LEB128_SIZE /* obj */
1739 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_START | TYPE_GC);
1740 emit_obj (buf, obj);
1746 finalize_object_end (MonoProfiler *prof, MonoObject *obj)
1748 ENTER_LOG (&finalize_object_ends_ctr, buf,
1749 EVENT_SIZE /* event */ +
1750 LEB128_SIZE /* obj */
1753 emit_event (buf, TYPE_GC_FINALIZE_OBJECT_END | TYPE_GC);
1754 emit_obj (buf, obj);
1760 push_nesting (char *p, MonoClass *klass)
1765 nesting = mono_class_get_nesting_type (klass);
1767 p = push_nesting (p, nesting);
1771 name = mono_class_get_name (klass);
1772 nspace = mono_class_get_namespace (klass);
1775 p += strlen (nspace);
1785 type_name (MonoClass *klass)
1789 push_nesting (buf, klass);
1790 p = (char *) g_malloc (strlen (buf) + 1);
1796 image_loaded (MonoProfiler *prof, MonoImage *image, int result)
1798 if (result != MONO_PROFILE_OK)
1801 const char *name = mono_image_get_filename (image);
1802 int nlen = strlen (name) + 1;
1804 ENTER_LOG (&image_loads_ctr, logbuffer,
1805 EVENT_SIZE /* event */ +
1806 BYTE_SIZE /* type */ +
1807 LEB128_SIZE /* image */ +
1811 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1812 emit_byte (logbuffer, TYPE_IMAGE);
1813 emit_ptr (logbuffer, image);
1814 memcpy (logbuffer->cursor, name, nlen);
1815 logbuffer->cursor += nlen;
1821 image_unloaded (MonoProfiler *prof, MonoImage *image)
1823 const char *name = mono_image_get_filename (image);
1824 int nlen = strlen (name) + 1;
1826 ENTER_LOG (&image_unloads_ctr, logbuffer,
1827 EVENT_SIZE /* event */ +
1828 BYTE_SIZE /* type */ +
1829 LEB128_SIZE /* image */ +
1833 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1834 emit_byte (logbuffer, TYPE_IMAGE);
1835 emit_ptr (logbuffer, image);
1836 memcpy (logbuffer->cursor, name, nlen);
1837 logbuffer->cursor += nlen;
1843 assembly_loaded (MonoProfiler *prof, MonoAssembly *assembly, int result)
1845 if (result != MONO_PROFILE_OK)
1848 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1849 int nlen = strlen (name) + 1;
1851 ENTER_LOG (&assembly_loads_ctr, logbuffer,
1852 EVENT_SIZE /* event */ +
1853 BYTE_SIZE /* type */ +
1854 LEB128_SIZE /* assembly */ +
1858 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1859 emit_byte (logbuffer, TYPE_ASSEMBLY);
1860 emit_ptr (logbuffer, assembly);
1861 memcpy (logbuffer->cursor, name, nlen);
1862 logbuffer->cursor += nlen;
1870 assembly_unloaded (MonoProfiler *prof, MonoAssembly *assembly)
1872 char *name = mono_stringify_assembly_name (mono_assembly_get_name (assembly));
1873 int nlen = strlen (name) + 1;
1875 ENTER_LOG (&assembly_unloads_ctr, logbuffer,
1876 EVENT_SIZE /* event */ +
1877 BYTE_SIZE /* type */ +
1878 LEB128_SIZE /* assembly */ +
1882 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1883 emit_byte (logbuffer, TYPE_ASSEMBLY);
1884 emit_ptr (logbuffer, assembly);
1885 memcpy (logbuffer->cursor, name, nlen);
1886 logbuffer->cursor += nlen;
1894 class_loaded (MonoProfiler *prof, MonoClass *klass, int result)
1896 if (result != MONO_PROFILE_OK)
1901 if (InterlockedRead (&runtime_inited))
1902 name = mono_type_get_name (mono_class_get_type (klass));
1904 name = type_name (klass);
1906 int nlen = strlen (name) + 1;
1907 MonoImage *image = mono_class_get_image (klass);
1909 ENTER_LOG (&class_loads_ctr, logbuffer,
1910 EVENT_SIZE /* event */ +
1911 BYTE_SIZE /* type */ +
1912 LEB128_SIZE /* klass */ +
1913 LEB128_SIZE /* image */ +
1917 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
1918 emit_byte (logbuffer, TYPE_CLASS);
1919 emit_ptr (logbuffer, klass);
1920 emit_ptr (logbuffer, image);
1921 memcpy (logbuffer->cursor, name, nlen);
1922 logbuffer->cursor += nlen;
1933 class_unloaded (MonoProfiler *prof, MonoClass *klass)
1937 if (InterlockedRead (&runtime_inited))
1938 name = mono_type_get_name (mono_class_get_type (klass));
1940 name = type_name (klass);
1942 int nlen = strlen (name) + 1;
1943 MonoImage *image = mono_class_get_image (klass);
1945 ENTER_LOG (&class_unloads_ctr, logbuffer,
1946 EVENT_SIZE /* event */ +
1947 BYTE_SIZE /* type */ +
1948 LEB128_SIZE /* klass */ +
1949 LEB128_SIZE /* image */ +
1953 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
1954 emit_byte (logbuffer, TYPE_CLASS);
1955 emit_ptr (logbuffer, klass);
1956 emit_ptr (logbuffer, image);
1957 memcpy (logbuffer->cursor, name, nlen);
1958 logbuffer->cursor += nlen;
1968 static void process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method);
1971 method_enter (MonoProfiler *prof, MonoMethod *method)
1973 process_method_enter_coverage (prof, method);
1975 if (!only_coverage && PROF_TLS_GET ()->call_depth++ <= max_call_depth) {
1976 ENTER_LOG (&method_entries_ctr, logbuffer,
1977 EVENT_SIZE /* event */ +
1978 LEB128_SIZE /* method */
1981 emit_event (logbuffer, TYPE_ENTER | TYPE_METHOD);
1982 emit_method (logbuffer, method);
1989 method_leave (MonoProfiler *prof, MonoMethod *method)
1991 if (!only_coverage && --PROF_TLS_GET ()->call_depth <= max_call_depth) {
1992 ENTER_LOG (&method_exits_ctr, logbuffer,
1993 EVENT_SIZE /* event */ +
1994 LEB128_SIZE /* method */
1997 emit_event (logbuffer, TYPE_LEAVE | TYPE_METHOD);
1998 emit_method (logbuffer, method);
2005 method_exc_leave (MonoProfiler *prof, MonoMethod *method)
2007 if (!only_coverage && !nocalls && --PROF_TLS_GET ()->call_depth <= max_call_depth) {
2008 ENTER_LOG (&method_exception_exits_ctr, logbuffer,
2009 EVENT_SIZE /* event */ +
2010 LEB128_SIZE /* method */
2013 emit_event (logbuffer, TYPE_EXC_LEAVE | TYPE_METHOD);
2014 emit_method (logbuffer, method);
2021 method_jitted (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *ji, int result)
2023 if (result != MONO_PROFILE_OK)
2026 register_method_local (method, ji);
2030 code_buffer_new (MonoProfiler *prof, void *buffer, int size, MonoProfilerCodeBufferType type, void *data)
2035 if (type == MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE) {
2036 name = (char *) data;
2037 nlen = strlen (name) + 1;
2043 ENTER_LOG (&code_buffers_ctr, logbuffer,
2044 EVENT_SIZE /* event */ +
2045 BYTE_SIZE /* type */ +
2046 LEB128_SIZE /* buffer */ +
2047 LEB128_SIZE /* size */ +
2053 emit_event (logbuffer, TYPE_JITHELPER | TYPE_RUNTIME);
2054 emit_byte (logbuffer, type);
2055 emit_ptr (logbuffer, buffer);
2056 emit_value (logbuffer, size);
2059 memcpy (logbuffer->cursor, name, nlen);
2060 logbuffer->cursor += nlen;
2067 throw_exc (MonoProfiler *prof, MonoObject *object)
2069 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_THROW_BT : 0;
2075 ENTER_LOG (&exception_throws_ctr, logbuffer,
2076 EVENT_SIZE /* event */ +
2077 LEB128_SIZE /* object */ +
2079 LEB128_SIZE /* count */ +
2081 LEB128_SIZE /* method */
2086 emit_event (logbuffer, do_bt | TYPE_EXCEPTION);
2087 emit_obj (logbuffer, object);
2090 emit_bt (prof, logbuffer, &data);
2096 clause_exc (MonoProfiler *prof, MonoMethod *method, int clause_type, int clause_num)
2098 ENTER_LOG (&exception_clauses_ctr, logbuffer,
2099 EVENT_SIZE /* event */ +
2100 BYTE_SIZE /* clause type */ +
2101 LEB128_SIZE /* clause num */ +
2102 LEB128_SIZE /* method */
2105 emit_event (logbuffer, TYPE_EXCEPTION | TYPE_CLAUSE);
2106 emit_byte (logbuffer, clause_type);
2107 emit_value (logbuffer, clause_num);
2108 emit_method (logbuffer, method);
2114 monitor_event (MonoProfiler *profiler, MonoObject *object, MonoProfilerMonitorEvent ev)
2116 int do_bt = (nocalls && InterlockedRead (&runtime_inited) && !notraces) ? TYPE_MONITOR_BT : 0;
2122 ENTER_LOG (&monitor_events_ctr, logbuffer,
2123 EVENT_SIZE /* event */ +
2124 BYTE_SIZE /* ev */ +
2125 LEB128_SIZE /* object */ +
2127 LEB128_SIZE /* count */ +
2129 LEB128_SIZE /* method */
2134 emit_event (logbuffer, do_bt | TYPE_MONITOR);
2135 emit_byte (logbuffer, ev);
2136 emit_obj (logbuffer, object);
2139 emit_bt (profiler, logbuffer, &data);
2145 thread_start (MonoProfiler *prof, uintptr_t tid)
2147 init_thread (prof, TRUE);
2149 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2150 ENTER_LOG (&thread_starts_ctr, logbuffer,
2151 EVENT_SIZE /* event */ +
2152 BYTE_SIZE /* type */ +
2153 LEB128_SIZE /* tid */
2156 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2157 emit_byte (logbuffer, TYPE_THREAD);
2158 emit_ptr (logbuffer, (void*) tid);
2165 thread_end (MonoProfiler *prof, uintptr_t tid)
2167 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2168 ENTER_LOG (&thread_ends_ctr, logbuffer,
2169 EVENT_SIZE /* event */ +
2170 BYTE_SIZE /* type */ +
2171 LEB128_SIZE /* tid */
2174 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2175 emit_byte (logbuffer, TYPE_THREAD);
2176 emit_ptr (logbuffer, (void*) tid);
2178 EXIT_LOG_EXPLICIT (NO_SEND);
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 if (ENABLED (PROFLOG_THREAD_EVENTS)) {
2195 ENTER_LOG (&thread_names_ctr, logbuffer,
2196 EVENT_SIZE /* event */ +
2197 BYTE_SIZE /* type */ +
2198 LEB128_SIZE /* tid */ +
2202 emit_event (logbuffer, TYPE_METADATA);
2203 emit_byte (logbuffer, TYPE_THREAD);
2204 emit_ptr (logbuffer, (void*)tid);
2205 memcpy (logbuffer->cursor, name, len);
2206 logbuffer->cursor += len;
2213 domain_loaded (MonoProfiler *prof, MonoDomain *domain, int result)
