[PATCH] Split up fio.c into log/stat/time parts
diff --git a/fio-time.c b/fio-time.c
new file mode 100644
index 0000000..5246263
--- /dev/null
+++ b/fio-time.c
@@ -0,0 +1,122 @@
+#include <time.h>
+#include <sys/time.h>
+
+#include "fio.h"
+
+unsigned long utime_since(struct timeval *s, struct timeval *e)
+{
+ double sec, usec;
+
+ sec = e->tv_sec - s->tv_sec;
+ usec = e->tv_usec - s->tv_usec;
+ if (sec > 0 && usec < 0) {
+ sec--;
+ usec += 1000000;
+ }
+
+ sec *= (double) 1000000;
+
+ return sec + usec;
+}
+
+static unsigned long utime_since_now(struct timeval *s)
+{
+ struct timeval t;
+
+ gettimeofday(&t, NULL);
+ return utime_since(s, &t);
+}
+
+unsigned long mtime_since(struct timeval *s, struct timeval *e)
+{
+ double sec, usec;
+
+ sec = e->tv_sec - s->tv_sec;
+ usec = e->tv_usec - s->tv_usec;
+ if (sec > 0 && usec < 0) {
+ sec--;
+ usec += 1000000;
+ }
+
+ sec *= (double) 1000;
+ usec /= (double) 1000;
+
+ return sec + usec;
+}
+
+unsigned long mtime_since_now(struct timeval *s)
+{
+ struct timeval t;
+
+ gettimeofday(&t, NULL);
+ return mtime_since(s, &t);
+}
+
+unsigned long time_since_now(struct timeval *s)
+{
+ return mtime_since_now(s) / 1000;
+}
+
+/*
+ * busy looping version for the last few usec
+ */
+static void __usec_sleep(unsigned int usec)
+{
+ struct timeval start;
+
+ gettimeofday(&start, NULL);
+ while (utime_since_now(&start) < usec)
+ nop;
+}
+
+void usec_sleep(struct thread_data *td, unsigned long usec)
+{
+ struct timespec req, rem;
+
+ req.tv_sec = usec / 1000000;
+ req.tv_nsec = usec * 1000 - req.tv_sec * 1000000;
+
+ do {
+ if (usec < 5000) {
+ __usec_sleep(usec);
+ break;
+ }
+
+ rem.tv_sec = rem.tv_nsec = 0;
+ if (nanosleep(&req, &rem) < 0)
+ break;
+
+ if ((rem.tv_sec + rem.tv_nsec) == 0)
+ break;
+
+ req.tv_nsec = rem.tv_nsec;
+ req.tv_sec = rem.tv_sec;
+
+ usec = rem.tv_sec * 1000000 + rem.tv_nsec / 1000;
+ } while (!td->terminate);
+}
+
+void rate_throttle(struct thread_data *td, unsigned long time_spent,
+ unsigned int bytes)
+{
+ unsigned long usec_cycle;
+
+ if (!td->rate)
+ return;
+
+ usec_cycle = td->rate_usec_cycle * (bytes / td->min_bs);
+
+ if (time_spent < usec_cycle) {
+ unsigned long s = usec_cycle - time_spent;
+
+ td->rate_pending_usleep += s;
+ if (td->rate_pending_usleep >= 100000) {
+ usec_sleep(td, td->rate_pending_usleep);
+ td->rate_pending_usleep = 0;
+ }
+ } else {
+ long overtime = time_spent - usec_cycle;
+
+ td->rate_pending_usleep -= overtime;
+ }
+}