Xenomai  3.0.8
taskLib.h
1 /*
2  * Copyright (C) 2008 Philippe Gerum <rpm@xenomai.org>.
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13 
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
17  */
18 
19 #ifndef _VXWORKS_TASKLIB_H
20 #define _VXWORKS_TASKLIB_H
21 
22 #include <copperplate/threadobj.h>
23 #include <copperplate/registry.h>
24 #include <copperplate/cluster.h>
25 #include <vxworks/taskLib.h>
26 
27 struct wind_task_args {
28  FUNCPTR entry;
29  long arg0;
30  long arg1;
31  long arg2;
32  long arg3;
33  long arg4;
34  long arg5;
35  long arg6;
36  long arg7;
37  long arg8;
38  long arg9;
39 };
40 
41 struct wind_task {
42  pthread_mutex_t safelock;
43  struct WIND_TCB *tcb;
44  struct WIND_TCB priv_tcb;
45  char name[XNOBJECT_NAME_LEN];
46  struct wind_task_args args;
47  struct threadobj thobj;
48  struct fsobj fsobj;
49  struct clusterobj cobj;
50  struct pvholder next;
51 };
52 
53 #define do_each_wind_task(__task, __action) \
54  ({ \
55  __label__ out; \
56  int __ret; \
57  push_cleanup_lock(&wind_task_lock); \
58  read_lock(&wind_task_lock); \
59  if (!pvlist_empty(&wind_task_list)) \
60  pvlist_for_each_entry(__task, &wind_task_list, next) { \
61  threadobj_lock(&(__task)->thobj); \
62  __ret = (__action); \
63  if (__ret == -EIDRM) \
64  continue; \
65  threadobj_unlock(&(__task)->thobj); \
66  if (__ret) \
67  goto out; \
68  } \
69  read_unlock(&wind_task_lock); \
70  pop_cleanup_lock(&wind_task_lock); \
71  out: \
72  __ret; \
73  })
74 
75 int wind_task_get_priority(struct wind_task *task);
76 
77 #define task_magic 0x1a2b3c4d
78 
79 static inline struct wind_task *wind_task_current(void)
80 {
81  struct threadobj *thobj = threadobj_current();
82 
83  if (thobj == NULL ||
84  threadobj_get_magic(thobj) != task_magic)
85  return NULL;
86 
87  return container_of(thobj, struct wind_task, thobj);
88 }
89 
90 struct wind_task *get_wind_task(TASK_ID tid);
91 
92 struct wind_task *get_wind_task_or_self(TASK_ID tid);
93 
94 void put_wind_task(struct wind_task *task);
95 
96 int get_task_status(struct wind_task *task);
97 
98 extern struct cluster wind_task_table;
99 
100 extern struct pvlistobj wind_task_list;
101 
102 extern pthread_mutex_t wind_task_lock;
103 
104 extern int wind_time_slice;
105 
106 #endif /* _VXWORKS_TASKLIB_H */