1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* nbdkit
* Copyright Red Hat
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Red Hat nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef NBDKIT_OCAML_PLUGIN_H
#define NBDKIT_OCAML_PLUGIN_H
#include <caml/version.h>
/* Replacement if caml_alloc_initialized_string is missing, added
* to OCaml runtime in 2017.
*/
#ifndef HAVE_CAML_ALLOC_INITIALIZED_STRING
static inline value
caml_alloc_initialized_string (mlsize_t len, const char *p)
{
value sv = caml_alloc_string (len);
memcpy ((char *) String_val (sv), p, len);
return sv;
}
#endif
/* To debug all runtime acquire/release, uncomment this section. */
#if 0
#define do_caml_acquire_runtime_system() \
do { \
nbdkit_debug ("caml_acquire_runtime_system"); \
caml_acquire_runtime_system (); \
} while (0)
#define do_caml_release_runtime_system() \
do { \
nbdkit_debug ("caml_release_runtime_system"); \
caml_release_runtime_system (); \
} while (0)
#else
#define do_caml_acquire_runtime_system() caml_acquire_runtime_system()
#define do_caml_release_runtime_system() caml_release_runtime_system()
#endif
/* For functions which call into OCaml code, call
* caml_acquire_runtime_system ... caml_release_runtime_system around
* the code. This prevents other threads in the same domain running.
* The macro ensures that the calls are paired properly.
*/
#define ACQUIRE_RUNTIME_FOR_CURRENT_SCOPE() \
__attribute__ ((unused, cleanup (cleanup_release_runtime_system))) \
int _unused; \
do_caml_acquire_runtime_system ()
static inline void
cleanup_release_runtime_system (int *unused)
{
do_caml_release_runtime_system ();
}
#endif /* NBDKIT_OCAML_PLUGIN_H */
|
