Fix building RTS with gcc 2.*; declare all variables at the top of a block

[ghc-hetmet.git] / rts / RtsStartup.c

diff --git a/rts/RtsStartup.c b/rts/RtsStartup.c
index 1d0fec5..cdb45c6 100644 (file)
--- a/rts/RtsStartup.c
+++ b/rts/RtsStartup.c
@@ -199,6 +199,7 @@ hs_init(int *argc, char **argv[])
 
     /* Parse the flags, separating the RTS flags from the programs args */
     if (argc != NULL && argv != NULL) {
+       setFullProgArgv(*argc,*argv);
        setupRtsFlags(argc, *argv, &rts_argc, rts_argv);
        setProgArgv(*argc,*argv);
     }
@@ -213,9 +214,6 @@ hs_init(int *argc, char **argv[])
     synchroniseSystem();             // calls initParallelSystem etc
 #endif /* PAR */
 
-    /* Perform initialisation of adjustor thunk layer. */
-    initAdjustor();
-
     /* initialise scheduler data structures (needs to be done before
      * initStorage()).
      */
@@ -248,6 +246,7 @@ hs_init(int *argc, char **argv[])
     initProfiling1();
 
     /* start the virtual timer 'subsystem'. */
+    initTimer();
     startTimer();
 
     /* Initialise the stats department */
@@ -357,12 +356,25 @@ hs_add_root(void (*init_root)(void))
     initProfiling2();
 }
 
-/* -----------------------------------------------------------------------------
-   Shutting down the RTS
-   -------------------------------------------------------------------------- */
+/* ----------------------------------------------------------------------------
+ * Shutting down the RTS
+ *
+ * The wait_foreign parameter means:
+ *       True  ==> wait for any threads doing foreign calls now.
+ *       False ==> threads doing foreign calls may return in the
+ *                 future, but will immediately block on a mutex.
+ *                 (capability->lock).
+ * 
+ * If this RTS is a DLL that we're about to unload, then you want
+ * safe=True, otherwise the thread might return to code that has been
+ * unloaded.  If this is a standalone program that is about to exit,
+ * then you can get away with safe=False, which is better because we
+ * won't hang on exit if there is a blocked foreign call outstanding.
+ *
+ ------------------------------------------------------------------------- */
 
-void
-hs_exit(void)
+static void
+hs_exit_(rtsBool wait_foreign)
 {
     if (hs_init_count <= 0) {
        errorBelch("warning: too many hs_exit()s");
@@ -388,7 +400,7 @@ hs_exit(void)
 #endif
 
     /* stop all running tasks */
-    exitScheduler();
+    exitScheduler(wait_foreign);
     
 #if defined(GRAN)
     /* end_gr_simulation prints global stats if requested -- HWL */
@@ -398,6 +410,7 @@ hs_exit(void)
     
     /* stop the ticker */
     stopTimer();
+    exitTimer();
 
     /* reset the standard file descriptors to blocking mode */
     resetNonBlockingFd(0);
@@ -452,16 +465,11 @@ hs_exit(void)
     /* free the stable pointer table */
     exitStablePtrTable();
 
-    freeProfiling1();
-
 #if defined(DEBUG)
     /* free the thread label table */
     freeThreadLabelTable();
 #endif
 
-    /* free hash table storage */
-    exitHashTable();
-
 #ifdef RTS_GTK_FRONTPANEL
     if (RtsFlags.GcFlags.frontpanel) {
        stopFrontPanel();
@@ -473,6 +481,7 @@ hs_exit(void)
 #endif
 
     endProfiling();
+    freeProfiling1();
 
 #ifdef PROFILING
     // Originally, this was in report_ccs_profiling().  Now, retainer
@@ -486,9 +495,12 @@ hs_exit(void)
 #endif
 
 #if defined(mingw32_HOST_OS) && !defined(THREADED_RTS)
-    shutdownAsyncIO();
+    shutdownAsyncIO(wait_foreign);
 #endif
 
+    /* free hash table storage */
+    exitHashTable();
+
     // Finally, free all our storage
     freeStorage();
 
@@ -499,6 +511,14 @@ hs_exit(void)
 
 }
 
+// The real hs_exit():
+void
+hs_exit(void)
+{
+    hs_exit_(rtsTrue);
+    // be safe; this might be a DLL
+}
+
 // Compatibility interfaces
 void
 shutdownHaskell(void)
@@ -511,7 +531,8 @@ shutdownHaskellAndExit(int n)
 {
     if (hs_init_count == 1) {
        OnExitHook();
-       hs_exit();
+       hs_exit_(rtsFalse);
+        // we're about to exit(), no need to wait for foreign calls to return.
 #if defined(PAR)
        /* really exit (stg_exit() would call shutdownParallelSystem() again) */
        exit(n);