mirror of
https://github.com/eclipse-threadx/threadx.git
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108 lines
5.3 KiB
C
108 lines
5.3 KiB
C
/***************************************************************************
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* Copyright (c) 2024 Microsoft Corporation
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*
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* This program and the accompanying materials are made available under the
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* terms of the MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** POSIX wrapper for THREADX */
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/** */
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/** */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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/* Include necessary system files. */
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#include "tx_api.h" /* Threadx API */
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#include "pthread.h" /* Posix API */
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#include "px_int.h" /* Posix helper functions */
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* pthread_mutex_unlock PORTABLE C */
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/* 6.1.7 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This function shall release the mutex object referenced by mutex. */
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/* The manner in which a mutex is released is dependent upon the mutex */
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/* type attribute. If there are threads blocked on the mutex object */
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/* referenced by mutex when pthread_mutex_unlock() is called,resulting */
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/* in the mutex becoming available,the scheduling policy shall */
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/* determine which thread shall acquire the mutex. */
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/* */
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/* INPUT */
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/* */
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/* mutex Address of the mutex */
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/* */
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/* OUTPUT */
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/* */
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/* 0 if successful */
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/* Value in case of any error */
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/* */
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/* CALLS */
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/* */
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/* tx_mutex_put ThreadX Mutex service */
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/* */
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/* CALLED BY */
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/* */
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/* Application Code */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
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/* */
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/**************************************************************************/
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INT pthread_mutex_unlock(pthread_mutex_t *mutex )
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{
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TX_MUTEX *mutex_ptr;
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INT retval,status;
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/* convert pthread mutex object to ThreadX mutex */
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mutex_ptr = (TX_MUTEX*)mutex;
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status = tx_mutex_put( mutex_ptr);
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switch ( status)
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{
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case TX_SUCCESS:
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retval = OK;
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break;
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case TX_MUTEX_ERROR:
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posix_errno = EINVAL;
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posix_set_pthread_errno(EINVAL);
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retval = EINVAL;
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break;
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case TX_NOT_OWNED:
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posix_errno = EPERM;
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posix_set_pthread_errno(EPERM);
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retval = EPERM;
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break;
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default:
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posix_errno = EINVAL;
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posix_set_pthread_errno(EINVAL);
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retval = EINVAL;
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break;
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}
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return (retval);
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}
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