2215 if (result != MONO_PROFILE_OK)
2218 ENTER_LOG (&domain_loads_ctr, logbuffer,
2219 EVENT_SIZE /* event */ +
2220 BYTE_SIZE /* type */ +
2221 LEB128_SIZE /* domain id */
2224 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2225 emit_byte (logbuffer, TYPE_DOMAIN);
2226 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2232 domain_unloaded (MonoProfiler *prof, MonoDomain *domain)
2234 ENTER_LOG (&domain_unloads_ctr, logbuffer,
2235 EVENT_SIZE /* event */ +
2236 BYTE_SIZE /* type */ +
2237 LEB128_SIZE /* domain id */
2240 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2241 emit_byte (logbuffer, TYPE_DOMAIN);
2242 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2248 domain_name (MonoProfiler *prof, MonoDomain *domain, const char *name)
2250 int nlen = strlen (name) + 1;
2252 ENTER_LOG (&domain_names_ctr, logbuffer,
2253 EVENT_SIZE /* event */ +
2254 BYTE_SIZE /* type */ +
2255 LEB128_SIZE /* domain id */ +
2259 emit_event (logbuffer, TYPE_METADATA);
2260 emit_byte (logbuffer, TYPE_DOMAIN);
2261 emit_ptr (logbuffer, (void*)(uintptr_t) mono_domain_get_id (domain));
2262 memcpy (logbuffer->cursor, name, nlen);
2263 logbuffer->cursor += nlen;
2269 context_loaded (MonoProfiler *prof, MonoAppContext *context)
2271 ENTER_LOG (&context_loads_ctr, logbuffer,
2272 EVENT_SIZE /* event */ +
2273 BYTE_SIZE /* type */ +
2274 LEB128_SIZE /* context id */ +
2275 LEB128_SIZE /* domain id */
2278 emit_event (logbuffer, TYPE_END_LOAD | TYPE_METADATA);
2279 emit_byte (logbuffer, TYPE_CONTEXT);
2280 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2281 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2287 context_unloaded (MonoProfiler *prof, MonoAppContext *context)
2289 ENTER_LOG (&context_unloads_ctr, logbuffer,
2290 EVENT_SIZE /* event */ +
2291 BYTE_SIZE /* type */ +
2292 LEB128_SIZE /* context id */ +
2293 LEB128_SIZE /* domain id */
2296 emit_event (logbuffer, TYPE_END_UNLOAD | TYPE_METADATA);
2297 emit_byte (logbuffer, TYPE_CONTEXT);
2298 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_id (context));
2299 emit_ptr (logbuffer, (void*)(uintptr_t) mono_context_get_domain_id (context));
2312 MonoLockFreeQueueNode node;
2318 AsyncFrameInfo frames [MONO_ZERO_LEN_ARRAY];
2322 async_walk_stack (MonoMethod *method, MonoDomain *domain, void *base_address, int offset, void *data)
2324 SampleHit *sample = (SampleHit *) data;
2326 if (sample->count < num_frames) {
2327 int i = sample->count;
2329 sample->frames [i].method = method;
2330 sample->frames [i].domain = domain;
2331 sample->frames [i].base_address = base_address;
2332 sample->frames [i].offset = offset;
2337 return sample->count == num_frames;
2340 #define SAMPLE_SLOT_SIZE(FRAMES) (sizeof (SampleHit) + sizeof (AsyncFrameInfo) * (FRAMES - MONO_ZERO_LEN_ARRAY))
2341 #define SAMPLE_BLOCK_SIZE (mono_pagesize ())
2344 enqueue_sample_hit (gpointer p)
2346 SampleHit *sample = p;
2348 mono_lock_free_queue_node_unpoison (&sample->node);
2349 mono_lock_free_queue_enqueue (&sample->prof->dumper_queue, &sample->node);
2350 mono_os_sem_post (&sample->prof->dumper_queue_sem);
2354 mono_sample_hit (MonoProfiler *profiler, unsigned char *ip, void *context)
2357 * Please note: We rely on the runtime loading the profiler with
2358 * MONO_DL_EAGER (RTLD_NOW) so that references to runtime functions within
2359 * this function (and its siblings) are resolved when the profiler is
2360 * loaded. Otherwise, we would potentially invoke the dynamic linker when
2361 * invoking runtime functions, which is not async-signal-safe.
2364 if (InterlockedRead (&in_shutdown))
2367 SampleHit *sample = (SampleHit *) mono_lock_free_queue_dequeue (&profiler->sample_reuse_queue);
2371 * If we're out of reusable sample events and we're not allowed to
2372 * allocate more, we have no choice but to drop the event.
2374 if (InterlockedRead (&sample_allocations_ctr) >= max_allocated_sample_hits)
2377 sample = mono_lock_free_alloc (&profiler->sample_allocator);
2378 sample->prof = profiler;
2379 mono_lock_free_queue_node_init (&sample->node, TRUE);
2381 InterlockedIncrement (&sample_allocations_ctr);
2385 mono_stack_walk_async_safe (&async_walk_stack, context, sample);
2387 sample->time = current_time ();
2388 sample->tid = thread_id ();
2391 mono_thread_hazardous_try_free (sample, enqueue_sample_hit);
2394 static uintptr_t *code_pages = 0;
2395 static int num_code_pages = 0;
2396 static int size_code_pages = 0;
2397 #define CPAGE_SHIFT (9)
2398 #define CPAGE_SIZE (1 << CPAGE_SHIFT)
2399 #define CPAGE_MASK (~(CPAGE_SIZE - 1))
2400 #define CPAGE_ADDR(p) ((p) & CPAGE_MASK)
2403 add_code_page (uintptr_t *hash, uintptr_t hsize, uintptr_t page)
2406 uintptr_t start_pos;
2407 start_pos = (page >> CPAGE_SHIFT) % hsize;
2410 if (hash [i] && CPAGE_ADDR (hash [i]) == CPAGE_ADDR (page)) {
2412 } else if (!hash [i]) {
2419 } while (i != start_pos);
2420 /* should not happen */
2421 printf ("failed code page store\n");
2426 add_code_pointer (uintptr_t ip)
2429 if (num_code_pages * 2 >= size_code_pages) {
2431 uintptr_t old_size = size_code_pages;
2432 size_code_pages *= 2;
2433 if (size_code_pages == 0)
2434 size_code_pages = 16;
2435 n = (uintptr_t *) g_calloc (sizeof (uintptr_t) * size_code_pages, 1);
2436 for (i = 0; i < old_size; ++i) {
2438 add_code_page (n, size_code_pages, code_pages [i]);
2441 g_free (code_pages);
2444 num_code_pages += add_code_page (code_pages, size_code_pages, ip & CPAGE_MASK);
2447 /* ELF code crashes on some systems. */
2448 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2451 dump_ubin (MonoProfiler *prof, const char *filename, uintptr_t load_addr, uint64_t offset, uintptr_t size)
2453 int len = strlen (filename) + 1;
2455 ENTER_LOG (&sample_ubins_ctr, logbuffer,
2456 EVENT_SIZE /* event */ +
2457 LEB128_SIZE /* load address */ +
2458 LEB128_SIZE /* offset */ +
2459 LEB128_SIZE /* size */ +
2460 nlen /* file name */
2463 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_UBIN);
2464 emit_svalue (logbuffer, load_addr);
2465 emit_uvalue (logbuffer, offset);
2466 emit_uvalue (logbuffer, size);
2467 memcpy (logbuffer->cursor, filename, len);
2468 logbuffer->cursor += len;
2470 EXIT_LOG_EXPLICIT (DO_SEND);
2475 dump_usym (MonoProfiler *prof, const char *name, uintptr_t value, uintptr_t size)
2477 int len = strlen (name) + 1;
2479 ENTER_LOG (&sample_usyms_ctr, logbuffer,
2480 EVENT_SIZE /* event */ +
2481 LEB128_SIZE /* value */ +
2482 LEB128_SIZE /* size */ +
2486 emit_event (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_USYM);
2487 emit_ptr (logbuffer, (void*)value);
2488 emit_value (logbuffer, size);
2489 memcpy (logbuffer->cursor, name, len);
2490 logbuffer->cursor += len;
2492 EXIT_LOG_EXPLICIT (DO_SEND);
2495 /* ELF code crashes on some systems. */
2496 //#if defined(ELFMAG0)
2499 #if SIZEOF_VOID_P == 4
2500 #define ELF_WSIZE 32
2502 #define ELF_WSIZE 64
2505 #define ElfW(type) _ElfW (Elf, ELF_WSIZE, type)
2506 #define _ElfW(e,w,t) _ElfW_1 (e, w, _##t)
2507 #define _ElfW_1(e,w,t) e##w##t
2511 dump_elf_symbols (MonoProfiler *prof, ElfW(Sym) *symbols, int num_symbols, const char *strtab, void *load_addr)
2514 for (i = 0; i < num_symbols; ++i) {
2516 sym = strtab + symbols [i].st_name;
2517 if (!symbols [i].st_name || !symbols [i].st_size || (symbols [i].st_info & 0xf) != STT_FUNC)
2519 //printf ("symbol %s at %d\n", sym, symbols [i].st_value);
2520 dump_usym (sym, (uintptr_t)load_addr + symbols [i].st_value, symbols [i].st_size);
2525 read_elf_symbols (MonoProfiler *prof, const char *filename, void *load_addr)
2532 ElfW(Shdr) *sheader;
2533 ElfW(Shdr) *shstrtabh;
2534 ElfW(Shdr) *symtabh = NULL;
2535 ElfW(Shdr) *strtabh = NULL;
2536 ElfW(Sym) *symbols = NULL;
2540 fd = open (filename, O_RDONLY);
2543 if (fstat (fd, &statb) != 0) {
2547 file_size = statb.st_size;
2548 data = mmap (NULL, file_size, PROT_READ, MAP_PRIVATE, fd, 0);
2550 if (data == MAP_FAILED)
2553 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2554 header->e_ident [EI_MAG1] != ELFMAG1 ||
2555 header->e_ident [EI_MAG2] != ELFMAG2 ||
2556 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2557 munmap (data, file_size);
2560 sheader = (void*)((char*)data + header->e_shoff);
2561 shstrtabh = (void*)((char*)sheader + (header->e_shentsize * header->e_shstrndx));
2562 strtab = (const char*)data + shstrtabh->sh_offset;
2563 for (i = 0; i < header->e_shnum; ++i) {
2564 //printf ("section header: %d\n", sheader->sh_type);
2565 if (sheader->sh_type == SHT_SYMTAB) {
2567 strtabh = (void*)((char*)data + header->e_shoff + sheader->sh_link * header->e_shentsize);
2568 /*printf ("symtab section header: %d, .strstr: %d\n", i, sheader->sh_link);*/
2571 sheader = (void*)((char*)sheader + header->e_shentsize);
2573 if (!symtabh || !strtabh) {
2574 munmap (data, file_size);
2577 strtab = (const char*)data + strtabh->sh_offset;
2578 num_symbols = symtabh->sh_size / symtabh->sh_entsize;
2579 symbols = (void*)((char*)data + symtabh->sh_offset);
2580 dump_elf_symbols (symbols, num_symbols, strtab, load_addr);
2581 munmap (data, file_size);
2586 /* ELF code crashes on some systems. */
2587 //#if defined(HAVE_DL_ITERATE_PHDR) && defined(ELFMAG0)
