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newlib-cygwin/winsup/cygwin/include/limits.h

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import winsup-2000-02-17 snapshot
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/* limits.h
* include/limits.h: Include features.h, as on linux.
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Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc.
import winsup-2000-02-17 snapshot
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This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef _LIMITS_H___
* include/limits.h: Include features.h, as on linux.
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#include <features.h>
import winsup-2000-02-17 snapshot
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#ifndef _MACH_MACHLIMITS_H_
/* _MACH_MACHLIMITS_H_ is used on OSF/1. */
#define _LIMITS_H___
#define _MACH_MACHLIMITS_H_
/* Number of bits in a `char'. */
#undef CHAR_BIT
#define CHAR_BIT 8
/* Maximum length of a multibyte character. */
#ifndef MB_LEN_MAX
#define MB_LEN_MAX 1
#endif
/* Minimum and maximum values a `signed char' can hold. */
#undef SCHAR_MIN
#define SCHAR_MIN (-128)
#undef SCHAR_MAX
#define SCHAR_MAX 127
/* Maximum value an `unsigned char' can hold. (Minimum is 0). */
#undef UCHAR_MAX
#define UCHAR_MAX 255
/* Minimum and maximum values a `char' can hold. */
#ifdef __CHAR_UNSIGNED__
#undef CHAR_MIN
#define CHAR_MIN 0
#undef CHAR_MAX
#define CHAR_MAX 255
#else
#undef CHAR_MIN
#define CHAR_MIN (-128)
#undef CHAR_MAX
#define CHAR_MAX 127
#endif
/* Minimum and maximum values a `signed short int' can hold. */
#undef SHRT_MIN
#define SHRT_MIN (-32768)
#undef SHRT_MAX
#define SHRT_MAX 32767
/* Maximum value an `unsigned short int' can hold. (Minimum is 0). */
#undef USHRT_MAX
#define USHRT_MAX 65535
/* Minimum and maximum values a `signed int' can hold. */
#ifndef __INT_MAX__
#define __INT_MAX__ 2147483647
#endif
#undef INT_MIN
#define INT_MIN (-INT_MAX-1)
#undef INT_MAX
#define INT_MAX __INT_MAX__
/* Maximum value an `unsigned int' can hold. (Minimum is 0). */
#undef UINT_MAX
#define UINT_MAX (INT_MAX * 2U + 1)
/* Minimum and maximum values a `signed long int' can hold.
(Same as `int'). */
#ifndef __LONG_MAX__
#ifndef __alpha__
#define __LONG_MAX__ 2147483647L
#else
#define __LONG_MAX__ 9223372036854775807L
# endif /* __alpha__ */
#endif
#undef LONG_MIN
#define LONG_MIN (-LONG_MAX-1)
#undef LONG_MAX
#define LONG_MAX __LONG_MAX__
/* Maximum value an `unsigned long int' can hold. (Minimum is 0). */
#undef ULONG_MAX
#define ULONG_MAX (LONG_MAX * 2UL + 1)
/* Minimum and maximum values a `signed long long int' can hold. */
#ifndef __LONG_LONG_MAX__
#define __LONG_LONG_MAX__ 9223372036854775807LL
#endif
* include/limits.h: Define LLONG_MIN, LLONG_MAX, ULLONG_MAX.
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#if defined (__GNU_LIBRARY__) ? defined (__USE_GNU) : !defined (__STRICT_ANSI__)
import winsup-2000-02-17 snapshot
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#undef LONG_LONG_MIN
#define LONG_LONG_MIN (-LONG_LONG_MAX-1)
#undef LONG_LONG_MAX
#define LONG_LONG_MAX __LONG_LONG_MAX__
/* Maximum value an `unsigned long long int' can hold. (Minimum is 0). */
#undef ULONG_LONG_MAX
#define ULONG_LONG_MAX (LONG_LONG_MAX * 2ULL + 1)
#endif
* include/limits.h: Define LLONG_MIN, LLONG_MAX, ULLONG_MAX.
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/* Minimum and maximum values a `signed long long int' can hold. */
#undef LLONG_MIN
#define LLONG_MIN (-LLONG_MAX-1)
#undef LLONG_MAX
#define LLONG_MAX __LONG_LONG_MAX__
/* Maximum value an `unsigned long long int' can hold. (Minimum is 0). */
#undef ULLONG_MAX
#define ULLONG_MAX (LLONG_MAX * 2ULL + 1)
* fhandler_console.cc (fhandler_console::read) Handle certain key up events, to allow pasting accented characters and typing them using the "alt + numerics" sequences. * include/limits.h (IOV_MAX): Set to a number which is small enough to use in an array.
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/* Maximum number of iovcnt in a writev (an arbitrary number) */
import winsup-2000-02-17 snapshot
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#undef IOV_MAX
* fhandler_console.cc (fhandler_console::read) Handle certain key up events, to allow pasting accented characters and typing them using the "alt + numerics" sequences. * include/limits.h (IOV_MAX): Set to a number which is small enough to use in an array.
