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