| // Copyright 2012 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "v8.h" |
| |
| #include "counters.h" |
| #include "isolate.h" |
| #include "platform.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| StatsTable::StatsTable() |
| : lookup_function_(NULL), |
| create_histogram_function_(NULL), |
| add_histogram_sample_function_(NULL) {} |
| |
| |
| int* StatsCounter::FindLocationInStatsTable() const { |
| return Isolate::Current()->stats_table()->FindLocation(name_); |
| } |
| |
| |
| // Start the timer. |
| void StatsCounterTimer::Start() { |
| if (!counter_.Enabled()) |
| return; |
| stop_time_ = 0; |
| start_time_ = OS::Ticks(); |
| } |
| |
| // Stop the timer and record the results. |
| void StatsCounterTimer::Stop() { |
| if (!counter_.Enabled()) |
| return; |
| stop_time_ = OS::Ticks(); |
| |
| // Compute the delta between start and stop, in milliseconds. |
| int milliseconds = static_cast<int>(stop_time_ - start_time_) / 1000; |
| counter_.Increment(milliseconds); |
| } |
| |
| void Histogram::AddSample(int sample) { |
| if (Enabled()) { |
| Isolate::Current()->stats_table()->AddHistogramSample(histogram_, sample); |
| } |
| } |
| |
| void* Histogram::CreateHistogram() const { |
| return Isolate::Current()->stats_table()-> |
| CreateHistogram(name_, min_, max_, num_buckets_); |
| } |
| |
| // Start the timer. |
| void HistogramTimer::Start() { |
| if (histogram_.Enabled() || FLAG_log_timer_events) { |
| stop_time_ = 0; |
| start_time_ = OS::Ticks(); |
| } |
| } |
| |
| // Stop the timer and record the results. |
| void HistogramTimer::Stop() { |
| if (histogram_.Enabled()) { |
| stop_time_ = OS::Ticks(); |
| // Compute the delta between start and stop, in milliseconds. |
| int milliseconds = static_cast<int>(stop_time_ - start_time_) / 1000; |
| histogram_.AddSample(milliseconds); |
| } |
| if (FLAG_log_timer_events) { |
| LOG(Isolate::Current(), |
| TimerEvent(histogram_.name_, start_time_, OS::Ticks())); |
| } |
| } |
| |
| } } // namespace v8::internal |