2590 elf_dl_callback (struct dl_phdr_info *info, size_t size, void *data)
2592 MonoProfiler *prof = data;
2594 const char *filename;
2596 char *a = (void*)info->dlpi_addr;
2598 ElfW(Dyn) *dyn = NULL;
2599 ElfW(Sym) *symtab = NULL;
2600 ElfW(Word) *hash_table = NULL;
2601 ElfW(Ehdr) *header = NULL;
2602 const char* strtab = NULL;
2603 for (obj = prof->binary_objects; obj; obj = obj->next) {
2607 filename = info->dlpi_name;
2610 if (!info->dlpi_addr && !filename [0]) {
2611 int l = readlink ("/proc/self/exe", buf, sizeof (buf) - 1);
2617 obj = g_calloc (sizeof (BinaryObject), 1);
2618 obj->addr = (void*)info->dlpi_addr;
2619 obj->name = pstrdup (filename);
2620 obj->next = prof->binary_objects;
2621 prof->binary_objects = obj;
2622 //printf ("loaded file: %s at %p, segments: %d\n", filename, (void*)info->dlpi_addr, info->dlpi_phnum);
2624 for (i = 0; i < info->dlpi_phnum; ++i) {
2625 //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);
2626 if (info->dlpi_phdr[i].p_type == PT_LOAD && !header) {
2627 header = (ElfW(Ehdr)*)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2628 if (header->e_ident [EI_MAG0] != ELFMAG0 ||
2629 header->e_ident [EI_MAG1] != ELFMAG1 ||
2630 header->e_ident [EI_MAG2] != ELFMAG2 ||
2631 header->e_ident [EI_MAG3] != ELFMAG3 ) {
2634 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);
2635 } else if (info->dlpi_phdr[i].p_type == PT_DYNAMIC) {
2636 dyn = (ElfW(Dyn) *)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
2639 if (read_elf_symbols (prof, filename, (void*)info->dlpi_addr))
2641 if (!info->dlpi_name || !info->dlpi_name[0])
2645 for (i = 0; dyn [i].d_tag != DT_NULL; ++i) {
2646 if (dyn [i].d_tag == DT_SYMTAB) {
2647 if (symtab && do_debug)
2648 printf ("multiple symtabs: %d\n", i);
2649 symtab = (ElfW(Sym) *)(a + dyn [i].d_un.d_ptr);
2650 } else if (dyn [i].d_tag == DT_HASH) {
2651 hash_table = (ElfW(Word) *)(a + dyn [i].d_un.d_ptr);
2652 } else if (dyn [i].d_tag == DT_STRTAB) {
2653 strtab = (const char*)(a + dyn [i].d_un.d_ptr);
2658 num_sym = hash_table [1];
2659 dump_elf_symbols (prof, symtab, num_sym, strtab, (void*)info->dlpi_addr);
2664 load_binaries (MonoProfiler *prof)
2666 dl_iterate_phdr (elf_dl_callback, prof);
2671 load_binaries (MonoProfiler *prof)
2678 symbol_for (uintptr_t code)
2681 void *ip = (void*)code;
2683 if (dladdr (ip, &di)) {
2685 return di.dli_sname;
2688 names = backtrace_symbols (&ip, 1);
2690 const char* p = names [0];
2701 dump_unmanaged_coderefs (MonoProfiler *prof)
2704 const char* last_symbol;
2705 uintptr_t addr, page_end;
2707 if (load_binaries (prof))
2709 for (i = 0; i < size_code_pages; ++i) {
2711 if (!code_pages [i] || code_pages [i] & 1)
2714 addr = CPAGE_ADDR (code_pages [i]);
2715 page_end = addr + CPAGE_SIZE;
2716 code_pages [i] |= 1;
2717 /* we dump the symbols for the whole page */
2718 for (; addr < page_end; addr += 16) {
2719 sym = symbol_for (addr);
2720 if (sym && sym == last_symbol)
2725 dump_usym (prof, sym, addr, 0); /* let's not guess the size */
2726 //printf ("found symbol at %p: %s\n", (void*)addr, sym);
2731 typedef struct MonoCounterAgent {
2732 MonoCounter *counter;
2733 // MonoCounterAgent specific data :
2738 struct MonoCounterAgent *next;
2741 static MonoCounterAgent* counters;
2742 static int counters_index = 1;
2743 static mono_mutex_t counters_mutex;
2746 counters_add_agent (MonoCounter *counter)
2748 if (InterlockedRead (&in_shutdown))
2751 MonoCounterAgent *agent, *item;
2753 mono_os_mutex_lock (&counters_mutex);
2755 for (agent = counters; agent; agent = agent->next) {
2756 if (agent->counter == counter) {
2757 agent->value_size = 0;
2759 g_free (agent->value);
2760 agent->value = NULL;
2766 agent = (MonoCounterAgent *) g_malloc (sizeof (MonoCounterAgent));
2767 agent->counter = counter;
2768 agent->value = NULL;
2769 agent->value_size = 0;
2770 agent->index = counters_index++;
2784 mono_os_mutex_unlock (&counters_mutex);
2788 counters_init_foreach_callback (MonoCounter *counter, gpointer data)
2790 counters_add_agent (counter);
2795 counters_init (MonoProfiler *profiler)
2797 mono_os_mutex_init (&counters_mutex);
2799 mono_counters_on_register (&counters_add_agent);
2800 mono_counters_foreach (counters_init_foreach_callback, NULL);
2804 counters_emit (MonoProfiler *profiler)
2806 MonoCounterAgent *agent;
2809 EVENT_SIZE /* event */ +
2810 LEB128_SIZE /* len */
2813 mono_os_mutex_lock (&counters_mutex);
2815 for (agent = counters; agent; agent = agent->next) {
2820 LEB128_SIZE /* section */ +
2821 strlen (mono_counter_get_name (agent->counter)) + 1 /* name */ +
2822 BYTE_SIZE /* type */ +
2823 BYTE_SIZE /* unit */ +
2824 BYTE_SIZE /* variance */ +
2825 LEB128_SIZE /* index */
2834 ENTER_LOG (&counter_descriptors_ctr, logbuffer, size);
2836 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
2837 emit_value (logbuffer, len);
2839 for (agent = counters; agent; agent = agent->next) {
2845 name = mono_counter_get_name (agent->counter);
2846 emit_value (logbuffer, mono_counter_get_section (agent->counter));
2847 emit_string (logbuffer, name, strlen (name) + 1);
2848 emit_byte (logbuffer, mono_counter_get_type (agent->counter));
2849 emit_byte (logbuffer, mono_counter_get_unit (agent->counter));
2850 emit_byte (logbuffer, mono_counter_get_variance (agent->counter));
2851 emit_value (logbuffer, agent->index);
2856 EXIT_LOG_EXPLICIT (DO_SEND);
2859 mono_os_mutex_unlock (&counters_mutex);
2863 counters_sample (MonoProfiler *profiler, uint64_t timestamp)
2865 MonoCounterAgent *agent;
2866 MonoCounter *counter;
2872 counters_emit (profiler);
2875 buffer = g_calloc (1, buffer_size);
2877 mono_os_mutex_lock (&counters_mutex);
2880 EVENT_SIZE /* event */
2883 for (agent = counters; agent; agent = agent->next) {
2885 LEB128_SIZE /* index */ +
2886 BYTE_SIZE /* type */ +
2887 mono_counter_get_size (agent->counter) /* value */
2892 LEB128_SIZE /* stop marker */
2895 ENTER_LOG (&counter_samples_ctr, logbuffer, size);
2897 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
2899 for (agent = counters; agent; agent = agent->next) {
2902 counter = agent->counter;
2904 size = mono_counter_get_size (counter);
2906 if (size > buffer_size) {
2908 buffer = g_realloc (buffer, buffer_size);
2911 memset (buffer, 0, buffer_size);
2913 g_assert (mono_counters_sample (counter, buffer, size));
2915 type = mono_counter_get_type (counter);
2917 if (!agent->value) {
2918 agent->value = g_calloc (1, size);
2919 agent->value_size = size;
2921 if (type == MONO_COUNTER_STRING) {
2922 if (strcmp (agent->value, buffer) == 0)
2925 if (agent->value_size == size && memcmp (agent->value, buffer, size) == 0)
2930 emit_uvalue (logbuffer, agent->index);
2931 emit_byte (logbuffer, type);
2933 case MONO_COUNTER_INT:
2934 #if SIZEOF_VOID_P == 4
2935 case MONO_COUNTER_WORD:
2937 emit_svalue (logbuffer, *(int*)buffer - *(int*)agent->value);
2939 case MONO_COUNTER_UINT:
2940 emit_uvalue (logbuffer, *(guint*)buffer - *(guint*)agent->value);
2942 case MONO_COUNTER_TIME_INTERVAL:
2943 case MONO_COUNTER_LONG:
2944 #if SIZEOF_VOID_P == 8
2945 case MONO_COUNTER_WORD:
2947 emit_svalue (logbuffer, *(gint64*)buffer - *(gint64*)agent->value);
2949 case MONO_COUNTER_ULONG:
2950 emit_uvalue (logbuffer, *(guint64*)buffer - *(guint64*)agent->value);
2952 case MONO_COUNTER_DOUBLE:
2953 emit_double (logbuffer, *(double*)buffer);
2955 case MONO_COUNTER_STRING:
2957 emit_byte (logbuffer, 0);
2959 emit_byte (logbuffer, 1);
2960 emit_string (logbuffer, (char*)buffer, size);
2964 g_assert_not_reached ();
2967 if (type == MONO_COUNTER_STRING && size > agent->value_size) {
2968 agent->value = g_realloc (agent->value, size);
2969 agent->value_size = size;
2973 memcpy (agent->value, buffer, size);
2977 emit_value (logbuffer, 0);
2979 EXIT_LOG_EXPLICIT (DO_SEND);
2981 mono_os_mutex_unlock (&counters_mutex);
2984 typedef struct _PerfCounterAgent PerfCounterAgent;
2985 struct _PerfCounterAgent {
2986 PerfCounterAgent *next;
2988 char *category_name;
2997 static PerfCounterAgent *perfcounters = NULL;
3000 perfcounters_emit (MonoProfiler *profiler)
3002 PerfCounterAgent *pcagent;
3005 EVENT_SIZE /* event */ +
3006 LEB128_SIZE /* len */
3009 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3010 if (pcagent->emitted)
3014 LEB128_SIZE /* section */ +
3015 strlen (pcagent->category_name) + 1 /* category name */ +
3016 strlen (pcagent->name) + 1 /* name */ +
3017 BYTE_SIZE /* type */ +
3018 BYTE_SIZE /* unit */ +
3019 BYTE_SIZE /* variance */ +
3020 LEB128_SIZE /* index */
3029 ENTER_LOG (&perfcounter_descriptors_ctr, logbuffer, size);
3031 emit_event (logbuffer, TYPE_SAMPLE_COUNTERS_DESC | TYPE_SAMPLE);
3032 emit_value (logbuffer, len);
3034 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3035 if (pcagent->emitted)
3038 emit_value (logbuffer, MONO_COUNTER_PERFCOUNTERS);
3039 emit_string (logbuffer, pcagent->category_name, strlen (pcagent->category_name) + 1);
3040 emit_string (logbuffer, pcagent->name, strlen (pcagent->name) + 1);
3041 emit_byte (logbuffer, MONO_COUNTER_LONG);
3042 emit_byte (logbuffer, MONO_COUNTER_RAW);
3043 emit_byte (logbuffer, MONO_COUNTER_VARIABLE);
