00001 /* 00002 Copyright 1999-2020 ImageMagick Studio LLC, a non-profit organization 00003 dedicated to making software imaging solutions freely available. 00004 00005 You may not use this file except in compliance with the License. You may 00006 obtain a copy of the License at 00007 00008 https://imagemagick.org/script/license.php 00009 00010 Unless required by applicable law or agreed to in writing, software 00011 distributed under the License is distributed on an "AS IS" BASIS, 00012 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 See the License for the specific language governing permissions and 00014 limitations under the License. 00015 00016 MagickCore random generation private methods. 00017 */ 00018 #ifndef MAGICKCORE_RANDOM_PRIVATE_H 00019 #define MAGICKCORE_RANDOM_PRIVATE_H 00020 00021 #include "MagickCore/thread-private.h" 00022 00023 #if defined(__cplusplus) || defined(c_plusplus) 00024 extern "C" { 00025 #endif 00026 00027 extern MagickPrivate double 00028 GetRandomInfoNormalize(const RandomInfo *); 00029 00030 extern MagickPrivate MagickBooleanType 00031 RandomComponentGenesis(void); 00032 00033 extern MagickPrivate unsigned long 00034 *GetRandomInfoSeed(RandomInfo *); 00035 00036 extern MagickPrivate void 00037 RandomComponentTerminus(void); 00038 00039 static inline RandomInfo **DestroyRandomInfoThreadSet( 00040 RandomInfo **random_info) 00041 { 00042 register ssize_t 00043 i; 00044 00045 assert(random_info != (RandomInfo **) NULL); 00046 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++) 00047 if (random_info[i] != (RandomInfo *) NULL) 00048 random_info[i]=DestroyRandomInfo(random_info[i]); 00049 return((RandomInfo **) RelinquishMagickMemory(random_info)); 00050 } 00051 00052 static inline RandomInfo **AcquireRandomInfoThreadSet(void) 00053 { 00054 register ssize_t 00055 i; 00056 00057 RandomInfo 00058 **random_info; 00059 00060 size_t 00061 number_threads; 00062 00063 number_threads=(size_t) GetMagickResourceLimit(ThreadResource); 00064 random_info=(RandomInfo **) AcquireQuantumMemory(number_threads, 00065 sizeof(*random_info)); 00066 if (random_info == (RandomInfo **) NULL) 00067 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); 00068 (void) memset(random_info,0,number_threads*sizeof(*random_info)); 00069 for (i=0; i < (ssize_t) number_threads; i++) 00070 random_info[i]=AcquireRandomInfo(); 00071 return(random_info); 00072 } 00073 00074 #if defined(__cplusplus) || defined(c_plusplus) 00075 } 00076 #endif 00077 00078 #endif