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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/metrics/leak_detector_controller.h"
#include <algorithm>
#include "base/logging.h"
namespace metrics {
namespace {
// Default parameters for LeakDetector.
const float kSamplingRate = 1.0f / 256;
const int kMaxStackDepth = 4;
const uint64_t kAnalysisIntervalBytes = 32 * 1024 * 1024;
const int kSizeSuspicionThreshold = 4;
const int kCallStackSuspicionThreshold = 4;
} // namespace
LeakDetectorController::LeakDetectorController() {
LeakDetector* detector = LeakDetector::GetInstance();
detector->AddObserver(this);
detector->Init(kSamplingRate, kMaxStackDepth, kAnalysisIntervalBytes,
kSizeSuspicionThreshold, kCallStackSuspicionThreshold);
}
LeakDetectorController::~LeakDetectorController() {
DCHECK(thread_checker_.CalledOnValidThread());
LeakDetector::GetInstance()->RemoveObserver(this);
}
void LeakDetectorController::OnLeakFound(
const LeakDetector::LeakReport& report) {
DCHECK(thread_checker_.CalledOnValidThread());
stored_reports_.push_back(MemoryLeakReportProto());
MemoryLeakReportProto* proto = &stored_reports_.back();
// Copy the contents of the report to the protobuf.
proto->set_size_bytes(report.alloc_size_bytes);
proto->mutable_call_stack()->Reserve(report.call_stack.size());
for (uintptr_t call_stack_entry : report.call_stack)
proto->mutable_call_stack()->Add(call_stack_entry);
// Store the LeakDetector parameters in the protobuf.
proto->set_sampling_rate(kSamplingRate);
proto->set_max_stack_depth(kMaxStackDepth);
proto->set_analysis_interval_bytes(kAnalysisIntervalBytes);
proto->set_size_suspicion_threshold(kSizeSuspicionThreshold);
proto->set_call_stack_suspicion_threshold(kCallStackSuspicionThreshold);
}
void LeakDetectorController::GetLeakReports(
std::vector<MemoryLeakReportProto>* reports) {
DCHECK(thread_checker_.CalledOnValidThread());
*reports = std::move(stored_reports_);
}
} // namespace metrics
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