#define MDB_MAGIC 0xBEEFC0DE
#define MDB_VERSION 1
#define MAXKEYSIZE 511
+#if DEBUG
+#define KBUF (MAXKEYSIZE*2+1)
+#define DKBUF char kbuf[KBUF]
+#define DKEY(x) mdb_dkey(x, kbuf)
+#else
+#define DKBUF
+#define DKEY(x)
+#endif
#define P_INVALID (~0UL)
indx_t pb_upper; /* upper bound of free space */
} pb;
uint32_t pb_pages; /* number of overflow pages */
- struct {
- indx_t pb_ksize; /* on a LEAF2 page */
- indx_t pb_numkeys;
- } pb2;
} mp_pb;
indx_t mp_ptrs[1]; /* dynamic size */
} MDB_page;
#define PAGEFILL(env, p) (1000L * ((env)->me_psize - PAGEHDRSZ - SIZELEFT(p)) / \
((env)->me_psize - PAGEHDRSZ))
#define IS_LEAF(p) F_ISSET((p)->mp_flags, P_LEAF)
+#define IS_LEAF2(p) F_ISSET((p)->mp_flags, P_LEAF2)
#define IS_BRANCH(p) F_ISSET((p)->mp_flags, P_BRANCH)
#define IS_OVERFLOW(p) F_ISSET((p)->mp_flags, P_OVERFLOW)
#define OVPAGES(size, psize) ((PAGEHDRSZ-1 + (size)) / (psize) + 1)
typedef struct MDB_db {
- uint32_t md_pad;
+ uint32_t md_pad; /* also ksize for LEAF2 pages */
uint16_t md_flags;
uint16_t md_depth;
ULONG md_branch_pages;
#define NODEDATA(node) (void *)((char *)(node)->mn_data + (node)->mn_ksize)
#define NODEPGNO(node) ((node)->mn_pgno)
#define NODEDSZ(node) ((node)->mn_dsize)
+#define NODEKSZ(node) ((node)->mn_ksize)
+#define LEAF2KEY(p, i, ks) ((char *)(p) + PAGEHDRSZ + ((i)*(ks)))
+
+#define MDB_SET_KEY(node, key) if (key!=NULL) {(key)->mv_size = NODEKSZ(node); (key)->mv_data = NODEKEY(node);}
#define MDB_COMMIT_PAGES 64 /* max number of pages to write in one commit */
static int mdb_add_node(MDB_txn *txn, MDB_dbi dbi, MDB_page *mp,
indx_t indx, MDB_val *key, MDB_val *data,
pgno_t pgno, uint8_t flags);
-static void mdb_del_node(MDB_page *mp, indx_t indx);
+static void mdb_del_node(MDB_page *mp, indx_t indx, int ksize);
static int mdb_del0(MDB_txn *txn, MDB_dbi dbi, unsigned int ki,
MDB_pageparent *mpp, MDB_node *leaf);
static int mdb_put0(MDB_txn *txn, MDB_dbi dbi,
static MDB_ppage *cursor_push_page(MDB_cursor *cursor,
MDB_page *mp);
-static int mdb_set_key(MDB_node *node, MDB_val *key);
static int mdb_sibling(MDB_cursor *cursor, int move_right);
static int mdb_cursor_next(MDB_cursor *cursor,
MDB_val *key, MDB_val *data, MDB_cursor_op op);
return strerror(err);
}
+static char *
+mdb_dkey(MDB_val *key, char *buf)
+{
+ char *ptr = buf;
+ unsigned char *c = key->mv_data;
+ unsigned int i;
+ if (key->mv_size > MAXKEYSIZE)
+ return "MAXKEYSIZE";
+ for (i=0; i<key->mv_size; i++)
+ ptr += sprintf(ptr, "%02x", *c++);
+ return buf;
+}
+
int
mdb_cmp(MDB_txn *txn, MDB_dbi dbi, const MDB_val *a, const MDB_val *b)
{
if (txn->mt_dbxs[dbi].md_dcmp)
return txn->mt_dbxs[dbi].md_dcmp(a, b);
- return memncmp((char *)a->mv_data, a->mv_size, b->mv_data, b->mv_size);
+ if (txn->mt_dbs[dbi].md_flags & (0
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+ |MDB_INTEGERDUP
+#endif
+ ))
+ return memnrcmp(a->mv_data, a->mv_size, b->mv_data, b->mv_size);
+ else
+ return memncmp((char *)a->mv_data, a->mv_size, b->mv_data, b->mv_size);
}
/* Allocate new page(s) for writing */
/* Write to the SYNC fd */
rc = pwrite(env->me_mfd, ptr, len, off);
if (rc != len) {
+ int r2;
+ rc = errno;
DPUTS("write failed, disk error?");
/* On a failure, the pagecache still contains the new data.
* Write some old data back, to prevent it from being used.
