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Warning cleanup.

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Drop unused computed/assigned values.
mdb_page_alloc(): Make "mop_len>0 implies mop!=NULL" provable.
This commit is contained in:
Hallvard Furuseth 2013-12-11 11:57:12 +01:00
parent e1266bf331
commit 753356a38a
2 changed files with 5 additions and 8 deletions
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11
libraries/liblmdb/mdb.c
View file

@ -1674,11 +1674,11 @@ mdb_page_alloc(MDB_cursor *mc, int num, MDB_page **mp)
#else #else
enum { Paranoid = 0, Max_retries = INT_MAX /*infinite*/ }; enum { Paranoid = 0, Max_retries = INT_MAX /*infinite*/ };
#endif #endif
int rc, n2 = num-1, retry = Max_retries; int rc, retry = Max_retries;
MDB_txn *txn = mc->mc_txn; MDB_txn *txn = mc->mc_txn;
MDB_env *env = txn->mt_env; MDB_env *env = txn->mt_env;
pgno_t pgno, *mop = env->me_pghead; pgno_t pgno, *mop = env->me_pghead;
unsigned i, j, k, mop_len = mop ? mop[0] : 0; unsigned i, j, k, mop_len = mop ? mop[0] : 0, n2 = num-1;
MDB_page *np; MDB_page *np;
txnid_t oldest = 0, last; txnid_t oldest = 0, last;
MDB_cursor_op op; MDB_cursor_op op;
@ -1698,13 +1698,13 @@ mdb_page_alloc(MDB_cursor *mc, int num, MDB_page **mp)
/* Seek a big enough contiguous page range. Prefer /* Seek a big enough contiguous page range. Prefer
* pages at the tail, just truncating the list. * pages at the tail, just truncating the list.
*/ */
if (mop_len >= (unsigned)num) { if (mop_len > n2) {
i = mop_len; i = mop_len;
do { do {
pgno = mop[i]; pgno = mop[i];
if (mop[i-n2] == pgno+n2) if (mop[i-n2] == pgno+n2)
goto search_done; goto search_done;
} while (--i >= (unsigned)num); } while (--i > n2);
if (Max_retries < INT_MAX && --retry < 0) if (Max_retries < INT_MAX && --retry < 0)
break; break;
} }
@ -6512,7 +6512,6 @@ mdb_node_shrink(MDB_page *mp, indx_t indx)
memmove(METADATA(xp), METADATA(sp), nsize); memmove(METADATA(xp), METADATA(sp), nsize);
} else { } else {
int i; int i;
nsize = osize - sp->mp_upper;
numkeys = NUMKEYS(sp); numkeys = NUMKEYS(sp);
for (i=numkeys-1; i>=0; i--) for (i=numkeys-1; i>=0; i--)
xp->mp_ptrs[i] = sp->mp_ptrs[i] - delta; xp->mp_ptrs[i] = sp->mp_ptrs[i] - delta;
@ -6846,7 +6845,6 @@ mdb_node_move(MDB_cursor *csrc, MDB_cursor *cdst)
return rc; return rc;
if (IS_LEAF2(csrc->mc_pg[csrc->mc_top])) { if (IS_LEAF2(csrc->mc_pg[csrc->mc_top])) {
srcnode = NODEPTR(csrc->mc_pg[csrc->mc_top], 0); /* fake */
key.mv_size = csrc->mc_db->md_pad; key.mv_size = csrc->mc_db->md_pad;
key.mv_data = LEAF2KEY(csrc->mc_pg[csrc->mc_top], csrc->mc_ki[csrc->mc_top], key.mv_size); key.mv_data = LEAF2KEY(csrc->mc_pg[csrc->mc_top], csrc->mc_ki[csrc->mc_top], key.mv_size);
data.mv_size = 0; data.mv_size = 0;
@ -8370,7 +8368,6 @@ int mdb_reader_check(MDB_env *env, int *dead)
return ENOMEM; return ENOMEM;
pids[0] = 0; pids[0] = 0;
mr = env->me_txns->mti_readers; mr = env->me_txns->mti_readers;
j = 0;
for (i=0; i<rdrs; i++) { for (i=0; i<rdrs; i++) {
if (mr[i].mr_pid && mr[i].mr_pid != env->me_pid) { if (mr[i].mr_pid && mr[i].mr_pid != env->me_pid) {
pid = mr[i].mr_pid; pid = mr[i].mr_pid;

2
libraries/liblmdb/midl.c
View file

@ -150,7 +150,7 @@ int mdb_midl_need( MDB_IDL *idp, unsigned num )
num = (num + num/4 + (256 + 2)) & -256; num = (num + num/4 + (256 + 2)) & -256;
if (!(ids = realloc(ids-1, num * sizeof(MDB_ID)))) if (!(ids = realloc(ids-1, num * sizeof(MDB_ID))))
return ENOMEM; return ENOMEM;
*ids++ = num -= 2; *ids++ = num - 2;
*idp = ids; *idp = ids;
} }
return 0; return 0;