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nptl: Remove exit-thread.h

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No function change.  The code is used only for Linux, besides
being included in generic code.
This commit is contained in:
Adhemerval Zanella 2021-05-27 09:11:10 -03:00
parent 642213e043
commit eaa53d0f77
5 changed files with 4 additions and 69 deletions
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1
csu/libc-start.c
View File

@ -30,7 +30,6 @@
#include <stdio.h>
#include <unistd.h>
#include <ldsodefs.h>
#include <exit-thread.h>
#include <libc-diag.h>
#include <libc-internal.h>
#include <elf/libc-early-init.h>

4
nptl/pthread_create.c
View File

@ -30,7 +30,6 @@
#include <libc-internal.h>
#include <resolv.h>
#include <kernel-features.h>
#include <exit-thread.h>
#include <default-sched.h>
#include <futex-internal.h>
#include <tls-setup.h>
@ -575,7 +574,8 @@ start_thread (void *arg)
The exit code is zero since in case all threads exit by calling
'pthread_exit' the exit status must be 0 (zero). */
__exit_thread ();
while (1)
INTERNAL_SYSCALL_CALL (exit, 0);
/* NOTREACHED */
}

28
sysdeps/generic/exit-thread.h
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@ -1,28 +0,0 @@
/* Call to terminate the current thread. Stub version.
Copyright (C) 2014-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/* This causes the current thread to exit, without affecting other
threads in the process if there are any. If there are no other
threads left, then this has the effect of _exit (0). */
static inline void __attribute__ ((noreturn, always_inline, unused))
__exit_thread (void)
{
while (1)
asm ("write me!");
}

3
sysdeps/nptl/libc_start_call_main.h
View File

@ -67,7 +67,8 @@ __libc_start_call_main (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL),
result = 0;
if (! atomic_decrement_and_test (&__nptl_nthreads))
/* Not much left to do but to exit the thread, not the process. */
__exit_thread ();
while (1)
INTERNAL_SYSCALL_CALL (exit, 0);
}
exit (result);

37
sysdeps/unix/sysv/linux/exit-thread.h
View File

@ -1,37 +0,0 @@
/* Call to terminate the current thread. Linux version.
Copyright (C) 2014-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
/* This causes the current thread to exit, without affecting other
threads in the process if there are any. If there are no other
threads left, then this has the effect of _exit (0). */
static inline void __attribute__ ((noreturn, always_inline, unused))
__exit_thread (void)
{
/* Doing this in a loop is mostly just to satisfy the compiler that the
function really qualifies as noreturn. It also means that in some
pathological situation where the system call does not get made or does
not work, the thread will simply spin rather than running off the end
of the caller and doing unexpectedly strange things. */
while (1)
{
INTERNAL_SYSCALL_CALL (exit, 0);
}
}