+/* ftrylockfile(FILE * )\r
+\r
+ This file is part of the Public Domain C Library (PDCLib).\r
+ Permission is granted to use, modify, and / or redistribute at will.\r
+*/\r
+\r
+#include <stdio.h>\r
+#include <stdarg.h>\r
+\r
+#ifndef REGTEST\r
+#include <threads.h>\r
+#include <stdlib.h>\r
+\r
+int ftrylockfile( FILE * file )\r
+{\r
+ int res = mtx_trylock( &file->lock );\r
+ switch(res) {\r
+ case thrd_success:\r
+ return 0;\r
+ case thrd_busy:\r
+ return 1;\r
+\r
+ default:\r
+ abort();\r
+ }\r
+}\r
+\r
+#endif\r
+\r
+#ifdef TEST\r
+#include <_PDCLIB_test.h>\r
+\r
+int main( void )\r
+{\r
+ // Not tested here - tested by other stdio test drivers\r
+ return TEST_RESULTS;\r
+}\r
+\r
+#endif\r