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Issue 23690003: Revert "Add Chromium-style TimeDelta, Time and TimeTicks classes, and a new ElapsedTimer class." (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 3 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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238 238
239 // A HistogramTimer allows distributions of results to be created. 239 // A HistogramTimer allows distributions of results to be created.
240 class HistogramTimer : public Histogram { 240 class HistogramTimer : public Histogram {
241 public: 241 public:
242 HistogramTimer() { } 242 HistogramTimer() { }
243 HistogramTimer(const char* name, 243 HistogramTimer(const char* name,
244 int min, 244 int min,
245 int max, 245 int max,
246 int num_buckets, 246 int num_buckets,
247 Isolate* isolate) 247 Isolate* isolate)
248 : Histogram(name, min, max, num_buckets, isolate) {} 248 : Histogram(name, min, max, num_buckets, isolate),
249 start_time_(0),
250 stop_time_(0) { }
249 251
250 // Start the timer. 252 // Start the timer.
251 void Start(); 253 void Start();
252 254
253 // Stop the timer and record the results. 255 // Stop the timer and record the results.
254 void Stop(); 256 void Stop();
255 257
256 // Returns true if the timer is running. 258 // Returns true if the timer is running.
257 bool Running() { 259 bool Running() {
258 return Enabled() && timer_.IsStarted(); 260 return Enabled() && (start_time_ != 0) && (stop_time_ == 0);
259 } 261 }
260 262
261 private: 263 private:
262 ElapsedTimer timer_; 264 int64_t start_time_;
265 int64_t stop_time_;
263 }; 266 };
264 267
265 // Helper class for scoping a HistogramTimer. 268 // Helper class for scoping a HistogramTimer.
266 class HistogramTimerScope BASE_EMBEDDED { 269 class HistogramTimerScope BASE_EMBEDDED {
267 public: 270 public:
268 explicit HistogramTimerScope(HistogramTimer* timer) : 271 explicit HistogramTimerScope(HistogramTimer* timer) :
269 timer_(timer) { 272 timer_(timer) {
270 timer_->Start(); 273 timer_->Start();
271 } 274 }
272 ~HistogramTimerScope() { 275 ~HistogramTimerScope() {
273 timer_->Stop(); 276 timer_->Stop();
274 } 277 }
275 private: 278 private:
276 HistogramTimer* timer_; 279 HistogramTimer* timer_;
277 }; 280 };
278 281
279 282
280 } } // namespace v8::internal 283 } } // namespace v8::internal
281 284
282 #endif // V8_COUNTERS_H_ 285 #endif // V8_COUNTERS_H_
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