modernc.org/cc@v1.0.1/v2/headers/linux_386/usr/include/i386-linux-gnu/bits/signum-generic.h (about)

     1  /* Signal number constants.  Generic template.
     2     Copyright (C) 1991-2018 Free Software Foundation, Inc.
     3     This file is part of the GNU C Library.
     4  
     5     The GNU C Library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Lesser General Public
     7     License as published by the Free Software Foundation; either
     8     version 2.1 of the License, or (at your option) any later version.
     9  
    10     The GNU C Library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Lesser General Public License for more details.
    14  
    15     You should have received a copy of the GNU Lesser General Public
    16     License along with the GNU C Library; if not, see
    17     <http://www.gnu.org/licenses/>.  */
    18  
    19  #ifndef	_BITS_SIGNUM_GENERIC_H
    20  #define _BITS_SIGNUM_GENERIC_H 1
    21  
    22  #ifndef _SIGNAL_H
    23  #error "Never include <bits/signum-generic.h> directly; use <signal.h> instead."
    24  #endif
    25  
    26  /* Fake signal functions.  */
    27  
    28  #define	SIG_ERR	 ((__sighandler_t) -1)	/* Error return.  */
    29  #define	SIG_DFL	 ((__sighandler_t)  0)	/* Default action.  */
    30  #define	SIG_IGN	 ((__sighandler_t)  1)	/* Ignore signal.  */
    31  
    32  #ifdef __USE_XOPEN
    33  # define SIG_HOLD ((__sighandler_t) 2)	/* Add signal to hold mask.  */
    34  #endif
    35  
    36  /* We define here all the signal names listed in POSIX (1003.1-2008);
    37     as of 1003.1-2013, no additional signals have been added by POSIX.
    38     We also define here signal names that historically exist in every
    39     real-world POSIX variant (e.g. SIGWINCH).
    40  
    41     Signals in the 1-15 range are defined with their historical numbers.
    42     For other signals, we use the BSD numbers.
    43     There are two unallocated signal numbers in the 1-31 range: 7 and 29.
    44     Signal number 0 is reserved for use as kill(pid, 0), to test whether
    45     a process exists without sending it a signal.  */
    46  
    47  /* ISO C99 signals.  */
    48  #define	SIGINT		2	/* Interactive attention signal.  */
    49  #define	SIGILL		4	/* Illegal instruction.  */
    50  #define	SIGABRT		6	/* Abnormal termination.  */
    51  #define	SIGFPE		8	/* Erroneous arithmetic operation.  */
    52  #define	SIGSEGV		11	/* Invalid access to storage.  */
    53  #define	SIGTERM		15	/* Termination request.  */
    54  
    55  /* Historical signals specified by POSIX. */
    56  #define	SIGHUP		1	/* Hangup.  */
    57  #define	SIGQUIT		3	/* Quit.  */
    58  #define	SIGTRAP		5	/* Trace/breakpoint trap.  */
    59  #define	SIGKILL		9	/* Killed.  */
    60  #define SIGBUS		10	/* Bus error.  */
    61  #define	SIGSYS		12	/* Bad system call.  */
    62  #define	SIGPIPE		13	/* Broken pipe.  */
    63  #define	SIGALRM		14	/* Alarm clock.  */
    64  
    65  /* New(er) POSIX signals (1003.1-2008, 1003.1-2013).  */
    66  #define	SIGURG		16	/* Urgent data is available at a socket.  */
    67  #define	SIGSTOP		17	/* Stop, unblockable.  */
    68  #define	SIGTSTP		18	/* Keyboard stop.  */
    69  #define	SIGCONT		19	/* Continue.  */
    70  #define	SIGCHLD		20	/* Child terminated or stopped.  */
    71  #define	SIGTTIN		21	/* Background read from control terminal.  */
    72  #define	SIGTTOU		22	/* Background write to control terminal.  */
    73  #define	SIGPOLL		23	/* Pollable event occurred (System V).  */
    74  #define	SIGXCPU		24	/* CPU time limit exceeded.  */
    75  #define	SIGXFSZ		25	/* File size limit exceeded.  */
    76  #define	SIGVTALRM	26	/* Virtual timer expired.  */
    77  #define	SIGPROF		27	/* Profiling timer expired.  */
    78  #define	SIGUSR1		30	/* User-defined signal 1.  */
    79  #define	SIGUSR2		31	/* User-defined signal 2.  */
    80  
    81  /* Nonstandard signals found in all modern POSIX systems
    82     (including both BSD and Linux).  */
    83  #define	SIGWINCH	28	/* Window size change (4.3 BSD, Sun).  */
    84  
    85  /* Archaic names for compatibility.  */
    86  #define	SIGIO		SIGPOLL	/* I/O now possible (4.2 BSD).  */
    87  #define	SIGIOT		SIGABRT	/* IOT instruction, abort() on a PDP-11.  */
    88  #define	SIGCLD		SIGCHLD	/* Old System V name */
    89  
    90  /* Not all systems support real-time signals.  bits/signum.h indicates
    91     that they are supported by overriding __SIGRTMAX to a value greater
    92     than __SIGRTMIN.  These constants give the kernel-level hard limits,
    93     but some real-time signals may be used internally by glibc.  Do not
    94     use these constants in application code; use SIGRTMIN and SIGRTMAX
    95     (defined in signal.h) instead.  */
    96  #define __SIGRTMIN	32
    97  #define __SIGRTMAX	__SIGRTMIN
    98  
    99  /* Biggest signal number + 1 (including real-time signals).  */
   100  #define _NSIG		(__SIGRTMAX + 1)
   101  
   102  #endif				/* bits/signum-generic.h.  */