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153cbcd657
The `nonnull' attribute specifies that some function parameters should be non-null pointers. This is very useful as it helps the compiler generate warnings on suspicious code and can also enable some small optimizations. Also start using 'alloc_size' attribute in the allocator functions. This is an initial step to better integrate our libc with the compiler: these attributes are fully supported by clang and they are also useful for the static analyzer. Note that due to some bogus internal procedure in the way gcc ports are built they may require updating if they were built before r280801. Relnotes: yes Hinted by: Android's bionic libc Differential Revision: https://reviews.freebsd.org/D2107
125 lines
4.1 KiB
C
125 lines
4.1 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. 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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT 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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* @(#)signal.h 8.3 (Berkeley) 3/30/94
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* $FreeBSD$
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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 <sys/_types.h>
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#include <sys/signal.h>
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#if __BSD_VISIBLE
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/*
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* XXX should enlarge these, if only to give empty names instead of bounds
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* errors for large signal numbers.
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*/
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extern const char * const sys_signame[NSIG];
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extern const char * const sys_siglist[NSIG];
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extern const int sys_nsig;
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#endif
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#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE
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#ifndef _PID_T_DECLARED
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typedef __pid_t pid_t;
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#define _PID_T_DECLARED
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#endif
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#endif
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#if __POSIX_VISIBLE || __XSI_VISIBLE
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struct pthread; /* XXX */
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typedef struct pthread *__pthread_t;
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#if !defined(_PTHREAD_T_DECLARED) && __POSIX_VISIBLE >= 200809
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typedef __pthread_t pthread_t;
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#define _PTHREAD_T_DECLARED
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#endif
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#endif /* __POSIX_VISIBLE || __XSI_VISIBLE */
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__BEGIN_DECLS
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int raise(int);
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#if __POSIX_VISIBLE || __XSI_VISIBLE
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int kill(__pid_t, int);
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int pthread_kill(__pthread_t, int);
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int pthread_sigmask(int, const __sigset_t * __restrict,
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__sigset_t * __restrict);
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int sigaction(int, const struct sigaction * __restrict,
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struct sigaction * __restrict);
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int sigaddset(sigset_t *, int);
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int sigdelset(sigset_t *, int);
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int sigemptyset(sigset_t *);
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int sigfillset(sigset_t *);
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int sigismember(const sigset_t *, int);
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int sigpending(sigset_t *) __nonnull(1);
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int sigprocmask(int, const sigset_t * __restrict, sigset_t * __restrict);
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int sigsuspend(const sigset_t *) __nonnull(1);
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int sigwait(const sigset_t * __restrict, int * __restrict) __nonnull_all;
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#endif
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#if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE >= 600
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int sigqueue(__pid_t, int, const union sigval);
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struct timespec;
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int sigtimedwait(const sigset_t * __restrict, siginfo_t * __restrict,
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const struct timespec * __restrict);
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int sigwaitinfo(const sigset_t * __restrict, siginfo_t * __restrict);
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#endif
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#if __XSI_VISIBLE
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int killpg(__pid_t, int);
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int sigaltstack(const stack_t * __restrict, stack_t * __restrict);
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int sighold(int);
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int sigignore(int);
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int sigpause(int);
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int sigrelse(int);
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void (*sigset(int, void (*)(int)))(int);
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int xsi_sigpause(int);
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#endif
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#if __XSI_VISIBLE >= 600
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int siginterrupt(int, int);
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#endif
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#if __POSIX_VISIBLE >= 200809
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void psignal(unsigned int, const char *);
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#endif
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#if __BSD_VISIBLE
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int sigblock(int);
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struct __ucontext; /* XXX spec requires a complete declaration. */
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int sigreturn(const struct __ucontext *);
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int sigsetmask(int);
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int sigstack(const struct sigstack *, struct sigstack *);
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int sigvec(int, struct sigvec *, struct sigvec *);
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#endif
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__END_DECLS
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#endif /* !_SIGNAL_H_ */
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