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| author | Dmitriy Vyukov <dvyukov@google.com> | 2013-03-05 09:46:52 +0200 |
|---|---|---|
| committer | Dmitriy Vyukov <dvyukov@google.com> | 2013-03-05 09:46:52 +0200 |
| commit | add334986778a09dce559f4d8b7ee69534abd47d (patch) | |
| tree | 9a34043cf6fc15ca93a904ca2dae23099f7ac310 /src/pkg/runtime/runtime.c | |
| parent | 2fe840f4f69bb1013ff5ae8968d8ab8257fb2d22 (diff) | |
| download | go-add334986778a09dce559f4d8b7ee69534abd47d.tar.xz | |
runtime: add atomic xchg64
It will be handy for network poller.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7429048
Diffstat (limited to 'src/pkg/runtime/runtime.c')
| -rw-r--r-- | src/pkg/runtime/runtime.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/pkg/runtime/runtime.c b/src/pkg/runtime/runtime.c index 4d57cbafdf..d3ee2a0ec9 100644 --- a/src/pkg/runtime/runtime.c +++ b/src/pkg/runtime/runtime.c @@ -156,6 +156,10 @@ TestAtomic64(void) runtime·throw("xadd64 failed"); if(runtime·atomicload64(&z64) != (2ull<<40)+2) runtime·throw("xadd64 failed"); + if(runtime·xchg64(&z64, (3ull<<40)+3) != (2ull<<40)+2) + runtime·throw("xchg64 failed"); + if(runtime·atomicload64(&z64) != (3ull<<40)+3) + runtime·throw("xchg64 failed"); } void |