diff options
Diffstat (limited to 'lib/libpthread/thread/thr_init.c')
-rw-r--r-- | lib/libpthread/thread/thr_init.c | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/lib/libpthread/thread/thr_init.c b/lib/libpthread/thread/thr_init.c deleted file mode 100644 index 50f3bef8973a..000000000000 --- a/lib/libpthread/thread/thr_init.c +++ /dev/null @@ -1,284 +0,0 @@ -/* - * Copyright (c) 1995-1998 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. - * - */ - -/* Allocate space for global thread variables here: */ -#define GLOBAL_PTHREAD_PRIVATE - -#include <errno.h> -#include <stdlib.h> -#include <string.h> -#include <fcntl.h> -#include <paths.h> -#include <unistd.h> -#include <sys/time.h> -#include <sys/ttycom.h> -#ifdef _THREAD_SAFE -#include <machine/reg.h> -#include <pthread.h> -#include "pthread_private.h" - -#ifdef GCC_2_8_MADE_THREAD_AWARE -typedef void *** (*dynamic_handler_allocator)(); -extern void __set_dynamic_handler_allocator(dynamic_handler_allocator); - -static pthread_key_t except_head_key; - -typedef struct { - void **__dynamic_handler_chain; - void *top_elt[2]; -} except_struct; - -static void ***dynamic_allocator_handler_fn() -{ - except_struct *dh = (except_struct *)pthread_getspecific(except_head_key); - - if(dh == NULL) { - dh = (except_struct *)malloc( sizeof(except_struct) ); - memset(dh, '\0', sizeof(except_struct)); - dh->__dynamic_handler_chain= dh->top_elt; - pthread_setspecific(except_head_key, (void *)dh); - } - return &dh->__dynamic_handler_chain; -} -#endif /* GCC_2_8_MADE_THREAD_AWARE */ - -/* - * Threaded process initialization - */ -void -_thread_init(void) -{ - int fd; - int flags; - int i; - struct sigaction act; - - /* Check if this function has already been called: */ - if (_thread_initial) - /* Only initialise the threaded application once. */ - return; - - /* - * Check for the special case of this process running as - * or in place of init as pid = 1: - */ - if (getpid() == 1) { - /* - * Setup a new session for this process which is - * assumed to be running as root. - */ - if (setsid() == -1) - PANIC("Can't set session ID"); - if (revoke(_PATH_CONSOLE) != 0) - PANIC("Can't revoke console"); - if ((fd = _thread_sys_open(_PATH_CONSOLE, O_RDWR)) < 0) - PANIC("Can't open console"); - if (setlogin("root") == -1) - PANIC("Can't set login to root"); - if (_thread_sys_ioctl(fd,TIOCSCTTY, (char *) NULL) == -1) - PANIC("Can't set controlling terminal"); - if (_thread_sys_dup2(fd,0) == -1 || - _thread_sys_dup2(fd,1) == -1 || - _thread_sys_dup2(fd,2) == -1) - PANIC("Can't dup2"); - } - - /* Get the standard I/O flags before messing with them : */ - for (i = 0; i < 3; i++) - if ((_pthread_stdio_flags[i] = - _thread_sys_fcntl(i,F_GETFL, NULL)) == -1) - PANIC("Cannot get stdio flags"); - - /* - * Create a pipe that is written to by the signal handler to prevent - * signals being missed in calls to _select: - */ - if (_thread_sys_pipe(_thread_kern_pipe) != 0) { - /* Cannot create pipe, so abort: */ - PANIC("Cannot create kernel pipe"); - } - /* Get the flags for the read pipe: */ - else if ((flags = _thread_sys_fcntl(_thread_kern_pipe[0], F_GETFL, NULL)) == -1) { - /* Abort this application: */ - PANIC("Cannot get kernel read pipe flags"); - } - /* Make the read pipe non-blocking: */ - else if (_thread_sys_fcntl(_thread_kern_pipe[0], F_SETFL, flags | O_NONBLOCK) == -1) { - /* Abort this application: */ - PANIC("Cannot make kernel read pipe non-blocking"); - } - /* Get the flags for the write pipe: */ - else if ((flags = _thread_sys_fcntl(_thread_kern_pipe[1], F_GETFL, NULL)) == -1) { - /* Abort this application: */ - PANIC("Cannot get kernel write pipe flags"); - } - /* Make the write pipe non-blocking: */ - else if (_thread_sys_fcntl(_thread_kern_pipe[1], F_SETFL, flags | O_NONBLOCK) == -1) { - /* Abort this application: */ - PANIC("Cannot get kernel write pipe flags"); - } - /* Allocate