X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Frts%2FMain.c;h=7721438646fcd663ce064a102234c94634fe69eb;hb=6d194f48d7313fa8daa004b7b3e3a55ffa52f4a9;hp=86d4ac961acf4fafe410a244628835719e1d4f27;hpb=c108d3f61b1a5fefa8e15aa6ada4ff547bcbb4e5;p=ghc-hetmet.git

diff --git a/ghc/rts/Main.c b/ghc/rts/Main.c
index 86d4ac9..7721438 100644
--- a/ghc/rts/Main.c
+++ b/ghc/rts/Main.c
@@ -1,5 +1,4 @@
 /* -----------------------------------------------------------------------------
- * $Id: Main.c,v 1.19 2000/03/30 12:03:30 simonmar Exp $
  *
  * (c) The GHC Team 1998-2000
  *
@@ -9,24 +8,23 @@
 
 #define COMPILING_RTS_MAIN
 
+#include "PosixSource.h"
 #include "Rts.h"
 #include "RtsAPI.h"
 #include "SchedAPI.h"
+#include "Schedule.h"
 #include "RtsFlags.h"
 #include "RtsUtils.h"
 #include "Prelude.h"
+#include <stdlib.h>
 
 #ifdef DEBUG
 # include "Printer.h"   /* for printing        */
 #endif
 
-#ifdef INTERPRETER
-# include "Assembler.h"
-#endif
-
 #ifdef PAR
-# include "ParInit.h"
 # include "Parallel.h"
+# include "ParallelRts.h"
 # include "LLC.h"
 #endif
 
@@ -38,19 +36,19 @@
 # include <windows.h>
 #endif
 
-EXTFUN(__init_Main);
+extern void __stginit_ZCMain(void);
 
 /* Hack: we assume that we're building a batch-mode system unless 
  * INTERPRETER is set
  */
-# ifndef INTERPRETER /* Hack */
+#ifndef INTERPRETER /* Hack */
 int main(int argc, char *argv[])
 {
     int exit_status;
     SchedulerStatus status;
     /* all GranSim/GUM init is done in startupHaskell; sets IAmMainThread! */
 
-    startupHaskell(argc,argv,__init_Main);
+    startupHaskell(argc,argv,__stginit_ZCMain);
 
     /* kick off the computation by creating the main thread with a pointer
        to mainIO_closure representing the computation of the overall program;
@@ -65,7 +63,7 @@ int main(int argc, char *argv[])
 
 #  if defined(PAR)
 
-#   if DEBUG
+#   if defined(DEBUG)
     { /* a wait loop to allow attachment of gdb to UNIX threads */
       nat i, j, s;
 
@@ -78,53 +76,59 @@ int main(int argc, char *argv[])
 #   endif
 
     if (IAmMainThread == rtsTrue) {
-      fprintf(stderr, "Main Thread Started ...\n");
+      IF_PAR_DEBUG(verbose,
+		   debugBelch("==== [%x] Main Thread Started ...\n", mytid));
 
       /* ToDo: Dump event for the main thread */
-      status = rts_evalIO(mainIO_closure, NULL);
+      status = rts_mainLazyIO((HaskellObj)mainIO_closure, NULL);
     } else {
       /* Just to show we're alive */
       IF_PAR_DEBUG(verbose,
-		   fprintf(stderr, "== [%x] Non-Main PE enters scheduler without work ...\n",
+		   debugBelch("== [%x] Non-Main PE enters scheduler via taskStart() without work ...\n",
 			   mytid));
      
       /* all non-main threads enter the scheduler without work */
-      status = schedule( /* nothing */ );
+      taskStart();       
+      status = Success;  // declare victory (see shutdownParallelSystem)
     }
 
 #  elif defined(GRAN)
 
     /* ToDo: Dump event for the main thread */
-    status = rts_evalIO(mainIO_closure, NULL);
+    status = rts_mainLazyIO(mainIO_closure, NULL);
 
 #  else /* !PAR && !GRAN */
 
     /* ToDo: want to start with a larger stack size */
-    status = rts_evalIO((StgClosure *)mainIO_closure, NULL);
+    rts_lock();
+    status = rts_evalLazyIO((HaskellObj)mainIO_closure, NULL);
+    rts_unlock();
 
 #  endif /* !PAR && !GRAN */
 
-    // ToDo: update for parallel execution
     /* check the status of the entire Haskell computation */
     switch (status) {
-    case Deadlock:
-      prog_belch("no threads to run:  infinite loop or deadlock?");
-      exit_status = EXIT_DEADLOCK;
-      break;
     case Killed:
-      prog_belch("main thread killed");
+      errorBelch("main thread exited (uncaught exception)");
       exit_status = EXIT_KILLED;
       break;
     case Interrupted:
-      prog_belch("interrupted");
+      errorBelch("interrupted");
       exit_status = EXIT_INTERRUPTED;
       break;
     case Success:
       exit_status = EXIT_SUCCESS;
       break;
+#if defined(PAR)
+    case NoStatus:
+      errorBelch("main thread PE killed; probably due to failure of another PE; check /tmp/pvml...");
+      exit_status = EXIT_KILLED;
+      break;
+#endif 
     default:
       barf("main thread completed with invalid status");
     }
     shutdownHaskellAndExit(exit_status);
+    return 0; /* never reached, keep gcc -Wall happy */
 }
 # endif /* BATCH_MODE */