diff options
author | Michael Stapelberg <stapelberg@debian.org> | 2014-06-19 09:23:02 +0200 |
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committer | Michael Stapelberg <stapelberg@debian.org> | 2014-06-19 09:23:02 +0200 |
commit | 8fcc691d6fa80c9ddf38bf0d34b803bab0e421d5 (patch) | |
tree | ba71646a10b518372d110532d86fcf0b98edc14f /src/pkg/runtime/norace_test.go | |
parent | 3bb719bbf3cdb97b3901f3baaa2da9d02a5c3cdb (diff) | |
parent | 8a39ee361feb9bf46d728ff1ba4f07ca1d9610b1 (diff) | |
download | golang-8fcc691d6fa80c9ddf38bf0d34b803bab0e421d5.tar.gz |
Merge tag 'upstream/1.3' into debian-sid
Upstream version 1.3
Diffstat (limited to 'src/pkg/runtime/norace_test.go')
-rw-r--r-- | src/pkg/runtime/norace_test.go | 36 |
1 files changed, 12 insertions, 24 deletions
diff --git a/src/pkg/runtime/norace_test.go b/src/pkg/runtime/norace_test.go index a3d5b0086..3b171877a 100644 --- a/src/pkg/runtime/norace_test.go +++ b/src/pkg/runtime/norace_test.go @@ -9,7 +9,6 @@ package runtime_test import ( "runtime" - "sync/atomic" "testing" ) @@ -31,28 +30,17 @@ func BenchmarkSyscallExcessWork(b *testing.B) { } func benchmarkSyscall(b *testing.B, work, excess int) { - const CallsPerSched = 1000 - procs := runtime.GOMAXPROCS(-1) * excess - N := int32(b.N / CallsPerSched) - c := make(chan bool, procs) - for p := 0; p < procs; p++ { - go func() { - foo := 42 - for atomic.AddInt32(&N, -1) >= 0 { - runtime.Gosched() - for g := 0; g < CallsPerSched; g++ { - runtime.Entersyscall() - for i := 0; i < work; i++ { - foo *= 2 - foo /= 2 - } - runtime.Exitsyscall() - } + b.SetParallelism(excess) + b.RunParallel(func(pb *testing.PB) { + foo := 42 + for pb.Next() { + runtime.Entersyscall() + for i := 0; i < work; i++ { + foo *= 2 + foo /= 2 } - c <- foo == 42 - }() - } - for p := 0; p < procs; p++ { - <-c - } + runtime.Exitsyscall() + } + _ = foo + }) } |