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
|
/* 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_PYTHON_PLUGIN_H
#define NBDKIT_PYTHON_PLUGIN_H
/* Include these headers from one place because we have to make sure
* we always set these #defines identically before inclusion.
*/
#define PY_SSIZE_T_CLEAN 1
#include <Python.h>
#define NBDKIT_API_VERSION 2
#include <nbdkit-plugin.h>
/* All callbacks that want to call any Py* function should use this
* macro. See
* https://docs.python.org/3/c-api/init.html#non-python-created-threads
*/
#define ACQUIRE_PYTHON_GIL_FOR_CURRENT_SCOPE \
__attribute__ ((cleanup (cleanup_release))) \
CLANG_UNUSED_VARIABLE_WORKAROUND \
PyGILState_STATE gstate = PyGILState_Ensure ()
static inline void
cleanup_release (PyGILState_STATE *gstateptr)
{
PyGILState_Release (*gstateptr);
}
extern const char *script;
extern PyObject *module;
extern int py_api_version;
extern __thread int last_error;
/* helpers.c */
extern int callback_defined (const char *name, PyObject **obj_rtn);
extern char *python_to_string (PyObject *str);
/* errors.c */
extern int check_python_failure (const char *callback);
/* modfunctions.c */
extern PyMODINIT_FUNC create_nbdkit_module (void);
#endif /* NBDKIT_PYTHON_PLUGIN_H */
|
