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runtime: make nanotime use monotonic clock in Solaris

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nanotime() currently uses the REALTIME clock to get the elapsed
time in Solaris. This commit changes it to use the MONOTONIC clock
instead, similar to how it's done in Linux and other OSs. Also changed
nanotime() and walltime() to call clock_gettime() library function
directly from Go code rather than from assembly.

Fixes #33674

Change-Id: Ie4a687b17d2140998ecd97af6ce048c86cf5fc02
Reviewed-on: https://go-review.googlesource.com/c/go/+/199502
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Aram Hăvărneanu <aram@mgk.ro>
This commit is contained in:
Jerrin Shaji George 2019-10-07 12:27:33 -07:00 • committed by Ian Lance Taylor
parent c1ccae4d14
commit 2df5cdbadf
3 changed files with 14 additions and 42 deletions
Download patch file Download diff file Expand all files Collapse all files

15
src/runtime/os3_solaris.go
View file

@ -393,11 +393,16 @@ func munmap(addr unsafe.Pointer, n uintptr) {
sysvicall2(&libc_munmap, uintptr(addr), uintptr(n))
}
func nanotime2()
const (
_CLOCK_REALTIME = 3
_CLOCK_MONOTONIC = 4
)
//go:nosplit
func nanotime1() int64 {
return int64(sysvicall0((*libcFunc)(unsafe.Pointer(funcPC(nanotime2)))))
var ts mts
sysvicall2(&libc_clock_gettime, _CLOCK_MONOTONIC, uintptr(unsafe.Pointer(&ts)))
return ts.tv_sec*1e9 + ts.tv_nsec
}
//go:nosplit
@ -498,6 +503,12 @@ func usleep(µs uint32) {
usleep1(µs)
}
func walltime1() (sec int64, nsec int32) {
var ts mts
sysvicall2(&libc_clock_gettime, _CLOCK_REALTIME, uintptr(unsafe.Pointer(&ts)))
return ts.tv_sec, int32(ts.tv_nsec)
}
//go:nosplit
func write1(fd uintptr, buf unsafe.Pointer, nbyte int32) int32 {
return int32(sysvicall3(&libc_write, uintptr(fd), uintptr(buf), uintptr(nbyte)))