X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Fgettime.h;h=772ff9b50c536ecb01c9b81f744b6420596a3883;hb=391eec9ee78fc9dfdc476ad2a8ed7755009e4a2f;hp=4d5a02e1e253cfff34e0e7f5726f7959b6553055;hpb=ecf08255b0b6b9d15b86f614942ac8f53f41302a;p=minetest.git

diff --git a/src/gettime.h b/src/gettime.h
index 4d5a02e1e..772ff9b50 100644
--- a/src/gettime.h
+++ b/src/gettime.h
@@ -17,12 +17,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
-#ifndef GETTIME_HEADER
-#define GETTIME_HEADER
+#pragma once
 
-#include "irrlichttypes.h"
-#include <time.h>
+#include <ctime>
 #include <string>
+#include <mutex>
 
 enum TimePrecision
 {
@@ -32,15 +31,34 @@ enum TimePrecision
 	PRECISION_NANO
 };
 
-inline std::string getTimestamp()
+inline struct tm mt_localtime()
 {
+	// initialize the time zone on first invocation
+	static std::once_flag tz_init;
+	std::call_once(tz_init, [] {
+#ifdef _WIN32
+		_tzset();
+#else
+		tzset();
+#endif
+		});
+
+	struct tm ret;
 	time_t t = time(NULL);
-	// This is not really thread-safe but it won't break anything
-	// except its own output, so just go with it.
-	struct tm *tm = localtime(&t);
+	// TODO we should check if the function returns NULL, which would mean error
+#ifdef _WIN32
+	localtime_s(&ret, &t);
+#else
+	localtime_r(&t, &ret);
+#endif
+	return ret;
+}
+
+
+inline std::string getTimestamp()
+{
+	const struct tm tm = mt_localtime();
 	char cs[20]; // YYYY-MM-DD HH:MM:SS + '\0'
-	strftime(cs, 20, "%Y-%m-%d %H:%M:%S", tm);
+	strftime(cs, 20, "%Y-%m-%d %H:%M:%S", &tm);
 	return cs;
 }
-
-#endif