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Side by Side Diff: src/heap/gc-tracer.h

Issue 492763002: Move idle notification handling to GCIdleTimeHandler. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Casts Created 6 years, 4 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef V8_HEAP_GC_TRACER_H_ 5 #ifndef V8_HEAP_GC_TRACER_H_
6 #define V8_HEAP_GC_TRACER_H_ 6 #define V8_HEAP_GC_TRACER_H_
7 7
8 #include "src/base/platform/platform.h"
9
8 namespace v8 { 10 namespace v8 {
9 namespace internal { 11 namespace internal {
10 12
11 // A simple ring buffer class with maximum size known at compile time. 13 // A simple ring buffer class with maximum size known at compile time.
12 // The class only implements the functionality required in GCTracer. 14 // The class only implements the functionality required in GCTracer.
13 template <typename T, size_t MAX_SIZE> 15 template <typename T, size_t MAX_SIZE>
14 class RingBuffer { 16 class RingBuffer {
15 public: 17 public:
16 class const_iterator { 18 class const_iterator {
17 public: 19 public:
(...skipping 56 matching lines...) Expand 10 before | Expand all | Expand 10 after
74 size_t begin_; 76 size_t begin_;
75 size_t end_; 77 size_t end_;
76 78
77 DISALLOW_COPY_AND_ASSIGN(RingBuffer); 79 DISALLOW_COPY_AND_ASSIGN(RingBuffer);
78 }; 80 };
79 81
80 82
81 // GCTracer collects and prints ONE line after each garbage collector 83 // GCTracer collects and prints ONE line after each garbage collector
82 // invocation IFF --trace_gc is used. 84 // invocation IFF --trace_gc is used.
83 // TODO(ernstm): Unit tests. 85 // TODO(ernstm): Unit tests.
84 class GCTracer BASE_EMBEDDED { 86 class GCTracer {
85 public: 87 public:
86 class Scope BASE_EMBEDDED { 88 class Scope {
87 public: 89 public:
88 enum ScopeId { 90 enum ScopeId {
89 EXTERNAL, 91 EXTERNAL,
90 MC_MARK, 92 MC_MARK,
91 MC_SWEEP, 93 MC_SWEEP,
92 MC_SWEEP_NEWSPACE, 94 MC_SWEEP_NEWSPACE,
93 MC_SWEEP_OLDSPACE, 95 MC_SWEEP_OLDSPACE,
94 MC_SWEEP_CODE, 96 MC_SWEEP_CODE,
95 MC_SWEEP_CELL, 97 MC_SWEEP_CELL,
96 MC_SWEEP_MAP, 98 MC_SWEEP_MAP,
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284 double MaxIncrementalMarkingDuration() const; 286 double MaxIncrementalMarkingDuration() const;
285 287
286 // Compute the average incremental marking speed in bytes/millisecond. 288 // Compute the average incremental marking speed in bytes/millisecond.
287 // Returns 0 if no events have been recorded. 289 // Returns 0 if no events have been recorded.
288 intptr_t IncrementalMarkingSpeedInBytesPerMillisecond() const; 290 intptr_t IncrementalMarkingSpeedInBytesPerMillisecond() const;
289 291
290 // Compute the average scavenge speed in bytes/millisecond. 292 // Compute the average scavenge speed in bytes/millisecond.
291 // Returns 0 if no events have been recorded. 293 // Returns 0 if no events have been recorded.
292 intptr_t ScavengeSpeedInBytesPerMillisecond() const; 294 intptr_t ScavengeSpeedInBytesPerMillisecond() const;
293 295
296 // Compute the max mark-sweep speed in bytes/millisecond.
297 // Returns 0 if no events have been recorded.
298 intptr_t MarkCompactSpeedInBytesPerMillisecond() const;
299
294 private: 300 private:
295 // Print one detailed trace line in name=value format. 301 // Print one detailed trace line in name=value format.
296 // TODO(ernstm): Move to Heap. 302 // TODO(ernstm): Move to Heap.
297 void PrintNVP() const; 303 void PrintNVP() const;
298 304
299 // Print one trace line. 305 // Print one trace line.
300 // TODO(ernstm): Move to Heap. 306 // TODO(ernstm): Move to Heap.
301 void Print() const; 307 void Print() const;
302 308
303 // Compute the mean duration of the events in the given ring buffer. 309 // Compute the mean duration of the events in the given ring buffer.
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354 // of the initial atomic sweeping pause. Make sure that it accumulates 360 // of the initial atomic sweeping pause. Make sure that it accumulates
355 // all sweeping operations performed on the main thread. 361 // all sweeping operations performed on the main thread.
356 double cumulative_sweeping_duration_; 362 double cumulative_sweeping_duration_;
357 363
358 DISALLOW_COPY_AND_ASSIGN(GCTracer); 364 DISALLOW_COPY_AND_ASSIGN(GCTracer);
359 }; 365 };
360 } 366 }
361 } // namespace v8::internal 367 } // namespace v8::internal
362 368
363 #endif // V8_HEAP_GC_TRACER_H_ 369 #endif // V8_HEAP_GC_TRACER_H_
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