glibc/sysdeps/generic/sbrk.c
Ulrich Drepper ab26a24a17 Update.
* ctype/ctype-info.c: Declare _nl_C_LC_CTYPE_class,
	_nl_C_LC_CTYPE_class32, _nl_C_LC_CTYPE_toupper, _nl_C_LC_CTYPE_tolower,
	_nl_C_LC_CTYPE_class_upper, _nl_C_LC_CTYPE_class_lower,
	_nl_C_LC_CTYPE_class_alpha, _nl_C_LC_CTYPE_class_digit,
	_nl_C_LC_CTYPE_class_xdigit, _nl_C_LC_CTYPE_class_space,
	_nl_C_LC_CTYPE_class_print, _nl_C_LC_CTYPE_class_graph,
	_nl_C_LC_CTYPE_class_blank, _nl_C_LC_CTYPE_class_cntrl,
	_nl_C_LC_CTYPE_class_punct, _nl_C_LC_CTYPE_class_alnum,
	_nl_C_LC_CTYPE_map_toupper, _nl_C_LC_CTYPE_map_tolower, and
	_nl_C_LC_CTYPE_width: Declare as hidden.
	* include/locale.h: Declare _nl_locale_file_list.
	* locale/C-address.c: Define _nl_C_LC_ADDRESS as hidden.
	* locale/C-collate.c: Define _nl_C_LC_COLLATE as hidden.
	* locale/C-identification.c: Define _nl_C_LC_IDENTIFICATION as hidden.
	* locale/C-measurement.c: Define _nl_C_LC_MEASUREMENT as hidden.
	* locale/C-messages.c: Define _nl_C_LC_MESSAGES as hidden.
	* locale/C-monetary.c: Define _nl_C_LC_MONETARY as hidden.
	* locale/C-name.c: Define _nl_C_LC_NAME as hidden.
	* locale/C-numeric.c: Define _nl_C_LC_NUMERIC as hidden.
	* locale/C-paper.c: Define _nl_C_LC_PAPER as hidden.
	* locale/C-telephone.c: Define _nl_C_LC_TELEPHONE as hidden.
	* locale/C-time.c: Define _nl_C_LC_TIME as hidden.
	* locale/C-ctype.c: Define _nl_C_LC_CTYPE_class,
	_nl_C_LC_CTYPE_class32, _nl_C_LC_CTYPE_toupper, _nl_C_LC_CTYPE_tolower,
	_nl_C_LC_CTYPE_class_upper, _nl_C_LC_CTYPE_class_lower,
	_nl_C_LC_CTYPE_class_alpha, _nl_C_LC_CTYPE_class_digit,
	_nl_C_LC_CTYPE_class_xdigit, _nl_C_LC_CTYPE_class_space,
	_nl_C_LC_CTYPE_class_print, _nl_C_LC_CTYPE_class_graph,
	_nl_C_LC_CTYPE_class_blank, _nl_C_LC_CTYPE_class_cntrl,
	_nl_C_LC_CTYPE_class_punct, _nl_C_LC_CTYPE_class_alnum,
	_nl_C_LC_CTYPE_map_toupper, _nl_C_LC_CTYPE_map_tolower,
	_nl_C_LC_CTYPE_width, and as hidden.
	* locale/findlocale.c: Declare _nl_C as hidden.
	* locale/newlocale.c: Likewise.
	* locale/setlocale.c: Define _nl_C as hidden.  Remove declaration of
	_nl_locale_file_list.
	* locale/xlocale.c: Declare _nl_C_LC_CTYPE_class,
	_nl_C_LC_CTYPE_toupper, and _nl_C_LC_CTYPE_tolower as hidden.
	Define _nl_C_locobj as hidden.

	* malloc/mtrace.c (_mtrace_file): Define as hidden.
	(_mtrace_line): Likewise.

	* include/time.h: Declare __mon_yday as hidden.
	* time/strptime.c [_LIBC] (__mon_yday): Remove declaration.

	* libio/libioP.h: Declare __libio_codecvt as hidden.
	* libio/fileops.c: Declare __libio_translit as hidden.
	* libio/iofwide.c: Define __libio_translit as hidden.

	* login/getutent_r.c: Define __libc_utmp_lock as hidden.
	* login/getutid_r.c: Declare __libc_utmp_lock as hidden.
	* login/getutline_r.c: Likewise.
	* login/utmpname.c: Likewise.

	* login/utmp-private.h: Declare __libc_utmp_file_functions,
	__libc_utmp_unknown_functions, __libc_utmp_jump_table, and
	__libc_utmp_file_name as hidden.

	* locale/setlocale.c (__libc_setlocale_lock): Define as hidden.
	* locale/duplocale.c (__libc_setlocale_lock): Declare as hidden.
	* locale/freelocale.c: Likewise.
	* locale/lc-time.c: Likewise.

	* sysdeps/unix/bsd/getpt.c (__libc_ptyname1): Define as hidden.
	(__libc_ptyname2): Likewise.
	* sysdeps/unix/sysv/linux/ptsname.c (__libc_ptyname1): Declare as
	hidden.
	(__libc_ptyname2): Likewise.

	* sysdeps/generic/sbrk.c: Declare __libc_multiple_libcs as hidden.
	* sysdeps/arm/init-first.c (__libc_multiple_libcs): Define as hidden.
	* sysdeps/generic/init-first.c: Likewise.
	* sysdeps/i386/init-first.c: Likewise.
	* sysdeps/mach/hurd/i386/init-first.c: Likewise.
	* sysdeps/mach/hurd/mips/init-first.c: Likewise.
	* sysdeps/mach/hurd/powerpc/init-first.c: Likewise.
	* sysdeps/sh/init-first.c: Likewise.
	* sysdeps/unix/sysv/aix/init-first.c: Likewise.
	* sysdeps/unix/sysv/linux/init-first.c: Likewise.
2002-03-13 06:33:52 +00:00

57 lines
1.9 KiB
C

/* Copyright (C) 1991,1995,1996,1997,2000,2002 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 <unistd.h>
#include <errno.h>
/* Defined in brk.c. */
extern void *__curbrk;
extern int __brk (void *addr);
/* Defined in init-first.c. */
extern int __libc_multiple_libcs attribute_hidden;
/* Extend the process's data space by INCREMENT.
If INCREMENT is negative, shrink data space by - INCREMENT.
Return start of new space allocated, or -1 for errors. */
void *
__sbrk (intptr_t increment)
{
void *oldbrk;
/* If this is not part of the dynamic library or the library is used
via dynamic loading in a statically linked program update
__curbrk from the kernel's brk value. That way two separate
instances of __brk and __sbrk can share the heap, returning
interleaved pieces of it. */
if (__curbrk == NULL || __libc_multiple_libcs)
if (__brk (0) < 0) /* Initialize the break. */
return (void *) -1;
if (increment == 0)
return __curbrk;
oldbrk = __curbrk;
if (__brk (oldbrk + increment) < 0)
return (void *) -1;
return oldbrk;
}
weak_alias (__sbrk, sbrk)