initProfiling1();
/* start the virtual timer 'subsystem'. */
+ initTimer();
startTimer();
/* Initialise the stats department */
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");
#endif
/* stop all running tasks */
- exitScheduler();
+ exitScheduler(wait_foreign);
#if defined(GRAN)
/* end_gr_simulation prints global stats if requested -- HWL */
/* stop the ticker */
stopTimer();
+ exitTimer();
/* reset the standard file descriptors to blocking mode */
resetNonBlockingFd(0);
/* free the stable pointer table */
exitStablePtrTable();
- freeProfiling1();
-
#if defined(DEBUG)
/* free the thread label table */
freeThreadLabelTable();
#endif
endProfiling();
+ freeProfiling1();
#ifdef PROFILING
// Originally, this was in report_ccs_profiling(). Now, retainer
#endif
#if defined(mingw32_HOST_OS) && !defined(THREADED_RTS)
- shutdownAsyncIO();
+ shutdownAsyncIO(wait_foreign);
#endif
/* free hash table storage */
}
+// The real hs_exit():
+void
+hs_exit(void)
+{
+ hs_exit_(rtsTrue);
+ // be safe; this might be a DLL
+}
+
// Compatibility interfaces
void
shutdownHaskell(void)
{
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);