Initial implementation of an IPC adapter to expose Chrome IPC to Native Client.

chrome/nacl/nacl_ipc_manager.cc

+// 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/nacl/nacl_ipc_manager.h"
+
+#include "chrome/nacl/nacl_ipc_adapter.h"
+#include "content/common/child_process.h"
+
+NaClIPCManager::NaClIPCManager() {
+}
+
+NaClIPCManager::~NaClIPCManager() {
+}
+
+void* NaClIPCManager::CreateChannel(const IPC::ChannelHandle& handle) {
+  scoped_refptr<NaClIPCAdapter> adapter(
+      new NaClIPCAdapter(handle,
+                         ChildProcess::current()->io_message_loop_proxy()));
+
+  // Use the object's address as the handle given to nacl. We just need a
+  // unique void* to give to nacl for us to look it up when we get calls on
+  // this handle in the future.
+  void* nacl_handle = adapter.get();
+  adapters_.insert(std::make_pair(nacl_handle, adapter));
+  return nacl_handle;
+}
+
+void NaClIPCManager::DestroyChannel(void* handle) {
+  scoped_refptr<NaClIPCAdapter> adapter = GetAdapter(handle);
+  if (!adapter.get())
+    return;
+  adapter->CloseChannel();
+}
+
+int NaClIPCManager::SendMessage(void* handle,
+                                const char* data,
+                                int data_length) {
+  scoped_refptr<NaClIPCAdapter> adapter = GetAdapter(handle);
+  if (!adapter.get())
+    return -1;
+  return adapter->Send(data, data_length);
+}
+
+int NaClIPCManager::ReceiveMessage(void* handle,
+                                   char* buffer,
+                                   int buffer_length) {
+  scoped_refptr<NaClIPCAdapter> adapter = GetAdapter(handle);
+  if (!adapter.get())
+    return -1;
+  return adapter->BlockingReceive(buffer, buffer_length);
+}
+
+scoped_refptr<NaClIPCAdapter> NaClIPCManager::GetAdapter(void* handle) {
+  base::AutoLock lock(lock_);
+  AdapterMap::iterator found = adapters_.find(handle);
+  if (found == adapters_.end())
+    return scoped_refptr<NaClIPCAdapter>();
+  return found->second;
+}