asiva@google.com
6d313d3797
R=johnmccutchan@google.com, turnidge@google.com Review URL: https://codereview.chromium.org//137483010 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@32930 260f80e4-7a28-3924-810f-c04153c831b5
127 lines
3.4 KiB
C++
127 lines
3.4 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef VM_TIMER_H_
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#define VM_TIMER_H_
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#include "vm/allocation.h"
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#include "vm/flags.h"
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#include "vm/os.h"
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namespace dart {
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class JSONObject;
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// Timer class allows timing of specific operations in the VM.
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class Timer : public ValueObject {
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public:
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Timer(bool report, const char* message)
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: start_(0), stop_(0), total_(0),
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report_(report), running_(false), message_(message) {}
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~Timer() {}
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// Start timer.
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void Start() {
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start_ = OS::GetCurrentTimeMicros();
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running_ = true;
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}
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// Stop timer.
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void Stop() {
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ASSERT(start_ != 0);
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ASSERT(running());
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stop_ = OS::GetCurrentTimeMicros();
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total_ += ElapsedMicros();
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running_ = false;
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}
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// Get total cummulative elapsed time in micros.
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int64_t TotalElapsedTime() const {
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int64_t result = total_;
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if (running_) {
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int64_t now = OS::GetCurrentTimeMicros();
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result += (now - start_);
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}
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return result;
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}
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void Reset() {
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start_ = 0;
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stop_ = 0;
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total_ = 0;
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running_ = false;
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}
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// Accessors.
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bool report() const { return report_; }
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bool running() const { return running_; }
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const char* message() const { return message_; }
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private:
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int64_t ElapsedMicros() const {
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ASSERT(start_ != 0);
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ASSERT(stop_ != 0);
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return stop_ - start_;
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}
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int64_t start_;
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int64_t stop_;
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int64_t total_;
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bool report_;
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bool running_;
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const char* message_;
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DISALLOW_COPY_AND_ASSIGN(Timer);
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};
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// List of per isolate timers.
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#define TIMER_LIST(V) \
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V(time_script_loading, "Script Loading") \
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V(time_creating_snapshot, "Snapshot Creation") \
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V(time_isolate_initialization, "Isolate initialization") \
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V(time_compilation, "Function compilation") \
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V(time_bootstrap, "Bootstrap of core classes") \
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V(time_dart_execution, "Dart execution") \
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V(time_native_execution, "Native code execution") \
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V(time_total_runtime, "Total runtime for isolate") \
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// Maintains a list of timers per isolate.
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class TimerList : public ValueObject {
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public:
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TimerList();
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~TimerList() {}
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// Accessors.
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#define TIMER_FIELD_ACCESSOR(name, msg) \
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Timer& name() { return name##_; }
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TIMER_LIST(TIMER_FIELD_ACCESSOR)
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#undef TIMER_FIELD_ACCESSOR
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void ReportTimers();
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void ReportTimerState(const char* prefix);
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void PrintTimersToJSONProperty(JSONObject* jsobj);
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private:
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#define TIMER_FIELD(name, msg) Timer name##_;
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TIMER_LIST(TIMER_FIELD)
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#undef TIMER_FIELD
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bool padding_;
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DISALLOW_COPY_AND_ASSIGN(TimerList);
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};
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// Timer Usage.
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#define START_TIMER(isolate, name) \
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isolate->timer_list().name().Start();
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#define STOP_TIMER(isolate, name) \
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isolate->timer_list().name().Stop();
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#define TIMER_STATE(isolate, prefix) \
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isolate->timer_list().ReportTimerState(prefix);
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} // namespace dart
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#endif // VM_TIMER_H_
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