1 files changed, 31 insertions, 0 deletions
diff --git a/deps/v8/src/base/platform/platform-posix-time.cc b/deps/v8/src/base/platform/platform-posix-time.cc
new file mode 100644
index 0000000000..a960f7237e
--- /dev/null
+++ b/deps/v8/src/base/platform/platform-posix-time.cc
@@ -0,0 +1,31 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <cmath>
+
+#include "src/base/platform/platform-posix-time.h"
+
+namespace v8 {
+namespace base {
+
+const char* PosixDefaultTimezoneCache::LocalTimezone(double time) {
+  if (std::isnan(time)) return "";
+  time_t tv = static_cast<time_t>(std::floor(time / msPerSecond));
+  struct tm tm;
+  struct tm* t = localtime_r(&tv, &tm);
+  if (!t || !t->tm_zone) return "";
+  return t->tm_zone;
+}
+
+double PosixDefaultTimezoneCache::LocalTimeOffset() {
+  time_t tv = time(NULL);
+  struct tm tm;
+  struct tm* t = localtime_r(&tv, &tm);
+  // tm_gmtoff includes any daylight savings offset, so subtract it.
+  return static_cast<double>(t->tm_gmtoff * msPerSecond -
+                             (t->tm_isdst > 0 ? 3600 * msPerSecond : 0));
+}
+
+}  // namespace base
+}  // namespace v8