NextGraph
/
lmdb
mirror of https://github.com/nextgraph-org/lmdb.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Factor out MDB variables/expressions, cleanup.

Browse Source 
mdb_page_malloc(): Take a txn arg instead of a cursor.
vmware
Hallvard Furuseth 12 years ago
parent 9e6ef6c88f
commit 6b200e3beb
1 changed files with 30 additions and 28 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 58
      libraries/liblmdb/mdb.c

58
libraries/liblmdb/mdb.c
Unescape View File

@ -1256,9 +1256,9 @@ mdb_dcmp(MDB_txn *txn, MDB_dbi dbi, const MDB_val *a, const MDB_val *b)
* Re-use old malloc'd pages first for singletons, otherwise just malloc.
*/
static MDB_page *
mdb_page_malloc(MDB_cursor *mc, unsigned num)
mdb_page_malloc(MDB_txn *txn, unsigned num)
{
MDB_env *env = mc->mc_txn->mt_env;
MDB_env *env = txn->mt_env;
MDB_page *ret = env->me_dpages;
size_t sz = env->me_psize;
if (num == 1) {
@ -1479,7 +1479,7 @@ search_done:
}
np = (MDB_page *)(env->me_map + env->me_psize * pgno);
} else {
if (!(np = mdb_page_malloc(mc, num)))
if (!(np = mdb_page_malloc(txn, num)))
return ENOMEM;
if (pgno == P_INVALID) {
pgno = txn->mt_next_pgno;
@ -1531,6 +1531,7 @@ static int
mdb_page_touch(MDB_cursor *mc)
{
MDB_page *mp = mc->mc_pg[mc->mc_top], *np;
MDB_txn *txn = mc->mc_txn;
MDB_cursor *m2, *m3;
MDB_dbi dbi;
pgno_t pgno;
@ -1542,7 +1543,7 @@ mdb_page_touch(MDB_cursor *mc)
pgno = np->mp_pgno;
DPRINTF("touched db %u page %zu -> %zu", mc->mc_dbi,mp->mp_pgno,pgno);
assert(mp->mp_pgno != pgno);
mdb_midl_append(&mc->mc_txn->mt_free_pgs, mp->mp_pgno);
mdb_midl_append(&txn->mt_free_pgs, mp->mp_pgno);
/* Update the parent page, if any, to point to the new page */
if (mc->mc_top) {
MDB_page *parent = mc->mc_pg[mc->mc_top-1];
@ -1551,8 +1552,8 @@ mdb_page_touch(MDB_cursor *mc)
} else {
mc->mc_db->md_root = pgno;
}
} else if (mc->mc_txn->mt_parent && !(mp->mp_flags & P_SUBP)) {
MDB_ID2 mid, *dl = mc->mc_txn->mt_u.dirty_list;
} else if (txn->mt_parent && !IS_SUBP(mp)) {
MDB_ID2 mid, *dl = txn->mt_u.dirty_list;
pgno = mp->mp_pgno;
/* If txn has a parent, make sure the page is in our
* dirty list.
@ -1568,7 +1569,7 @@ mdb_page_touch(MDB_cursor *mc)
}
assert(dl[0].mid < MDB_IDL_UM_MAX);
/* No - copy it */
np = mdb_page_malloc(mc, 1);
np = mdb_page_malloc(txn, 1);
if (!np)
return ENOMEM;
mid.mid = pgno;
@ -1578,7 +1579,7 @@ mdb_page_touch(MDB_cursor *mc)
return 0;
}
mdb_page_copy(np, mp, mc->mc_txn->mt_env->me_psize);
mdb_page_copy(np, mp, txn->mt_env->me_psize);
np->mp_pgno = pgno;
np->mp_flags |= P_DIRTY;
@ -1587,14 +1588,14 @@ mdb_page_touch(MDB_cursor *mc)
dbi = mc->mc_dbi;
if (mc->mc_flags & C_SUB) {
dbi--;
for (m2 = mc->mc_txn->mt_cursors[dbi]; m2; m2=m2->mc_next) {
for (m2 = txn->mt_cursors[dbi]; m2; m2=m2->mc_next) {
m3 = &m2->mc_xcursor->mx_cursor;
if (m3->mc_snum < mc->mc_snum) continue;
if (m3->mc_pg[mc->mc_top] == mp)
m3->mc_pg[mc->mc_top] = np;
}
} else {
for (m2 = mc->mc_txn->mt_cursors[dbi]; m2; m2=m2->mc_next) {
