EVE 1.0
subprocess.h
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1 /*
2  * Copyright (c) 2006, Swedish Institute of Computer Science.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * This file is part of the Contiki operating system.
30  *
31  */
32 
33 /**
34  * \file
35  * Subprocesses for Contiki
36  * \author
37  * Adam Dunkels <adam@sics.se>
38  */
39 
40 #ifndef SUBPROCESS_H_
41 #define SUBPROCESS_H_
42 
43 /**
44  * \defgroup subprocess Contiki subprocesses
45  * \ingroup sys
46  * \{
47  *
48  * A Contiki subprocess is a "process-in-a-process".
49  */
50 
51 #define SUBPROCESS_BEGIN(strname) \
52 { \
53  static struct process subprocess_subprocess = {NULL, strname}; \
54  subprocess_subprocess.thread = PROCESS_CURRENT()->thread; \
55  process_start(&subprocess_subprocess, NULL); \
56  PT_INIT(&subprocess_subprocess.pt); \
57  LC_SET(subprocess_subprocess.pt.lc); \
58  if(PROCESS_CURRENT() == &subprocess_subprocess) {
59 
60 #define SUBPROCESS_END() \
61  PROCESS_EXIT(); \
62  } \
63 }
64 
65 /** \} */
66 
67 #endif /* SUBPROCESS_H_ */