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mdb_page_list(): Support & display all page types

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This commit is contained in:
Hallvard Furuseth 2014-03-16 12:42:42 +01:00
parent a22c31115f
commit 3e7c1bd4e2
1 changed files with 42 additions and 3 deletions
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45
libraries/liblmdb/mdb.c
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@ -1282,18 +1282,55 @@ mdb_dkey(MDB_val *key, char *buf)
return buf;
}
static const char *
mdb_leafnode_type(MDB_node *n)
{
static char *const tp[2][2] = {{"", ": DB"}, {": sub-page", ": sub-DB"}};
return F_ISSET(n->mn_flags, F_BIGDATA) ? ": overflow page" :
tp[F_ISSET(n->mn_flags, F_DUPDATA)][F_ISSET(n->mn_flags, F_SUBDATA)];
}
/** Display all the keys in the page. */
void
mdb_page_list(MDB_page *mp)
{
pgno_t pgno = mdb_dbg_pgno(mp);
const char *type, *state = (mp->mp_flags & P_DIRTY) ? ", dirty" : "";
MDB_node *node;
unsigned int i, nkeys, nsize, total = 0;
MDB_val key;
DKBUF;
switch (mp->mp_flags & (P_BRANCH|P_LEAF|P_LEAF2|P_META|P_OVERFLOW|P_SUBP)) {
case P_BRANCH: type = "Branch page"; break;
case P_LEAF: type = "Leaf page"; break;
case P_LEAF|P_SUBP: type = "Sub-page"; break;
case P_LEAF|P_LEAF2: type = "LEAF2 page"; break;
case P_LEAF|P_LEAF2|P_SUBP: type = "LEAF2 sub-page"; break;
case P_OVERFLOW:
fprintf(stderr, "Overflow page %"Z"u pages %u%s\n",
pgno, mp->mp_pages, state);
return;
case P_META:
fprintf(stderr, "Meta-page %"Z"u txnid %"Z"u\n",
pgno, ((MDB_meta *)METADATA(mp))->mm_txnid);
return;
default:
fprintf(stderr, "Bad page %"Z"u flags 0x%u\n", pgno, mp->mp_flags);
return;
}
nkeys = NUMKEYS(mp);
fprintf(stderr, "Page %"Z"u numkeys %d\n", mdb_dbg_pgno(mp), nkeys);
fprintf(stderr, "%s %"Z"u numkeys %d%s\n", type, pgno, nkeys, state);
for (i=0; i<nkeys; i++) {
if (IS_LEAF2(mp)) { /* LEAF2 pages have no mp_ptrs[] or node headers */
key.mv_size = nsize = mp->mp_pad;
key.mv_data = LEAF2KEY(mp, i, nsize);
total += nsize;
fprintf(stderr, "key %d: nsize %d, %s\n", i, nsize, DKEY(&key));
continue;
}
node = NODEPTR(mp, i);
key.mv_size = node->mn_ksize;
key.mv_data = node->mn_data;
@ -1309,11 +1346,13 @@ mdb_page_list(MDB_page *mp)
nsize += NODEDSZ(node);
total += nsize;
nsize += sizeof(indx_t);
fprintf(stderr, "key %d: nsize %d, %s\n", i, nsize, DKEY(&key));
fprintf(stderr, "key %d: nsize %d, %s%s\n",
i, nsize, DKEY(&key), mdb_leafnode_type(node));
}
total = EVEN(total);
}
fprintf(stderr, "Total: %d\n", total);
fprintf(stderr, "Total: header %d + contents %d + unused %d\n",
IS_LEAF2(mp) ? PAGEHDRSZ : mp->mp_lower, total, SIZELEFT(mp));
}
void