for (m2 = txn->mt_cursors[dbi]; m2; m2=m2->mc_next) {
if (m2->mc_snum < mc->mc_snum) continue;
if (m2->mc_pg[mc->mc_top] == mp) {
m2->mc_pg[mc->mc_top] = np;
@ -2002,13 +2003,12 @@ mdb_txn_reset0(MDB_txn *txn)
mdb_midl_free(txn->mt_free_pgs);
free(txn->mt_u.dirty_list);
return;
} else {
if (mdb_midl_shrink(&txn->mt_free_pgs))
env->me_free_pgs = txn->mt_free_pgs;
}
txn->mt_env->me_pghead = NULL;
txn->mt_env->me_pglast = 0;
if (mdb_midl_shrink(&txn->mt_free_pgs))
env->me_free_pgs = txn->mt_free_pgs;
env->me_pghead = NULL;
env->me_pglast = 0;
env->me_txn = NULL;
/* The writer mutex was locked in mdb_txn_begin. */
@ -2699,7 +2699,7 @@ done:
* readers will get consistent data regardless of how fresh or
* how stale their view of these values is.
*/
txn->mt_env->me_txns->mti_txnid = txn->mt_txnid;
env->me_txns->mti_txnid = txn->mt_txnid;
return MDB_SUCCESS;
}
@ -5203,7 +5203,7 @@ current:
if (level > 1) {
/* It is writable only in a parent txn */
size_t sz = (size_t) psize * ovpages, off;
MDB_page *np = mdb_page_malloc(mc, ovpages);
MDB_page *np = mdb_page_malloc(mc->mc_txn, ovpages);
MDB_ID2 id2;
if (!np)
return ENOMEM;
@ -6878,7 +6878,7 @@ newsep:
/* Move half of the keys to the right sibling. */
/* grab a page to hold a temporary copy */
copy = mdb_page_malloc(mc, 1);
copy = mdb_page_malloc(mc->mc_txn, 1);
if (copy == NULL)
return ENOMEM;
@ -7295,6 +7295,7 @@ mdb_drop0(MDB_cursor *mc, int subs)
rc = mdb_page_search(mc, NULL, 0);
if (rc == MDB_SUCCESS) {
MDB_txn *txn = mc->mc_txn;
MDB_node *ni;
MDB_cursor mx;
unsigned int i;
@ -7305,21 +7306,23 @@ mdb_drop0(MDB_cursor *mc, int subs)
mdb_cursor_copy(mc, &mx);
while (mc->mc_snum > 0) {
if (IS_LEAF(mc->mc_pg[mc->mc_top])) {
for (i=0; i<NUMKEYS(mc->mc_pg[mc->mc_top]); i++) {
ni = NODEPTR(mc->mc_pg[mc->mc_top], i);
MDB_page *mp = mc->mc_pg[mc->mc_top];
unsigned n = NUMKEYS(mp);
if (IS_LEAF(mp)) {
for (i=0; i<n; i++) {
ni = NODEPTR(mp, i);
if (ni->mn_flags & F_BIGDATA) {
int j, ovpages;
MDB_page *omp;
pgno_t pg;
memcpy(&pg, NODEDATA(ni), sizeof(pg));
rc = mdb_page_get(mc->mc_txn, pg, &omp, NULL);
rc = mdb_page_get(txn, pg, &omp, NULL);
if (rc != 0)
return rc;
assert(IS_OVERFLOW(omp));
ovpages = omp->mp_pages;
for (j=0; j<ovpages; j++) {
mdb_midl_append(&mc->mc_txn->mt_free_pgs, pg);
mdb_midl_append(&txn->mt_free_pgs, pg);
pg++;
}
} else if (subs && (ni->mn_flags & F_SUBDATA)) {
@ -7330,12 +7333,12 @@ mdb_drop0(MDB_cursor *mc, int subs)
}
}
} else {
for (i=0; i<NUMKEYS(mc->mc_pg[mc->mc_top]); i++) {
for (i=0; i<n; i++) {
pgno_t pg;
ni = NODEPTR(mc->mc_pg[mc->mc_top], i);
ni = NODEPTR(mp, i);
pg = NODEPGNO(ni);
/* free it */
mdb_midl_append(&mc->mc_txn->mt_free_pgs, pg);
mdb_midl_append(&txn->mt_free_pgs, pg);
}
}
if (!mc->mc_top)
@ -7355,8 +7358,7 @@ mdb_drop0(MDB_cursor *mc, int subs)
}
}
/* free it */
mdb_midl_append(&mc->mc_txn->mt_free_pgs,
mc->mc_db->md_root);
mdb_midl_append(&txn->mt_free_pgs, mc->mc_db->md_root);
}
return 0;
}

Write Preview
Loading…
Cancel
Save