090b336154
is system bound thread and when it is blocked, no upcall is generated. o Add ability to libkse to allow it run in pure 1:1 threading mode, defining SYSTEM_SCOPE_ONLY in Makefile can turn on this option. o Eliminate code for installing dummy signal handler for sigwait call. o Add hash table to find thread. Reviewed by: deischen
75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
/*
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* Copyright (c) 1999 Daniel Eischen <eischen@vigrid.com>.
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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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* 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by John Birrell.
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* 4. Neither the name of the author nor the names of any co-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 DANIEL EISCHEN 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 AUTHOR 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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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/signalvar.h>
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#include <signal.h>
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#include <errno.h>
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#include <pthread.h>
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#include "thr_private.h"
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__weak_reference(_sigpending, sigpending);
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int
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_sigpending(sigset_t *set)
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{
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struct pthread *curthread = _get_curthread();
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kse_critical_t crit;
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sigset_t sigset;
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int ret = 0;
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/* Check for a null signal set pointer: */
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if (set == NULL) {
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/* Return an invalid argument: */
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ret = EINVAL;
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}
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else {
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if (!_kse_isthreaded() ||
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(curthread->attr.flags & PTHREAD_SCOPE_SYSTEM))
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return (__sys_sigpending(set));
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crit = _kse_critical_enter();
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KSE_SCHED_LOCK(curthread->kse, curthread->kseg);
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sigset = curthread->sigpend;
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KSE_SCHED_UNLOCK(curthread->kse, curthread->kseg);
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KSE_LOCK_ACQUIRE(curthread->kse, &_thread_signal_lock);
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SIGSETOR(sigset, _thr_proc_sigpending);
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KSE_LOCK_RELEASE(curthread->kse, &_thread_signal_lock);
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_kse_critical_leave(crit);
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*set = sigset;
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}
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/* Return the completion status: */
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return (ret);
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}
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