Review URL: http://codereview.chromium.org/10958

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@5509 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 83 insertions, 0 deletions

diff --git a/chrome/browser/suspend_controller.cc b/chrome/browser/suspend_controller.cc
new file mode 100644
index 0000000..9eb9eab
--- /dev/null
+++ b/chrome/browser/suspend_controller.cc
@@ -0,0 +1,83 @@
+// Copyright (c) 2006-2008 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/suspend_controller.h"
+
+#include "base/logging.h"
+#include "base/message_loop.h"
+#include "base/task.h"
+#include "base/thread.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/profile.h"
+#include "chrome/browser/resource_dispatcher_host.h"
+#include "chrome/browser/safe_browsing/safe_browsing_service.h"
+#include "net/url_request/url_request_job.h"
+#include "net/url_request/url_request_job_tracker.h"
+
+// Static member.
+bool SuspendController::is_suspended_ = false;
+
+// Static method.
+void SuspendController::OnSuspend(Profile* profile) {
+  if (is_suspended_)
+    return;
+  is_suspended_ = true;
+
+  LOG(INFO) << "Received APM suspend message";
+
+  SuspendController* controller = g_browser_process->suspend_controller();
+
+  MessageLoop* io_loop = g_browser_process->io_thread()->message_loop();
+  io_loop->PostTask(FROM_HERE,
+      NewRunnableMethod(controller,
+                        &SuspendController::StopRequests,
+                        profile));
+
+  ResourceDispatcherHost* rdh = g_browser_process->resource_dispatcher_host();
+  SafeBrowsingService* safe_browsing_service = rdh->safe_browsing_service();
+  io_loop->PostTask(FROM_HERE,
+      NewRunnableMethod(safe_browsing_service,
+                        &SafeBrowsingService::OnSuspend));
+}
+
+// Static method.
+void SuspendController::OnResume(Profile* profile) {
+  if (!is_suspended_)
+    return;
+  is_suspended_ = false;
+
+  LOG(INFO) << "Received APM resume message";
+
+  SuspendController* controller = g_browser_process->suspend_controller();
+
+  MessageLoop* io_loop = g_browser_process->io_thread()->message_loop();
+  io_loop->PostTask(FROM_HERE,
+      NewRunnableMethod(controller,
+                        &SuspendController::AllowNewRequests,
+                        profile));
+
+  ResourceDispatcherHost* rdh = g_browser_process->resource_dispatcher_host();
+  SafeBrowsingService* safe_browsing_service = rdh->safe_browsing_service();
+  io_loop->PostTask(FROM_HERE,
+      NewRunnableMethod(safe_browsing_service,
+                        &SafeBrowsingService::OnResume));
+}
+
+void SuspendController::StopRequests(Profile* profile) {
+  // Cancel all requests and stop creating new ones.
+  URLRequestJobTracker::JobIterator it = g_url_request_job_tracker.begin();
+  for (;it != g_url_request_job_tracker.end(); ++it) {
+    URLRequestJob* job = const_cast<URLRequestJob*>(*it);
+    job->Kill();
+  }
+
+  // Close the network session.
+  profile->GetRequestContext()->http_transaction_factory()->Suspend(true);
+}
+
+void SuspendController::AllowNewRequests(Profile* profile) {
+  // Re-enable the network session.
+  profile->GetRequestContext()->http_transaction_factory()->Suspend(false);
+}
+