diff options
| author | Ethan Jackson <ethan@nicira.com> | 2013-07-30 15:31:48 -0700 |
|---|---|---|
| committer | Ben Pfaff <blp@nicira.com> | 2013-07-30 21:30:45 -0700 |
| commit | 97be153858b4cd175cbe7862b8e1624bf22ab98a (patch) | |
| tree | ab1e518bef4e8bbc97fe8a069d9b91541bb9c4d4 /lib/netdev-dummy.c | |
| parent | 2b51596fdeba7fbf4caff323dd6af375e7f84596 (diff) | |
clang: Add annotations for thread safety check.
This commit adds annotations for thread safety check. And the
check can be conducted by using -Wthread-safety flag in clang.
Co-authored-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Diffstat (limited to 'lib/netdev-dummy.c')
| -rw-r--r-- | lib/netdev-dummy.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/lib/netdev-dummy.c b/lib/netdev-dummy.c index 82473a17..c4f58b7a 100644 --- a/lib/netdev-dummy.c +++ b/lib/netdev-dummy.c @@ -241,16 +241,11 @@ static int netdev_dummy_create(const struct netdev_class *class, const char *name, struct netdev **netdevp) { - static unsigned int next_n = 0xaa550000; - static pthread_mutex_t mutex = PTHREAD_ADAPTIVE_MUTEX_INITIALIZER; - + static atomic_uint next_n = ATOMIC_VAR_INIT(0xaa550000); struct netdev_dummy *netdev; unsigned int n; - xpthread_mutex_lock(&mutex); - n = next_n++; - xpthread_mutex_unlock(&mutex); - + atomic_add(&next_n, 1, &n); netdev = xzalloc(sizeof *netdev); netdev_init(&netdev->up, name, class); netdev->hwaddr[0] = 0xaa; |