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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2026-present Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** 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 */
/* */
/* pthread_cond_init PORTABLE C */
/* 6.1.7 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function shall initialize the condition variable referenced by */
/* cond with attributes referenced by attr. If attr is NULL,the default*/
/* condition variable attributes shall be used; the effect is the same */
/* as passing the address of a default condition variable attributes */
/* object. Upon successful initialization, the state of the condition */
/* variable shall become initialized. */
/* */
/* INPUT */
/* */
/* Nothing */
/* */
/* OUTPUT */
/* */
/* cond condition variable object */
/* attr attributes */
/* */
/* CALLS */
/* */
/* tx_semaphore_create create a semaphore internal to */
/* cond variable */
/* CALLED BY */
/* */
/* Application Code */
/* */
/**************************************************************************/
INT pthread_cond_init(pthread_cond_t *cond, pthread_condattr_t *attr)
{
TX_SEMAPHORE *semaphore_ptr;
UINT status;
cond->in_use = TX_TRUE;
/* Get the condition variable's internal semaphore. */
/* Simply convert the COndition variable control block into a semaphore a cast */
semaphore_ptr = (&( cond->cond_semaphore ));
/* Now create the internal semaphore for this cond variable */
status = tx_semaphore_create(semaphore_ptr,"csem",0);
if (status != TX_SUCCESS)
{
posix_errno = EINVAL;
posix_set_pthread_errno(EINVAL);
return(EINVAL);
}
else
return(OK);
}
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