MagickCore  6.9.12-67
Convert, Edit, Or Compose Bitmap Images
 All Data Structures
random-private.h
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 random generation private methods.
17 */
18 #ifndef MAGICKCORE_RANDOM_PRIVATE_H
19 #define MAGICKCORE_RANDOM_PRIVATE_H
20 
21 #include "magick/thread-private.h"
22 
23 #if defined(__cplusplus) || defined(c_plusplus)
24 extern "C" {
25 #endif
26 
27 static inline RandomInfo **DestroyRandomInfoTLS(RandomInfo **random_info)
28 {
29  ssize_t
30  i;
31 
32  assert(random_info != (RandomInfo **) NULL);
33  for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
34  if (random_info[i] != (RandomInfo *) NULL)
35  random_info[i]=DestroyRandomInfo(random_info[i]);
36  return((RandomInfo **) RelinquishAlignedMemory(random_info));
37 }
38 
39 static inline RandomInfo **AcquireRandomInfoTLS(void)
40 {
41  ssize_t
42  i;
43 
45  **random_info;
46 
47  size_t
48  number_threads;
49 
50  number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
51  random_info=(RandomInfo **) AcquireAlignedMemory(number_threads,
52  sizeof(*random_info));
53  if (random_info == (RandomInfo **) NULL)
54  ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
55  (void) memset(random_info,0,number_threads*sizeof(*random_info));
56  for (i=0; i < (ssize_t) number_threads; i++)
57  random_info[i]=AcquireRandomInfo();
58  return(random_info);
59 }
60 
61 extern MagickExport unsigned long
62  *GetRandomInfoSeed(RandomInfo *);
63 
64 extern MagickExport double
65  GetRandomInfoNormalize(const RandomInfo *);
66 
67 #if defined(__cplusplus) || defined(c_plusplus)
68 }
69 #endif
70 
71 #endif