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Factor some MDB_VL32-related '#if's out to macros

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Add MC_OVPG() + MC_SET_OVPG(), NEED_CMP_CLONG(), MDB_CURSOR_UNREF().
ntdll
Hallvard Furuseth 8 years ago
parent 32764bcb52
commit dff8bafb36
1 changed files with 38 additions and 65 deletions
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  1. 103
      libraries/liblmdb/mdb.c

103
libraries/liblmdb/mdb.c
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@ -1304,6 +1304,11 @@ struct MDB_cursor {
indx_t mc_ki[CURSOR_STACK]; /**< stack of page indices */
#ifdef MDB_VL32
MDB_page *mc_ovpg; /**< a referenced overflow page */
# define MC_OVPG(mc) ((mc)->mc_ovpg)
# define MC_SET_OVPG(mc, pg) ((mc)->mc_ovpg = (pg))
#else
# define MC_OVPG(mc) ((MDB_page *)0)
# define MC_SET_OVPG(mc, pg) ((void)0)
#endif
};
@ -1516,6 +1521,11 @@ static MDB_cmp_func mdb_cmp_memn, mdb_cmp_memnr, mdb_cmp_int, mdb_cmp_cint, mdb_
# define mdb_cmp_clong mdb_cmp_cint
#endif
/** True if we need #mdb_cmp_clong() instead of \b cmp for #MDB_INTEGERDUP */
#define NEED_CMP_CLONG(cmp, ksize) \
(UINT_MAX < MDB_SIZE_MAX && \
(cmp) == mdb_cmp_int && (ksize) == sizeof(mdb_size_t))
#ifdef _WIN32
static SECURITY_DESCRIPTOR mdb_null_sd;
static SECURITY_ATTRIBUTES mdb_all_sa;
@ -1842,10 +1852,8 @@ int
mdb_dcmp(MDB_txn *txn, MDB_dbi dbi, const MDB_val *a, const MDB_val *b)
{
MDB_cmp_func *dcmp = txn->mt_dbxs[dbi].md_dcmp;
#if UINT_MAX < SIZE_MAX || defined(MDB_VL32)
if (dcmp == mdb_cmp_int && a->mv_size == sizeof(mdb_size_t))
if (NEED_CMP_CLONG(dcmp, a->mv_size))
dcmp = mdb_cmp_clong;
#endif
return dcmp(a, b);
}
@ -1960,8 +1968,14 @@ mdb_cursor_unref(MDB_cursor *mc)
mc->mc_pg[0] = NULL;
mc->mc_flags &= ~C_INITIALIZED;
}
#define MDB_CURSOR_UNREF(mc, force) \
(((force) || ((mc)->mc_flags & C_INITIALIZED)) \
? mdb_cursor_unref(mc) \
: (void)0)
#else
#define MDB_PAGE_UNREF(txn, mp)
#define MDB_CURSOR_UNREF(mc, force) ((void)0)
#endif /* MDB_VL32 */
/** Loosen or free a single page.
@ -6292,12 +6306,10 @@ mdb_node_read(MDB_cursor *mc, MDB_node *leaf, MDB_val *data)
pgno_t pgno;
int rc;
#ifdef MDB_VL32
if (mc->mc_ovpg) {
MDB_PAGE_UNREF(mc->mc_txn, mc->mc_ovpg);
mc->mc_ovpg = 0;
if (MC_OVPG(mc)) {
MDB_PAGE_UNREF(mc->mc_txn, MC_OVPG(mc));
MC_SET_OVPG(mc, NULL);
}
#endif
if (!F_ISSET(leaf->mn_flags, F_BIGDATA)) {
data->mv_size = NODEDSZ(leaf);
data->mv_data = NODEDATA(leaf);
@ -6313,9 +6325,7 @@ mdb_node_read(MDB_cursor *mc, MDB_node *leaf, MDB_val *data)
return rc;
}
data->mv_data = METADATA(omp);
#ifdef MDB_VL32
mc->mc_ovpg = omp;
#endif
MC_SET_OVPG(mc, omp);
return MDB_SUCCESS;
}
@ -6339,14 +6349,10 @@ mdb_get(MDB_txn *txn, MDB_dbi dbi,
mdb_cursor_init(&mc, txn, dbi, &mx);
rc = mdb_cursor_set(&mc, key, data, MDB_SET, &exact);
#ifdef MDB_VL32
{
/* unref all the pages - caller must copy the data
* before doing anything else
*/
mdb_cursor_unref(&mc);
}
#endif
/* unref all the pages when MDB_VL32 - caller must copy the data
* before doing anything else
*/
MDB_CURSOR_UNREF(&mc, 1);
return rc;
}
@ -6443,13 +6449,9 @@ mdb_cursor_next(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_cursor_op op)
return rc;
}
}
#ifdef MDB_VL32
else {
if (mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED) {
mdb_cursor_unref(&mc->mc_xcursor->mx_cursor);
}
MDB_CURSOR_UNREF(&mc->mc_xcursor->mx_cursor, 0);
}
#endif
} else {
mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED|C_EOF);
if (op == MDB_NEXT_DUP)
@ -6536,13 +6538,9 @@ mdb_cursor_prev(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_cursor_op op)
return rc;
}
}
#ifdef MDB_VL32
else {
if (mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED) {
mdb_cursor_unref(&mc->mc_xcursor->mx_cursor);
}
MDB_CURSOR_UNREF(&mc->mc_xcursor->mx_cursor, 0);
}
