1 /* 2 Copyright 1999-2016 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. 6 obtain a copy of the License at 7 8 http://www.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 "MagickCore/thread-private.h" 22 23 #if defined(__cplusplus) || defined(c_plusplus) 24 extern "C" { 25 #endif 26 27 extern MagickPrivate double 28 GetRandomInfoNormalize(const RandomInfo *); 29 30 extern MagickPrivate MagickBooleanType 31 RandomComponentGenesis(void); 32 33 extern MagickPrivate unsigned long 34 *GetRandomInfoSeed(RandomInfo *); 35 36 extern MagickPrivate void 37 RandomComponentTerminus(void); 38 39 static inline RandomInfo **DestroyRandomInfoThreadSet( 40 RandomInfo **random_info) 41 { 42 register ssize_t 43 i; 44 45 assert(random_info != (RandomInfo **) NULL); 46 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++) 47 if (random_info[i] != (RandomInfo *) NULL) 48 random_info[i]=DestroyRandomInfo(random_info[i]); 49 return((RandomInfo **) RelinquishMagickMemory(random_info)); 50 } 51 52 static inline RandomInfo **AcquireRandomInfoThreadSet(void) 53 { 54 register ssize_t 55 i; 56 57 RandomInfo 58 **random_info; 59 60 size_t 61 number_threads; 62 63 number_threads=(size_t) GetMagickResourceLimit(ThreadResource); 64 random_info=(RandomInfo **) AcquireQuantumMemory(number_threads, 65 sizeof(*random_info)); 66 if (random_info == (RandomInfo **) NULL) 67 return((RandomInfo **) NULL); 68 (void) ResetMagickMemory(random_info,0,number_threads*sizeof(*random_info)); 69 for (i=0; i < (ssize_t) number_threads; i++) 70 { 71 random_info[i]=AcquireRandomInfo(); 72 if (random_info[i] == (RandomInfo *) NULL) 73 return(DestroyRandomInfoThreadSet(random_info)); 74 } 75 return(random_info); 76 } 77 78 #if defined(__cplusplus) || defined(c_plusplus) 79 } 80 #endif 81 82 #endif 83
