Esempio n. 1
0
/*
 * __free_page_col_fix --
 *	Discard a WT_PAGE_COL_FIX page.
 */
static void
__free_page_col_fix(WT_SESSION_IMPL *session, WT_PAGE *page)
{
	WT_INSERT_HEAD *append;

	/* Free the append array. */
	if ((append = WT_COL_APPEND(page)) != NULL) {
		__free_skip_list(session, WT_SKIP_FIRST(append));
		__wt_free(session, append);
		__wt_free(session, page->modify->append);
	}

	/* Free the update array. */
	if (page->modify != NULL && page->modify->update != NULL)
		__free_skip_array(session, page->modify->update, 1);
}
Esempio n. 2
0
/*
 * __free_page_modify --
 *	Discard the page's associated modification structures.
 */
static void
__free_page_modify(WT_SESSION_IMPL *session, WT_PAGE *page)
{
	WT_INSERT_HEAD *append;
	WT_PAGE_MODIFY *mod;

	mod = page->modify;

	switch (F_ISSET(mod, WT_PM_REC_MASK)) {
	case WT_PM_REC_SPLIT:
		/*
		 * If the page split, there may one or more pages linked from
		 * the page; walk the list, discarding pages.
		 */
		__wt_page_out(session, &mod->u.split);
		break;
	case WT_PM_REC_REPLACE:
		/*
		 * Discard any replacement address: this memory is usually moved
		 * into the parent's WT_REF, but at the root that can't happen.
		 */
		__wt_free(session, mod->u.replace.addr);
		break;
	default:
		break;
	}

	/* Free the append array. */
	if ((append = WT_COL_APPEND(page)) != NULL) {
		__free_skip_list(session, WT_SKIP_FIRST(append));
		__wt_free(session, append);
		__wt_free(session, mod->append);
	}

	/* Free the insert/update array. */
	if (mod->update != NULL)
		__free_skip_array(session, mod->update,
		    page->type == WT_PAGE_COL_FIX ? 1 : page->entries);

	/* Discard any objects the page was tracking plus associated memory. */
	__wt_rec_track_discard(session, page);
	__wt_free(session, mod->track);
	__wt_free(session, page->modify);
}
Esempio n. 3
0
/*
 * __free_skip_array --
 *	Discard an array of skip list headers.
 */
static void
__free_skip_array(
    WT_SESSION_IMPL *session, WT_INSERT_HEAD **head_arg, uint32_t entries)
{
	WT_INSERT_HEAD **head;

	/*
	 * For each non-NULL slot in the page's array of inserts, free the
	 * linked list anchored in that slot.
	 */
	for (head = head_arg; entries > 0; --entries, ++head)
		if (*head != NULL) {
			__free_skip_list(session, WT_SKIP_FIRST(*head));
			__wt_free(session, *head);
		}

	/* Free the page's array of inserts. */
	__wt_free(session, head_arg);
}
Esempio n. 4
0
/*
 * __free_page_col_var --
 *	Discard a WT_PAGE_COL_VAR page.
 */
static void
__free_page_col_var(WT_SESSION_IMPL *session, WT_PAGE *page)
{
	WT_INSERT_HEAD *append;

	/* Free the in-memory index array. */
	__wt_free(session, page->u.col_var.d);

	/* Free the RLE lookup array. */
	__wt_free(session, page->u.col_var.repeats);

	/* Free the append array. */
	if ((append = WT_COL_APPEND(page)) != NULL) {
		__free_skip_list(session, WT_SKIP_FIRST(append));
		__wt_free(session, append);
		__wt_free(session, page->modify->append);
	}

	/* Free the insert array. */
	if (page->modify != NULL && page->modify->update != NULL)
		__free_skip_array(session, page->modify->update, page->entries);
}
Esempio n. 5
0
/*
 * __free_page_modify --
 *	Discard the page's associated modification structures.
 */
static void
__free_page_modify(WT_SESSION_IMPL *session, WT_PAGE *page)
{
	WT_INSERT_HEAD *append;
	WT_MULTI *multi;
	WT_PAGE_MODIFY *mod;
	uint32_t i;
	bool update_ignore;

	mod = page->modify;

	/* In some failed-split cases, we can't discard updates. */
	update_ignore = F_ISSET_ATOMIC(page, WT_PAGE_UPDATE_IGNORE);

	switch (mod->rec_result) {
	case WT_PM_REC_MULTIBLOCK:
		/* Free list of replacement blocks. */
		for (multi = mod->mod_multi,
		    i = 0; i < mod->mod_multi_entries; ++multi, ++i) {
			switch (page->type) {
			case WT_PAGE_ROW_INT:
			case WT_PAGE_ROW_LEAF:
				__wt_free(session, multi->key.ikey);
				break;
			}
			__wt_free(session, multi->supd);
			__wt_free(session, multi->disk_image);
			__wt_free(session, multi->addr.addr);
		}
		__wt_free(session, mod->mod_multi);
		break;
	case WT_PM_REC_REPLACE:
		/*
		 * Discard any replacement address: this memory is usually moved
		 * into the parent's WT_REF, but at the root that can't happen.
		 */
		__wt_free(session, mod->mod_replace.addr);
		break;
	}

	switch (page->type) {
	case WT_PAGE_COL_FIX:
	case WT_PAGE_COL_VAR:
		/* Free the append array. */
		if ((append = WT_COL_APPEND(page)) != NULL) {
			__free_skip_list(
			    session, WT_SKIP_FIRST(append), update_ignore);
			__wt_free(session, append);
			__wt_free(session, mod->mod_append);
		}

		/* Free the insert/update array. */
		if (mod->mod_update != NULL)
			__free_skip_array(session, mod->mod_update,
			    page->type ==
			    WT_PAGE_COL_FIX ? 1 : page->pg_var_entries,
			    update_ignore);
		break;
	}

	/* Free the overflow on-page, reuse and transaction-cache skiplists. */
	__wt_ovfl_reuse_free(session, page);
	__wt_ovfl_txnc_free(session, page);
	__wt_ovfl_discard_free(session, page);

	__wt_free(session, page->modify->ovfl_track);

	__wt_free(session, page->modify);
}