| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/metrics/stats_counters.h" | |
| 6 | |
| 7 namespace base { | |
| 8 | |
| 9 StatsCounter::StatsCounter(const std::string& name) | |
| 10 : counter_id_(-1) { | |
| 11 // We prepend the name with 'c:' to indicate that it is a counter. | |
| 12 if (StatsTable::current()) { | |
| 13 // TODO(mbelshe): name_ construction is racy and it may corrupt memory for | |
| 14 // static. | |
| 15 name_ = "c:"; | |
| 16 name_.append(name); | |
| 17 } | |
| 18 } | |
| 19 | |
| 20 StatsCounter::~StatsCounter() { | |
| 21 } | |
| 22 | |
| 23 void StatsCounter::Set(int value) { | |
| 24 int* loc = GetPtr(); | |
| 25 if (loc) | |
| 26 *loc = value; | |
| 27 } | |
| 28 | |
| 29 void StatsCounter::Add(int value) { | |
| 30 int* loc = GetPtr(); | |
| 31 if (loc) | |
| 32 (*loc) += value; | |
| 33 } | |
| 34 | |
| 35 StatsCounter::StatsCounter() | |
| 36 : counter_id_(-1) { | |
| 37 } | |
| 38 | |
| 39 int* StatsCounter::GetPtr() { | |
| 40 StatsTable* table = StatsTable::current(); | |
| 41 if (!table) | |
| 42 return NULL; | |
| 43 | |
| 44 // If counter_id_ is -1, then we haven't looked it up yet. | |
| 45 if (counter_id_ == -1) { | |
| 46 counter_id_ = table->FindCounter(name_); | |
| 47 if (table->GetSlot() == 0) { | |
| 48 if (!table->RegisterThread(std::string())) { | |
| 49 // There is no room for this thread. This thread | |
| 50 // cannot use counters. | |
| 51 counter_id_ = 0; | |
| 52 return NULL; | |
| 53 } | |
| 54 } | |
| 55 } | |
| 56 | |
| 57 // If counter_id_ is > 0, then we have a valid counter. | |
| 58 if (counter_id_ > 0) | |
| 59 return table->GetLocation(counter_id_, table->GetSlot()); | |
| 60 | |
| 61 // counter_id_ was zero, which means the table is full. | |
| 62 return NULL; | |
| 63 } | |
| 64 | |
| 65 | |
| 66 StatsCounterTimer::StatsCounterTimer(const std::string& name) { | |
| 67 // we prepend the name with 't:' to indicate that it is a timer. | |
| 68 if (StatsTable::current()) { | |
| 69 // TODO(mbelshe): name_ construction is racy and it may corrupt memory for | |
| 70 // static. | |
| 71 name_ = "t:"; | |
| 72 name_.append(name); | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 StatsCounterTimer::~StatsCounterTimer() { | |
| 77 } | |
| 78 | |
| 79 void StatsCounterTimer::Start() { | |
| 80 if (!Enabled()) | |
| 81 return; | |
| 82 start_time_ = TimeTicks::Now(); | |
| 83 stop_time_ = TimeTicks(); | |
| 84 } | |
| 85 | |
| 86 // Stop the timer and record the results. | |
| 87 void StatsCounterTimer::Stop() { | |
| 88 if (!Enabled() || !Running()) | |
| 89 return; | |
| 90 stop_time_ = TimeTicks::Now(); | |
| 91 Record(); | |
| 92 } | |
| 93 | |
| 94 // Returns true if the timer is running. | |
| 95 bool StatsCounterTimer::Running() { | |
| 96 return Enabled() && !start_time_.is_null() && stop_time_.is_null(); | |
| 97 } | |
| 98 | |
| 99 // Accept a TimeDelta to increment. | |
| 100 void StatsCounterTimer::AddTime(TimeDelta time) { | |
| 101 Add(static_cast<int>(time.InMilliseconds())); | |
| 102 } | |
| 103 | |
| 104 void StatsCounterTimer::Record() { | |
| 105 AddTime(stop_time_ - start_time_); | |
| 106 } | |
| 107 | |
| 108 | |
| 109 StatsRate::StatsRate(const std::string& name) | |
| 110 : StatsCounterTimer(name), | |
| 111 counter_(name), | |
| 112 largest_add_(std::string(" ").append(name).append("MAX")) { | |
| 113 } | |
| 114 | |
| 115 StatsRate::~StatsRate() { | |
| 116 } | |
| 117 | |
| 118 void StatsRate::Add(int value) { | |
| 119 counter_.Increment(); | |
| 120 StatsCounterTimer::Add(value); | |
| 121 if (value > largest_add_.value()) | |
| 122 largest_add_.Set(value); | |
| 123 } | |
| 124 | |
| 125 } // namespace base | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 935333002:
Update from https://crrev.com/316786 (Closed)
Base URL: git@github.com:domokit/mojo.git@master