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authordimitri staessens <dimitri.staessens@ugent.be>2017-03-29 13:11:49 +0200
committerdimitri staessens <dimitri.staessens@ugent.be>2017-03-29 13:11:49 +0200
commit3896a4d3e8634470557ea72ded70e7d9e33b7741 (patch)
tree7e5714b5be41b8ebda807fcca71d084dcf1b9234 /src
parent99b9bd5273e6f7bbbaf4973ef15977ac7056b02d (diff)
downloadouroboros-3896a4d3e8634470557ea72ded70e7d9e33b7741.tar.gz
ouroboros-3896a4d3e8634470557ea72ded70e7d9e33b7741.zip
lib: Fix locks in dev.c
Diffstat (limited to 'src')
-rw-r--r--src/lib/dev.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/src/lib/dev.c b/src/lib/dev.c
index bd706dc8..79797b92 100644
--- a/src/lib/dev.c
+++ b/src/lib/dev.c
@@ -1394,6 +1394,7 @@ int ipcp_flow_read(int fd,
{
ssize_t idx = -1;
int port_id = -1;
+ struct shm_rbuff * rb;
pthread_rwlock_rdlock(&ai.data_lock);
pthread_rwlock_rdlock(&ai.flows_lock);
@@ -1404,22 +1405,19 @@ int ipcp_flow_read(int fd,
return -ENOTALLOC;
}
+ rb = ai.flows[fd].rx_rb;
+
pthread_rwlock_unlock(&ai.flows_lock);
pthread_rwlock_unlock(&ai.data_lock);
- idx = shm_rbuff_read(ai.flows[fd].rx_rb);
- if (idx < 0) {
- pthread_rwlock_rdlock(&ai.data_lock);
- pthread_rwlock_rdlock(&ai.flows_lock);
+ idx = shm_rbuff_read(rb);
+ if (idx < 0)
return idx;
- }
pthread_rwlock_rdlock(&ai.data_lock);
- pthread_rwlock_rdlock(&ai.flows_lock);
*sdb = shm_rdrbuff_get(ai.rdrb, idx);
- pthread_rwlock_unlock(&ai.flows_lock);
pthread_rwlock_unlock(&ai.data_lock);
return 0;