1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef V8_COUNTERS_H_
6 #define V8_COUNTERS_H_
7
8 #include "include/v8.h"
9 #include "src/allocation.h"
10 #include "src/base/atomic-utils.h"
11 #include "src/base/platform/elapsed-timer.h"
12 #include "src/base/platform/time.h"
13 #include "src/builtins/builtins.h"
14 #include "src/globals.h"
15 #include "src/isolate.h"
16 #include "src/objects.h"
17 #include "src/runtime/runtime.h"
18 #include "src/tracing/trace-event.h"
19 #include "src/tracing/traced-value.h"
20 #include "src/tracing/tracing-category-observer.h"
21
22 namespace v8 {
23 namespace internal {
24
25 // StatsCounters is an interface for plugging into external
26 // counters for monitoring. Counters can be looked up and
27 // manipulated by name.
28
29 class StatsTable {
30 public:
31 // Register an application-defined function where
32 // counters can be looked up.
SetCounterFunction(CounterLookupCallback f)33 void SetCounterFunction(CounterLookupCallback f) {
34 lookup_function_ = f;
35 }
36
37 // Register an application-defined function to create
38 // a histogram for passing to the AddHistogramSample function
SetCreateHistogramFunction(CreateHistogramCallback f)39 void SetCreateHistogramFunction(CreateHistogramCallback f) {
40 create_histogram_function_ = f;
41 }
42
43 // Register an application-defined function to add a sample
44 // to a histogram created with CreateHistogram function
SetAddHistogramSampleFunction(AddHistogramSampleCallback f)45 void SetAddHistogramSampleFunction(AddHistogramSampleCallback f) {
46 add_histogram_sample_function_ = f;
47 }
48
HasCounterFunction()49 bool HasCounterFunction() const {
50 return lookup_function_ != NULL;
51 }
52
53 // Lookup the location of a counter by name. If the lookup
54 // is successful, returns a non-NULL pointer for writing the
55 // value of the counter. Each thread calling this function
56 // may receive a different location to store it's counter.
57 // The return value must not be cached and re-used across
58 // threads, although a single thread is free to cache it.
FindLocation(const char * name)59 int* FindLocation(const char* name) {
60 if (!lookup_function_) return NULL;
61 return lookup_function_(name);
62 }
63
64 // Create a histogram by name. If the create is successful,
65 // returns a non-NULL pointer for use with AddHistogramSample
66 // function. min and max define the expected minimum and maximum
67 // sample values. buckets is the maximum number of buckets
68 // that the samples will be grouped into.
CreateHistogram(const char * name,int min,int max,size_t buckets)69 void* CreateHistogram(const char* name,
70 int min,
71 int max,
72 size_t buckets) {
73 if (!create_histogram_function_) return NULL;
74 return create_histogram_function_(name, min, max, buckets);
75 }
76
77 // Add a sample to a histogram created with the CreateHistogram
78 // function.
AddHistogramSample(void * histogram,int sample)79 void AddHistogramSample(void* histogram, int sample) {
80 if (!add_histogram_sample_function_) return;
81 return add_histogram_sample_function_(histogram, sample);
82 }
83
84 private:
85 StatsTable();
86
87 CounterLookupCallback lookup_function_;
88 CreateHistogramCallback create_histogram_function_;
89 AddHistogramSampleCallback add_histogram_sample_function_;
90
91 friend class Isolate;
92
93 DISALLOW_COPY_AND_ASSIGN(StatsTable);
94 };
95
96 // StatsCounters are dynamically created values which can be tracked in
97 // the StatsTable. They are designed to be lightweight to create and
98 // easy to use.
99 //
100 // Internally, a counter represents a value in a row of a StatsTable.
101 // The row has a 32bit value for each process/thread in the table and also
102 // a name (stored in the table metadata). Since the storage location can be
103 // thread-specific, this class cannot be shared across threads.
104 class StatsCounter {
105 public:
StatsCounter()106 StatsCounter() { }
StatsCounter(Isolate * isolate,const char * name)107 explicit StatsCounter(Isolate* isolate, const char* name)
108 : isolate_(isolate), name_(name), ptr_(NULL), lookup_done_(false) { }
109
110 // Sets the counter to a specific value.
Set(int value)111 void Set(int value) {
112 int* loc = GetPtr();
113 if (loc) *loc = value;
114 }
115
116 // Increments the counter.
Increment()117 void Increment() {
118 int* loc = GetPtr();
119 if (loc) (*loc)++;
120 }
121
Increment(int value)122 void Increment(int value) {
123 int* loc = GetPtr();
124 if (loc)
125 (*loc) += value;
126 }
127
128 // Decrements the counter.
Decrement()129 void Decrement() {
130 int* loc = GetPtr();
131 if (loc) (*loc)--;
132 }
133
Decrement(int value)134 void Decrement(int value) {
135 int* loc = GetPtr();
136 if (loc) (*loc) -= value;
137 }
138
139 // Is this counter enabled?
140 // Returns false if table is full.
Enabled()141 bool Enabled() {
142 return GetPtr() != NULL;
143 }
144
145 // Get the internal pointer to the counter. This is used
146 // by the code generator to emit code that manipulates a
147 // given counter without calling the runtime system.
GetInternalPointer()148 int* GetInternalPointer() {
149 int* loc = GetPtr();
150 DCHECK(loc != NULL);
151 return loc;
152 }
153
154 // Reset the cached internal pointer.
Reset()155 void Reset() { lookup_done_ = false; }
156
157 protected:
158 // Returns the cached address of this counter location.
GetPtr()159 int* GetPtr() {
160 if (lookup_done_) return ptr_;
161 lookup_done_ = true;
162 ptr_ = FindLocationInStatsTable();
163 return ptr_;
164 }
165
166 private:
167 int* FindLocationInStatsTable() const;
168
169 Isolate* isolate_;
170 const char* name_;
171 int* ptr_;
172 bool lookup_done_;
173 };
174
175 // A Histogram represents a dynamically created histogram in the StatsTable.
176 // It will be registered with the histogram system on first use.
177 class Histogram {
178 public:
Histogram()179 Histogram() { }
Histogram(const char * name,int min,int max,int num_buckets,Isolate * isolate)180 Histogram(const char* name,
181 int min,
182 int max,
183 int num_buckets,
184 Isolate* isolate)
185 : name_(name),
186 min_(min),
187 max_(max),
188 num_buckets_(num_buckets),
189 histogram_(NULL),
190 lookup_done_(false),
191 isolate_(isolate) { }
192
193 // Add a single sample to this histogram.
194 void AddSample(int sample);
195
196 // Returns true if this histogram is enabled.
Enabled()197 bool Enabled() {
198 return GetHistogram() != NULL;
199 }
200
201 // Reset the cached internal pointer.
Reset()202 void Reset() {
203 lookup_done_ = false;
204 }
205
name()206 const char* name() { return name_; }
207
208 protected:
209 // Returns the handle to the histogram.
GetHistogram()210 void* GetHistogram() {
211 if (!lookup_done_) {
212 lookup_done_ = true;
213 histogram_ = CreateHistogram();
214 }
215 return histogram_;
216 }
217
isolate()218 Isolate* isolate() const { return isolate_; }
219
220 private:
221 void* CreateHistogram() const;
222
223 const char* name_;
224 int min_;
225 int max_;
226 int num_buckets_;
227 void* histogram_;
228 bool lookup_done_;
229 Isolate* isolate_;
230 };
231
232 // A HistogramTimer allows distributions of results to be created.
233 class HistogramTimer : public Histogram {
234 public:
235 enum Resolution {
236 MILLISECOND,
237 MICROSECOND
238 };
239
HistogramTimer()240 HistogramTimer() {}
HistogramTimer(const char * name,int min,int max,Resolution resolution,int num_buckets,Isolate * isolate)241 HistogramTimer(const char* name, int min, int max, Resolution resolution,
242 int num_buckets, Isolate* isolate)
243 : Histogram(name, min, max, num_buckets, isolate),
244 resolution_(resolution) {}
245
246 // Start the timer.
