Add chrome to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 122 insertions, 0 deletions

diff --git a/chrome/plugin/plugin_process.cc b/chrome/plugin/plugin_process.cc
new file mode 100644
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+++ b/chrome/plugin/plugin_process.cc
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <windows.h>
+#include "chrome/plugin/plugin_process.h"
+
+#include "base/basictypes.h"
+#include "base/scoped_handle.h"
+#include "chrome/common/ipc_channel.h"
+#include "chrome/common/ipc_message_utils.h"
+#include "chrome/common/plugin_messages.h"
+#include "chrome/common/render_messages.h"
+#include "webkit/glue/webkit_glue.h"
+
+// Custom factory to allow us to pass additional ctor arguments.
+class PluginProcessFactory : public ChildProcessFactoryInterface {
+ public:
+  explicit PluginProcessFactory(const std::wstring& plugin_path)
+      : plugin_path_(plugin_path) {
+  }
+
+  virtual ChildProcess* Create(const std::wstring& channel_name) {
+    return new PluginProcess(channel_name, plugin_path_);
+  }
+
+  const std::wstring& plugin_path_;
+};
+
+// How long to wait after there are no more plugin instances before killing the
+// process.
+static const int kProcessShutdownDelayMs = 10 * 1000;
+
+// No AddRef required when using PluginProcess with RunnableMethod.  This is
+// okay since the lifetime of the PluginProcess is always greater than the
+// lifetime of PluginThread because it's a member variable.
+template <> struct RunnableMethodTraits<PluginProcess> {
+  static void RetainCallee(PluginProcess*) {}
+  static void ReleaseCallee(PluginProcess*) {}
+};
+
+PluginProcess::PluginProcess(const std::wstring& channel_name,
+                             const std::wstring& plugin_path) :
+    plugin_path_(plugin_path),
+#pragma warning(suppress: 4355)  // Okay to pass "this" here.
+    plugin_thread_(this, channel_name) {
+}
+
+PluginProcess::~PluginProcess() {
+}
+
+bool PluginProcess::GlobalInit(const std::wstring &channel_name,
+                               const std::wstring &plugin_path) {
+  PluginProcessFactory factory(plugin_path);
+  return ChildProcess::GlobalInit(channel_name, &factory);
+}
+
+
+// Note: may be called on any thread
+void PluginProcess::OnFinalRelease() {
+  // We override this to have the process linger for a few seconds to
+  // better accomdate back/forth navigation. This avoids shutting down and
+  // immediately starting a new plugin process. If a new channel is
+  // opened in the interim, the current process will not be shutdown.
+  main_thread_loop_->PostDelayedTask(FROM_HERE, NewRunnableMethod(
+          this, &PluginProcess::OnProcessShutdownTimeout),
+      kProcessShutdownDelayMs);
+}
+
+void PluginProcess::OnProcessShutdownTimeout() {
+  if (GetProcessRefcount() == 0) {
+    // The plugin process shutdown sequence is a request response based
+    // mechanism, where we send out an initial feeler request to the plugin
+    // process host instance in the browser to verify if it is ok to shutdown
+    // the plugin process. The browser then sends back a response indicating
+    // whether it is ok to shutdown.
+    plugin_thread_.Send(new PluginProcessHostMsg_ShutdownRequest);
+  }
+}
+
+// static
+void PluginProcess::ShutdownProcessResponse(bool ok_to_shutdown) {
+  if (ok_to_shutdown) {
+    PluginProcess* plugin_process =
+        static_cast<PluginProcess*>(child_process_);
+    DCHECK(plugin_process);
+    plugin_process->Shutdown();
+  }
+}
+
+void PluginProcess::BrowserShutdown() {
+  ShutdownProcessResponse(true);
+}
+
+void PluginProcess::Shutdown() {
+  ChildProcess::OnFinalRelease();
+}