*/
meta.mm_last_pg = metab.mm_last_pg;
meta.mm_txnid = metab.mm_txnid;
- rc = pwrite(env->me_fd, ptr, len, off);
+ r2 = pwrite(env->me_fd, ptr, len, off);
env->me_flags |= MDB_FATAL_ERROR;
- return errno;
+ return rc;
}
txn->mt_env->me_txns->mti_me_toggle = toggle;
unsigned int i = 0;
int low, high;
int rc = 0;
- MDB_node *node;
+ MDB_node *node = NULL;
MDB_val nodekey;
+ DKBUF;
DPRINTF("searching %u keys in %s page %lu",
NUMKEYS(mp),
high = NUMKEYS(mp) - 1;
while (low <= high) {
i = (low + high) >> 1;
- node = NODEPTR(mp, i);
- nodekey.mv_size = node->mn_ksize;
- nodekey.mv_data = NODEKEY(node);
+ if (IS_LEAF2(mp)) {
+ nodekey.mv_size = txn->mt_dbs[dbi].md_pad;
+ nodekey.mv_data = LEAF2KEY(mp, i, nodekey.mv_size);
+ } else {
+ node = NODEPTR(mp, i);
+
+ nodekey.mv_size = node->mn_ksize;
+ nodekey.mv_data = NODEKEY(node);
+ }
rc = mdb_cmp(txn, dbi, key, &nodekey);
if (IS_LEAF(mp))
- DPRINTF("found leaf index %u [%.*s], rc = %i",
- i, (int)nodekey.mv_size, (char *)nodekey.mv_data, rc);
+ DPRINTF("found leaf index %u [%s], rc = %i",
+ i, DKEY(&nodekey), rc);
else
- DPRINTF("found branch index %u [%.*s -> %lu], rc = %i",
- i, (int)node->mn_ksize, (char *)NODEKEY(node),
- node->mn_pgno, rc);
+ DPRINTF("found branch index %u [%s -> %lu], rc = %i",
+ i, DKEY(&nodekey), NODEPGNO(node), rc);
if (rc == 0)
break;
if (kip) /* Store the key index if requested. */
*kip = i;
- return NODEPTR(mp, i);
+ /* nodeptr is fake for LEAF2 */
+ return IS_LEAF2(mp) ? NODEPTR(mp, 0) : NODEPTR(mp, i);
}
static void
top = CURSOR_TOP(cursor);
cursor->mc_snum--;
- DPRINTF("popped page %lu off cursor %p", top->mp_page->mp_pgno, (void *) cursor);
+ DPRINTF("popped page %lu off db %u cursor %p", top->mp_page->mp_pgno,
+ cursor->mc_dbi, (void *) cursor);
}
}
{
MDB_ppage *ppage;
- DPRINTF("pushing page %lu on cursor %p", mp->mp_pgno, (void *) cursor);
+ DPRINTF("pushing page %lu on db %u cursor %p", mp->mp_pgno,
+ cursor->mc_dbi, (void *) cursor);
ppage = &cursor->mc_stack[cursor->mc_snum++];
ppage->mp_page = mp;
MDB_cursor *cursor, int modify, MDB_pageparent *mpp)
{
MDB_page *mp = mpp->mp_page;
+ DKBUF;
int rc;
if (cursor && cursor_push_page(cursor, mp) == NULL)
}
if (key)
- DPRINTF("following index %u for key %.*s",
- i, (int)key->mv_size, (char *)key->mv_data);
+ DPRINTF("following index %u for key [%s]",
+ i, DKEY(key));
assert(i < NUMKEYS(mp));
node = NODEPTR(mp, i);
return MDB_CORRUPTED;
}
- DPRINTF("found leaf page %lu for key %.*s", mp->mp_pgno,
- key ? (int)key->mv_size : 0, key ? (char *)key->mv_data : NULL);
+ DPRINTF("found leaf page %lu for key [%s]", mp->mp_pgno,
+ key ? DKEY(key) : NULL);
return MDB_SUCCESS;
}
int rc, exact;
MDB_node *leaf;
MDB_pageparent mpp;
+ DKBUF;
assert(key);
assert(data);
- DPRINTF("===> get key [%.*s]", (int)key->mv_size, (char *)key->mv_data);
+ DPRINTF("===> get db %u key [%s]", dbi, DKEY(key));
if (txn == NULL || !dbi || dbi >= txn->mt_numdbs)
return EINVAL;
rc = mdb_search_page(&mx.mx_txn, mx.mx_cursor.mc_dbi, NULL, NULL, 0, &mpp);
if (rc != MDB_SUCCESS)
return rc;
- leaf = NODEPTR(mpp.mp_page, 0);
+ if (IS_LEAF2(mpp.mp_page)) {
+ data->mv_size = txn->mt_dbs[dbi].md_pad;
+ data->mv_data = LEAF2KEY(mpp.mp_page, 0, data->mv_size);
+ } else {
+ leaf = NODEPTR(mpp.mp_page, 0);
+ data->mv_size = NODEKSZ(leaf);
+ data->mv_data = NODEKEY(leaf);
+ }
+ } else {
+ rc = mdb_read_data(txn, leaf, data);
}
- rc = mdb_read_data(txn, leaf, data);
} else {
rc = MDB_NOTFOUND;
}
assert(IS_BRANCH(parent->mp_page));
indx = NODEPTR(parent->mp_page, parent->mp_ki);
- if ((mp = mdb_get_page(cursor->mc_txn, indx->mn_pgno)) == NULL)
+ if ((mp = mdb_get_page(cursor->mc_txn, NODEPGNO(indx))) == NULL)
return MDB_PAGE_NOTFOUND;
#if 0
