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path: root/MdePkg/Library/BaseSynchronizationLib/Synchronization.c
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* MdePkg: Replace BSD License with BSD+Patent LicenseMichael D Kinney2019-04-091-7/+1
| | | | | | | | | | | | | | | | | | | | https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
* MdePkg/SynchronizationLib: fix Interlocked[De|In]crement return valueRuiyu Ni2018-09-251-4/+2
| | | | | | | | | | | | | | | | | | | | | REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1197 Today's InterlockedIncrement()/InterlockedDecrement() guarantees to perform atomic increment/decrement but doesn't guarantee the return value equals to the new value. The patch fixes the behavior to use "XADD" instruction to guarantee the return value equals to the new value. The patch calls intrinsic functions for MSVC tool chain, calls the NASM implementation for INTEL tool chain and calls GCC inline assembly implementation (GccInline.c) for GCC tool chain. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com>
* MdePkg: Clean up source filesLiming Gao2018-06-281-2/+2
| | | | | | | | | 1. Do not use tab characters 2. No trailing white space in one line 3. All files must end with CRLF Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao <liming.gao@intel.com>
* MdePkg/BaseSynchronizationLib: Add volatile Interlocked*() APIsMichael Kinney2016-11-171-8/+8
| | | | | | | | | | | | | | | | | | The SpinLock functions in the SynchronicationLib use volatile parameters to keep compiler from optimizing these functions too much. The volatile keyword is missing from the Interlocked*() functions in this same library instance. Update the library instance to consistently use volatile on all functions in the SynchronizationLib class. Cc: Liming Gao <liming.gao@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Andrew Fish <afish@apple.com> Cc: Jeff Fan <jeff.fan@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael Kinney <michael.d.kinney@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
* MdePkg/BaseSynchronizationLib: Do not check timeout if lock releasedJeff Fan2016-04-051-6/+6
| | | | | | | | | | | | | | Current AcquireSpinLock() will check if timeout happens when PcdSpinLockTimeout is not zero, even though the spin lock is already released. It may do unnecessary operation to read timer's counter. This update is trying to acquire spin lock firstly. If it could be acquired successfully, needn't to check timeout at all. Cc: Michael Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <liming.gao@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeff Fan <jeff.fan@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
* MdePkg/BaseSynchronizationLib: Add InterlockedCompareExchange16Ard Biesheuvel2015-02-281-0/+31
| | | | | | | | | | | | | | | This implements the function InterlockedCompareExchange16 () for all architectures, using architecture and toolchain specific intrinsics or primitive assembler instructions. Contributed-under: TianoCore Contribution Agreement 1.0 Reviewed-by: Olivier Martin <olivier.martin@arm.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Michael Kinney <michael.d.kinney@intel.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16966 6f19259b-4bc3-4df7-8a09-765794883524
* Clarify alignment of GetSpinLockProperties() is byte alignment.lgao42012-03-071-3/+3
| | | | | | | Signed-off-by: lgao4 Reviewed-by: mdkinney git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13086 6f19259b-4bc3-4df7-8a09-765794883524
* Minor grammatical work--mostly adding periods. Items with ONLY period added ↵myronporter2010-06-251-4/+4
| | | | | | did not have the heading date changed, but Items with content changes had heading copyright dates updated. Sending separately a list of files missing Doxygen @param and @return information. (PENDING) git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10604 6f19259b-4bc3-4df7-8a09-765794883524
* Update the copyright notice formathhtian2010-04-231-2/+2
| | | | git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10413 6f19259b-4bc3-4df7-8a09-765794883524
* Split out Synchronization Library from Base Librarymdkinney2009-01-301-0/+387
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7377 6f19259b-4bc3-4df7-8a09-765794883524
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