/* -----------------------------------------------------------------------------
- * $Id: Weak.c,v 1.15 2000/06/20 15:18:40 simonmar Exp $
+ * $Id: Weak.c,v 1.23 2002/04/26 22:31:31 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 "Prelude.h"
+#include "RtsAPI.h"
StgWeak *weak_ptr_list;
while ((w = weak_ptr_list)) {
weak_ptr_list = w->link;
- if (w->header.info != &DEAD_WEAK_info) {
- w->header.info = &DEAD_WEAK_info;
+ 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 != &NO_FINALIZER_closure) {
- rts_evalIO(w->finalizer,NULL);
+ if (w->finalizer != &stg_NO_FINALIZER_closure) {
+ rts_mainEvalIO(w->finalizer,NULL);
}
}
}
* 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
/* count number of finalizers first... */
for (n = 0, w = list; w; w = w->link) {
- if (w->finalizer != &NO_FINALIZER_closure)
+ if (w->header.info != &stg_DEAD_WEAK_info &&
+ w->finalizer != &stg_NO_FINALIZER_closure)
n++;
}
IF_DEBUG(weak,fprintf(stderr,"weak: batching %d finalizers\n", n));
arr = (StgMutArrPtrs *)allocate(sizeofW(StgMutArrPtrs) + n);
- SET_HDR(arr, &MUT_ARR_PTRS_FROZEN_info, CCS_SYSTEM);
+ SET_HDR(arr, &stg_MUT_ARR_PTRS_FROZEN_info, CCS_SYSTEM);
arr->ptrs = n;
for (n = 0, w = list; w; w = w->link) {
- if (w->finalizer != &NO_FINALIZER_closure) {
+ if (w->header.info != &stg_DEAD_WEAK_info &&
+ w->finalizer != &stg_NO_FINALIZER_closure) {
arr->payload[n] = w->finalizer;
n++;
}
- w->header.info = &DEAD_WEAK_info;
+
+#ifdef PROFILING
+ // A weak pointer is inherently used, so we do not need to call
+ // LDV_recordDead().
+ //
+ // Furthermore, when PROFILING is turned on, dead weak
+ // pointers are exactly as large as weak pointers, so there is
+ // no need to fill the slop, either. See stg_DEAD_WEAK_info
+ // in StgMiscClosures.hc.
+#endif
+ SET_HDR(w, &stg_DEAD_WEAK_info, w->header.prof.ccs);
}
t = createIOThread(RtsFlags.GcFlags.initialStkSize,