forked from xuos/xiuos
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/*
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* Copyright (c) 2020 AIIT XUOS Lab
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* XiUOS is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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*/
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/**
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* @file sys_yield.c
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* @brief task yield
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* @version 3.0
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* @author AIIT XUOS Lab
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* @date 2023.08.25
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*/
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/*************************************************
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File name: sys_yield.c
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Description: task yield
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Others:
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History:
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1. Date: 2023-08-28
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Author: AIIT XUOS Lab
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Modification:
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1. first version
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*************************************************/
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#include "multicores.h"
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#include "syscall.h"
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#include "task.h"
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#include "assert.h"
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int sys_yield(task_yield_reason reason)
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{
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struct Thread* cur_task = cur_cpu()->task;
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xizi_task_manager.task_yield_noschedule(cur_task, false);
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// handle ipc block
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if ((reason & SYS_TASK_YIELD_BLOCK_IPC) != 0) {
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if (cur_task->current_ipc_handled) {
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cur_task->current_ipc_handled = false;
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} else {
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xizi_task_manager.task_block(&xizi_task_manager.task_blocked_list_head, cur_task);
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}
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}
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// wake up all possible server
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struct client_session* client_session = NULL;
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DOUBLE_LIST_FOR_EACH_ENTRY(client_session, &cur_task->cli_sess_listhead, node)
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{
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assert(client_session != NULL);
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struct session_backend* session_backend = CLIENT_SESSION_BACKEND(client_session);
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if (session_backend->server->state == BLOCKED) {
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xizi_task_manager.task_unblock(session_backend->server);
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}
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}
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return 0;
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} |