3044 emit_value (logbuffer, pcagent->index);
3046 pcagent->emitted = 1;
3049 EXIT_LOG_EXPLICIT (DO_SEND);
3053 perfcounters_foreach (char *category_name, char *name, unsigned char type, gint64 value, gpointer user_data)
3055 PerfCounterAgent *pcagent;
3057 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3058 if (strcmp (pcagent->category_name, category_name) != 0 || strcmp (pcagent->name, name) != 0)
3060 if (pcagent->value == value)
3063 pcagent->value = value;
3064 pcagent->updated = 1;
3065 pcagent->deleted = 0;
3069 pcagent = g_new0 (PerfCounterAgent, 1);
3070 pcagent->next = perfcounters;
3071 pcagent->index = counters_index++;
3072 pcagent->category_name = g_strdup (category_name);
3073 pcagent->name = g_strdup (name);
3074 pcagent->type = (int) type;
3075 pcagent->value = value;
3076 pcagent->emitted = 0;
3077 pcagent->updated = 1;
3078 pcagent->deleted = 0;
3080 perfcounters = pcagent;
3086 perfcounters_sample (MonoProfiler *profiler, uint64_t timestamp)
3088 PerfCounterAgent *pcagent;
3092 mono_os_mutex_lock (&counters_mutex);
3094 /* mark all perfcounters as deleted, foreach will unmark them as necessary */
3095 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next)
3096 pcagent->deleted = 1;
3098 mono_perfcounter_foreach (perfcounters_foreach, perfcounters);
3100 perfcounters_emit (profiler);
3103 EVENT_SIZE /* event */
3106 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3107 if (pcagent->deleted || !pcagent->updated)
3111 LEB128_SIZE /* index */ +
3112 BYTE_SIZE /* type */ +
3113 LEB128_SIZE /* value */
3123 LEB128_SIZE /* stop marker */
3126 ENTER_LOG (&perfcounter_samples_ctr, logbuffer, size);
3128 emit_event_time (logbuffer, TYPE_SAMPLE_COUNTERS | TYPE_SAMPLE, timestamp);
3130 for (pcagent = perfcounters; pcagent; pcagent = pcagent->next) {
3131 if (pcagent->deleted || !pcagent->updated)
3133 emit_uvalue (logbuffer, pcagent->index);
3134 emit_byte (logbuffer, MONO_COUNTER_LONG);
3135 emit_svalue (logbuffer, pcagent->value);
3137 pcagent->updated = 0;
3140 emit_value (logbuffer, 0);
3142 EXIT_LOG_EXPLICIT (DO_SEND);
3145 mono_os_mutex_unlock (&counters_mutex);
3149 counters_and_perfcounters_sample (MonoProfiler *prof)
3151 uint64_t now = current_time ();
3153 counters_sample (prof, now);
3154 perfcounters_sample (prof, now);
3157 #define COVERAGE_DEBUG(x) if (debug_coverage) {x}
3158 static mono_mutex_t coverage_mutex;
3159 static MonoConcurrentHashTable *coverage_methods = NULL;
3160 static MonoConcurrentHashTable *coverage_assemblies = NULL;
3161 static MonoConcurrentHashTable *coverage_classes = NULL;
3163 static MonoConcurrentHashTable *filtered_classes = NULL;
3164 static MonoConcurrentHashTable *entered_methods = NULL;
3165 static MonoConcurrentHashTable *image_to_methods = NULL;
3166 static MonoConcurrentHashTable *suppressed_assemblies = NULL;
3167 static gboolean coverage_initialized = FALSE;
3169 static GPtrArray *coverage_data = NULL;
3170 static int previous_offset = 0;
3173 MonoLockFreeQueueNode node;
3186 free_coverage_entry (gpointer data, gpointer userdata)
3188 CoverageEntry *entry = (CoverageEntry *)data;
3189 g_free (entry->filename);
3194 obtain_coverage_for_method (MonoProfiler *prof, const MonoProfileCoverageEntry *entry)
3196 int offset = entry->iloffset - previous_offset;
3197 CoverageEntry *e = g_new (CoverageEntry, 1);
3199 previous_offset = entry->iloffset;
3202 e->counter = entry->counter;
3203 e->filename = g_strdup(entry->filename ? entry->filename : "");
3204 e->line = entry->line;
3205 e->column = entry->col;
3207 g_ptr_array_add (coverage_data, e);
3211 parse_generic_type_names(char *name)
3213 char *new_name, *ret;
3214 int within_generic_declaration = 0, generic_members = 1;
3216 if (name == NULL || *name == '\0')
3217 return g_strdup ("");
3219 if (!(ret = new_name = (char *) g_calloc (strlen (name) * 4 + 1, sizeof (char))))
3225 within_generic_declaration = 1;
3229 within_generic_declaration = 0;
3231 if (*(name - 1) != '<') {
3233 *new_name++ = '0' + generic_members;
3235 memcpy (new_name, "<>", 8);
3239 generic_members = 0;
3247 if (!within_generic_declaration)
3248 *new_name++ = *name;
3257 static int method_id;
3259 build_method_buffer (gpointer key, gpointer value, gpointer userdata)
3261 MonoMethod *method = (MonoMethod *)value;
3262 MonoProfiler *prof = (MonoProfiler *)userdata;
3266 const char *image_name, *method_name, *sig, *first_filename;
3269 previous_offset = 0;
3270 coverage_data = g_ptr_array_new ();
3272 mono_profiler_coverage_get (prof, method, obtain_coverage_for_method);
3274 klass = mono_method_get_class (method);
3275 image = mono_class_get_image (klass);
3276 image_name = mono_image_get_name (image);
3278 sig = mono_signature_get_desc (mono_method_signature (method), TRUE);
3279 class_name = parse_generic_type_names (mono_type_get_name (mono_class_get_type (klass)));
3280 method_name = mono_method_get_name (method);
3282 if (coverage_data->len != 0) {
3283 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[0];
3284 first_filename = entry->filename ? entry->filename : "";
3286 first_filename = "";
3288 image_name = image_name ? image_name : "";
3289 sig = sig ? sig : "";
3290 method_name = method_name ? method_name : "";
3292 ENTER_LOG (&coverage_methods_ctr, logbuffer,
3293 EVENT_SIZE /* event */ +
3294 strlen (image_name) + 1 /* image name */ +
3295 strlen (class_name) + 1 /* class name */ +
3296 strlen (method_name) + 1 /* method name */ +
3297 strlen (sig) + 1 /* signature */ +
3298 strlen (first_filename) + 1 /* first file name */ +
3299 LEB128_SIZE /* token */ +
3300 LEB128_SIZE /* method id */ +
3301 LEB128_SIZE /* entries */
3304 emit_event (logbuffer, TYPE_COVERAGE_METHOD | TYPE_COVERAGE);
3305 emit_string (logbuffer, image_name, strlen (image_name) + 1);
3306 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3307 emit_string (logbuffer, method_name, strlen (method_name) + 1);
3308 emit_string (logbuffer, sig, strlen (sig) + 1);
3309 emit_string (logbuffer, first_filename, strlen (first_filename) + 1);
3311 emit_uvalue (logbuffer, mono_method_get_token (method));
3312 emit_uvalue (logbuffer, method_id);
3313 emit_value (logbuffer, coverage_data->len);
3315 EXIT_LOG_EXPLICIT (DO_SEND);
3317 for (i = 0; i < coverage_data->len; i++) {
3318 CoverageEntry *entry = (CoverageEntry *)coverage_data->pdata[i];
3320 ENTER_LOG (&coverage_statements_ctr, logbuffer,
3321 EVENT_SIZE /* event */ +
3322 LEB128_SIZE /* method id */ +
3323 LEB128_SIZE /* offset */ +
3324 LEB128_SIZE /* counter */ +
3325 LEB128_SIZE /* line */ +
3326 LEB128_SIZE /* column */
3329 emit_event (logbuffer, TYPE_COVERAGE_STATEMENT | TYPE_COVERAGE);
3330 emit_uvalue (logbuffer, method_id);
3331 emit_uvalue (logbuffer, entry->offset);
3332 emit_uvalue (logbuffer, entry->counter);
3333 emit_uvalue (logbuffer, entry->line);
3334 emit_uvalue (logbuffer, entry->column);
3336 EXIT_LOG_EXPLICIT (DO_SEND);
3341 g_free (class_name);
3343 g_ptr_array_foreach (coverage_data, free_coverage_entry, NULL);
3344 g_ptr_array_free (coverage_data, TRUE);
3345 coverage_data = NULL;
3348 /* This empties the queue */
3350 count_queue (MonoLockFreeQueue *queue)
3352 MonoLockFreeQueueNode *node;
3355 while ((node = mono_lock_free_queue_dequeue (queue))) {
3357 mono_thread_hazardous_try_free (node, g_free);
3364 build_class_buffer (gpointer key, gpointer value, gpointer userdata)
3366 MonoClass *klass = (MonoClass *)key;
3367 MonoLockFreeQueue *class_methods = (MonoLockFreeQueue *)value;
3370 const char *assembly_name;
3371 int number_of_methods, partially_covered;
3372 guint fully_covered;
3374 image = mono_class_get_image (klass);
3375 assembly_name = mono_image_get_name (image);
3376 class_name = mono_type_get_name (mono_class_get_type (klass));
3378 assembly_name = assembly_name ? assembly_name : "";
3379 number_of_methods = mono_class_num_methods (klass);
3380 fully_covered = count_queue (class_methods);
3381 /* We don't handle partial covered yet */
3382 partially_covered = 0;
3384 ENTER_LOG (&coverage_classes_ctr, logbuffer,
3385 EVENT_SIZE /* event */ +
3386 strlen (assembly_name) + 1 /* assembly name */ +
3387 strlen (class_name) + 1 /* class name */ +
3388 LEB128_SIZE /* no. methods */ +
3389 LEB128_SIZE /* fully covered */ +
3390 LEB128_SIZE /* partially covered */
3393 emit_event (logbuffer, TYPE_COVERAGE_CLASS | TYPE_COVERAGE);
3394 emit_string (logbuffer, assembly_name, strlen (assembly_name) + 1);
3395 emit_string (logbuffer, class_name, strlen (class_name) + 1);
3396 emit_uvalue (logbuffer, number_of_methods);
3397 emit_uvalue (logbuffer, fully_covered);
3398 emit_uvalue (logbuffer, partially_covered);
3400 EXIT_LOG_EXPLICIT (DO_SEND);
3402 g_free (class_name);
3406 get_coverage_for_image (MonoImage *image, int *number_of_methods, guint *fully_covered, int *partially_covered)
3408 MonoLockFreeQueue *image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3410 *number_of_methods = mono_image_get_table_rows (image, MONO_TABLE_METHOD);
3412 *fully_covered = count_queue (image_methods);
3416 // FIXME: We don't handle partially covered yet.
