diff options
| author | Renato Westphal <renato@opensourcerouting.org> | 2019-04-03 16:31:18 -0300 |
|---|---|---|
| committer | Renato Westphal <renato@opensourcerouting.org> | 2019-04-26 18:04:22 -0300 |
| commit | 83981138fe8c1e0a40b8dede74eca65449dda5de (patch) | |
| tree | cd22f38c39e38eb1fb9f0dd7354fe19480523fba /lib/northbound.h | |
| parent | 364ad673c885d741d575e97dbae70bf6d7c8f36e (diff) | |
lib: introduce a read-write lock for northbound configurations
The upcoming gRPC-based northbound plugin will run on a separate
pthread, and it will need to have access to the running configuration
global variable. Introduce a rw-lock to control concurrent access
to the running configuration. Add the lock inside the "nb_config"
structure so that it can be used to protect candidate configurations
as well (this might be necessary depending on the threading scheme
of future northbound plugins).
Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
Diffstat (limited to 'lib/northbound.h')
| -rw-r--r-- | lib/northbound.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/northbound.h b/lib/northbound.h index dca33b905f..909bb08ebe 100644 --- a/lib/northbound.h +++ b/lib/northbound.h @@ -422,8 +422,19 @@ enum nb_client { /* Northbound configuration. */ struct nb_config { + /* Configuration data. */ struct lyd_node *dnode; + + /* Configuration version. */ uint32_t version; + + /* + * Lock protecting this structure. The use of this lock is always + * necessary when reading or modifying the global running configuration. + * For candidate configurations, use of this lock is optional depending + * on the threading scheme of the northbound plugin. + */ + pthread_rwlock_t lock; }; /* Northbound configuration callback. */ |