Expose all EventLog events as DTrace probes

- Defines a DTrace provider, called 'HaskellEvent', that provides a probe
  for every event of the eventlog framework.
- In contrast to the original eventlog, the DTrace probes are available in
  all flavours of the runtime system (DTrace probes have virtually no
  overhead if not enabled); when -DTRACING is defined both the regular
  event log as well as DTrace probes can be used.
- Currently, Mac OS X only.  User-space DTrace probes are implemented
  differently on Mac OS X than in the original DTrace implementation.
  Nevertheless, it shouldn't be too hard to enable these probes on other
  platforms, too.
- Documentation is at http://hackage.haskell.org/trac/ghc/wiki/DTrace

1 files changed, 2 insertions, 2 deletions

diff --git a/rts/Threads.c b/rts/Threads.c
index 799cf9062a..8eaa951a2d 100644
--- a/rts/Threads.c
+++ b/rts/Threads.c
@@ -107,7 +107,7 @@ createThread(Capability *cap, nat size)
     RELEASE_LOCK(&sched_mutex);
     
     // ToDo: report the stack size in the event?
-    traceSchedEvent (cap, EVENT_CREATE_THREAD, tso, tso->stack_size);
+    traceEventCreateThread(cap, tso);
 
     return tso;
 }
@@ -254,7 +254,7 @@ unblockOne_ (Capability *cap, StgTSO *tso,
   cap->context_switch = 1;
 #endif
 
-  traceSchedEvent (cap, EVENT_THREAD_WAKEUP, tso, tso->cap->no);
+  traceEventThreadWakeup (cap, tso, tso->cap->no);
 
   return next;
 }