247 void Start();
248
249 // Stop the timer and record the results.
250 void Stop();
251
252 // Returns true if the timer is running.
Running()253 bool Running() {
254 return Enabled() && timer_.IsStarted();
255 }
256
257 // TODO(bmeurer): Remove this when HistogramTimerScope is fixed.
258 #ifdef DEBUG
timer()259 base::ElapsedTimer* timer() { return &timer_; }
260 #endif
261
262 private:
263 base::ElapsedTimer timer_;
264 Resolution resolution_;
265 };
266
267 // Helper class for scoping a HistogramTimer.
268 // TODO(bmeurer): The ifdeffery is an ugly hack around the fact that the
269 // Parser is currently reentrant (when it throws an error, we call back
270 // into JavaScript and all bets are off), but ElapsedTimer is not
271 // reentry-safe. Fix this properly and remove |allow_nesting|.
272 class HistogramTimerScope BASE_EMBEDDED {
273 public:
274 explicit HistogramTimerScope(HistogramTimer* timer,
275 bool allow_nesting = false)
276 #ifdef DEBUG
timer_(timer)277 : timer_(timer),
278 skipped_timer_start_(false) {
279 if (timer_->timer()->IsStarted() && allow_nesting) {
280 skipped_timer_start_ = true;
281 } else {
282 timer_->Start();
283 }
284 }
285 #else
286 : timer_(timer) {
287 timer_->Start();
288 }
289 #endif
~HistogramTimerScope()290 ~HistogramTimerScope() {
291 #ifdef DEBUG
292 if (!skipped_timer_start_) {
293 timer_->Stop();
294 }
295 #else
296 timer_->Stop();
297 #endif
298 }
299
300 private:
301 HistogramTimer* timer_;
302 #ifdef DEBUG
303 bool skipped_timer_start_;
304 #endif
305 };
306
307
308 // A histogram timer that can aggregate events within a larger scope.
309 //
310 // Intended use of this timer is to have an outer (aggregating) and an inner
311 // (to be aggregated) scope, where the inner scope measure the time of events,
312 // and all those inner scope measurements will be summed up by the outer scope.
313 // An example use might be to aggregate the time spent in lazy compilation
314 // while running a script.
315 //
316 // Helpers:
317 // - AggregatingHistogramTimerScope, the "outer" scope within which
318 // times will be summed up.
319 // - AggregatedHistogramTimerScope, the "inner" scope which defines the
320 // events to be timed.
321 class AggregatableHistogramTimer : public Histogram {
322 public:
AggregatableHistogramTimer()323 AggregatableHistogramTimer() {}
AggregatableHistogramTimer(const char * name,int min,int max,int num_buckets,Isolate * isolate)324 AggregatableHistogramTimer(const char* name, int min, int max,
325 int num_buckets, Isolate* isolate)
326 : Histogram(name, min, max, num_buckets, isolate) {}
327
328 // Start/stop the "outer" scope.
Start()329 void Start() { time_ = base::TimeDelta(); }
Stop()330 void Stop() { AddSample(static_cast<int>(time_.InMicroseconds())); }
331
332 // Add a time value ("inner" scope).
Add(base::TimeDelta other)333 void Add(base::TimeDelta other) { time_ += other; }
334
335 private:
336 base::TimeDelta time_;
337 };
338
339 // A helper class for use with AggregatableHistogramTimer. This is the
340 // // outer-most timer scope used with an AggregatableHistogramTimer. It will
341 // // aggregate the information from the inner AggregatedHistogramTimerScope.
342 class AggregatingHistogramTimerScope {
343 public:
AggregatingHistogramTimerScope(AggregatableHistogramTimer * histogram)344 explicit AggregatingHistogramTimerScope(AggregatableHistogramTimer* histogram)
345 : histogram_(histogram) {
346 histogram_->Start();
347 }
~AggregatingHistogramTimerScope()348 ~AggregatingHistogramTimerScope() { histogram_->Stop(); }
349
350 private:
351 AggregatableHistogramTimer* histogram_;
352 };
353
354 // A helper class for use with AggregatableHistogramTimer, the "inner" scope
355 // // which defines the events to be timed.
356 class AggregatedHistogramTimerScope {
357 public:
AggregatedHistogramTimerScope(AggregatableHistogramTimer * histogram)358 explicit AggregatedHistogramTimerScope(AggregatableHistogramTimer* histogram)
359 : histogram_(histogram) {
360 timer_.Start();
361 }
~AggregatedHistogramTimerScope()362 ~AggregatedHistogramTimerScope() { histogram_->Add(timer_.Elapsed()); }
363
364 private:
365 base::ElapsedTimer timer_;
366 AggregatableHistogramTimer* histogram_;
367 };
368
369
370 // AggretatedMemoryHistogram collects (time, value) sample pairs and turns
371 // them into time-uniform samples for the backing historgram, such that the
372 // backing histogram receives one sample every T ms, where the T is controlled
373 // by the FLAG_histogram_interval.
374 //
375 // More formally: let F be a real-valued function that maps time to sample
376 // values. We define F as a linear interpolation between adjacent samples. For
377 // each time interval [x; x + T) the backing histogram gets one sample value
378 // that is the average of F(t) in the interval.
379 template <typename Histogram>
380 class AggregatedMemoryHistogram {
381 public:
AggregatedMemoryHistogram()382 AggregatedMemoryHistogram()
383 : is_initialized_(false),
384 start_ms_(0.0),
385 last_ms_(0.0),
386 aggregate_value_(0.0),
387 last_value_(0.0),
388 backing_histogram_(NULL) {}
389
AggregatedMemoryHistogram(Histogram * backing_histogram)390 explicit AggregatedMemoryHistogram(Histogram* backing_histogram)
391 : AggregatedMemoryHistogram() {
392 backing_histogram_ = backing_histogram;
393 }
394
395 // Invariants that hold before and after AddSample if
396 // is_initialized_ is true:
397 //
398 // 1) For we processed samples that came in before start_ms_ and sent the
399 // corresponding aggregated samples to backing histogram.
400 // 2) (last_ms_, last_value_) is the last received sample.
401 // 3) last_ms_ < start_ms_ + FLAG_histogram_interval.
402 // 4) aggregate_value_ is the average of the function that is constructed by
403 // linearly interpolating samples received between start_ms_ and last_ms_.
404 void AddSample(double current_ms, double current_value);
405
406 private:
407 double Aggregate(double current_ms, double current_value);
408 bool is_initialized_;
409 double start_ms_;
410 double last_ms_;
411 double aggregate_value_;
412 double last_value_;
413 Histogram* backing_histogram_;
414 };
415
416
417 template <typename Histogram>
AddSample(double current_ms,double current_value)418 void AggregatedMemoryHistogram<Histogram>::AddSample(double current_ms,
419 double current_value) {
420 if (!is_initialized_) {
421 aggregate_value_ = current_value;
422 start_ms_ = current_ms;
423 last_value_ = current_value;
424 last_ms_ = current_ms;
425 is_initialized_ = true;
426 } else {
427 const double kEpsilon = 1e-6;
428 const int kMaxSamples = 1000;
429 if (current_ms < last_ms_ + kEpsilon) {
430 // Two samples have the same time, remember the last one.
431 last_value_ = current_value;
432 } else {
433 double sample_interval_ms = FLAG_histogram_interval;
434 double end_ms = start_ms_ + sample_interval_ms;
435 if (end_ms <= current_ms + kEpsilon) {
436 // Linearly interpolate between the last_ms_ and the current_ms.
437 double slope = (current_value - last_value_) / (current_ms - last_ms_);
438 int i;
439 // Send aggregated samples to the backing histogram from the start_ms
440 // to the current_ms.
