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author | Tianon Gravi <admwiggin@gmail.com> | 2015-01-15 12:50:40 -0700 |
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committer | Tianon Gravi <admwiggin@gmail.com> | 2015-01-15 12:50:40 -0700 |
commit | 2a0db60599fdd75b1bc3e297180fbe1282763759 (patch) | |
tree | 68d43c3e30d9ab961ddf6b7365201ca6b675b253 /src/sync/runtime.go | |
parent | ef33cba3c8de6c431df56503df51fcd3a473c89e (diff) | |
parent | f154da9e12608589e8d5f0508f908a0c3e88a1bb (diff) | |
download | golang-2a0db60599fdd75b1bc3e297180fbe1282763759.tar.gz |
Merge tag 'upstream/1.4' into debian-experimental
* tag 'upstream/1.4':
Imported Upstream version 1.4
Diffstat (limited to 'src/sync/runtime.go')
-rw-r--r-- | src/sync/runtime.go | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/sync/runtime.go b/src/sync/runtime.go new file mode 100644 index 000000000..3b866303a --- /dev/null +++ b/src/sync/runtime.go @@ -0,0 +1,40 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package sync + +import "unsafe" + +// defined in package runtime + +// Semacquire waits until *s > 0 and then atomically decrements it. +// It is intended as a simple sleep primitive for use by the synchronization +// library and should not be used directly. +func runtime_Semacquire(s *uint32) + +// Semrelease atomically increments *s and notifies a waiting goroutine +// if one is blocked in Semacquire. +// It is intended as a simple wakeup primitive for use by the synchronization +// library and should not be used directly. +func runtime_Semrelease(s *uint32) + +// Approximation of syncSema in runtime/sema.go. +type syncSema struct { + lock uintptr + head unsafe.Pointer + tail unsafe.Pointer +} + +// Syncsemacquire waits for a pairing Syncsemrelease on the same semaphore s. +func runtime_Syncsemacquire(s *syncSema) + +// Syncsemrelease waits for n pairing Syncsemacquire on the same semaphore s. +func runtime_Syncsemrelease(s *syncSema, n uint32) + +// Ensure that sync and runtime agree on size of syncSema. +func runtime_Syncsemcheck(size uintptr) +func init() { + var s syncSema + runtime_Syncsemcheck(unsafe.Sizeof(s)) +} |