tor  0.4.1.0-alpha-dev
torint.h
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1 /* Copyright (c) 2003, Roger Dingledine
2  * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
3  * Copyright (c) 2007-2019, The Tor Project, Inc. */
4 /* See LICENSE for licensing information */
5 
12 #ifndef TOR_TORINT_H
13 #define TOR_TORINT_H
14 
15 #include "orconfig.h"
16 
17 #include <stdint.h>
18 #include <stdbool.h>
19 #include <limits.h>
20 
21 #ifdef HAVE_SYS_TYPES_H
22 #include <sys/types.h>
23 #endif
24 #ifdef HAVE_SYS_LIMITS_H
25 #include <sys/limits.h>
26 #endif
27 
28 #ifndef SIZE_MAX
29 #if SIZEOF_SIZE_T == 8
30 #define SIZE_MAX UINT64_MAX
31 #elif SIZEOF_SIZE_T == 4
32 #define SIZE_MAX UINT32_MAX
33 #else
34 #error "Can't define SIZE_MAX"
35 #endif /* SIZEOF_SIZE_T == 8 || ... */
36 #endif /* !defined(SIZE_MAX) */
37 
38 #ifndef HAVE_SSIZE_T
39 #if SIZEOF_SIZE_T == 8
40 typedef int64_t ssize_t;
41 #elif SIZEOF_SIZE_T == 4
42 typedef int32_t ssize_t;
43 #else
44 #error "Can't define ssize_t."
45 #endif /* SIZEOF_SIZE_T == 8 || ... */
46 #endif /* !defined(HAVE_SSIZE_T) */
47 
48 /* This assumes a sane (2's-complement) representation. But if you
49  * aren't 2's complement, and you don't define LONG_MAX, then you're so
50  * bizarre that I want nothing to do with you. */
51 #ifndef USING_TWOS_COMPLEMENT
52 #error "Seems that your platform doesn't use 2's complement arithmetic. Argh."
53 #endif
54 
55 #ifndef TIME_MAX
56 
57 #if (SIZEOF_TIME_T == SIZEOF_INT)
58 #define TIME_MAX ((time_t)INT_MAX)
59 #elif (SIZEOF_TIME_T == SIZEOF_LONG)
60 #define TIME_MAX ((time_t)LONG_MAX)
61 #elif (SIZEOF_TIME_T == 8)
62 #define TIME_MAX ((time_t)INT64_MAX)
63 #else
64 #error "Can't define TIME_MAX"
65 #endif /* (SIZEOF_TIME_T == SIZEOF_INT) || ... */
66 
67 #endif /* !defined(TIME_MAX) */
68 
69 #ifndef TIME_MIN
70 
71 #if (SIZEOF_TIME_T == SIZEOF_INT)
72 #define TIME_MIN ((time_t)INT_MIN)
73 #elif (SIZEOF_TIME_T == SIZEOF_LONG)
74 #define TIME_MIN ((time_t)LONG_MIN)
75 #elif (SIZEOF_TIME_T == 8)
76 #define TIME_MIN ((time_t)INT64_MIN)
77 #else
78 #error "Can't define TIME_MIN"
79 #endif /* (SIZEOF_TIME_T == SIZEOF_INT) || ... */
80 
81 #endif /* !defined(TIME_MIN) */
82 
83 #ifndef SIZE_MAX
84 #if (SIZEOF_SIZE_T == 4)
85 #define SIZE_MAX UINT32_MAX
86 #elif (SIZEOF_SIZE_T == 8)
87 #define SIZE_MAX UINT64_MAX
88 #else
89 #error "Can't define SIZE_MAX"
90 #endif /* (SIZEOF_SIZE_T == 4) || ... */
91 #endif /* !defined(SIZE_MAX) */
92 
93 #ifdef _WIN32
94 # ifdef _WIN64
95 # define TOR_PRIuSZ PRIu64
96 # else
97 # define TOR_PRIuSZ PRIu32
98 # endif
99 #else
100 # define TOR_PRIuSZ "zu"
101 #endif
102 
103 #ifdef _WIN32
104 # ifdef _WIN64
105 # define TOR_PRIdSZ PRId64
106 # else
107 # define TOR_PRIdSZ PRId32
108 # endif
109 #else
110 # define TOR_PRIdSZ "zd"
111 #endif
112 
113 #ifndef SSIZE_MAX
114 #if (SIZEOF_SIZE_T == 4)
115 #define SSIZE_MAX INT32_MAX
116 #elif (SIZEOF_SIZE_T == 8)
117 #define SSIZE_MAX INT64_MAX
118 #else
119 #error "Can't define SSIZE_MAX"
120 #endif /* (SIZEOF_SIZE_T == 4) || ... */
121 #endif /* !defined(SSIZE_MAX) */
122 
124 #define SSIZE_T_CEILING ((ssize_t)(SSIZE_MAX-16))
125 
126 #define SIZE_T_CEILING ((size_t)(SSIZE_MAX-16))
127 
128 #if SIZEOF_INT > SIZEOF_VOID_P
129 #error "sizeof(int) > sizeof(void *) - Tor cannot be built on this platform!"
130 #endif
131 
132 #if SIZEOF_UNSIGNED_INT > SIZEOF_VOID_P
133 #error "sizeof(unsigned int) > sizeof(void *) - Tor cannot be built on this \
134 platform!"
135 #endif
136 
137 #endif /* !defined(TOR_TORINT_H) */