mirror of
https://github.com/azure-rtos/threadx
synced 2025-01-30 08:02:57 +08:00
121 lines
5.8 KiB
C
121 lines
5.8 KiB
C
/**************************************************************************/
|
|
/* */
|
|
/* Copyright (c) Microsoft Corporation. All rights reserved. */
|
|
/* */
|
|
/* This software is licensed under the Microsoft Software License */
|
|
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
|
|
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
|
|
/* and in the root directory of this software. */
|
|
/* */
|
|
/**************************************************************************/
|
|
|
|
|
|
/**************************************************************************/
|
|
/**************************************************************************/
|
|
/** */
|
|
/** POSIX wrapper for THREADX */
|
|
/** */
|
|
/** */
|
|
/** */
|
|
/**************************************************************************/
|
|
/**************************************************************************/
|
|
|
|
/* Include necessary system files. */
|
|
|
|
#include "tx_api.h" /* Threadx API */
|
|
#include "pthread.h" /* Posix API */
|
|
#include "px_int.h" /* Posix helper functions */
|
|
|
|
|
|
/**************************************************************************/
|
|
/* */
|
|
/* FUNCTION RELEASE */
|
|
/* */
|
|
/* mq_unlink PORTABLE C */
|
|
/* 6.1.7 */
|
|
/* AUTHOR */
|
|
/* */
|
|
/* William E. Lamie, Microsoft Corporation */
|
|
/* */
|
|
/* DESCRIPTION */
|
|
/* */
|
|
/* This routine removes the named message queue */
|
|
/* */
|
|
/* INPUT */
|
|
/* */
|
|
/* const CHAR * mqName Message Queue name. */
|
|
/* */
|
|
/* OUTPUT */
|
|
/* */
|
|
/* OK If successful */
|
|
/* ERROR IF fails */
|
|
/* */
|
|
/* CALLS */
|
|
/* */
|
|
/* posix_internal_error Generic error handler */
|
|
/* posix_find_queue Finds the required queue */
|
|
/* posix_queue_delete Deletes specific queue */
|
|
/* */
|
|
/* CALLED BY */
|
|
/* */
|
|
/* Application Code */
|
|
/* */
|
|
/* RELEASE HISTORY */
|
|
/* */
|
|
/* DATE NAME DESCRIPTION */
|
|
/* */
|
|
/* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
|
|
/* */
|
|
/**************************************************************************/
|
|
INT mq_unlink(const CHAR * mqName)
|
|
{
|
|
|
|
POSIX_MSG_QUEUE *q_ptr;
|
|
ULONG len;
|
|
ULONG temp1;
|
|
|
|
/* Checking for the invalid length. */
|
|
len = strlen(mqName);
|
|
if(len > 10)
|
|
{
|
|
/* Return appropriate error. */
|
|
posix_errno = ENAMETOOLONG;
|
|
posix_set_pthread_errno(ENAMETOOLONG);
|
|
|
|
/* Return Error. */
|
|
return(ERROR);
|
|
}
|
|
|
|
/* For checking the name. */
|
|
if(!(q_ptr = posix_find_queue(mqName)))
|
|
{
|
|
/* Set Posix error if name exist. */
|
|
posix_errno = EEXIST;
|
|
posix_set_pthread_errno(EEXIST);
|
|
|
|
/* Return error. */
|
|
return(ERROR);
|
|
}
|
|
|
|
if(q_ptr)
|
|
/* Unlinks the message Queue. */
|
|
q_ptr->unlink_flag = TX_TRUE;
|
|
|
|
/* check if the message queue is not open in any task. */
|
|
if(q_ptr->open_count == 0)
|
|
{
|
|
/* Free the system resource allocated by open call. */
|
|
temp1 = posix_queue_delete( q_ptr );
|
|
|
|
if( temp1 != TX_SUCCESS)
|
|
{
|
|
/*. Return generic error. */
|
|
posix_internal_error(100);
|
|
|
|
/* Return error. */
|
|
return(ERROR);
|
|
}
|
|
}
|
|
return(OK);
|
|
}
|