3171175e90
on RLIMIT_NOFILE.
* syscalls.cc (getdtablesize): Return OPEN_MAX.
* sysconf.cc (sysconf): Return OPEN_MAX on _SC_OPEN_MAX.
* include/limits.h (OPEN_MAX): Define as 256.
152 lines
3.9 KiB
C
152 lines
3.9 KiB
C
/* limits.h
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Copyright 1999, 2000 Cygnus Solutions.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _LIMITS_H___
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#ifndef _MACH_MACHLIMITS_H_
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/* _MACH_MACHLIMITS_H_ is used on OSF/1. */
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#define _LIMITS_H___
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#define _MACH_MACHLIMITS_H_
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/* Number of bits in a `char'. */
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#undef CHAR_BIT
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#define CHAR_BIT 8
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/* Maximum length of a multibyte character. */
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#ifndef MB_LEN_MAX
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#define MB_LEN_MAX 1
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#endif
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/* Minimum and maximum values a `signed char' can hold. */
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#undef SCHAR_MIN
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#define SCHAR_MIN (-128)
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#undef SCHAR_MAX
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#define SCHAR_MAX 127
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/* Maximum value an `unsigned char' can hold. (Minimum is 0). */
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#undef UCHAR_MAX
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#define UCHAR_MAX 255
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/* Minimum and maximum values a `char' can hold. */
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#ifdef __CHAR_UNSIGNED__
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#undef CHAR_MIN
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#define CHAR_MIN 0
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#undef CHAR_MAX
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#define CHAR_MAX 255
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#else
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#undef CHAR_MIN
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#define CHAR_MIN (-128)
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#undef CHAR_MAX
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#define CHAR_MAX 127
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#endif
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/* Minimum and maximum values a `signed short int' can hold. */
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#undef SHRT_MIN
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#define SHRT_MIN (-32768)
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#undef SHRT_MAX
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#define SHRT_MAX 32767
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/* Maximum value an `unsigned short int' can hold. (Minimum is 0). */
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#undef USHRT_MAX
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#define USHRT_MAX 65535
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/* Minimum and maximum values a `signed int' can hold. */
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#ifndef __INT_MAX__
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#define __INT_MAX__ 2147483647
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#endif
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#undef INT_MIN
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#define INT_MIN (-INT_MAX-1)
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#undef INT_MAX
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#define INT_MAX __INT_MAX__
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/* Maximum value an `unsigned int' can hold. (Minimum is 0). */
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#undef UINT_MAX
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#define UINT_MAX (INT_MAX * 2U + 1)
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/* Minimum and maximum values a `signed long int' can hold.
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(Same as `int'). */
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#ifndef __LONG_MAX__
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#ifndef __alpha__
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#define __LONG_MAX__ 2147483647L
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#else
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#define __LONG_MAX__ 9223372036854775807L
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# endif /* __alpha__ */
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#endif
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#undef LONG_MIN
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#define LONG_MIN (-LONG_MAX-1)
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#undef LONG_MAX
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#define LONG_MAX __LONG_MAX__
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/* Maximum value an `unsigned long int' can hold. (Minimum is 0). */
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#undef ULONG_MAX
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#define ULONG_MAX (LONG_MAX * 2UL + 1)
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#if defined (__GNU_LIBRARY__) ? defined (__USE_GNU) : !defined (__STRICT_ANSI__)
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/* Minimum and maximum values a `signed long long int' can hold. */
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#ifndef __LONG_LONG_MAX__
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#define __LONG_LONG_MAX__ 9223372036854775807LL
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#endif
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#undef LONG_LONG_MIN
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#define LONG_LONG_MIN (-LONG_LONG_MAX-1)
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#undef LONG_LONG_MAX
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#define LONG_LONG_MAX __LONG_LONG_MAX__
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/* Maximum value an `unsigned long long int' can hold. (Minimum is 0). */
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#undef ULONG_LONG_MAX
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#define ULONG_LONG_MAX (LONG_LONG_MAX * 2ULL + 1)
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#endif
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/* Maximum number of iovcnt in a writev */
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#undef IOV_MAX
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#define IOV_MAX (__INT_MAX__-1)
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/* Maximum size of ssize_t */
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#undef SSIZE_MAX
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#define SSIZE_MAX (__LONG_MAX__)
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/* Maximum length of a path */
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#define PATH_MAX (260 - 1 /*NUL*/)
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/* Max num groups for a user, value taken from NT documentation */
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/* Must match <sys/param.h> NGROUPS */
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#define NGROUPS_MAX 16
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/* WaitForMultipleObjects can't handle waiting for more than 64 objects.
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This limits how many children we can fork/spawn off. */
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#define CHILD_MAX 63
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/* # of open files per process. Actually it can be more since Cygwin
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grows the dtable as necessary. We define a reasonable limit here
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which is returned by getdtablesize(), sysconf(_SC_OPEN_MAX) and
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getrlimit(RLIMIT_NOFILE). */
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#undef OPEN_MAX
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#define OPEN_MAX 256
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/* POSIX values */
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/* These should never vary from one system type to another */
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/* They represent the minimum values that POSIX systems must support.
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POSIX-conforming apps must not require larger values. */
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#define _POSIX_ARG_MAX 4096
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#define _POSIX_CHILD_MAX 6
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#define _POSIX_LINK_MAX 8
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#define _POSIX_MAX_CANON 255
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#define _POSIX_MAX_INPUT 255
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#define _POSIX_NAME_MAX 14
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#define _POSIX_NGROUPS_MAX 0
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#define _POSIX_OPEN_MAX 16
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#define _POSIX_PATH_MAX 255
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#define _POSIX_PIPE_BUF 512
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#define _POSIX_SSIZE_MAX 32767
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#define _POSIX_STREAM_MAX 8
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#define _POSIX_TZNAME_MAX 3
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#endif /* _MACH_MACHLIMITS_H_ */
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#endif /* _LIMITS_H___ */
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