15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef BASE_MAC_SCOPED_IOOBJECT_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define BASE_MAC_SCOPED_IOOBJECT_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <IOKit/IOKitLib.h> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/compiler_specific.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace mac { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Just like ScopedCFTypeRef but for io_object_t and subclasses. 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)template<typename IOT> 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ScopedIOObject { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef IOT element_type; 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit ScopedIOObject(IOT object = IO_OBJECT_NULL) 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : object_(object) { 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~ScopedIOObject() { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (object_) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IOObjectRelease(object_); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void reset(IOT object = IO_OBJECT_NULL) { 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (object_) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IOObjectRelease(object_); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) object_ = object; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool operator==(IOT that) const { 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return object_ == that; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool operator!=(IOT that) const { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return object_ != that; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) operator IOT() const { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return object_; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IOT get() const { 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return object_; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void swap(ScopedIOObject& that) { 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IOT temp = that.object_; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) that.object_ = object_; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) object_ = temp; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IOT release() WARN_UNUSED_RESULT { 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IOT temp = object_; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) object_ = IO_OBJECT_NULL; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return temp; 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IOT object_; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(ScopedIOObject); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace mac 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace base 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // BASE_MAC_SCOPED_IOOBJECT_H_ 75