mirror of
https://sourceware.org/git/glibc.git
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* stdlib/Makefile (routines): Add quick_exit, at_quick_exit, and
cxa_at_quick_exit. (static-only-routines): Add at_quick_exit. * stdlib/Versions: Export quick_exit and __cxa_at_quick_exit for GLIBC_2.10. * stdlib/quick_exit.c: New file. * stdlib/at_quick_exit.c: New file. * stdlib/cxa_at_quick_exit.c: New file. * stdlib/cxa_atexit.c (__cxa_atexit): Move body to new function. Call it appropriately. (__internal_atexit): New function. (__new_exitfn): Now takes parameter to point to the list to use. * stdlib/cxa_finalize.c: Remove quick_exit handlers, don't call them. * stdlib/exit.c (__run_exit_handlers): New function. Split from... (exit): ...here. Just call __run_exit_handlers appropriately. * stdlib/exit.h: Declare __quick_exit_funcs, __run_exit_handlers, __internal_atexit, __cxa_at_quick_exit. Adjust __new_exitfn. * stdlib/on_exit.c: Adjust call to __new_exitfn. * stdlib/stdlib.h: Declare at_quick_exit and quick_exit.
This commit is contained in:
Ulrich Drepper
parent
130ca12eb3
commit
610e67ed5a
20
ChangeLog
20
ChangeLog
@ -1,5 +1,25 @@
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2009-03-08 Ulrich Drepper <drepper@redhat.com>
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* stdlib/Makefile (routines): Add quick_exit, at_quick_exit, and
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cxa_at_quick_exit.
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(static-only-routines): Add at_quick_exit.
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* stdlib/Versions: Export quick_exit and __cxa_at_quick_exit for
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GLIBC_2.10.
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* stdlib/quick_exit.c: New file.
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* stdlib/at_quick_exit.c: New file.
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* stdlib/cxa_at_quick_exit.c: New file.
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* stdlib/cxa_atexit.c (__cxa_atexit): Move body to new function. Call
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it appropriately.
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(__internal_atexit): New function.
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(__new_exitfn): Now takes parameter to point to the list to use.
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* stdlib/cxa_finalize.c: Remove quick_exit handlers, don't call them.
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* stdlib/exit.c (__run_exit_handlers): New function. Split from...
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(exit): ...here. Just call __run_exit_handlers appropriately.
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* stdlib/exit.h: Declare __quick_exit_funcs, __run_exit_handlers,
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__internal_atexit, __cxa_at_quick_exit. Adjust __new_exitfn.
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* stdlib/on_exit.c: Adjust call to __new_exitfn.
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* stdlib/stdlib.h: Declare at_quick_exit and quick_exit.
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* po/id.po: Update from translation team.
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2009-03-07 Ulrich Drepper <drepper@redhat.com>
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5
NEWS
5
NEWS
@ -1,4 +1,4 @@
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GNU C Library NEWS -- history of user-visible changes. 2009-2-26
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GNU C Library NEWS -- history of user-visible changes. 2009-3-8
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Copyright (C) 1992-2008, 2009 Free Software Foundation, Inc.
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See the end for copying conditions.
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@ -18,6 +18,9 @@ Version 2.10
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* New POSIX 2008 interface: psiginfo
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Implemented by Ulrich Drepper.
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* New ISO C++1x interfaces: quick_exit, at_quick_exit
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Implemented by Ulrich Drepper.
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Version 2.9
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@ -1,4 +1,4 @@
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# Copyright (C) 1991-2006, 2007, 2008 Free Software Foundation, Inc.
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# Copyright (C) 1991-2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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@ -34,6 +34,7 @@ routines := \
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bsearch qsort msort \
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getenv putenv setenv secure-getenv \
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exit on_exit atexit cxa_atexit cxa_finalize old_atexit \
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quick_exit at_quick_exit cxa_at_quick_exit \
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abs labs llabs \
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div ldiv lldiv \
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mblen mbstowcs mbtowc wcstombs wctomb \
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@ -57,7 +58,7 @@ aux = grouping groupingwc tens_in_limb
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# These routines will be omitted from the libc shared object.
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# Instead the static object files will be included in a special archive
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# linked against when the shared library will be used.
