[project @ 2005-01-28 12:55:17 by simonmar]

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

diff --git a/ghc/rts/RtsUtils.c b/ghc/rts/RtsUtils.c
index 119eb02..ce1c0a2 100644 (file)
--- a/ghc/rts/RtsUtils.c
+++ b/ghc/rts/RtsUtils.c
@@ -1,7 +1,6 @@
 /* -----------------------------------------------------------------------------
- * $Id: RtsUtils.c,v 1.29 2002/12/11 15:36:48 simonmar Exp $
  *
- * (c) The GHC Team, 1998-2002
+ * (c) The GHC Team, 1998-2004
  *
  * General utility functions used in the RTS.
  *
@@ -11,11 +10,8 @@
 /* #include "PosixSource.h" */
 
 #include "Rts.h"
-#include "RtsTypes.h"
 #include "RtsAPI.h"
 #include "RtsFlags.h"
-#include "Hooks.h"
-#include "Main.h"
 #include "RtsUtils.h"
 #include "Ticky.h"
 
@@ -34,54 +30,19 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdarg.h>
+#include <stdio.h>
 
-/* variable-argument internal error function. */
-
-void
-barf(char *s, ...)
-{
-  va_list ap;
-  va_start(ap,s);
-  /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
-  if (prog_argv != NULL && prog_argv[0] != NULL) {
-    fprintf(stderr, "%s: internal error: ", prog_argv[0]);
-  } else {
-    fprintf(stderr, "internal error: ");
-  }
-  vfprintf(stderr, s, ap);
-  fprintf(stderr, "\n");
-  fprintf(stderr, "    Please report this as a bug to glasgow-haskell-bugs@haskell.org,\n    or http://www.sourceforge.net/projects/ghc/\n");
-  fflush(stderr);
-  stg_exit(EXIT_INTERNAL_ERROR);
-  va_end(ap);
-}
-
-void
-prog_belch(char *s, ...)
-{
-  va_list ap;
-  va_start(ap,s);
-  /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
-  if (prog_argv != NULL && prog_argv[0] != NULL) {
-    fprintf(stderr, "%s: ", prog_argv[0]);
-  } 
-  vfprintf(stderr, s, ap);
-  fprintf(stderr, "\n");
-  va_end(ap);
-}
+#ifdef HAVE_SIGNAL_H
+#include <signal.h>
+#endif
 
-void
-belch(char *s, ...)
-{
-  va_list ap;
-  va_start(ap,s);
-  /* don't fflush(stdout); WORKAROUND bug in Linux glibc */
-  vfprintf(stderr, s, ap);
-  fprintf(stderr, "\n");
-  va_end(ap);
-}
+#if defined(THREADED_RTS) && defined(openbsd_HOST_OS) && defined(HAVE_PTHREAD_H)
+#include <pthread.h>
+#endif
 
-/* result-checking malloc wrappers. */
+/* -----------------------------------------------------------------------------
+   Result-checking malloc wrappers.
+   -------------------------------------------------------------------------- */
 
 void *
 stgMallocBytes (int n, char *msg)
@@ -110,18 +71,6 @@ stgReallocBytes (void *p, int n, char *msg)
 }
 
 void *
-stgMallocWords (int n, char *msg)
-{
-  return(stgMallocBytes(n * sizeof(W_), msg));
-}
-
-void *
-stgReallocWords (void *p, int n, char *msg)
-{
-  return(stgReallocBytes(p, n * sizeof(W_), msg));
-}
-
-void *
 stgCallocBytes (int n, int m, char *msg)
 {
   int   i;
@@ -131,6 +80,15 @@ stgCallocBytes (int n, int m, char *msg)
   return p;
 }
 
+/* To simplify changing the underlying allocator used
+ * by stgMallocBytes(), provide stgFree() as well.
+ */
+void
+stgFree(void* p)
+{
+  free(p);
+}
+
 void 
 _stgAssert (char *filename, unsigned int linenum)
 {
@@ -233,7 +191,7 @@ time_str(void)
  * clean up for us.
  * -------------------------------------------------------------------------- */
 
-#if !defined(mingw32_TARGET_OS)
+#if !defined(mingw32_HOST_OS)
 void
 resetNonBlockingFd(int fd)
 {
@@ -253,21 +211,26 @@ setNonBlockingFd(int fd)
 
   /* clear the non-blocking flag on this file descriptor */
   fd_flags = fcntl(fd, F_GETFL);
-  fcntl(fd, F_SETFL, fd_flags | O_NONBLOCK);
+  if (!(fd_flags & O_NONBLOCK)) {
+    fcntl(fd, F_SETFL, fd_flags | O_NONBLOCK);
+  }
 }
 #else
-/* Don't support non-blocking FDs (yet) on mingw */
+/* Stub defns -- async / non-blocking IO is not done 
+ * via O_NONBLOCK and select() under Win32. 
+ */
 void resetNonBlockingFd(int fd STG_UNUSED) {}
 void setNonBlockingFd(int fd STG_UNUSED) {}
 #endif
 
+#ifdef PAR
 static ullong startTime = 0;
 
 /* used in a parallel setup */
 ullong
 msTime(void)
 {
-# if defined(HAVE_GETCLOCK) && !defined(alpha_TARGET_ARCH) && !defined(hppa1_1_TARGET_ARCH)
+# if defined(HAVE_GETCLOCK) && !defined(alpha_HOST_ARCH) && !defined(hppa1_1_HOST_ARCH)
     struct timespec tv;
 
     if (getclock(TIMEOFDAY, &tv) != 0) {
@@ -276,7 +239,7 @@ msTime(void)
        stg_exit(EXIT_FAILURE);
     }
     return tv.tv_sec * LL(1000) + tv.tv_nsec / LL(1000000) - startTime;
-# elif HAVE_GETTIMEOFDAY && !defined(alpha_TARGET_ARCH)
+# elif HAVE_GETTIMEOFDAY && !defined(alpha_HOST_ARCH)
     struct timeval tv;
  
     if (gettimeofday(&tv, NULL) != 0) {
@@ -295,6 +258,7 @@ msTime(void)
     return t * LL(1000) - startTime;
 # endif
 }
+#endif /* PAR */
 
 /* -----------------------------------------------------------------------------
    Print large numbers, with punctuation.
@@ -332,3 +296,17 @@ heapCheckFail( void )
 }
 #endif
 
+/* 
+ * It seems that pthreads and signals interact oddly in OpenBSD & FreeBSD
+ * pthreads (and possibly others). When linking with -lpthreads, we
+ * have to use pthread_kill to send blockable signals. So use that
+ * when we have a threaded rts. So System.Posix.Signals will call
+ * genericRaise(), rather than raise(3).
+ */
+int genericRaise(int sig) {
+#if defined(THREADED_RTS) && (defined(openbsd_HOST_OS) || defined(freebsd_HOST_OS))
+        return pthread_kill(pthread_self(), sig);
+#else
+        return raise(sig);
+#endif
+}