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-rw-r--r--lib/libpthread/thread/thr_create.c345
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diff --git a/lib/libpthread/thread/thr_create.c b/lib/libpthread/thread/thr_create.c
deleted file mode 100644
index f4bd4758..0000000
--- a/lib/libpthread/thread/thr_create.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * Copyright (c) 2003 Daniel M. Eischen <deischen@gdeb.com>
- * 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. 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 AUTHOR 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.
- *
- * $FreeBSD$
- */
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <stddef.h>
-#include <sys/time.h>
-#include <machine/reg.h>
-#include <pthread.h>
-#include "thr_private.h"
-#include "libc_private.h"
-
-LT10_COMPAT_PRIVATE(_pthread_create);
-LT10_COMPAT_DEFAULT(pthread_create);
-
-static void free_thread(struct pthread *curthread, struct pthread *thread);
-static int create_stack(struct pthread_attr *pattr);
-static void free_stack(struct pthread_attr *pattr);
-static void thread_start(struct pthread *curthread,
- void *(*start_routine) (void *), void *arg);
-
-__weak_reference(_pthread_create, pthread_create);
-
-/*
- * Some notes on new thread creation and first time initializion
- * to enable multi-threading.
- *
- * There are basically two things that need to be done.
- *
- * 1) The internal library variables must be initialized.
- * 2) Upcalls need to be enabled to allow multiple threads
- * to be run.
- *
- * The first may be done as a result of other pthread functions
- * being called. When _thr_initial is null, _libpthread_init is
- * called to initialize the internal variables; this also creates
- * or sets the initial thread. It'd be nice to automatically
- * have _libpthread_init called on program execution so we don't
- * have to have checks throughout the library.
- *
- * The second part is only triggered by the creation of the first
- * thread (other than the initial/main thread). If the thread
- * being created is a scope system thread, then a new KSE/KSEG
- * pair needs to be allocated. Also, if upcalls haven't been
- * enabled on the initial thread's KSE, they must be now that
- * there is more than one thread; this could be delayed until
- * the initial KSEG has more than one thread.
- */
-int
-_pthread_create(pthread_t * thread, const pthread_attr_t * attr,
- void *(*start_routine) (void *), void *arg)
-{
- struct pthread *curthread, *new_thread;
- struct kse *kse = NULL;
- struct kse_group *kseg = NULL;
- kse_critical_t crit;
- int ret = 0;
-
- if (_thr_initial == NULL)
- _libpthread_init(NULL);
-
- /*
- * Turn on threaded mode, if failed, it is unnecessary to
- * do further work.
- */
- if (_kse_isthreaded() == 0 && _kse_setthreaded(1)) {
- return (EAGAIN);
- }
- curthread = _get_curthread();
-
- /*
- * Allocate memory for the thread structure.
- * Some functions use malloc, so don't put it
- * in a critical region.
- */
- if ((new_thread = _thr_alloc(curthread)) == NULL) {
- /* Insufficient memory to create a thread: */
- ret = EAGAIN;
- } else {
- /* Check if default thread attributes are required: */
- if (attr == NULL || *attr == NULL)
- /* Use the default thread attributes: */
- new_thread->attr = _pthread_attr_default;
- else {
- new_thread->attr = *(*attr);
- if ((*attr)->sched_inherit == PTHREAD_INHERIT_SCHED) {
- /* inherit scheduling contention scop */
- if (curthread->attr.flags & PTHREAD_SCOPE_SYSTEM)
- new_thread->attr.flags |= PTHREAD_SCOPE_SYSTEM;
- else
- new_thread->attr.flags &= ~PTHREAD_SCOPE_SYSTEM;
- /*
- * scheduling policy and scheduling parameters will be
- * inherited in following code.
