-#define _trace() fprintf(stderr, "_trace()@%s:%u[%s]\n", __FILE__, __LINE__, __FUNCTION__)
+#include <sys/time.h>
+#include <time.h>
+
+#define _forever \
+ for (;;)
+
+#define _trace() do { \
+ struct timeval _tv; \
+ gettimeofday(&_tv, NULL); \
+ fprintf(stderr, "%lu.%.6u:_trace()@%s:%u[%s]\n", _tv.tv_sec, _tv.tv_usec, __FILE__, __LINE__, __FUNCTION__); \
+} while (false)