diff options
| -rw-r--r-- | src/backend/storage/ipc/shm_mq.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/backend/storage/ipc/shm_mq.c b/src/backend/storage/ipc/shm_mq.c index 61f9298489d..1d0657f3858 100644 --- a/src/backend/storage/ipc/shm_mq.c +++ b/src/backend/storage/ipc/shm_mq.c @@ -501,10 +501,12 @@ shm_mq_receive(shm_mq_handle *mqh, Size *nbytesp, void **datap, bool nowait) { if (nowait) { - if (shm_mq_counterparty_gone(mq, mqh->mqh_handle)) - return SHM_MQ_DETACHED; if (shm_mq_get_sender(mq) == NULL) + { + if (shm_mq_counterparty_gone(mq, mqh->mqh_handle)) + return SHM_MQ_DETACHED; return SHM_MQ_WOULD_BLOCK; + } } else if (!shm_mq_wait_internal(mq, &mq->mq_sender, mqh->mqh_handle) && shm_mq_get_sender(mq) == NULL) |