mirror of
https://github.com/eclipse-threadx/threadx.git
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142 lines
6.7 KiB
C
142 lines
6.7 KiB
C
/**************************************************************************/
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/* */
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/* Copyright (c) Microsoft Corporation. All rights reserved. */
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/* */
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/* This software is licensed under the Microsoft Software License */
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/* Terms for Microsoft Azure RTOS. Full text of the license can be */
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/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
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/* and in the root directory of this software. */
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/* */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** ThreadX Component */
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/** */
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/** Semaphore */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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#define TX_SOURCE_CODE
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/* Include necessary system files. */
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#include "tx_api.h"
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#include "tx_trace.h"
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#include "tx_semaphore.h"
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* _tx_semaphore_info_get PORTABLE C */
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/* 6.1 */
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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 retrieves information from the specified semaphore. */
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/* */
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/* INPUT */
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/* */
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/* semaphore_ptr Pointer to semaphore control block*/
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/* name Destination for the semaphore name*/
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/* current_value Destination for current value of */
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/* the semaphore */
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/* first_suspended Destination for pointer of first */
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/* thread suspended on semaphore */
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/* suspended_count Destination for suspended count */
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/* next_semaphore Destination for pointer to next */
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/* semaphore on the created list */
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/* */
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/* OUTPUT */
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/* */
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/* status Completion status */
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/* */
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/* CALLS */
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/* */
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/* None */
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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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/* 05-19-2020 William E. Lamie Initial Version 6.0 */
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/* 09-30-2020 Yuxin Zhou Modified comment(s), */
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/* resulting in version 6.1 */
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/* */
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/**************************************************************************/
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UINT _tx_semaphore_info_get(TX_SEMAPHORE *semaphore_ptr, CHAR **name, ULONG *current_value,
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TX_THREAD **first_suspended, ULONG *suspended_count,
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TX_SEMAPHORE **next_semaphore)
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{
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TX_INTERRUPT_SAVE_AREA
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/* Disable interrupts. */
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TX_DISABLE
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/* If trace is enabled, insert this event into the trace buffer. */
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TX_TRACE_IN_LINE_INSERT(TX_TRACE_SEMAPHORE_INFO_GET, semaphore_ptr, 0, 0, 0, TX_TRACE_SEMAPHORE_EVENTS)
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/* Log this kernel call. */
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TX_EL_SEMAPHORE_INFO_GET_INSERT
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/* Retrieve all the pertinent information and return it in the supplied
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destinations. */
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/* Retrieve the name of the semaphore. */
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if (name != TX_NULL)
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{
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*name = semaphore_ptr -> tx_semaphore_name;
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}
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/* Retrieve the current value of the semaphore. */
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if (current_value != TX_NULL)
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{
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*current_value = semaphore_ptr -> tx_semaphore_count;
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}
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/* Retrieve the first thread suspended on this semaphore. */
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if (first_suspended != TX_NULL)
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{
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*first_suspended = semaphore_ptr -> tx_semaphore_suspension_list;
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}
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/* Retrieve the number of threads suspended on this semaphore. */
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if (suspended_count != TX_NULL)
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{
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*suspended_count = (ULONG) semaphore_ptr -> tx_semaphore_suspended_count;
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}
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/* Retrieve the pointer to the next semaphore created. */
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if (next_semaphore != TX_NULL)
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{
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*next_semaphore = semaphore_ptr -> tx_semaphore_created_next;
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}
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/* Restore interrupts. */
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TX_RESTORE
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/* Return completion status. */
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return(TX_SUCCESS);
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}
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