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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* Copyright (c) 2026-present Eclipse ThreadX contributors |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** USBX Component */ |
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/** */ |
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/** Utility */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/* Include necessary system files. */ |
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#define UX_SOURCE_CODE |
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#include "ux_api.h" |
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#if !defined(UX_STANDALONE) |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _ux_utility_semaphore_get PORTABLE C */ |
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/* 6.1.11 */ |
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/* AUTHOR */ |
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/* */ |
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/* Chaoqiong Xiao, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function gets a semaphore signal. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* semaphore Semaphore to get signal from */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* Completion Status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* tx_thread_identify ThreadX identify thread */ |
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/* tx_thread_info_get ThreadX get thread info */ |
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/* tx_semaphore_get ThreadX semaphore get */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* USBX Components */ |
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/* */ |
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/**************************************************************************/ |
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219589 |
UINT _ux_utility_semaphore_get(UX_SEMAPHORE *semaphore, ULONG semaphore_signal) |
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{ |
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UINT status; |
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UX_THREAD *my_thread; |
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CHAR *name; |
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UINT state; |
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ULONG run_count; |
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UINT priority; |
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UINT preemption_threshold; |
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ULONG time_slice; |
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UX_THREAD *next_thread; |
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UX_THREAD *suspended_thread; |
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/* Call TX to know my own tread. */ |
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my_thread = tx_thread_identify(); |
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/* Retrieve information about the previously created thread "my_thread." */ |
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tx_thread_info_get(my_thread, &name, &state, &run_count, |
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&priority, &preemption_threshold, |
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&time_slice, &next_thread,&suspended_thread); |
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/* Is this the lowest priority thread in the system trying to use TX services ? */ |
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✓✓ |
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if (priority > _ux_system -> ux_system_thread_lowest_priority) |
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{ |
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/* We need to remember this thread priority. */ |
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_ux_system -> ux_system_thread_lowest_priority = priority; |
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} |
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/* Get ThreadX semaphore instance. */ |
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status = tx_semaphore_get(semaphore, semaphore_signal); |
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/* Return completion status. */ |
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218601 |
return(status); |
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} |
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#endif |