forked from xuos/xiuos
89 lines
3.4 KiB
C
89 lines
3.4 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_exit.c
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* @brief task exit syscall
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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_exit.c
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Description: task exit syscall
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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 "trap_common.h"
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#include "actracer.h"
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#include "assert.h"
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#include "list.h"
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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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int sys_exit(struct TaskMicroDescriptor* ptask)
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{
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assert(ptask != NULL);
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/* handle sessions for condition 1, ref. delete_share_pages() */
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// close all server_sessions
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struct server_session* server_session = NULL;
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while (!IS_DOUBLE_LIST_EMPTY(&ptask->svr_sess_listhead)) {
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server_session = CONTAINER_OF(ptask->svr_sess_listhead.next, struct server_session, node);
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// cut the connection from task to session
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if (!server_session->closed) {
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xizi_share_page_manager.unmap_task_share_pages(ptask, server_session->buf_addr, CLIENT_SESSION_BACKEND(server_session)->nr_pages);
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server_session->closed = true;
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}
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doubleListDel(&server_session->node);
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SERVER_SESSION_BACKEND(server_session)->server = NULL;
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// delete session (also cut connection from session to task)
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if (SERVER_SESSION_BACKEND(server_session)->client_side.closed) {
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xizi_share_page_manager.delete_share_pages(SERVER_SESSION_BACKEND(server_session));
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}
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}
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// close all client_sessions
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struct client_session* client_session = NULL;
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while (!IS_DOUBLE_LIST_EMPTY(&ptask->cli_sess_listhead)) {
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client_session = CONTAINER_OF(ptask->cli_sess_listhead.next, struct client_session, node);
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// cut the connection from task to session
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if (!client_session->closed) {
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xizi_share_page_manager.unmap_task_share_pages(ptask, client_session->buf_addr, CLIENT_SESSION_BACKEND(client_session)->nr_pages);
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client_session->closed = true;
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}
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doubleListDel(&client_session->node);
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CLIENT_SESSION_BACKEND(client_session)->client = NULL;
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// delete session (also cut connection from session to task)
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if (CLIENT_SESSION_BACKEND(client_session)->server_side.closed) {
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xizi_share_page_manager.delete_share_pages(CLIENT_SESSION_BACKEND(client_session));
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}
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}
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if (ptask->server_identifier.meta != NULL) {
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struct TraceTag server_identifier_owner;
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AchieveResourceTag(&server_identifier_owner, RequireRootTag(), "softkernel/server-identifier");
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assert(server_identifier_owner.meta != NULL);
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DeleteResource(&ptask->server_identifier, &server_identifier_owner);
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}
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// delete task for pcb_list
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xizi_task_manager.task_yield_noschedule(ptask, true);
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ptask->state = DEAD;
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return 0;
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} |