441 for (i = 0; i < kMaxSamples && end_ms <= current_ms + kEpsilon; i++) {
442 double end_value = last_value_ + (end_ms - last_ms_) * slope;
443 double sample_value;
444 if (i == 0) {
445 // Take aggregate_value_ into account.
446 sample_value = Aggregate(end_ms, end_value);
447 } else {
448 // There is no aggregate_value_ for i > 0.
449 sample_value = (last_value_ + end_value) / 2;
450 }
451 backing_histogram_->AddSample(static_cast<int>(sample_value + 0.5));
452 last_value_ = end_value;
453 last_ms_ = end_ms;
454 end_ms += sample_interval_ms;
455 }
456 if (i == kMaxSamples) {
457 // We hit the sample limit, ignore the remaining samples.
458 aggregate_value_ = current_value;
459 start_ms_ = current_ms;
460 } else {
461 aggregate_value_ = last_value_;
462 start_ms_ = last_ms_;
463 }
464 }
465 aggregate_value_ = current_ms > start_ms_ + kEpsilon
466 ? Aggregate(current_ms, current_value)
467 : aggregate_value_;
468 last_value_ = current_value;
469 last_ms_ = current_ms;
470 }
471 }
472 }
473
474
475 template <typename Histogram>
Aggregate(double current_ms,double current_value)476 double AggregatedMemoryHistogram<Histogram>::Aggregate(double current_ms,
477 double current_value) {
478 double interval_ms = current_ms - start_ms_;
479 double value = (current_value + last_value_) / 2;
480 // The aggregate_value_ is the average for [start_ms_; last_ms_].
481 // The value is the average for [last_ms_; current_ms].
482 // Return the weighted average of the aggregate_value_ and the value.
483 return aggregate_value_ * ((last_ms_ - start_ms_) / interval_ms) +
484 value * ((current_ms - last_ms_) / interval_ms);
485 }
486
487 struct RuntimeCallCounter {
RuntimeCallCounterRuntimeCallCounter488 explicit RuntimeCallCounter(const char* name) : name(name) {}
489 V8_NOINLINE void Reset();
490 V8_NOINLINE void Dump(v8::tracing::TracedValue* value);
491 void Add(RuntimeCallCounter* other);
492
493 const char* name;
494 int64_t count = 0;
495 base::TimeDelta time;
496 };
497
498 // RuntimeCallTimer is used to keep track of the stack of currently active
499 // timers used for properly measuring the own time of a RuntimeCallCounter.
500 class RuntimeCallTimer {
501 public:
counter()502 RuntimeCallCounter* counter() { return counter_; }
timer()503 base::ElapsedTimer timer() { return timer_; }
parent()504 RuntimeCallTimer* parent() const { return parent_.Value(); }
505
506 private:
507 friend class RuntimeCallStats;
508
Start(RuntimeCallCounter * counter,RuntimeCallTimer * parent)509 inline void Start(RuntimeCallCounter* counter, RuntimeCallTimer* parent) {
510 counter_ = counter;
511 parent_.SetValue(parent);
512 if (FLAG_runtime_stats !=
513 v8::tracing::TracingCategoryObserver::ENABLED_BY_SAMPLING) {
514 timer_.Start();
515 }
516 }
517
Stop()518 inline RuntimeCallTimer* Stop() {
519 if (!timer_.IsStarted()) return parent();
520 base::TimeDelta delta = timer_.Elapsed();
521 timer_.Stop();
522 counter_->count++;
523 counter_->time += delta;
524 if (parent()) {
525 // Adjust parent timer so that it does not include sub timer's time.
526 parent()->counter_->time -= delta;
527 }
528 return parent();
529 }
530
Elapsed()531 inline void Elapsed() {
532 base::TimeDelta delta = timer_.Elapsed();
533 counter_->time += delta;
534 if (parent()) {
535 parent()->counter_->time -= delta;
536 parent()->Elapsed();
537 }
538 timer_.Restart();
539 }
540
name()541 const char* name() { return counter_->name; }
542
543 RuntimeCallCounter* counter_ = nullptr;
544 base::AtomicValue<RuntimeCallTimer*> parent_;
545 base::ElapsedTimer timer_;
546 };
547
548 #define FOR_EACH_API_COUNTER(V) \
549 V(ArrayBuffer_Cast) \
550 V(ArrayBuffer_Neuter) \
551 V(ArrayBuffer_New) \
552 V(Array_CloneElementAt) \
553 V(Array_New) \
554 V(BooleanObject_BooleanValue) \
555 V(BooleanObject_New) \
556 V(Context_New) \
557 V(Context_NewRemoteContext) \
558 V(DataView_New) \
559 V(Date_DateTimeConfigurationChangeNotification) \
560 V(Date_New) \
561 V(Date_NumberValue) \
562 V(Debug_Call) \
563 V(Debug_GetMirror) \
564 V(Error_New) \
565 V(External_New) \
566 V(Float32Array_New) \
567 V(Float64Array_New) \
568 V(Function_Call) \
569 V(Function_New) \
570 V(Function_NewInstance) \
571 V(FunctionTemplate_GetFunction) \
572 V(FunctionTemplate_New) \
573 V(FunctionTemplate_NewRemoteInstance) \
574 V(FunctionTemplate_NewWithFastHandler) \
575 V(Int16Array_New) \
576 V(Int32Array_New) \
577 V(Int8Array_New) \
578 V(JSON_Parse) \
579 V(JSON_Stringify) \
580 V(Map_AsArray) \
581 V(Map_Clear) \
582 V(Map_Delete) \
583 V(Map_Get) \
584 V(Map_Has) \
585 V(Map_New) \
586 V(Map_Set) \
587 V(Message_GetEndColumn) \
588 V(Message_GetLineNumber) \
589 V(Message_GetSourceLine) \
590 V(Message_GetStartColumn) \
591 V(Module_Evaluate) \
592 V(Module_Instantiate) \
593 V(NumberObject_New) \
594 V(NumberObject_NumberValue) \
595 V(Object_CallAsConstructor) \
596 V(Object_CallAsFunction) \
597 V(Object_CreateDataProperty) \
598 V(Object_DefineOwnProperty) \
599 V(Object_DefineProperty) \
600 V(Object_Delete) \
601 V(Object_DeleteProperty) \
602 V(Object_ForceSet) \
603 V(Object_Get) \
604 V(Object_GetOwnPropertyDescriptor) \
605 V(Object_GetOwnPropertyNames) \
606 V(Object_GetPropertyAttributes) \
607 V(Object_GetPropertyNames) \
608 V(Object_GetRealNamedProperty) \
609 V(Object_GetRealNamedPropertyAttributes) \
610 V(Object_GetRealNamedPropertyAttributesInPrototypeChain) \
611 V(Object_GetRealNamedPropertyInPrototypeChain) \
612 V(Object_HasOwnProperty) \
613 V(Object_HasRealIndexedProperty) \
614 V(Object_HasRealNamedCallbackProperty) \
