Belongs in the include directory

libraries/liblthread/rdwr.h

-/********************************************************
- * An example source module to accompany...
- *
- * "Using POSIX Threads: Programming with Pthreads"
- *     by Brad nichols, Dick Buttlar, Jackie Farrell
- *     O'Reilly & Associates, Inc.
- *
- ********************************************************
- * rdwr.h --
- * 
- * Include file for reader/writer locks
- */
-typedef struct rdwr_var {
-	int readers_reading;
-	int writer_writing;
-	pthread_mutex_t mutex;
-	pthread_cond_t lock_free;
-} pthread_rdwr_t;
-
-typedef void * pthread_rdwrattr_t;
-
-#define pthread_rdwrattr_default NULL;
-
-int pthread_rdwr_init_np(pthread_rdwr_t *rdwrp, pthread_rdwrattr_t *attrp);
-int pthread_rdwr_rlock_np(pthread_rdwr_t *rdwrp);
-int pthread_rdwr_runlock_np(pthread_rdwr_t *rdwrp);
-int pthread_rdwr_wlock_np(pthread_rdwr_t *rdwrp);
-int pthread_rdwr_wunlock_np(pthread_rdwr_t *rdwrp);