patches to Ricardo Lopes' low level profiler: enable if SIGPROF is

there, do sorting, init PROFPREDS when you start counters, keep time
stamps for eventual assert/retract, and use qsort (3) to do less work.


git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@829 b08c6af1-5177-4d33-ba66-4b1c6b8b522a

C/sysbits.c

@@ -1323,10 +1323,6 @@ MSCHandleSignal(DWORD dwCtrlType) {
 static void
 InitSignals (void)
 {
-#ifdef LOW_PROF
-  return;
-#endif
-
 #if !defined(LIGHT) && !_MSC_VER && !defined(__MINGW32__) && !defined(LIGHT) 
   my_signal (SIGQUIT, ReceiveSignal);
   my_signal (SIGKILL, ReceiveSignal);
@@ -2005,11 +2001,7 @@ p_alarm(void)
     Int left;
     Term tout;
 
-#ifdef LOW_PROF
-    left=0;
-#else
     left = alarm(IntegerOfTerm(t));
-#endif
     tout = MkIntegerTerm(left);
     return(Yap_unify(ARG2,tout));
   }