/*
* Function: startSignalHandlers()
*
* Run the handlers associated with the stacked up console events. Console
* event delivery is blocked for the duration of this call.
*/
void startSignalHandlers(Capability *cap)
{
StgStablePtr handler;
if (console_handler < 0) {
return;
}
blockUserSignals();
ACQUIRE_LOCK(&sched_mutex);
handler = deRefStablePtr((StgStablePtr)console_handler);
while (stg_pending_events > 0) {
stg_pending_events--;
scheduleThread(cap,
createIOThread(cap,
RtsFlags.GcFlags.initialStkSize,
rts_apply(cap,
(StgClosure *)handler,
rts_mkInt(cap,
stg_pending_buf[stg_pending_events]))));
}
RELEASE_LOCK(&sched_mutex);
unblockUserSignals();
}
void
scheduleFinalizers(Capability *cap, StgWeak *list)
{
StgWeak *w;
StgTSO *t;
StgMutArrPtrs *arr;
StgWord size;
nat n, i;
Task *task;
task = myTask();
if (task != NULL) {
task->running_finalizers = rtsTrue;
}
// count number of finalizers, and kill all the weak pointers first...
n = 0;
for (w = list; w; w = w->link) {
StgArrWords *farr;
// 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);
if (w->finalizer != &stg_NO_FINALIZER_closure) {
n++;
}
farr = (StgArrWords *)UNTAG_CLOSURE(w->cfinalizer);
if ((StgClosure *)farr != &stg_NO_FINALIZER_closure)
runCFinalizer((void *)farr->payload[0],
(void *)farr->payload[1],
(void *)farr->payload[2],
farr->payload[3]);
#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);
}
if (task != NULL) {
task->running_finalizers = rtsFalse;
}
// No finalizers to run?
if (n == 0) return;
debugTrace(DEBUG_weak, "weak: batching %d finalizers", n);
size = n + mutArrPtrsCardTableSize(n);
arr = (StgMutArrPtrs *)allocate(cap, sizeofW(StgMutArrPtrs) + size);
TICK_ALLOC_PRIM(sizeofW(StgMutArrPtrs), n, 0);
SET_HDR(arr, &stg_MUT_ARR_PTRS_FROZEN_info, CCS_SYSTEM);
arr->ptrs = n;
arr->size = size;
n = 0;
for (w = list; w; w = w->link) {
if (w->finalizer != &stg_NO_FINALIZER_closure) {
arr->payload[n] = w->finalizer;
n++;
}
}
// set all the cards to 1
for (i = n; i < size; i++) {
arr->payload[i] = (StgClosure *)(W_)(-1);
}
t = createIOThread(cap,
RtsFlags.GcFlags.initialStkSize,
rts_apply(cap,
rts_apply(cap,
(StgClosure *)runFinalizerBatch_closure,
rts_mkInt(cap,n)),
(StgClosure *)arr)
);
scheduleThread(cap,t);
}