virtio: fix txq locking

[vpp.git] / src / vppinfra / lock.h

diff --git a/src/vppinfra/lock.h b/src/vppinfra/lock.h
index 3cfe11c..470890b 100644 (file)
--- a/src/vppinfra/lock.h
+++ b/src/vppinfra/lock.h
@@ -91,6 +91,15 @@ clib_spinlock_lock (clib_spinlock_t * p)
   CLIB_LOCK_DBG (p);
 }
 
+static_always_inline int
+clib_spinlock_trylock (clib_spinlock_t * p)
+{
+  if (PREDICT_FALSE (CLIB_SPINLOCK_IS_LOCKED (p)))
+    return 0;
+  clib_spinlock_lock (p);
+  return 1;
+}
+
 static_always_inline void
 clib_spinlock_lock_if_init (clib_spinlock_t * p)
 {
@@ -98,6 +107,14 @@ clib_spinlock_lock_if_init (clib_spinlock_t * p)
     clib_spinlock_lock (p);
 }
 
+static_always_inline int
+clib_spinlock_trylock_if_init (clib_spinlock_t * p)
+{
+  if (PREDICT_FALSE (*p != 0))
+    return clib_spinlock_trylock (p);
+  return 1;
+}
+
 static_always_inline void
 clib_spinlock_unlock (clib_spinlock_t * p)
 {