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

//go:build gccgo && linux && amd64

package unix

import "syscall"

//extern gettimeofday
func realGettimeofday(*Timeval, *byte) int32

func gettimeofday(tv *Timeval) (err syscall.Errno) {
	r := realGettimeofday(tv, nil)
	if r < 0 {
		return syscall.GetErrno()
	}
	return 0

//go:cgo_import_dynamic fstat$INODE64 fstat$INODE64 ""
//go:cgo_import_dynamic ftruncate ftruncate ""
//go:cgo_import_dynamic getpid getpid ""
//go:cgo_import_dynamic getrlimit getrlimit ""
//go:cgo_import_dynamic gettimeofday gettimeofday ""
//go:cgo_import_dynamic getuid getuid ""
//go:cgo_import_dynamic grantpt grantpt ""
//go:cgo_import_dynamic ioctl ioctl ""
//go:cgo_import_dynamic isatty isatty ""

//go:cgo_import_dynamic fstat fstat ""
//go:cgo_import_dynamic ftruncate ftruncate ""
//go:cgo_import_dynamic getpid getpid ""
//go:cgo_import_dynamic getrlimit getrlimit ""
//go:cgo_import_dynamic gettimeofday gettimeofday ""
//go:cgo_import_dynamic getuid getuid ""
//go:cgo_import_dynamic grantpt grantpt ""
//go:cgo_import_dynamic ioctl ioctl ""
//go:cgo_import_dynamic isatty isatty ""
//go:cgo_import_dynamic lstat lstat ""

}

static void* spin(void *arg) {
	size_t n;
	struct timeval tvstart, tvnow;
	int diff;
	void *prev;
	void *cur;

	prev = NULL;
	gettimeofday(&tvstart, NULL);
	for (n = 0; n < 1<<20; n++) {
		cur = malloc(n);
		free(prev);
		prev = cur;

		gettimeofday(&tvnow, NULL);
		diff = (tvnow.tv_sec - tvstart.tv_sec) * 1000 * 1000 + (tvnow.tv_usec - tvstart.tv_usec);

		// Profile frequency is 100Hz so we should definitely

//sys	futimesat(dirfd int, path string, times *[2]Timeval) (err error)

//go:noescape
func gettimeofday(tv *Timeval) (err Errno)

func Gettimeofday(tv *Timeval) (err error) {
	errno := gettimeofday(tv)
	if errno != 0 {
		return errno
	}
	return nil
}

func Time(t *Time_t) (tt Time_t, err error) {
	var tv Timeval
	errno := gettimeofday(&tv)
	if errno != 0 {
		return 0, errno
	}
	if t != nil {
		*t = Time_t(tv.Sec)

#include <stdlib.h>
#include <sys/time.h>

void spin() {
	size_t n;
	struct timeval tvstart, tvnow;
	int diff;
	void *prev = NULL, *cur;

	gettimeofday(&tvstart, NULL);
	for (n = 0; n < 1<<20; n++) {
		cur = malloc(n);
		free(prev);
		prev = cur;

		gettimeofday(&tvnow, NULL);
		diff = (tvnow.tv_sec - tvstart.tv_sec) * 1000 * 1000 + (tvnow.tv_usec - tvstart.tv_usec);

		// Profile frequency is 100Hz so we should definitely

	MOVQ	a1+8(FP), DI
	MOVQ	a2+16(FP), SI
	MOVQ	a3+24(FP), DX
	MOVQ	trap+0(FP), AX	// syscall entry
	SYSCALL
	MOVQ	AX, r1+32(FP)
	MOVQ	DX, r2+40(FP)
	RET

// func gettimeofday(tv *Timeval) (err uintptr)
TEXT ·gettimeofday(SB),NOSPLIT,$0-16
	MOVQ	tv+0(FP), DI
	MOVQ	$0, SI
	MOVQ	runtime·vdsoGettimeofdaySym(SB), AX
	TESTQ   AX, AX
	JZ fallback
	CALL	AX
ret:
	CMPQ	AX, $0xfffffffffffff001
	JLS	ok7

//sys	futimesat(dirfd int, path string, times *[2]Timeval) (err error)

func Gettimeofday(tv *Timeval) (err error) {
	errno := gettimeofday(tv)
	if errno != 0 {
		return errno
	}
	return nil
}

func Time(t *Time_t) (tt Time_t, err error) {
	var tv Timeval
	errno := gettimeofday(&tv)
	if errno != 0 {
		return 0, errno
	}
	if t != nil {
		*t = Time_t(tv.Sec)
	}

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

//go:build amd64 && linux && gc

package unix

import "syscall"

//go:noescape

//sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
//sys	mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)

//sysnb	Gettimeofday(tv *Timeval) (err error)

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}
}