POSIX: Transfer network data using shared memory

chrome/renderer/render_thread.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.
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 #include <algorithm>
 
 #include "chrome/renderer/render_thread.h"
@@ skipping 146 matching lines @@
 
   delete user_script_slave_;
   user_script_slave_ = NULL;
 
 #if defined(OS_WIN)
   CoUninitialize();
 #endif
 }
 
 void RenderThread::OnUpdateVisitedLinks(base::SharedMemoryHandle table) {
-  DCHECK(table) << "Bad table handle";
+  DCHECK(base::SharedMemory::IsHandleValid(table)) << "Bad table handle";
   visited_link_slave_->Init(table);
 }
 
 void RenderThread::OnUpdateUserScripts(
     base::SharedMemoryHandle scripts) {
-  DCHECK(scripts) << "Bad scripts handle";
+  DCHECK(base::SharedMemory::IsHandleValid(scripts)) << "Bad scripts handle";
   user_script_slave_->UpdateScripts(scripts);
 }
 
 void RenderThread::OnMessageReceived(const IPC::Message& msg) {
   // NOTE: We could subclass router_ to intercept OnControlMessageReceived, but
   // it seems simpler to just process any control messages that we care about
   // up-front and then send the rest of the messages onto router_.
 
   if (msg.routing_id() == MSG_ROUTING_CONTROL) {
     IPC_BEGIN_MESSAGE_MAP(RenderThread, msg)
@@ skipping 98 matching lines @@
 void RenderThread::InformHostOfCacheStatsLater() {
   // Rate limit informing the host of our cache stats.
   if (!cache_stats_factory_->empty())
     return;
 
   MessageLoop::current()->PostDelayedTask(FROM_HERE,
       cache_stats_factory_->NewRunnableMethod(
           &RenderThread::InformHostOfCacheStats),
       kCacheStatsDelayMS);
 }