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[pintos-anon] / src / devices / timer.h

diff --git a/src/devices/timer.h b/src/devices/timer.h
index 4be2f48dc8cb006be6a691dd1bb4a92996d2b005..cd3d6bbfeb8d94046224d2676326705247f4a710 100644 (file)
--- a/src/devices/timer.h
+++ b/src/devices/timer.h
@@ -1,14 +1,29 @@
-#ifndef HEADER_TIMER_H
-#define HEADER_TIMER_H 1
+#ifndef DEVICES_TIMER_H
+#define DEVICES_TIMER_H
 
+#include <round.h>
 #include <stdint.h>
 
+/* Number of timer interrupts per second. */
 #define TIMER_FREQ 100
 
 void timer_init (void);
-uint64_t timer_ticks (void);
-uint64_t timer_elapsed (uint64_t);
+void timer_calibrate (void);
 
-void timer_wait_until (uint64_t);
+int64_t timer_ticks (void);
+int64_t timer_elapsed (int64_t);
 
-#endif /* timer.h */
+/* Sleep and yield the CPU to other threads. */
+void timer_sleep (int64_t ticks);
+void timer_msleep (int64_t milliseconds);
+void timer_usleep (int64_t microseconds);
+void timer_nsleep (int64_t nanoseconds);
+
+/* Busy waits. */
+void timer_mdelay (int64_t milliseconds);
+void timer_udelay (int64_t microseconds);
+void timer_ndelay (int64_t nanoseconds);
+
+void timer_print_stats (void);
+
+#endif /* devices/timer.h */