615 V(Object_HasRealNamedProperty) \
616 V(Object_Int32Value) \
617 V(Object_IntegerValue) \
618 V(Object_New) \
619 V(Object_NumberValue) \
620 V(Object_ObjectProtoToString) \
621 V(Object_Set) \
622 V(Object_SetAccessor) \
623 V(Object_SetIntegrityLevel) \
624 V(Object_SetPrivate) \
625 V(Object_SetPrototype) \
626 V(ObjectTemplate_New) \
627 V(ObjectTemplate_NewInstance) \
628 V(Object_ToArrayIndex) \
629 V(Object_ToDetailString) \
630 V(Object_ToInt32) \
631 V(Object_ToInteger) \
632 V(Object_ToNumber) \
633 V(Object_ToObject) \
634 V(Object_ToString) \
635 V(Object_ToUint32) \
636 V(Object_Uint32Value) \
637 V(Persistent_New) \
638 V(Private_New) \
639 V(Promise_Catch) \
640 V(Promise_Chain) \
641 V(Promise_HasRejectHandler) \
642 V(Promise_Resolver_New) \
643 V(Promise_Resolver_Resolve) \
644 V(Promise_Then) \
645 V(Proxy_New) \
646 V(RangeError_New) \
647 V(ReferenceError_New) \
648 V(RegExp_New) \
649 V(ScriptCompiler_Compile) \
650 V(ScriptCompiler_CompileFunctionInContext) \
651 V(ScriptCompiler_CompileUnbound) \
652 V(Script_Run) \
653 V(Set_Add) \
654 V(Set_AsArray) \
655 V(Set_Clear) \
656 V(Set_Delete) \
657 V(Set_Has) \
658 V(Set_New) \
659 V(SharedArrayBuffer_New) \
660 V(String_Concat) \
661 V(String_NewExternalOneByte) \
662 V(String_NewExternalTwoByte) \
663 V(String_NewFromOneByte) \
664 V(String_NewFromTwoByte) \
665 V(String_NewFromUtf8) \
666 V(StringObject_New) \
667 V(StringObject_StringValue) \
668 V(String_Write) \
669 V(String_WriteUtf8) \
670 V(Symbol_New) \
671 V(SymbolObject_New) \
672 V(SymbolObject_SymbolValue) \
673 V(SyntaxError_New) \
674 V(TryCatch_StackTrace) \
675 V(TypeError_New) \
676 V(Uint16Array_New) \
677 V(Uint32Array_New) \
678 V(Uint8Array_New) \
679 V(Uint8ClampedArray_New) \
680 V(UnboundScript_GetId) \
681 V(UnboundScript_GetLineNumber) \
682 V(UnboundScript_GetName) \
683 V(UnboundScript_GetSourceMappingURL) \
684 V(UnboundScript_GetSourceURL) \
685 V(Value_TypeOf) \
686 V(ValueDeserializer_ReadHeader) \
687 V(ValueDeserializer_ReadValue) \
688 V(ValueSerializer_WriteValue)
689
690 #define FOR_EACH_MANUAL_COUNTER(V) \
691 V(AccessorGetterCallback) \
692 V(AccessorNameGetterCallback) \
693 V(AccessorNameGetterCallback_ArrayLength) \
694 V(AccessorNameGetterCallback_BoundFunctionLength) \
695 V(AccessorNameGetterCallback_BoundFunctionName) \
696 V(AccessorNameGetterCallback_FunctionPrototype) \
697 V(AccessorNameGetterCallback_StringLength) \
698 V(AccessorNameSetterCallback) \
699 V(Compile) \
700 V(CompileCode) \
701 V(CompileCodeLazy) \
702 V(CompileDeserialize) \
703 V(CompileEval) \
704 V(CompileFullCode) \
705 V(CompileIgnition) \
706 V(CompilerDispatcher) \
707 V(CompileSerialize) \
708 V(DeoptimizeCode) \
709 V(FunctionCallback) \
710 V(GC) \
711 V(GenericNamedPropertyDefinerCallback) \
712 V(GenericNamedPropertyDeleterCallback) \
713 V(GenericNamedPropertyDescriptorCallback) \
714 V(GenericNamedPropertyQueryCallback) \
715 V(GenericNamedPropertySetterCallback) \
716 V(IndexedPropertyDefinerCallback) \
717 V(IndexedPropertyDeleterCallback) \
718 V(IndexedPropertyDescriptorCallback) \
719 V(IndexedPropertyGetterCallback) \
720 V(IndexedPropertyQueryCallback) \
721 V(IndexedPropertySetterCallback) \
722 V(InvokeApiInterruptCallbacks) \
723 V(InvokeFunctionCallback) \
724 V(JS_Execution) \
725 V(Map_SetPrototype) \
726 V(Map_TransitionToAccessorProperty) \
727 V(Map_TransitionToDataProperty) \
728 V(Object_DeleteProperty) \
729 V(OptimizeCode) \
730 V(ParseArrowFunctionLiteral) \
731 V(ParseEval) \
732 V(ParseFunction) \
733 V(ParseFunctionLiteral) \
734 V(ParseProgram) \
735 V(PreParseArrowFunctionLiteral) \
736 V(PreParseNoVariableResolution) \
737 V(PreParseWithVariableResolution) \
738 V(PropertyCallback) \
739 V(PrototypeMap_TransitionToAccessorProperty) \
740 V(PrototypeMap_TransitionToDataProperty) \
741 V(PrototypeObject_DeleteProperty) \
742 V(RecompileConcurrent) \
743 V(RecompileSynchronous) \
744 /* Dummy counter for the unexpected stub miss. */ \
745 V(UnexpectedStubMiss)
746
747 #define FOR_EACH_HANDLER_COUNTER(V) \
748 V(IC_HandlerCacheHit) \
749 V(KeyedLoadIC_LoadIndexedStringStub) \
750 V(KeyedLoadIC_LoadIndexedInterceptorStub) \
751 V(KeyedLoadIC_KeyedLoadSloppyArgumentsStub) \
752 V(KeyedLoadIC_LoadElementDH) \
753 V(KeyedLoadIC_LoadFastElementStub) \
754 V(KeyedLoadIC_LoadDictionaryElementStub) \
755 V(KeyedLoadIC_SlowStub) \
756 V(KeyedStoreIC_ElementsTransitionAndStoreStub) \
757 V(KeyedStoreIC_KeyedStoreSloppyArgumentsStub) \
758 V(KeyedStoreIC_SlowStub) \
759 V(KeyedStoreIC_StoreFastElementStub) \
760 V(KeyedStoreIC_StoreElementStub) \
761 V(LoadIC_FunctionPrototypeStub) \
762 V(LoadIC_HandlerCacheHit_AccessCheck) \
763 V(LoadIC_HandlerCacheHit_Exotic) \
764 V(LoadIC_HandlerCacheHit_Interceptor) \
765 V(LoadIC_HandlerCacheHit_JSProxy) \
766 V(LoadIC_HandlerCacheHit_NonExistent) \
767 V(LoadIC_HandlerCacheHit_Accessor) \
768 V(LoadIC_HandlerCacheHit_Data) \
769 V(LoadIC_HandlerCacheHit_Transition) \
770 V(LoadIC_LoadApiGetterDH) \
771 V(LoadIC_LoadApiGetterFromPrototypeDH) \
772 V(LoadIC_LoadApiGetterStub) \
773 V(LoadIC_LoadCallback) \
774 V(LoadIC_LoadConstantDH) \
775 V(LoadIC_LoadConstantFromPrototypeDH) \
776 V(LoadIC_LoadConstant) \
777 V(LoadIC_LoadConstantStub) \
778 V(LoadIC_LoadFieldDH) \
779 V(LoadIC_LoadFieldFromPrototypeDH) \
780 V(LoadIC_LoadField) \
781 V(LoadIC_LoadFieldStub) \
782 V(LoadIC_LoadGlobal) \
783 V(LoadIC_LoadInterceptor) \
784 V(LoadIC_LoadNonexistentDH) \
785 V(LoadIC_LoadNonexistent) \
786 V(LoadIC_LoadNormal) \
