Annotation of embedaddon/libiconv/srclib/signal.in.h, revision 1.1
1.1 ! misho 1: /* A GNU-like <signal.h>.
! 2:
! 3: Copyright (C) 2006-2009 Free Software Foundation, Inc.
! 4:
! 5: This program is free software: you can redistribute it and/or modify
! 6: it under the terms of the GNU General Public License as published by
! 7: the Free Software Foundation; either version 3 of the License, or
! 8: (at your option) any later version.
! 9:
! 10: This program 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
! 13: GNU General Public License for more details.
! 14:
! 15: You should have received a copy of the GNU General Public License
! 16: along with this program. If not, see <http://www.gnu.org/licenses/>. */
! 17:
! 18: #if __GNUC__ >= 3
! 19: @PRAGMA_SYSTEM_HEADER@
! 20: #endif
! 21:
! 22: #if defined __need_sig_atomic_t || defined __need_sigset_t
! 23: /* Special invocation convention inside glibc header files. */
! 24:
! 25: # @INCLUDE_NEXT@ @NEXT_SIGNAL_H@
! 26:
! 27: #else
! 28: /* Normal invocation convention. */
! 29:
! 30: #ifndef _GL_SIGNAL_H
! 31:
! 32: /* The include_next requires a split double-inclusion guard. */
! 33: #@INCLUDE_NEXT@ @NEXT_SIGNAL_H@
! 34:
! 35: #ifndef _GL_SIGNAL_H
! 36: #define _GL_SIGNAL_H
! 37:
! 38: /* The definition of GL_LINK_WARNING is copied here. */
! 39:
! 40: /* Define pid_t, uid_t.
! 41: Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>. */
! 42: #include <sys/types.h>
! 43:
! 44: /* On AIX, sig_atomic_t already includes volatile. C99 requires that
! 45: 'volatile sig_atomic_t' ignore the extra modifier, but C89 did not.
! 46: Hence, redefine this to a non-volatile type as needed. */
! 47: #if ! @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
! 48: typedef int rpl_sig_atomic_t;
! 49: # undef sig_atomic_t
! 50: # define sig_atomic_t rpl_sig_atomic_t
! 51: #endif
! 52:
! 53: #ifdef __cplusplus
! 54: extern "C" {
! 55: #endif
! 56:
! 57:
! 58: #if @GNULIB_SIGNAL_H_SIGPIPE@
! 59: # ifndef SIGPIPE
! 60: /* Define SIGPIPE to a value that does not overlap with other signals. */
! 61: # define SIGPIPE 13
! 62: # define GNULIB_defined_SIGPIPE 1
! 63: /* To actually use SIGPIPE, you also need the gnulib modules 'sigprocmask',
! 64: 'write', 'stdio'. */
! 65: # endif
! 66: #endif
! 67:
! 68:
! 69: #if !@HAVE_POSIX_SIGNALBLOCKING@
! 70:
! 71: /* Maximum signal number + 1. */
! 72: # ifndef NSIG
! 73: # define NSIG 32
! 74: # endif
! 75:
! 76: /* This code supports only 32 signals. */
! 77: typedef int verify_NSIG_constraint[2 * (NSIG <= 32) - 1];
! 78:
! 79: /* A set or mask of signals. */
! 80: # if !@HAVE_SIGSET_T@
! 81: typedef unsigned int sigset_t;
! 82: # endif
! 83:
! 84: /* Test whether a given signal is contained in a signal set. */
! 85: extern int sigismember (const sigset_t *set, int sig);
! 86:
! 87: /* Initialize a signal set to the empty set. */
! 88: extern int sigemptyset (sigset_t *set);
! 89:
! 90: /* Add a signal to a signal set. */
! 91: extern int sigaddset (sigset_t *set, int sig);
! 92:
! 93: /* Remove a signal from a signal set. */
! 94: extern int sigdelset (sigset_t *set, int sig);
! 95:
! 96: /* Fill a signal set with all possible signals. */
! 97: extern int sigfillset (sigset_t *set);
! 98:
! 99: /* Return the set of those blocked signals that are pending. */
! 100: extern int sigpending (sigset_t *set);
! 101:
! 102: /* If OLD_SET is not NULL, put the current set of blocked signals in *OLD_SET.
