1/*
2 * PROGRAM: MT debugging support.
3 * MODULE: Reasons.h
4 * DESCRIPTION: Tool to access latest history of taken locks.
5 *
6 * The contents of this file are subject to the Initial
7 * Developer's Public License Version 1.0 (the "License");
8 * you may not use this file except in compliance with the
9 * License. You may obtain a copy of the License at
10 * http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
11 *
12 * Software distributed under the License is distributed AS IS,
13 * WITHOUT WARRANTY OF ANY KIND, either express or implied.
14 * See the License for the specific language governing rights
15 * and limitations under the License.
16 *
17 * The Original Code was created by Alex Peshkov
18 * for the Firebird Open Source RDBMS project.
19 *
20 * Copyright (c) 2012 Alex Peshkov <peshkoff at mail.ru>
21 * and all contributors signed below.
22 *
23 * All Rights Reserved.
24 * Contributor(s): ______________________________________.
25 *
26 *
27 */
28
29#ifndef FB_COMMON_CLASSES_REASONS
30#define FB_COMMON_CLASSES_REASONS
31
32#include <string.h>
33
34// __func__ is according to C99, but let's better define it for better flexibility
35// For example, MSVC 2005 does not support __func__
36#if defined _MSC_VER && (_MSC_VER <= 1600)
37#define FB_FUNCTION __FUNCTION__
38#elif defined(__GNUC__)
39#define FB_FUNCTION (__FILE__ ": " STRINGIZE(__LINE__) )
40#else
41#define FB_FUNCTION __func__
42#endif
43
44namespace Firebird
45{
46 class Reasons
47 {
48 public:
49#ifndef DEV_BUILD
50 void reason(const char*) { }
51#else
52 Reasons()
53 : frIndex(0)
54 {
55 memset(from, 0, sizeof(from));
56 }
57
58 void reason(const char* fr)
59 {
60 from[frIndex % FB_NELEM(from)] = fr;
61 frIndex++;
62 frIndex %= FB_NELEM(from);
63 }
64
65private:
66 const char* from[8];
67 unsigned frIndex;
68#endif
69 };
70} // namespace Firebird
71
72#endif // FB_COMMON_CLASSES_REASONS
73