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authorRobert Schiele <rschiele@gmail.com>2014-09-08 09:38:52 +0200
committerJens Axboe <axboe@fb.com>2014-09-08 08:15:58 -0600
commit838361c6cfb1319eadd59daaf9074dcdb92746e6 (patch)
tree7d9329ee8d218e8e58b7b985df2389fddad4b496 /blktrace.c
parentce9ded7165b846598b28107ceb2864ae1ad4b652 (diff)
downloadblktrace-838361c6cfb1319eadd59daaf9074dcdb92746e6.tar.gz
blktrace-838361c6cfb1319eadd59daaf9074dcdb92746e6.tar.bz2
signal condition variable at end of stop_tracers
stop_tracers modifies tp->is_done and thus must signal the condition variable tracer_wait_unblock is waiting on to monitor tp->is_done. Not doing so might cause the tool to deadlock if stop_tracers is called while a tracer thread is in tracer_wait_unblock. Signed-off-by: Robert Schiele <rschiele@gmail.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'blktrace.c')
-rw-r--r--blktrace.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/blktrace.c b/blktrace.c
index 7e64c94..3c8fb4c 100644
--- a/blktrace.c
+++ b/blktrace.c
@@ -1913,6 +1913,7 @@ static void stop_tracers(void)
struct tracer *tp = list_entry(p, struct tracer, head);
tp->is_done = 1;
}
+ pthread_cond_broadcast(&mt_cond);
}
static void del_tracers(void)