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unix: support Readv, Preadv, Writev and Pwritev for darwin

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Darwin, starting with Big Sur, supports vectorized IO.

Fixes golang/go#64710

Change-Id: Ic3a3c51009eab24f70665d8d3a145b328a7713c6
Reviewed-on: https://go-review.googlesource.com/c/sys/+/548795
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
This commit is contained in:
Manuel Schönlaub
2025-03-20 08:06:05 -07:00
committed by Gopher Robot
parent 7401cce313
commit 3330b5e756
7 changed files with 363 additions and 1 deletions
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unix/zsyscall_darwin_arm64.go
+84
View File
@@ -2512,6 +2512,90 @@ var libc_munmap_trampoline_addr uintptr
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func readv(fd int, iovecs []Iovec) (n int, err error) {
var _p0 unsafe.Pointer
if len(iovecs) > 0 {
_p0 = unsafe.Pointer(&iovecs[0])
} else {
_p0 = unsafe.Pointer(&_zero)
}
r0, _, e1 := syscall_syscall(libc_readv_trampoline_addr, uintptr(fd), uintptr(_p0), uintptr(len(iovecs)))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_readv_trampoline_addr uintptr
//go:cgo_import_dynamic libc_readv readv "/usr/lib/libSystem.B.dylib"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func preadv(fd int, iovecs []Iovec, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(iovecs) > 0 {
_p0 = unsafe.Pointer(&iovecs[0])
} else {
_p0 = unsafe.Pointer(&_zero)
}
r0, _, e1 := syscall_syscall6(libc_preadv_trampoline_addr, uintptr(fd), uintptr(_p0), uintptr(len(iovecs)), uintptr(offset), 0, 0)
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_preadv_trampoline_addr uintptr
//go:cgo_import_dynamic libc_preadv preadv "/usr/lib/libSystem.B.dylib"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func writev(fd int, iovecs []Iovec) (n int, err error) {
var _p0 unsafe.Pointer
if len(iovecs) > 0 {
_p0 = unsafe.Pointer(&iovecs[0])
} else {
_p0 = unsafe.Pointer(&_zero)
}
r0, _, e1 := syscall_syscall(libc_writev_trampoline_addr, uintptr(fd), uintptr(_p0), uintptr(len(iovecs)))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_writev_trampoline_addr uintptr
//go:cgo_import_dynamic libc_writev writev "/usr/lib/libSystem.B.dylib"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func pwritev(fd int, iovecs []Iovec, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(iovecs) > 0 {
_p0 = unsafe.Pointer(&iovecs[0])
} else {
_p0 = unsafe.Pointer(&_zero)
}
r0, _, e1 := syscall_syscall6(libc_pwritev_trampoline_addr, uintptr(fd), uintptr(_p0), uintptr(len(iovecs)), uintptr(offset), 0, 0)
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_pwritev_trampoline_addr uintptr
//go:cgo_import_dynamic libc_pwritev pwritev "/usr/lib/libSystem.B.dylib"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Fstat(fd int, stat *Stat_t) (err error) {
_, _, e1 := syscall_syscall(libc_fstat_trampoline_addr, uintptr(fd), uintptr(unsafe.Pointer(stat)), 0)
if e1 != 0 {