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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 "chrome/browser/android/process_utils.h"
#include <vector>
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "chrome/common/render_messages.h"
#include "content/public/browser/render_process_host.h"
#include "jni/process_utils_jni.h"
namespace {
// Only accessed from the JNI thread by ToggleWebKitSharedTimers() which is
// implemented below.
base::LazyInstance<std::vector<int /* process id */> > g_suspended_processes =
LAZY_INSTANCE_INITIALIZER;
// Suspends timers in all current render processes.
void SuspendWebKitSharedTimers(std::vector<int>* suspended_processes) {
for (content::RenderProcessHost::iterator i(
content::RenderProcessHost::AllHostsIterator());
!i.IsAtEnd(); i.Advance()) {
content::RenderProcessHost* host = i.GetCurrentValue();
suspended_processes->push_back(host->GetID());
host->Send(new ChromeViewMsg_ToggleWebKitSharedTimer(true));
}
}
void ResumeWebkitSharedTimers(const std::vector<int>& suspended_processes) {
for (std::vector<int>::const_iterator it = suspended_processes.begin();
it != suspended_processes.end(); ++it) {
content::RenderProcessHost* host = content::RenderProcessHost::FromID(*it);
if (host)
host->Send(new ChromeViewMsg_ToggleWebKitSharedTimer(false));
}
}
} // namespace
static void ToggleWebKitSharedTimers(JNIEnv* env,
jclass obj,
jboolean suspend) {
std::vector<int>* suspended_processes = &g_suspended_processes.Get();
if (suspend) {
DCHECK(suspended_processes->empty());
SuspendWebKitSharedTimers(suspended_processes);
} else {
ResumeWebkitSharedTimers(*suspended_processes);
suspended_processes->clear();
}
}
// TODO(pliard): http://crbug.com/137674
bool RegisterProcessUtils(JNIEnv* env) {
return RegisterNativesImpl(env);
}
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