Return to SpinLock.cpp CVS log | Up to [Pegasus] / pegasus / src / Pegasus / Common |
File: [Pegasus] / pegasus / src / Pegasus / Common / SpinLock.cpp
(download)
Revision: 1.12, Fri Nov 10 18:14:58 2006 UTC (17 years, 7 months ago) by kumpf Branch: MAIN CVS Tags: TASK_PEP328_SOLARIS_NEVADA_PORT, TASK-PEP328_SOLARIS_NEVADA_PORT_v2-root, TASK-PEP328_SOLARIS_NEVADA_PORT_v2-branch, TASK-PEP328_SOLARIS_NEVADA_PORT-root, TASK-PEP328_SOLARIS_NEVADA_PORT-branch, TASK-PEP328_SOLARIS_IX86_CC_PORT-root, TASK-PEP328_SOLARIS_IX86_CC_PORT-branch-v2, TASK-PEP328_SOLARIS_IX86_CC_PORT-branch, TASK-PEP311_WSMan-root, TASK-PEP311_WSMan-branch, TASK-PEP305_VXWORKS-root, TASK-PEP305_VXWORKS-branch-pre-solaris-port, TASK-PEP305_VXWORKS-branch-post-solaris-port, TASK-PEP305_VXWORKS-branch-beta2, TASK-PEP305_VXWORKS-branch, TASK-PEP305_VXWORKS-2008-10-23, TASK-PEP291_IPV6-root, TASK-PEP291_IPV6-branch, TASK-PEP286_PRIVILEGE_SEPARATION-root, TASK-PEP286_PRIVILEGE_SEPARATION-branch, TASK-PEP274_dacim-root, TASK-PEP274_dacim-merged_out_to_branch, TASK-PEP274_dacim-merged_out_from_trunk, TASK-PEP274_dacim-merged_in_to_trunk, TASK-PEP274_dacim-merged_in_from_branch, TASK-PEP274_dacim-branch, TASK-Bug2102_RCMPIWindows-root, TASK-Bug2102_RCMPIWindows-merged_out_to_branch, TASK-Bug2102_RCMPIWindows-merged_out_from_trunk, TASK-Bug2102_RCMPIWindows-merged_in_to_trunk, TASK-Bug2102_RCMPIWindows-merged_in_from_branch, TASK-Bug2102_RCMPIWindows-branch, TASK-Bug2102Final-root, TASK-Bug2102Final-merged_out_to_branch, TASK-Bug2102Final-merged_out_from_trunk, TASK-Bug2102Final-merged_in_to_trunk, TASK-Bug2102Final-merged_in_from_branch, TASK-Bug2102Final-branch, TASK-BUG7240-root, TASK-BUG7240-branch, TASK-BUG7146_SqlRepositoryPrototype-root, TASK-BUG7146_SqlRepositoryPrototype-merged_out_to_branch, TASK-BUG7146_SqlRepositoryPrototype-merged_out_from_trunk, TASK-BUG7146_SqlRepositoryPrototype-merged_in_to_trunk, TASK-BUG7146_SqlRepositoryPrototype-merged_in_from_branch, TASK-BUG7146_SqlRepositoryPrototype-branch, RELEASE_2_8_2-RC1, RELEASE_2_8_2, RELEASE_2_8_1-RC1, RELEASE_2_8_1, RELEASE_2_8_0_BETA, RELEASE_2_8_0-RC2, RELEASE_2_8_0-RC1, RELEASE_2_8_0-FC, RELEASE_2_8_0, RELEASE_2_8-root, RELEASE_2_8-branch, RELEASE_2_7_3-RC1, RELEASE_2_7_3, RELEASE_2_7_2-RC1, RELEASE_2_7_2, RELEASE_2_7_1-RC1, RELEASE_2_7_1, RELEASE_2_7_0-RC1, RELEASE_2_7_0-BETA, RELEASE_2_7_0, RELEASE_2_7-root, RELEASE_2_7-branch, RELEASE_2_6_3-RC2, RELEASE_2_6_3-RC1, RELEASE_2_6_3, RELEASE_2_6_2-RC1, RELEASE_2_6_2, RELEASE_2_6_1-RC1, RELEASE_2_6_1, RELEASE_2_6_0-RC1, RELEASE_2_6_0-FC, RELEASE_2_6_0, RELEASE_2_6-root, RELEASE_2_6-branch-clean, RELEASE_2_6-branch, PEP286_PRIVILEGE_SEPARATION_ROOT, PEP286_PRIVILEGE_SEPARATION_CODE_FREEZE, PEP286_PRIVILEGE_SEPARATION_BRANCH, PEP286_PRIVILEGE_SEPARATION_1, Makefile Changes since 1.11: +0 -4 lines BUG#: 5840 TITLE: Common modules do not meet chksrc requirements DESCRIPTION: Remove tab characters and author names and shorten lines that are wider than 80 characters. |
