/* * Semaphore Manager * * DESCRIPTION: * * This package is the implementation of the Semaphore Manager. * This manager utilizes standard Dijkstra counting semaphores to provide * synchronization and mutual exclusion capabilities. * * Directives provided are: * * + create a semaphore * + get an ID of a semaphore * + delete a semaphore * + acquire a semaphore * + release a semaphore * * COPYRIGHT (c) 1989-1999. * On-Line Applications Research Corporation (OAR). * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.rtems.com/license/LICENSE. * * $Id$ */ #if HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(RTEMS_MULTIPROCESSING) #include #endif #include #include /* * rtems_semaphore_ident * * This directive returns the system ID associated with * the semaphore name. * * Input parameters: * name - user defined semaphore name * node - node(s) to be searched * id - pointer to semaphore id * * Output parameters: * *id - semaphore id * RTEMS_SUCCESSFUL - if successful * error code - if unsuccessful */ rtems_status_code rtems_semaphore_ident( rtems_name name, uint32_t node, rtems_id *id ) { Objects_Name_or_id_lookup_errors status; status = _Objects_Name_to_id_u32( &_Semaphore_Information, name, node, id ); return _Status_Object_name_errors_to_status[ status ]; }