SYS_FACCESSAT              = 509 // { int faccessat(int fd, char *path, int amode, \
	SYS_MQ_OPEN                = 510 // { mqd_t mq_open(const char * name, int oflag, \
	SYS_MQ_CLOSE               = 511 // { int mq_close(mqd_t mqdes); }
	SYS_MQ_UNLINK              = 512 // { int mq_unlink(const char *name); }
	SYS_MQ_GETATTR             = 513 // { int mq_getattr(mqd_t mqdes, \
	SYS_MQ_SETATTR             = 514 // { int mq_setattr(mqd_t mqdes, \

	SYS_MQ_OPEN                = 510 // { mqd_t mq_open(const char * name, int oflag, mode_t mode, struct mq_attr *attr); }
	SYS_MQ_CLOSE               = 511 // { int mq_close(mqd_t mqdes); }
	SYS_MQ_UNLINK              = 512 // { int mq_unlink(const char *name); }
	SYS_MQ_GETATTR             = 513 // { int mq_getattr(mqd_t mqdes, struct mq_attr *mqstat); }

	IN_UNMOUNT               = 0x00002000
	IN_Q_OVERFLOW            = 0x00004000
	IN_IGNORED               = 0x00008000
	IN_CLOSE                 = (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE)
	IN_MOVE                  = (IN_MOVED_FROM | IN_MOVED_TO)
	IN_ALL_EVENTS            = (IN_ACCESS | IN_MODIFY | IN_ATTRIB |
		IN_CLOSE | IN_OPEN | IN_MOVE |
		IN_CREATE | IN_DELETE | IN_DELETE_SELF |
		IN_MOVE_SELF)
	IN_ONLYDIR                      = 0x01000000

	net         string
	laddr       Addr
	raddr       Addr

	// The only networking available in WASI preview 1 is the ability to
	// sock_accept on a pre-opened socket, and then fd_read, fd_write,
	// fd_close, and sock_shutdown on the resulting connection. We
	// intercept applicable netFD calls on this instance, and then pass
	// the remainder of the netFD calls to fakeNetFD.
	*fakeNetFD
}

}

// A builtinId is the id of a builtin function.
type builtinId int

const (
	// universe scope
	_Append builtinId = iota
	_Cap
	_Clear
	_Close
	_Complex
	_Copy
	_Delete
	_Imag
	_Len
	_Make
	_Max
	_Min
	_New
	_Panic
	_Print
	_Println
	_Real
	_Recover

	// package unsafe
	_Add
	_Alignof

}

// A builtinId is the id of a builtin function.
type builtinId int

const (
	// universe scope
	_Append builtinId = iota
	_Cap
	_Clear
	_Close
	_Complex
	_Copy
	_Delete
	_Imag
	_Len
	_Make
	_Max
	_Min
	_New
	_Panic
	_Print
	_Println
	_Real
	_Recover

	// package unsafe
	_Add
	_Alignof

)

// https://github.com/WebAssembly/WASI/blob/a2b96e81c0586125cc4dc79a5be0b78d9a059925/legacy/preview1/docs.md#-fd_closefd-fd---result-errno
//
//go:wasmimport wasi_snapshot_preview1 fd_close
//go:noescape
func fd_close(fd int32) Errno

// https://github.com/WebAssembly/WASI/blob/a2b96e81c0586125cc4dc79a5be0b78d9a059925/legacy/preview1/docs.md#-fd_filestat_set_sizefd-fd-size-filesize---result-errno
//

func BenchmarkSelectProdCons(b *testing.B) {
	const CallsPerSched = 1000
	procs := runtime.GOMAXPROCS(-1)
	N := int32(b.N / CallsPerSched)
	c := make(chan bool, 2*procs)
	myc := make(chan int, 128)
	myclose := make(chan bool)
	for p := 0; p < procs; p++ {
		go func() {
			// Producer: sends to myc.
			foo := 0
			// Intended to not fire during benchmarking.
			mytimer := time.After(time.Hour)

	IN_CLASSB_NSHIFT                 = 0x10
	IN_CLASSC_HOST                   = 0xff
	IN_CLASSC_NET                    = 0xffffff00
	IN_CLASSC_NSHIFT                 = 0x8
	IN_CLOEXEC                       = 0x80000
	IN_CLOSE                         = 0x18
	IN_CLOSE_NOWRITE                 = 0x10
	IN_CLOSE_WRITE                   = 0x8
	IN_CREATE                        = 0x100
	IN_DELETE                        = 0x200

	IN_CLASSB_NSHIFT                 = 0x10
	IN_CLASSC_HOST                   = 0xff
	IN_CLASSC_NET                    = 0xffffff00
	IN_CLASSC_NSHIFT                 = 0x8
	IN_CLOEXEC                       = 0x80000
	IN_CLOSE                         = 0x18
	IN_CLOSE_NOWRITE                 = 0x10
	IN_CLOSE_WRITE                   = 0x8
	IN_CREATE                        = 0x100
	IN_DELETE                        = 0x200