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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-06-01 11:04:50 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-06-01 11:13:47 +0200 |
| commit | f807b84ba0b7f55eead115aa66fba808ba561556 (patch) | |
| tree | fc2d61c5c86c44cc3bacedf893970416d92ffbe7 /cpukit/score/include/rtems/score/thread.h | |
| parent | smptests/smpatomic01: New test cases (diff) | |
| download | rtems-f807b84ba0b7f55eead115aa66fba808ba561556.tar.bz2 | |
score: Fix _Thread_Lock_acquire()
A read-modify-write operation is necessary to read the last value
written.
See for example C11 standard or Power ISA 2.07, Book II: Power ISA
Virtual Environment Architecture, Section 1.6.3 Memory Coherence
Required [Category: Memory Coherence] and Section 1.7.3 Atomic Update.
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