3417 *partially_covered = 0;
3421 build_assembly_buffer (gpointer key, gpointer value, gpointer userdata)
3423 MonoAssembly *assembly = (MonoAssembly *)value;
3424 MonoImage *image = mono_assembly_get_image (assembly);
3425 const char *name, *guid, *filename;
3426 int number_of_methods = 0, partially_covered = 0;
3427 guint fully_covered = 0;
3429 name = mono_image_get_name (image);
3430 guid = mono_image_get_guid (image);
3431 filename = mono_image_get_filename (image);
3433 name = name ? name : "";
3434 guid = guid ? guid : "";
3435 filename = filename ? filename : "";
3437 get_coverage_for_image (image, &number_of_methods, &fully_covered, &partially_covered);
3439 ENTER_LOG (&coverage_assemblies_ctr, logbuffer,
3440 EVENT_SIZE /* event */ +
3441 strlen (name) + 1 /* name */ +
3442 strlen (guid) + 1 /* guid */ +
3443 strlen (filename) + 1 /* file name */ +
3444 LEB128_SIZE /* no. methods */ +
3445 LEB128_SIZE /* fully covered */ +
3446 LEB128_SIZE /* partially covered */
3449 emit_event (logbuffer, TYPE_COVERAGE_ASSEMBLY | TYPE_COVERAGE);
3450 emit_string (logbuffer, name, strlen (name) + 1);
3451 emit_string (logbuffer, guid, strlen (guid) + 1);
3452 emit_string (logbuffer, filename, strlen (filename) + 1);
3453 emit_uvalue (logbuffer, number_of_methods);
3454 emit_uvalue (logbuffer, fully_covered);
3455 emit_uvalue (logbuffer, partially_covered);
3457 EXIT_LOG_EXPLICIT (DO_SEND);
3461 dump_coverage (MonoProfiler *prof)
3463 if (!coverage_initialized)
3466 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Started dump\n");)
3469 mono_os_mutex_lock (&coverage_mutex);
3470 mono_conc_hashtable_foreach (coverage_assemblies, build_assembly_buffer, NULL);
3471 mono_conc_hashtable_foreach (coverage_classes, build_class_buffer, NULL);
3472 mono_conc_hashtable_foreach (coverage_methods, build_method_buffer, prof);
3473 mono_os_mutex_unlock (&coverage_mutex);
3475 COVERAGE_DEBUG(fprintf (stderr, "Coverage: Finished dump\n");)
3479 process_method_enter_coverage (MonoProfiler *prof, MonoMethod *method)
3484 if (!coverage_initialized)
3487 klass = mono_method_get_class (method);
3488 image = mono_class_get_image (klass);
3490 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)))
3493 mono_os_mutex_lock (&coverage_mutex);
3494 mono_conc_hashtable_insert (entered_methods, method, method);
3495 mono_os_mutex_unlock (&coverage_mutex);
3498 static MonoLockFreeQueueNode *
3499 create_method_node (MonoMethod *method)
3501 MethodNode *node = (MethodNode *) g_malloc (sizeof (MethodNode));
3502 mono_lock_free_queue_node_init ((MonoLockFreeQueueNode *) node, FALSE);
3503 node->method = method;
3505 return (MonoLockFreeQueueNode *) node;
3509 coverage_filter (MonoProfiler *prof, MonoMethod *method)
3514 MonoAssembly *assembly;
3515 MonoMethodHeader *header;
3516 guint32 iflags, flags, code_size;
3517 char *fqn, *classname;
3518 gboolean has_positive, found;
3519 MonoLockFreeQueue *image_methods, *class_methods;
3520 MonoLockFreeQueueNode *node;
3522 g_assert (coverage_initialized && "Why are we being asked for coverage filter info when we're not doing coverage?");
3524 COVERAGE_DEBUG(fprintf (stderr, "Coverage filter for %s\n", mono_method_get_name (method));)
3526 flags = mono_method_get_flags (method, &iflags);
3527 if ((iflags & 0x1000 /*METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL*/) ||
3528 (flags & 0x2000 /*METHOD_ATTRIBUTE_PINVOKE_IMPL*/)) {
3529 COVERAGE_DEBUG(fprintf (stderr, " Internal call or pinvoke - ignoring\n");)
3533 // Don't need to do anything else if we're already tracking this method
3534 if (mono_conc_hashtable_lookup (coverage_methods, method)) {
3535 COVERAGE_DEBUG(fprintf (stderr, " Already tracking\n");)
3539 klass = mono_method_get_class (method);
3540 image = mono_class_get_image (klass);
3542 // Don't handle coverage for the core assemblies
3543 if (mono_conc_hashtable_lookup (suppressed_assemblies, (gpointer) mono_image_get_name (image)) != NULL)
3546 if (prof->coverage_filters) {
3547 /* Check already filtered classes first */
3548 if (mono_conc_hashtable_lookup (filtered_classes, klass)) {
3549 COVERAGE_DEBUG(fprintf (stderr, " Already filtered\n");)
3553 classname = mono_type_get_name (mono_class_get_type (klass));
3555 fqn = g_strdup_printf ("[%s]%s", mono_image_get_name (image), classname);
3557 COVERAGE_DEBUG(fprintf (stderr, " Looking for %s in filter\n", fqn);)
3558 // Check positive filters first
3559 has_positive = FALSE;
3561 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3562 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3564 if (filter [0] == '+') {
3565 filter = &filter [1];
3567 COVERAGE_DEBUG(fprintf (stderr, " Checking against +%s ...", filter);)
3569 if (strstr (fqn, filter) != NULL) {
3570 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3573 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3575 has_positive = TRUE;
3579 if (has_positive && !found) {
3580 COVERAGE_DEBUG(fprintf (stderr, " Positive match was not found\n");)
3582 mono_os_mutex_lock (&coverage_mutex);
3583 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3584 mono_os_mutex_unlock (&coverage_mutex);
3591 for (guint i = 0; i < prof->coverage_filters->len; ++i) {
3592 // FIXME: Is substring search sufficient?
3593 char *filter = (char *)g_ptr_array_index (prof->coverage_filters, i);
3594 if (filter [0] == '+')
3598 filter = &filter [1];
3599 COVERAGE_DEBUG(fprintf (stderr, " Checking against -%s ...", filter);)
3601 if (strstr (fqn, filter) != NULL) {
3602 COVERAGE_DEBUG(fprintf (stderr, "matched\n");)
3604 mono_os_mutex_lock (&coverage_mutex);
3605 mono_conc_hashtable_insert (filtered_classes, klass, klass);
3606 mono_os_mutex_unlock (&coverage_mutex);
3612 COVERAGE_DEBUG(fprintf (stderr, "no match\n");)
3620 COVERAGE_DEBUG(fprintf (stderr, " Handling coverage for %s\n", mono_method_get_name (method));)
3621 header = mono_method_get_header_checked (method, &error);
3622 mono_error_cleanup (&error);
3624 mono_method_header_get_code (header, &code_size, NULL);
3626 assembly = mono_image_get_assembly (image);
3628 // Need to keep the assemblies around for as long as they are kept in the hashtable
3629 // Nunit, for example, has a habit of unloading them before the coverage statistics are
3630 // generated causing a crash. See https://bugzilla.xamarin.com/show_bug.cgi?id=39325
3631 mono_assembly_addref (assembly);
3633 mono_os_mutex_lock (&coverage_mutex);
3634 mono_conc_hashtable_insert (coverage_methods, method, method);
3635 mono_conc_hashtable_insert (coverage_assemblies, assembly, assembly);
3636 mono_os_mutex_unlock (&coverage_mutex);
3638 image_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (image_to_methods, image);
3640 if (image_methods == NULL) {
3641 image_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3642 mono_lock_free_queue_init (image_methods);
3643 mono_os_mutex_lock (&coverage_mutex);
3644 mono_conc_hashtable_insert (image_to_methods, image, image_methods);
3645 mono_os_mutex_unlock (&coverage_mutex);
3648 node = create_method_node (method);
3649 mono_lock_free_queue_enqueue (image_methods, node);
3651 class_methods = (MonoLockFreeQueue *)mono_conc_hashtable_lookup (coverage_classes, klass);
3653 if (class_methods == NULL) {
3654 class_methods = (MonoLockFreeQueue *) g_malloc (sizeof (MonoLockFreeQueue));
3655 mono_lock_free_queue_init (class_methods);
3656 mono_os_mutex_lock (&coverage_mutex);
3657 mono_conc_hashtable_insert (coverage_classes, klass, class_methods);
3658 mono_os_mutex_unlock (&coverage_mutex);
3661 node = create_method_node (method);
3662 mono_lock_free_queue_enqueue (class_methods, node);
3667 #define LINE_BUFFER_SIZE 4096
3668 /* Max file limit of 128KB */
3669 #define MAX_FILE_SIZE 128 * 1024
3671 get_file_content (FILE *stream)
3676 int res, offset = 0;
3678 res = fseek (stream, 0, SEEK_END);
3682 filesize = ftell (stream);
3686 res = fseek (stream, 0, SEEK_SET);
3690 if (filesize > MAX_FILE_SIZE)
3693 buffer = (char *) g_malloc ((filesize + 1) * sizeof (char));
3694 while ((bytes_read = fread (buffer + offset, 1, LINE_BUFFER_SIZE, stream)) > 0)
3695 offset += bytes_read;
3697 /* NULL terminate our buffer */
3698 buffer[filesize] = '\0';
3703 get_next_line (char *contents, char **next_start)
3707 if (p == NULL || *p == '\0') {
3712 while (*p != '\n' && *p != '\0')
3717 *next_start = p + 1;
3725 init_suppressed_assemblies (void)