- */
- }
- }
- if (_thread_scope_system > 0)
- new_thread->attr.flags |= PTHREAD_SCOPE_SYSTEM;
- else if ((_thread_scope_system < 0)
- && (thread != &_thr_sig_daemon))
- new_thread->attr.flags &= ~PTHREAD_SCOPE_SYSTEM;
- if (create_stack(&new_thread->attr) != 0) {
- /* Insufficient memory to create a stack: */
- ret = EAGAIN;
- _thr_free(curthread, new_thread);
- }
- else if (((new_thread->attr.flags & PTHREAD_SCOPE_SYSTEM) != 0) &&
- (((kse = _kse_alloc(curthread, 1)) == NULL)
- || ((kseg = _kseg_alloc(curthread)) == NULL))) {
- /* Insufficient memory to create a new KSE/KSEG: */
- ret = EAGAIN;
- if (kse != NULL) {
- kse->k_kcb->kcb_kmbx.km_flags |= KMF_DONE;
- _kse_free(curthread, kse);
- }
- free_stack(&new_thread->attr);
- _thr_free(curthread, new_thread);
- }
- else {
- if (kseg != NULL) {
- /* Add the KSE to the KSEG's list of KSEs. */
- TAILQ_INSERT_HEAD(&kseg->kg_kseq, kse, k_kgqe);
- kseg->kg_ksecount = 1;
- kse->k_kseg = kseg;
- kse->k_schedq = &kseg->kg_schedq;
- }
- /*
- * Write a magic value to the thread structure
- * to help identify valid ones:
- */
- new_thread->magic = THR_MAGIC;
-
- new_thread->slice_usec = -1;
- new_thread->start_routine = start_routine;
- new_thread->arg = arg;
- new_thread->cancelflags = PTHREAD_CANCEL_ENABLE |
- PTHREAD_CANCEL_DEFERRED;
-
- /* No thread is wanting to join to this one: */
- new_thread->joiner = NULL;
-
- /*
- * Initialize the machine context.
- * Enter a critical region to get consistent context.
- */
- crit = _kse_critical_enter();
- THR_GETCONTEXT(&new_thread->tcb->tcb_tmbx.tm_context);
- /* Initialize the thread for signals: */
- new_thread->sigmask = curthread->sigmask;
- _kse_critical_leave(crit);
-
- new_thread->tcb->tcb_tmbx.tm_udata = new_thread;
- new_thread->tcb->tcb_tmbx.tm_context.uc_sigmask =
- new_thread->sigmask;
- new_thread->tcb->tcb_tmbx.tm_context.uc_stack.ss_size =
- new_thread->attr.stacksize_attr;
- new_thread->tcb->tcb_tmbx.tm_context.uc_stack.ss_sp =
- new_thread->attr.stackaddr_attr;
- makecontext(&new_thread->tcb->tcb_tmbx.tm_context,
- (void (*)(void))thread_start, 3, new_thread,
- start_routine, arg);
- /*
- * Check if this thread is to inherit the scheduling
- * attributes from its parent:
- */
- if (new_thread->attr.sched_inherit == PTHREAD_INHERIT_SCHED) {
- /*
- * Copy the scheduling attributes.
- * Lock the scheduling lock to get consistent
- * scheduling parameters.
