lib/uklock: Add static initializer for uk_rwlock

Signed-off-by: Andrei Tatar <andrei@unikraft.io>
Reviewed-by: Simon Kuenzer <simon@unikraft.io>
Approved-by: Simon Kuenzer <simon@unikraft.io>
GitHub-Closes: #1126

diff --git a/lib/uklock/include/uk/rwlock.h b/lib/uklock/include/uk/rwlock.h
index 0ceee2645de9e8534d4bcf596989a43ff8e15fe1..140ed7689bc8e54c2c086b2e8d269e58e49e8eb4 100644 (file)
--- a/lib/uklock/include/uk/rwlock.h
+++ b/lib/uklock/include/uk/rwlock.h
@@ -54,6 +54,17 @@ void uk_rwlock_init_config(struct uk_rwlock *rwl, unsigned int config_flags);
 
 #define uk_rwlock_init(rwl) uk_rwlock_init_config(rwl, 0)
 
+#define UK_RWLOCK_INITIALIZER(name, flags) \
+       ((struct uk_rwlock){ \
+               .nactive = 0, \
+               .npending_reads = 0, \
+               .npending_writes = 0, \
+               .config_flags = flags, \
+               .sl = UK_SPINLOCK_INITIALIZER(), \
+               .shared = UK_WAIT_QUEUE_INITIALIZER((name).shared), \
+               .exclusive = UK_WAIT_QUEUE_INITIALIZER((name).exclusive), \
+       })
+
 /**
  * Acquire the reader-writer lock for reading. Multiple readers can
  * acquire the lock at the same time