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Release 6.1.7

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This commit is contained in:
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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100
utility/rtos_compatibility_layers/posix/px_sem_getvalue.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 "px_int.h" /* Posix helper functions */
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* sem_getvalue PORTABLE C */
/* 6.x */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This routine updates the location referenced by the sval argument */
/* to have the value of the semaphore referenced by sem without */
/* affecting the state of the semaphore */
/* */
/* INPUT */
/* */
/* *sem pointer to Semaphore. */
/* *sval Buffer by which the value is returned. */
/* */
/* OUTPUT */
/* */
/* OK If successful */
/* ERROR IF fails */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* xx-xx-xxxx William E. Lamie Initial Version 6.x */
/* */
/**************************************************************************/
INT sem_getvalue(sem_t * sem,ULONG * sval)
{
TX_INTERRUPT_SAVE_AREA
TX_SEMAPHORE *TheSem;
/* get ThreadX semaphore. */
TheSem = (TX_SEMAPHORE *)sem;
/* First, check for an invalid semaphore pointer. */
if ((!TheSem) || (TheSem -> tx_semaphore_id != TX_SEMAPHORE_ID))
{
/* Return appropriate error. */
posix_errno=EINVAL;
posix_set_pthread_errno(EINVAL);
/* Return Error. */
return(EINVAL);
}
/* Disable interrupts. */
TX_DISABLE
* sval = TheSem ->tx_semaphore_count;
/* Restore Interrupts. */
TX_RESTORE
return(OK);
}