* [PATCH] replication: fix assertion in relay_cancel()
@ 2018-08-17 13:59 Serge Petrenko
2018-08-17 15:06 ` Vladimir Davydov
0 siblings, 1 reply; 2+ messages in thread
From: Serge Petrenko @ 2018-08-17 13:59 UTC (permalink / raw)
To: vdavydov.dev; +Cc: georgy, kostja, tarantool-patches, Serge Petrenko
If relay thread is already exiting (but hadn't executed relay_stop()
yet) and relay_cancel() is called we may encounter an error trying to
call pthread_cancel() after the thread has exited. Handle this case.
Follow-up #3485
---
https://github.com/tarantool/tarantool/issues/3485
https://github.com/tarantool/tarantool/tree/sp/relay-cancel-fix
src/box/relay.cc | 3 ++-
src/tt_pthread.h | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/box/relay.cc b/src/box/relay.cc
index b9919ea86..138e66dd5 100644
--- a/src/box/relay.cc
+++ b/src/box/relay.cc
@@ -203,7 +203,8 @@ relay_cancel(struct relay *relay)
{
/* Check that the thread is running first. */
if (relay->cord.id != 0) {
- tt_pthread_cancel(relay->cord.id);
+ if (tt_pthread_cancel(relay->cord.id) == ESRCH)
+ return;
tt_pthread_join(relay->cord.id, NULL);
}
}
diff --git a/src/tt_pthread.h b/src/tt_pthread.h
index d83694460..40b43b112 100644
--- a/src/tt_pthread.h
+++ b/src/tt_pthread.h
@@ -279,7 +279,8 @@
#define tt_pthread_cancel(thread) \
({ int e__ = pthread_cancel(thread); \
- tt_pthread_error(e__); \
+ assert(e__ == 0 || e__ == ESRCH); \
+ e__; \
})
#define tt_pthread_key_create(key, dtor) \
--
2.15.2 (Apple Git-101.1)
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