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static-only-routines = atexit
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static-only-routines = atexit at_quick_exit
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distribute := exit.h grouping.h abort-instr.h isomac.c tst-fmtmsg.sh \
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allocalim.h
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@ -97,6 +97,9 @@ libc {
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GLIBC_2.8 {
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qsort_r;
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}
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GLIBC_2.10 {
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quick_exit; __cxa_at_quick_exit;
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}
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GLIBC_PRIVATE {
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# functions which have an additional interface since they are
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# are cancelable.
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50
stdlib/at_quick_exit.c
Normal file
50
stdlib/at_quick_exit.c
Normal file
@ -0,0 +1,50 @@
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/* Copyright (C) 1991,1996,1999,2001,2006,2009 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU Lesser General Public
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License, the Free Software Foundation gives you unlimited
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permission to link the compiled version of this file with other
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programs, and to distribute those programs without any restriction
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coming from the use of this file. (The GNU Lesser General Public
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License restrictions do apply in other respects; for example, they
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cover modification of the file, and distribution when not linked
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into another program.)
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Note that people who make modified versions of this file are not
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obligated to grant this special exception for their modified
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versions; it is their choice whether to do so. The GNU Lesser
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General Public License gives permission to release a modified
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version without this exception; this exception also makes it
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possible to release a modified version which carries forward this
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exception.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
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Lesser General Public License for more details.
|
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|
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdlib.h>
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#include "exit.h"
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/* This is defined by newer gcc version unique for each module. */
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extern void *__dso_handle __attribute__ ((__weak__));
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/* Register FUNC to be executed by `quick_exit'. */
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int
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at_quick_exit (void (*func) (void))
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{
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return __cxa_at_quick_exit ((void (*) (void *)) func,
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&__dso_handle == NULL ? NULL : __dso_handle);
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}
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32
stdlib/cxa_at_quick_exit.c
Normal file
32
stdlib/cxa_at_quick_exit.c
Normal file
@ -0,0 +1,32 @@
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/* Copyright (C) 2009 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
|
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License as published by the Free Software Foundation; either
|
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version 2.1 of the License, or (at your option) any later version.
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|
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The GNU C Library is distributed in the hope that it will be useful,
|
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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|
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You should have received a copy of the GNU Lesser General Public
|
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdlib.h>
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#include "exit.h"
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static struct exit_function_list initial_quick;
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struct exit_function_list *__quick_exit_funcs = &initial_quick;
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/* Register a function to be called by quick_exit. */
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int
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attribute_hidden
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__cxa_at_quick_exit (void (*func) (void *), void *d)
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{
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return __internal_atexit (func, NULL, d, &__quick_exit_funcs);
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}
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@ -1,4 +1,4 @@
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/* Copyright (C) 1999, 2001, 2002, 2005, 2006 Free Software Foundation, Inc.
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/* Copyright (C) 1999,2001,2002,2005,2006,2009 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -26,13 +26,13 @@
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#undef __cxa_atexit
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/* Register a function to be called by exit or when a shared library
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is unloaded. This function is only called from code generated by
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the C++ compiler. */
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int
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__cxa_atexit (void (*func) (void *), void *arg, void *d)
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attribute_hidden
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__internal_atexit (void (*func) (void *), void *arg, void *d,
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struct exit_function_list **listp)
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{
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struct exit_function *new = __new_exitfn ();
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struct exit_function *new = __new_exitfn (listp);
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if (new == NULL)
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return -1;
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@ -47,6 +47,16 @@ __cxa_atexit (void (*func) (void *), void *arg, void *d)
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new->flavor = ef_cxa;
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return 0;
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}
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/* Register a function to be called by exit or when a shared library
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is unloaded. This function is only called from code generated by
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the C++ compiler. */
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int
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__cxa_atexit (void (*func) (void *), void *arg, void *d)
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{
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return __internal_atexit (func, arg, d, &__exit_funcs);
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}
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INTDEF(__cxa_atexit)
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@ -59,7 +69,7 @@ struct exit_function_list *__exit_funcs = &initial;
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uint64_t __new_exitfn_called;
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struct exit_function *
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__new_exitfn (void)
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__new_exitfn (struct exit_function_list **listp)
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{
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struct exit_function_list *p = NULL;
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struct exit_function_list *l;
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@ -68,7 +78,7 @@ __new_exitfn (void)
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__libc_lock_lock (lock);
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for (l = __exit_funcs; l != NULL; p = l, l = l->next)
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for (l = *listp; l != NULL; p = l, l = l->next)
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{
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for (i = l->idx; i > 0; --i)
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if (l->fns[i - 1].flavor != ef_free)
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@ -92,8 +102,8 @@ __new_exitfn (void)
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calloc (1, sizeof (struct exit_function_list));
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if (p != NULL)
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{
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p->next = __exit_funcs;
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__exit_funcs = p;
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p->next = *listp;
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*listp = p;
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}
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}
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@ -1,4 +1,4 @@
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/* Copyright (C) 1999,2001,2002,2003,2005,2006 Free Software Foundation, Inc.
