1 files changed, 61 insertions, 0 deletions
diff --git a/ipc/chromium/src/chrome/common/mach_message_source_mac.cc b/ipc/chromium/src/chrome/common/mach_message_source_mac.cc
new file mode 100644
index 0000000000..d3be7efdb5
--- /dev/null
+++ b/ipc/chromium/src/chrome/common/mach_message_source_mac.cc
@@ -0,0 +1,61 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 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/common/mach_message_source_mac.h"
+
+#include "base/logging.h"
+
+MachMessageSource::MachMessageSource(mach_port_t port,
+                                     MachPortListener* msg_listener,
+                                     bool* success) {
+  DCHECK(msg_listener);
+  DCHECK(success);
+  DCHECK(port != MACH_PORT_NULL);
+
+  CFMachPortContext port_context = {0};
+  port_context.info = msg_listener;
+
+  scoped_cftyperef<CFMachPortRef> cf_mach_port_ref(CFMachPortCreateWithPort(
+      kCFAllocatorDefault, port, MachMessageSource::OnReceiveMachMessage,
+      &port_context, NULL));
+
+  if (cf_mach_port_ref.get() == NULL) {
+    CHROMIUM_LOG(WARNING) << "CFMachPortCreate failed";
+    *success = false;
+    return;
+  }
+
+  // Create a RL source.
+  machport_runloop_ref_.reset(CFMachPortCreateRunLoopSource(
+      kCFAllocatorDefault, cf_mach_port_ref.get(), 0));
+
+  if (machport_runloop_ref_.get() == NULL) {
+    CHROMIUM_LOG(WARNING) << "CFMachPortCreateRunLoopSource failed";
+    *success = false;
+    return;
+  }
+
+  CFRunLoopAddSource(CFRunLoopGetCurrent(), machport_runloop_ref_.get(),
+                     kCFRunLoopCommonModes);
+  *success = true;
+}
+
+MachMessageSource::~MachMessageSource() {
+  CFRunLoopRemoveSource(CFRunLoopGetCurrent(), machport_runloop_ref_.get(),
+                        kCFRunLoopCommonModes);
+}
+
+// static
+void MachMessageSource::OnReceiveMachMessage(CFMachPortRef port, void* msg,
+                                             CFIndex size, void* closure) {
+  MachPortListener* msg_listener = static_cast<MachPortListener*>(closure);
+  size_t msg_size = (size < 0) ? 0 : static_cast<size_t>(size);
+  DCHECK(msg && msg_size > 0);  // this should never happen!
+
+  if (msg_listener && msg && msg_size > 0) {
+    msg_listener->OnMachMessageReceived(msg, msg_size);
+  }
+}