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2.5-18.1

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This commit is contained in:
Jakub Jelinek
2007-07-12 18:26:36 +00:00
parent 7d58530341
commit 0ecb606cb6
6215 changed files with 494638 additions and 305010 deletions
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109
nptl/pthread_create.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
/* Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@ -52,7 +52,7 @@ unsigned int __nptl_nthreads = 1;
#include "allocatestack.c"
/* Code to create the thread. */
#include "createthread.c"
#include <createthread.c>
struct pthread *
@ -206,6 +206,15 @@ __free_tcb (struct pthread *pd)
running thread is gone. */
abort ();
/* Free TPP data. */
if (__builtin_expect (pd->tpp != NULL, 0))
{
struct priority_protection_data *tpp = pd->tpp;
pd->tpp = NULL;
free (tpp);
}
/* Queue the stack memory block for reuse and exit the process. The
kernel will signal via writing to the address returned by
QUEUE-STACK when the stack is available. */
@ -229,6 +238,32 @@ start_thread (void *arg)
/* Initialize resolver state pointer. */
__resp = &pd->res;
#ifdef __NR_set_robust_list
# ifndef __ASSUME_SET_ROBUST_LIST
if (__set_robust_list_avail >= 0)
# endif
{
INTERNAL_SYSCALL_DECL (err);
/* This call should never fail because the initial call in init.c
succeeded. */
INTERNAL_SYSCALL (set_robust_list, err, 2, &pd->robust_head,
sizeof (struct robust_list_head));
}
#endif
/* If the parent was running cancellation handlers while creating
the thread the new thread inherited the signal mask. Reset the
cancellation signal mask. */
if (__builtin_expect (pd->parent_cancelhandling & CANCELING_BITMASK, 0))
{
INTERNAL_SYSCALL_DECL (err);
sigset_t mask;
__sigemptyset (&mask);
__sigaddset (&mask, SIGCANCEL);
(void) INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_UNBLOCK, &mask,
NULL, _NSIG / 8);
}
/* This is where the try/finally block should be created. For
compilers without that support we do use setjmp. */
struct pthread_unwind_buf unwind_buf;
@ -310,10 +345,52 @@ start_thread (void *arg)
the breakpoint reports TD_THR_RUN state rather than TD_THR_ZOMBIE. */
atomic_bit_set (&pd->cancelhandling, EXITING_BIT);
#ifndef __ASSUME_SET_ROBUST_LIST
/* If this thread has any robust mutexes locked, handle them now. */
# if __WORDSIZE == 64
void *robust = pd->robust_head.list;
# else
__pthread_slist_t *robust = pd->robust_list.__next;
# endif
/* We let the kernel do the notification if it is able to do so.
If we have to do it here there for sure are no PI mutexes involved
since the kernel support for them is even more recent. */
if (__set_robust_list_avail < 0
&& __builtin_expect (robust != (void *) &pd->robust_head, 0))
{
do
{
struct __pthread_mutex_s *this = (struct __pthread_mutex_s *)
((char *) robust - offsetof (struct __pthread_mutex_s,
__list.__next));
robust = *((void **) robust);
# ifdef __PTHREAD_MUTEX_HAVE_PREV
this->__list.__prev = NULL;
# endif
this->__list.__next = NULL;
lll_robust_mutex_dead (this->__lock);
}
while (robust != (void *) &pd->robust_head);
}
#endif
/* If the thread is detached free the TCB. */
if (IS_DETACHED (pd))
/* Free the TCB. */
__free_tcb (pd);
else if (__builtin_expect (pd->cancelhandling & SETXID_BITMASK, 0))
{
/* Some other thread might call any of the setXid functions and expect
us to reply. In this case wait until we did that. */
do
lll_futex_wait (&pd->setxid_futex, 0);
while (pd->cancelhandling & SETXID_BITMASK);
/* Reset the value so that the stack can be reused. */
pd->setxid_futex = 0;
}
/* We cannot call '_exit' here. '_exit' will terminate the process.
@ -347,17 +424,15 @@ __pthread_create_2_1 (newthread, attr, start_routine, arg)
void *arg;
{
STACK_VARIABLES;
const struct pthread_attr *iattr;
struct pthread *pd;
int err;
iattr = (struct pthread_attr *) attr;
const struct pthread_attr *iattr = (struct pthread_attr *) attr;
if (iattr == NULL)
/* Is this the best idea? On NUMA machines this could mean
accessing far-away memory. */
iattr = &default_attr;
err = ALLOCATE_STACK (iattr, &pd);
struct pthread *pd = NULL;
int err = ALLOCATE_STACK (iattr, &pd);
if (__builtin_expect (err != 0, 0))
/* Something went wrong. Maybe a parameter of the attributes is
invalid or we could not allocate memory. */
@ -401,19 +476,29 @@ __pthread_create_2_1 (newthread, attr, start_routine, arg)
pd->schedpolicy = self->schedpolicy;
pd->schedparam = self->schedparam;
/* Copy the stack guard canary. */
#ifdef THREAD_COPY_STACK_GUARD
THREAD_COPY_STACK_GUARD (pd);
#endif
/* Copy the pointer guard value. */
#ifdef THREAD_COPY_POINTER_GUARD
THREAD_COPY_POINTER_GUARD (pd);
#endif
/* Determine scheduling parameters for the thread. */
if (attr != NULL
&& __builtin_expect ((iattr->flags & ATTR_FLAG_NOTINHERITSCHED) != 0, 0)
&& (iattr->flags & (ATTR_FLAG_SCHED_SET | ATTR_FLAG_POLICY_SET)) != 0)
{
INTERNAL_SYSCALL_DECL (err);
INTERNAL_SYSCALL_DECL (scerr);
/* Use the scheduling parameters the user provided. */
if (iattr->flags & ATTR_FLAG_POLICY_SET)
pd->schedpolicy = iattr->schedpolicy;
else if ((pd->flags & ATTR_FLAG_POLICY_SET) == 0)
{
pd->schedpolicy = INTERNAL_SYSCALL (sched_getscheduler, err, 1, 0);
pd->schedpolicy = INTERNAL_SYSCALL (sched_getscheduler, scerr, 1, 0);
pd->flags |= ATTR_FLAG_POLICY_SET;
}
@ -422,14 +507,14 @@ __pthread_create_2_1 (newthread, attr, start_routine, arg)
sizeof (struct sched_param));
else if ((pd->flags & ATTR_FLAG_SCHED_SET) == 0)
{
INTERNAL_SYSCALL (sched_getparam, err, 2, 0, &pd->schedparam);
INTERNAL_SYSCALL (sched_getparam, scerr, 2, 0, &pd->schedparam);
pd->flags |= ATTR_FLAG_SCHED_SET;
}
/* Check for valid priorities. */
int minprio = INTERNAL_SYSCALL (sched_get_priority_min, err, 1,
int minprio = INTERNAL_SYSCALL (sched_get_priority_min, scerr, 1,
iattr->schedpolicy);
int maxprio = INTERNAL_SYSCALL (sched_get_priority_max, err, 1,
int maxprio = INTERNAL_SYSCALL (sched_get_priority_max, scerr, 1,
iattr->schedpolicy);
if (pd->schedparam.sched_priority < minprio
|| pd->schedparam.sched_priority > maxprio)