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// Copyright 2015 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/task_management/sampling/task_group_sampler.h"
#include "base/bind.h"
#include "base/callback.h"
#include "build/build_config.h"
#include "chrome/browser/task_management/task_manager_observer.h"
#include "content/public/browser/browser_child_process_host.h"
#include "content/public/browser/browser_thread.h"
namespace task_management {
namespace {
base::ProcessMetrics* CreateProcessMetrics(base::ProcessHandle handle) {
#if !defined(OS_MACOSX)
return base::ProcessMetrics::CreateProcessMetrics(handle);
#else
return base::ProcessMetrics::CreateProcessMetrics(
handle, content::BrowserChildProcessHost::GetPortProvider());
#endif
}
inline bool IsResourceRefreshEnabled(RefreshType refresh_type,
int refresh_flags) {
return (refresh_flags & refresh_type) != 0;
}
} // namespace
TaskGroupSampler::TaskGroupSampler(
base::Process process,
const scoped_refptr<base::SequencedTaskRunner>& blocking_pool_runner,
const OnCpuRefreshCallback& on_cpu_refresh,
const OnMemoryRefreshCallback& on_memory_refresh,
const OnIdleWakeupsCallback& on_idle_wakeups,
#if defined(OS_LINUX)
const OnOpenFdCountCallback& on_open_fd_count,
#endif // defined(OS_LINUX)
const OnProcessPriorityCallback& on_process_priority)
: process_(process.Pass()),
process_metrics_(CreateProcessMetrics(process_.Handle())),
blocking_pool_runner_(blocking_pool_runner),
on_cpu_refresh_callback_(on_cpu_refresh),
on_memory_refresh_callback_(on_memory_refresh),
on_idle_wakeups_callback_(on_idle_wakeups),
#if defined(OS_LINUX)
on_open_fd_count_callback_(on_open_fd_count),
#endif // defined(OS_LINUX)
on_process_priority_callback_(on_process_priority) {
DCHECK(blocking_pool_runner.get());
// This object will be created on the UI thread, however the sequenced checker
// will be used to assert we're running the expensive operations on one of the
// blocking pool threads.
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
worker_pool_sequenced_checker_.DetachFromSequence();
}
void TaskGroupSampler::Refresh(int64_t refresh_flags) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (IsResourceRefreshEnabled(REFRESH_TYPE_CPU, refresh_flags)) {
base::PostTaskAndReplyWithResult(
blocking_pool_runner_.get(),
FROM_HERE,
base::Bind(&TaskGroupSampler::RefreshCpuUsage, this),
on_cpu_refresh_callback_);
}
if (IsResourceRefreshEnabled(REFRESH_TYPE_MEMORY, refresh_flags)) {
base::PostTaskAndReplyWithResult(
blocking_pool_runner_.get(),
FROM_HERE,
base::Bind(&TaskGroupSampler::RefreshMemoryUsage, this),
on_memory_refresh_callback_);
}
#if defined(OS_MACOSX) || defined(OS_LINUX)
if (IsResourceRefreshEnabled(REFRESH_TYPE_IDLE_WAKEUPS, refresh_flags)) {
base::PostTaskAndReplyWithResult(
blocking_pool_runner_.get(),
FROM_HERE,
base::Bind(&TaskGroupSampler::RefreshIdleWakeupsPerSecond, this),
on_idle_wakeups_callback_);
}
#endif // defined(OS_MACOSX) || defined(OS_LINUX)
#if defined(OS_LINUX)
if (IsResourceRefreshEnabled(REFRESH_TYPE_FD_COUNT, refresh_flags)) {
base::PostTaskAndReplyWithResult(
blocking_pool_runner_.get(),
FROM_HERE,
base::Bind(&TaskGroupSampler::RefreshOpenFdCount, this),
on_open_fd_count_callback_);
}
#endif // defined(OS_LINUX)
if (IsResourceRefreshEnabled(REFRESH_TYPE_PRIORITY, refresh_flags)) {
base::PostTaskAndReplyWithResult(
blocking_pool_runner_.get(),
FROM_HERE,
base::Bind(&TaskGroupSampler::RefreshProcessPriority, this),
on_process_priority_callback_);
}
}
TaskGroupSampler::~TaskGroupSampler() {
}
double TaskGroupSampler::RefreshCpuUsage() {
DCHECK(worker_pool_sequenced_checker_.CalledOnValidSequencedThread());
return process_metrics_->GetCPUUsage();
}
MemoryUsageStats TaskGroupSampler::RefreshMemoryUsage() {
DCHECK(worker_pool_sequenced_checker_.CalledOnValidSequencedThread());
// TODO(afakhry): Integrate Bruce's CL for faster retrieval of physical memory
// on Windows here.
MemoryUsageStats memory_usage;
// Refreshing the physical/private/shared memory at one shot.
base::WorkingSetKBytes ws_usage;
if (process_metrics_->GetWorkingSetKBytes(&ws_usage)) {
memory_usage.private_bytes = static_cast<int64_t>(ws_usage.priv * 1024);
memory_usage.shared_bytes = static_cast<int64_t>(ws_usage.shared * 1024);
#if defined(OS_LINUX)
// On Linux private memory is also resident. Just use it.
memory_usage.physical_bytes = memory_usage.private_bytes;
#else
// Memory = working_set.private which is working set minus shareable. This
// avoids the unpredictable counting that occurs when calculating memory as
// working set minus shared (renderer code counted when one tab is open and
// not counted when two or more are open) and it is much more efficient to
// calculate on Windows.
memory_usage.physical_bytes =
static_cast<int64_t>(process_metrics_->GetWorkingSetSize());
memory_usage.physical_bytes -=
static_cast<int64_t>(ws_usage.shareable * 1024);
#endif
}
return memory_usage;
}
int TaskGroupSampler::RefreshIdleWakeupsPerSecond() {
DCHECK(worker_pool_sequenced_checker_.CalledOnValidSequencedThread());
return process_metrics_->GetIdleWakeupsPerSecond();
}
#if defined(OS_LINUX)
int TaskGroupSampler::RefreshOpenFdCount() {
DCHECK(worker_pool_sequenced_checker_.CalledOnValidSequencedThread());
return process_metrics_->GetOpenFdCount();
}
#endif // defined(OS_LINUX)
bool TaskGroupSampler::RefreshProcessPriority() {
DCHECK(worker_pool_sequenced_checker_.CalledOnValidSequencedThread());
return process_.IsProcessBackgrounded();
}
} // namespace task_management
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