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/* -*- 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.
#ifndef CHROME_COMMON_MACH_MESSAGE_SOURCE_MAC_H_
#define CHROME_COMMON_MACH_MESSAGE_SOURCE_MAC_H_
#include <CoreServices/CoreServices.h>
#include "base/scoped_cftyperef.h"
// Handles registering and cleaning up after a CFRunloopSource for a Mach port.
// Messages received on the port are piped through to a delegate.
//
// Example:
// class MyListener : public MachMessageSource::MachPortListener {
// public:
// void OnMachMessageReceived(void* mach_msg, size_t size) {
// printf("received message on Mach port\n");
// }
// };
//
// mach_port_t a_port = ...;
// MyListener listener;
// bool success = false;
// MachMessageSource message_source(port, listener, &success);
//
// if (!success) {
// exit(1); // Couldn't register mach runloop source.
// }
//
// CFRunLoopRun(); // Process messages on runloop...
class MachMessageSource {
public:
// Classes that want to listen on a Mach port can implement
// OnMachMessageReceived, |mach_msg| is a pointer to the raw message data and
// |size| is the buffer size;
class MachPortListener {
public:
virtual void OnMachMessageReceived(void* mach_msg, size_t size) = 0;
};
// |listener| is a week reference passed to CF, it needs to remain in
// existence till this object is destroeyd.
MachMessageSource(mach_port_t port,
MachPortListener* listener,
bool* success);
~MachMessageSource();
private:
// Called by CF when a new message arrives on the Mach port.
static void OnReceiveMachMessage(CFMachPortRef port, void* msg, CFIndex size,
void* closure);
scoped_cftyperef<CFRunLoopSourceRef> machport_runloop_ref_;
DISALLOW_COPY_AND_ASSIGN(MachMessageSource);
};
#endif // CHROME_COMMON_MACH_MESSAGE_SOURCE_MAC_H_
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