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Parameter cleanup

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This commit is contained in:
Howard Chu 2011-08-11 01:36:12 -07:00
parent 819d98169e
commit 39817f6e85
2 changed files with 46 additions and 25 deletions
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65
libraries/libmdb/mdb.c
View File

@ -254,10 +254,10 @@ typedef struct MDB_node {
unsigned int mn_flags:4;
unsigned int mn_ksize:12; /* key size */
#define F_BIGDATA 0x01 /* data put on overflow page */
#define F_SUBDATA 0x02 /* data is a sub-database */
char mn_data[1];
} MDB_node;
typedef struct MDB_dbx {
MDB_val md_name;
MDB_cmp_func *md_cmp; /* user compare function */
@ -354,6 +354,8 @@ static int mdb_add_node(MDB_txn *txn, MDB_dbi dbi, MDB_page *mp,
static void mdb_del_node(MDB_page *mp, indx_t indx);
static int mdb_del0(MDB_txn *txn, MDB_dbi dbi, unsigned int ki,
MDB_pageparent *mpp, MDB_node *leaf);
static int mdb_put0(MDB_txn *txn, MDB_dbi dbi,
MDB_val *key, MDB_val *data, unsigned int flags);
static int mdb_read_data(MDB_txn *txn, MDB_node *leaf, MDB_val *data);
static int mdb_rebalance(MDB_txn *txn, MDB_dbi dbi, MDB_pageparent *mp);
@ -774,7 +776,7 @@ mdb_txn_commit(MDB_txn *txn)
key.mv_data = (char *)&mop->mo_txnid;
data.mv_size = MDB_IDL_SIZEOF(mop->mo_pages);
data.mv_data = mop->mo_pages;
mdb_put(txn, FREE_DBI, &key, &data, 0);
mdb_put0(txn, FREE_DBI, &key, &data, 0);
free(env->me_pghead);
env->me_pghead = NULL;
}
@ -806,7 +808,7 @@ mdb_txn_commit(MDB_txn *txn)
key.mv_data = (char *)&txn->mt_txnid;
data.mv_size = MDB_IDL_SIZEOF(txn->mt_free_pgs);
data.mv_data = txn->mt_free_pgs;
mdb_put(txn, FREE_DBI, &key, &data, 0);
mdb_put0(txn, FREE_DBI, &key, &data, 0);
}
/* Update DB root pointers. Their pages have already been
@ -819,7 +821,7 @@ mdb_txn_commit(MDB_txn *txn)
for (i = 2; i < txn->mt_numdbs; i++) {
if (txn->mt_dbxs[i].md_dirty) {
data.mv_data = &txn->mt_dbs[i];
mdb_put(txn, i, &txn->mt_dbxs[i].md_name, &data, 0);
mdb_put0(txn, i, &txn->mt_dbxs[i].md_name, &data, 0);
}
}
}
@ -1659,6 +1661,9 @@ mdb_get(MDB_txn *txn, MDB_dbi dbi,
assert(data);
DPRINTF("===> get key [%.*s]", (int)key->mv_size, (char *)key->mv_data);
if (txn == NULL || dbi >= txn->mt_numdbs)
return EINVAL;
if (key->mv_size == 0 || key->mv_size > MAXKEYSIZE) {
return EINVAL;
}
@ -2908,8 +2913,8 @@ mdb_split(MDB_txn *txn, MDB_dbi dbi, MDB_page **mpp, unsigned int *newindxp,
return rc;
}
int
mdb_put(MDB_txn *txn, MDB_dbi dbi,
static int
mdb_put0(MDB_txn *txn, MDB_dbi dbi,
MDB_val *key, MDB_val *data, unsigned int flags)
{
int rc = MDB_SUCCESS, exact;
@ -2919,20 +2924,6 @@ mdb_put(MDB_txn *txn, MDB_dbi dbi,
MDB_val xdata, *rdata;
MDB_db dummy;
