source: trunk/gsdl/packages/wv-0.5.44-gs/src/magick/memory.c@ 1468

Last change on this file since 1468 was 1468, checked in by paynter, 24 years ago

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1/*
2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3% %
4% %
5% %
6% M M EEEEE M M OOO RRRR Y Y %
7% MM MM E MM MM O O R R Y Y %
8% M M M EEE M M M O O RRRR Y %
9% M M E M M O O R R Y %
10% M M EEEEE M M OOO R R Y %
11% %
12% %
13% ImageMagick Memory Allocation Methods %
14% %
15% %
16% Software Design %
17% John Cristy %
18% July 1998 %
19% %
20% %
21% Copyright 1999 E. I. du Pont de Nemours and Company %
22% %
23% Permission is hereby granted, free of charge, to any person obtaining a %
24% copy of this software and associated documentation files ("ImageMagick"), %
25% to deal in ImageMagick without restriction, including without limitation %
26% the rights to use, copy, modify, merge, publish, distribute, sublicense, %
27% and/or sell copies of ImageMagick, and to permit persons to whom the %
28% ImageMagick is furnished to do so, subject to the following conditions: %
29% %
30% The above copyright notice and this permission notice shall be included in %
31% all copies or substantial portions of ImageMagick. %
32% %
33% The software is provided "as is", without warranty of any kind, express or %
34% implied, including but not limited to the warranties of merchantability, %
35% fitness for a particular purpose and noninfringement. In no event shall %
36% E. I. du Pont de Nemours and Company be liable for any claim, damages or %
37% other liability, whether in an action of contract, tort or otherwise, %
38% arising from, out of or in connection with ImageMagick or the use or other %
39% dealings in ImageMagick. %
40% %
41% Except as contained in this notice, the name of the E. I. du Pont de %
42% Nemours and Company shall not be used in advertising or otherwise to %
43% promote the sale, use or other dealings in ImageMagick without prior %
44% written authorization from the E. I. du Pont de Nemours and Company. %
45% %
46%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
47%
48%
49%
50*/
51
52
53/*
54 Include declarations.
55*/
56#include "magick.h"
57#include "defines.h"
58
59
60/*
61%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
62% %
63% %
64% %
65% F r e e M e m o r y %
66% %
67% %
68% %
69%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
70%
71% Method FreeMemory frees memory that has already been allocated.
72%
73% The format of the FreeMemory method is:
74%
75% void FreeMemory(void *memory)
76%
77% A description of each parameter follows:
78%
79% o span: Specifies the pointer to a block memory to free for reuse.
80%
81%
82*/
83Export void FreeMemory(void *memory)
84{
85 if (memory == (void *) NULL)
86 return;
87 free(memory);
88 memory=(void *)NULL;
89}
90
91Export void *AllocateMemory(const size_t size)
92{
93 return(malloc(size));
94}
95
96
97/*
98%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
99% %
100% %
101% %
102% R e a l l o c a t e M e m o r y %
103% %
104% %
105% %
106%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
107%
108% Method ReallocateMemory changes the size of the memory and returns a
109% pointer to the (possibly moved) block. The contents will be unchanged up
110% to the lesser of the new and old sizes.
111%
112% The format of the ReallocateMemory method is:
113%
114% void *ReallocateMemory(void *memory,const size_t size)
115%
116% A description of each parameter follows:
117%
118% o memory: Method ReallocateMemory returns a pointer to a block of at
119% least size bytes suitably aligned for any use.
120%
121% o size: Specifies the size of the memory to return.
122%
123%
124*/
125Export void *ReallocateMemory(void *memory,const size_t size)
126{
127 void
128 *new_memory;
129
130 new_memory=(void *) NULL;
131 if (size)
132 new_memory=realloc(memory,size);
133 if (new_memory == (void *) NULL)
134 FreeMemory(memory);
135 return(new_memory);
136}
137
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