//%2006//////////////////////////////////////////////////////////////////////// // // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems. // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.; // IBM Corp.; EMC Corporation, The Open Group. // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.; // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group. // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.; // EMC Corporation; VERITAS Software Corporation; The Open Group. // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.; // EMC Corporation; Symantec Corporation; The Open Group. // // 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. // //============================================================================== // //%///////////////////////////////////////////////////////////////////////////// #include "Network.h" #if defined(PEGASUS_OS_SOLARIS) # include <sys/types.h> # include <unistd.h> #endif #include "SpinLock.h" #if !defined(PEGASUS_OS_VMS) && !defined(PEGASUS_OS_TYPE_WINDOWS) # define PEGASUS_SPINLOCK_USE_PTHREADS #endif #ifdef PEGASUS_SPINLOCK_USE_PTHREADS # include <pthread.h> #else # include "Mutex.h" #endif PEGASUS_NAMESPACE_BEGIN SpinLock spinLockPool[PEGASUS_NUM_SHARED_SPIN_LOCKS]; int spinLockPoolInitialized; #ifdef PEGASUS_SPINLOCK_USE_PTHREADS pthread_mutex_t _spinLockInitMutex = PTHREAD_MUTEX_INITIALIZER; #else static Mutex _spinLockInitMutex; #endif void SpinLockCreatePool() { // There's no need to check spinLockPoolInitialized before locking the // mutex, because the caller can check the flag before calling this // function. #ifdef PEGASUS_SPINLOCK_USE_PTHREADS pthread_mutex_lock(&_spinLockInitMutex); #else _spinLockInitMutex.lock(); #endif if (spinLockPoolInitialized == 0) { for (size_t i = 0; i < PEGASUS_NUM_SHARED_SPIN_LOCKS; i++) SpinLockCreate(spinLockPool[i]); spinLockPoolInitialized = 1; } #ifdef PEGASUS_SPINLOCK_USE_PTHREADS pthread_mutex_unlock(&_spinLockInitMutex); #else _spinLockInitMutex.unlock(); #endif } #if defined(PEGASUS_SPINLOCK_USE_PTHREADS) // This function is called prior to forking. We must obtain a lock // on every mutex that the child will inherit. These will remain locked // until they are unlocked (by _unlockSpinLockPool()). This prevents a // child process from waiting indefinitely on a mutex that was locked by // another thread in the parent process during the fork. extern "C" void _lockSpinLockPool() { // Initialize the spinlock pool if not already done. if (spinLockPoolInitialized == 0) SpinLockCreatePool(); pthread_mutex_lock(&_spinLockInitMutex); for (size_t i = 0; i < PEGASUS_NUM_SHARED_SPIN_LOCKS; i++) SpinLockLock(spinLockPool[i]); } // This function is called after forking. It unlocks the mutexes that // were locked by _lockSpinLockPool() before the fork. extern "C" void _unlockSpinLockPool() { pthread_mutex_unlock(&_spinLockInitMutex); for (size_t i = 0; i < PEGASUS_NUM_SHARED_SPIN_LOCKS; i++) SpinLockUnlock(spinLockPool[i]); } class SpinLockInitializer { public: SpinLockInitializer() { // ATTN: Temporary workaround for Bug 4559 #if defined(PEGASUS_OS_HPUX) || defined(PEGASUS_OS_SOLARIS) pthread_atfork( _lockSpinLockPool, _unlockSpinLockPool, _unlockSpinLockPool); #endif } }; static SpinLockInitializer spinLockInitializer; #endif /* PEGASUS_SPINLOCK_USE_PTHREADS */ PEGASUS_NAMESPACE_END
No CVS admin address has been configured |
Powered by ViewCVS 0.9.2 |