5c8c00a95a
After this change, SIGRTMAX will be set to 64 (instead of 32 currently). Note that this doesn't change the fact that our sigset_t is still defined as a 32-bit unsigned integer, so most functions that deal with this type won't support real-time signals though. Change-Id: Ie1e2f97d646f1664f05a0ac9cac4a43278c3cfa8
132 lines
3.9 KiB
C
132 lines
3.9 KiB
C
/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _SIGNAL_H_
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#define _SIGNAL_H_
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#include <sys/cdefs.h>
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#include <limits.h> /* For LONG_BIT */
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#include <string.h> /* For memset() */
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#include <sys/types.h>
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#include <asm/signal.h>
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#define __ARCH_SI_UID_T __kernel_uid32_t
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#include <asm/siginfo.h>
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#undef __ARCH_SI_UID_T
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__BEGIN_DECLS
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typedef int sig_atomic_t;
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/* _NSIG is used by the SIGRTMAX definition under <asm/signal.h>, however
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* its definition is part of a #if __KERNEL__ .. #endif block in the original
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* kernel headers and is thus not part of our cleaned-up versions.
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*
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* Looking at the current kernel sources, it is defined as 64 for all
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* architectures except for the 'mips' one which set it to 128.
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*/
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#ifndef _NSIG
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# define _NSIG 64
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#endif
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extern const char * const sys_siglist[];
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extern const char * const sys_signame[];
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static __inline__ int sigismember(sigset_t *set, int signum)
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{
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unsigned long *local_set = (unsigned long *)set;
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signum--;
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return (int)((local_set[signum/LONG_BIT] >> (signum%LONG_BIT)) & 1);
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}
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static __inline__ int sigaddset(sigset_t *set, int signum)
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{
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unsigned long *local_set = (unsigned long *)set;
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signum--;
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local_set[signum/LONG_BIT] |= 1UL << (signum%LONG_BIT);
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return 0;
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}
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static __inline__ int sigdelset(sigset_t *set, int signum)
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{
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unsigned long *local_set = (unsigned long *)set;
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signum--;
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local_set[signum/LONG_BIT] &= ~(1UL << (signum%LONG_BIT));
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return 0;
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}
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static __inline__ int sigemptyset(sigset_t *set)
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{
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memset(set, 0, sizeof *set);
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return 0;
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}
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static __inline__ int sigfillset(sigset_t *set)
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{
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memset(set, ~0, sizeof *set);
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return 0;
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}
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/* compatibility types */
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typedef void (*sig_t)(int);
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typedef sig_t sighandler_t;
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/* differentiater between sysv and bsd behaviour 8*/
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extern __sighandler_t sysv_signal(int, __sighandler_t);
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extern __sighandler_t bsd_signal(int, __sighandler_t);
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/* the default is bsd */
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static __inline__ __sighandler_t signal(int s, __sighandler_t f)
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{
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return bsd_signal(s,f);
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}
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/* the syscall itself */
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extern __sighandler_t __signal(int, __sighandler_t, int);
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extern int sigprocmask(int, const sigset_t *, sigset_t *);
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extern int sigaction(int, const struct sigaction *, struct sigaction *);
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extern int sigpending(sigset_t *);
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extern int sigsuspend(const sigset_t *);
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extern int sigwait(const sigset_t *set, int *sig);
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extern int siginterrupt(int sig, int flag);
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extern int raise(int);
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extern int kill(pid_t, int);
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extern int killpg(int pgrp, int sig);
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extern int sigaltstack(const stack_t *ss, stack_t *oss);
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__END_DECLS
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#endif /* _SIGNAL_H_ */
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