diff options
Diffstat (limited to 'lib/libpthread/thread/thr_sig.c')
| -rw-r--r-- | lib/libpthread/thread/thr_sig.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/lib/libpthread/thread/thr_sig.c b/lib/libpthread/thread/thr_sig.c deleted file mode 100644 index e73d5a2..0000000 --- a/lib/libpthread/thread/thr_sig.c +++ /dev/null @@ -1,167 +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 <signal.h> -#include <fcntl.h> -#include <unistd.h> -#include <errno.h> -#ifdef _THREAD_SAFE -#include <pthread.h> -#include "pthread_private.h" - -void -_thread_sig_handler(int sig, int code, struct sigcontext * scp) -{ - char c; - int i; - pthread_t pthread; - - /* - * Check if the pthread kernel has unblocked signals (or is about to) - * and was on its way into a _thread_sys_select when the current - * signal interrupted it: - */ - if (_thread_kern_in_select) { - /* Cast the signal number to a character variable: */ - c = sig; - - /* - * Write the signal number to the kernel pipe so that it will - * be ready to read when this signal handler returns. This - * means that the _thread_sys_select call will complete - * immediately. - */ - if (_thread_sys_write(_thread_kern_pipe[1], &c, 1) != 1) { - } - } - /* Check if the signal requires a dump of thread information: */ - if (sig == SIGINFO) { - /* Dump thread information to file: */ - _thread_dump_info(); - } else { - /* Handle depending on signal type: */ - switch (sig) { - /* Interval timer used for timeslicing: */ - case SIGVTALRM: - /* - * Don't add the signal to any thread. Just want to - * call the scheduler: - */ - break; - - /* Child termination: */ - case SIGCHLD: - /* - * Enter a loop to process each thread in the linked - * list: - */ - for (pthread = _thread_link_list; pthread != NULL; - pthread = pthread->nxt) { - /* - * Add the signal to the set of pending - * signals: - */ - pthread->sigpend[sig] += 1; - if (pthread->state == PS_WAIT_WAIT) { - /* Reset the error: */ - /* There should be another flag so that this is not required! ### */ - _thread_seterrno(pthread, 0); - - /* Change the state of the thread to run: */ - PTHREAD_NEW_STATE(pthread,PS_RUNNING); - } - } - - /* - * Go through the file list and set all files - * to non-blocking again in case the child - * set some of them to block. Sigh. - */ - for (i = 0; i < _thread_dtablesize; i++) { - /* Check if this file is used: */ - if (_thread_fd_table[i] != NULL) { - /* Set the file descriptor to non-blocking: */ - _thread_sys_fcntl(i, F_SETFL, _thread_fd_table[i]->flags | O_NONBLOCK); - } - } - break; - - /* Signals specific to the running thread: */ - case SIGBUS: - case SIGEMT: - case SIGFPE: - case SIGILL: - case SIGPIPE: - case SIGSEGV: - case SIGSYS: - /* Add the signal to the set of pending signals: */ - _thread_run->sigpend[sig] += 1; - break; - - /* Signals to send to all threads: */ - default: - /* - * Enter a loop to process each thread in the linked - * list: - */ - for (pthread = _thread_link_list; pthread != NULL; - pthread = pthread->nxt) { - /* - * Add the signal to the set of pending - * signals: - */ - pthread->sigpend[sig] += 1; - } - break; - } - - /* Check if the kernel is not locked: */ - if (_thread_run != &_thread_kern_thread) { - /* - * Schedule the next thread. This function is not - * expected to return because it will do a longjmp - * instead. - */ - _thread_kern_sched(scp); - - /* - * This point should not be reached, so abort the - * process: - */ - PANIC("Returned to signal function from scheduler"); - } - } - - /* Returns nothing. */ - return; -} -#endif |
