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Save pid in MDB_env instead of repeating getpid().

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An open MDB environment does not survive or catch fork(),
so repeating getpid() was pointless.
This commit is contained in:
Hallvard Furuseth 2012-09-17 15:42:14 +02:00
parent 20a216fcc9
commit 38cc1e96b4
1 changed files with 4 additions and 2 deletions
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6
libraries/libmdb/mdb.c
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@ -906,6 +906,7 @@ struct MDB_env {
unsigned int me_maxreaders; /**< size of the reader table */
MDB_dbi me_numdbs; /**< number of DBs opened */
MDB_dbi me_maxdbs; /**< size of the DB table */
pid_t me_pid; /**< process ID of this env */
char *me_path; /**< path to the DB files */
char *me_map; /**< the memory map of the data file */
MDB_txninfo *me_txns; /**< the memory map of the lock file */
@ -1625,7 +1626,7 @@ mdb_txn_renew0(MDB_txn *txn)
if (txn->mt_flags & MDB_TXN_RDONLY) {
MDB_reader *r = pthread_getspecific(env->me_txkey);
if (!r) {
pid_t pid = getpid();
pid_t pid = env->me_pid;
pthread_t tid = pthread_self();
LOCK_MUTEX_R(env);
@ -2506,6 +2507,7 @@ mdb_env_create(MDB_env **env)
e->me_fd = INVALID_HANDLE_VALUE;
e->me_lfd = INVALID_HANDLE_VALUE;
e->me_mfd = INVALID_HANDLE_VALUE;
e->me_pid = getpid();
VGMEMP_CREATE(e,0,0);
*env = e;
return MDB_SUCCESS;
@ -3255,7 +3257,7 @@ mdb_env_close(MDB_env *env)
close(env->me_mfd);
close(env->me_fd);
if (env->me_txns) {
pid_t pid = getpid();
pid_t pid = env->me_pid;
unsigned int i;
for (i=0; i<env->me_txns->mti_numreaders; i++)
if (env->me_txns->mti_readers[i].mr_pid == pid)