blockchain_stats: don't use gmtime_r on Windows

In some cases, it doesn't like it (I don't know the details).

Factor into a new epee function

2 files changed, 11 insertions, 6 deletions

diff --git a/contrib/epee/include/misc_os_dependent.h b/contrib/epee/include/misc_os_dependent.h
index 0d09683d6..5fffde8d5 100644
--- a/contrib/epee/include/misc_os_dependent.h
+++ b/contrib/epee/include/misc_os_dependent.h
@@ -124,5 +124,14 @@ namespace misc_utils
 		return boost::lexical_cast<std::string>(pthread_self());
 #endif
 	}
+
+	inline bool get_gmt_time(time_t t, struct tm &tm)
+	{
+#ifdef _WIN32
+		return gmtime_s(&tm, &t);
+#else
+		return gmtime_r(&t, &tm);
+#endif
+	}
 }
 }
diff --git a/contrib/epee/src/mlog.cpp b/contrib/epee/src/mlog.cpp
index 638155b6b..00d848388 100644
--- a/contrib/epee/src/mlog.cpp
+++ b/contrib/epee/src/mlog.cpp
@@ -40,6 +40,7 @@
 #include <boost/filesystem.hpp>
 #include <boost/algorithm/string.hpp>
 #include "string_tools.h"
+#include "misc_os_dependent.h"
 #include "misc_log_ex.h"
 
 #undef MONERO_DEFAULT_LOG_CATEGORY
@@ -58,12 +59,7 @@ static std::string generate_log_filename(const char *base)
   char tmp[200];
   struct tm tm;
   time_t now = time(NULL);
-  if
-#ifdef WIN32
-  (!gmtime_s(&tm, &now))
-#else
-  (!gmtime_r(&now, &tm))
-#endif
+  if (!epee::misc_utils::get_gmt_time(now, tm))
     snprintf(tmp, sizeof(tmp), "part-%u", ++fallback_counter);
   else
     strftime(tmp, sizeof(tmp), "%Y-%m-%d-%H-%M-%S", &tm);