summaryrefslogtreecommitdiffstats
path: root/Modules/_multiprocessing/multiprocessing.h
blob: 0759a80e44bfa29d691731a0c186b3dfbf52b662 (plain)
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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
#ifndef MULTIPROCESSING_H
#define MULTIPROCESSING_H

#define PY_SSIZE_T_CLEAN

#include "Python.h"
#include "structmember.h"
#include "pythread.h"

/*
 * Platform includes and definitions
 */

#ifdef MS_WINDOWS
#  define WIN32_LEAN_AND_MEAN
#  include <windows.h>
#  include <winsock2.h>
#  include <process.h>               /* getpid() */
#  ifdef Py_DEBUG
#    include <crtdbg.h>
#  endif
#  define SEM_HANDLE HANDLE
#  define SEM_VALUE_MAX LONG_MAX
#else
#  include <fcntl.h>                 /* O_CREAT and O_EXCL */
#  if defined(HAVE_SEM_OPEN) && !defined(POSIX_SEMAPHORES_NOT_ENABLED)
#    include <semaphore.h>
     typedef sem_t *SEM_HANDLE;
#  endif
#  define HANDLE int
#  define SOCKET int
#  define BOOL int
#  define UINT32 uint32_t
#  define INT32 int32_t
#  define TRUE 1
#  define FALSE 0
#  define INVALID_HANDLE_VALUE (-1)
#endif

/*
 * Issue 3110 - Solaris does not define SEM_VALUE_MAX
 */
#ifndef SEM_VALUE_MAX
    #if defined(HAVE_SYSCONF) && defined(_SC_SEM_VALUE_MAX)
        # define SEM_VALUE_MAX sysconf(_SC_SEM_VALUE_MAX)
    #elif defined(_SEM_VALUE_MAX)
        # define SEM_VALUE_MAX _SEM_VALUE_MAX
    #elif defined(_POSIX_SEM_VALUE_MAX)
        # define SEM_VALUE_MAX _POSIX_SEM_VALUE_MAX
    #else
        # define SEM_VALUE_MAX INT_MAX
    #endif
#endif


/*
 * Format codes
 */

#if SIZEOF_VOID_P == SIZEOF_LONG
#  define F_POINTER "k"
#  define T_POINTER T_ULONG
#elif defined(HAVE_LONG_LONG) && (SIZEOF_VOID_P == SIZEOF_LONG_LONG)
#  define F_POINTER "K"
#  define T_POINTER T_ULONGLONG
#else
#  error "can't find format code for unsigned integer of same size as void*"
#endif

#ifdef MS_WINDOWS
#  define F_HANDLE F_POINTER
#  define T_HANDLE T_POINTER
#  define F_SEM_HANDLE F_HANDLE
#  define T_SEM_HANDLE T_HANDLE
#  define F_DWORD "k"
#  define T_DWORD T_ULONG
#else
#  define F_HANDLE "i"
#  define T_HANDLE T_INT
#  define F_SEM_HANDLE F_POINTER
#  define T_SEM_HANDLE T_POINTER
#endif

/*
 * Error codes which can be returned by functions called without GIL
 */

#define MP_SUCCESS (0)
#define MP_STANDARD_ERROR (-1)
#define MP_MEMORY_ERROR (-1001)
#define MP_SOCKET_ERROR (-1002)
#define MP_EXCEPTION_HAS_BEEN_SET (-1003)

PyObject *_PyMp_SetError(PyObject *Type, int num);

/*
 * Externs - not all will really exist on all platforms
 */

extern PyTypeObject _PyMp_SemLockType;

/*
 * Miscellaneous
 */

#ifndef MIN
#  define MIN(x, y) ((x) < (y) ? x : y)
#  define MAX(x, y) ((x) > (y) ? x : y)
#endif

#endif /* MULTIPROCESSING_H */