Unix98 pthread_rwlock* stubs for glibc2.2 compatibility.

scheduler/pthread.c

diff --git a/scheduler/pthread.c b/scheduler/pthread.c
index 124432a..706813b 100644
--- a/scheduler/pthread.c
+++ b/scheduler/pthread.c
@@ -8,6 +8,7 @@
  */
 
 #include "config.h"
+#define _GNU_SOURCE /* we may need to override some GNU extensions */
 
 #include <assert.h>
 #include <errno.h>
@@ -394,6 +395,85 @@
   return 0;
 }
 
+#if (__GLIBC__ == 2) && (__GLIBC_MINOR__ >= 2)
+/***** READ-WRITE LOCKS *****/
+/* not implemented right now */
+
+int __pthread_rwlock_init(pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *rwlock_attr)
+{
+  P_OUTPUT("FIXME:pthread_rwlock_init\n");
+  return 0;
+}
+strong_alias(__pthread_rwlock_init, pthread_rwlock_init);
+
+int __pthread_rwlock_destroy(pthread_rwlock_t *rwlock)
+{
+  P_OUTPUT("FIXME:pthread_rwlock_destroy\n");
+  return 0;
+}
+strong_alias(__pthread_rwlock_destroy, pthread_rwlock_destroy);
+
+int __pthread_rwlock_rdlock(pthread_rwlock_t *rwlock)
+{
+  P_OUTPUT("FIXME:pthread_rwlock_rdlock\n");
+  return 0;
+}
+strong_alias(__pthread_rwlock_rdlock, pthread_rwlock_rdlock);
+
+int __pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock)
+{
+  P_OUTPUT("FIXME:pthread_rwlock_tryrdlock\n");
+  return 0;
+}
+strong_alias(__pthread_rwlock_tryrdlock, pthread_rwlock_tryrdlock);
+
+int __pthread_rwlock_wrlock(pthread_rwlock_t *rwlock)
+{
+  P_OUTPUT("FIXME:pthread_wrlock_rdlock\n");
+  return 0;
+}
+strong_alias(__pthread_rwlock_wrlock, pthread_rwlock_wrlock);
+
+int __pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock)
+{
+  P_OUTPUT("FIXME:pthread_rwlock_trywrlock\n");
+  return 0;
+}
+strong_alias(__pthread_rwlock_trywrlock, pthread_rwlock_trywrlock);
+
+int __pthread_rwlock_unlock(pthread_rwlock_t *rwlock)
+{
+  P_OUTPUT("FIXME:pthread_rwlock_unlock\n");
+  return 0;
+}
+strong_alias(__pthread_rwlock_unlock, pthread_rwlock_unlock);
+
+/**** READ-WRITE LOCK ATTRIBUTES *****/
+/* not implemented right now */
+
+int pthread_rwlockattr_init(pthread_rwlockattr_t *attr)
+{
+  return 0;
+}
+
+int __pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr)
+{
+  return 0;
+}
+strong_alias(__pthread_rwlockattr_destroy, pthread_rwlockattr_destroy);
+
+int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t *attr, int *pref)
+{
+  *pref = 0;
+  return 0;
+}
+
+int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t *attr, int pref)
+{
+  return 0;
+}
+#endif /* glibc 2.2 */
+
 /***** MISC *****/
 
 pthread_t pthread_self(void)