787 V(LoadIC_LoadScriptContextFieldStub) \
788 V(LoadIC_LoadViaGetter) \
789 V(LoadIC_Premonomorphic) \
790 V(LoadIC_SlowStub) \
791 V(LoadIC_StringLengthStub) \
792 V(StoreIC_HandlerCacheHit_AccessCheck) \
793 V(StoreIC_HandlerCacheHit_Exotic) \
794 V(StoreIC_HandlerCacheHit_Interceptor) \
795 V(StoreIC_HandlerCacheHit_JSProxy) \
796 V(StoreIC_HandlerCacheHit_NonExistent) \
797 V(StoreIC_HandlerCacheHit_Accessor) \
798 V(StoreIC_HandlerCacheHit_Data) \
799 V(StoreIC_HandlerCacheHit_Transition) \
800 V(StoreIC_Premonomorphic) \
801 V(StoreIC_SlowStub) \
802 V(StoreIC_StoreCallback) \
803 V(StoreIC_StoreField) \
804 V(StoreIC_StoreFieldDH) \
805 V(StoreIC_StoreFieldStub) \
806 V(StoreIC_StoreGlobal) \
807 V(StoreIC_StoreGlobalTransition) \
808 V(StoreIC_StoreInterceptorStub) \
809 V(StoreIC_StoreNormal) \
810 V(StoreIC_StoreScriptContextFieldStub) \
811 V(StoreIC_StoreTransition) \
812 V(StoreIC_StoreTransitionDH) \
813 V(StoreIC_StoreViaSetter)
814
815 class RuntimeCallStats : public ZoneObject {
816 public:
817 typedef RuntimeCallCounter RuntimeCallStats::*CounterId;
818
819 #define CALL_RUNTIME_COUNTER(name) \
820 RuntimeCallCounter name = RuntimeCallCounter(#name);
821 FOR_EACH_MANUAL_COUNTER(CALL_RUNTIME_COUNTER)
822 #undef CALL_RUNTIME_COUNTER
823 #define CALL_RUNTIME_COUNTER(name, nargs, ressize) \
824 RuntimeCallCounter Runtime_##name = RuntimeCallCounter(#name);
825 FOR_EACH_INTRINSIC(CALL_RUNTIME_COUNTER)
826 #undef CALL_RUNTIME_COUNTER
827 #define CALL_BUILTIN_COUNTER(name) \
828 RuntimeCallCounter Builtin_##name = RuntimeCallCounter(#name);
829 BUILTIN_LIST_C(CALL_BUILTIN_COUNTER)
830 #undef CALL_BUILTIN_COUNTER
831 #define CALL_BUILTIN_COUNTER(name) \
832 RuntimeCallCounter API_##name = RuntimeCallCounter("API_" #name);
833 FOR_EACH_API_COUNTER(CALL_BUILTIN_COUNTER)
834 #undef CALL_BUILTIN_COUNTER
835 #define CALL_BUILTIN_COUNTER(name) \
836 RuntimeCallCounter Handler_##name = RuntimeCallCounter(#name);
837 FOR_EACH_HANDLER_COUNTER(CALL_BUILTIN_COUNTER)
838 #undef CALL_BUILTIN_COUNTER
839
840 static const CounterId counters[];
841
842 // Starting measuring the time for a function. This will establish the
843 // connection to the parent counter for properly calculating the own times.
844 static void Enter(RuntimeCallStats* stats, RuntimeCallTimer* timer,
845 CounterId counter_id);
846
847 // Leave a scope for a measured runtime function. This will properly add
848 // the time delta to the current_counter and subtract the delta from its
849 // parent.
850 static void Leave(RuntimeCallStats* stats, RuntimeCallTimer* timer);
851
852 // Set counter id for the innermost measurement. It can be used to refine
853 // event kind when a runtime entry counter is too generic.
854 static void CorrectCurrentCounterId(RuntimeCallStats* stats,
855 CounterId counter_id);
856
857 void Reset();
858 // Add all entries from another stats object.
859 void Add(RuntimeCallStats* other);
860 void Print(std::ostream& os);
861 V8_NOINLINE void Dump(v8::tracing::TracedValue* value);
862
RuntimeCallStats()863 RuntimeCallStats() {
864 Reset();
865 in_use_ = false;
866 }
867
current_timer()868 RuntimeCallTimer* current_timer() { return current_timer_.Value(); }
InUse()869 bool InUse() { return in_use_; }
870
871 private:
872 // Counter to track recursive time events.
873 base::AtomicValue<RuntimeCallTimer*> current_timer_;
874 // Used to track nested tracing scopes.
875 bool in_use_;
876 };
877
878 #define CHANGE_CURRENT_RUNTIME_COUNTER(runtime_call_stats, counter_name) \
879 do { \
880 if (V8_UNLIKELY(FLAG_runtime_stats)) { \
881 RuntimeCallStats::CorrectCurrentCounterId( \
882 runtime_call_stats, &RuntimeCallStats::counter_name); \
883 } \
884 } while (false)
885
886 #define TRACE_HANDLER_STATS(isolate, counter_name) \
887 CHANGE_CURRENT_RUNTIME_COUNTER(isolate->counters()->runtime_call_stats(), \
888 Handler_##counter_name)
889
890 #define HISTOGRAM_RANGE_LIST(HR) \
891 /* Generic range histograms */ \
892 HR(detached_context_age_in_gc, V8.DetachedContextAgeInGC, 0, 20, 21) \
893 HR(gc_idle_time_allotted_in_ms, V8.GCIdleTimeAllottedInMS, 0, 10000, 101) \
894 HR(gc_idle_time_limit_overshot, V8.GCIdleTimeLimit.Overshot, 0, 10000, 101) \
895 HR(gc_idle_time_limit_undershot, V8.GCIdleTimeLimit.Undershot, 0, 10000, \
896 101) \
897 HR(code_cache_reject_reason, V8.CodeCacheRejectReason, 1, 6, 6) \
898 HR(errors_thrown_per_context, V8.ErrorsThrownPerContext, 0, 200, 20) \
899 HR(debug_feature_usage, V8.DebugFeatureUsage, 1, 7, 7) \
900 HR(incremental_marking_reason, V8.GCIncrementalMarkingReason, 0, 21, 22) \
901 HR(mark_compact_reason, V8.GCMarkCompactReason, 0, 21, 22) \
902 HR(scavenge_reason, V8.GCScavengeReason, 0, 21, 22) \
903 /* Asm/Wasm. */ \
904 HR(wasm_functions_per_module, V8.WasmFunctionsPerModule, 1, 10000, 51)
905
906 #define HISTOGRAM_TIMER_LIST(HT) \
907 /* Garbage collection timers. */ \
908 HT(gc_compactor, V8.GCCompactor, 10000, MILLISECOND) \
909 HT(gc_finalize, V8.GCFinalizeMC, 10000, MILLISECOND) \
910 HT(gc_finalize_reduce_memory, V8.GCFinalizeMCReduceMemory, 10000, \
911 MILLISECOND) \
912 HT(gc_scavenger, V8.GCScavenger, 10000, MILLISECOND) \
913 HT(gc_context, V8.GCContext, 10000, \
914 MILLISECOND) /* GC context cleanup time */ \
915 HT(gc_idle_notification, V8.GCIdleNotification, 10000, MILLISECOND) \
916 HT(gc_incremental_marking, V8.GCIncrementalMarking, 10000, MILLISECOND) \
917 HT(gc_incremental_marking_start, V8.GCIncrementalMarkingStart, 10000, \
918 MILLISECOND) \
919 HT(gc_incremental_marking_finalize, V8.GCIncrementalMarkingFinalize, 10000, \
