SYS_FUTIMENS                 = 546 // { int futimens(int fd, struct timespec *times); }
	SYS_UTIMENSAT                = 547 // { int utimensat(int fd, char *path, struct timespec *times, int flag); }
	SYS_FDATASYNC                = 550 // { int fdatasync(int fd); }
	SYS_FSTAT                    = 551 // { int fstat(int fd, struct stat *sb); }

	SYS_FUTIMENS                 = 546 // { int futimens(int fd, struct timespec *times); }
	SYS_UTIMENSAT                = 547 // { int utimensat(int fd, char *path, struct timespec *times, int flag); }
	SYS_NUMA_GETAFFINITY         = 548 // { int numa_getaffinity(cpuwhich_t which, id_t id, struct vm_domain_policy_entry *policy); }

	err = pipe(&pp)
	p[0] = int(pp[0])
	p[1] = int(pp[1])
	return
}

//sys	utimes(path string, timeval *[2]Timeval) (err error) = SYS___UTIMES_A

func Utimes(path string, tv []Timeval) (err error) {
	if tv == nil {
		return utimes(path, nil)
	}
	if len(tv) != 2 {
		return EINVAL
	}
	return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
}

All source code in Gradle is written to target one or more of these runtimes.
Most source code targets the daemon and the remaining code either targets a single runtime, for example the Gradle client, or is shared across multiple runtimes.

## Composition by architecture modules

Each [architecture module and platform](platforms.md) can contribute code to any of the runtimes.
Not every module contributes to every runtime.

	runtime.ExitSyscall()
	if int64(r0) == -1 {
		err = errnoErr2(e1, e2)
	}
	return
}

//go:nosplit
func get_FutimesAddr() *(func(fd int, tv []Timeval) (err error))

var Futimes = enter_Futimes

func enter_Futimes(fd int, tv []Timeval) (err error) {
	funcref := get_FutimesAddr()
	if funcptrtest(GetZosLibVec()+SYS_FUTIMES<<4, "") == 0 {
		*funcref = impl_Futimes
	} else {

	}
	if n != unsafe.Sizeof(tv) {
		return nil, EIO
	}
	return &tv, nil
}

//sys	utimes(path string, timeval *[2]Timeval) (err error)

func Utimes(path string, tv []Timeval) error {
	if tv == nil {
		return utimes(path, nil)
	}
	if len(tv) != 2 {
		return EINVAL
	}
	return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
}

func UtimesNano(path string, ts []Timespec) error {

// If there is an error, it will be of type [*PathError].
func Chtimes(name string, atime time.Time, mtime time.Time) error {
	var utimes [2]syscall.Timespec
	set := func(i int, t time.Time) {
		if t.IsZero() {
			utimes[i] = syscall.Timespec{Sec: _UTIME_OMIT, Nsec: _UTIME_OMIT}
		} else {
			utimes[i] = syscall.NsecToTimespec(t.UnixNano())
		}
	}
	set(0, atime)
	set(1, mtime)

		NsecToTimeval(TimespecToNsec(ts[0])),
		NsecToTimeval(TimespecToNsec(ts[1])),
	}
	return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
}

//sys	futimes(fd int, timeval *[2]Timeval) (err error)

func Futimes(fd int, tv []Timeval) (err error) {
	if len(tv) != 2 {
		return EINVAL
	}
	return futimes(fd, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
}

//sys	fcntl(fd int, cmd int, arg int) (val int, err error)

	}
	return nil
}

// Chtimes changes the access and modification times of the named
// file, similar to the Unix utime() or utimes() functions.
// A zero time.Time value will leave the corresponding file time unchanged.
//
// The underlying filesystem may truncate or round the values to a
// less precise time unit.
// If there is an error, it will be of type *PathError.

While a lot of Gradle source code runs only in the Gradle daemon, not all of it does and so, when working on some source code it is important to be aware of the runtimes in which it will run.

See [Gradle runtimes](runtimes.md) for a list of these runtimes and more details.

## Build state model

As Gradle executes, it acts on various pieces of the build definition, such as each project in the build.