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Add EV_*_MAX macros to event2/util.h to expose limits for ev_* types.

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This commit is contained in:
Nick Mathewson 2010-02-03 14:37:42 -05:00
parent da6135e356
commit aba1fff33a
2 changed files with 25 additions and 35 deletions
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25
include/event2/util.h
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@ -115,20 +115,26 @@ extern "C" {
#ifdef _EVENT_HAVE_UINT16_T
#define ev_uint16_t uint16_t
#define ev_int16_t int16_t
#elif defined(WIN32)
#define ev_uint16_t unsigned short
#define ev_int16_t signed short
#elif _EVENT_SIZEOF_INT == 2
#define ev_uint16_t unsigned int
#define ev_int16_t signed int
#elif _EVENT_SIZEOF_SHORT == 2
#define ev_uint16_t unsigned short
#define ev_int16_t signed short
#else
#error "No way to define ev_uint16_t"
#endif
#ifdef _EVENT_HAVE_UINT8_T
#define ev_uint8_t uint8_t
#define ev_int8_t int8_t
#else
#define ev_uint8_t unsigned char
#define ev_int8_t signed char
#endif
#ifdef _EVENT_HAVE_UINTPTR_T
@ -150,6 +156,25 @@ extern "C" {
#define ev_ssize_t ssize_t
#endif
#define EV_UINT64_MAX ((((ev_uint64_t)0xffffffffUL) << 32) | 0xffffffffUL)
#define EV_INT64_MAX ((((ev_int64_t) 0x7fffffffL) << 32) | 0xffffffffL)
#define EV_UINT32_MAX ((ev_uint32_t)0xffffffffUL)
#define EV_INT32_MAX ((ev_int32_t) 0x7fffffffL)
#define EV_UINT16_MAX ((ev_uint16_t)0xffffUL)
#define EV_INT16_MAX ((ev_int16_t) 0x7fffL)
#define EV_UINT8_MAX 255
#define EV_INT8_MAX 127
#if _EVENT_SIZEOF_SIZE_T == 8
#define EV_SIZE_MAX EV_UINT64_MAX
#define EV_SSIZE_MAX EV_INT64_MAX
#elif _EVENT_SIZEOF_SIZE_T == 4
#define EV_SIZE_MAX EV_UINT32_MAX
#define EV_SSIZE_MAX EV_INT32_MAX
#else
#error "No way to define SIZE_MAX"
#endif
#ifdef WIN32
#define ev_socklen_t int
#elif defined(_EVENT_socklen_t)

35
util-internal.h
View File

@ -174,41 +174,6 @@ long _evutil_weakrand(void);
} \
} while(0)
#ifdef UINT64_MAX
#define EV_UINT64_MAX UINT64_MAX
#elif defined(WIN32)
#define EV_UINT64_MAX 0xffffffffffffffffui64
#elif _EVENT_SIZEOF_LONG_LONG == 8
#define EV_UINT64_MAX 0xffffffffffffffffull
#elif _EVENT_SIZEOF_LONG == 8
#define EV_UINT64_MAX 0xfffffffffffffffful
#else
/* Hope for a two's complement representation */
#define EV_UINT64_MAX ((ev_uint64_t)-1)
#endif
#ifdef UINT32_MAX
#define EV_UINT32_MAX UINT32_MAX
#elif defined(WIN32)
#define EV_UINT32_MAX 0xffffffffui64
#elif _EVENT_SIZEOF_INT == 4
#define EV_UINT32_MAX 0xffffffffu
#elif _EVENT_SIZEOF_LONG == 4
#define EV_UINT32_MAX 0xfffffffful
#else
/* Hope for a two's complement representation */
#define EV_UINT32_MAX ((ev_uint32_t)-1)
#endif
#if _EVENT_SIZEOF_SIZE_T == 8
#define EV_SIZE_MAX EV_UINT64_MAX
#elif _EVENT_SIZEOF_SIZE_T == 4
#define EV_SIZE_MAX EV_UINT32_MAX
#else
/* Hope for a two's complement representation */
#define EV_SIZE_MAX ((size_t)-1)
#endif
/* Internal addrinfo error code. This one is returned from only from
* evutil_getaddrinfo_common, when we are sure that we'll have to hit a DNS
* server. */