3731 suppressed_assemblies = mono_conc_hashtable_new (g_str_hash, g_str_equal);
3732 sa_file = fopen (SUPPRESSION_DIR "/mono-profiler-log.suppression", "r");
3733 if (sa_file == NULL)
3736 /* Don't need to free @content as it is referred to by the lines stored in @suppressed_assemblies */
3737 content = get_file_content (sa_file);
3738 if (content == NULL) {
3739 g_error ("mono-profiler-log.suppression is greater than 128kb - aborting\n");
3742 while ((line = get_next_line (content, &content))) {
3743 line = g_strchomp (g_strchug (line));
3744 /* No locking needed as we're doing initialization */
3745 mono_conc_hashtable_insert (suppressed_assemblies, line, line);
3752 parse_cov_filter_file (GPtrArray *filters, const char *file)
3755 char *line, *content;
3757 filter_file = fopen (file, "r");
3758 if (filter_file == NULL) {
3759 fprintf (stderr, "Unable to open %s\n", file);
3763 /* Don't need to free content as it is referred to by the lines stored in @filters */
3764 content = get_file_content (filter_file);
3765 if (content == NULL)
3766 fprintf (stderr, "WARNING: %s is greater than 128kb - ignoring\n", file);
3768 while ((line = get_next_line (content, &content)))
3769 g_ptr_array_add (filters, g_strchug (g_strchomp (line)));
3771 fclose (filter_file);
3775 coverage_init (MonoProfiler *prof)
3777 g_assert (!coverage_initialized && "Why are we initializing coverage twice?");
3779 COVERAGE_DEBUG(fprintf (stderr, "Coverage initialized\n");)
3781 mono_os_mutex_init (&coverage_mutex);
3782 coverage_methods = mono_conc_hashtable_new (NULL, NULL);
3783 coverage_assemblies = mono_conc_hashtable_new (NULL, NULL);
3784 coverage_classes = mono_conc_hashtable_new (NULL, NULL);
3785 filtered_classes = mono_conc_hashtable_new (NULL, NULL);
3786 entered_methods = mono_conc_hashtable_new (NULL, NULL);
3787 image_to_methods = mono_conc_hashtable_new (NULL, NULL);
3788 init_suppressed_assemblies ();
3790 coverage_initialized = TRUE;
3794 unref_coverage_assemblies (gpointer key, gpointer value, gpointer userdata)
3796 MonoAssembly *assembly = (MonoAssembly *)value;
3797 mono_assembly_close (assembly);
3801 free_sample_hit (gpointer p)
3803 mono_lock_free_free (p, SAMPLE_BLOCK_SIZE);
3807 cleanup_reusable_samples (MonoProfiler *prof)
3811 while ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->sample_reuse_queue)))
3812 mono_thread_hazardous_try_free (sample, free_sample_hit);
3816 log_shutdown (MonoProfiler *prof)
3818 InterlockedWrite (&in_shutdown, 1);
3821 counters_and_perfcounters_sample (prof);
3823 dump_coverage (prof);
3827 if (write (prof->pipes [1], &c, 1) != 1) {
3828 fprintf (stderr, "Could not write to pipe: %s\n", strerror (errno));
3832 mono_native_thread_join (prof->helper_thread);
3834 mono_os_mutex_destroy (&counters_mutex);
3836 MonoCounterAgent *mc_next;
3838 for (MonoCounterAgent *cur = counters; cur; cur = mc_next) {
3839 mc_next = cur->next;
3843 PerfCounterAgent *pc_next;
3845 for (PerfCounterAgent *cur = perfcounters; cur; cur = pc_next) {
3846 pc_next = cur->next;
3851 * Ensure that we empty the LLS completely, even if some nodes are
3852 * not immediately removed upon calling mono_lls_remove (), by
3853 * iterating until the head is NULL.
3855 while (profiler_thread_list.head) {
3856 MONO_LLS_FOREACH_SAFE (&profiler_thread_list, MonoProfilerThread, thread) {
3857 g_assert (thread->attached && "Why is a thread in the LLS not attached?");
3859 remove_thread (thread);
3860 } MONO_LLS_FOREACH_SAFE_END
3864 * Ensure that all threads have been freed, so that we don't miss any
3865 * buffers when we shut down the writer thread below.
3867 mono_thread_hazardous_try_free_all ();
3869 InterlockedWrite (&prof->run_dumper_thread, 0);
3870 mono_os_sem_post (&prof->dumper_queue_sem);
3871 mono_native_thread_join (prof->dumper_thread);
3872 mono_os_sem_destroy (&prof->dumper_queue_sem);
3874 InterlockedWrite (&prof->run_writer_thread, 0);
3875 mono_os_sem_post (&prof->writer_queue_sem);
3876 mono_native_thread_join (prof->writer_thread);
3877 mono_os_sem_destroy (&prof->writer_queue_sem);
3880 * Free all writer queue entries, and ensure that all sample hits will be
3881 * added to the sample reuse queue.
3883 mono_thread_hazardous_try_free_all ();
3885 cleanup_reusable_samples (prof);
3888 * Finally, make sure that all sample hits are freed. This should cover all
3889 * hazardous data from the profiler. We can now be sure that the runtime
3890 * won't later invoke free functions in the profiler library after it has
3893 mono_thread_hazardous_try_free_all ();
3895 g_assert (!InterlockedRead (&buffer_rwlock_count) && "Why is the reader count still non-zero?");
3896 g_assert (!InterlockedReadPointer (&buffer_rwlock_exclusive) && "Why does someone still hold the exclusive lock?");
3898 #if defined (HAVE_SYS_ZLIB)
3900 gzclose (prof->gzfile);
3902 if (prof->pipe_output)
3903 pclose (prof->file);
3905 fclose (prof->file);
3907 mono_conc_hashtable_destroy (prof->method_table);
3908 mono_os_mutex_destroy (&prof->method_table_mutex);
3910 if (coverage_initialized) {
3911 mono_os_mutex_lock (&coverage_mutex);
3912 mono_conc_hashtable_foreach (coverage_assemblies, unref_coverage_assemblies, prof);
3913 mono_os_mutex_unlock (&coverage_mutex);
3915 mono_conc_hashtable_destroy (coverage_methods);
3916 mono_conc_hashtable_destroy (coverage_assemblies);
3917 mono_conc_hashtable_destroy (coverage_classes);
3918 mono_conc_hashtable_destroy (filtered_classes);
3920 mono_conc_hashtable_destroy (entered_methods);
3921 mono_conc_hashtable_destroy (image_to_methods);
3922 mono_conc_hashtable_destroy (suppressed_assemblies);
3923 mono_os_mutex_destroy (&coverage_mutex);
3928 g_free (prof->args);
3933 new_filename (const char* filename)
3935 time_t t = time (NULL);
3936 int pid = process_id ();
3941 int count_dates = 0;
3945 for (p = filename; *p; p++) {
3956 if (!count_dates && !count_pids)
3957 return pstrdup (filename);
3958 snprintf (pid_buf, sizeof (pid_buf), "%d", pid);
3960 snprintf (time_buf, sizeof (time_buf), "%d%02d%02d%02d%02d%02d",
3961 1900 + ts->tm_year, 1 + ts->tm_mon, ts->tm_mday, ts->tm_hour, ts->tm_min, ts->tm_sec);
3962 s_date = strlen (time_buf);
3963 s_pid = strlen (pid_buf);
3964 d = res = (char *) g_malloc (strlen (filename) + s_date * count_dates + s_pid * count_pids);
3965 for (p = filename; *p; p++) {
3972 strcpy (d, time_buf);
3975 } else if (*p == 'p') {
3976 strcpy (d, pid_buf);
3979 } else if (*p == '%') {
3992 add_to_fd_set (fd_set *set, int fd, int *max_fd)
3995 * This should only trigger for the basic FDs (server socket, pipes) at
3996 * startup if for some mysterious reason they're too large. In this case,
3997 * the profiler really can't function, and we're better off printing an
3998 * error and exiting.
4000 if (fd >= FD_SETSIZE) {
4001 fprintf (stderr, "File descriptor is out of bounds for fd_set: %d\n", fd);
4012 helper_thread (void *arg)
4014 MonoProfiler *prof = (MonoProfiler *) arg;
4016 mono_threads_attach_tools_thread ();
4017 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler helper");
4019 MonoProfilerThread *thread = init_thread (prof, FALSE);
4021 GArray *command_sockets = g_array_new (FALSE, FALSE, sizeof (int));
4029 add_to_fd_set (&rfds, prof->server_socket, &max_fd);
4030 add_to_fd_set (&rfds, prof->pipes [0], &max_fd);
4032 for (gint i = 0; i < command_sockets->len; i++)
4033 add_to_fd_set (&rfds, g_array_index (command_sockets, int, i), &max_fd);
4035 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
4037 // Sleep for 1sec or until a file descriptor has data.
4038 if (select (max_fd + 1, &rfds, NULL, NULL, &tv) == -1) {
4042 fprintf (stderr, "Error in mono-profiler-log server: %s", strerror (errno));
4047 counters_and_perfcounters_sample (prof);
4049 buffer_lock_excl ();
4051 sync_point (SYNC_POINT_PERIODIC);
4053 buffer_unlock_excl ();
4055 // Are we shutting down?
4056 if (FD_ISSET (prof->pipes [0], &rfds)) {
4058 read (prof->pipes [0], &c, 1);
4062 for (gint i = 0; i < command_sockets->len; i++) {
4063 int fd = g_array_index (command_sockets, int, i);
4065 if (!FD_ISSET (fd, &rfds))
4069 int len = read (fd, buf, sizeof (buf) - 1);
4075 // The other end disconnected.
4076 g_array_remove_index (command_sockets, i);
4084 if (!strcmp (buf, "heapshot\n") && hs_mode_ondemand) {
4085 // Rely on the finalization callback triggering a GC.
