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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2025-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
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Component */
/** */
/** Transmission Control Protocol (TCP) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#include "nx_tcp.h"
#include "tx_thread.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_tcp_socket_thread_resume PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function resumes a thread suspended on a TCP service within */
/* NetX. */
/* */
/* INPUT */
/* */
/* thread_ptr Pointer to thread to resume */
/* status Return status */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _tx_thread_system_resume Resume suspended thread */
/* */
/* CALLED BY */
/* */
/* _nx_tcp_client_socket_unbind Client socket unbind */
/* processing */
/* _nx_tcp_socket_connection_reset Received reset processing */
/* _nx_tcp_socket_state_closing Socket state closing */
/* processing */
/* _nx_tcp_socket_state_data_check Socket data check processing */
/* _nx_tcp_socket_state_fin_wait2 Socket FIN wait-2 processing */
/* _nx_tcp_socket_state_fin_wait1 Socket FIN wait-1 processing */
/* _nx_tcp_socket_state_last_ack Socket last ack processing */
/* _nx_tcp_socket_state_syn_received Socket SYN received */
/* processing */
/* _nx_tcp_socket_state_syn_sent Socket SYN sent processing */
/* _nx_tcp_socket_state_transmit_check Socket transmit check */
/* processing */
/* */
/**************************************************************************/
VOID _nx_tcp_socket_thread_resume(TX_THREAD **suspension_list_head, UINT status)
{
TX_INTERRUPT_SAVE_AREA
TX_THREAD *thread_ptr;
/* Disable interrupts. */
TX_DISABLE
/* Pickup the thread pointer. */
thread_ptr = *suspension_list_head;
/* Determine if there still is a thread suspended. */
if (thread_ptr)
{
/* Determine if there are anymore threads on the suspension list. */
if (thread_ptr == thread_ptr -> tx_thread_suspended_next)
{
/* Only this thread is on the suspension list. Simply set the
list head to NULL to reflect an empty suspension list. */
*suspension_list_head = TX_NULL;
}
else
{
/* More than one thread is on the suspension list, we need to
adjust the link pointers and move the next entry to the
front of the list. */
*suspension_list_head = thread_ptr -> tx_thread_suspended_next;
/* Update the links of the adjacent threads. */
(thread_ptr -> tx_thread_suspended_next) -> tx_thread_suspended_previous =
thread_ptr -> tx_thread_suspended_previous;
(thread_ptr -> tx_thread_suspended_previous) -> tx_thread_suspended_next =
thread_ptr -> tx_thread_suspended_next;
}
/* Prepare for resumption of the thread. */
/* Clear cleanup routine to avoid timeout. */
thread_ptr -> tx_thread_suspend_cleanup = TX_NULL;
/* Temporarily disable preemption. */
_tx_thread_preempt_disable++;
/* Restore interrupts. */
TX_RESTORE
/* Put return status into the thread control block. */
thread_ptr -> tx_thread_suspend_status = status;
/* Resume thread. */
_tx_thread_system_resume(thread_ptr);
}
else
{
/* Nothing was suspended. Simply restore interrupts. */
TX_RESTORE
}
}
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