ISAR/libmdbx
3
0
Fork 0
mirror of https://github.com/isar/libmdbx.git synced 2025-10-19 22:39:04 +08:00
Code Issues Packages Projects Releases Wiki Activity

mdbx: fix/rework mdbx_reader_check().

Browse Source
This commit is contained in:
Leo Yuriev
2017-04-21 18:26:32 +03:00
parent 1b490fda24
commit c2087f186e
4 changed files with 79 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/lck-posix.c
View File

@@ -171,6 +171,12 @@ int mdbx_rpid_clear(MDB_env *env) {
return mdbx_lck_op(env->me_lfd, F_SETLKW, F_UNLCK, env->me_pid);
}
/* Checks reader by pid.
*
* Returns:
* MDBX_RESULT_TRUE, if pid is live (unable to acquire lock)
* MDBX_RESULT_FALSE, if pid is dead (lock acquired)
* or otherwise the errcode. */
int mdbx_rpid_check(MDB_env *env, mdbx_pid_t pid) {
int rc = mdbx_lck_op(env->me_lfd, F_GETLK, F_WRLCK, pid);
if (rc == 0)
@@ -205,7 +211,7 @@ static int __cold mdbx_mutex_failed(MDB_env *env, mdbx_mutex_t *mutex, int rc) {
int rlocked, rc2;
/* We own the mutex. Clean up after dead previous owner. */
rc = MDB_SUCCESS;
rc = MDBX_RESULT_TRUE;
rlocked = (mutex == &env->me_txns->mti_rmutex);
if (!rlocked) {
/* Keep mtb.mti_txnid updated, otherwise next writer can