mp->parent = parent->mp_page;
return MDB_SUCCESS;
}
-static int
-mdb_set_key(MDB_node *node, MDB_val *key)
-{
- if (key == NULL)
- return 0;
-
- key->mv_size = node->mn_ksize;
- key->mv_data = NODEKEY(node);
-
- return 0;
-}
-
static int
mdb_cursor_next(MDB_cursor *cursor, MDB_val *key, MDB_val *data, MDB_cursor_op op)
{
if (cursor->mc_txn->mt_dbs[cursor->mc_dbi].md_flags & MDB_DUPSORT) {
leaf = NODEPTR(mp, top->mp_ki);
- if ((op == MDB_NEXT || op == MDB_NEXT_DUP) && F_ISSET(leaf->mn_flags, F_DUPDATA)) {
- rc = mdb_cursor_next(&cursor->mc_xcursor->mx_cursor, data, NULL, MDB_NEXT);
- if (op != MDB_NEXT || rc == MDB_SUCCESS)
- return rc;
+ if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
+ if (op == MDB_NEXT || op == MDB_NEXT_DUP) {
+ rc = mdb_cursor_next(&cursor->mc_xcursor->mx_cursor, data, NULL, MDB_NEXT);
+ if (op != MDB_NEXT || rc == MDB_SUCCESS)
+ return rc;
+ }
+ } else {
+ cursor->mc_xcursor->mx_cursor.mc_initialized = 0;
+ if (op == MDB_NEXT_DUP)
+ return MDB_NOTFOUND;
}
}
DPRINTF("==> cursor points to page %lu with %u keys, key index %u",
mp->mp_pgno, NUMKEYS(mp), top->mp_ki);
+ if (IS_LEAF2(mp)) {
+ key->mv_size = cursor->mc_txn->mt_dbs[cursor->mc_dbi].md_pad;
+ key->mv_data = LEAF2KEY(mp, top->mp_ki, key->mv_size);
+ return MDB_SUCCESS;
+ }
+
assert(IS_LEAF(mp));
leaf = NODEPTR(mp, top->mp_ki);
}
}
- return mdb_set_key(leaf, key);
+ MDB_SET_KEY(leaf, key);
+ return MDB_SUCCESS;
}
static int
if (cursor->mc_txn->mt_dbs[cursor->mc_dbi].md_flags & MDB_DUPSORT) {
leaf = NODEPTR(mp, top->mp_ki);
- if ((op == MDB_PREV || op == MDB_PREV_DUP) && F_ISSET(leaf->mn_flags, F_DUPDATA)) {
- rc = mdb_cursor_prev(&cursor->mc_xcursor->mx_cursor, data, NULL, MDB_PREV);
- if (op != MDB_PREV || rc == MDB_SUCCESS)
- return rc;
+ if (op == MDB_PREV || op == MDB_PREV_DUP) {
+ if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
+ rc = mdb_cursor_prev(&cursor->mc_xcursor->mx_cursor, data, NULL, MDB_PREV);
+ if (op != MDB_PREV || rc == MDB_SUCCESS)
+ return rc;
+ } else {
+ cursor->mc_xcursor->mx_cursor.mc_initialized = 0;
+ if (op == MDB_PREV_DUP)
+ return MDB_NOTFOUND;
+ }
}
}
if (top->mp_ki == 0) {
DPUTS("=====> move to prev sibling page");
if (mdb_sibling(cursor, 0) != MDB_SUCCESS) {
+ cursor->mc_initialized = 0;
return MDB_NOTFOUND;
}
top = CURSOR_TOP(cursor);
DPRINTF("==> cursor points to page %lu with %u keys, key index %u",
mp->mp_pgno, NUMKEYS(mp), top->mp_ki);
+ if (IS_LEAF2(mp)) {
+ key->mv_size = cursor->mc_txn->mt_dbs[cursor->mc_dbi].md_pad;
+ key->mv_data = LEAF2KEY(mp, top->mp_ki, key->mv_size);
+ return MDB_SUCCESS;
+ }
+
assert(IS_LEAF(mp));
leaf = NODEPTR(mp, top->mp_ki);
}
}
- return mdb_set_key(leaf, key);
+ MDB_SET_KEY(leaf, key);
+ return MDB_SUCCESS;
}
static int
MDB_node *leaf;
MDB_ppage *top;
MDB_pageparent mpp;
+ DKBUF;
assert(cursor);
assert(key);
assert(key->mv_size > 0);
+ /* See if we're already on the right page */
+ if (cursor->mc_initialized) {
+ MDB_val nodekey;
+ top = CURSOR_TOP(cursor);
+ /* Don't try this for LEAF2 pages. Maybe support that later. */
+ if ((top->mp_page->mp_flags & (P_LEAF|P_LEAF2)) == P_LEAF) {
+ leaf = NODEPTR(top->mp_page, 0);
+ MDB_SET_KEY(leaf, &nodekey);
+ rc = mdb_cmp(cursor->mc_txn, cursor->mc_dbi, key, &nodekey);
+ if (rc >= 0) {
+ leaf = NODEPTR(top->mp_page, NUMKEYS(top->mp_page)-1);
+ MDB_SET_KEY(leaf, &nodekey);
+ rc = mdb_cmp(cursor->mc_txn, cursor->mc_dbi, key, &nodekey);
+ if (rc <= 0) {
+ /* we're already on the right page */
+ mpp.mp_page = top->mp_page;
+ rc = 0;
+ goto set2;
+ }
+ }
+ }
+ }
cursor->mc_snum = 0;
rc = mdb_search_page(cursor->mc_txn, cursor->mc_dbi, key, cursor, 0, &mpp);
if (rc != MDB_SUCCESS)
return rc;
+
assert(IS_LEAF(mpp.mp_page));
