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mdbx: не считаем ошибки ipc-unlock критичными в случае смены pid.

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This commit is contained in:
Леонид Юрьев (Leonid Yuriev) 2023-11-10 15:30:40 +03:00
parent a3e2300f58
commit 54efb8bd81
3 changed files with 33 additions and 20 deletions
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2
src/core.c
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@ -13552,7 +13552,7 @@ __cold int mdbx_env_create(MDBX_env **penv) {
#if MDBX_LOCKING > MDBX_LOCKING_SYSV
MDBX_lockinfo *const stub = lckless_stub(env);
rc = osal_ipclock_stub(&stub->mti_wlock);
rc = osal_ipclock_stubinit(&stub->mti_wlock);
#endif /* MDBX_LOCKING */
if (unlikely(rc != MDBX_SUCCESS)) {
osal_fastmutex_destroy(&env->me_remap_guard);

2
src/internals.h
View File

@ -817,7 +817,7 @@ typedef sem_t osal_ipclock_t;
#endif /* MDBX_LOCKING */
#if MDBX_LOCKING > MDBX_LOCKING_SYSV && !defined(__cplusplus)
MDBX_INTERNAL_FUNC int osal_ipclock_stub(osal_ipclock_t *ipc);
MDBX_INTERNAL_FUNC int osal_ipclock_stubinit(osal_ipclock_t *ipc);
MDBX_INTERNAL_FUNC int osal_ipclock_destroy(osal_ipclock_t *ipc);
#endif /* MDBX_LOCKING */

49
src/lck-posix.c
View File

@ -294,7 +294,7 @@ MDBX_INTERNAL_FUNC int osal_rpid_check(MDBX_env *env, uint32_t pid) {
/*---------------------------------------------------------------------------*/
#if MDBX_LOCKING > MDBX_LOCKING_SYSV
MDBX_INTERNAL_FUNC int osal_ipclock_stub(osal_ipclock_t *ipc) {
MDBX_INTERNAL_FUNC int osal_ipclock_stubinit(osal_ipclock_t *ipc) {
#if MDBX_LOCKING == MDBX_LOCKING_POSIX1988
return sem_init(ipc, false, 1) ? errno : 0;
#elif MDBX_LOCKING == MDBX_LOCKING_POSIX2001 || \
@ -796,7 +796,7 @@ bailout:
#endif /* MDBX_LOCKING > 0 */
}
__cold static int mdbx_ipclock_failed(MDBX_env *env, osal_ipclock_t *ipc,
__cold static int osal_ipclock_failed(MDBX_env *env, osal_ipclock_t *ipc,
const int err) {
int rc = err;
#if MDBX_LOCKING == MDBX_LOCKING_POSIX2008 || MDBX_LOCKING == MDBX_LOCKING_SYSV
@ -918,29 +918,42 @@ static int osal_ipclock_lock(MDBX_env *env, osal_ipclock_t *ipc,
#endif /* MDBX_LOCKING */
if (unlikely(rc != MDBX_SUCCESS && rc != MDBX_BUSY))
rc = mdbx_ipclock_failed(env, ipc, rc);
rc = osal_ipclock_failed(env, ipc, rc);
return rc;
}
int osal_ipclock_unlock(MDBX_env *env, osal_ipclock_t *ipc) {
int err = MDBX_ENOSYS;
#if MDBX_LOCKING == MDBX_LOCKING_POSIX2001 || \
MDBX_LOCKING == MDBX_LOCKING_POSIX2008
int rc = pthread_mutex_unlock(ipc);
(void)env;
err = pthread_mutex_unlock(ipc);
#elif MDBX_LOCKING == MDBX_LOCKING_POSIX1988
int rc = sem_post(ipc) ? errno : MDBX_SUCCESS;
(void)env;
err = sem_post(ipc) ? errno : MDBX_SUCCESS;
#elif MDBX_LOCKING == MDBX_LOCKING_SYSV
if (unlikely(*ipc != (pid_t)env->me_pid))
return EPERM;
*ipc = 0;
struct sembuf op = {.sem_num = (ipc != &env->me_lck->mti_wlock),
.sem_op = 1,
.sem_flg = SEM_UNDO};
int rc = semop(env->me_sysv_ipc.semid, &op, 1) ? errno : MDBX_SUCCESS;
err = EPERM;
else {
*ipc = 0;
struct sembuf op = {.sem_num = (ipc != &env->me_lck->mti_wlock),
.sem_op = 1,
.sem_flg = SEM_UNDO};
err = semop(env->me_sysv_ipc.semid, &op, 1) ? errno : MDBX_SUCCESS;
}
#else
#error "FIXME"
#endif /* MDBX_LOCKING */
int rc = err;
if (unlikely(rc != MDBX_SUCCESS)) {
const uint32_t current_pid = osal_getpid();
if (current_pid == env->me_pid || LOG_ENABLED(MDBX_LOG_NOTICE))
debug_log((current_pid == env->me_pid)
? MDBX_LOG_FATAL
: (rc = MDBX_SUCCESS, MDBX_LOG_NOTICE),
"ipc-unlock()", __LINE__, "failed: env %p, lck-%s %p, err %d\n",
__Wpedantic_format_voidptr(env),
(env->me_lck == env->me_lck_mmap.lck) ? "mmap" : "stub",
__Wpedantic_format_voidptr(env->me_lck), err);
}
return rc;
}
@ -954,10 +967,10 @@ MDBX_INTERNAL_FUNC int osal_rdt_lock(MDBX_env *env) {
MDBX_INTERNAL_FUNC void osal_rdt_unlock(MDBX_env *env) {
TRACE("%s", ">>");
int rc = osal_ipclock_unlock(env, &env->me_lck->mti_rlock);
TRACE("<< rc %d", rc);
if (unlikely(rc != MDBX_SUCCESS))
mdbx_panic("%s() failed: err %d\n", __func__, rc);
int err = osal_ipclock_unlock(env, &env->me_lck->mti_rlock);
TRACE("<< err %d", err);
if (unlikely(err != MDBX_SUCCESS))
mdbx_panic("%s() failed: err %d\n", __func__, err);
jitter4testing(true);
}
@ -974,7 +987,7 @@ int osal_txn_lock(MDBX_env *env, bool dont_wait) {
env->me_txn0->mt_owner = osal_thread_self();
rc = MDBX_SUCCESS;
}
TRACE("<< rc %d", err);
TRACE("<< err %d, rc %d", err, rc);
return rc;
}