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Merge remote-tracking branch 'origin/mdb.master'

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This commit is contained in:
Howard Chu 2012-12-10 12:22:30 -08:00
commit 3bf87500a3
2 changed files with 39 additions and 17 deletions
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40
libraries/liblmdb/mdb.c
View File

@ -1347,6 +1347,11 @@ none:
mdb_cursor_init(&m2, txn, FREE_DBI, NULL);
do {
/* bail out if we're operating on the freelist.
* TODO: get all of this working. Many circular dependencies...
*/
if (mc->mc_dbi == FREE_DBI)
break;
if (readit) {
MDB_val key, data;
MDB_oldpages *mop2;
@ -2121,7 +2126,12 @@ mdb_txn_commit(MDB_txn *txn)
/* should only be one record now */
if (env->me_pghead) {
/* make sure first page of freeDB is touched and on freelist */
mdb_page_search(&mc, NULL, MDB_PS_MODIFY);
rc = mdb_page_search(&mc, NULL, MDB_PS_MODIFY);
if (rc) {
fail:
mdb_txn_abort(txn);
return rc;
}
}
/* Delete IDLs we used from the free list */
@ -2136,10 +2146,8 @@ mdb_txn_commit(MDB_txn *txn)
mdb_cursor_set(&mc, &key, NULL, MDB_SET, &exact);
rc = mdb_cursor_del(&mc, 0);
if (rc) {
mdb_txn_abort(txn);
return rc;
}
if (rc)
goto fail;
}
env->me_pgfirst = 0;
env->me_pglast = 0;
@ -2154,7 +2162,9 @@ free2:
/* make sure last page of freeDB is touched and on freelist */
key.mv_size = MAXKEYSIZE+1;
key.mv_data = NULL;
mdb_page_search(&mc, &key, MDB_PS_MODIFY);
rc = mdb_page_search(&mc, &key, MDB_PS_MODIFY);
if (rc)
goto fail;
#if MDB_DEBUG > 1
{
@ -2181,10 +2191,8 @@ free2:
data.mv_size = MDB_IDL_SIZEOF(txn->mt_free_pgs);
mdb_midl_sort(txn->mt_free_pgs);
rc = mdb_cursor_put(&mc, &key, &data, 0);
if (rc) {
mdb_txn_abort(txn);
return rc;
}
if (rc)
goto fail;
} while (freecnt != txn->mt_free_pgs[0]);
}
/* should only be one record now */
@ -2205,18 +2213,24 @@ again:
/* These steps may grow the freelist again
* due to freed overflow pages...
*/
mdb_cursor_put(&mc, &key, &data, 0);
rc = mdb_cursor_put(&mc, &key, &data, 0);
if (rc)
goto fail;
if (mop == env->me_pghead && env->me_pghead->mo_txnid == id) {
/* could have been used again here */
if (mop->mo_pages[0] != orig) {
data.mv_size = MDB_IDL_SIZEOF(mop->mo_pages);
data.mv_data = mop->mo_pages;
id = mop->mo_txnid;
mdb_cursor_put(&mc, &key, &data, 0);
rc = mdb_cursor_put(&mc, &key, &data, 0);
if (rc)
goto fail;
}
} else {
/* was completely used up */
mdb_cursor_del(&mc, 0);
rc = mdb_cursor_del(&mc, 0);
if (rc)
goto fail;
if (env->me_pghead)
goto again;
}

16
libraries/liblmdb/mdb_stat.c
View File

@ -31,7 +31,7 @@ static void prstat(MDB_stat *ms)
static void usage(char *prog)
{
fprintf(stderr, "usage: %s dbpath [-e] [-f] [-n] [-a|-s subdb]\n", prog);
fprintf(stderr, "usage: %s dbpath [-e] [-f[f]] [-n] [-a|-s subdb]\n", prog);
exit(EXIT_FAILURE);
}
@ -122,7 +122,7 @@ int main(int argc, char *argv[])
if (freinfo) {
MDB_cursor *cursor;
MDB_val data;
MDB_val key, data;
size_t pages = 0, *iptr;
printf("Freelist Status\n");
@ -137,12 +137,20 @@ int main(int argc, char *argv[])
printf("mdb_stat failed, error %d %s\n", rc, mdb_strerror(rc));
goto txn_abort;
}
while ((rc = mdb_cursor_get(cursor, NULL, &data, MDB_NEXT)) == 0) {
prstat(&mst);
while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
iptr = data.mv_data;
pages += *iptr;
if (freinfo > 1) {
size_t i, j;
j = *iptr++;
printf(" Transaction %zu, %zu pages\n",
*(size_t *)key.mv_data, j);
for (i=0; i<j; i++)
printf(" %zu\n", iptr[i]);
}
}
mdb_cursor_close(cursor);
prstat(&mst);
printf(" Free pages: %zu\n", pages);
}