top = CURSOR_TOP(cursor);
+set2:
leaf = mdb_search_node(cursor->mc_txn, cursor->mc_dbi, mpp.mp_page, key, exactp, &top->mp_ki);
if (exactp != NULL && !*exactp) {
/* MDB_SET specified and not an exact match. */
cursor->mc_initialized = 1;
cursor->mc_eof = 0;
+ if (IS_LEAF2(mpp.mp_page)) {
+ key->mv_size = cursor->mc_txn->mt_dbs[cursor->mc_dbi].md_pad;
+ key->mv_data = LEAF2KEY(mpp.mp_page, top->mp_ki, key->mv_size);
+ return MDB_SUCCESS;
+ }
+
if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
mdb_xcursor_init1(cursor->mc_txn, cursor->mc_dbi, cursor->mc_xcursor, leaf);
}
rc = mdb_cursor_first(&cursor->mc_xcursor->mx_cursor, data, NULL);
} else {
int ex2, *ex2p;
- MDB_cursor_op op2;
if (op == MDB_GET_BOTH) {
ex2p = &ex2;
- op2 = MDB_SET;
} else {
ex2p = NULL;
- op2 = MDB_SET_RANGE;
}
- rc = mdb_cursor_set(&cursor->mc_xcursor->mx_cursor, data, NULL, op2, ex2p);
+ rc = mdb_cursor_set(&cursor->mc_xcursor->mx_cursor, data, NULL, MDB_SET_RANGE, ex2p);
if (rc != MDB_SUCCESS)
return rc;
}
}
}
- rc = mdb_set_key(leaf, key);
- if (rc == MDB_SUCCESS) {
- DPRINTF("==> cursor placed on key %.*s",
- (int)key->mv_size, (char *)key->mv_data);
- ;
- }
+ /* The key already matches in all other cases */
+ if (op == MDB_SET_RANGE)
+ MDB_SET_KEY(leaf, key);
+ DPRINTF("==> cursor placed on key [%s]", DKEY(key));
return rc;
}
cursor->mc_initialized = 1;
cursor->mc_eof = 0;
+ if (IS_LEAF2(mpp.mp_page)) {
+ key->mv_size = cursor->mc_txn->mt_dbs[cursor->mc_dbi].md_pad;
+ key->mv_data = LEAF2KEY(mpp.mp_page, 0, key->mv_size);
+ return MDB_SUCCESS;
+ }
+
if (data) {
if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
mdb_xcursor_init1(cursor->mc_txn, cursor->mc_dbi, cursor->mc_xcursor, leaf);
if (rc)
return rc;
} else {
+ if (cursor->mc_xcursor)
+ cursor->mc_xcursor->mx_cursor.mc_initialized = 0;
if ((rc = mdb_read_data(cursor->mc_txn, leaf, data)) != MDB_SUCCESS)
return rc;
}
}
- return mdb_set_key(leaf, key);
+ MDB_SET_KEY(leaf, key);
+ return MDB_SUCCESS;
}
static int
top = CURSOR_TOP(cursor);
top->mp_ki = NUMKEYS(top->mp_page) - 1;
+ if (IS_LEAF2(mpp.mp_page)) {
+ key->mv_size = cursor->mc_txn->mt_dbs[cursor->mc_dbi].md_pad;
+ key->mv_data = LEAF2KEY(mpp.mp_page, top->mp_ki, key->mv_size);
+ return MDB_SUCCESS;
+ }
+
if (data) {
if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
mdb_xcursor_init1(cursor->mc_txn, cursor->mc_dbi, cursor->mc_xcursor, leaf);
}
}
- return mdb_set_key(leaf, key);
+ MDB_SET_KEY(leaf, key);
+ return MDB_SUCCESS;
}
int
else
rc = mdb_cursor_set(cursor, key, data, op, &exact);
break;
+ case MDB_GET_MULTIPLE:
+ if (data == NULL ||
+ !(cursor->mc_txn->mt_dbs[cursor->mc_dbi].md_flags & MDB_DUPFIXED) ||
+ !cursor->mc_initialized) {
+ rc = EINVAL;
+ break;
+ }
+ rc = MDB_SUCCESS;
+ if (!cursor->mc_xcursor->mx_cursor.mc_initialized || cursor->mc_xcursor->mx_cursor.mc_eof)
+ break;
+ goto fetchm;
+ case MDB_NEXT_MULTIPLE:
+ if (data == NULL ||
+ !(cursor->mc_txn->mt_dbs[cursor->mc_dbi].md_flags & MDB_DUPFIXED)) {
+ rc = EINVAL;
+ break;
+ }
+ if (!cursor->mc_initialized)
+ rc = mdb_cursor_first(cursor, key, data);
+ else
+ rc = mdb_cursor_next(cursor, key, data, MDB_NEXT_DUP);
+ if (rc == MDB_SUCCESS) {
+ if (cursor->mc_xcursor->mx_cursor.mc_initialized) {
+ MDB_ppage *top;
+fetchm:
+ top = CURSOR_TOP(&cursor->mc_xcursor->mx_cursor);
+ data->mv_size = NUMKEYS(top->mp_page) *
+ cursor->mc_xcursor->mx_txn.mt_dbs[cursor->mc_xcursor->mx_cursor.mc_dbi].md_pad;
+ data->mv_data = METADATA(top->mp_page);
+ top->mp_ki = NUMKEYS(top->mp_page)-1;
+ } else {
+ rc = MDB_NOTFOUND;
+ }
+ }
+ break;
case MDB_NEXT:
case MDB_NEXT_DUP:
case MDB_NEXT_NODUP:
indx_t ofs;
MDB_node *node;
MDB_dpage *ofp = NULL; /* overflow page */
