/* -----------------------------------------------------------------------------
- * $Id: Weak.c,v 1.20 2001/11/26 16:54:22 simonmar Exp $
+ * $Id: Weak.c,v 1.29 2003/03/26 17:43:05 sof Exp $
*
* (c) The GHC Team, 1998-1999
*
* ---------------------------------------------------------------------------*/
#include "PosixSource.h"
+#define COMPILING_RTS_MAIN
#include "Rts.h"
-#include "RtsAPI.h"
#include "SchedAPI.h"
#include "RtsFlags.h"
#include "Weak.h"
#include "Storage.h"
+#include "Schedule.h"
#include "Prelude.h"
+#include "RtsAPI.h"
StgWeak *weak_ptr_list;
{
StgWeak *w;
+#if defined(RTS_SUPPORTS_THREADS)
+ rts_lock();
+#endif
while ((w = weak_ptr_list)) {
weak_ptr_list = w->link;
if (w->header.info != &stg_DEAD_WEAK_info) {
w->header.info = &stg_DEAD_WEAK_info;
IF_DEBUG(weak,fprintf(stderr,"Finalising weak pointer at %p -> %p\n", w, w->key));
if (w->finalizer != &stg_NO_FINALIZER_closure) {
+#if defined(RTS_SUPPORTS_THREADS)
rts_evalIO(w->finalizer,NULL);
+ rts_unlock();
+ rts_lock();
+#else
+ rts_mainLazyIO(w->finalizer,NULL);
+#endif
}
}
}
+#if defined(RTS_SUPPORTS_THREADS)
+ rts_unlock();
+#endif
}
/*
* The weak pointer object itself may not be alive - i.e. we may be
* looking at either an object in from-space or one in to-space. It
* doesn't really matter either way.
+ *
+ * Pre-condition: sched_mutex _not_ held.
*/
void
StgMutArrPtrs *arr;
nat n;
- /* count number of finalizers first... */
- for (n = 0, w = list; w; w = w->link) {
- if (w->finalizer != &stg_NO_FINALIZER_closure)
- n++;
- }
-
- if (n == 0) return;
-
- IF_DEBUG(weak,fprintf(stderr,"weak: batching %d finalizers\n", n));
+ // count number of finalizers, and kill all the weak pointers first...
+ n = 0;
+ for (w = list; w; w = w->link) {
- arr = (StgMutArrPtrs *)allocate(sizeofW(StgMutArrPtrs) + n);
- SET_HDR(arr, &stg_MUT_ARR_PTRS_FROZEN_info, CCS_SYSTEM);
- arr->ptrs = n;
+ // Better not be a DEAD_WEAK at this stage; the garbage
+ // collector removes DEAD_WEAKs from the weak pointer list.
+ ASSERT(w->header.info != &stg_DEAD_WEAK_info);
- for (n = 0, w = list; w; w = w->link) {
if (w->finalizer != &stg_NO_FINALIZER_closure) {
- arr->payload[n] = w->finalizer;
n++;
}
#endif
SET_HDR(w, &stg_DEAD_WEAK_info, w->header.prof.ccs);
}
+
+ // No finalizers to run?
+ if (n == 0) return;
+
+ IF_DEBUG(weak,fprintf(stderr,"weak: batching %d finalizers\n", n));
+
+ arr = (StgMutArrPtrs *)allocate(sizeofW(StgMutArrPtrs) + n);
+ TICK_ALLOC_PRIM(sizeofW(StgMutArrPtrs), n, 0);
+ SET_HDR(arr, &stg_MUT_ARR_PTRS_FROZEN_info, CCS_SYSTEM);
+ arr->ptrs = n;
+
+ n = 0;
+ for (w = list; w; w = w->link) {
+ if (w->finalizer != &stg_NO_FINALIZER_closure) {
+ arr->payload[n] = w->finalizer;
+ n++;
+ }
+ }
t = createIOThread(RtsFlags.GcFlags.initialStkSize,
rts_apply(