#endif
} else {
mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED|C_EOF);
if (op == MDB_PREV_DUP)
@ -6744,11 +6742,8 @@ set1:
return MDB_SUCCESS;
}
#ifdef MDB_VL32
if (mc->mc_xcursor && mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED) {
mdb_cursor_unref(&mc->mc_xcursor->mx_cursor);
}
#endif
if (mc->mc_xcursor)
MDB_CURSOR_UNREF(&mc->mc_xcursor->mx_cursor, 0);
if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
mdb_xcursor_init1(mc, leaf);
}
@ -6774,10 +6769,8 @@ set1:
if ((rc = mdb_node_read(mc, leaf, &olddata)) != MDB_SUCCESS)
return rc;
dcmp = mc->mc_dbx->md_dcmp;
#if UINT_MAX < SIZE_MAX || defined(MDB_VL32)
if (dcmp == mdb_cmp_int && olddata.mv_size == sizeof(mdb_size_t))
if (NEED_CMP_CLONG(dcmp, olddata.mv_size))
dcmp = mdb_cmp_clong;
#endif
rc = dcmp(data, &olddata);
if (rc) {
if (op == MDB_GET_BOTH || rc > 0)
@ -6810,11 +6803,7 @@ mdb_cursor_first(MDB_cursor *mc, MDB_val *key, MDB_val *data)
MDB_node *leaf;
if (mc->mc_xcursor) {
#ifdef MDB_VL32
if (mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED) {
mdb_cursor_unref(&mc->mc_xcursor->mx_cursor);
}
#endif
MDB_CURSOR_UNREF(&mc->mc_xcursor->mx_cursor, 0);
mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED|C_EOF);
}
@ -6860,11 +6849,7 @@ mdb_cursor_last(MDB_cursor *mc, MDB_val *key, MDB_val *data)
MDB_node *leaf;
if (mc->mc_xcursor) {
#ifdef MDB_VL32
if (mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED) {
mdb_cursor_unref(&mc->mc_xcursor->mx_cursor);
}
#endif
MDB_CURSOR_UNREF(&mc->mc_xcursor->mx_cursor, 0);
mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED|C_EOF);
}
@ -7320,10 +7305,8 @@ more:
if (flags == MDB_CURRENT)
goto current;
dcmp = mc->mc_dbx->md_dcmp;
#if UINT_MAX < SIZE_MAX || defined(MDB_VL32)
if (dcmp == mdb_cmp_int && olddata.mv_size == sizeof(mdb_size_t))
if (NEED_CMP_CLONG(dcmp, olddata.mv_size))
dcmp = mdb_cmp_clong;
#endif
/* does data match? */
if (!dcmp(data, &olddata)) {
if (flags & (MDB_NODUPDATA|MDB_APPENDDUP))
@ -8107,9 +8090,7 @@ mdb_xcursor_init0(MDB_cursor *mc)
mx->mx_cursor.mc_dbflag = &mx->mx_dbflag;
mx->mx_cursor.mc_snum = 0;
mx->mx_cursor.mc_top = 0;
#ifdef MDB_VL32
mx->mx_cursor.mc_ovpg = 0;
#endif
MC_SET_OVPG(&mx->mx_cursor, NULL);
mx->mx_cursor.mc_flags = C_SUB | (mc->mc_flags & (C_ORIG_RDONLY|C_WRITEMAP));
mx->mx_dbx.md_name.mv_size = 0;
mx->mx_dbx.md_name.mv_data = NULL;
@ -8160,10 +8141,8 @@ mdb_xcursor_init1(MDB_cursor *mc, MDB_node *node)
DPRINTF(("Sub-db -%u root page %"Y"u", mx->mx_cursor.mc_dbi,
mx->mx_db.md_root));
mx->mx_dbflag = DB_VALID|DB_USRVALID|DB_DIRTY; /* DB_DIRTY guides mdb_cursor_touch */
#if UINT_MAX < SIZE_MAX || defined(MDB_VL32)
if (mx->mx_dbx.md_cmp == mdb_cmp_int && mx->mx_db.md_pad == sizeof(mdb_size_t))
if (NEED_CMP_CLONG(mx->mx_dbx.md_cmp, mx->mx_db.md_pad))
mx->mx_dbx.md_cmp = mdb_cmp_clong;
#endif
}
@ -8213,9 +8192,7 @@ mdb_cursor_init(MDB_cursor *mc, MDB_txn *txn, MDB_dbi dbi, MDB_xcursor *mx)
mc->mc_top = 0;
mc->mc_pg[0] = 0;
mc->mc_ki[0] = 0;
#ifdef MDB_VL32
mc->mc_ovpg = 0;
#endif
MC_SET_OVPG(mc, NULL);
mc->mc_flags = txn->mt_flags & (C_ORIG_RDONLY|C_WRITEMAP);
if (txn->mt_dbs[dbi].md_flags & MDB_DUPSORT) {
mdb_tassert(txn, mx != NULL);
@ -8830,9 +8807,7 @@ mdb_cursor_copy(const MDB_cursor *csrc, MDB_cursor *cdst)
cdst->mc_snum = csrc->mc_snum;
cdst->mc_top = csrc->mc_top;
cdst->mc_flags = csrc->mc_flags;
#ifdef MDB_VL32
cdst->mc_ovpg = csrc->mc_ovpg;
#endif
MC_SET_OVPG(cdst, MC_OVPG(csrc));
for (i=0; i<csrc->mc_snum; i++) {
cdst->mc_pg[i] = csrc->mc_pg[i];
@ -10605,10 +10580,8 @@ pop:
done:
if (rc)
txn->mt_flags |= MDB_TXN_ERROR;
#ifdef MDB_VL32
/* drop refcount for mx's pages */
mdb_cursor_unref(&mx);
#endif
MDB_CURSOR_UNREF(&mx, 0);
} else if (rc == MDB_NOTFOUND) {
rc = MDB_SUCCESS;
}

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