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36 * $FreeBSD: src/lib/libc/db/btree/bt_close.c,v 1.5 2000/01/27 23:06:05 jasone Exp $
37 * $DragonFly: src/lib/libc/db/btree/bt_close.c,v 1.2 2003/06/17 04:26:41 dillon Exp $
39 * @(#)bt_close.c 8.7 (Berkeley) 8/17/94
42 #include <sys/param.h>
53 static int bt_meta __P((BTREE *));
56 * BT_CLOSE -- Close a btree.
59 * dbp: pointer to access method
62 * RET_ERROR, RET_SUCCESS
73 /* Toss any page pinned across calls. */
74 if (t->bt_pinned != NULL) {
75 mpool_put(t->bt_mp, t->bt_pinned, 0);
80 if (__bt_sync(dbp, 0) == RET_ERROR)
83 /* Close the memory pool. */
84 if (mpool_close(t->bt_mp) == RET_ERROR)
87 /* Free random memory. */
88 if (t->bt_cursor.key.data != NULL) {
89 free(t->bt_cursor.key.data);
90 t->bt_cursor.key.size = 0;
91 t->bt_cursor.key.data = NULL;
93 if (t->bt_rkey.data) {
94 free(t->bt_rkey.data);
96 t->bt_rkey.data = NULL;
98 if (t->bt_rdata.data) {
99 free(t->bt_rdata.data);
100 t->bt_rdata.size = 0;
101 t->bt_rdata.data = NULL;
107 return (_close(fd) ? RET_ERROR : RET_SUCCESS);
111 * BT_SYNC -- sync the btree to disk.
114 * dbp: pointer to access method
117 * RET_SUCCESS, RET_ERROR.
120 __bt_sync(dbp, flags)
129 /* Toss any page pinned across calls. */
130 if (t->bt_pinned != NULL) {
131 mpool_put(t->bt_mp, t->bt_pinned, 0);
135 /* Sync doesn't currently take any flags. */
141 if (F_ISSET(t, B_INMEM | B_RDONLY) || !F_ISSET(t, B_MODIFIED))
142 return (RET_SUCCESS);
144 if (F_ISSET(t, B_METADIRTY) && bt_meta(t) == RET_ERROR)
147 if ((status = mpool_sync(t->bt_mp)) == RET_SUCCESS)
148 F_CLR(t, B_MODIFIED);
154 * BT_META -- write the tree meta data to disk.
160 * RET_ERROR, RET_SUCCESS
169 if ((p = mpool_get(t->bt_mp, P_META, 0)) == NULL)
172 /* Fill in metadata. */
173 m.magic = BTREEMAGIC;
174 m.version = BTREEVERSION;
175 m.psize = t->bt_psize;
177 m.nrecs = t->bt_nrecs;
178 m.flags = F_ISSET(t, SAVEMETA);
180 memmove(p, &m, sizeof(BTMETA));
181 mpool_put(t->bt_mp, p, MPOOL_DIRTY);
182 return (RET_SUCCESS);