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windows: add accessor for duration since boot

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In order to deal with boot time race conditions, sometimes it is
useful to determine the time since boot.

Change-Id: Ibc907b49a9b072b3ef3b6c94eec7e2e6428943ba
Reviewed-on: https://go-review.googlesource.com/c/sys/+/180899
Run-TryBot: Jason Donenfeld <Jason@zx2c4.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
This commit is contained in:
Jason A. Donenfeld
2019-06-06 16:51:38 +00:00
committed by Matt Layher
parent 79a91cf218
commit 5da285871e
2 changed files with 13 additions and 0 deletions
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windows/zsyscall_windows.go
+7
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@@ -133,6 +133,7 @@ var (
procSetEnvironmentVariableW = modkernel32.NewProc("SetEnvironmentVariableW")
procCreateEnvironmentBlock = moduserenv.NewProc("CreateEnvironmentBlock")
procDestroyEnvironmentBlock = moduserenv.NewProc("DestroyEnvironmentBlock")
procGetTickCount64 = modkernel32.NewProc("GetTickCount64")
procSetFileTime = modkernel32.NewProc("SetFileTime")
procGetFileAttributesW = modkernel32.NewProc("GetFileAttributesW")
procSetFileAttributesW = modkernel32.NewProc("SetFileAttributesW")
@@ -1373,6 +1374,12 @@ func DestroyEnvironmentBlock(block *uint16) (err error) {
return
}
func getTickCount64() (ms uint64) {
r0, _, _ := syscall.Syscall(procGetTickCount64.Addr(), 0, 0, 0, 0)
ms = uint64(r0)
return
}
func SetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetime) (err error) {
r1, _, e1 := syscall.Syscall6(procSetFileTime.Addr(), 4, uintptr(handle), uintptr(unsafe.Pointer(ctime)), uintptr(unsafe.Pointer(atime)), uintptr(unsafe.Pointer(wtime)), 0, 0)
if r1 == 0 {