85bfda41f7
causes infinite recursion while trying to initialize the internal library state. Instead, use a simple spinlock-based rwlock implementation. Make minor cancellation cleanups.
148 lines
3.8 KiB
C
148 lines
3.8 KiB
C
/*
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* Copyright (c) 1998 Richard Seaman, Jr.
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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 Richard Seaman, Jr.
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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 RICHARD SEAMAN, Jr. 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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*/
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#ifndef _THREAD_SAFE
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#define _THREAD_SAFE
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#endif
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/msg.h>
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#include <sys/ttycom.h>
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#include <time.h>
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#include "pthread.h"
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#include "internals.h"
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#ifndef NEWLIBC
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char * asctime (const struct tm *timeptr)
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{
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pthread_descr self = thread_self();
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return (asctime_r(timeptr, self->time_buf));
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}
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char * ctime(const time_t * const timep)
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{
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pthread_descr self = thread_self();
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return (ctime_r(timep, self->time_buf));
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}
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struct tm *localtime (const time_t * const timep)
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{
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pthread_descr self = thread_self();
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return (localtime_r(timep, &self->local_tm));
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}
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struct tm * gmtime(const time_t * const timep)
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{
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pthread_descr self = thread_self();
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return (gmtime_r(timep, &self->local_tm));
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}
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#endif
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/* The following wrappers impement cancallation points */
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#if __STDC__
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int msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg)
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#else
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int msgrcv(msqid, msgp, msgsz, msgtyp, msgflg)
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int msqid;
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void *msgp;
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size_t msgsz;
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long msgtyp;
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int msgflg;
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#endif
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{
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int ret;
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int oldtype;
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/* This is a cancellation point */
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pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype);
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ret = msgsys(3, msqid, msgp, msgsz, msgtyp, msgflg);
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/* This is a cancellation point */
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pthread_setcanceltype (oldtype, NULL);
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return (ret);
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}
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#if __STDC__
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int msgsnd(int msqid, void *msgp, size_t msgsz, int msgflg)
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#else
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int msgsnd(msqid, msgp, msgsz, msgflg)
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int msqid;
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void *msgp;
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size_t msgsz;
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int msgflg;
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#endif
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{
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int ret;
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int oldtype;
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/* This is a cancellation point */
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pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype);
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ret = msgsys(2, msqid, msgp, msgsz, msgflg);
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/* This is a cancellation point */
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pthread_setcanceltype (oldtype, NULL);
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return (ret);
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}
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#if __STDC__
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int tcdrain (int fd)
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#else
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int tcdrain (fd)
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int fd;
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#endif
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{
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int ret;
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int oldtype;
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/* This is a cancellation point */
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pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype);
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ret = ioctl(fd, TIOCDRAIN, 0);
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/* This is a cancellation point */
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pthread_setcanceltype (oldtype, NULL);
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return (ret);
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}
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