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// Copyright (c) 2012 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 "content/browser/profiler_controller_impl.h"
#include "base/bind.h"
#include "base/process/process_handle.h"
#include "base/tracked_objects.h"
#include "content/common/child_process_messages.h"
#include "content/public/browser/browser_child_process_host_iterator.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/child_process_data.h"
#include "content/public/browser/profiler_subscriber.h"
#include "content/public/browser/render_process_host.h"
namespace content {
ProfilerController* ProfilerController::GetInstance() {
return ProfilerControllerImpl::GetInstance();
}
ProfilerControllerImpl* ProfilerControllerImpl::GetInstance() {
return base::Singleton<ProfilerControllerImpl>::get();
}
ProfilerControllerImpl::ProfilerControllerImpl() : subscriber_(NULL) {
}
ProfilerControllerImpl::~ProfilerControllerImpl() {
}
void ProfilerControllerImpl::OnPendingProcesses(int sequence_number,
int pending_processes,
bool end) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (subscriber_)
subscriber_->OnPendingProcesses(sequence_number, pending_processes, end);
}
void ProfilerControllerImpl::OnProfilerDataCollected(
int sequence_number,
const tracked_objects::ProcessDataSnapshot& profiler_data,
content::ProcessType process_type) {
if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&ProfilerControllerImpl::OnProfilerDataCollected,
base::Unretained(this),
sequence_number,
profiler_data,
process_type));
return;
}
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (subscriber_) {
subscriber_->OnProfilerDataCollected(sequence_number, profiler_data,
process_type);
}
}
void ProfilerControllerImpl::Register(ProfilerSubscriber* subscriber) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK(!subscriber_);
subscriber_ = subscriber;
}
void ProfilerControllerImpl::Unregister(const ProfilerSubscriber* subscriber) {
DCHECK_EQ(subscriber_, subscriber);
subscriber_ = NULL;
}
void ProfilerControllerImpl::GetProfilerDataFromChildProcesses(
int sequence_number,
int current_profiling_phase) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
int pending_processes = 0;
for (BrowserChildProcessHostIterator iter; !iter.Done(); ++iter) {
// In some cases, there may be no child process of the given type (for
// example, the GPU process may not exist and there may instead just be a
// GPU thread in the browser process). If that's the case, then the process
// handle will be base::kNullProcessHandle and we shouldn't ask it for data.
if (iter.GetData().handle == base::kNullProcessHandle)
continue;
++pending_processes;
if (!iter.Send(new ChildProcessMsg_GetChildProfilerData(
sequence_number, current_profiling_phase))) {
--pending_processes;
}
}
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(
&ProfilerControllerImpl::OnPendingProcesses,
base::Unretained(this),
sequence_number,
pending_processes,
true));
}
// static
void ProfilerControllerImpl::NotifyChildProcessesOfProfilingPhaseCompletion(
int profiling_phase) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
for (BrowserChildProcessHostIterator iter; !iter.Done(); ++iter) {
// In some cases, there may be no child process of the given type (for
// example, the GPU process may not exist and there may instead just be a
// GPU thread in the browser process). If that's the case, then the process
// handle will be base::kNullProcessHandle and we shouldn't send it a
// message.
if (iter.GetData().handle == base::kNullProcessHandle)
continue;
iter.Send(new ChildProcessMsg_ProfilingPhaseCompleted(profiling_phase));
}
}
void ProfilerControllerImpl::GetProfilerData(int sequence_number,
int current_profiling_phase) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// Iterates through renderers in UI thread, and through other child processes
// in IO thread, and send them GetChildProfilerData message. Renderers have to
// be contacted from UI thread, and other processes - from IO thread.
int pending_processes = 0;
for (RenderProcessHost::iterator it(RenderProcessHost::AllHostsIterator());
!it.IsAtEnd(); it.Advance()) {
++pending_processes;
if (!it.GetCurrentValue()->Send(new ChildProcessMsg_GetChildProfilerData(
sequence_number, current_profiling_phase))) {
--pending_processes;
}
}
OnPendingProcesses(sequence_number, pending_processes, false);
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&ProfilerControllerImpl::GetProfilerDataFromChildProcesses,
base::Unretained(this), sequence_number,
current_profiling_phase));
}
void ProfilerControllerImpl::OnProfilingPhaseCompleted(int profiling_phase) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// Iterates through renderers in UI thread, and through other child processes
// in IO thread, and send them OnProfilingPhase message. Renderers have to be
// contacted from UI thread, and other processes - from IO thread.
for (RenderProcessHost::iterator it(RenderProcessHost::AllHostsIterator());
!it.IsAtEnd(); it.Advance()) {
it.GetCurrentValue()->Send(
new ChildProcessMsg_ProfilingPhaseCompleted(profiling_phase));
}
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&ProfilerControllerImpl::
NotifyChildProcessesOfProfilingPhaseCompletion,
profiling_phase));
}
} // namespace content
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