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124 lines
3.1 KiB
C
124 lines
3.1 KiB
C
///////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT NOTICE
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//
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// The following open source license statement does not apply to any
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// entity in the Exception List published by FMSoft.
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//
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// For more information, please visit:
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//
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// https://www.fmsoft.cn/exception-list
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//
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//////////////////////////////////////////////////////////////////////////////
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/*
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* This file is part of MiniGUI, a mature cross-platform windowing
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* and Graphics User Interface (GUI) support system for embedded systems
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* and smart IoT devices.
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*
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* Copyright (C) 2002~2020, Beijing FMSoft Technologies Co., Ltd.
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* Copyright (C) 1998~2002, WEI Yongming
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Or,
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*
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* As this program is a library, any link to this program must follow
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* GNU General Public License version 3 (GPLv3). If you cannot accept
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* GPLv3, you need to be licensed from FMSoft.
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*
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* If you have got a commercial license of this program, please use it
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* under the terms and conditions of the commercial license.
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*
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* For more information about the commercial license, please refer to
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* <http://www.minigui.com/blog/minigui-licensing-policy/>.
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*/
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/*
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** drawsemop.c: operations for drawing semaphore.
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**
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** NOTE THAT THIS FILE IS DEPRECATED.
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**
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** Current maintainer: Wei Yongming.
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**
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** Create date: 2000/12/31
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/un.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include "common.h"
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#include "minigui.h"
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#include "ourhdr.h"
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#include "sharedres.h"
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#include "drawsemop.h"
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#define SEM_TIMEOUT 500
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void __misc_unlock_draw_sem (void)
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{
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struct sembuf sb;
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again:
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sb.sem_num = 0;
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sb.sem_op = 1;
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sb.sem_flg = SEM_UNDO;
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if (semop (SHAREDRES_SEMID, &sb, 1) == -1) {
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if (errno == EINTR) {
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goto again;
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}
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}
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}
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void __misc_lock_draw_sem (void)
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{
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struct sembuf sb;
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again:
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sb.sem_num = 0;
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sb.sem_op = -1;
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sb.sem_flg = SEM_UNDO;
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if (semop (SHAREDRES_SEMID, &sb, 1) == -1) {
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if (errno == EINTR) {
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goto again;
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}
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}
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}
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#ifdef _MGHAVE_CURSOR
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void __misc_inc_hidecursor_sem (void)
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{
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struct sembuf sb;
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again:
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sb.sem_num = 2;
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sb.sem_op = 1;
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sb.sem_flg = 0;
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if (semop (SHAREDRES_SEMID, &sb, 1) == -1) {
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if (errno == EINTR) {
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goto again;
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}
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}
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}
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#endif /* _MGHAVE_CURSOR */
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