Exemple #1
0
void
sml_heap_gc()
{
	GIANT_LOCK(NULL);
	STOP_THE_WORLD();
	sml_rootset_enum_ptr(trace, MAJOR);
	sml_malloc_pop_and_mark(trace, MAJOR);
	sml_check_finalizer(trace, MAJOR);
	sml_malloc_sweep(MAJOR);
	RUN_THE_WORLD();
	GIANT_UNLOCK();
	sml_run_finalizer(NULL);
}
Exemple #2
0
static void
do_gc()
{
	DBG(("start gc"));

		clear_all_bitmaps();

	sml_rootset_enum_ptr(mark);
	sml_malloc_pop_and_mark(mark);

	/* check finalization */
	sml_check_finalizer(mark);

		sweep();
		shrink_heap(1);

	/* sweep malloc heap */
	sml_malloc_sweep();


	DBG(("gc finished."));
}
Exemple #3
0
static void
do_gc(void)
{
#ifdef GCTIME
	sml_timer_t b_start, b_end;
	sml_time_t gctime;
#endif /* GCTIME */
#ifdef GCSTAT
	sml_time_t t;
#endif /* GCSTAT */

	STOP_THE_WORLD();

#ifdef GCSTAT
	if (gcstat.verbose >= GCSTAT_VERBOSE_COUNT) {
		stat_notice("---");
		stat_notice("event: start gc");
		stat_notice("trigger: %u", gcstat.last.trigger);
		print_alloc_count();
		print_heap_occupancy();
	}
	clear_last_counts();
#endif /* GCSTAT */

#ifdef GCTIME
	gcstat.gc.count++;
	sml_timer_now(b_start);
#endif /* GCTIME */

	heap_space_unprotect(&sml_heap_to_space);

	DBG(("start gc (%lu/%lu used) %p -> %p",
	     (unsigned long)HEAP_USED(sml_heap_from_space),
	     (unsigned long)HEAP_TOTAL(sml_heap_from_space),
	     sml_heap_from_space.base, sml_heap_to_space.base));

	sml_rootset_enum_ptr(forward, MAJOR);

	DBG(("copying root completed"));

	/* forward objects which are reachable from live objects. */
	forward_region(HEAP_START(sml_heap_to_space));

	sml_malloc_pop_and_mark(forward_deep, MAJOR);

#ifndef FAIR_COMPARISON
	/* check finalization */
	sml_check_finalizer(forward_deep, MAJOR);
#endif /* FAIR_COMPARISON */

	/* clear from-space, and swap two spaces. */
	heap_space_clear(&sml_heap_from_space);
	heap_space_swap();
	heap_space_protect(&sml_heap_to_space);

	/* sweep malloc heap */
	sml_malloc_sweep(MAJOR);

	DBG(("gc finished. remain %lu bytes",
	     (unsigned long)HEAP_USED(sml_heap_from_space)));

#ifdef GCTIME
	sml_timer_now(b_end);
#endif /* GCTIME */

#ifdef GCTIME
	sml_timer_dif(b_start, b_end, gctime);
	sml_time_accum(gctime, gcstat.gc.total_time);
#endif /* GCTIME */
#ifdef GCSTAT
	gcstat.gc.total_copy_bytes += gcstat.last.copy_bytes;
	gcstat.gc.total_copy_count += gcstat.last.copy_count;
	gcstat.gc.total_forward_count += gcstat.last.forward_count;
	if (gcstat.verbose >= GCSTAT_VERBOSE_GC) {
		sml_timer_dif(gcstat.exec_begin, b_start, t);
		stat_notice("time: "TIMEFMT, TIMEARG(t));
		stat_notice("---");
		stat_notice("event: end gc");
		sml_timer_dif(gcstat.exec_begin, b_end, t);
		stat_notice("time: "TIMEFMT, TIMEARG(t));
		stat_notice("duration: "TIMEFMT, TIMEARG(gctime));
		stat_notice("copy: %u", gcstat.last.copy_count);
		stat_notice("forward: %u", gcstat.last.forward_count);
		stat_notice("copy_bytes: %lu",
			    (unsigned long)gcstat.last.copy_bytes);
		print_heap_occupancy();
	}
#endif /* GCSTAT */

