dist/src/extent.c

911  * it, this splits off lead and trail extents, leaving extent pointing to an
913  * This function doesn't put lead or trail into any extents_t; it's the caller's
918 	 * Split successfully.  lead, extent, and trail, are modified to extents
930 	 * None of lead, extent, or trail are valid.
939     extent_t **extent, extent_t **lead, extent_t **trail,
954 	*trail = NULL;
971 	/* Split the trail. */
973 		*trail = extent_split_impl(tsdn, arena, r_extent_hooks, *extent,
976 		if (*trail == NULL) {
1018 	extent_t *trail;
1023 	    tsdn, arena, r_extent_hooks, rtree_ctx, &extent, &lead, &trail,
1031 		if (trail != NULL) {
1032 			extent_deactivate(tsdn, arena, extents, trail);
1300 	extent_t *trail;
1304 	    tsdn, arena, r_extent_hooks, rtree_ctx, &extent, &lead, &trail,
1313 		if (trail != NULL) {
1315 			    &arena->extents_retained, trail, true);
1971  * with the trail (the higher addressed portion).  This makes 'extent' the lead,
1972  * and returns the trail (except in case of error).
1989 	extent_t *trail = extent_alloc(tsdn, arena);
1990 	if (trail == NULL) {
1994 	extent_init(trail, arena, (void *)((uintptr_t)extent_base_get(extent) +
2014 	extent_rtree_leaf_elms_lookup(tsdn, rtree_ctx, trail, false, true,
2022 	extent_lock2(tsdn, extent, trail);
2042 	extent_rtree_write_acquired(tsdn, trail_elm_a, trail_elm_b, trail,
2045 	extent_unlock2(tsdn, extent, trail);
2047 	return trail;
2049 	extent_unlock2(tsdn, extent, trail);
2051 	extent_dalloc(tsdn, arena, trail);