Delay releasing plugin process for 10s.

chrome/plugin/plugin_channel.cc

 // 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/plugin/plugin_channel.h"
 
 #include "base/command_line.h"
 #include "base/process_util.h"
 #include "base/string_util.h"
 #include "build/build_config.h"
 #include "chrome/common/child_process.h"
 #include "chrome/common/plugin_messages.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/plugin/plugin_thread.h"
 
 #if defined(OS_POSIX)
 #include "ipc/ipc_channel_posix.h"
 #endif
 
+class PluginReleaseTask : public Task {
+ public:
+  void Run() {
+    ChildProcess::current()->ReleaseProcess();
+  }
+};
+
+// How long we wait before releasing the plugin process.
+static const int kPluginReleaseTimeMS = 10000;

[jam, 2009/08/07 23:33:26]

nit: the convention is to use "Ms"

+
 PluginChannel* PluginChannel::GetPluginChannel(
     int process_id, MessageLoop* ipc_message_loop) {
   // map renderer's process id to a (single) channel to that process
   std::string channel_name = StringPrintf(
       "%d.r%d", base::GetCurrentProcId(), process_id);
 
   return static_cast<PluginChannel*>(PluginChannelBase::GetChannel(
       channel_name,
       IPC::Channel::MODE_SERVER,
       ClassFactory,
@@ skipping 17 matching lines @@
 PluginChannel::~PluginChannel() {
   if (renderer_handle_)
     base::CloseProcessHandle(renderer_handle_);
 #if defined(OS_POSIX)
   IPC::RemoveAndCloseChannelSocket(channel_name());
   // If we still have the renderer FD, close it.
   if (renderer_fd_ != -1) {
     close(renderer_fd_);
   }
 #endif
-  ChildProcess::current()->ReleaseProcess();
+  MessageLoop::current()->PostDelayedTask(FROM_HERE, new PluginReleaseTask(),
+                                          kPluginReleaseTimeMS);
 }
 
 bool PluginChannel::Send(IPC::Message* msg) {
   in_send_++;
   if (log_messages_) {
     LOG(INFO) << "sending message @" << msg << " on channel @" << this
               << " with type " << msg->type();
   }
   bool result = PluginChannelBase::Send(msg);
   in_send_--;
@@ skipping 87 matching lines @@
   // This gets called when the PluginChannel is initially created. At this
   // point, create the socketpair and assign the plugin side FD to the channel
   // name. Keep the renderer side FD as a member variable in the PluginChannel
   // to be able to transmit it through IPC.
   int plugin_fd;
   IPC::SocketPair(&plugin_fd, &renderer_fd_);
   IPC::AddChannelSocket(channel_name(), plugin_fd);
 #endif
   return PluginChannelBase::Init(ipc_message_loop, create_pipe_now);
 }