Function extent_dalloc_wrapper

BeefRT/JEMalloc/src/extent.c:1027–1077

}

void
extent_dalloc_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
    edata_t *edata) {
	assert(edata_pai_get(edata) == EXTENT_PAI_PAC);
	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
	    WITNESS_RANK_CORE, 0);

	/* Avoid calling the default extent_dalloc unless have to. */
	if (!ehooks_dalloc_will_fail(ehooks)) {
		/* Remove guard pages for dalloc / unmap. */
		if (edata_guarded_get(edata)) {
			assert(ehooks_are_default(ehooks));
			san_unguard_pages_two_sided(tsdn, ehooks, edata,
			    pac->emap);
		}
		/*
		 * Deregister first to avoid a race with other allocating
		 * threads, and reregister if deallocation fails.
		 */
		extent_deregister(tsdn, pac, edata);
		if (!extent_dalloc_wrapper_try(tsdn, pac, ehooks, edata)) {
			return;
		}
		extent_reregister(tsdn, pac, edata);
	}

	/* Try to decommit; purge if that fails. */
	bool zeroed;
	if (!edata_committed_get(edata)) {
		zeroed = true;
	} else if (!extent_decommit_wrapper(tsdn, ehooks, edata, 0,
	    edata_size_get(edata))) {
		zeroed = true;
	} else if (!ehooks_purge_forced(tsdn, ehooks, edata_base_get(edata),
	    edata_size_get(edata), 0, edata_size_get(edata))) {
		zeroed = true;
	} else if (edata_state_get(edata) == extent_state_muzzy ||
	    !ehooks_purge_lazy(tsdn, ehooks, edata_base_get(edata),
	    edata_size_get(edata), 0, edata_size_get(edata))) {
		zeroed = false;
	} else {
		zeroed = false;
	}
	edata_zeroed_set(edata, zeroed);

	if (config_prof) {
		extent_gdump_sub(tsdn, edata);
	}

	extent_record(tsdn, pac, ehooks, &pac->ecache_retained, edata);
}

void
extent_destroy_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,