time: implement timezones for windows

Fixes issue 761.

R=PeterGo, adg, rsc
CC=golang-dev
http://codereview.appspot.com/1121042

Committer: Russ Cox <rsc@golang.org>

1 files changed, 7 insertions, 9 deletions

diff --git a/src/pkg/syscall/syscall_windows.go b/src/pkg/syscall/syscall_windows.go
index 2f0552b6a..8b6789221 100644
--- a/src/pkg/syscall/syscall_windows.go
+++ b/src/pkg/syscall/syscall_windows.go
@@ -127,20 +127,13 @@ func getSysProcAddr(m uint32, pname string) uintptr {
 //sys	GetComputerName(buf *uint16, n *uint32) (ok bool, errno int) = GetComputerNameW
 //sys	SetEndOfFile(handle int32) (ok bool, errno int)
 //sys	GetSystemTimeAsFileTime(time *Filetime)
-//sys   sleep(msec uint32) = Sleep
+//sys	sleep(msec uint32) = Sleep
+//sys	GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, errno int) [failretval=0xffffffff]
 //sys	CreateIoCompletionPort(filehandle int32, cphandle int32, key uint32, threadcnt uint32) (handle int32, errno int)
 //sys	GetQueuedCompletionStatus(cphandle int32, qty *uint32, key *uint32, overlapped **Overlapped, timeout uint32) (ok bool, errno int)
 
 // syscall interface implementation for other packages
 
-func Sleep(nsec int64) (errno int) {
-	nsec += 999999 // round up to milliseconds
-	msec := uint32(nsec / 1e6)
-	sleep(msec)
-	errno = 0
-	return
-}
-
 func Errstr(errno int) string {
 	if errno == EWINDOWS {
 		return "not supported by windows"
@@ -379,6 +372,11 @@ func Gettimeofday(tv *Timeval) (errno int) {
 	return 0
 }
 
+func Sleep(nsec int64) (errno int) {
+	sleep(uint32((nsec + 1e6 - 1) / 1e6)) // round up to milliseconds
+	return 0
+}
+
 // TODO(brainman): implement Utimes, or rewrite os.file.Chtimes() instead
 func Utimes(path string, tv []Timeval) (errno int) {
 	return EWINDOWS