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// Copyright 2007-2008 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);
}
// Start the timer.
void HistogramTimer::Start() {
if (GetHistogram() != NULL) {
stop_time_ = 0;
start_time_ = OS::Ticks();
}
}
// Stop the timer and record the results.
void HistogramTimer::Stop() {
if (histogram_ != NULL) {
stop_time_ = OS::Ticks();
// Compute the delta between start and stop, in milliseconds.
int milliseconds = static_cast<int>(stop_time_ - start_time_) / 1000;
Isolate::Current()->stats_table()->
AddHistogramSample(histogram_, milliseconds);
}
}
void* HistogramTimer::CreateHistogram() const {
return Isolate::Current()->stats_table()->
CreateHistogram(name_, 0, 10000, 50);
}
} } // namespace v8::internal
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