- */
- THR_SCHED_LOCK(curthread, curthread);
- new_thread->base_priority =
- curthread->base_priority &
- ~THR_SIGNAL_PRIORITY;
- new_thread->attr.prio =
- curthread->base_priority &
- ~THR_SIGNAL_PRIORITY;
- new_thread->attr.sched_policy =
- curthread->attr.sched_policy;
- THR_SCHED_UNLOCK(curthread, curthread);
- } else {
- /*
- * Use just the thread priority, leaving the
- * other scheduling attributes as their
- * default values:
- */
- new_thread->base_priority =
- new_thread->attr.prio;
- }
- new_thread->active_priority = new_thread->base_priority;
- new_thread->inherited_priority = 0;
-
- /* Initialize the mutex queue: */
- TAILQ_INIT(&new_thread->mutexq);
-
- /* Initialise hooks in the thread structure: */
- new_thread->specific = NULL;
- new_thread->specific_data_count = 0;
- new_thread->cleanup = NULL;
- new_thread->flags = 0;
- new_thread->tlflags = 0;
- new_thread->sigbackout = NULL;
- new_thread->continuation = NULL;
- new_thread->wakeup_time.tv_sec = -1;
- new_thread->lock_switch = 0;
- sigemptyset(&new_thread->sigpend);
- new_thread->check_pending = 0;
- new_thread->locklevel = 0;
- new_thread->rdlock_count = 0;
- new_thread->sigstk.ss_sp = 0;
- new_thread->sigstk.ss_size = 0;
- new_thread->sigstk.ss_flags = SS_DISABLE;
- new_thread->oldsigmask = NULL;
-
- if (new_thread->attr.suspend == THR_CREATE_SUSPENDED) {
- new_thread->state = PS_SUSPENDED;
- new_thread->flags = THR_FLAGS_SUSPENDED;
- }
- else
- new_thread->state = PS_RUNNING;
-
- /*
- * System scope threads have their own kse and
- * kseg. Process scope threads are all hung
- * off the main process kseg.
- */
- if ((new_thread->attr.flags & PTHREAD_SCOPE_SYSTEM) == 0) {
- new_thread->kseg = _kse_initial->k_kseg;
- new_thread->kse = _kse_initial;
- }
- else {
- kse->k_curthread = NULL;
- kse->k_kseg->kg_flags |= KGF_SINGLE_THREAD;
- new_thread->kse = kse;
- new_thread->kseg = kse->k_kseg;
- kse->k_kcb->kcb_kmbx.km_udata = kse;
- kse->k_kcb->kcb_kmbx.km_curthread = NULL;
- }
-
- /*
- * Schedule the new thread starting a new KSEG/KSE
- * pair if necessary.
- */
- ret = _thr_schedule_add(curthread, new_thread);
- if (ret != 0)
- free_thread(curthread, new_thread);
- else {
- /* Return a pointer to the thread structure: */
- (*thread) = new_thread;
- }
- }
- }
-
- /* Return the status: */
- return (ret);
-}
-
-static void
-free_thread(struct pthread *curthread, struct pthread *thread)
-{
- free_stack(&thread->attr);
- if ((thread->attr.flags & PTHREAD_SCOPE_SYSTEM) != 0) {
- /* Free the KSE and KSEG. */
- _kseg_free(thread->kseg);
- _kse_free(curthread, thread->kse);
- }
- _thr_free(curthread, thread);
-}
-
-static int
-create_stack(struct pthread_attr *pattr)
-{
- int ret;
-
- /* Check if a stack was specified in the thread attributes: */
- if ((pattr->stackaddr_attr) != NULL) {
- pattr->guardsize_attr = 0;
- pattr->flags |= THR_STACK_USER;
- ret = 0;
- }
- else
- ret = _thr_stack_alloc(pattr);
- return (ret);
-}
-
-static void
-free_stack(struct pthread_attr *pattr)
-{
- struct kse *curkse;
- kse_critical_t crit;
-
- if ((pattr->flags & THR_STACK_USER) == 0) {
- crit = _kse_critical_enter();
- curkse = _get_curkse();
- KSE_LOCK_ACQUIRE(curkse, &_thread_list_lock);
- /* Stack routines don't use malloc/free. */
- _thr_stack_free(pattr);
- KSE_LOCK_RELEASE(curkse, &_thread_list_lock);
- _kse_critical_leave(crit);
- }
-}
-
-static void
-thread_start(struct pthread *curthread, void *(*start_routine) (void *),
- void *arg)
-{
- /* Run the current thread's start routine with argument: */
- pthread_exit(start_routine(arg));
-
- /* This point should never be reached. */
- PANIC("Thread has resumed after exit");
-}
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