+ DKBUF;
assert(mp->mp_upper >= mp->mp_lower);
- DPRINTF("add node [%.*s] to %s page %lu at index %i, key size %zu",
- key ? (int)key->mv_size : 0, key ? (char *)key->mv_data : NULL,
+ DPRINTF("add node [%s] to %s page %lu at index %i, key size %zu",
+ key ? DKEY(key) : NULL,
IS_LEAF(mp) ? "leaf" : "branch",
mp->mp_pgno, indx, key ? key->mv_size : 0);
+ if (IS_LEAF2(mp)) {
+ /* Move higher keys up one slot. */
+ int ksize = txn->mt_dbs[dbi].md_pad, dif;
+ char *ptr = LEAF2KEY(mp, indx, ksize);
+ dif = NUMKEYS(mp) - indx;
+ if (dif > 0)
+ memmove(ptr+ksize, ptr, dif*ksize);
+ /* insert new key */
+ memcpy(ptr, key->mv_data, ksize);
+
+ /* Just using these for counting */
+ mp->mp_lower += sizeof(indx_t);
+ mp->mp_upper -= ksize - sizeof(indx_t);
+ return MDB_SUCCESS;
+ }
+
if (key != NULL)
node_size += key->mv_size;
if (IS_LEAF(mp))
node->mn_dsize = data->mv_size;
else
- node->mn_pgno = pgno;
+ NODEPGNO(node) = pgno;
if (key)
memcpy(NODEKEY(node), key->mv_data, key->mv_size);
}
static void
-mdb_del_node(MDB_page *mp, indx_t indx)
+mdb_del_node(MDB_page *mp, indx_t indx, int ksize)
{
unsigned int sz;
indx_t i, j, numkeys, ptr;
IS_LEAF(mp) ? "leaf" : "branch", mp->mp_pgno);
assert(indx < NUMKEYS(mp));
+ if (IS_LEAF2(mp)) {
+ int x = NUMKEYS(mp) - 1 - indx;
+ base = LEAF2KEY(mp, indx, ksize);
+ if (x)
+ memmove(base, base + ksize, x * ksize);
+ mp->mp_lower -= sizeof(indx_t);
+ mp->mp_upper += ksize - sizeof(indx_t);
+ return;
+ }
+
node = NODEPTR(mp, indx);
sz = NODESIZE + node->mn_ksize;
if (IS_LEAF(mp)) {
mx->mx_txn.mt_next_pgno = txn->mt_next_pgno;
mx->mx_txn.mt_oldest = txn->mt_oldest;
mx->mx_txn.mt_u = txn->mt_u;
+ mx->mx_cursor.mc_initialized = 0;
+ mx->mx_cursor.mc_eof = 0;
}
static void
size_t len;
MDB_node *node;
char *base;
+ DKBUF;
node = NODEPTR(mp, indx);
ptr = mp->mp_ptrs[indx];
- DPRINTF("update key %u (ofs %u) [%.*s] to [%.*s] on page %lu",
+ DPRINTF("update key %u (ofs %u) [%.*s] to [%s] on page %lu",
indx, ptr,
(int)node->mn_ksize, (char *)NODEKEY(node),
- (int)key->mv_size, (char *)key->mv_data,
+ DKEY(key),
mp->mp_pgno);
delta = key->mv_size - node->mn_ksize;
int rc;
MDB_node *srcnode;
MDB_val key, data;
-
- srcnode = NODEPTR(src->mp_page, srcindx);
- DPRINTF("moving %s node %u [%.*s] on page %lu to node %u on page %lu",
- IS_LEAF(src->mp_page) ? "leaf" : "branch",
- srcindx,
- (int)srcnode->mn_ksize, (char *)NODEKEY(srcnode),
- src->mp_page->mp_pgno,
- dstindx, dst->mp_page->mp_pgno);
+ DKBUF;
/* Mark src and dst as dirty. */
if ((rc = mdb_touch(txn, src)) ||
(rc = mdb_touch(txn, dst)))
return rc;;
+ if (IS_LEAF2(src->mp_page)) {
+ srcnode = NODEPTR(src->mp_page, 0); /* fake */
+ key.mv_size = txn->mt_dbs[dbi].md_pad;
+ key.mv_data = LEAF2KEY(src->mp_page, srcindx, key.mv_size);
+ data.mv_size = 0;
+ data.mv_data = NULL;
+ } else {
+ srcnode = NODEPTR(src->mp_page, srcindx);
+ key.mv_size = NODEKSZ(srcnode);
+ key.mv_data = NODEKEY(srcnode);
+ data.mv_size = NODEDSZ(srcnode);
+ data.mv_data = NODEDATA(srcnode);
+ }
+ DPRINTF("moving %s node %u [%s] on page %lu to node %u on page %lu",
+ IS_LEAF(src->mp_page) ? "leaf" : "branch",
+ srcindx,
+ DKEY(&key),
+ src->mp_page->mp_pgno,
+ dstindx, dst->mp_page->mp_pgno);
+
/* Add the node to the destination page.
*/
- key.mv_size = srcnode->mn_ksize;
- key.mv_data = NODEKEY(srcnode);
- data.mv_size = NODEDSZ(srcnode);
- data.mv_data = NODEDATA(srcnode);
rc = mdb_add_node(txn, dbi, dst->mp_page, dstindx, &key, &data, NODEPGNO(srcnode),
srcnode->mn_flags);
if (rc != MDB_SUCCESS)
/* Delete the node from the source page.
*/
- mdb_del_node(src->mp_page, srcindx);
+ mdb_del_node(src->mp_page, srcindx, key.mv_size);
- /* Update the parent separators.
