Export wctime() and cputime() from rtspin to library clients

The timing functions are quite handy when building benchmark tasks.
Avoid copy&paste reuse by making them available via the library.

3 files changed, 29 insertions, 16 deletions

diff --git a/bin/rtspin.c b/bin/rtspin.c
index 2de60f5..ae76941 100644
--- a/bin/rtspin.c
+++ b/bin/rtspin.c
@@ -11,22 +11,6 @@
 #include "common.h"
 
 
-static double cputime()
-{
-        struct timespec ts;
-        int err;
-        err = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts);
-        if (err != 0)
-                perror("clock_gettime");
-        return (ts.tv_sec + 1E-9 * ts.tv_nsec);
-}
-
-static double wctime()
-{
-        struct timeval tv;
-        gettimeofday(&tv, NULL);
-        return (tv.tv_sec + 1E-6 * tv.tv_usec);
-}
 
 static void usage(char *error) {
         fprintf(stderr, "Error: %s\n", error);
diff --git a/include/litmus.h b/include/litmus.h
index 2a26a4a..3b762db 100644
--- a/include/litmus.h
+++ b/include/litmus.h
@@ -111,6 +111,12 @@ static inline lt_t ms2lt(unsigned long milliseconds)
         return __NS_PER_MS * milliseconds;
 }
 
+/* CPU time consumed so far in seconds */
+double cputime(void);
+
+/* wall-clock time in seconds */
+double wctime(void);
+
 /* semaphore allocation */
 
 static inline int open_fmlp_sem(int fd, int name)
diff --git a/src/clocks.c b/src/clocks.c
new file mode 100644
index 0000000..fcb94e5
--- /dev/null
+++ b/src/clocks.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+#include <sys/time.h>
+#include <time.h>
+
+/* CPU time consumed so far in seconds */
+double cputime(void)
+{
+        struct timespec ts;
+        int err;
+        err = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts);
+        if (err != 0)
+                perror("clock_gettime");
+        return (ts.tv_sec + 1E-9 * ts.tv_nsec);
+}
+
+/* wall-clock time in seconds */
+double wctime(void)
+{
+        struct timeval tv;
+        gettimeofday(&tv, NULL);
+        return (tv.tv_sec + 1E-6 * tv.tv_usec);
+}