4086 heapshot_requested = 1;
4087 mono_gc_finalize_notify ();
4091 if (FD_ISSET (prof->server_socket, &rfds)) {
4092 int fd = accept (prof->server_socket, NULL, NULL);
4095 if (fd >= FD_SETSIZE)
4098 g_array_append_val (command_sockets, fd);
4103 for (gint i = 0; i < command_sockets->len; i++)
4104 close (g_array_index (command_sockets, int, i));
4106 g_array_free (command_sockets, TRUE);
4108 send_log_unsafe (FALSE);
4109 deinit_thread (thread);
4111 mono_thread_info_detach ();
4117 start_helper_thread (MonoProfiler* prof)
4119 if (pipe (prof->pipes) == -1) {
4120 fprintf (stderr, "Cannot create pipe: %s\n", strerror (errno));
4124 prof->server_socket = socket (PF_INET, SOCK_STREAM, 0);
4126 if (prof->server_socket == -1) {
4127 fprintf (stderr, "Cannot create server socket: %s\n", strerror (errno));
4131 struct sockaddr_in server_address;
4133 memset (&server_address, 0, sizeof (server_address));
4134 server_address.sin_family = AF_INET;
4135 server_address.sin_addr.s_addr = INADDR_ANY;
4136 server_address.sin_port = htons (prof->command_port);
4138 if (bind (prof->server_socket, (struct sockaddr *) &server_address, sizeof (server_address)) == -1) {
4139 fprintf (stderr, "Cannot bind server socket on port %d: %s\n", prof->command_port, strerror (errno));
4140 close (prof->server_socket);
4144 if (listen (prof->server_socket, 1) == -1) {
4145 fprintf (stderr, "Cannot listen on server socket: %s\n", strerror (errno));
4146 close (prof->server_socket);
4150 socklen_t slen = sizeof (server_address);
4152 if (getsockname (prof->server_socket, (struct sockaddr *) &server_address, &slen)) {
4153 fprintf (stderr, "Could not get assigned port: %s\n", strerror (errno));
4154 close (prof->server_socket);
4158 prof->command_port = ntohs (server_address.sin_port);
4160 if (!mono_native_thread_create (&prof->helper_thread, helper_thread, prof)) {
4161 fprintf (stderr, "Could not start helper thread\n");
4162 close (prof->server_socket);
4168 free_writer_entry (gpointer p)
4170 mono_lock_free_free (p, WRITER_ENTRY_BLOCK_SIZE);
4174 handle_writer_queue_entry (MonoProfiler *prof)
4176 WriterQueueEntry *entry;
4178 if ((entry = (WriterQueueEntry *) mono_lock_free_queue_dequeue (&prof->writer_queue))) {
4179 if (!entry->methods)
4182 gboolean wrote_methods = FALSE;
4185 * Encode the method events in a temporary log buffer that we
4186 * flush to disk before the main buffer, ensuring that all
4187 * methods have metadata emitted before they're referenced.
4189 * We use a 'proper' thread-local buffer for this as opposed
4190 * to allocating and freeing a buffer by hand because the call
4191 * to mono_method_full_name () below may trigger class load
4192 * events when it retrieves the signature of the method. So a
4193 * thread-local buffer needs to exist when such events occur.
4195 for (guint i = 0; i < entry->methods->len; i++) {
4196 MethodInfo *info = (MethodInfo *) g_ptr_array_index (entry->methods, i);
4198 if (mono_conc_hashtable_lookup (prof->method_table, info->method))
4199 goto free_info; // This method already has metadata emitted.
4202 * Other threads use this hash table to get a general
4203 * idea of whether a method has already been emitted to
4204 * the stream. Due to the way we add to this table, it
4205 * can easily happen that multiple threads queue up the
4206 * same methods, but that's OK since eventually all
4207 * methods will be in this table and the thread-local
4208 * method lists will just be empty for the rest of the
4211 mono_os_mutex_lock (&prof->method_table_mutex);
4212 mono_conc_hashtable_insert (prof->method_table, info->method, info->method);
4213 mono_os_mutex_unlock (&prof->method_table_mutex);
4215 char *name = mono_method_full_name (info->method, 1);
4216 int nlen = strlen (name) + 1;
4217 void *cstart = info->ji ? mono_jit_info_get_code_start (info->ji) : NULL;
4218 int csize = info->ji ? mono_jit_info_get_code_size (info->ji) : 0;
4220 ENTER_LOG (&method_jits_ctr, logbuffer,
4221 EVENT_SIZE /* event */ +
4222 LEB128_SIZE /* method */ +
4223 LEB128_SIZE /* start */ +
4224 LEB128_SIZE /* size */ +
4228 emit_event_time (logbuffer, TYPE_JIT | TYPE_METHOD, info->time);
4229 emit_method_inner (logbuffer, info->method);
4230 emit_ptr (logbuffer, cstart);
4231 emit_value (logbuffer, csize);
4233 memcpy (logbuffer->cursor, name, nlen);
4234 logbuffer->cursor += nlen;
4236 EXIT_LOG_EXPLICIT (NO_SEND);
4240 wrote_methods = TRUE;
4246 g_ptr_array_free (entry->methods, TRUE);
4248 if (wrote_methods) {
4249 dump_buffer_threadless (prof, PROF_TLS_GET ()->buffer);
4250 init_buffer_state (PROF_TLS_GET ());
4254 dump_buffer (prof, entry->buffer);
4256 mono_thread_hazardous_try_free (entry, free_writer_entry);
4265 writer_thread (void *arg)
4267 MonoProfiler *prof = (MonoProfiler *)arg;
4269 mono_threads_attach_tools_thread ();
4270 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler writer");
4274 MonoProfilerThread *thread = init_thread (prof, FALSE);
4276 while (InterlockedRead (&prof->run_writer_thread)) {
4277 mono_os_sem_wait (&prof->writer_queue_sem, MONO_SEM_FLAGS_NONE);
4278 handle_writer_queue_entry (prof);
4281 /* Drain any remaining entries on shutdown. */
4282 while (handle_writer_queue_entry (prof));
4284 free_buffer (thread->buffer, thread->buffer->size);
4285 deinit_thread (thread);
4287 mono_thread_info_detach ();
4293 start_writer_thread (MonoProfiler* prof)
4295 InterlockedWrite (&prof->run_writer_thread, 1);
4297 if (!mono_native_thread_create (&prof->writer_thread, writer_thread, prof)) {
4298 fprintf (stderr, "Could not start writer thread\n");
4304 reuse_sample_hit (gpointer p)
4306 SampleHit *sample = p;
4308 mono_lock_free_queue_node_unpoison (&sample->node);
4309 mono_lock_free_queue_enqueue (&sample->prof->sample_reuse_queue, &sample->node);
4313 handle_dumper_queue_entry (MonoProfiler *prof)
4317 if ((sample = (SampleHit *) mono_lock_free_queue_dequeue (&prof->dumper_queue))) {
4318 for (int i = 0; i < sample->count; ++i) {
4319 MonoMethod *method = sample->frames [i].method;
4320 MonoDomain *domain = sample->frames [i].domain;
4321 void *address = sample->frames [i].base_address;
4324 g_assert (domain && "What happened to the domain pointer?");
4325 g_assert (address && "What happened to the instruction pointer?");
4327 MonoJitInfo *ji = mono_jit_info_table_find (domain, (char *) address);
4330 sample->frames [i].method = mono_jit_info_get_method (ji);
4334 ENTER_LOG (&sample_hits_ctr, logbuffer,
4335 EVENT_SIZE /* event */ +
4336 BYTE_SIZE /* type */ +
4337 LEB128_SIZE /* tid */ +
4338 LEB128_SIZE /* count */ +
4340 LEB128_SIZE /* ip */
4342 LEB128_SIZE /* managed count */ +
4344 LEB128_SIZE /* method */
4348 emit_event_time (logbuffer, TYPE_SAMPLE | TYPE_SAMPLE_HIT, sample->time);
4349 emit_byte (logbuffer, SAMPLE_CYCLES);
4350 emit_ptr (logbuffer, (void *) sample->tid);
4351 emit_value (logbuffer, 1);
4353 // TODO: Actual native unwinding.
4354 for (int i = 0; i < 1; ++i) {
4355 emit_ptr (logbuffer, sample->ip);
4356 add_code_pointer ((uintptr_t) sample->ip);
4359 /* new in data version 6 */
4360 emit_uvalue (logbuffer, sample->count);
4362 for (int i = 0; i < sample->count; ++i)
4363 emit_method (logbuffer, sample->frames [i].method);
4365 EXIT_LOG_EXPLICIT (DO_SEND);
4367 mono_thread_hazardous_try_free (sample, reuse_sample_hit);
4369 dump_unmanaged_coderefs (prof);
4376 dumper_thread (void *arg)
4378 MonoProfiler *prof = (MonoProfiler *)arg;
4380 mono_threads_attach_tools_thread ();
4381 mono_native_thread_set_name (mono_native_thread_id_get (), "Profiler dumper");
4383 MonoProfilerThread *thread = init_thread (prof, FALSE);
4385 while (InterlockedRead (&prof->run_dumper_thread)) {
4386 mono_os_sem_wait (&prof->dumper_queue_sem, MONO_SEM_FLAGS_NONE);
4387 handle_dumper_queue_entry (prof);
4390 /* Drain any remaining entries on shutdown. */
4391 while (handle_dumper_queue_entry (prof));
4393 send_log_unsafe (FALSE);
4394 deinit_thread (thread);
4396 mono_thread_info_detach ();
4402 start_dumper_thread (MonoProfiler* prof)
4404 InterlockedWrite (&prof->run_dumper_thread, 1);
4406 if (!mono_native_thread_create (&prof->dumper_thread, dumper_thread, prof)) {
4407 fprintf (stderr, "Could not start dumper thread\n");
4413 register_counter (const char *name, gint32 *counter)
4415 mono_counters_register (name, MONO_COUNTER_UINT | MONO_COUNTER_PROFILER | MONO_COUNTER_MONOTONIC, counter);
4419 runtime_initialized (MonoProfiler *profiler)
4421 InterlockedWrite (&runtime_inited, 1);
4423 register_counter ("Sample events allocated", &sample_allocations_ctr);
4424 register_counter ("Log buffers allocated", &buffer_allocations_ctr);
4426 register_counter ("Event: Sync points", &sync_points_ctr);
4427 register_counter ("Event: Heap objects", &heap_objects_ctr);
4428 register_counter ("Event: Heap starts", &heap_starts_ctr);
4429 register_counter ("Event: Heap ends", &heap_ends_ctr);
4430 register_counter ("Event: Heap roots", &heap_roots_ctr);
4431 register_counter ("Event: GC events", &gc_events_ctr);
4432 register_counter ("Event: GC resizes", &gc_resizes_ctr);
4433 register_counter ("Event: GC allocations", &gc_allocs_ctr);
4434 register_counter ("Event: GC moves", &gc_moves_ctr);
4435 register_counter ("Event: GC handle creations", &gc_handle_creations_ctr);
4436 register_counter ("Event: GC handle deletions", &gc_handle_deletions_ctr);
4437 register_counter ("Event: GC finalize starts", &finalize_begins_ctr);
4438 register_counter ("Event: GC finalize ends", &finalize_ends_ctr);
4439 register_counter ("Event: GC finalize object starts", &finalize_object_begins_ctr);
4440 register_counter ("Event: GC finalize object ends", &finalize_object_ends_ctr);
4441 register_counter ("Event: Image loads", &image_loads_ctr);
4442 register_counter ("Event: Image unloads", &image_unloads_ctr);
4443 register_counter ("Event: Assembly loads", &assembly_loads_ctr);
4444 register_counter ("Event: Assembly unloads", &assembly_unloads_ctr);
4445 register_counter ("Event: Class loads", &class_loads_ctr);
4446 register_counter ("Event: Class unloads", &class_unloads_ctr);
4447 register_counter ("Event: Method entries", &method_entries_ctr);
4448 register_counter ("Event: Method exits", &method_exits_ctr);
4449 register_counter ("Event: Method exception leaves", &method_exception_exits_ctr);
4450 register_counter ("Event: Method JITs", &method_jits_ctr);
4451 register_counter ("Event: Code buffers", &code_buffers_ctr);
4452 register_counter ("Event: Exception throws", &exception_throws_ctr);
4453 register_counter ("Event: Exception clauses", &exception_clauses_ctr);
4454 register_counter ("Event: Monitor events", &monitor_events_ctr);
4455 register_counter ("Event: Thread starts", &thread_starts_ctr);
4456 register_counter ("Event: Thread ends", &thread_ends_ctr);
4457 register_counter ("Event: Thread names", &thread_names_ctr);
4458 register_counter ("Event: Domain loads", &domain_loads_ctr);
4459 register_counter ("Event: Domain unloads", &domain_unloads_ctr);
4460 register_counter ("Event: Domain names", &domain_names_ctr);
4461 register_counter ("Event: Context loads", &context_loads_ctr);
4462 register_counter ("Event: Context unloads", &context_unloads_ctr);
4463 register_counter ("Event: Sample binaries", &sample_ubins_ctr);
4464 register_counter ("Event: Sample symbols", &sample_usyms_ctr);
4465 register_counter ("Event: Sample hits", &sample_hits_ctr);
4466 register_counter ("Event: Counter descriptors", &counter_descriptors_ctr);
4467 register_counter ("Event: Counter samples", &counter_samples_ctr);
4468 register_counter ("Event: Performance counter descriptors", &perfcounter_descriptors_ctr);
4469 register_counter ("Event: Performance counter samples", &perfcounter_samples_ctr);
4470 register_counter ("Event: Coverage methods", &coverage_methods_ctr);
4471 register_counter ("Event: Coverage statements", &coverage_statements_ctr);
4472 register_counter ("Event: Coverage classes", &coverage_classes_ctr);
4473 register_counter ("Event: Coverage assemblies", &coverage_assemblies_ctr);
4475 counters_init (profiler);
4478 * We must start the helper thread before the writer thread. This is
4479 * because the helper thread sets up the command port which is written to
4480 * the log header by the writer thread.