+ /* The key value just changed due to del_node, find it again.
*/
- if (srcindx == 0 && src->mp_pi != 0) {
- DPRINTF("update separator for source page %lu to [%.*s]",
- src->mp_page->mp_pgno, (int)key.mv_size, (char *)key.mv_data);
- if ((rc = mdb_update_key(src->mp_parent, src->mp_pi,
- &key)) != MDB_SUCCESS)
- return rc;
- }
-
- if (srcindx == 0 && IS_BRANCH(src->mp_page)) {
- MDB_val nullkey;
- nullkey.mv_size = 0;
- assert(mdb_update_key(src->mp_page, 0, &nullkey) == MDB_SUCCESS);
+ if (!IS_LEAF2(src->mp_page)) {
+ srcnode = NODEPTR(src->mp_page, srcindx);
+ key.mv_data = NODEKEY(srcnode);
}
- if (dstindx == 0 && dst->mp_pi != 0) {
- DPRINTF("update separator for destination page %lu to [%.*s]",
- dst->mp_page->mp_pgno, (int)key.mv_size, (char *)key.mv_data);
- if ((rc = mdb_update_key(dst->mp_parent, dst->mp_pi,
- &key)) != MDB_SUCCESS)
- return rc;
+ /* Update the parent separators.
+ */
+ if (srcindx == 0) {
+ if (src->mp_pi != 0) {
+ DPRINTF("update separator for source page %lu to [%s]",
+ src->mp_page->mp_pgno, DKEY(&key));
+ if ((rc = mdb_update_key(src->mp_parent, src->mp_pi,
+ &key)) != MDB_SUCCESS)
+ return rc;
+ }
+ if (IS_BRANCH(src->mp_page)) {
+ MDB_val nullkey;
+ nullkey.mv_size = 0;
+ assert(mdb_update_key(src->mp_page, 0, &nullkey) == MDB_SUCCESS);
+ }
}
- if (dstindx == 0 && IS_BRANCH(dst->mp_page)) {
- MDB_val nullkey;
- nullkey.mv_size = 0;
- assert(mdb_update_key(dst->mp_page, 0, &nullkey) == MDB_SUCCESS);
+ if (dstindx == 0) {
+ if (dst->mp_pi != 0) {
+ DPRINTF("update separator for destination page %lu to [%s]",
+ dst->mp_page->mp_pgno, DKEY(&key));
+ if ((rc = mdb_update_key(dst->mp_parent, dst->mp_pi,
+ &key)) != MDB_SUCCESS)
+ return rc;
+ }
+ if (IS_BRANCH(dst->mp_page)) {
+ MDB_val nullkey;
+ nullkey.mv_size = 0;
+ assert(mdb_update_key(dst->mp_page, 0, &nullkey) == MDB_SUCCESS);
+ }
}
return MDB_SUCCESS;
/* Move all nodes from src to dst.
*/
- for (i = 0; i < NUMKEYS(src->mp_page); i++) {
- srcnode = NODEPTR(src->mp_page, i);
-
- key.mv_size = srcnode->mn_ksize;
- key.mv_data = NODEKEY(srcnode);
- data.mv_size = NODEDSZ(srcnode);
- data.mv_data = NODEDATA(srcnode);
- rc = mdb_add_node(txn, dbi, dst->mp_page, NUMKEYS(dst->mp_page), &key,
- &data, NODEPGNO(srcnode), srcnode->mn_flags);
- if (rc != MDB_SUCCESS)
- return rc;
+ if (IS_LEAF2(src->mp_page)) {
+ key.mv_size = txn->mt_dbs[dbi].md_pad;
+ key.mv_data = METADATA(src->mp_page);
+ for (i = 0; i < NUMKEYS(src->mp_page); i++) {
+ rc = mdb_add_node(txn, dbi, dst->mp_page, NUMKEYS(dst->mp_page), &key,
+ NULL, 0, 0);
+ if (rc != MDB_SUCCESS)
+ return rc;
+ key.mv_data = (char *)key.mv_data + key.mv_size;
+ }
+ } else {
+ for (i = 0; i < NUMKEYS(src->mp_page); i++) {
+ srcnode = NODEPTR(src->mp_page, i);
+
+ key.mv_size = srcnode->mn_ksize;
+ key.mv_data = NODEKEY(srcnode);
+ data.mv_size = NODEDSZ(srcnode);
+ data.mv_data = NODEDATA(srcnode);
+ rc = mdb_add_node(txn, dbi, dst->mp_page, NUMKEYS(dst->mp_page), &key,
+ &data, NODEPGNO(srcnode), srcnode->mn_flags);
+ if (rc != MDB_SUCCESS)
+ return rc;
+ }
}
DPRINTF("dst page %lu now has %u keys (%.1f%% filled)",
/* Unlink the src page from parent.
