windows: use cpu-intensive task instead of real time in test

Windows profiling breaks when using real time instead of cpu, but we need the
extension function to show up, so make it do something instead of waiting.
I've also duplicated the test cases so that explicit real and CPU times are
tested (on platforms other than Windows)

Differential Revision: https://phab.mercurial-scm.org/D11003

tests/test-profile.t

@@ -73,7 +73,9 b' Install an extension that can sleep and '
   > command = registrar.command(cmdtable)
   > @command(b'sleep', [], b'hg sleep')
   > def sleep_for_at_least_one_stat_cycle(ui, *args, **kwargs):
-  >     time.sleep(0.1)
+  >     t = time.time()  # don't use time.sleep because we need CPU time
+  >     while time.time() - t < 0.5:
+  >         pass
   > EOF
 
   $ cat >> $HGRCPATH << EOF
@@ -100,10 +102,19 b' Various statprof formatters work'
     %   cumulative      self          
   $ cat ../out | statprofran
 
-  $ hg --profile --config profiling.statformat=hotpath sleep 2>../out || cat ../out
+Windows real time tracking is broken, only use CPU
+
+#if no-windows
+  $ hg --profile --config profiling.time-track=real --config profiling.statformat=hotpath sleep 2>../out || cat ../out
   $ cat ../out | statprofran
-  $ grep sleepext_with_a_long_filename.py ../out
-  .* [0-9.]+%  [0-9.]+s  sleepext_with_a_long_filename.py:\s*sleep_for_at_least_one_stat_cycle, line 7:    time\.sleep.* (re)
+  $ grep sleepext_with_a_long_filename.py ../out | head -n 1
+  .* [0-9.]+%  [0-9.]+s  sleepext_with_a_long_filename.py:\s*sleep_for_at_least_one_stat_cycle, line \d+:\s+(while|pass).* (re)
+#endif
+
+  $ hg --profile --config profiling.time-track=cpu --config profiling.statformat=hotpath sleep 2>../out || cat ../out
+  $ cat ../out | statprofran
+  $ grep sleepext_with_a_long_filename.py ../out | head -n 1
+  .* [0-9.]+%  [0-9.]+s  sleepext_with_a_long_filename.py:\s*sleep_for_at_least_one_stat_cycle, line \d+:\s+(while|pass).* (re)
 
   $ hg --profile --config profiling.statformat=json sleep 2>../out || cat ../out
   $ cat ../out