4482 start_helper_thread (profiler);
4483 start_writer_thread (profiler);
4484 start_dumper_thread (profiler);
4487 static MonoProfiler*
4488 create_profiler (const char *args, const char *filename, GPtrArray *filters)
4492 int force_delete = 0;
4493 prof = (MonoProfiler *) g_calloc (1, sizeof (MonoProfiler));
4495 prof->args = pstrdup (args);
4496 prof->command_port = command_port;
4497 if (filename && *filename == '-') {
4500 g_warning ("WARNING: the output:-FILENAME option is deprecated, the profiler now always overrides the output file\n");
4503 //If filename begin with +, append the pid at the end
4504 if (filename && *filename == '+')
4505 filename = g_strdup_printf ("%s.%d", filename + 1, getpid ());
4510 filename = "|mprof-report -";
4512 filename = "output.mlpd";
4513 nf = (char*)filename;
4515 nf = new_filename (filename);
4517 int s = strlen (nf) + 32;
4518 char *p = (char *) g_malloc (s);
4519 snprintf (p, s, "|mprof-report '--out=%s' -", nf);
4525 prof->file = popen (nf + 1, "w");
4526 prof->pipe_output = 1;
4527 } else if (*nf == '#') {
4528 int fd = strtol (nf + 1, NULL, 10);
4529 prof->file = fdopen (fd, "a");
4533 prof->file = fopen (nf, "wb");
4536 fprintf (stderr, "Cannot create profiler output: %s\n", nf);
4540 #if defined (HAVE_SYS_ZLIB)
4542 prof->gzfile = gzdopen (fileno (prof->file), "wb");
4546 * If you hit this assert while increasing MAX_FRAMES, you need to increase
4547 * SAMPLE_BLOCK_SIZE as well.
4549 g_assert (SAMPLE_SLOT_SIZE (MAX_FRAMES) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (SAMPLE_BLOCK_SIZE));
4551 // FIXME: We should free this stuff too.
4552 mono_lock_free_allocator_init_size_class (&prof->sample_size_class, SAMPLE_SLOT_SIZE (num_frames), SAMPLE_BLOCK_SIZE);
4553 mono_lock_free_allocator_init_allocator (&prof->sample_allocator, &prof->sample_size_class, MONO_MEM_ACCOUNT_PROFILER);
4555 mono_lock_free_queue_init (&prof->sample_reuse_queue);
4557 g_assert (sizeof (WriterQueueEntry) * 2 < LOCK_FREE_ALLOC_SB_USABLE_SIZE (WRITER_ENTRY_BLOCK_SIZE));
4559 // FIXME: We should free this stuff too.
4560 mono_lock_free_allocator_init_size_class (&prof->writer_entry_size_class, sizeof (WriterQueueEntry), WRITER_ENTRY_BLOCK_SIZE);
4561 mono_lock_free_allocator_init_allocator (&prof->writer_entry_allocator, &prof->writer_entry_size_class, MONO_MEM_ACCOUNT_PROFILER);
4563 mono_lock_free_queue_init (&prof->writer_queue);
4564 mono_os_sem_init (&prof->writer_queue_sem, 0);
4566 mono_lock_free_queue_init (&prof->dumper_queue);
4567 mono_os_sem_init (&prof->dumper_queue_sem, 0);
4569 mono_os_mutex_init (&prof->method_table_mutex);
4570 prof->method_table = mono_conc_hashtable_new (NULL, NULL);
4573 coverage_init (prof);
4574 prof->coverage_filters = filters;
4576 prof->startup_time = current_time ();
4581 * declaration to silence the compiler: this is the entry point that
4582 * mono will load from the shared library and call.
4585 mono_profiler_startup (const char *desc);
4588 mono_profiler_startup_log (const char *desc);
4591 * this is the entry point that will be used when the profiler
4592 * is embedded inside the main executable.
4595 mono_profiler_startup_log (const char *desc)
4597 mono_profiler_startup (desc);
4601 mono_profiler_startup (const char *desc)
4603 GPtrArray *filters = NULL;
4606 proflog_parse_args (&config, desc [3] == ':' ? desc + 4 : "");
4608 //XXX maybe later cleanup to use config directly
4609 nocalls = !(config.effective_mask & PROFLOG_CALL_EVENTS);
4610 no_counters = !(config.effective_mask & PROFLOG_COUNTER_EVENTS);
4611 do_report = config.do_report;
4612 do_debug = config.do_debug;
4613 do_heap_shot = (config.effective_mask & PROFLOG_HEAPSHOT_FEATURE);
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 & PROFLOG_SAMPLING_FEATURE);
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 & PROFLOG_CODE_COV_FEATURE);
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 & PROFLOG_DOMAIN_EVENTS) {
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 & PROFLOG_ASSEMBLY_EVENTS) {
4672 events |= MONO_PROFILE_ASSEMBLY_EVENTS;
4673 mono_profiler_install_assembly (NULL, assembly_loaded, assembly_unloaded, NULL);
4676 if (config.effective_mask & PROFLOG_MODULE_EVENTS) {
4677 events |= MONO_PROFILE_MODULE_EVENTS;
4678 mono_profiler_install_module (NULL, image_loaded, image_unloaded, NULL);
4681 if (config.effective_mask & PROFLOG_CLASS_EVENTS) {
4682 events |= MONO_PROFILE_CLASS_EVENTS;
4683 mono_profiler_install_class (NULL, class_loaded, class_unloaded, NULL);
4686 if (config.effective_mask & PROFLOG_JIT_COMPILATION_EVENTS) {
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 & PROFLOG_EXCEPTION_EVENTS) {
4693 events |= MONO_PROFILE_EXCEPTIONS;
4694 mono_profiler_install_exception (throw_exc, method_exc_leave, clause_exc);
4697 if (config.effective_mask & PROFLOG_ALLOCATION_EVENTS) {
4698 events |= MONO_PROFILE_ALLOCATIONS;
4699 mono_profiler_install_allocation (gc_alloc);
4702 //PROFLOG_GC_EVENTS is mandatory
4703 //PROFLOG_THREAD_EVENTS is mandatory
4705 if (config.effective_mask & PROFLOG_CALL_EVENTS) {
4706 events |= MONO_PROFILE_ENTER_LEAVE;
4707 mono_profiler_install_enter_leave (method_enter, method_leave);
4710 if (config.effective_mask & PROFLOG_INS_COVERAGE_EVENTS) {
4711 events |= MONO_PROFILE_INS_COVERAGE;
4712 mono_profiler_install_coverage_filter (coverage_filter);
4715 //XXX should we check for PROFLOG_SAMPLING_FEATURE instead??
4716 if (config.effective_mask & PROFLOG_SAMPLING_EVENTS) {
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 & PROFLOG_MONITOR_EVENTS) {
4723 events |= MONO_PROFILE_MONITOR_EVENTS;
4724 mono_profiler_install_monitor (monitor_event);
4727 if (config.effective_mask & PROFLOG_GC_MOVES_EVENTS) {
4728 events |= MONO_PROFILE_GC_MOVES;
4729 mono_profiler_install_gc_moves (gc_moves);
4732 // TODO split those in two profiler events
4733 if (config.effective_mask & (PROFLOG_GC_ROOT_EVENTS | PROFLOG_GC_HANDLE_EVENTS)) {
4734 events |= MONO_PROFILE_GC_ROOTS;
4735 mono_profiler_install_gc_roots (
4736 config.effective_mask & (PROFLOG_GC_HANDLE_EVENTS) ? gc_handle : NULL,
4737 (config.effective_mask & PROFLOG_GC_ROOT_EVENTS) ? gc_roots : NULL);
4740 if (config.effective_mask & PROFLOG_CONTEXT_EVENTS) {
4741 events |= MONO_PROFILE_CONTEXT_EVENTS;
4742 mono_profiler_install_context (context_loaded, context_unloaded);
4745 if (config.effective_mask & PROFLOG_FINALIZATION_EVENTS) {
4746 events |= MONO_PROFILE_GC_FINALIZATION;
4747 mono_profiler_install_gc_finalize (finalize_begin, finalize_object_begin, finalize_object_end, finalize_end);
4748 } else if (ENABLED (PROFLOG_HEAPSHOT_FEATURE) && config.hs_mode_ondemand) {
4749 //On Demand heapshot uses the finalizer thread to force a collection and thus a heapshot
4750 events |= MONO_PROFILE_GC_FINALIZATION;
4751 mono_profiler_install_gc_finalize (NULL, NULL, NULL, finalize_end);
4754 //PROFLOG_COUNTER_EVENTS is a pseudo event controled by the no_counters global var
4755 //PROFLOG_GC_HANDLE_EVENTS is handled together with PROFLOG_GC_ROOT_EVENTS
4757 mono_profiler_set_events ((MonoProfileFlags)events);