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/* Copyright (C) 1999,2001-2003,2005,2006,2009 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -63,6 +63,16 @@ __cxa_finalize (void *d)
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}
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}
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/* Also remove the quick_exit handlers, but do not call them. */
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for (funcs = __quick_exit_funcs; funcs; funcs = funcs->next)
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{
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struct exit_function *f;
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for (f = &funcs->fns[funcs->idx - 1]; f >= &funcs->fns[0]; --f)
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if (d == NULL || d == f->func.cxa.dso_handle)
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f->flavor = ef_free;
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}
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/* Remove the registered fork handlers. We do not have to
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unregister anything if the program is going to terminate anyway. */
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#ifdef UNREGISTER_ATFORK
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@ -1,4 +1,5 @@
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||||
/* Copyright (C) 1991,95,96,97,99,2001,2002,2005 Free Software Foundation, Inc.
|
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/* Copyright (C) 1991,95,96,97,99,2001,2002,2005,2009
|
||||
Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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|
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The GNU C Library is free software; you can redistribute it and/or
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@ -30,20 +31,22 @@ DEFINE_HOOK (__libc_atexit, (void))
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in the reverse of the order in which they were registered
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perform stdio cleanup, and terminate program execution with STATUS. */
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void
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exit (int status)
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attribute_hidden
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__run_exit_handlers (int status, struct exit_function_list **listp,
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bool run_list_atexit)
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{
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/* We do it this way to handle recursive calls to exit () made by
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the functions registered with `atexit' and `on_exit'. We call
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everyone on the list and use the status value in the last
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exit (). */
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||||
while (__exit_funcs != NULL)
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while (*listp != NULL)
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{
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struct exit_function_list *old;
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struct exit_function_list *cur = *listp;
|
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|
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while (__exit_funcs->idx > 0)
|
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while (cur->idx > 0)
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{
|
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const struct exit_function *const f =
|
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&__exit_funcs->fns[--__exit_funcs->idx];
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&cur->fns[--cur->idx];
|
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switch (f->flavor)
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{
|
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void (*atfct) (void);
|
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@ -77,16 +80,23 @@ exit (int status)
|
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}
|
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}
|
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|
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old = __exit_funcs;
|
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__exit_funcs = __exit_funcs->next;
|
||||
if (__exit_funcs != NULL)
|
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*listp = cur->next;
|
||||
if (*listp != NULL)
|
||||
/* Don't free the last element in the chain, this is the statically
|
||||
allocate element. */
|
||||
free (old);
|
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free (cur);
|
||||
}
|
||||
|
||||
if (run_list_atexit)
|