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#define IOV_MAX 1024
import winsup-2000-02-17 snapshot
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/* Maximum size of ssize_t */
#undef SSIZE_MAX
#define SSIZE_MAX (__LONG_MAX__)
/* Maximum length of a path */
* include/limits.h (NAME_MAX): New define. (PATH_MAX): POSIX allows PATH_MAX to include trailing NUL.
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#define PATH_MAX 260
/* Maximum length of a path component. */
#define NAME_MAX 255
import winsup-2000-02-17 snapshot
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/* Max num groups for a user, value taken from NT documentation */
/* Must match <sys/param.h> NGROUPS */
#define NGROUPS_MAX 16
/* WaitForMultipleObjects can't handle waiting for more than 64 objects.
This limits how many children we can fork/spawn off. */
#define CHILD_MAX 63
* resource.cc (getrlimit): Return OPEN_MAX as current limit 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.
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/* # of open files per process. Actually it can be more since Cygwin
grows the dtable as necessary. We define a reasonable limit here
which is returned by getdtablesize(), sysconf(_SC_OPEN_MAX) and
getrlimit(RLIMIT_NOFILE). */
#undef OPEN_MAX
#define OPEN_MAX 256
* include/limits.h: Define PIPE_BUF. * syscalls.cc (fpathconf): Use PIPE_BUF instead of numerical constant. (pathconf): Ditto.
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/* # of bytes in a pipe buf. This is the max # of bytes which can be
written to a pipe in one atomic operation. */
#undef PIPE_BUF
#define PIPE_BUF 4096
* exceptions.cc (setup_handler): Signal event for any sigwaitinfo if it exists to force signal to be handled. Zero event here to prevent races. * signal.cc (sigwaitinfo): Use local handle value for everything since signal thread could zero event element at any time. Detect when awaking due to thread not in mask and set return value and errno accordingly. Don't set signal number to zero unless we've recognized the signal. * sigproc.cc (sigq): Rename from sigqueue throughout. * thread.cc (pthread::join): Handle signals received while waiting for thread to terminate. * cygwin.din: Export sighold, sigqueue. * exceptions.cc (sighold): Define new function. * signal.cc (handle_sigprocmask): Set correct errno for invalid signal. Simplify debugging output. (sigqueue): Define new function. * include/cygwin/signal.h (sighold): Declare new function. (sigqueue): Ditto. * include/cygwin/version.h: Bump API minor version number. * include/limits.h (TIMER_MAX): Define. (_POSIX_TIMER_MAX): Ditto.
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/* Maximum number of timer expiration overruns. */
#undef TIMER_MAX
#define TIMER_MAX 32
* cygwin.din: Add symbols flockfile, ftrylockfile, funlockfile, getgrgid_r, getgrnam_r and getlogin_r. * grp.cc (getgrgid_r): New function. (getgrnam_r): Ditto. * syscalls.cc (flockfile): Ditto. (ftrylockfile): Ditto. (funlockfile): Ditto. * sysconf.cc (sysconf): Return LOGIN_NAME_MAX in case of _SC_LOGIN_NAME_MAX. * thread.cc (__cygwin_lock_trylock): Define int. Return value from call to pthread_mutex_trylock. * uinfo.cc (getlogin_r): New function. * include/limits.h: Define LOGIN_NAME_MAX. * include/cygwin/version.h: Bump API minor number. * include/sys/lock.h: Add declarations for __cygwin_lock_xxx functions. * include/sys/stdio.h: Add define for _ftrylockfile.
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/* Maximum number of characters in a login name. */
#undef LOGIN_NAME_MAX
#define LOGIN_NAME_MAX 256 /* equal to UNLEN defined in w32api/lmcons.h */
* autoload.cc (NtSetSecurityObject): Add. * fhandler_disk_file.cc (fhandler_disk_file::fchmod): Only request READ_CONTROL rights when opening the file. * ntdll.h (NtSetSecurityObject): Add declaration. * security.cc (write_sd): Call NtSetSecurityObject instead of BackupWrite. (get_nt_object_security): Don't free security descriptor here. * syscalls.cc (ttyname): Use buffer of length TTY_NAME_MAX + 1. * sysconf.cc (sysconf): Handle _SC_TTY_NAME_MAX request. * include/limits.h: Define TTY_NAME_MAX and _POSIX_TTY_NAME_MAX.
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/* Maximum number of characters in a tty name. */
#undef TTY_NAME_MAX
#define TTY_NAME_MAX 12
import winsup-2000-02-17 snapshot
2000-02-18 03:38:33 +08:00
/* POSIX values */
/* These should never vary from one system type to another */
/* They represent the minimum values that POSIX systems must support.