! 103: Then, if SET is not NULL, affect the current set of blocked signals by
! 104: combining it with *SET as indicated in OPERATION.
! 105: In this implementation, you are not allowed to change a signal handler
! 106: while the signal is blocked. */
! 107: # define SIG_BLOCK 0 /* blocked_set = blocked_set | *set; */
! 108: # define SIG_SETMASK 1 /* blocked_set = *set; */
! 109: # define SIG_UNBLOCK 2 /* blocked_set = blocked_set & ~*set; */
! 110: extern int sigprocmask (int operation, const sigset_t *set, sigset_t *old_set);
! 111:
! 112: # define signal rpl_signal
! 113: /* Install the handler FUNC for signal SIG, and return the previous
! 114: handler. */
! 115: extern void (*signal (int sig, void (*func) (int))) (int);
! 116:
! 117: # if GNULIB_defined_SIGPIPE
! 118:
! 119: /* Raise signal SIG. */
! 120: # undef raise
! 121: # define raise rpl_raise
! 122: extern int raise (int sig);
! 123:
! 124: # endif
! 125:
! 126: #endif /* !@HAVE_POSIX_SIGNALBLOCKING@ */
! 127:
! 128:
! 129: #if !@HAVE_SIGACTION@
! 130:
! 131: # if !@HAVE_SIGINFO_T@
! 132: /* Present to allow compilation, but unsupported by gnulib. */
! 133: union sigval
! 134: {
! 135: int sival_int;
! 136: void *sival_ptr;
! 137: };
! 138:
! 139: /* Present to allow compilation, but unsupported by gnulib. */
! 140: struct siginfo_t
! 141: {
! 142: int si_signo;
! 143: int si_code;
! 144: int si_errno;
! 145: pid_t si_pid;
! 146: uid_t si_uid;
! 147: void *si_addr;
! 148: int si_status;
! 149: long si_band;
! 150: union sigval si_value;
! 151: };
! 152: typedef struct siginfo_t siginfo_t;
! 153: # endif /* !@HAVE_SIGINFO_T@ */
! 154:
! 155: /* We assume that platforms which lack the sigaction() function also lack
! 156: the 'struct sigaction' type, and vice versa. */
! 157:
! 158: struct sigaction
! 159: {
! 160: union
! 161: {
! 162: void (*_sa_handler) (int);
! 163: /* Present to allow compilation, but unsupported by gnulib. POSIX
! 164: says that implementations may, but not must, make sa_sigaction
! 165: overlap with sa_handler, but we know of no implementation where
! 166: they do not overlap. */
! 167: void (*_sa_sigaction) (int, siginfo_t *, void *);
! 168: } _sa_func;
! 169: sigset_t sa_mask;
! 170: /* Not all POSIX flags are supported. */
! 171: int sa_flags;
! 172: };
! 173: # define sa_handler _sa_func._sa_handler
! 174: # define sa_sigaction _sa_func._sa_sigaction
! 175: /* Unsupported flags are not present. */
! 176: # define SA_RESETHAND 1
! 177: # define SA_NODEFER 2
! 178: # define SA_RESTART 4
! 179:
! 180: extern int sigaction (int, const struct sigaction *restrict,
! 181: struct sigaction *restrict);
! 182:
! 183: #elif !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@
! 184:
! 185: # define sa_sigaction sa_handler
! 186:
! 187: #endif /* !@HAVE_SIGACTION@, !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ */
! 188:
! 189:
! 190: /* Some systems don't have SA_NODEFER. */
! 191: #ifndef SA_NODEFER
! 192: # define SA_NODEFER 0
! 193: #endif
! 194:
! 195:
! 196: #ifdef __cplusplus
! 197: }
! 198: #endif
! 199:
! 200: #endif /* _GL_SIGNAL_H */
! 201: #endif /* _GL_SIGNAL_H */
! 202: #endif
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to signal.in.h CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / libiconv / srclib