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37 lines
1.2 KiB
Go
37 lines
1.2 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package sync
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import "unsafe"
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// defined in package runtime
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// Semacquire waits until *s > 0 and then atomically decrements it.
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// It is intended as a simple sleep primitive for use by the synchronization
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// library and should not be used directly.
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func runtime_Semacquire(s *uint32)
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// Semrelease atomically increments *s and notifies a waiting goroutine
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// if one is blocked in Semacquire.
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// It is intended as a simple wakeup primitive for use by the synchronization
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// library and should not be used directly.
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func runtime_Semrelease(s *uint32)
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// Opaque representation of SyncSema in runtime/sema.goc.
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type syncSema [3]uintptr
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// Syncsemacquire waits for a pairing Syncsemrelease on the same semaphore s.
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func runtime_Syncsemacquire(s *syncSema)
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// Syncsemrelease waits for n pairing Syncsemacquire on the same semaphore s.
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func runtime_Syncsemrelease(s *syncSema, n uint32)
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// Ensure that sync and runtime agree on size of syncSema.
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func runtime_Syncsemcheck(size uintptr)
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func init() {
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var s syncSema
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runtime_Syncsemcheck(unsafe.Sizeof(s))
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}
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