ImageMagick-7/MagickCore/semaphore.h

0001 /*
0002   Copyright @ 2000 ImageMagick Studio LLC, a non-profit organization
0003   dedicated to making software imaging solutions freely available.
0004
0005   You may not use this file except in compliance with the License.  You may
0006   obtain a copy of the License at
0007
0008     https://imagemagick.org/script/license.php
0009
0010   Unless required by applicable law or agreed to in writing, software
0011   distributed under the License is distributed on an "AS IS" BASIS,
0012   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0013   See the License for the specific language governing permissions and
0014   limitations under the License.
0015
0016   MagickCore methods to lock and unlock semaphores.
0017 */
0018 #ifndef MAGICKCORE_SEMAPHORE_H
0019 #define MAGICKCORE_SEMAPHORE_H
0020
0021 #if defined(__cplusplus) || defined(c_plusplus)
0022 extern "C" {
0023 #endif
0024
0025 typedef struct SemaphoreInfo
0026   SemaphoreInfo;
0027
0028 extern MagickExport SemaphoreInfo
0029   *AcquireSemaphoreInfo(void);
0030
0031 extern MagickExport void
0032   ActivateSemaphoreInfo(SemaphoreInfo **),
0033   LockSemaphoreInfo(SemaphoreInfo *),
0034   RelinquishSemaphoreInfo(SemaphoreInfo **),
0035   UnlockSemaphoreInfo(SemaphoreInfo *);
0036
0037 #if defined(__cplusplus) || defined(c_plusplus)
0038 }
0039 #endif
0040
0041 #endif