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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [itron/] [src/] [cre_mbf.c] - Rev 778
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/* * ITRON Message Buffer Manager * * 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.OARcorp.com/rtems/license.html. * * $Id: cre_mbf.c,v 1.2 2001-09-27 11:59:13 chris Exp $ */ #include <itron.h> #include <rtems/itron/msgbuffer.h> #include <rtems/itron/task.h> /* * cre_mbf - Create MessageBuffer */ ER cre_mbf( ID mbfid, T_CMBF *pk_cmbf ) { CORE_message_queue_Attributes the_msgq_attributes; ITRON_Message_buffer_Control *the_message_buffer; /* * Bad pointer to the attributes structure */ if ( !pk_cmbf ) return E_PAR; /* * Bits were set that were note defined. */ if (pk_cmbf->mbfatr & ~(TA_TPRI)) return E_RSATR; if (pk_cmbf->bufsz < 0 || pk_cmbf->maxmsz < 0) return E_PAR; if (pk_cmbf->bufsz < pk_cmbf->maxmsz) return E_PAR; _Thread_Disable_dispatch(); /* prevents deletion */ the_message_buffer = _ITRON_Message_buffer_Allocate(mbfid); if ( !the_message_buffer ) { _Thread_Enable_dispatch(); return _ITRON_Message_buffer_Clarify_allocation_id_error(mbfid); } if ( pk_cmbf->mbfatr & TA_TPRI ) the_msgq_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY; else the_msgq_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_FIFO; _CORE_message_queue_Initialize( &the_message_buffer->message_queue, OBJECTS_ITRON_MESSAGE_BUFFERS, &the_msgq_attributes, pk_cmbf->bufsz / pk_cmbf->maxmsz, pk_cmbf->maxmsz, NULL /* Multiprocessing not supported */ ); _ITRON_Objects_Open( &_ITRON_Message_buffer_Information, &the_message_buffer->Object ); /* * If multiprocessing were supported, this is where we would announce * the existence of the semaphore to the rest of the system. */ #if defined(RTEMS_MULTIPROCESSING) #endif _Thread_Enable_dispatch(); return E_OK; }
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