summaryrefslogtreecommitdiffstats
path: root/libcutils/atomic.c
Commit message (Collapse)AuthorAgeFilesLines
* Second attempt to "Rewrite atomic.h to use stdatomic.h."Hans Boehm2014-11-131-1/+8
| | | | | | | | | | | | This should not be committed until win_sdk and aarch64 builds are fixed in the presence of this CL. This reverts commit 2789faabfa9cdf16902a52a1de3fc4a7ae98efed. We additionally remove uniprocessor support from the earlier CL, thus avoiding a potential compiler code reordering issue. Change-Id: I7207a5ca2efa907a6f757f172d7090a62b2311fe
* Revert "Rewrite atomic.h to use stdatomic.h."Hans Boehm2014-10-041-8/+1
| | | | | | This reverts commit cb344d464009337c283431dec4441b70481d1a49. Change-Id: Ib17cd8d00695062177ce863cedc4ec7148012317
* Rewrite atomic.h to use stdatomic.h.Hans Boehm2014-10-011-1/+8
| | | | | | | Replace atomic-inl.h with a file that just includes atomic.h. Remove platform specific implementations. Change-Id: If16d74fbe0af7836ed8c1296c17e13a2d0d20f64
* Fail-proof the inline directives for SMP atomic operations.Ben Cheng2012-12-071-1/+1
| | | | | | | | | | | | | | | | | | | The various atomic operations are declared as inline in the header files to cut the function call overhead. However, the plain inline keyword is just a suggestion to the compiler which makes its own decision on whether to inline them or not. Worst, if they are not inlined, the -fvisibility-inlines-hidden compiler flag will render them as hidden symbols in the object file. If they are picked up by the linker over the ones supplied in libcutils.so the following warning will be reported: warning: hidden symbol 'android_atomic_inc' in foo.o is referenced by DSO bar.so One way is to add __attribute__((visibility("default"))) to those inline functions to suppress the linker warnings. A better way is to force inlining as with this patch. Change-Id: Ie4fcfdfaaf06f42d351619a0d89671a9df15ca2f
* Define inline atomic operations for x86 and ARM.Carl Shapiro2010-06-231-203/+2
| | | | | | | | This change moves the ARM definitions into GCC extended inline assembler. In addition, the same set of x86 definitions are now shared among all x86 targets. Change-Id: I6e5aa3a413d0af2acbe5d32994983d35a01fdcb3
* Atomic/SMP update, part 2.Andy McFadden2010-05-271-55/+87
| | | | | | | | | | | | | | | | Added new atomic functions, renamed some old ones. Some #defines have been added for backward compatibility. Merged the pre- and post-ARMv6 implementations into a single file. Renamed the semi-private __android_membar_full_smp to USE_SCREAMING_CAPS since that's more appropriate for a macro. Added lots of comments. Note Mac OS X primitives have not been tested. Change-Id: If827260750aeb61ad5c2b760e30658e29dbb26f2
* Atomic/SMP update.Andy McFadden2010-05-201-177/+26
| | | | | | | | | | | | | | | | | | | | | | | Added atomic-inline.h. Added a platform-specific memory barrier call there. Added android_atomic_acquire_cmpxchg() and android_atomic_release_store(). Not tested on Mac OS X or SH. Added memory barrier calls to linux-x86 atomics. Mac OS X has barrier functions already. sh isn't really SMP-ready. linux-arm needs work (to be done in a separate change). Updated the makefile to make the SMP state visible to the code here. Note that host binaries are NOT built with SMP enabled; while our hosts are very likely SMP, it's not worth figuring out e.g. whether it's okay to use the SSE2 mfence instruction or have to use something else. We haven't had barriers enabled in host tools before, so there's probably no need to stat now. Removed quasiatomic 64-bit calls (now part of Dalvik). Change-Id: I49e5e6c8abe70f304cdedb9d7b8e6e65f8925815
* added SuperH atomic support to libcutilsShin-ichiro KAWASAKI2009-08-041-0/+4
|
* Initial ContributionThe Android Open Source Project2008-10-211-0/+335