1 files changed, 61 insertions, 0 deletions
diff --git a/generic/gettime.c b/generic/gettime.c
new file mode 100644
index 0000000..b7c4885
--- /dev/null
+++ b/generic/gettime.c
@@ -0,0 +1,61 @@
+/*
+htop - generic/gettime.c
+(C) 2021 htop dev team
+Released under the GNU GPLv2+, see the COPYING file
+in the source distribution for its full text.
+*/
+#include "config.h"  // IWYU pragma: keep
+
+#include "generic/gettime.h"
+
+#include <string.h>
+#include <time.h>
+
+
+void Generic_gettime_realtime(struct timeval* tvp, uint64_t* msec) {
+
+#if defined(HAVE_CLOCK_GETTIME)
+
+   struct timespec ts;
+   if (clock_gettime(CLOCK_REALTIME, &ts) == 0) {
+      tvp->tv_sec = ts.tv_sec;
+      tvp->tv_usec = ts.tv_nsec / 1000;
+      *msec = ((uint64_t)ts.tv_sec * 1000) + ((uint64_t)ts.tv_nsec / 1000000);
+   } else {
+      memset(tvp, 0, sizeof(struct timeval));
+      *msec = 0;
+   }
+
+#else /* lower resolution gettimeofday(2) is always available */
+
+   struct timeval tv;
+   if (gettimeofday(&tv, NULL) == 0) {
+      *tvp = tv; /* struct copy */
+      *msec = ((uint64_t)tv.tv_sec * 1000) + ((uint64_t)tv.tv_usec / 1000);
+   } else {
+      memset(tvp, 0, sizeof(struct timeval));
+      *msec = 0;
+   }
+
+#endif
+}
+
+void Generic_gettime_monotonic(uint64_t* msec) {
+#if defined(HAVE_CLOCK_GETTIME)
+
+   struct timespec ts;
+   if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
+      *msec = ((uint64_t)ts.tv_sec * 1000) + ((uint64_t)ts.tv_nsec / 1000000);
+   else
+      *msec = 0;
+
+#else /* lower resolution gettimeofday() should be always available */
+
+   struct timeval tv;
+   if (gettimeofday(&tv, NULL) == 0)
+      *msec = ((uint64_t)tv.tv_sec * 1000) + ((uint64_t)tv.tv_usec / 1000);
+   else
+      *msec = 0;
+
+#endif
+}