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| author | Ian Lance Taylor <iant@golang.org> | 2019-11-04 20:45:48 -0800 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2019-11-05 05:22:07 +0000 |
| commit | 3c0fbeea7d57fe474865061d5c0bf3b7a01877c8 (patch) | |
| tree | 06c0fcabf26e0c17f8b9b1c3624742b14a616bbb /src/runtime/export_futex_test.go | |
| parent | d51f7f39704fd8517739bcd6ad743741983b2234 (diff) | |
| download | go-3c0fbeea7d57fe474865061d5c0bf3b7a01877c8.tar.gz go-3c0fbeea7d57fe474865061d5c0bf3b7a01877c8.zip | |
runtime: disable preemption during test calls to futexsleep
Fixes #35347
Change-Id: If7380f29e97a5abe86cdd5e2853323de7997ccfc
Reviewed-on: https://go-review.googlesource.com/c/go/+/205378
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Diffstat (limited to 'src/runtime/export_futex_test.go')
| -rw-r--r-- | src/runtime/export_futex_test.go | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/runtime/export_futex_test.go b/src/runtime/export_futex_test.go index 5e272364d1..a727a93114 100644 --- a/src/runtime/export_futex_test.go +++ b/src/runtime/export_futex_test.go @@ -6,5 +6,14 @@ package runtime -var Futexsleep = futexsleep var Futexwakeup = futexwakeup + +//go:nosplit +func Futexsleep(addr *uint32, val uint32, ns int64) { + // Temporarily disable preemption so that a preemption signal + // doesn't interrupt the system call. + poff := debug.asyncpreemptoff + debug.asyncpreemptoff = 1 + futexsleep(addr, val, ns) + debug.asyncpreemptoff = poff +} |