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2020-05-11 08:55:07 -06:00
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common/src/tx_semaphore_info_get.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. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Semaphore */
/** */
/**************************************************************************/
/**************************************************************************/
#define TX_SOURCE_CODE
/* Include necessary system files. */
#include "tx_api.h"
#include "tx_trace.h"
#include "tx_semaphore.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_semaphore_info_get PORTABLE C */
/* 6.0 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function retrieves information from the specified semaphore. */
/* */
/* INPUT */
/* */
/* semaphore_ptr Pointer to semaphore control block*/
/* name Destination for the semaphore name*/
/* current_value Destination for current value of */
/* the semaphore */
/* first_suspended Destination for pointer of first */
/* thread suspended on semaphore */
/* suspended_count Destination for suspended count */
/* next_semaphore Destination for pointer to next */
/* semaphore on the created list */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 William E. Lamie Initial Version 6.0 */
/* */
/**************************************************************************/
UINT _tx_semaphore_info_get(TX_SEMAPHORE *semaphore_ptr, CHAR **name, ULONG *current_value,
TX_THREAD **first_suspended, ULONG *suspended_count,
TX_SEMAPHORE **next_semaphore)
{
TX_INTERRUPT_SAVE_AREA
/* Disable interrupts. */
TX_DISABLE
/* If trace is enabled, insert this event into the trace buffer. */
TX_TRACE_IN_LINE_INSERT(TX_TRACE_SEMAPHORE_INFO_GET, semaphore_ptr, 0, 0, 0, TX_TRACE_SEMAPHORE_EVENTS)
/* Log this kernel call. */
TX_EL_SEMAPHORE_INFO_GET_INSERT
/* Retrieve all the pertinent information and return it in the supplied
destinations. */
/* Retrieve the name of the semaphore. */
if (name != TX_NULL)
{
*name = semaphore_ptr -> tx_semaphore_name;
}
/* Retrieve the current value of the semaphore. */
if (current_value != TX_NULL)
{
*current_value = semaphore_ptr -> tx_semaphore_count;
}
/* Retrieve the first thread suspended on this semaphore. */
if (first_suspended != TX_NULL)
{
*first_suspended = semaphore_ptr -> tx_semaphore_suspension_list;
}
/* Retrieve the number of threads suspended on this semaphore. */
if (suspended_count != TX_NULL)
{
*suspended_count = (ULONG) semaphore_ptr -> tx_semaphore_suspended_count;
}
/* Retrieve the pointer to the next semaphore created. */
if (next_semaphore != TX_NULL)
{
*next_semaphore = semaphore_ptr -> tx_semaphore_created_next;
}
/* Restore interrupts. */
TX_RESTORE
/* Return completion status. */
return(TX_SUCCESS);
}