{
bdescr *bd;
step *stp;
- lnat live, allocated;
+ lnat live, allocated, max_copied, avg_copied;
lnat oldgen_saved_blocks = 0;
gc_thread *saved_gct;
nat g, s, t, n;
// not step 0
for (s = 1; s < total_steps; s++) {
ws = &thr->steps[s];
- // Not true?
- // ASSERT( ws->scan_bd == ws->todo_bd );
- ASSERT( ws->scan_bd ? ws->scan_bd->u.scan == ws->scan_bd->free : 1 );
// Push the final block
- if (ws->scan_bd) { push_scanned_block(ws->scan_bd, ws); }
-
+ if (ws->todo_bd) {
+ push_scanned_block(ws->todo_bd, ws);
+ }
+
+ ASSERT(gct->scan_bd == NULL);
ASSERT(countBlocks(ws->scavd_list) == ws->n_scavd_blocks);
prev = ws->part_list;
/* run through all the generations/steps and tidy up
*/
copied = 0;
+ max_copied = 0;
+ avg_copied = 0;
{
nat i;
for (i=0; i < n_gc_threads; i++) {
if (n_gc_threads > 1) {
trace(TRACE_gc,"thread %d:", i);
trace(TRACE_gc," copied %ld", gc_threads[i]->copied * sizeof(W_));
+ trace(TRACE_gc," scanned %ld", gc_threads[i]->scanned * sizeof(W_));
trace(TRACE_gc," any_work %ld", gc_threads[i]->any_work);
trace(TRACE_gc," no_work %ld", gc_threads[i]->no_work);
trace(TRACE_gc," scav_find_work %ld", gc_threads[i]->scav_find_work);
}
copied += gc_threads[i]->copied;
+ max_copied = stg_max(gc_threads[i]->copied, max_copied);
+ }
+ if (n_gc_threads == 1) {
+ max_copied = 0;
+ avg_copied = 0;
+ } else {
+ avg_copied = copied;
}
}
for (g = 0; g < RtsFlags.GcFlags.generations; g++) {
- if (g <= N) {
+ if (g == N) {
generations[g].collections++; // for stats
+ if (n_gc_threads > 1) generations[g].par_collections++;
}
// Count the mutable list as bytes "copied" for the purposes of
#endif
// ok, GC over: tell the stats department what happened.
- stat_endGC(allocated, live, copied, N);
+ stat_endGC(allocated, live, copied, N, max_copied, avg_copied);
#if defined(RTS_USER_SIGNALS)
if (RtsFlags.MiscFlags.install_signal_handlers) {
t->id = 0;
initCondition(&t->wake_cond);
initMutex(&t->wake_mutex);
- t->wakeup = rtsFalse;
+ t->wakeup = rtsTrue; // starts true, so we can wait for the
+ // thread to start up, see wakeup_gc_threads
t->exit = rtsFalse;
#endif
ASSERT(s == ws->step->abs_no);
ws->gct = t;
- ws->scan_bd = NULL;
-
ws->todo_bd = NULL;
ws->buffer_todo_bd = NULL;
nat i;
for (i=1; i < n_threads; i++) {
inc_running();
- ACQUIRE_LOCK(&gc_threads[i]->wake_mutex);
+ debugTrace(DEBUG_gc, "waking up gc thread %d", i);
+ do {
+ ACQUIRE_LOCK(&gc_threads[i]->wake_mutex);
+ if (gc_threads[i]->wakeup) {
+ RELEASE_LOCK(&gc_threads[i]->wake_mutex);
+ continue;
+ } else {
+ break;
+ }
+ } while (1);
gc_threads[i]->wakeup = rtsTrue;
signalCondition(&gc_threads[i]->wake_cond);
RELEASE_LOCK(&gc_threads[i]->wake_mutex);
ws = &gc_threads[t]->steps[g * RtsFlags.GcFlags.steps + s];
- ws->scan_bd = NULL;
-
ws->todo_large_objects = NULL;
ws->part_list = NULL;
stp->n_blocks -= 1;
stp->n_words -= ws->todo_bd->free - ws->todo_bd->start;
ws->todo_bd->link = NULL;
-
- // this block is also the scan block; we must scan
- // from the current end point.
- ws->scan_bd = ws->todo_bd;
- ws->scan_bd->u.scan = ws->scan_bd->free;
-
- // subtract the contents of this block from the stats,
- // because we'll count the whole block later.
- copied -= ws->scan_bd->free - ws->scan_bd->start;
+ // we must scan from the current end point.
+ ws->todo_bd->u.scan = ws->todo_bd->free;
}
else
{
- ws->scan_bd = NULL;
ws->todo_bd = NULL;
alloc_todo_block(ws,0);
}
{
t->static_objects = END_OF_STATIC_LIST;
t->scavenged_static_objects = END_OF_STATIC_LIST;
+ t->scan_bd = NULL;
t->evac_step = 0;
t->failed_to_evac = rtsFalse;
t->eager_promotion = rtsTrue;
t->thunk_selector_depth = 0;
t->copied = 0;
+ t->scanned = 0;
t->any_work = 0;
t->no_work = 0;
t->scav_find_work = 0;
-
}
/* -----------------------------------------------------------------------------