Function pac_decay_stashed

BeefRT/JEMalloc/src/pac.c:362–425

}

static size_t
pac_decay_stashed(tsdn_t *tsdn, pac_t *pac, decay_t *decay,
    pac_decay_stats_t *decay_stats, ecache_t *ecache, bool fully_decay,
    edata_list_inactive_t *decay_extents) {
	bool err;

	size_t nmadvise = 0;
	size_t nunmapped = 0;
	size_t npurged = 0;

	ehooks_t *ehooks = pac_ehooks_get(pac);

	bool try_muzzy = !fully_decay
	    && pac_decay_ms_get(pac, extent_state_muzzy) != 0;

	for (edata_t *edata = edata_list_inactive_first(decay_extents); edata !=
	    NULL; edata = edata_list_inactive_first(decay_extents)) {
		edata_list_inactive_remove(decay_extents, edata);

		size_t size = edata_size_get(edata);
		size_t npages = size >> LG_PAGE;

		nmadvise++;
		npurged += npages;

		switch (ecache->state) {
		case extent_state_active:
			not_reached();
		case extent_state_dirty:
			if (try_muzzy) {
				err = extent_purge_lazy_wrapper(tsdn, ehooks,
				    edata, /* offset */ 0, size);
				if (!err) {
					ecache_dalloc(tsdn, pac, ehooks,
					    &pac->ecache_muzzy, edata);
					break;
				}
			}
			JEMALLOC_FALLTHROUGH;
		case extent_state_muzzy:
			extent_dalloc_wrapper(tsdn, pac, ehooks, edata);
			nunmapped += npages;
			break;
		case extent_state_retained:
		default:
			not_reached();
		}
	}

	if (config_stats) {
		LOCKEDINT_MTX_LOCK(tsdn, *pac->stats_mtx);
		locked_inc_u64(tsdn, LOCKEDINT_MTX(*pac->stats_mtx),
		    &decay_stats->npurge, 1);
		locked_inc_u64(tsdn, LOCKEDINT_MTX(*pac->stats_mtx),
		    &decay_stats->nmadvise, nmadvise);
		locked_inc_u64(tsdn, LOCKEDINT_MTX(*pac->stats_mtx),
		    &decay_stats->purged, npurged);
		LOCKEDINT_MTX_UNLOCK(tsdn, *pac->stats_mtx);