Merge: lib/core: Added `is_dir` function to `Path`

[nit.git] / lib / realtime.nit

diff --git a/lib/realtime.nit b/lib/realtime.nit
index 39c5a27..243b5d8 100644 (file)
--- a/lib/realtime.nit
+++ b/lib/realtime.nit
@@ -120,15 +120,33 @@ extern class Timespec `{struct timespec*`}
 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;
@@ -145,19 +163,27 @@ 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
@@ -170,4 +196,10 @@ class Clock
                dt.free
                return r
        end
+
+       redef fun finalize_once
+       do
+               time_at_beginning.free
+               time_at_last_lapse.free
+       end
 end