1/* 2 * Copyright (c) 2008,2011 Apple Inc. All Rights Reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23 24 25// 26// vproc++ - interface to low-level transaction tracking facility 27// 28#ifndef _H_VPROCPP 29#define _H_VPROCPP 30 31#include <vproc.h> 32 33 34namespace Security { 35namespace VProc { 36 37 38class Transaction { 39public: 40 Transaction(vproc_t vp = 0) : mVP(vp) { mTransaction = ::vproc_transaction_begin(vp); } 41 Transaction(bool activate, vproc_t vp = 0) : mVP(vp) 42 { if (activate) mTransaction = ::vproc_transaction_begin(vp); else mTransaction = 0; } 43 ~Transaction() { deactivate(); } 44 45 // explicit state management 46 void activate(); 47 void deactivate() 48 { if (mTransaction) { ::vproc_transaction_end(mVP, mTransaction); mTransaction = 0; }} 49 bool active() const { return mTransaction != 0; } 50 51 static size_t debugCount(); // debug use only 52 53private: 54 vproc_t mVP; 55 vproc_transaction_t mTransaction; 56}; 57 58 59} // end namespace VProc 60} // end namespace Security 61 62 63#endif //_H_VPROCPP 64