*/
- mdb_del_node(src->mp_parent, src->mp_pi);
+ mdb_del_node(src->mp_parent, src->mp_pi, 0);
if (src->mp_pi == 0) {
key.mv_size = 0;
if ((rc = mdb_update_key(src->mp_parent, 0, &key)) != MDB_SUCCESS)
if (NUMKEYS(mpp->mp_page) == 0) {
DPUTS("tree is completely empty");
txn->mt_dbs[dbi].md_root = P_INVALID;
- txn->mt_dbs[dbi].md_depth--;
- txn->mt_dbs[dbi].md_leaf_pages--;
+ txn->mt_dbs[dbi].md_depth = 0;
+ txn->mt_dbs[dbi].md_leaf_pages = 0;
} else if (IS_BRANCH(mpp->mp_page) && NUMKEYS(mpp->mp_page) == 1) {
DPUTS("collapsing root page!");
txn->mt_dbs[dbi].md_root = NODEPGNO(NODEPTR(mpp->mp_page, 0));
int rc;
/* add overflow pages to free list */
- if (F_ISSET(leaf->mn_flags, F_BIGDATA)) {
+ if (!IS_LEAF2(mpp->mp_page) && F_ISSET(leaf->mn_flags, F_BIGDATA)) {
int i, ovpages;
pgno_t pg;
pg++;
}
}
- mdb_del_node(mpp->mp_page, ki);
+ mdb_del_node(mpp->mp_page, ki, txn->mt_dbs[dbi].md_pad);
txn->mt_dbs[dbi].md_entries--;
rc = mdb_rebalance(txn, dbi, mpp);
if (rc != MDB_SUCCESS)
unsigned int ki;
MDB_node *leaf;
MDB_pageparent mpp;
-
- DPRINTF("========> delete key %.*s", (int)key->mv_size, (char *)key->mv_data);
+ DKBUF;
assert(key != NULL);
+ DPRINTF("====> delete db %u key [%s]", dbi, DKEY(key));
+
if (txn == NULL || !dbi || dbi >= txn->mt_numdbs)
return EINVAL;
return MDB_NOTFOUND;
}
- if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
+ if (!IS_LEAF2(mpp.mp_page) && F_ISSET(leaf->mn_flags, F_DUPDATA)) {
MDB_xcursor mx;
MDB_pageparent mp2;
parent = CURSOR_PARENT(&mx.mx_cursor);
for (i=0; i<NUMKEYS(top->mp_page); i++) {
ni = NODEPTR(top->mp_page, i);
- mdb_midl_insert(txn->mt_free_pgs, ni->mn_pgno);
+ mdb_midl_insert(txn->mt_free_pgs, NODEPGNO(ni));
}
parent->mp_ki++;
if (parent->mp_ki >= NUMKEYS(parent->mp_page)) {
top = parent;
} else {
ni = NODEPTR(parent->mp_page, parent->mp_ki);
- top->mp_page = mdb_get_page(&mx.mx_txn, ni->mn_pgno);
+ top->mp_page = mdb_get_page(&mx.mx_txn, NODEPGNO(ni));
}
}
}
MDB_page *copy;
MDB_dpage *mdp, *rdp, *pdp;
MDB_dhead *dh;
+ DKBUF;
assert(txn != NULL);
mdp = (MDB_dpage *)dh;
newindx = *newindxp;
- DPRINTF("-----> splitting %s page %lu and adding [%.*s] at index %i",
+ DPRINTF("-----> splitting %s page %lu and adding [%s] at index %i",
IS_LEAF(&mdp->p) ? "leaf" : "branch", mdp->p.mp_pgno,
- (int)newkey->mv_size, (char *)newkey->mv_data, *newindxp);
+ DKEY(newkey), *newindxp);
if (mdp->h.md_parent == NULL) {
if ((pdp = mdb_new_page(txn, dbi, P_BRANCH, 1)) == NULL)
rdp->h.md_pi = mdp->h.md_pi + 1;
DPRINTF("new right sibling: page %lu", rdp->p.mp_pgno);
+ split_indx = NUMKEYS(&mdp->p) / 2 + 1;
+
+ if (IS_LEAF2(&rdp->p)) {
+ char *split, *ins;
+ int x;
+ unsigned int nkeys = NUMKEYS(&mdp->p), lsize, rsize, ksize;
+ /* Move half of the keys to the right sibling */
+ copy = NULL;
+ x = *newindxp - split_indx;
+ ksize = txn->mt_dbs[dbi].md_pad;
+ split = LEAF2KEY(&mdp->p, split_indx, ksize);
+ rsize = (nkeys - split_indx) * ksize;
+ lsize = (nkeys - split_indx) * sizeof(indx_t);
+ mdp->p.mp_lower -= lsize;
+ rdp->p.mp_lower += lsize;
+ mdp->p.mp_upper += rsize - lsize;
+ rdp->p.mp_upper -= rsize - lsize;
+ sepkey.mv_size = ksize;
+ if (newindx == split_indx) {
+ sepkey.mv_data = newkey->mv_data;
+ } else {
+ sepkey.mv_data = split;
+ }
+ if (x<0) {
+ ins = LEAF2KEY(&mdp->p, *newindxp, ksize);
+ memcpy(&rdp->p.mp_ptrs, split, rsize);
+ sepkey.mv_data = &rdp->p.mp_ptrs;
+ memmove(ins+ksize, ins, (split_indx - *newindxp) * ksize);
+ memcpy(ins, newkey->mv_data, ksize);
+ mdp->p.mp_lower += sizeof(indx_t);
+ mdp->p.mp_upper -= ksize - sizeof(indx_t);
+ } else {
+ if (x)
+ memcpy(&rdp->p.mp_ptrs, split, x * ksize);
+ ins = LEAF2KEY(&rdp->p, x, ksize);
+ memcpy(ins, newkey->mv_data, ksize);
+ memcpy(ins+ksize, split + x * ksize, rsize - x * ksize);
+ rdp->p.mp_lower += sizeof(indx_t);
+ rdp->p.mp_upper -= ksize - sizeof(indx_t);
+ *newindxp = x;
+ *mpp = &rdp->p;
+ }
+ goto newsep;
+ }
+
/* Move half of the keys to the right sibling. */
if ((copy = malloc(txn->mt_env->me_psize)) == NULL)
return ENOMEM;
mdp->p.mp_lower = PAGEHDRSZ;
mdp->p.mp_upper = txn->mt_env->me_psize;
- split_indx = NUMKEYS(copy) / 2 + 1;
-
/* First find the separating key between the split pages.
