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-rw-r--r--generic/gettime.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/generic/gettime.c b/generic/gettime.c
new file mode 100644
index 0000000..af06ef3
--- /dev/null
+++ b/generic/gettime.c
@@ -0,0 +1,57 @@
+/*
+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
+
+# error "No monotonic clock available"
+
+#endif
+}

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