diff options
| author | Robert Haas | 2015-10-16 13:42:33 +0000 |
|---|---|---|
| committer | Robert Haas | 2015-10-16 13:42:33 +0000 |
| commit | 2ad5c27bb565c26a4b12ea3343331c80f121f269 (patch) | |
| tree | 9e4541141b2ea1870ac1097d40777c20fcbba2ea /src/include/libpq | |
| parent | 3587cbc34fe87e1bde6c202daba791b68e44cb3a (diff) | |
Don't send protocol messages to a shm_mq that no longer exists.
Commit 2bd9e412f92bc6a68f3e8bcb18e04955cc35001d introduced a mechanism
for relaying protocol messages from a background worker to another
backend via a shm_mq. However, there was no provision for shutting
down the communication channel. Therefore, a protocol message sent
late in the shutdown sequence, such as a DEBUG message resulting from
cranking up log_min_messages, could crash the server. To fix, install
an on_dsm_detach callback that disables sending messages to the shm_mq
when the associated DSM is detached.
Diffstat (limited to 'src/include/libpq')
| -rw-r--r-- | src/include/libpq/pqmq.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/libpq/pqmq.h b/src/include/libpq/pqmq.h index 901756596a..97f17da89d 100644 --- a/src/include/libpq/pqmq.h +++ b/src/include/libpq/pqmq.h @@ -16,7 +16,7 @@ #include "lib/stringinfo.h" #include "storage/shm_mq.h" -extern void pq_redirect_to_shm_mq(shm_mq *, shm_mq_handle *); +extern void pq_redirect_to_shm_mq(dsm_segment *seg, shm_mq_handle *mqh); extern void pq_set_parallel_master(pid_t pid, BackendId backend_id); extern void pq_parse_errornotice(StringInfo str, ErrorData *edata); |