mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 06:50:07 +00:00
c08bc50a60
2001-02-26 Ulrich Drepper <drepper@redhat.com> * dlfcn/Makefile (distribute): Add modatexit.c and modcxaatexit.c. (tests): Add tstatexit and tstcxaatexit. (module-names): Add modatexit and modcxaatexit. Add rules to build and run tstatexit and tstcxaatexit. * dlfcn/modatexit.c: New file. * dlfcn/modcxaatexit.c: New file. * dlfcn/tstatexit.c: New file. * dlfcn/tstcxaatexit.c: New file. * io/Makefile: Pass -DHAVE_DOT_HIDDEN to stat and mknod functions if .hidden is available. * io/stat.c: If .hidden is available use it to avoid exporting functions. * io/fstat.c: Likewise. * io/lstat.c: Likewise. * io/stat64.c: Likewise. * io/fstat64.c: Likewise. * io/lstat64.c: Likewise. * sysdeps/generic/mknod.c: Likewise. * malloc/mtrace.c: Use __cxa_atexit and not atexit. * sysdeps/generic/bb_init_func.c: Likewise. * sysdeps/generic/libc-start.c: Likewise. * stdlib/atexit.c (__new_exitfn): Move to cxa_atexit.c. (atexit): Implement using __cxa_atexit. Use .hidden if availble to avoid exporting atexit. * stdlib/cxa_atexit.c (__new_exitfn): Moved to here from atexit.c. * stdlib/Versions: Export __new_exitfn for GLIBC_2.2.3. * stdlib/Makefile (routines): Add old_atexit. (static-only-routines): Add atexit. Pass -DHAVE_DOT_HIDDEN for atexit.c if .hidden is available. * stdlib/old_atexit.c: New file. * intl/Makefile: Remove bogus endif.
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/* Copyright (C) 1999, 2001 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <bits/libc-lock.h>
|
|
#include <stdlib.h>
|
|
#include "exit.h"
|
|
|
|
/* Register a function to be called by exit or when a shared library
|
|
is unloaded. This function is only called from code generated by
|
|
the C++ compiler. */
|
|
int
|
|
__cxa_atexit (void (*func) (void *), void *arg, void *d)
|
|
{
|
|
struct exit_function *new = __new_exitfn ();
|
|
|
|
if (new == NULL)
|
|
return -1;
|
|
|
|
new->flavor = ef_cxa;
|
|
new->func.cxa.fn = (void (*) (void *, int)) func;
|
|
new->func.cxa.arg = arg;
|
|
new->func.cxa.dso_handle = d;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* We change global data, so we need locking. */
|
|
__libc_lock_define_initialized (static, lock)
|
|
|
|
|
|
static struct exit_function_list initial;
|
|
struct exit_function_list *__exit_funcs = &initial;
|
|
|
|
struct exit_function *
|
|
__new_exitfn (void)
|
|
{
|
|
struct exit_function_list *l;
|
|
size_t i = 0;
|
|
|
|
__libc_lock_lock (lock);
|
|
|
|
for (l = __exit_funcs; l != NULL; l = l->next)
|
|
{
|
|
for (i = 0; i < l->idx; ++i)
|
|
if (l->fns[i].flavor == ef_free)
|
|
break;
|
|
if (i < l->idx)
|
|
break;
|
|
|
|
if (l->idx < sizeof (l->fns) / sizeof (l->fns[0]))
|
|
{
|
|
i = l->idx++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (l == NULL)
|
|
{
|
|
l = (struct exit_function_list *)
|
|
malloc (sizeof (struct exit_function_list));
|
|
if (l != NULL)
|
|
{
|
|
l->next = __exit_funcs;
|
|
__exit_funcs = l;
|
|
|
|
l->idx = 1;
|
|
i = 0;
|
|
}
|
|
}
|
|
|
|
/* Mark entry as used, but we don't know the flavor now. */
|
|
if (l != NULL)
|
|
l->fns[i].flavor = ef_us;
|
|
|
|
__libc_lock_unlock (lock);
|
|
|
|
return l == NULL ? NULL : &l->fns[i];
|
|
}
|