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

Issue 1292583004: [heap] Fix comment in tracer. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 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" 8 #include "src/base/platform/platform.h"
9 #include "src/globals.h" 9 #include "src/globals.h"
10 10
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412 // last time_ms milliseconds. 412 // last time_ms milliseconds.
413 // Returns 0 if no allocation events have been recorded. 413 // Returns 0 if no allocation events have been recorded.
414 size_t OldGenerationAllocationThroughputInBytesPerMillisecond( 414 size_t OldGenerationAllocationThroughputInBytesPerMillisecond(
415 double time_ms = 0) const; 415 double time_ms = 0) const;
416 416
417 // Allocation throughput in heap in bytes/millisecond in the last time_ms 417 // Allocation throughput in heap in bytes/millisecond in the last time_ms
418 // milliseconds. 418 // milliseconds.
419 // Returns 0 if no allocation events have been recorded. 419 // Returns 0 if no allocation events have been recorded.
420 size_t AllocationThroughputInBytesPerMillisecond(double time_ms) const; 420 size_t AllocationThroughputInBytesPerMillisecond(double time_ms) const;
421 421
422 // Allocation throughput in heap in bytes/milliseconds in 422 // Allocation throughput in heap in bytes/milliseconds in the last
423 // the last five seconds. 423 // kThroughputTimeFrameMs seconds.
424 // Returns 0 if no allocation events have been recorded. 424 // Returns 0 if no allocation events have been recorded.
425 size_t CurrentAllocationThroughputInBytesPerMillisecond() const; 425 size_t CurrentAllocationThroughputInBytesPerMillisecond() const;
426 426
427 // Allocation throughput in old generation in bytes/milliseconds in 427 // Allocation throughput in old generation in bytes/milliseconds in the last
428 // the last five seconds. 428 // kThroughputTimeFrameMs seconds.
429 // Returns 0 if no allocation events have been recorded. 429 // Returns 0 if no allocation events have been recorded.
430 size_t CurrentOldGenerationAllocationThroughputInBytesPerMillisecond() const; 430 size_t CurrentOldGenerationAllocationThroughputInBytesPerMillisecond() const;
431 431
432 // Computes the context disposal rate in milliseconds. It takes the time 432 // Computes the context disposal rate in milliseconds. It takes the time
433 // frame of the first recorded context disposal to the current time and 433 // frame of the first recorded context disposal to the current time and
434 // divides it by the number of recorded events. 434 // divides it by the number of recorded events.
435 // Returns 0 if no events have been recorded. 435 // Returns 0 if no events have been recorded.
436 double ContextDisposalRateInMilliseconds() const; 436 double ContextDisposalRateInMilliseconds() const;
437 437
438 // Computes the average survival ratio based on the last recorded survival 438 // Computes the average survival ratio based on the last recorded survival
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551 551
552 // Counts how many tracers were started without stopping. 552 // Counts how many tracers were started without stopping.
553 int start_counter_; 553 int start_counter_;
554 554
555 DISALLOW_COPY_AND_ASSIGN(GCTracer); 555 DISALLOW_COPY_AND_ASSIGN(GCTracer);
556 }; 556 };
557 } 557 }
558 } // namespace v8::internal 558 } // namespace v8::internal
559 559
560 #endif // V8_HEAP_GC_TRACER_H_ 560 #endif // V8_HEAP_GC_TRACER_H_
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