/* $NetBSD: pthread_specific.c,v 1.26 2013/03/21 16:49:12 christos Exp $ */ /*- * Copyright (c) 2001, 2007 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Nathan J. Williams. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __RCSID("$NetBSD: pthread_specific.c,v 1.26 2013/03/21 16:49:12 christos Exp $"); /* Functions and structures dealing with thread-specific data */ #include "pthread.h" #include "pthread_int.h" #include "reentrant.h" #include #include #include "../libc/include/extern.h" /* for _sys_setcontext() */ int pthread_setcontext(const ucontext_t *); __strong_alias(__libc_thr_setspecific,pthread_setspecific) __strong_alias(__libc_thr_getspecific,pthread_getspecific) __strong_alias(__libc_thr_curcpu,pthread_curcpu_np) __strong_alias(setcontext,pthread_setcontext) int pthread_setspecific(pthread_key_t key, const void *value) { pthread_t self; if (__predict_false(__uselibcstub)) return __libc_thr_setspecific_stub(key, value); self = pthread__self(); /* * We can't win here on constness. Having been given a * "const void *", we can only assign it to other const void *, * and return it from functions that are const void *, without * generating a warning. */ return pthread__add_specific(self, key, value); } void * pthread_getspecific(pthread_key_t key) { if (__predict_false(__uselibcstub)) return __libc_thr_getspecific_stub(key); return pthread__self()->pt_specific[key].pts_value; } unsigned int pthread_curcpu_np(void) { if (__predict_false(__uselibcstub)) return __libc_thr_curcpu_stub(); { const int curcpu = pthread__self()->pt_lwpctl->lc_curcpu; pthread__assert(curcpu != LWPCTL_CPU_NONE); pthread__assert(curcpu != LWPCTL_CPU_EXITED); pthread__assert(curcpu >= 0); return curcpu; } } /* * Override setcontext so that pthread private pointer is preserved */ int pthread_setcontext(const ucontext_t *ucp) { #ifdef _UC_TLSBASE ucontext_t uc; /* * Only copy and clear _UC_TLSBASE if it is set. */ if (ucp->uc_flags & _UC_TLSBASE) { uc = *ucp; uc.uc_flags &= ~_UC_TLSBASE; ucp = &uc; } #endif /* _UC_TLSBASE */ return _sys_setcontext(ucp); } ubject'>- don't complain if the pty is of the form pts/nchristos - fix off by one error in iovlen bounds checking - print the function name in the error message and make the error messages consistent - knf 2004-03-29Use pid_t for pids. From Jeff Ito in PR 24854.wiz 2003-08-07Move UCB-licensed code from 4-clause to 3-clause licence.agc Patches provided by Joel Baker in PR 22280, verified by myself. 2003-03-27Clear O_NONBLOCK correctly (previous code probably only worked becauselukem O_NONBLOCK and F_SETFL are the same value). Obtained from FreeBSD PR 8681 via FreeBSD's usr.bin/wall/ttymsg.c 1.5. 2002-08-16defend against malicious line in ut_line, which could cause unwanteditojun writes to anything under /dev. revoke setuid/gid privs earlier. From: xs@kittenz.org