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RUN_HOOK (__libc_atexit, ());
|
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|
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_exit (status);
|
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}
|
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|
||||
|
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void
|
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exit (int status)
|
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{
|
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__run_exit_handlers (status, __exit_funcs, true);
|
||||
}
|
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libc_hidden_def (exit)
|
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|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (C) 1991,1996,1997,1999,2001,2002,2006
|
||||
/* Copyright (C) 1991,1996,1997,1999,2001,2002,2006,2009
|
||||
Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
@ -20,6 +20,7 @@
|
||||
#ifndef _EXIT_H
|
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#define _EXIT_H 1
|
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|
||||
#include <stdbool.h>
|
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#include <stdint.h>
|
||||
|
||||
enum
|
||||
@ -59,8 +60,19 @@ struct exit_function_list
|
||||
struct exit_function fns[32];
|
||||
};
|
||||
extern struct exit_function_list *__exit_funcs attribute_hidden;
|
||||
extern struct exit_function_list *__quick_exit_funcs attribute_hidden;
|
||||
|
||||
extern struct exit_function *__new_exitfn (void);
|
||||
extern struct exit_function *__new_exitfn (struct exit_function_list **listp);
|
||||
extern uint64_t __new_exitfn_called attribute_hidden;
|
||||
|
||||
extern void __run_exit_handlers (int status, struct exit_function_list **listp,
|
||||
bool run_list_atexit) attribute_hidden;
|
||||
|
||||
extern int __internal_atexit (void (*func) (void *), void *arg, void *d,
|
||||
struct exit_function_list **listp)
|
||||
attribute_hidden;
|
||||
extern int __cxa_at_quick_exit (void (*func) (void *), void *d)
|
||||
attribute_hidden;
|
||||
|
||||
|
||||
#endif /* exit.h */
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (C) 1991, 1996, 2005 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 1991, 1996, 2005, 2009 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
|
||||
@ -25,7 +25,7 @@
|
||||
int
|
||||
__on_exit (void (*func) (int status, void *arg), void *arg)
|
||||
{
|
||||
struct exit_function *new = __new_exitfn ();
|
||||
struct exit_function *new = __new_exitfn (&__exit_funcs);
|
||||
|
||||
if (new == NULL)
|
||||
return -1;
|
||||
|
||||
30
stdlib/quick_exit.c
Normal file
30
stdlib/quick_exit.c
Normal file
@ -0,0 +1,30 @@
|
||||
/* Copyright (C) 2009 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, write to the Free
|
||||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA. */
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
#include <sysdep.h>
|
||||
#include "exit.h"
|
||||
|
||||
|
||||
void
|
||||
quick_exit (int status)
|
||||
{
|
||||
__run_exit_handlers (status, __quick_exit_funcs, false);
|
||||
}
|
||||
@ -515,6 +515,18 @@ extern void abort (void) __THROW __attribute__ ((__noreturn__));
|
||||
|
||||
/* Register a function to be called when `exit' is called. */
|
||||
extern int atexit (void (*__func) (void)) __THROW __nonnull ((1));
|
||||
|
||||
#ifdef __USE_GNU
|
||||
// XXX There should be a macro to signal with C++ revision is used.
|
||||
// XXX This function is in the C++1x revision.
|
||||
/* Register a function to be called when `quick_exit' is called. */
|
||||
# ifdef __cplusplus
|
||||
extern "C++" int at_quick_exit (void (*__func) (void))
|
||||
__THROW __asm ("at_quick_exit") __nonnull ((1));
|
||||
# else
|
||||
extern int at_quick_exit (void (*__func) (void)) __THROW __nonnull ((1));
|
||||
# endif
|
||||
#endif
|
||||
__END_NAMESPACE_STD
|
||||
|
||||
#ifdef __USE_MISC
|
||||
@ -526,9 +538,18 @@ extern int on_exit (void (*__func) (int __status, void *__arg), void *__arg)
|
||||
|
||||
__BEGIN_NAMESPACE_STD
|
||||
/* Call all functions registered with `atexit' and `on_exit',
|
||||
in the reverse of the order in which they were registered
|
||||
in the reverse of the order in which they were registered,
|
||||
perform stdio cleanup, and terminate program execution with STATUS. */
|
||||
extern void exit (int __status) __THROW __attribute__ ((__noreturn__));
|
||||
|
||||
#ifdef __USE_GNU
|
||||
// XXX There should be a macro to signal with C++ revision is used.
|
||||
// XXX This function is in the C++1x revision.
|
||||
/* Call all functions registered with `at_quick_exit' in the reverse
|
||||
of the order in which they were registered and terminate program
|
||||
execution with STATUS. */
|
||||
extern void quick_exit (int __status) __THROW __attribute__ ((__noreturn__));
|
||||
#endif
|
||||
__END_NAMESPACE_STD
|
||||
|
||||
#ifdef __USE_ISOC99
|
||||
|
||||
Loading…
Reference in New Issue
Block a user