assert(key != NULL);
assert(data != NULL);
if (txn == NULL)
return EINVAL;
if (F_ISSET(txn->mt_flags, MDB_TXN_RDONLY)) {
return EINVAL;
}
if (key->mv_size == 0 || key->mv_size > MAXKEYSIZE) {
return EINVAL;
}
DPRINTF("==> put key %.*s, size %zu, data size %zu",
(int)key->mv_size, (char *)key->mv_data, key->mv_size, data->mv_size);
@ -2996,6 +2987,7 @@ mdb_put(MDB_txn *txn, MDB_dbi dbi,
if (SIZELEFT(mpp.mp_page) < mdb_leaf_size(txn->mt_env, key, data)) {
rc = mdb_split(txn, dbi, &mpp.mp_page, &ki, key, data, P_INVALID);
leaf = NODEPTR(mpp.mp_page, ki);
} else {
/* There is room already in this leaf page. */
rc = mdb_add_node(txn, dbi, mpp.mp_page, ki, key, data, 0, 0);
@ -3005,6 +2997,11 @@ mdb_put(MDB_txn *txn, MDB_dbi dbi,
txn->mt_flags |= MDB_TXN_ERROR;
else {
txn->mt_dbs[dbi].md_entries++;
/* Remember if we just added a subdatabase */
if (flags & F_SUBDATA)
leaf->mn_flags |= F_SUBDATA;
/* Now store the actual data in the child DB. Note that we're
* storing the user data in the keys field, so there are strict
* size limits on dupdata. The actual data fields of the child
@ -3021,7 +3018,7 @@ put_sub:
xdata.mv_data = "";
if (flags == MDB_NODUPDATA)
flags = MDB_NOOVERWRITE;
rc = mdb_put(&mx.mx_txn, mx.mx_cursor.mc_dbi, data, &xdata, flags);
rc = mdb_put0(&mx.mx_txn, mx.mx_cursor.mc_dbi, data, &xdata, flags);
mdb_xcursor_fini(txn, dbi, &mx);
memcpy(NODEDATA(leaf), &mx.mx_txn.mt_dbs[mx.mx_cursor.mc_dbi],
sizeof(MDB_db));
@ -3032,6 +3029,30 @@ done:
return rc;
}
int
mdb_put(MDB_txn *txn, MDB_dbi dbi,
MDB_val *key, MDB_val *data, unsigned int flags)
{
assert(key != NULL);
assert(data != NULL);
if (txn == NULL || dbi >= txn->mt_numdbs)
return EINVAL;
if (F_ISSET(txn->mt_flags, MDB_TXN_RDONLY)) {
return EINVAL;
}
if (key->mv_size == 0 || key->mv_size > MAXKEYSIZE) {
return EINVAL;
}
if ((flags & (MDB_NOOVERWRITE|MDB_NODUPDATA)) != flags)
return EINVAL;
return mdb_put0(txn, dbi, key, data, flags);
}
int
mdbenv_get_flags(MDB_env *env, unsigned int *arg)
{
@ -3107,7 +3128,7 @@ int mdb_open(MDB_txn *txn, const char *name, unsigned int flags, MDB_dbi *dbi)
memset(&dummy, 0, sizeof(dummy));
dummy.md_root = P_INVALID;
dummy.md_flags = flags & 0xffff;
rc = mdb_put(txn, MAIN_DBI, &key, &data, 0);
rc = mdb_put0(txn, MAIN_DBI, &key, &data, F_SUBDATA);
dirty = 1;
}

6
libraries/libmdb/mdb.h
View File

@ -50,9 +50,9 @@ typedef struct MDB_val {
typedef int (MDB_cmp_func)(const MDB_val *a, const MDB_val *b);
typedef void (MDB_rel_func)(void *ptr, void *oldptr);
#define MDB_NOOVERWRITE 1
#define MDB_NODUPDATA 2
#define MDB_DEL_DUP 3
#define MDB_NOOVERWRITE 0x10
#define MDB_NODUPDATA 0x20
#define MDB_DEL_DUP 0x40
typedef enum MDB_cursor_op { /* cursor operations */
MDB_FIRST,