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// Copyright 2017 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 "components/metrics/metrics_scheduler.h"
#include "build/build_config.h"
namespace metrics {
namespace {
// The delay, in seconds, after startup before sending the first log message.
#if defined(OS_ANDROID) || defined(OS_IOS)
// Sessions are more likely to be short on a mobile device, so handle the
// initial log quickly.
const int kInitialIntervalSeconds = 15;
#else
const int kInitialIntervalSeconds = 60;
#endif
} // namespace
MetricsScheduler::MetricsScheduler(const base::RepeatingClosure& task_callback,
bool fast_startup_for_testing)
: task_callback_(task_callback),
interval_(base::TimeDelta::FromSeconds(
fast_startup_for_testing ? 0 : kInitialIntervalSeconds)),
running_(false),
callback_pending_(false) {}
MetricsScheduler::~MetricsScheduler() {}
void MetricsScheduler::Start() {
running_ = true;
ScheduleNextTask();
}
void MetricsScheduler::Stop() {
running_ = false;
if (timer_.IsRunning())
timer_.Stop();
}
void MetricsScheduler::TaskDone(base::TimeDelta next_interval) {
DCHECK(callback_pending_);
callback_pending_ = false;
interval_ = next_interval;
if (running_)
ScheduleNextTask();
}
void MetricsScheduler::TriggerTask() {
// This can happen in tests which set a very small timer interval.
if (callback_pending_)
return;
callback_pending_ = true;
task_callback_.Run();
}
void MetricsScheduler::ScheduleNextTask() {
DCHECK(running_);
if (timer_.IsRunning() || callback_pending_)
return;
timer_.Start(FROM_HERE, interval_, this, &MetricsScheduler::TriggerTask);
}
} // namespace metrics
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