-extern guchar *_wapi_shm_file (_wapi_shm_t type, guint32 segment);
-extern gpointer _wapi_shm_file_map (_wapi_shm_t type, guint32 segment,
- gboolean *created);
-extern gpointer _wapi_shm_file_expand (gpointer mem, _wapi_shm_t type,
- guint32 segment, guint32 old_len,
- guint32 new_len);
-extern gboolean _wapi_shm_attach (struct _WapiHandleShared_list **data,
- struct _WapiHandleScratch **scratch);
-extern void _wapi_shm_destroy (void);
+extern gboolean _wapi_shm_disabled;
+
+extern gpointer _wapi_shm_attach (_wapi_shm_t type);
+extern void _wapi_shm_detach (_wapi_shm_t type);
+extern gboolean _wapi_shm_enabled (void);
+extern void _wapi_shm_semaphores_init (void);
+extern void _wapi_shm_semaphores_remove (void);
+extern int _wapi_shm_sem_lock (int sem);
+extern int _wapi_shm_sem_trylock (int sem);
+extern int _wapi_shm_sem_unlock (int sem);