diff options
Diffstat (limited to 'lib/libpthread/thread/thr_select.c')
| -rw-r--r-- | lib/libpthread/thread/thr_select.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/lib/libpthread/thread/thr_select.c b/lib/libpthread/thread/thr_select.c deleted file mode 100644 index 7db3ed2..0000000 --- a/lib/libpthread/thread/thr_select.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>. - * All rights reserved. - * - * 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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by John Birrell. - * 4. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL 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 REGENTS 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 <unistd.h> -#include <errno.h> -#include <string.h> -#include <sys/types.h> -#include <sys/time.h> -#ifdef _THREAD_SAFE -#include <pthread.h> -#include "pthread_private.h" - -int -select(int numfds, fd_set * readfds, fd_set * writefds, - fd_set * exceptfds, struct timeval * timeout) -{ - fd_set read_locks, write_locks, rdwr_locks; - struct timespec ts; - struct timeval zero_timeout = {0, 0}; - int i, ret = 0, got_all_locks = 1; - struct pthread_select_data data; - - if (numfds > _thread_dtablesize) { - numfds = _thread_dtablesize; - } - /* Check if a timeout was specified: */ - if (timeout) { - /* Convert the timeval to a timespec: */ - TIMEVAL_TO_TIMESPEC(timeout, &ts); - - /* Set the wake up time: */ - _thread_kern_set_timeout(&ts); - } else { - /* Wait for ever: */ - _thread_kern_set_timeout(NULL); - } - - FD_ZERO(&read_locks); - FD_ZERO(&write_locks); - FD_ZERO(&rdwr_locks); - - /* lock readfds */ - if (readfds || writefds || exceptfds) { - for (i = 0; i < numfds; i++) { - if ((readfds && (FD_ISSET(i, readfds))) || (exceptfds && FD_ISSET(i, exceptfds))) { - if (writefds && FD_ISSET(i, writefds)) { - if ((ret = _thread_fd_lock(i, FD_RDWR, NULL, __FILE__, __LINE__)) != 0) { - got_all_locks = 0; - break; - } - FD_SET(i, &rdwr_locks); - } else { - if ((ret = _thread_fd_lock(i, FD_READ, NULL, __FILE__, __LINE__)) != 0) { - got_all_locks = 0; - break; - } - FD_SET(i, &read_locks); - } - } else { - if (writefds && FD_ISSET(i, writefds)) { - if ((ret = _thread_fd_lock(i, FD_WRITE, NULL, __FILE__, __LINE__)) != 0) { - got_all_locks = 0; - break; - } - FD_SET(i, &write_locks); - } - } - } - } - if (got_all_locks) { - data.nfds = numfds; - FD_ZERO(&data.readfds); - FD_ZERO(&data.writefds); - FD_ZERO(&data.exceptfds); - if (readfds != NULL) { - memcpy(&data.readfds, readfds, sizeof(data.readfds)); - } - if (writefds != NULL) { - memcpy(&data.writefds, writefds, sizeof(data.writefds)); - } - if (exceptfds != NULL) { - memcpy(&data.exceptfds, exceptfds, sizeof(data.exceptfds)); - } - if ((ret = _thread_sys_select(data.nfds, &data.readfds, &data.writefds, &data.exceptfds, &zero_timeout)) == 0) { - data.nfds = numfds; - FD_ZERO(&data.readfds); - FD_ZERO(&data.writefds); - FD_ZERO(&data.exceptfds); - if (readfds != NULL) { - memcpy(&data.readfds, readfds, sizeof(data.readfds)); - } - if (writefds != NULL) { - memcpy(&data.writefds, writefds, sizeof(data.writefds)); - } - if (exceptfds != NULL) { - memcpy(&data.exceptfds, exceptfds, sizeof(data.exceptfds)); - } - _thread_run->data.select_data = &data; - _thread_kern_sched_state(PS_SELECT_WAIT, __FILE__, __LINE__); - ret = data.nfds; - } - } - /* clean up the locks */ - for (i = 0; i < numfds; i++) - if (FD_ISSET(i, &read_locks)) - _thread_fd_unlock(i, FD_READ); - for (i = 0; i < numfds; i++) - if (FD_ISSET(i, &rdwr_locks)) - _thread_fd_unlock(i, FD_RDWR); - for (i = 0; i < numfds; i++) - if (FD_ISSET(i, &write_locks)) - _thread_fd_unlock(i, FD_WRITE); - - if (ret > 0) { - if (readfds != NULL) { - for (i = 0; i < numfds; i++) { - if (FD_ISSET(i, readfds) && - !FD_ISSET(i, &data.readfds)) { - FD_CLR(i, readfds); - } - } - } - if (writefds != NULL) { - for (i = 0; i < numfds; i++) { - if (FD_ISSET(i, writefds) && - !FD_ISSET(i, &data.writefds)) { - FD_CLR(i, writefds); - } - } - } - if (exceptfds != NULL) { - for (i = 0; i < numfds; i++) { - if (FD_ISSET(i, exceptfds) && - !FD_ISSET(i, &data.exceptfds)) { - FD_CLR(i, exceptfds); - } - } - } - } - - return (ret); -} -#endif |
