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File: [Pegasus] / pegasus / src / Pegasus / Common / ReadWriteSem.h
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Revision: 1.17, Tue Dec 16 18:56:00 2008 UTC (15 years, 6 months ago) by kumpf Branch: MAIN CVS Tags: preBug9676, postBug9676, TASK_PEP317_1JUNE_2013, TASK-TASK_PEP362_RestfulService_branch-root, TASK-TASK_PEP362_RestfulService_branch-merged_out_from_trunk, TASK-TASK_PEP362_RestfulService_branch-merged_in_to_trunk, TASK-TASK_PEP362_RestfulService_branch-merged_in_from_branch, TASK-TASK_PEP362_RestfulService_branch-branch, TASK-PEP362_RestfulService-root, TASK-PEP362_RestfulService-merged_out_to_branch, TASK-PEP362_RestfulService-merged_out_from_trunk, TASK-PEP362_RestfulService-merged_in_to_trunk, TASK-PEP362_RestfulService-merged_in_from_branch, TASK-PEP362_RestfulService-branch, TASK-PEP348_SCMO-root, TASK-PEP348_SCMO-merged_out_to_branch, TASK-PEP348_SCMO-merged_out_from_trunk, TASK-PEP348_SCMO-merged_in_to_trunk, TASK-PEP348_SCMO-merged_in_from_branch, TASK-PEP348_SCMO-branch, TASK-PEP317_pullop-root, TASK-PEP317_pullop-merged_out_to_branch, TASK-PEP317_pullop-merged_out_from_trunk, TASK-PEP317_pullop-merged_in_to_trunk, TASK-PEP317_pullop-merged_in_from_branch, TASK-PEP317_pullop-branch, RELEASE_2_9_2-RC2, RELEASE_2_9_2-RC1, RELEASE_2_9_2, RELEASE_2_9_1-RC1, RELEASE_2_9_1, RELEASE_2_9_0-RC1, RELEASE_2_9_0, RELEASE_2_9-root, RELEASE_2_9-branch, RELEASE_2_14_1, RELEASE_2_14_0-RC2, RELEASE_2_14_0-RC1, RELEASE_2_14_0, RELEASE_2_14-root, RELEASE_2_14-branch, RELEASE_2_13_0-RC2, RELEASE_2_13_0-RC1, RELEASE_2_13_0-FC, RELEASE_2_13_0, RELEASE_2_13-root, RELEASE_2_13-branch, RELEASE_2_12_1-RC1, RELEASE_2_12_1, RELEASE_2_12_0-RC1, RELEASE_2_12_0-FC, RELEASE_2_12_0, RELEASE_2_12-root, RELEASE_2_12-branch, RELEASE_2_11_2-RC1, RELEASE_2_11_2, RELEASE_2_11_1-RC1, RELEASE_2_11_1, RELEASE_2_11_0-RC1, RELEASE_2_11_0-FC, RELEASE_2_11_0, RELEASE_2_11-root, RELEASE_2_11-branch, RELEASE_2_10_1-RC1, RELEASE_2_10_1, RELEASE_2_10_0-RC2, RELEASE_2_10_0-RC1, RELEASE_2_10_0, RELEASE_2_10-root, RELEASE_2_10-branch, PREAUG25UPDATE, POSTAUG25UPDATE, HPUX_TEST, HEAD, CIMRS_WORK_20130824, BeforeUpdateToHeadOct82011 Changes since 1.16: +1 -1 lines BUG#: 8273 TITLE: Remove trailing space characters DESCRIPTION: Remove meaningless whitespace. |
//%LICENSE//////////////////////////////////////////////////////////////// // // Licensed to The Open Group (TOG) under one or more contributor license // agreements. Refer to the OpenPegasusNOTICE.txt file distributed with // this work for additional information regarding copyright ownership. // Each contributor licenses this file to you under the OpenPegasus Open // Source License; you may not use this file except in compliance with the // License. // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included // in all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // ////////////////////////////////////////////////////////////////////////// // //%///////////////////////////////////////////////////////////////////////////// #ifndef Pegasus_ReadWriteSem_h #define Pegasus_ReadWriteSem_h #include <Pegasus/Common/Config.h> #include <Pegasus/Common/Linkage.h> #include <Pegasus/Common/Semaphore.h> #include <Pegasus/Common/Mutex.h> #include <Pegasus/Common/AtomicInt.h> PEGASUS_NAMESPACE_BEGIN /** Every platform should decide which implementation for read/write locks should be used in OpenPegasus by defining one of the following: 1.) PEGASUS_USE_POSIX_RWLOCK - POSIX standard based implementation 2.) PEGASUS_USE_SEMAPHORE_RWLOCK - mutex based implementation The definition for each platform can be found in the according platform header file: pegasus/src/Pegasus/Common/Platform_<Platform>.h */ #if !defined(PEGASUS_USE_POSIX_RWLOCK) && !defined(PEGASUS_USE_SEMAPHORE_RWLOCK) # error "Unsupported platform: ReadWriteSem.h implementation type missing" #endif //============================================================================== // // ReadWriteSemRep // //============================================================================== #ifdef PEGASUS_USE_POSIX_RWLOCK struct ReadWriteSemRep { pthread_rwlock_t rwlock; }; #endif /* PEGASUS_USE_POSIX_RWLOCK */ #ifdef PEGASUS_USE_SEMAPHORE_RWLOCK struct ReadWriteSemRep { Semaphore _rlock; Mutex _wlock; Mutex _internal_lock; AtomicInt _readers; AtomicInt _writers; ReadWriteSemRep() : _rlock(10), _wlock(), _internal_lock(), _readers(0), _writers(0) { } }; #endif /* PEGASUS_USE_POSIX_RWLOCK */ //============================================================================== // // ReadWriteSem // //============================================================================== class PEGASUS_COMMON_LINKAGE ReadWriteSem { public: ReadWriteSem(); ~ReadWriteSem(); void waitRead(); void waitWrite(); void unlockRead(); void unlockWrite(); private: ReadWriteSemRep _rwlock; }; //============================================================================== // // ReadLock // //============================================================================== class ReadLock { public: ReadLock(ReadWriteSem& rwsem) : _rwsem(rwsem) { _rwsem.waitRead(); } ~ReadLock() { _rwsem.unlockRead(); } private: ReadWriteSem & _rwsem; }; //============================================================================== // // WriteLock // //============================================================================== class WriteLock { public: WriteLock(ReadWriteSem& rwsem) : _rwsem(rwsem) { _rwsem.waitWrite(); } ~WriteLock() { _rwsem.unlockWrite(); } private: ReadWriteSem & _rwsem; }; PEGASUS_NAMESPACE_END #endif /* Pegasus_ReadWriteSem_h */
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