unix: add SysctlClockinfo on darwin
Add type Clockinfo and the SysctlClockinfo function to query clock rate
information from the kernel.
Change-Id: Ic29edcacee3b3f6125bb218b82c2a2496c39213a
Reviewed-on: https://go-review.googlesource.com/c/sys/+/170297
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/unix/syscall_darwin.go b/unix/syscall_darwin.go
index a2e3688..2120091 100644
--- a/unix/syscall_darwin.go
+++ b/unix/syscall_darwin.go
@@ -144,6 +144,23 @@
//sys getattrlist(path *byte, list unsafe.Pointer, buf unsafe.Pointer, size uintptr, options int) (err error)
+func SysctlClockinfo(name string) (*Clockinfo, error) {
+ mib, err := sysctlmib(name)
+ if err != nil {
+ return nil, err
+ }
+
+ n := uintptr(SizeofClockinfo)
+ var ci Clockinfo
+ if err := sysctl(mib, (*byte)(unsafe.Pointer(&ci)), &n, nil, 0); err != nil {
+ return nil, err
+ }
+ if n != SizeofClockinfo {
+ return nil, EIO
+ }
+ return &ci, nil
+}
+
//sysnb pipe() (r int, w int, err error)
func Pipe(p []int) (err error) {
diff --git a/unix/syscall_darwin_test.go b/unix/syscall_darwin_test.go
index 7faa295..a8a5d4e 100644
--- a/unix/syscall_darwin_test.go
+++ b/unix/syscall_darwin_test.go
@@ -61,3 +61,12 @@
t.Errorf("UtimesNanoAt: wrong mtime: got %v, expected %v", st.Mtimespec, expected)
}
}
+
+func TestSysctlClockinfo(t *testing.T) {
+ ci, err := unix.SysctlClockinfo("kern.clockrate")
+ if err != nil {
+ t.Fatal(err)
+ }
+ t.Logf("tick = %v, tickadj = %v, hz = %v, profhz = %v, stathz = %v",
+ ci.Tick, ci.Tickadj, ci.Hz, ci.Profhz, ci.Stathz)
+}
diff --git a/unix/types_darwin.go b/unix/types_darwin.go
index 9fd2aaa..155c2e6 100644
--- a/unix/types_darwin.go
+++ b/unix/types_darwin.go
@@ -275,3 +275,9 @@
// uname
type Utsname C.struct_utsname
+
+// Clockinfo
+
+const SizeofClockinfo = C.sizeof_struct_clockinfo
+
+type Clockinfo C.struct_clockinfo
diff --git a/unix/zsyscall_darwin_amd64.1_11.go b/unix/zsyscall_darwin_amd64.1_11.go
index 2581e89..8c88d58 100644
--- a/unix/zsyscall_darwin_amd64.1_11.go
+++ b/unix/zsyscall_darwin_amd64.1_11.go
@@ -683,6 +683,16 @@
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+func ClockGettime(clockid int32, time *Timespec) (err error) {
+ _, _, e1 := Syscall(SYS_CLOCK_GETTIME, uintptr(clockid), uintptr(unsafe.Pointer(time)), 0)
+ if e1 != 0 {
+ err = errnoErr(e1)
+ }
+ return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
func Close(fd int) (err error) {
_, _, e1 := Syscall(SYS_CLOSE, uintptr(fd), 0, 0)
if e1 != 0 {
diff --git a/unix/ztypes_darwin_386.go b/unix/ztypes_darwin_386.go
index 2aeb52a..cefe2f8 100644
--- a/unix/ztypes_darwin_386.go
+++ b/unix/ztypes_darwin_386.go
@@ -487,3 +487,13 @@
Version [256]byte
Machine [256]byte
}
+
+const SizeofClockinfo = 0x14
+
+type Clockinfo struct {
+ Hz int32
+ Tick int32
+ Tickadj int32
+ Stathz int32
+ Profhz int32
+}
diff --git a/unix/ztypes_darwin_amd64.go b/unix/ztypes_darwin_amd64.go
index 0d0d9f2..c6bb883 100644
--- a/unix/ztypes_darwin_amd64.go
+++ b/unix/ztypes_darwin_amd64.go
@@ -497,3 +497,13 @@
Version [256]byte
Machine [256]byte
}
+
+const SizeofClockinfo = 0x14
+
+type Clockinfo struct {
+ Hz int32
+ Tick int32
+ Tickadj int32
+ Stathz int32
+ Profhz int32
+}
diff --git a/unix/ztypes_darwin_arm.go b/unix/ztypes_darwin_arm.go
index 04e344b..94c23bc 100644
--- a/unix/ztypes_darwin_arm.go
+++ b/unix/ztypes_darwin_arm.go
@@ -488,3 +488,13 @@
Version [256]byte
Machine [256]byte
}
+
+const SizeofClockinfo = 0x14
+
+type Clockinfo struct {
+ Hz int32
+ Tick int32
+ Tickadj int32
+ Stathz int32
+ Profhz int32
+}
diff --git a/unix/ztypes_darwin_arm64.go b/unix/ztypes_darwin_arm64.go
index 9fec185..c82a930 100644
--- a/unix/ztypes_darwin_arm64.go
+++ b/unix/ztypes_darwin_arm64.go
@@ -497,3 +497,13 @@
Version [256]byte
Machine [256]byte
}
+
+const SizeofClockinfo = 0x14
+
+type Clockinfo struct {
+ Hz int32
+ Tick int32
+ Tickadj int32
+ Stathz int32
+ Profhz int32
+}
