0f18e1eda2
MdePkg/BaseSynchronizationLib: Do not check timeout if lock released
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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 >
2016-04-05 14:07:15 +08:00
9b89163eea
MdePkg/BaseSynchronizationLib: Add InterlockedCompareExchange16
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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
2015-02-28 20:31:54 +00:00
744265eb0a
Clarify alignment of GetSpinLockProperties() is byte alignment.
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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
2012-03-07 01:40:44 +00:00
2fc59a003e
Minor grammatical work--mostly adding periods. Items with ONLY period added 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)
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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10604 6f19259b-4bc3-4df7-8a09-765794883524
2010-06-25 21:56:02 +00:00
e2d9bfb2bc
Update the copyright notice format
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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10413 6f19259b-4bc3-4df7-8a09-765794883524
2010-04-23 16:26:26 +00:00
720d3c5fb3
Split out Synchronization Library from Base Library
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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7377 6f19259b-4bc3-4df7-8a09-765794883524
2009-01-30 00:45:13 +00:00
