1 /* 2 * Copyright (c) 2001-2003 Swedish Institute of Computer Science. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without modification, 6 * are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 25 * OF SUCH DAMAGE. 26 * 27 * This file is part of the lwIP TCP/IP stack. 28 * 29 * Author: Adam Dunkels <adam@sics.se> 30 * 31 */ 32 #ifndef __ARCH_SYS_ARCH_H__ 33 #define __ARCH_SYS_ARCH_H__ 34 35 #include <errno.h> 36 37 #define SYS_MBOX_NULL NULL 38 #define SYS_SEM_NULL NULL 39 40 typedef u32_t sys_prot_t; 41 42 struct sys_sem; 43 typedef struct sys_sem * sys_sem_t; 44 #define sys_sem_valid(sem) (((sem) != NULL) && (*(sem) != NULL)) 45 #define sys_sem_set_invalid(sem) do { if((sem) != NULL) { *(sem) = NULL; }}while(0) 46 47 /* let sys.h use binary semaphores for mutexes */ 48 #define LWIP_COMPAT_MUTEX 1 49 50 struct sys_mbox; 51 typedef struct sys_mbox *sys_mbox_t; 52 #define sys_mbox_valid(mbox) (((mbox) != NULL) && (*(mbox) != NULL)) 53 #define sys_mbox_set_invalid(mbox) do { if((mbox) != NULL) { *(mbox) = NULL; }}while(0) 54 55 struct sys_thread; 56 typedef struct sys_thread * sys_thread_t; 57 58 #endif /* __ARCH_SYS_ARCH_H__ */ 59 60