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| 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef RUNTIME_VM_TIMER_H_ | 5 #ifndef RUNTIME_VM_TIMER_H_ |
| 6 #define RUNTIME_VM_TIMER_H_ | 6 #define RUNTIME_VM_TIMER_H_ |
| 7 | 7 |
| 8 #include "platform/utils.h" | 8 #include "platform/utils.h" |
| 9 #include "vm/allocation.h" | 9 #include "vm/allocation.h" |
| 10 #include "vm/atomic.h" | 10 #include "vm/atomic.h" |
| 11 #include "vm/flags.h" | 11 #include "vm/flags.h" |
| 12 #include "vm/os.h" | 12 #include "vm/os.h" |
| 13 | 13 |
| 14 namespace dart { | 14 namespace dart { |
| 15 | 15 |
| 16 // Timer class allows timing of specific operations in the VM. | 16 // Timer class allows timing of specific operations in the VM. |
| 17 class Timer : public ValueObject { | 17 class Timer : public ValueObject { |
| 18 public: | 18 public: |
| 19 Timer(bool report, const char* message) | 19 Timer(bool report, const char* message) : report_(report), message_(message) { |
| 20 : report_(report), message_(message) { | |
| 21 Reset(); | 20 Reset(); |
| 22 } | 21 } |
| 23 ~Timer() {} | 22 ~Timer() {} |
| 24 | 23 |
| 25 // Start timer. | 24 // Start timer. |
| 26 void Start() { | 25 void Start() { |
| 27 start_ = OS::GetCurrentTimeMicros(); | 26 start_ = OS::GetCurrentTimeMicros(); |
| 28 running_ = true; | 27 running_ = true; |
| 29 } | 28 } |
| 30 | 29 |
| (...skipping 31 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 62 void Reset() { | 61 void Reset() { |
| 63 start_ = 0; | 62 start_ = 0; |
| 64 stop_ = 0; | 63 stop_ = 0; |
| 65 total_ = 0; | 64 total_ = 0; |
| 66 max_contiguous_ = 0; | 65 max_contiguous_ = 0; |
| 67 running_ = false; | 66 running_ = false; |
| 68 } | 67 } |
| 69 | 68 |
| 70 bool IsReset() const { | 69 bool IsReset() const { |
| 71 return (start_ == 0) && (stop_ == 0) && (total_ == 0) && | 70 return (start_ == 0) && (stop_ == 0) && (total_ == 0) && |
| 72 (max_contiguous_ == 0) && !running_; | 71 (max_contiguous_ == 0) && !running_; |
| 73 } | 72 } |
| 74 | 73 |
| 75 void AddTotal(const Timer& other) { | 74 void AddTotal(const Timer& other) { |
| 76 AtomicOperations::IncrementInt64By(&total_, other.total_); | 75 AtomicOperations::IncrementInt64By(&total_, other.total_); |
| 77 } | 76 } |
| 78 | 77 |
| 79 // Accessors. | 78 // Accessors. |
| 80 bool report() const { return report_; } | 79 bool report() const { return report_; } |
| 81 bool running() const { return running_; } | 80 bool running() const { return running_; } |
| 82 const char* message() const { return message_; } | 81 const char* message() const { return message_; } |
| (...skipping 21 matching lines...) Expand all Loading... |
| 104 // It is used as follows: | 103 // It is used as follows: |
| 105 // { | 104 // { |
| 106 // TimerScope timer(FLAG_name_of_flag, timer, isolate); | 105 // TimerScope timer(FLAG_name_of_flag, timer, isolate); |
| 107 // ..... | 106 // ..... |
| 108 // code that needs to be timed. | 107 // code that needs to be timed. |
| 109 // .... | 108 // .... |
| 110 // } | 109 // } |
| 111 class TimerScope : public StackResource { | 110 class TimerScope : public StackResource { |
| 112 public: | 111 public: |
| 113 TimerScope(bool flag, Timer* timer, Thread* thread = NULL) | 112 TimerScope(bool flag, Timer* timer, Thread* thread = NULL) |
| 114 : StackResource(thread), | 113 : StackResource(thread), nested_(false), timer_(flag ? timer : NULL) { |
| 115 nested_(false), | |
| 116 timer_(flag ? timer : NULL) { | |
| 117 Init(); | 114 Init(); |
| 118 } | 115 } |
| 119 | 116 |
| 120 void Init() { | 117 void Init() { |
| 121 if (timer_ != NULL) { | 118 if (timer_ != NULL) { |
| 122 if (!timer_->running()) { | 119 if (!timer_->running()) { |
| 123 timer_->Start(); | 120 timer_->Start(); |
| 124 } else { | 121 } else { |
| 125 nested_ = true; | 122 nested_ = true; |
| 126 } | 123 } |
| (...skipping 12 matching lines...) Expand all Loading... |
| 139 Timer* const timer_; | 136 Timer* const timer_; |
| 140 | 137 |
| 141 DISALLOW_ALLOCATION(); | 138 DISALLOW_ALLOCATION(); |
| 142 DISALLOW_COPY_AND_ASSIGN(TimerScope); | 139 DISALLOW_COPY_AND_ASSIGN(TimerScope); |
| 143 }; | 140 }; |
| 144 | 141 |
| 145 | 142 |
| 146 class PauseTimerScope : public StackResource { | 143 class PauseTimerScope : public StackResource { |
| 147 public: | 144 public: |
| 148 PauseTimerScope(bool flag, Timer* timer, Thread* thread = NULL) | 145 PauseTimerScope(bool flag, Timer* timer, Thread* thread = NULL) |
| 149 : StackResource(thread), | 146 : StackResource(thread), nested_(false), timer_(flag ? timer : NULL) { |
| 150 nested_(false), | |
| 151 timer_(flag ? timer : NULL) { | |
| 152 if (timer_) { | 147 if (timer_) { |
| 153 if (timer_->running()) { | 148 if (timer_->running()) { |
| 154 timer_->Stop(); | 149 timer_->Stop(); |
| 155 } else { | 150 } else { |
| 156 nested_ = true; | 151 nested_ = true; |
| 157 } | 152 } |
| 158 } | 153 } |
| 159 } | 154 } |
| 160 ~PauseTimerScope() { | 155 ~PauseTimerScope() { |
| 161 if (timer_) { | 156 if (timer_) { |
| 162 if (!nested_) { | 157 if (!nested_) { |
| 163 timer_->Start(); | 158 timer_->Start(); |
| 164 } | 159 } |
| 165 } | 160 } |
| 166 } | 161 } |
| 167 | 162 |
| 168 private: | 163 private: |
| 169 bool nested_; | 164 bool nested_; |
| 170 Timer* const timer_; | 165 Timer* const timer_; |
| 171 | 166 |
| 172 DISALLOW_ALLOCATION(); | 167 DISALLOW_ALLOCATION(); |
| 173 DISALLOW_COPY_AND_ASSIGN(PauseTimerScope); | 168 DISALLOW_COPY_AND_ASSIGN(PauseTimerScope); |
| 174 }; | 169 }; |
| 175 | 170 |
| 176 | 171 |
| 177 | |
| 178 } // namespace dart | 172 } // namespace dart |
| 179 | 173 |
| 180 #endif // RUNTIME_VM_TIMER_H_ | 174 #endif // RUNTIME_VM_TIMER_H_ |
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