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Unified Diff: runtime/vm/os_win.cc

Issue 9969098: Set the TZ env to get the UTC-ms since epoch. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Address comment. Created 8 years, 8 months ago
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Index: runtime/vm/os_win.cc
diff --git a/runtime/vm/os_win.cc b/runtime/vm/os_win.cc
index 71020dec96b14829abc72b2f2b793f6df771cbdd..ec93c8211d274e1fbc81b944e76deaa5fe8a3af4 100644
--- a/runtime/vm/os_win.cc
+++ b/runtime/vm/os_win.cc
@@ -10,63 +10,46 @@
namespace dart {
-bool OS::BreakDownSecondsSinceEpoch(time_t seconds_since_epoch,
- bool in_utc,
- BrokenDownDate* result) {
- struct tm tm_result;
- errno_t error_code;
- if (in_utc) {
- error_code = gmtime_s(&tm_result, &seconds_since_epoch);
- } else {
- // TODO(floitsch): we should be able to call tzset only once during
- // initialization.
- tzset(); // Make sure the libc knows about the local zone.
- error_code = localtime_s(&tm_result, &seconds_since_epoch);
- }
- result->year = tm_result.tm_year;
- result->month= tm_result.tm_mon;
- result->day = tm_result.tm_mday;
- result->hours = tm_result.tm_hour;
- result->minutes = tm_result.tm_min;
- result->seconds = tm_result.tm_sec;
+bool OS::GmTime(int64_t seconds_since_epoch, tm* tm_result) {
+ time_t seconds = static_cast<time_t>(seconds_since_epoch);
+ if (seconds != seconds_since_epoch) return false;
+ errno_t error_code = gmtime_s(tm_result, &seconds);
+ return error_code == 0;
+}
+
+
+bool OS::LocalTime(int64_t seconds_since_epoch, tm* tm_result) {
+ time_t seconds = static_cast<time_t>(seconds_since_epoch);
+ if (seconds != seconds_since_epoch) return false;
+ errno_t error_code = localtime_s(tm_result, &seconds);
return error_code == 0;
}
-bool OS::BrokenDownToSecondsSinceEpoch(
- const BrokenDownDate& broken_down, bool in_utc, time_t* result) {
- struct tm tm_broken_down;
- // mktime takes the years since 1900.
- tm_broken_down.tm_year = broken_down.year;
- tm_broken_down.tm_mon = broken_down.month;
- tm_broken_down.tm_mday = broken_down.day;
- tm_broken_down.tm_hour = broken_down.hours;
- tm_broken_down.tm_min = broken_down.minutes;
- tm_broken_down.tm_sec = broken_down.seconds;
+bool OS::MkGmTime(tm* tm, int64_t* seconds_result) {
+ // Disable daylight saving.
+ tm->tm_isdst = 0;
// Set wday to an impossible day, so that we can catch bad input.
- tm_broken_down.tm_wday = -1;
- // Make sure the libc knows about the local zone.
- // In case of 'in_utc' this call is mainly for multi-threading issues. If
- // another thread uses a time-function it will set the timezone. The timezone
- // adjustement below would then not work anymore.
- // TODO(floitsch): we should be able to call tzset only once during
- // initialization.
- tzset();
- if (in_utc) {
- // Disable daylight saving in utc mode.
- tm_broken_down.tm_isdst = 0;
- // mktime assumes that the given date is local time zone.
- *result = mktime(&tm_broken_down);
- // Remove the timezone.
- *result -= timezone;
- } else {
- // Let libc figure out if daylight saving is active.
- tm_broken_down.tm_isdst = -1;
- *result = mktime(&tm_broken_down);
+ tm->tm_wday = -1;
+ time_t seconds = _mkgmtime(tm);
+ if ((seconds == -1) && (tm->tm_wday == -1)) {
+ return false;
}
- if ((*result == -1) && (tm_broken_down.tm_wday == -1)) {
+ *seconds_result = seconds;
+ return true;
+}
+
+
+bool OS::MkTime(tm* tm, int64_t* seconds_result) {
+ // Let the libc figure out if daylight saving is active.
+ tm->tm_isdst = -1;
+ // Set wday to an impossible day, so that we can catch bad input.
+ tm->tm_wday = -1;
+ time_t seconds = mktime(tm);
+ if ((seconds == -1) && (tm->tm_wday == -1)) {
return false;
}
+ *seconds_result = seconds;
return true;
}
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