semaphore.h

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00001 /*
00002   Copyright 1999-2019 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 methods to lock and unlock semaphores.
00017 */
00018 #ifndef MAGICKCORE_SEMAPHORE_H
00019 #define MAGICKCORE_SEMAPHORE_H
00020 
00021 #if defined(__cplusplus) || defined(c_plusplus)
00022 extern "C" {
00023 #endif
00024 
00025 typedef struct SemaphoreInfo
00026   SemaphoreInfo;
00027 
00028 extern MagickExport MagickBooleanType
00029   SemaphoreComponentGenesis(void);
00030 
00031 extern MagickExport SemaphoreInfo
00032   *AllocateSemaphoreInfo(void);
00033 
00034 extern MagickExport void
00035   ActivateSemaphoreInfo(SemaphoreInfo **),
00036   DestroySemaphoreInfo(SemaphoreInfo **),
00037   LockSemaphoreInfo(SemaphoreInfo *),
00038   SemaphoreComponentTerminus(void),
00039   UnlockSemaphoreInfo(SemaphoreInfo *);
00040 
00041 #if defined(__cplusplus) || defined(c_plusplus)
00042 }
00043 #endif
00044 
00045 #endif

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