added localtime_r and a stub (which needs mutexes, which we still have to port!)

1 files changed, 31 insertions, 0 deletions

diff --git a/src/port/time.c b/src/port/time.c
new file mode 100644
index 0000000..15ccba3
--- /dev/null
+++ b/src/port/time.c
@@ -0,0 +1,31 @@
+#include "port/time.h"
+
+#if !defined HAVE_LOCALTIME_R
+
+/* TODO: port mutexes */
+#include <pthread.h>		/* for pthread_X */
+
+#include "port/stdbool.h"	/* for bool */
+#include "port/string.h"	/* for memcpy */
+
+struct tm *localtime_r( const time_t *timep, struct tm *result ) {
+	static pthread_mutex_t mutex;
+	static bool first = true;
+	struct tm *local_result;
+
+	if( first ) {
+		pthread_mutex_init( &mutex, NULL );
+		first = false;
+	}
+
+	pthread_mutex_lock( &mutex );
+	local_result = localtime( timep );
+	if( local_result != NULL ) {
+		memcpy( result, local_result, sizeof( struct tm ) );
+	}
+	pthread_mutex_unlock( &mutex );
+
+	return ( local_result != NULL ) ? result : NULL;
+}
+
+#endif /* !defined HAVE_LOCALTIME_R */