MagickCore 6.9.11-60
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memory_.h
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1/*
2 Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization
3 dedicated to making software imaging solutions freely available.
4
5 You may not use this file except in compliance with the License. You may
6 obtain a copy of the License at
7
8 https://imagemagick.org/script/license.php
9
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
15
16 MagickCore memory methods.
17*/
18#ifndef MAGICKCORE_MEMORY_H
19#define MAGICKCORE_MEMORY_H
20
21#include <errno.h>
22#include <assert.h>
23
24#if defined(__cplusplus) || defined(c_plusplus)
25extern "C" {
26#endif
27
28typedef struct _MemoryInfo
30
31typedef void
32 *(*AcquireMemoryHandler)(size_t) magick_alloc_size(1),
33 (*DestroyMemoryHandler)(void *),
34 *(*ResizeMemoryHandler)(void *,size_t) magick_alloc_size(2),
35 *(*AcquireAlignedMemoryHandler)(const size_t,const size_t),
37
39 *AcquireVirtualMemory(const size_t,const size_t) magick_alloc_sizes(1,2),
41
42extern MagickExport size_t
44
45extern MagickExport void
46 *AcquireAlignedMemory(const size_t,const size_t)
47 magick_attribute((__malloc__)) magick_alloc_sizes(1,2),
48 *AcquireMagickMemory(const size_t) magick_attribute((__malloc__))
50 *AcquireCriticalMemory(const size_t),
51 *AcquireQuantumMemory(const size_t,const size_t)
52 magick_attribute((__malloc__)) magick_alloc_sizes(1,2),
54 const size_t) magick_attribute((__nonnull__)),
61 *ResetMagickMemory(void *,int,const size_t),
62 *ResizeMagickMemory(void *,const size_t)
63 magick_attribute((__malloc__)) magick_alloc_size(2),
64 *ResizeQuantumMemory(void *,const size_t,const size_t)
65 magick_attribute((__malloc__)) magick_alloc_sizes(2,3),
70
72 const size_t count,const size_t quantum)
73{
74 if ((count == 0) || (quantum == 0))
75 return(MagickTrue);
76 if (quantum != ((count*quantum)/count))
77 {
78 errno=ENOMEM;
79 return(MagickTrue);
80 }
81 return(MagickFalse);
82}
83
85 const size_t count,const size_t quantum,size_t *const extent)
86{
87 size_t
88 length;
89
90 if ((count == 0) || (quantum == 0))
91 return(MagickTrue);
92 length=count*quantum;
93 if (quantum != (length/count))
94 {
95 errno=ENOMEM;
96 return(MagickTrue);
97 }
98 assert(extent != (size_t *const) NULL);
99 *extent=length;
100 return(MagickFalse);
101}
102
103#if defined(__cplusplus) || defined(c_plusplus)
104}
105#endif
106
107#endif
#define magick_restrict
Definition: MagickCore.h:41
MagickExport MagickBooleanType magick_attribute((deprecated))
MagickBooleanType
Definition: magick-type.h:203
@ MagickFalse
Definition: magick-type.h:204
@ MagickTrue
Definition: magick-type.h:205
static MagickBooleanType HeapOverflowSanityCheckGetSize(const size_t count, const size_t quantum, size_t *const extent)
Definition: memory_.h:84
MagickExport MemoryInfo * RelinquishVirtualMemory(MemoryInfo *)
Definition: memory.c:1229
MagickExport void * AcquireAlignedMemory(const size_t, const size_t) magick_attribute((__malloc__)) magick_alloc_sizes(1
MagickExport void SetMagickAlignedMemoryMethods(AcquireAlignedMemoryHandler, RelinquishAlignedMemoryHandler)
MagickExport void * GetVirtualMemoryBlob(const MemoryInfo *)
MagickExport void * AcquireQuantumMemory(const size_t, const size_t) magick_attribute((__malloc__)) magick_alloc_sizes(1
MagickExport size_t GetMaxMemoryRequest(void)
Definition: memory.c:1044
MagickExport void DestroyMagickMemory(void)
MagickExport MemoryInfo * AcquireVirtualMemory(const size_t, const size_t) magick_alloc_sizes(1
static MagickBooleanType HeapOverflowSanityCheck(const size_t count, const size_t quantum)
Definition: memory_.h:71
MagickExport void * RelinquishMagickMemory(void *)
MagickExport void * AcquireCriticalMemory(const size_t)
MagickExport void * ResetMagickMemory(void *, int, const size_t)
MagickExport void * CopyMagickMemory(void *magick_restrict, const void *magick_restrict, const size_t) magick_attribute((__nonnull__))
MagickExport void * AcquireMagickMemory(const size_t) magick_attribute((__malloc__)) magick_alloc_size(1)
MagickExport void * ResizeQuantumMemory(void *, const size_t, const size_t) magick_attribute((__malloc__)) magick_alloc_sizes(2
void *(*)(*) *(* ResizeMemoryHandler)(void *, size_t) magick_alloc_size(2)
Definition: memory_.h:34
MagickExport void * RelinquishAlignedMemory(void *)
void *(* AcquireMemoryHandler)(size_t) magick_alloc_size(1)
Definition: memory_.h:32
MagickExport void * ResizeMagickMemory(void *, const size_t) magick_attribute((__malloc__)) magick_alloc_size(2)
MagickExport void GetMagickMemoryMethods(AcquireMemoryHandler *, ResizeMemoryHandler *, DestroyMemoryHandler *)
MagickExport void SetMagickMemoryMethods(AcquireMemoryHandler, ResizeMemoryHandler, DestroyMemoryHandler)
Definition: memory.c:1531
void *(*)(*) *(*) *(* AcquireAlignedMemoryHandler)(const size_t, const size_t)
Definition: memory_.h:35
void *(*)(*) *(*) *(*)(* RelinquishAlignedMemoryHandler)(void *)
Definition: memory_.h:36
void *(*)(* DestroyMemoryHandler)(void *)
Definition: memory_.h:33
#define magick_alloc_sizes(x, y)
Definition: method-attribute.h:114
#define MagickExport
Definition: method-attribute.h:80
#define magick_alloc_size(x)
Definition: method-attribute.h:113
Definition: memory.c:164
size_t length
Definition: memory.c:172