Xenomai  3.0.8
internal.h
1 /*
2  * Copyright (C) 2011 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 _ALCHEMY_INTERNAL_H
20 #define _ALCHEMY_INTERNAL_H
21 
22 #include "boilerplate/ancillaries.h"
23 #include "boilerplate/namegen.h"
24 #include "timer.h"
25 
26 #define DEFINE_SYNC_LOOKUP(__name, __dsctype) \
27 static inline struct alchemy_ ## __name * \
28 get_alchemy_ ## __name(__dsctype *desc, \
29  struct syncstate *syns, int *err_r) \
30 { \
31  struct alchemy_ ## __name *cb; \
32  \
33  if (bad_pointer(desc)) { \
34  *err_r = -EINVAL; \
35  return NULL; \
36  } \
37  \
38  cb = mainheap_deref(desc->handle, struct alchemy_ ## __name); \
39  if (bad_pointer(cb)) { \
40  *err_r = -EINVAL; \
41  return NULL; \
42  } \
43  \
44  if (syncobj_lock(&cb->sobj, syns) || \
45  cb->magic != __name ## _magic) { \
46  *err_r = -EINVAL; \
47  return NULL; \
48  } \
49  \
50  return cb; \
51 } \
52  \
53 static inline \
54 void put_alchemy_ ## __name(struct alchemy_ ## __name *cb, \
55  struct syncstate *syns) \
56 { \
57  syncobj_unlock(&cb->sobj, syns); \
58 }
59 
60 #define __DEFINE_LOOKUP(__scope, __name, __dsctype) \
61 __scope struct alchemy_ ## __name * \
62 find_alchemy_ ## __name(__dsctype *desc, int *err_r) \
63 { \
64  struct alchemy_ ## __name *cb; \
65  \
66  if (bad_pointer(desc)) { \
67  *err_r = -EINVAL; \
68  return NULL; \
69  } \
70  \
71  cb = mainheap_deref(desc->handle, struct alchemy_ ## __name); \
72  if (bad_pointer(cb) || cb->magic != __name ## _magic) { \
73  *err_r = -EINVAL; \
74  return NULL; \
75  } \
76  \
77  return cb; \
78 } \
79 
80 #define DEFINE_LOOKUP_PRIVATE(__name, __dsctype) \
81  __DEFINE_LOOKUP(static inline, __name, __dsctype)
82 
83 #define DEFINE_LOOKUP(__name, __dsctype) \
84  __DEFINE_LOOKUP(, __name, __dsctype)
85 
86 struct syncluster;
87 
88 int alchemy_bind_object(const char *name, struct syncluster *sc,
89  RTIME timeout,
90  int offset,
91  uintptr_t *handle);
92 
93 #endif /* !_ALCHEMY_INTERNAL_H */