920 MILLISECOND) \
921 HT(gc_low_memory_notification, V8.GCLowMemoryNotification, 10000, \
922 MILLISECOND) \
923 /* Compilation times. */ \
924 HT(compile, V8.CompileMicroSeconds, 1000000, MICROSECOND) \
925 HT(compile_eval, V8.CompileEvalMicroSeconds, 1000000, MICROSECOND) \
926 /* Serialization as part of compilation (code caching) */ \
927 HT(compile_serialize, V8.CompileSerializeMicroSeconds, 100000, MICROSECOND) \
928 HT(compile_deserialize, V8.CompileDeserializeMicroSeconds, 1000000, \
929 MICROSECOND) \
930 /* Total compilation time incl. caching/parsing */ \
931 HT(compile_script, V8.CompileScriptMicroSeconds, 1000000, MICROSECOND) \
932 /* Total JavaScript execution time (including callbacks and runtime calls */ \
933 HT(execute, V8.Execute, 1000000, MICROSECOND) \
934 /* Asm/Wasm */ \
935 HT(wasm_instantiate_module_time, V8.WasmInstantiateModuleMicroSeconds, \
936 1000000, MICROSECOND) \
937 HT(wasm_decode_module_time, V8.WasmDecodeModuleMicroSeconds, 1000000, \
938 MICROSECOND) \
939 HT(wasm_decode_function_time, V8.WasmDecodeFunctionMicroSeconds, 1000000, \
940 MICROSECOND) \
941 HT(wasm_compile_module_time, V8.WasmCompileModuleMicroSeconds, 1000000, \
942 MICROSECOND) \
943 HT(wasm_compile_function_time, V8.WasmCompileFunctionMicroSeconds, 1000000, \
944 MICROSECOND)
945
946 #define AGGREGATABLE_HISTOGRAM_TIMER_LIST(AHT) \
947 AHT(compile_lazy, V8.CompileLazyMicroSeconds)
948
949 #define HISTOGRAM_PERCENTAGE_LIST(HP) \
950 /* Heap fragmentation. */ \
951 HP(external_fragmentation_total, V8.MemoryExternalFragmentationTotal) \
952 HP(external_fragmentation_old_space, V8.MemoryExternalFragmentationOldSpace) \
953 HP(external_fragmentation_code_space, \
954 V8.MemoryExternalFragmentationCodeSpace) \
955 HP(external_fragmentation_map_space, V8.MemoryExternalFragmentationMapSpace) \
956 HP(external_fragmentation_lo_space, V8.MemoryExternalFragmentationLoSpace) \
957 /* Percentages of heap committed to each space. */ \
958 HP(heap_fraction_new_space, V8.MemoryHeapFractionNewSpace) \
959 HP(heap_fraction_old_space, V8.MemoryHeapFractionOldSpace) \
960 HP(heap_fraction_code_space, V8.MemoryHeapFractionCodeSpace) \
961 HP(heap_fraction_map_space, V8.MemoryHeapFractionMapSpace) \
962 HP(heap_fraction_lo_space, V8.MemoryHeapFractionLoSpace)
963
964 #define HISTOGRAM_LEGACY_MEMORY_LIST(HM) \
965 HM(heap_sample_total_committed, V8.MemoryHeapSampleTotalCommitted) \
966 HM(heap_sample_total_used, V8.MemoryHeapSampleTotalUsed) \
967 HM(heap_sample_map_space_committed, V8.MemoryHeapSampleMapSpaceCommitted) \
968 HM(heap_sample_code_space_committed, V8.MemoryHeapSampleCodeSpaceCommitted) \
969 HM(heap_sample_maximum_committed, V8.MemoryHeapSampleMaximumCommitted)
970
971 #define HISTOGRAM_MEMORY_LIST(HM) \
972 HM(memory_heap_committed, V8.MemoryHeapCommitted) \
973 HM(memory_heap_used, V8.MemoryHeapUsed) \
974 /* Asm/Wasm */ \
975 HM(wasm_decode_module_peak_memory_bytes, V8.WasmDecodeModulePeakMemoryBytes) \
976 HM(wasm_compile_function_peak_memory_bytes, \
977 V8.WasmCompileFunctionPeakMemoryBytes) \
978 HM(wasm_min_mem_pages_count, V8.WasmMinMemPagesCount) \
979 HM(wasm_max_mem_pages_count, V8.WasmMaxMemPagesCount) \
980 HM(wasm_function_size_bytes, V8.WasmFunctionSizeBytes) \
981 HM(wasm_module_size_bytes, V8.WasmModuleSizeBytes)
982
983 // WARNING: STATS_COUNTER_LIST_* is a very large macro that is causing MSVC
984 // Intellisense to crash. It was broken into two macros (each of length 40
985 // lines) rather than one macro (of length about 80 lines) to work around
986 // this problem. Please avoid using recursive macros of this length when
987 // possible.
988 #define STATS_COUNTER_LIST_1(SC) \
989 /* Global Handle Count*/ \
990 SC(global_handles, V8.GlobalHandles) \
991 /* OS Memory allocated */ \
992 SC(memory_allocated, V8.OsMemoryAllocated) \
993 SC(maps_normalized, V8.MapsNormalized) \
994 SC(maps_created, V8.MapsCreated) \
995 SC(elements_transitions, V8.ObjectElementsTransitions) \
996 SC(props_to_dictionary, V8.ObjectPropertiesToDictionary) \
997 SC(elements_to_dictionary, V8.ObjectElementsToDictionary) \
998 SC(alive_after_last_gc, V8.AliveAfterLastGC) \
999 SC(objs_since_last_young, V8.ObjsSinceLastYoung) \
1000 SC(objs_since_last_full, V8.ObjsSinceLastFull) \
1001 SC(string_table_capacity, V8.StringTableCapacity) \
1002 SC(number_of_symbols, V8.NumberOfSymbols) \
1003 SC(script_wrappers, V8.ScriptWrappers) \
1004 SC(inlined_copied_elements, V8.InlinedCopiedElements) \
1005 SC(arguments_adaptors, V8.ArgumentsAdaptors) \
1006 SC(compilation_cache_hits, V8.CompilationCacheHits) \
1007 SC(compilation_cache_misses, V8.CompilationCacheMisses) \
1008 /* Amount of evaled source code. */ \
1009 SC(total_eval_size, V8.TotalEvalSize) \
1010 /* Amount of loaded source code. */ \
1011 SC(total_load_size, V8.TotalLoadSize) \
1012 /* Amount of parsed source code. */ \
1013 SC(total_parse_size, V8.TotalParseSize) \
1014 /* Amount of source code skipped over using preparsing. */ \
1015 SC(total_preparse_skipped, V8.TotalPreparseSkipped) \
1016 /* Amount of compiled source code. */ \
1017 SC(total_compile_size, V8.TotalCompileSize) \
1018 /* Amount of source code compiled with the full codegen. */ \
1019 SC(total_full_codegen_source_size, V8.TotalFullCodegenSourceSize) \
1020 /* Number of contexts created from scratch. */ \
1021 SC(contexts_created_from_scratch, V8.ContextsCreatedFromScratch) \
1022 /* Number of contexts created by partial snapshot. */ \
1023 SC(contexts_created_by_snapshot, V8.ContextsCreatedBySnapshot) \
