// license that can be found in the LICENSE file.

//go:build plan9 && race

package plan9

import (
	"runtime"
	"unsafe"
)

const raceenabled = true

func raceAcquire(addr unsafe.Pointer) {
	runtime.RaceAcquire(addr)
}

func raceReleaseMerge(addr unsafe.Pointer) {
	runtime.RaceReleaseMerge(addr)
}

func raceReadRange(addr unsafe.Pointer, len int) {
	runtime.RaceReadRange(addr, len)
}

// license that can be found in the LICENSE file.

//go:build windows && race

package windows

import (
	"runtime"
	"unsafe"
)

const raceenabled = true

func raceAcquire(addr unsafe.Pointer) {
	runtime.RaceAcquire(addr)
}

func raceReleaseMerge(addr unsafe.Pointer) {
	runtime.RaceReleaseMerge(addr)
}

func raceReadRange(addr unsafe.Pointer, len int) {
	runtime.RaceReadRange(addr, len)
}

//go:build (darwin && race) || (linux && race) || (freebsd && race)

package unix

import (
	"runtime"
	"unsafe"
)

const raceenabled = true

func raceAcquire(addr unsafe.Pointer) {
	runtime.RaceAcquire(addr)
}

func raceReleaseMerge(addr unsafe.Pointer) {
	runtime.RaceReleaseMerge(addr)
}

func raceReadRange(addr unsafe.Pointer, len int) {
	runtime.RaceReadRange(addr, len)
}

// license that can be found in the LICENSE file.

//go:build windows && !race

package windows

import (
	"unsafe"
)

const raceenabled = false

func raceAcquire(addr unsafe.Pointer) {
}

func raceReleaseMerge(addr unsafe.Pointer) {
}

func raceReadRange(addr unsafe.Pointer, len int) {
}

func raceWriteRange(addr unsafe.Pointer, len int) {

// In terms of the C memory model (C11 §5.1.2.4, §7.17.3),
// RaceAcquire is equivalent to atomic_load(memory_order_acquire).
//
//go:nosplit
func RaceAcquire(addr unsafe.Pointer) {
	raceacquire(addr)
}

// RaceRelease performs a release operation on addr that
// can synchronize with a later RaceAcquire on addr.
//
// In terms of the C memory model, RaceRelease is equivalent to

// license that can be found in the LICENSE file.

//go:build race

package race

import (
	"runtime"
	"unsafe"
)

const Enabled = true

func Acquire(addr unsafe.Pointer) {
	runtime.RaceAcquire(addr)
}

func Release(addr unsafe.Pointer) {
	runtime.RaceRelease(addr)
}

func ReleaseMerge(addr unsafe.Pointer) {
	runtime.RaceReleaseMerge(addr)
}

func Disable() {
	runtime.RaceDisable()

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build plan9 && !race

package plan9

import (
	"unsafe"
)

const raceenabled = false

func raceAcquire(addr unsafe.Pointer) {
}

func raceReleaseMerge(addr unsafe.Pointer) {
}

func raceReadRange(addr unsafe.Pointer, len int) {
}

func raceWriteRange(addr unsafe.Pointer, len int) {

//go:build aix || (darwin && !race) || (linux && !race) || (freebsd && !race) || netbsd || openbsd || solaris || dragonfly || zos

package unix

import (
	"unsafe"
)

const raceenabled = false

func raceAcquire(addr unsafe.Pointer) {
}

func raceReleaseMerge(addr unsafe.Pointer) {
}

func raceReadRange(addr unsafe.Pointer, len int) {
}

func raceWriteRange(addr unsafe.Pointer, len int) {

func racereadrangepc(addr unsafe.Pointer, sz, callerpc, pc uintptr)         { throw("race") }
func racewriterangepc(addr unsafe.Pointer, sz, callerpc, pc uintptr)        { throw("race") }
func raceacquire(addr unsafe.Pointer)                                       { throw("race") }
func raceacquireg(gp *g, addr unsafe.Pointer)                               { throw("race") }

	// used again if callback decide to make syscall.
	winsyscall := mp.winsyscall

	exitsyscall()

	getg().m.winsyscall = winsyscall

	// Note that raceacquire must be called only after exitsyscall has
	// wired this M to a P.
	if raceenabled {
		raceacquire(unsafe.Pointer(&racecgosync))
	}

	// From the garbage collector's perspective, time can move
	// backwards in the sequence above. If there's a callback into