tests: add some runtime error in nitin.input

[nit.git] / lib / realtime.nit

diff --git a/lib/realtime.nit b/lib/realtime.nit
index 523f63e..a400619 100644 (file)
--- a/lib/realtime.nit
+++ b/lib/realtime.nit
@@ -23,7 +23,7 @@ in "C header" `{
 
 in "C" `{
 
-#ifdef __MACH__
+#if defined(__MACH__) && !defined(CLOCK_REALTIME)
 /* OS X does not have clock_gettime, mascarade it and use clock_get_time
  * cf http://stackoverflow.com/questions/11680461/monotonic-clock-on-osx
 */
@@ -73,14 +73,18 @@ extern class Timespec `{struct timespec*`}
                clock_gettime(CLOCK_MONOTONIC, self);
        `}
 
-       # Substract a Timespec from `self`.
-       fun - ( o : Timespec ) : Timespec
-       do
-               var s = sec - o.sec
-               var ns = nanosec - o.nanosec
-               if ns > nanosec then s += 1
-               return new Timespec( s, ns )
-       end
+       # Subtract `other` from `self`
+       fun -(other: Timespec): Timespec `{
+               time_t s = self->tv_sec - other->tv_sec;
+               long ns = self->tv_nsec - other->tv_nsec;
+               if (ns < 0) {
+                       s -= 1;
+                       ns += 1000000000l;
+               }
+               struct timespec* tv = malloc(sizeof(struct timespec));
+               tv->tv_sec = s; tv->tv_nsec = ns;
+               return tv;
+       `}
 
        # Number of whole seconds of elapsed time.
        fun sec : Int `{
@@ -111,23 +115,43 @@ extern class Timespec `{struct timespec*`}
        # Number of seconds as a `Float`
        #
        # Incurs a loss of precision, but the result is pretty to print.
-       fun to_f: Float do return sec.to_f + nanosec.to_f / 1000000000.0
+       fun to_f: Float `{
+               return (double)self->tv_sec + 0.000000001 * self->tv_nsec;
+       `}
 
        redef fun to_s do return "{to_f}s"
 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__
+#if defined(__MACH__) && !defined(CLOCK_REALTIME)
                clock_serv_t cclock;
                int nsecs;
                mach_msg_type_number_t count;
@@ -142,19 +166,27 @@ class Clock
                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
@@ -167,4 +199,10 @@ class Clock
                dt.free
                return r
        end
+
+       redef fun finalize_once
+       do
+               time_at_beginning.free
+               time_at_last_lapse.free
+       end
 end