POSIX-conforming apps must not require larger values. */
#define _POSIX_ARG_MAX 4096
#define _POSIX_CHILD_MAX 6
#define _POSIX_LINK_MAX 8
#define _POSIX_MAX_CANON 255
#define _POSIX_MAX_INPUT 255
#define _POSIX_NAME_MAX 14
#define _POSIX_NGROUPS_MAX 0
#define _POSIX_OPEN_MAX 16
#define _POSIX_PATH_MAX 255
#define _POSIX_PIPE_BUF 512
#define _POSIX_SSIZE_MAX 32767
#define _POSIX_STREAM_MAX 8
#define _POSIX_TZNAME_MAX 3
* Makefile.in (DLL_OFILES): Add strsig.o. * cygtls.h (_local_storage::signamebuf) New element. * sysconf.cc (sysconf): Implement _SC_RTSIG_MAX. * tlsoffset.h: Regenerate. * include/limits.h (_POSIX_RTSIG_MAX): New define. (RTSIG_MAX): Ditto. * include/cygwin/signal.h (SIGRTMIN): New define. (SIGRTMAX): Ditto. (NSIG): Bump. * strsig.cc: New file.
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#define _POSIX_RTSIG_MAX 8
* exceptions.cc (setup_handler): Signal event for any sigwaitinfo if it exists to force signal to be handled. Zero event here to prevent races. * signal.cc (sigwaitinfo): Use local handle value for everything since signal thread could zero event element at any time. Detect when awaking due to thread not in mask and set return value and errno accordingly. Don't set signal number to zero unless we've recognized the signal. * sigproc.cc (sigq): Rename from sigqueue throughout. * thread.cc (pthread::join): Handle signals received while waiting for thread to terminate. * cygwin.din: Export sighold, sigqueue. * exceptions.cc (sighold): Define new function. * signal.cc (handle_sigprocmask): Set correct errno for invalid signal. Simplify debugging output. (sigqueue): Define new function. * include/cygwin/signal.h (sighold): Declare new function. (sigqueue): Ditto. * include/cygwin/version.h: Bump API minor version number. * include/limits.h (TIMER_MAX): Define. (_POSIX_TIMER_MAX): Ditto.
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#define _POSIX_TIMER_MAX 32
* autoload.cc (NtSetSecurityObject): Add. * fhandler_disk_file.cc (fhandler_disk_file::fchmod): Only request READ_CONTROL rights when opening the file. * ntdll.h (NtSetSecurityObject): Add declaration. * security.cc (write_sd): Call NtSetSecurityObject instead of BackupWrite. (get_nt_object_security): Don't free security descriptor here. * syscalls.cc (ttyname): Use buffer of length TTY_NAME_MAX + 1. * sysconf.cc (sysconf): Handle _SC_TTY_NAME_MAX request. * include/limits.h: Define TTY_NAME_MAX and _POSIX_TTY_NAME_MAX.
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#define _POSIX_TTY_NAME_MAX 9
* Makefile.in (DLL_OFILES): Add strsig.o. * cygtls.h (_local_storage::signamebuf) New element. * sysconf.cc (sysconf): Implement _SC_RTSIG_MAX. * tlsoffset.h: Regenerate. * include/limits.h (_POSIX_RTSIG_MAX): New define. (RTSIG_MAX): Ditto. * include/cygwin/signal.h (SIGRTMIN): New define. (SIGRTMAX): Ditto. (NSIG): Bump. * strsig.cc: New file.
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#define RTSIG_MAX _POSIX_RTSIG_MAX
import winsup-2000-02-17 snapshot
2000-02-18 03:38:33 +08:00
* cygwin.din: Export getpriority and setpriority. * fork.cc (fork_parent): Copy parent's nice value into child. * spawn.cc (spawn_guts): Ditto. * miscfuncs.cc (winprio_to_nice): New function. (nice_to_winprio): Ditto. * pinfo.cc (pinfo_init): If parent is not a Cygwin process, set default nice value according to current Win32 priority class. * pinfo.h (class _pinfo): Add nice member. * syscalls.cc (setpriority): New function, only implementing PRIO_PROCESS for now. (getpriority): Ditto. (nice): Just call setpriority. * wincap.h (wincaps::has_extended_priority_class): New element. * wincap.cc: Implement above element throughout. * winsup.h: Add prototypes for winprio_to_nice and nice_to_winprio. * include/limits.h (NZERO): New define. * include/cygwin/types.h (id_t): New datatype. * include/cygwin/version.h: Bump API minor version. * include/sys/resource.h: Add PRIO_XXX defines and prototypes for getpriority and setpriority.
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/* Used for nice and get/setpriority. */
#define NZERO 20
import winsup-2000-02-17 snapshot
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#endif /* _MACH_MACHLIMITS_H_ */
#endif /* _LIMITS_H___ */