	RUN_THE_WORLD();
}
Exemple #4
0
void
sml_heap_gc(void)
{
#ifdef GCTIME
    sml_timer_t b_start, b_end;
    sml_time_t gctime;
//#endif /* GCTIME */
//#ifdef GCSTAT
    sml_time_t cleartime,t;
    sml_timer_t b_cleared;
#endif /* GCSTAT */

#ifdef GCSTAT
    if (gcstat.verbose >= GCSTAT_VERBOSE_COUNT) {
        stat_notice("---");
        stat_notice("event: start gc");
        if (gcstat.last.trigger)
            stat_notice("trigger: %u", gcstat.last.trigger);
        print_alloc_count();
        print_heap_occupancy();
    }
    clear_last_counts();
#endif /* GCSTAT */

    DBG(("start gc"));

#ifdef GCTIME
    gcstat.gc.count++;
    sml_timer_now(b_start);
#endif /* GCTIME */

#ifdef PRINT_ALLOC_TIME
    live_tmp = 0;
    count_gc++;
    double st;
    getRusage(st);
#endif /* PRINT_ALLOC_TIME */

    all_bitmaps_space_clear();

#ifdef GCTIME//GCSTAT
    sml_timer_now(b_cleared);
#endif /* GCSTAT */

#ifdef PRINT_ALLOC_TIME
    double en;
    getRusage(en);
    all_time_bit_clear += (en - st);
#endif /* PRINT_ALLOC_TIME */

    /* mark root objects */
    sml_rootset_enum_ptr(mark, MAJOR);

    DBG(("marking root objects completed"));

    /* STACK POP */
    while (marking_stack.bottom != marking_stack.top) {
        marking_stack.top--;
        mark_children((*(marking_stack.top)));
    }

    sml_malloc_pop_and_mark(mark_all, MAJOR);

    DBG(("marking completed"));

#ifdef CHECK
    clear_heap();
#endif /* CHECK */

    /* check finalization */
    sml_check_finalizer(mark_all, MAJOR);

    /* sweep malloc heap */
    sml_malloc_sweep(MAJOR);

#ifdef GCTIME
    sml_timer_now(b_end);
#endif /* GCTIME */

    DBG(("gc finished."));

#ifdef GCTIME
    sml_timer_dif(b_start, b_end, gctime);
    sml_time_accum(gctime, gcstat.gc.total_time);
    sml_timer_dif(b_start, b_cleared, cleartime);
    sml_time_accum(cleartime, gcstat.gc.clear_time);
#endif
#ifdef GCSTAT
    if (gcstat.verbose >= GCSTAT_VERBOSE_GC) {
        sml_timer_dif(gcstat.exec_begin, b_start, t);
        stat_notice("time: "TIMEFMT, TIMEARG(t));
        stat_notice("---");
        stat_notice("event: end gc");
        sml_timer_dif(gcstat.exec_begin, b_end, t);
        stat_notice("time: "TIMEFMT, TIMEARG(t));
        stat_notice("duration: "TIMEFMT, TIMEARG(gctime));
        stat_notice("clear_time: "TIMEFMT, TIMEARG(cleartime));
        stat_notice("clear_bytes: %lu", gcstat.last.clear_bytes);
        stat_notice("push: %u", gcstat.last.push_count);
        stat_notice("trace: %u", gcstat.last.trace_count);
        print_heap_occupancy();
    }
#endif /* GCSTAT */

#ifdef PRINT_ALLOC_TIME
    if(live_tmp > live_max) live_max = live_tmp;
    if(live_tmp < live_min) live_min = live_tmp;
    live_all += live_tmp;

    unsigned int i;
    for(i=0; i<THE_NUMBER_OF_FIXED_BLOCK; i++) {
        if(((print_info[i].count_mark - print_info[i].tmp_mark) * print_info[i].block_size)
                > print_info[i].max_live)
            print_info[i].max_live =
                ((print_info[i].count_mark - print_info[i].tmp_mark) * print_info[i].block_size);
        print_info[i].tmp_mark=print_info[i].count_mark;
    }
#endif /* PRINT_ALLOC_TIME */

    /* start finalizers */
    sml_run_finalizer(NULL);
}