thread.h

Go to the documentation of this file.
00001 #ifndef _SYS_THREAD_H_
00002 #define _SYS_THREAD_H_
00003 
00004 /*
00005  * Copyright (C) 2001-2006 by egnite Software GmbH. All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  *
00011  * 1. Redistributions of source code must retain the above copyright
00012  *    notice, this list of conditions and the following disclaimer.
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in the
00015  *    documentation and/or other materials provided with the distribution.
00016  * 3. Neither the name of the copyright holders nor the names of
00017  *    contributors may be used to endorse or promote products derived
00018  *    from this software without specific prior written permission.
00019  *
00020  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00021  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00022  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00023  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00024  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00025  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00026  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00027  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00028  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00029  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00030  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00031  * SUCH DAMAGE.
00032  *
00033  * For additional information see http://www.ethernut.de/
00034  *
00035  * -
00036  * Portions Copyright (C) 2000 David J. Hudson <dave@humbug.demon.co.uk>
00037  *
00038  * This file is distributed in the hope that it will be useful, but WITHOUT
00039  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00040  * FITNESS FOR A PARTICULAR PURPOSE.
00041  *
00042  * You can redistribute this file and/or modify it under the terms of the GNU
00043  * General Public License (GPL) as published by the Free Software Foundation;
00044  * either version 2 of the License, or (at your discretion) any later version.
00045  * See the accompanying file "copying-gpl.txt" for more details.
00046  *
00047  * As a special exception to the GPL, permission is granted for additional
00048  * uses of the text contained in this file.  See the accompanying file
00049  * "copying-liquorice.txt" for details.
00050  */
00051 
00131 #include <sys/types.h>
00132 #include <cfg/memory.h>
00133 
00134 #define DEADBEEF    0xDEADBEEF
00135 
00136 
00141 
00145 typedef struct _NUTTHREADINFO NUTTHREADINFO;
00146 
00154 struct _NUTTHREADINFO {
00155     NUTTHREADINFO *td_next;     
00156     NUTTHREADINFO *td_qnxt;     
00157     volatile u_int td_qpec;     
00158     char td_name[9];            
00159     u_char td_state;            
00160     uptr_t td_sp;               
00161     u_char td_priority;         
00162     u_char *td_memory;          
00163     HANDLE td_timer;            
00164     volatile HANDLE td_queue;   
00165 #if defined (__APPLE__) || defined(__linux__) || defined(__CYGWIN__)
00166     pthread_t td_pthread;       
00167     void (*td_fn) (void *);     
00168     void *td_arg;               
00169     pthread_cond_t td_cv;       
00170     u_short td_cs_level;        
00171 #endif
00172 };
00179 #define TDS_TERM        0       
00180 #define TDS_RUNNING     1       
00181 #define TDS_READY       2       
00182 #define TDS_SLEEP       3       
00184 
00185 #define SLEEP_MODE_NONE 0xff
00186 
00187 extern NUTTHREADINFO *runningThread;
00188 extern NUTTHREADINFO *nutThreadList;
00189 extern NUTTHREADINFO *runQueue;
00190 
00191 __BEGIN_DECLS
00192 /* Function prototypes. */
00193 #if defined (__APPLE__) || defined(__linux__) || defined(__CYGWIN__)
00194 extern void NutThreadInit(void);
00195 #endif
00196 
00197 #if defined(__GNUC__) && defined (__AVR_ENHANCED__)
00198 extern u_char NutThreadSetSleepMode(u_char mode);
00199 #endif
00200 
00201 extern HANDLE NutThreadCreate(char *name, void (*fn) (void *), void *arg, size_t stackSize);
00202 extern u_char NutThreadSetPriority(u_char level);
00203 
00204 extern void NutThreadKill(void);
00205 extern void NutThreadDestroy(void);
00206 extern void NutThreadExit(void);
00207 
00208 extern void NutThreadResume(void);
00209 extern void NutThreadWake(HANDLE timer, HANDLE th);
00210 extern void NutThreadYield(void);
00211 
00212 extern void NutThreadAddPriQueue(NUTTHREADINFO * td, NUTTHREADINFO * volatile *tqpp);
00213 extern void NutThreadRemoveQueue(NUTTHREADINFO * td, NUTTHREADINFO * volatile *tqpp);
00214 
00215 extern void NutThreadSwitch(void);
00216 extern HANDLE GetThreadByName(char *name);
00217 
00221 #define THREAD(threadfn, arg) \
00222 void threadfn(void *arg) __attribute__ ((noreturn)); \
00223 void threadfn(void *arg)
00224 
00225 __END_DECLS
00226 /* */
00227 #endif

© 2000-2007 by egnite Software GmbH - visit http://www.ethernut.de/