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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
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** Utility */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#if !defined(UX_STANDALONE)
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_utility_semaphore_get PORTABLE C */
/* 6.1.11 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function gets a semaphore signal. */
/* */
/* INPUT */
/* */
/* semaphore Semaphore to get signal from */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* tx_thread_identify ThreadX identify thread */
/* tx_thread_info_get ThreadX get thread info */
/* tx_semaphore_get ThreadX semaphore get */
/* */
/* CALLED BY */
/* */
/* USBX Components */
/* */
/**************************************************************************/
UINT _ux_utility_semaphore_get(UX_SEMAPHORE *semaphore, ULONG semaphore_signal)
{
UINT status;
UX_THREAD *my_thread;
CHAR *name;
UINT state;
ULONG run_count;
UINT priority;
UINT preemption_threshold;
ULONG time_slice;
UX_THREAD *next_thread;
UX_THREAD *suspended_thread;
/* Call TX to know my own tread. */
my_thread = tx_thread_identify();
/* Retrieve information about the previously created thread "my_thread." */
tx_thread_info_get(my_thread, &name, &state, &run_count,
&priority, &preemption_threshold,
&time_slice, &next_thread,&suspended_thread);
/* Is this the lowest priority thread in the system trying to use TX services ? */
if (priority > _ux_system -> ux_system_thread_lowest_priority)
{
/* We need to remember this thread priority. */
_ux_system -> ux_system_thread_lowest_priority = priority;
}
/* Get ThreadX semaphore instance. */
status = tx_semaphore_get(semaphore, semaphore_signal);
/* Return completion status. */
return(status);
}
#endif
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