memory for the thread structure of the initial thread: */ - else if ((_thread_initial = (pthread_t) malloc(sizeof(struct pthread))) == NULL) { - /* - * Insufficient memory to initialise this application, so - * abort: - */ - PANIC("Cannot allocate memory for initial thread"); - } else { - /* Zero the global kernel thread structure: */ - memset(&_thread_kern_thread, 0, sizeof(struct pthread)); - memset(_thread_initial, 0, sizeof(struct pthread)); - - /* Default the priority of the initial thread: */ - _thread_initial->pthread_priority = PTHREAD_DEFAULT_PRIORITY; - - /* Initialise the state of the initial thread: */ - _thread_initial->state = PS_RUNNING; - - /* Initialise the queue: */ - _thread_queue_init(&(_thread_initial->join_queue)); - - /* Initialise the rest of the fields: */ - _thread_initial->specific_data = NULL; - _thread_initial->cleanup = NULL; - _thread_initial->queue = NULL; - _thread_initial->qnxt = NULL; - _thread_initial->nxt = NULL; - _thread_initial->flags = 0; - _thread_initial->error = 0; - _thread_link_list = _thread_initial; - _thread_run = _thread_initial; - - /* Initialise the global signal action structure: */ - sigfillset(&act.sa_mask); - act.sa_handler = (void (*) ()) _thread_sig_handler; - act.sa_flags = 0; - - /* Enter a loop to get the existing signal status: */ - for (i = 1; i < NSIG; i++) { - /* Check for signals which cannot be trapped: */ - if (i == SIGKILL || i == SIGSTOP) { - } - - /* Get the signal handler details: */ - else if (_thread_sys_sigaction(i, NULL, - &_thread_sigact[i - 1]) != 0) { - /* - * Abort this process if signal - * initialisation fails: - */ - PANIC("Cannot read signal handler info"); - } - } - - /* - * Install the signal handler for the most important - * signals that the user-thread kernel needs. Actually - * SIGINFO isn't really needed, but it is nice to have. - */ - if (_thread_sys_sigaction(SIGVTALRM, &act, NULL) != 0 || - _thread_sys_sigaction(SIGINFO , &act, NULL) != 0 || - _thread_sys_sigaction(SIGCHLD , &act, NULL) != 0) { - /* - * Abort this process if signal initialisation fails: - */ - PANIC("Cannot initialise signal handler"); - } - - /* Get the table size: */ - if ((_thread_dtablesize = getdtablesize()) < 0) { - /* - * Cannot get the system defined table size, so abort - * this process. - */ - PANIC("Cannot get dtablesize"); - } - /* Allocate memory for the file descriptor table: */ - if ((_thread_fd_table = (struct fd_table_entry **) malloc(sizeof(struct fd_table_entry *) * _thread_dtablesize)) == NULL) { - /* - * Cannot allocate memory for the file descriptor - * table, so abort this process. - */ - PANIC("Cannot allocate memory for file descriptor table"); - } else { - /* - * Enter a loop to initialise the file descriptor - * table: - */ - for (i = 0; i < _thread_dtablesize; i++) { - /* Initialise the file descriptor table: */ - _thread_fd_table[i] = NULL; - } - } - } - -#ifdef GCC_2_8_MADE_THREAD_AWARE - /* Create the thread-specific data for the exception linked list. */ - if(pthread_key_create(&except_head_key, NULL) != 0) - PANIC("Failed to create thread specific execption head"); - - /* Setup the gcc exception handler per thread. */ - __set_dynamic_handler_allocator( dynamic_allocator_handler_fn ); -#endif /* GCC_2_8_MADE_THREAD_AWARE */ - - /* Initialise the garbage collector mutex and condition variable. */ - if (pthread_mutex_init(&_gc_mutex,NULL) != 0 || - pthread_cond_init(&_gc_cond,NULL) != 0) - PANIC("Failed to initialise garbage collector mutex or condvar"); - - return; -} - -/* - * Special start up code for NetBSD/Alpha - */ -#if defined(__NetBSD__) && defined(__alpha__) -int -main(int argc, char *argv[], char *env); - -int -_thread_main(int argc, char *argv[], char *env) -{ - _thread_init(); - return (main(argc, argv, env)); -} -#endif -#else -/* - * A stub for non-threaded programs. - */ -void -_thread_init(void) -{ -} -#endif |