source: trunk/tools/porting/src/smallobject.h@ 372

Last change on this file since 372 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.

File size: 4.7 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5** Copyright (C) 2001-2004 Roberto Raggi
6**
7** This file is part of the qt3to4 porting application of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
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23**
24** In addition, as a special exception, Nokia gives you certain
25** additional rights. These rights are described in the Nokia Qt LGPL
26** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
27** package.
28**
29** GNU General Public License Usage
30** Alternatively, this file may be used under the terms of the GNU
31** General Public License version 3.0 as published by the Free Software
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33** packaging of this file. Please review the following information to
34** ensure the GNU General Public License version 3.0 requirements will be
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41****************************************************************************/
42
43#ifndef SMALLOBJECT_H
44#define SMALLOBJECT_H
45
46#include <QList>
47
48#include <assert.h>
49#include <stdlib.h>
50#include <string.h>
51
52QT_BEGIN_NAMESPACE
53
54struct block_t
55{
56 static int N;
57
58 block_t *chain;
59 char *data;
60 char *ptr;
61 char *end;
62
63 inline void init(int block_size = 256)
64 {
65 ++N;
66 chain = 0;
67 data = (char*) malloc(block_size);
68 ptr = data;
69 end = data + block_size;
70 }
71
72 inline void init0(int block_size)
73 {
74 init();
75 memset(data, '0', block_size);
76 }
77
78 inline void destroy()
79 {
80 --N;
81 if (chain) {
82 chain->destroy();
83 free(chain);
84 }
85
86 free(data);
87 }
88