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Release 6.1.7

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Bo Chen
2021-06-02 06:45:05 +00:00
parent d759e6bb9e
commit f5056f4923
1269 changed files with 57325 additions and 55178 deletions
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98
utility/rtos_compatibility_layers/posix/px_sem_init.c Normal file
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/**************************************************************************/
/* */
/* 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 "tx_posix.h" /* Posix API */
#include "px_int.h" /* Posix helper functions */
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* sem_init PORTABLE C */
/* 6.x */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function initializes a nameless sempaphore. */
/* */
/* INPUT */
/* */
/* sem Semaphore pointer */
/* pshared Shared semphore (TRUE/FALSE) */
/* value Initial value */
/* */
/* OUTPUT */
/* */
/* EINVAL if error occurs */
/* NO_ERROR successful */
/* */
/* CALLS */
/* */
/* tx_semaphore_create creates actual THreadx semaphore */
/* */
/* CALLED BY */
/* */
/* POSIX internal Code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* xx-xx-xxxx William E. Lamie Initial Version 6.x */
/* */
/**************************************************************************/
INT sem_init(sem_t *sem , INT pshared, UINT value)
{
INT result;
if((sem==NULL)||(value > SEM_VALUE_MAX)||(sem->in_use==TX_TRUE))
{
result = EINVAL; /* general error */
}
else
{
if(tx_semaphore_create(&(sem->sem),"",value)) result = EINVAL;
else
{ /* initialize semaphore fields */
sem->count = 0;
sem->in_use = TX_TRUE;
sem->psemId = 0;
sem->refCnt = value;
sem->sem_name = "";
sem->unlink_flag =TX_FALSE;
result = NO_ERROR;
}
}
return result;
}