1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
Copyright 1999-2020 ImageMagick Studio LLC, a non-profit organization
dedicated to making software imaging solutions freely available.
You may not use this file except in compliance with the License. You may
obtain a copy of the License at
https://imagemagick.org/script/license.php
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
MagickCore private methods for internal threading.
*/
#ifndef MAGICKCORE_THREAD_PRIVATE_H
#define MAGICKCORE_THREAD_PRIVATE_H
#include "MagickCore/cache.h"
#include "MagickCore/image-private.h"
#include "MagickCore/resource_.h"
#include "MagickCore/thread_.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
/*
Number of threads bounded by the amount of work and any thread resource limit.
The limit is 2 if the pixel cache type is not memory or memory-mapped.
*/
#define magick_number_threads(source,destination,chunk,multithreaded) \
num_threads((multithreaded) == 0 ? 1 : \
((GetImagePixelCacheType(source) != MemoryCache) && \
(GetImagePixelCacheType(source) != MapCache)) || \
((GetImagePixelCacheType(destination) != MemoryCache) && \
(GetImagePixelCacheType(destination) != MapCache)) ? \
MagickMax(MagickMin(GetMagickResourceLimit(ThreadResource),2),1) : \
MagickMax(MagickMin((ssize_t) GetMagickResourceLimit(ThreadResource),(ssize_t) (chunk)/64),1))
#if defined(__clang__) || (__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ > 10))
#define MagickCachePrefetch(address,mode,locality) \
__builtin_prefetch(address,mode,locality)
#else
#define MagickCachePrefetch(address,mode,locality) \
magick_unreferenced(address); \
magick_unreferenced(mode); \
magick_unreferenced(locality);
#endif
#if defined(MAGICKCORE_THREAD_SUPPORT)
typedef pthread_mutex_t MagickMutexType;
#elif defined(MAGICKCORE_WINDOWS_SUPPORT)
typedef CRITICAL_SECTION MagickMutexType;
#else
typedef size_t MagickMutexType;
#endif
static inline MagickThreadType GetMagickThreadId(void)
{
#if defined(MAGICKCORE_THREAD_SUPPORT)
return(pthread_self());
#elif defined(MAGICKCORE_WINDOWS_SUPPORT)
return(GetCurrentThreadId());
#else
return(getpid());
#endif
}
static inline size_t GetMagickThreadSignature(void)
{
#if defined(MAGICKCORE_THREAD_SUPPORT)
{
union
{
pthread_t
id;
size_t
signature;
} magick_thread;
magick_thread.signature=0UL;
magick_thread.id=pthread_self();
return(magick_thread.signature);
}
#elif defined(MAGICKCORE_WINDOWS_SUPPORT)
return((size_t) GetCurrentThreadId());
#else
return((size_t) getpid());
#endif
}
static inline MagickBooleanType IsMagickThreadEqual(const MagickThreadType id)
{
#if defined(MAGICKCORE_THREAD_SUPPORT)
if (pthread_equal(id,pthread_self()) != 0)
return(MagickTrue);
#elif defined(MAGICKCORE_WINDOWS_SUPPORT)
if (id == GetCurrentThreadId())
return(MagickTrue);
#else
if (id == getpid())
return(MagickTrue);
#endif
return(MagickFalse);
}
/*
Lightweight OpenMP methods.
*/
static inline size_t GetOpenMPMaximumThreads(void)
{
#if defined(MAGICKCORE_OPENMP_SUPPORT)
return(omp_get_max_threads());
#else
return(1);
#endif
}
static inline int GetOpenMPThreadId(void)
{
#if defined(MAGICKCORE_OPENMP_SUPPORT)
return(omp_get_thread_num());
#else
return(0);
#endif
}
static inline void SetOpenMPMaximumThreads(const int threads)
{
#if defined(MAGICKCORE_OPENMP_SUPPORT)
omp_set_num_threads(threads);
#else
(void) threads;
#endif
}
static inline void SetOpenMPNested(const int value)
{
#if defined(MAGICKCORE_OPENMP_SUPPORT)
omp_set_nested(value);
#else
(void) value;
#endif
}
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif
|
