clock_gettime(CLOCK_MONOTONIC, self);
`}
- # Substract a Timespec from `self`.
- fun - ( o : Timespec ) : Timespec
+ # Subtract `other` from `self`
+ fun -(other: Timespec): Timespec
do
- var s = sec - o.sec
- var ns = nanosec - o.nanosec
- if ns > nanosec then s += 1
- return new Timespec( s, ns )
+ var s = sec - other.sec
+ var ns = nanosec - other.nanosec
+ if ns < 0 then
+ s -= 1
+ ns += 1000000000
+ end
+ return new Timespec(s, ns)
end
# Number of whole seconds of elapsed time.
end
# Keeps track of real time
+#
+# ~~~
+# var clock = new Clock
+#
+# # sleeping at least 1s
+# 1.0.sleep
+# assert clock.total >= 1.0
+# assert clock.lapse >= 1.0
+#
+# # sleeping at least 5ms
+# 0.005.sleep
+# assert clock.total >= 1.005
+# assert clock.lapse >= 0.005
+# ~~~
class Clock
- # Time at instanciation
+ super FinalizableOnce
+
+ # TODO use less mallocs
+
+ # Time at creation
protected var time_at_beginning = new Timespec.monotonic_now
# Time at last time a lapse method was called
protected var time_at_last_lapse = new Timespec.monotonic_now
# Smallest time frame reported by clock
- fun resolution : Timespec `{
+ fun resolution: Timespec `{
struct timespec* tv = malloc( sizeof(struct timespec) );
#ifdef __MACH__
clock_serv_t cclock;
return tv;
`}
- # Return timelapse since instanciation of this instance
- fun total : Timespec
+ # Seconds since the creation of this instance
+ fun total: Float
do
- return new Timespec.monotonic_now - time_at_beginning
+ var now = new Timespec.monotonic_now
+ var diff = now - time_at_beginning
+ var r = diff.to_f
+ diff.free
+ now.free
+ return r
end
- # Return timelapse since last call to lapse
- fun lapse : Timespec
+ # Seconds since the last call to `lapse`
+ fun lapse: Float
do
var nt = new Timespec.monotonic_now
var dt = nt - time_at_last_lapse
+ var r = dt.to_f
+ dt.free
+ time_at_last_lapse.free
time_at_last_lapse = nt
- return dt
+ return r
+ end
+
+ # Seconds since the last call to `lapse`, without resetting the lapse counter
+ fun peek_lapse: Float
+ do
+ var nt = new Timespec.monotonic_now
+ var dt = nt - time_at_last_lapse
+ var r = dt.to_f
+ nt.free
+ dt.free
+ return r
+ end
+
+ redef fun finalize_once
+ do
+ time_at_beginning.free
+ time_at_last_lapse.free
end
end