1024 /* Number of code objects found from pc. */ \
1025 SC(pc_to_code, V8.PcToCode) \
1026 SC(pc_to_code_cached, V8.PcToCodeCached) \
1027 /* The store-buffer implementation of the write barrier. */ \
1028 SC(store_buffer_overflows, V8.StoreBufferOverflows)
1029
1030 #define STATS_COUNTER_LIST_2(SC) \
1031 /* Number of code stubs. */ \
1032 SC(code_stubs, V8.CodeStubs) \
1033 /* Amount of stub code. */ \
1034 SC(total_stubs_code_size, V8.TotalStubsCodeSize) \
1035 /* Amount of (JS) compiled code. */ \
1036 SC(total_compiled_code_size, V8.TotalCompiledCodeSize) \
1037 SC(gc_compactor_caused_by_request, V8.GCCompactorCausedByRequest) \
1038 SC(gc_compactor_caused_by_promoted_data, V8.GCCompactorCausedByPromotedData) \
1039 SC(gc_compactor_caused_by_oldspace_exhaustion, \
1040 V8.GCCompactorCausedByOldspaceExhaustion) \
1041 SC(gc_last_resort_from_js, V8.GCLastResortFromJS) \
1042 SC(gc_last_resort_from_handles, V8.GCLastResortFromHandles) \
1043 SC(ic_keyed_load_generic_smi, V8.ICKeyedLoadGenericSmi) \
1044 SC(ic_keyed_load_generic_symbol, V8.ICKeyedLoadGenericSymbol) \
1045 SC(ic_keyed_load_generic_slow, V8.ICKeyedLoadGenericSlow) \
1046 SC(ic_named_load_global_stub, V8.ICNamedLoadGlobalStub) \
1047 SC(ic_store_normal_miss, V8.ICStoreNormalMiss) \
1048 SC(ic_store_normal_hit, V8.ICStoreNormalHit) \
1049 SC(ic_binary_op_miss, V8.ICBinaryOpMiss) \
1050 SC(ic_compare_miss, V8.ICCompareMiss) \
1051 SC(ic_call_miss, V8.ICCallMiss) \
1052 SC(ic_keyed_call_miss, V8.ICKeyedCallMiss) \
1053 SC(ic_load_miss, V8.ICLoadMiss) \
1054 SC(ic_keyed_load_miss, V8.ICKeyedLoadMiss) \
1055 SC(ic_store_miss, V8.ICStoreMiss) \
1056 SC(ic_keyed_store_miss, V8.ICKeyedStoreMiss) \
1057 SC(cow_arrays_created_runtime, V8.COWArraysCreatedRuntime) \
1058 SC(cow_arrays_converted, V8.COWArraysConverted) \
1059 SC(constructed_objects, V8.ConstructedObjects) \
1060 SC(constructed_objects_runtime, V8.ConstructedObjectsRuntime) \
1061 SC(negative_lookups, V8.NegativeLookups) \
1062 SC(negative_lookups_miss, V8.NegativeLookupsMiss) \
1063 SC(megamorphic_stub_cache_probes, V8.MegamorphicStubCacheProbes) \
1064 SC(megamorphic_stub_cache_misses, V8.MegamorphicStubCacheMisses) \
1065 SC(megamorphic_stub_cache_updates, V8.MegamorphicStubCacheUpdates) \
1066 SC(enum_cache_hits, V8.EnumCacheHits) \
1067 SC(enum_cache_misses, V8.EnumCacheMisses) \
1068 SC(fast_new_closure_total, V8.FastNewClosureTotal) \
1069 SC(string_add_runtime, V8.StringAddRuntime) \
1070 SC(string_add_native, V8.StringAddNative) \
1071 SC(string_add_runtime_ext_to_one_byte, V8.StringAddRuntimeExtToOneByte) \
1072 SC(sub_string_runtime, V8.SubStringRuntime) \
1073 SC(sub_string_native, V8.SubStringNative) \
1074 SC(string_compare_native, V8.StringCompareNative) \
1075 SC(string_compare_runtime, V8.StringCompareRuntime) \
1076 SC(regexp_entry_runtime, V8.RegExpEntryRuntime) \
1077 SC(regexp_entry_native, V8.RegExpEntryNative) \
1078 SC(number_to_string_native, V8.NumberToStringNative) \
1079 SC(number_to_string_runtime, V8.NumberToStringRuntime) \
1080 SC(math_exp_runtime, V8.MathExpRuntime) \
1081 SC(math_log_runtime, V8.MathLogRuntime) \
1082 SC(math_pow_runtime, V8.MathPowRuntime) \
1083 SC(stack_interrupts, V8.StackInterrupts) \
1084 SC(runtime_profiler_ticks, V8.RuntimeProfilerTicks) \
1085 SC(runtime_calls, V8.RuntimeCalls) \
1086 SC(bounds_checks_eliminated, V8.BoundsChecksEliminated) \
1087 SC(bounds_checks_hoisted, V8.BoundsChecksHoisted) \
1088 SC(soft_deopts_requested, V8.SoftDeoptsRequested) \
1089 SC(soft_deopts_inserted, V8.SoftDeoptsInserted) \
1090 SC(soft_deopts_executed, V8.SoftDeoptsExecuted) \
1091 /* Number of write barriers in generated code. */ \
1092 SC(write_barriers_dynamic, V8.WriteBarriersDynamic) \
1093 SC(write_barriers_static, V8.WriteBarriersStatic) \
1094 SC(new_space_bytes_available, V8.MemoryNewSpaceBytesAvailable) \
1095 SC(new_space_bytes_committed, V8.MemoryNewSpaceBytesCommitted) \
1096 SC(new_space_bytes_used, V8.MemoryNewSpaceBytesUsed) \
1097 SC(old_space_bytes_available, V8.MemoryOldSpaceBytesAvailable) \
1098 SC(old_space_bytes_committed, V8.MemoryOldSpaceBytesCommitted) \
1099 SC(old_space_bytes_used, V8.MemoryOldSpaceBytesUsed) \
1100 SC(code_space_bytes_available, V8.MemoryCodeSpaceBytesAvailable) \
1101 SC(code_space_bytes_committed, V8.MemoryCodeSpaceBytesCommitted) \
1102 SC(code_space_bytes_used, V8.MemoryCodeSpaceBytesUsed) \
1103 SC(map_space_bytes_available, V8.MemoryMapSpaceBytesAvailable) \
1104 SC(map_space_bytes_committed, V8.MemoryMapSpaceBytesCommitted) \
1105 SC(map_space_bytes_used, V8.MemoryMapSpaceBytesUsed) \
1106 SC(lo_space_bytes_available, V8.MemoryLoSpaceBytesAvailable) \
1107 SC(lo_space_bytes_committed, V8.MemoryLoSpaceBytesCommitted) \
1108 SC(lo_space_bytes_used, V8.MemoryLoSpaceBytesUsed) \
1109 SC(turbo_escape_allocs_replaced, V8.TurboEscapeAllocsReplaced) \
1110 SC(crankshaft_escape_allocs_replaced, V8.CrankshaftEscapeAllocsReplaced) \
1111 SC(turbo_escape_loads_replaced, V8.TurboEscapeLoadsReplaced) \
1112 SC(crankshaft_escape_loads_replaced, V8.CrankshaftEscapeLoadsReplaced) \
1113 /* Total code size (including metadata) of baseline code or bytecode. */ \
1114 SC(total_baseline_code_size, V8.TotalBaselineCodeSize) \
1115 /* Total count of functions compiled using the baseline compiler. */ \
1116 SC(total_baseline_compile_count, V8.TotalBaselineCompileCount) \
1117 SC(wasm_generated_code_size, V8.WasmGeneratedCodeBytes) \
1118 SC(wasm_reloc_size, V8.WasmRelocBytes)
1119
1120 // This file contains all the v8 counters that are in use.
