+
+
+// Replace unprintable characters with a dot in char buffer
+void clean_ascii(unsigned char *buf, size_t len) {
+ for (size_t i = 0; i < len; i++) {
+ if (!isprint(buf[i]))
+ buf[i] = '.';
+ }
+}
+
+
+// Timer functions
+#if !defined (_WIN32)
+#include <errno.h>
+
+static void nsleep(uint64_t n) {
+ struct timespec timeout;
+ timeout.tv_sec = n/1000000000;
+ timeout.tv_nsec = n%1000000000;
+ while (nanosleep(&timeout, &timeout) && errno == EINTR);
+}
+
+void msleep(uint32_t n) {
+ nsleep(1000000 * n);
+}
+
+#endif // _WIN32
+
+// a milliseconds timer for performance measurement
+uint64_t msclock() {
+#if defined(_WIN32)
+#include <sys/types.h>
+ struct _timeb t;
+ if (_ftime_s(&t)) {
+ return 0;
+ } else {
+ return 1000 * t.time + t.millitm;
+ }
+#else
+ struct timespec t;
+ clock_gettime(CLOCK_MONOTONIC, &t);
+ return (t.tv_sec * 1000 + t.tv_nsec / 1000000);
+#endif
+}