forked from xuos/xiuos
70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2020 AIIT XUOS Lab
|
|
* XiUOS is licensed under Mulan PSL v2.
|
|
* You can use this software according to the terms and conditions of the Mulan PSL v2.
|
|
* You may obtain a copy of Mulan PSL v2 at:
|
|
* http://license.coscl.org.cn/MulanPSL2
|
|
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
|
|
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
|
|
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
|
|
* See the Mulan PSL v2 for more details.
|
|
*/
|
|
/**
|
|
* @file sys_wait_session.c
|
|
* @brief
|
|
* @version 3.0
|
|
* @author AIIT XUOS Lab
|
|
* @date 2023.08.25
|
|
*/
|
|
|
|
/*************************************************
|
|
File name: sys_poll_session.c
|
|
Description: server poll its connected sessions
|
|
Others:
|
|
History:
|
|
1. Date: 2023-08-28
|
|
Author: AIIT XUOS Lab
|
|
Modification:
|
|
1. first version
|
|
*************************************************/
|
|
#include "multicores.h"
|
|
#include "share_page.h"
|
|
|
|
#include "syscall.h"
|
|
|
|
extern bool ksemaphore_wait(struct XiziSemaphorePool* sem_pool, struct Thread* thd, sem_id_t sem_id);
|
|
int sys_wait_session(struct Session* userland_session)
|
|
{
|
|
struct Thread* cur_task = cur_cpu()->task;
|
|
|
|
RbtNode* client_session_node = rbt_search(&cur_task->cli_sess_map, userland_session->id);
|
|
if (client_session_node == NULL) {
|
|
ERROR("Error waiting session from %s: Invalid session %d\n", cur_task->name, userland_session->id);
|
|
sys_exit(cur_task);
|
|
return -1;
|
|
}
|
|
|
|
struct client_session* client_session = (struct client_session*)client_session_node->data;
|
|
if (CLIENT_SESSION_BACKEND(client_session)->session_id != userland_session->id || //
|
|
client_session->buf_addr != (uintptr_t)userland_session->buf) {
|
|
sys_exit(cur_task);
|
|
ERROR("Error waiting session from %s: Invalid session %d\n", cur_task->name, userland_session->id);
|
|
return -1;
|
|
}
|
|
|
|
/* handle calling */
|
|
struct session_backend* session_backend = CLIENT_SESSION_BACKEND(client_session);
|
|
struct Thread* server_to_call = session_backend->server;
|
|
if (!enqueue(&server_to_call->sessions_to_be_handle, 0, (void*)&session_backend->server_side)) {
|
|
sys_exit(cur_task);
|
|
return -1;
|
|
}
|
|
assert(!queue_is_empty(&server_to_call->sessions_to_be_handle));
|
|
|
|
ksemaphore_wait(&xizi_task_manager.semaphore_pool, cur_task, session_backend->client_sem_to_wait);
|
|
if (server_to_call->state == BLOCKED) {
|
|
xizi_task_manager.task_unblock(session_backend->server);
|
|
}
|
|
|
|
return 0;
|
|
} |