*/
memset(&sepkey, 0, sizeof(sepkey));
sepkey.mv_data = NODEKEY(node);
}
- DPRINTF("separator is [%.*s]", (int)sepkey.mv_size, (char *)sepkey.mv_data);
+newsep:
+ DPRINTF("separator is [%s]", DKEY(&sepkey));
/* Copy separator key to the parent.
*/
rc = mdb_add_node(txn, dbi, rdp->h.md_parent, rdp->h.md_pi,
&sepkey, NULL, rdp->p.mp_pgno, 0);
}
+ if (IS_LEAF2(&rdp->p)) {
+ return rc;
+ }
if (rc != MDB_SUCCESS) {
free(copy);
return rc;
rdata.mv_data = NODEDATA(node);
rdata.mv_size = node->mn_dsize;
} else
- pgno = node->mn_pgno;
+ pgno = NODEPGNO(node);
flags = node->mn_flags;
i++;
MDB_db dummy;
char dbuf[PAGESIZE];
int do_sub = 0;
+ size_t nsize;
+ DKBUF;
- DPRINTF("==> put key %.*s, size %zu, data size %zu",
- (int)key->mv_size, (char *)key->mv_data, key->mv_size, data->mv_size);
+ DPRINTF("==> put db %u key [%s], size %zu, data size %zu",
+ dbi, DKEY(key), key->mv_size, data->mv_size);
dkey.mv_size = 0;
mpp.mp_parent = NULL;
leaf = mdb_search_node(txn, dbi, mpp.mp_page, key, &exact, &ki);
if (leaf && exact) {
if (flags == MDB_NOOVERWRITE) {
- DPRINTF("duplicate key %.*s",
- (int)key->mv_size, (char *)key->mv_data);
+ DPRINTF("duplicate key [%s]", DKEY(key));
return MDB_KEYEXIST;
}
+ /* there's only a key anyway, so this is a no-op */
+ if (IS_LEAF2(mpp.mp_page))
+ return MDB_SUCCESS;
+
if (F_ISSET(txn->mt_dbs[dbi].md_flags, MDB_DUPSORT)) {
/* Was a single item before, must convert now */
if (!F_ISSET(leaf->mn_flags, F_DUPDATA)) {
dkey.mv_size = NODEDSZ(leaf);
+ dkey.mv_data = dbuf;
memcpy(dbuf, NODEDATA(leaf), dkey.mv_size);
+ /* data matches, ignore it */
+ if (!mdb_dcmp(txn, dbi, data, &dkey))
+ return (flags == MDB_NODUPDATA) ? MDB_KEYEXIST : MDB_SUCCESS;
memset(&dummy, 0, sizeof(dummy));
+ if (txn->mt_dbs[dbi].md_flags & MDB_DUPFIXED) {
+ dummy.md_pad = data->mv_size;
+ dummy.md_flags = MDB_DUPFIXED;
+ if (txn->mt_dbs[dbi].md_flags & MDB_INTEGERDUP)
+ dummy.md_flags |= MDB_INTEGERKEY;
+ }
dummy.md_root = P_INVALID;
if (dkey.mv_size == sizeof(MDB_db)) {
memcpy(NODEDATA(leaf), &dummy, sizeof(dummy));
goto put_sub;
}
- mdb_del_node(mpp.mp_page, ki);
+ mdb_del_node(mpp.mp_page, ki, 0);
do_sub = 1;
rdata = &xdata;
xdata.mv_size = sizeof(MDB_db);
memcpy(NODEDATA(leaf), data->mv_data, data->mv_size);
goto done;
}
- mdb_del_node(mpp.mp_page, ki);
+ mdb_del_node(mpp.mp_page, ki, 0);
}
if (leaf == NULL) { /* append if not found */
ki = NUMKEYS(mpp.mp_page);
txn->mt_dbs[dbi].md_root = mpp.mp_page->mp_pgno;
txn->mt_dbs[dbi].md_depth++;
txn->mt_dbxs[dbi].md_dirty = 1;
+ if ((txn->mt_dbs[dbi].md_flags & (MDB_DUPSORT|MDB_DUPFIXED)) == MDB_DUPFIXED)
+ mpp.mp_page->mp_flags |= P_LEAF2;
ki = 0;
}
else
rdata = data;
new_sub:
- if (SIZELEFT(mpp.mp_page) < mdb_leaf_size(txn->mt_env, key, rdata)) {
+ nsize = IS_LEAF2(mpp.mp_page) ? key->mv_size : mdb_leaf_size(txn->mt_env, key, rdata);
+ if (SIZELEFT(mpp.mp_page) < nsize) {
rc = mdb_split(txn, dbi, &mpp.mp_page, &ki, key, rdata, P_INVALID);
} else {
/* There is room already in this leaf page. */
flags = MDB_NOOVERWRITE;
/* converted, write the original data first */
if (dkey.mv_size) {
- dkey.mv_data = dbuf;
rc = mdb_put0(&mx.mx_txn, mx.mx_cursor.mc_dbi, &dkey, &xdata, flags);
if (rc) return rc;
leaf->mn_flags |= F_DUPDATA;
projects / openldap / blobdiff