1121 class Counters {
1122 public:
1123 #define HR(name, caption, min, max, num_buckets) \
1124 Histogram* name() { return &name##_; }
1125 HISTOGRAM_RANGE_LIST(HR)
1126 #undef HR
1127
1128 #define HT(name, caption, max, res) \
1129 HistogramTimer* name() { return &name##_; }
1130 HISTOGRAM_TIMER_LIST(HT)
1131 #undef HT
1132
1133 #define AHT(name, caption) \
1134 AggregatableHistogramTimer* name() { return &name##_; }
1135 AGGREGATABLE_HISTOGRAM_TIMER_LIST(AHT)
1136 #undef AHT
1137
1138 #define HP(name, caption) \
1139 Histogram* name() { return &name##_; }
1140 HISTOGRAM_PERCENTAGE_LIST(HP)
1141 #undef HP
1142
1143 #define HM(name, caption) \
1144 Histogram* name() { return &name##_; }
1145 HISTOGRAM_LEGACY_MEMORY_LIST(HM)
1146 HISTOGRAM_MEMORY_LIST(HM)
1147 #undef HM
1148
1149 #define HM(name, caption) \
1150 AggregatedMemoryHistogram<Histogram>* aggregated_##name() { \
1151 return &aggregated_##name##_; \
1152 }
1153 HISTOGRAM_MEMORY_LIST(HM)
1154 #undef HM
1155
1156 #define SC(name, caption) \
1157 StatsCounter* name() { return &name##_; }
1158 STATS_COUNTER_LIST_1(SC)
1159 STATS_COUNTER_LIST_2(SC)
1160 #undef SC
1161
1162 #define SC(name) \
1163 StatsCounter* count_of_##name() { return &count_of_##name##_; } \
1164 StatsCounter* size_of_##name() { return &size_of_##name##_; }
1165 INSTANCE_TYPE_LIST(SC)
1166 #undef SC
1167
1168 #define SC(name) \
1169 StatsCounter* count_of_CODE_TYPE_##name() \
1170 { return &count_of_CODE_TYPE_##name##_; } \
1171 StatsCounter* size_of_CODE_TYPE_##name() \
1172 { return &size_of_CODE_TYPE_##name##_; }
1173 CODE_KIND_LIST(SC)
1174 #undef SC
1175
1176 #define SC(name) \
1177 StatsCounter* count_of_FIXED_ARRAY_##name() \
1178 { return &count_of_FIXED_ARRAY_##name##_; } \
1179 StatsCounter* size_of_FIXED_ARRAY_##name() \
1180 { return &size_of_FIXED_ARRAY_##name##_; }
1181 FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(SC)
1182 #undef SC
1183
1184 #define SC(name) \
1185 StatsCounter* count_of_CODE_AGE_##name() \
1186 { return &count_of_CODE_AGE_##name##_; } \
1187 StatsCounter* size_of_CODE_AGE_##name() \
1188 { return &size_of_CODE_AGE_##name##_; }
1189 CODE_AGE_LIST_COMPLETE(SC)
1190 #undef SC
1191
1192 enum Id {
1193 #define RATE_ID(name, caption, max, res) k_##name,
1194 HISTOGRAM_TIMER_LIST(RATE_ID)
1195 #undef RATE_ID
1196 #define AGGREGATABLE_ID(name, caption) k_##name,
1197 AGGREGATABLE_HISTOGRAM_TIMER_LIST(AGGREGATABLE_ID)
1198 #undef AGGREGATABLE_ID
1199 #define PERCENTAGE_ID(name, caption) k_##name,
1200 HISTOGRAM_PERCENTAGE_LIST(PERCENTAGE_ID)
1201 #undef PERCENTAGE_ID
1202 #define MEMORY_ID(name, caption) k_##name,
1203 HISTOGRAM_LEGACY_MEMORY_LIST(MEMORY_ID)
1204 HISTOGRAM_MEMORY_LIST(MEMORY_ID)
1205 #undef MEMORY_ID
1206 #define COUNTER_ID(name, caption) k_##name,
1207 STATS_COUNTER_LIST_1(COUNTER_ID)
1208 STATS_COUNTER_LIST_2(COUNTER_ID)
1209 #undef COUNTER_ID
1210 #define COUNTER_ID(name) kCountOf##name, kSizeOf##name,
1211 INSTANCE_TYPE_LIST(COUNTER_ID)
1212 #undef COUNTER_ID
1213 #define COUNTER_ID(name) kCountOfCODE_TYPE_##name, \
1214 kSizeOfCODE_TYPE_##name,
1215 CODE_KIND_LIST(COUNTER_ID)
1216 #undef COUNTER_ID
1217 #define COUNTER_ID(name) kCountOfFIXED_ARRAY__##name, \
1218 kSizeOfFIXED_ARRAY__##name,
1219 FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(COUNTER_ID)
1220 #undef COUNTER_ID
1221 #define COUNTER_ID(name) kCountOfCODE_AGE__##name, \
1222 kSizeOfCODE_AGE__##name,
1223 CODE_AGE_LIST_COMPLETE(COUNTER_ID)
1224 #undef COUNTER_ID
1225 stats_counter_count
1226 };
1227
1228 void ResetCounters();
1229 void ResetHistograms();
runtime_call_stats()1230 RuntimeCallStats* runtime_call_stats() { return &runtime_call_stats_; }
1231
1232 private:
1233 #define HR(name, caption, min, max, num_buckets) Histogram name##_;
1234 HISTOGRAM_RANGE_LIST(HR)
1235 #undef HR
1236
1237 #define HT(name, caption, max, res) HistogramTimer name##_;
1238 HISTOGRAM_TIMER_LIST(HT)
1239 #undef HT
1240
1241 #define AHT(name, caption) \
1242 AggregatableHistogramTimer name##_;
1243 AGGREGATABLE_HISTOGRAM_TIMER_LIST(AHT)
1244 #undef AHT
1245
1246 #define HP(name, caption) \
1247 Histogram name##_;
1248 HISTOGRAM_PERCENTAGE_LIST(HP)
1249 #undef HP
1250
1251 #define HM(name, caption) \
1252 Histogram name##_;
1253 HISTOGRAM_LEGACY_MEMORY_LIST(HM)
1254 HISTOGRAM_MEMORY_LIST(HM)
1255 #undef HM
1256
1257 #define HM(name, caption) \
1258 AggregatedMemoryHistogram<Histogram> aggregated_##name##_;
1259 HISTOGRAM_MEMORY_LIST(HM)
1260 #undef HM
1261
1262 #define SC(name, caption) \
1263 StatsCounter name##_;
1264 STATS_COUNTER_LIST_1(SC)
1265 STATS_COUNTER_LIST_2(SC)
1266 #undef SC
1267
1268 #define SC(name) \
1269 StatsCounter size_of_##name##_; \
1270 StatsCounter count_of_##name##_;
1271 INSTANCE_TYPE_LIST(SC)
1272 #undef SC
1273
1274 #define SC(name) \
1275 StatsCounter size_of_CODE_TYPE_##name##_; \
1276 StatsCounter count_of_CODE_TYPE_##name##_;
1277 CODE_KIND_LIST(SC)
1278 #undef SC
1279
1280 #define SC(name) \
1281 StatsCounter size_of_FIXED_ARRAY_##name##_; \
1282 StatsCounter count_of_FIXED_ARRAY_##name##_;
1283 FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(SC)
1284 #undef SC
1285
1286 #define SC(name) \
1287 StatsCounter size_of_CODE_AGE_##name##_; \
1288 StatsCounter count_of_CODE_AGE_##name##_;
1289 CODE_AGE_LIST_COMPLETE(SC)
1290 #undef SC
1291
1292 RuntimeCallStats runtime_call_stats_;
1293
1294 friend class Isolate;
1295
1296 explicit Counters(Isolate* isolate);
1297
1298 DISALLOW_IMPLICIT_CONSTRUCTORS(Counters);
1299 };
1300
1301 // A RuntimeCallTimerScopes wraps around a RuntimeCallTimer to measure the
1302 // the time of C++ scope.
1303 class RuntimeCallTimerScope {
1304 public:
1305 inline RuntimeCallTimerScope(Isolate* isolate,
1306 RuntimeCallStats::CounterId counter_id);
1307 // This constructor is here just to avoid calling GetIsolate() when the
1308 // stats are disabled and the isolate is not directly available.
1309 inline RuntimeCallTimerScope(HeapObject* heap_object,
1310 RuntimeCallStats::CounterId counter_id);
1311 inline RuntimeCallTimerScope(RuntimeCallStats* stats,
1312 RuntimeCallStats::CounterId counter_id);
1313
~RuntimeCallTimerScope()1314 inline ~RuntimeCallTimerScope() {
1315 if (V8_UNLIKELY(stats_ != nullptr)) {
1316 RuntimeCallStats::Leave(stats_, &timer_);
1317 }
1318 }
1319
1320 private:
Initialize(RuntimeCallStats * stats,RuntimeCallStats::CounterId counter_id)1321 V8_INLINE void Initialize(RuntimeCallStats* stats,
1322 RuntimeCallStats::CounterId counter_id) {
1323 stats_ = stats;
1324 RuntimeCallStats::Enter(stats_, &timer_, counter_id);
1325 }
1326
1327 RuntimeCallStats* stats_ = nullptr;
1328 RuntimeCallTimer timer_;
1329 };
1330
1331 } // namespace internal
1332 } // namespace v8
1333
1334 #endif // V8_COUNTERS_H_
1335