1/* 2 * Copyright (C) 2013 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef ImportanceAssertion_h 27#define ImportanceAssertion_h 28 29#if PLATFORM(MAC) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 30 31#if __has_include(<libproc_internal.h>) 32#include <libproc_internal.h> 33#endif 34 35extern "C" int proc_importance_assertion_begin_with_msg(mach_msg_header_t*, mach_msg_trailer_t*, uint64_t*); 36extern "C" int proc_importance_assertion_complete(uint64_t assertion_handle); 37 38namespace IPC { 39 40class ImportanceAssertion { 41 WTF_MAKE_NONCOPYABLE(ImportanceAssertion); 42 43public: 44 explicit ImportanceAssertion(mach_msg_header_t* header) 45 : m_assertion(0) 46 { 47#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101000 48 proc_denap_assertion_begin_with_msg(header, &m_assertion); 49#else 50 proc_importance_assertion_begin_with_msg(header, 0, &m_assertion); 51#endif 52 } 53 54 ~ImportanceAssertion() 55 { 56#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101000 57 proc_denap_assertion_complete(m_assertion); 58#else 59 proc_importance_assertion_complete(m_assertion); 60#endif 61 } 62 63private: 64 uint64_t m_assertion; 65}; 66 67} 68 69#endif // PLATFORM(MAC) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 70 71#endif // ImportanceAssertion_h 72