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// 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))
}
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