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 methods to lock and unlock semaphores. 17 */ 18 #ifndef MAGICKCORE_SEMAPHORE_H 19 #define MAGICKCORE_SEMAPHORE_H 20 21 #if defined(__cplusplus) || defined(c_plusplus) 22 extern "C" { 23 #endif 24 25 typedef struct SemaphoreInfo 26 SemaphoreInfo; 27 28 extern MagickExport SemaphoreInfo 29 *AcquireSemaphoreInfo(void); 30 31 extern MagickExport void 32 ActivateSemaphoreInfo(SemaphoreInfo **), 33 LockSemaphoreInfo(SemaphoreInfo *), 34 RelinquishSemaphoreInfo(SemaphoreInfo **), 35 UnlockSemaphoreInfo(SemaphoreInfo *); 36 37 #if defined(__cplusplus) || defined(c_plusplus) 38 } 39 #endif 40 41 #endif 42