--- /dev/null
+/*
+ * Copyright (c) 2013 Nicira, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __CHECKER__
+#error "Use this header only with sparse. It is not a correct implementation."
+#endif
+
+/* Get actual <pthread.h> definitions for us to annotate and build on. */
+#include_next <pthread.h>
+
+#include "compiler.h"
+
+int pthread_mutex_lock(pthread_mutex_t *mutex) OVS_ACQUIRES(mutex);
+int pthread_mutex_unlock(pthread_mutex_t *mutex) OVS_RELEASES(mutex);
+
+int pthread_rwlock_rdlock(pthread_rwlock_t *rwlock) OVS_ACQUIRES(rwlock);
+int pthread_rwlock_wrlock(pthread_rwlock_t *rwlock) OVS_ACQUIRES(rwlock);
+int pthread_rwlock_unlock(pthread_rwlock_t *rwlock) OVS_RELEASES(rwlock);
+
+int pthread_cond_wait(pthread_cond_t *, pthread_mutex_t *mutex)
+ OVS_MUST_HOLD(mutex);
+
+#define pthread_mutex_trylock(MUTEX) \
+ ({ \
+ int retval = pthread_mutex_trylock(mutex); \
+ if (!retval) { \
+ OVS_ACQUIRE(MUTEX); \
+ } \
+ retval; \
+ })
+
+#define pthread_rwlock_tryrdlock(RWLOCK) \
+ ({ \
+ int retval = pthread_rwlock_tryrdlock(rwlock); \
+ if (!retval) { \
+ OVS_ACQUIRE(RWLOCK); \
+ } \
+ retval; \
+ })
+#define pthread_rwlock_trywrlock(RWLOCK) \
+ ({ \
+ int retval = pthread_rwlock_trywrlock(rwlock); \
+ if (!retval) { \
+ OVS_ACQUIRE(RWLOCK); \
+ } \
+ retval; \
+ })