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File: [Pegasus] / pegasus / src / Pegasus / Common / Attic / SpinLock_HPUX_IA64_ACC.h
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Revision: 1.3, Mon Jan 30 16:17:08 2006 UTC (18 years, 5 months ago) by karl Branch: MAIN CVS Tags: TASK_PEP233_EmbeddedInstSupport-merge_out_trunk, TASK_BUG_5314_IPC_REFACTORING_ROOT, TASK_BUG_5191_QUEUE_CONSOLIDATION_ROOT, TASK_BUG_5191_QUEUE_CONSOLIDATION_BRANCH, TASK-PEP250_RPMProvider-root, TASK-PEP250_RPMProvider-merged_out_to_branch, TASK-PEP250_RPMProvider-merged_out_from_trunk, TASK-PEP250_RPMProvider-merged_in_to_trunk, TASK-PEP250_RPMProvider-merged_in_from_branch, TASK-PEP250_RPMProvider-branch, TASK-PEP245_CimErrorInfrastructure-root, TASK-PEP245_CimErrorInfrastructure-merged_out_to_branch, TASK-PEP245_CimErrorInfrastructure-merged_out_from_trunk, TASK-PEP245_CimErrorInfrastructure-merged_in_to_trunk, TASK-PEP245_CimErrorInfrastructure-merged_in_from_branch, TASK-PEP245_CimErrorInfrastructure-branch, TASK-PEP241_OpenPegasusStressTests-root, TASK-PEP241_OpenPegasusStressTests-merged_out_to_branch, TASK-PEP241_OpenPegasusStressTests-merged_out_from_trunk, TASK-PEP241_OpenPegasusStressTests-merged_in_to_trunk, TASK-PEP241_OpenPegasusStressTests-merged_in_from_branch, TASK-PEP241_OpenPegasusStressTests-branch, TASK-BUG4011_WinLocalConnect-root, TASK-BUG4011_WinLocalConnect-merged_out_to_branch, TASK-BUG4011_WinLocalConnect-merged_out_from_trunk, TASK-BUG4011_WinLocalConnect-merged_in_to_trunk, TASK-BUG4011_WinLocalConnect-merged_in_from_branch, TASK-BUG4011_WinLocalConnect-branch, RELEASE_2_5_5-RC2, RELEASE_2_5_5-RC1, RELEASE_2_5_5, RELEASE_2_5_4-RC2, RELEASE_2_5_4-RC1, RELEASE_2_5_4, RELEASE_2_5_3-RC1, RELEASE_2_5_3, RELEASE_2_5_2-RC1, RELEASE_2_5_2, RELEASE_2_5_1-RC1, RELEASE_2_5_1, RELEASE_2_5-root, RELEASE_2_5-branch Branch point for: TASK_BUG_5314_IPC_REFACTORING_BRANCH Changes since 1.2: +4 -2 lines BUG#: 4691 TITLE: Update Licenses to 2006 DESCRIPTION: Updates most of the licenses to 2006. The slp_client directories are excluded for the moment pending discussion. This change has passed unit and system tests. Note that this changes just about EVERY file in Pegasus. |
//%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. // //============================================================================== // // Author: Mike Brasher, Inova Europe (mike-brasher@austin.rr.com) // //%///////////////////////////////////////////////////////////////////////////// #ifndef Pegasus_SpinLock_LINUX_IX86_GNU_h #define Pegasus_SpinLock_LINUX_IX86_GNU_h #include <Pegasus/Common/Config.h> #include <machine/sys/inline.h> PEGASUS_NAMESPACE_BEGIN struct SpinLock { // Available when zero. volatile Uint32 lock; }; inline void SpinLockCreate(SpinLock& x) { x.lock = 0; } inline void SpinLockDestroy(SpinLock& x) { } inline void SpinLockLock(SpinLock& x) { // Spin until we are able to obtain a lock. for (;;) { // Wait until the lock is zero (unlocked) and then try to grab it // before some other thread gets it. if (x.lock == 0) { // Try to grab the lock (by performing an increment and test // operation). uint32 tmp = _Asm_fetchadd( (_Asm_fasz)_FASZ_W, (_Asm_sem)_SEM_ACQ, (volatile uint32*)&x.lock, (int)-1, (_Asm_ldhint)LDHINT_NONE); // If we got the lock then the old value was zero (available). // The lock is now one or greater (other threads may have // incremented as well). if (tmp == 0) return; // Some other thread must have gotten it before we did (tmp will // be greater than one since some other thread incremented it too). // So decrement the lock and keep trying. _Asm_fetchadd( (_Asm_fasz)_FASZ_W, (_Asm_sem)_SEM_ACQ, (volatile uint32*)&x.lock, (int)-1, (_Asm_ldhint)LDHINT_NONE); } } } inline void SpinLockUnlock(SpinLock& x) { _Asm_fetchadd( (_Asm_fasz)_FASZ_W, (_Asm_sem)_SEM_ACQ, (volatile uint32*)&x.lock, (int)-1, (_Asm_ldhint)LDHINT_NONE); } PEGASUS_NAMESPACE_END #endif /* Pegasus_SpinLock_LINUX_IX86_GNU_h */
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