2007-07-13 02:26:36 +08:00
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/* Copyright (C) 1999, 2001, 2002, 2005, 2006 Free Software Foundation, Inc.
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1999-12-28 05:50:29 +08:00
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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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2001-07-06 12:58:11 +08:00
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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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1999-12-28 05:50:29 +08:00
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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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2001-07-06 12:58:11 +08:00
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Lesser General Public License for more details.
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1999-12-28 05:50:29 +08:00
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2001-07-06 12:58:11 +08:00
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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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1999-12-28 05:50:29 +08:00
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2007-07-13 02:26:36 +08:00
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#include <assert.h>
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1999-12-28 05:50:29 +08:00
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#include <stdlib.h>
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2007-07-13 02:26:36 +08:00
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#include <bits/libc-lock.h>
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1999-12-28 05:50:29 +08:00
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#include "exit.h"
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2007-07-13 02:26:36 +08:00
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#include <atomic.h>
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#include <sysdep.h>
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1999-12-28 05:50:29 +08:00
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Update.
* sysdeps/mach/hurd/chown.c: Use INTDEF for __chown.
* sysdeps/unix/sysv/aix/chown.c: Likewise.
* sysdeps/unix/grantpt.c: Use INTUSE for __chown calls.
* sysdeps/unix/sysv/linux/m68k/chown.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/chown.c: Likewise.
* sysdeps/unix/sysv/linux/i386/chown.c: Use INTDEF2 to define
__chown_internal.
* sysdeps/unix/sysv/linux/s390/s390-32//chown.c: Likewise.
* intl/dcngettext.c [_LIBC]: Use INTUSE for __dcngettext.
* intl/dngettext.c [_LIBC] (DCNGETTEXT): Use INTUSE.
* intl/ngettext.c: Likewise.
* include/sys/socket.h: Declare __connect_internal and define
__connect macro if not NOT_IN_libc.
* sysdeps/mach/hurd/connect.c: Use INTDEF for __connect.
* sysdeps/unix/sysv/aix/connect.c: Likewise.
* sysdeps/unix/sysv/linux/connect.S: Add __connect_internal alias.
* include/unistd.h: Declare __close_internal and define __close macro
if not NOT_IN_libc.
* libio/libioP.h (JUMO0, JUMP1, JUMP2, JUMP3, WJUMP0, WJUMP1, WJUMP2,
WJUMP3): Add extra parenthesis to avoid expanding element names with
macors like __close.
* sysdeps/unix/syscalls.list: Add __close_internal alias.
* include/unistd.h: Declare __dup2_internal and define __dup2 macro
if not NOT_IN_libc.
* sysdeps/mach/hurd/dup2.c: Use INTDEF for __dup2.
* sysdeps/posix/dup2.c: Use INTDEF for __dup2.
* sysdeps/unix/syscalls.list: Add __dup2_internal alias.
* include/unistd.h: Declare __fork_internal and define __fork macro
if not NOT_IN_libc.
* sysdeps/mach/hurd/fork.c: Use INTDEF for __fork.
* sysdeps/unix/sysv/aix/fork.c: Likewise.
* sysdeps/unix/sysv/linux/syscalls.list: Add __fork_internal alias.
* include/stdio_ext.h: Declare __fsetlocking_internal and define
__fsetlocking macro to use it if not NOT_IN_libc.
* libio/__fsetlocking.c: Use INTDEF for __fsetlocking.
* libio/__fbufsize.c: Correct copyright.
* libio/__flbf.c: Likewise.
* libio/__fpending.c: Likewise.
* libio/__fpurge.c: Likewise.
* libio/__freadable.c: Likewise.
* libio/__freading.c: Likewise.
* libio/__fsetlocking.c: Likewise.
* libio/__fwritable.c: Likewise.
* libio/__fwriting.c: Likewise.
* include/stdio.h: Declare __asprintf_internal and define __asprintf
macro to use it if not NOT_IN_libc.
* stdio-common/asprintf.c: Use INTDEF for __asprintf.
* include/mntent.h: Declare __setmntent_internal,
__getmntent_r_internal, __endmntent_internal. Define __setmntent,
__getmntent_r, and __endmntent macros to use these functions if not
NOT_IN_libc.
* misc/mntent_r.c: Use INTDEF for __setmntent, __getmntent_r, and
__endmntent.
* include/math.h: Declare __finite_internal, __finitef_internal, and
__finitel_internal. Redefine isfinite macro if in libc or libm using
these functions.
* sysdeps/generic/s_ldexp.c: Use INTUSE for __finite calls.
* sysdeps/generic/s_ldexpf.c: Use INTUSE for __finitef calls.
* sysdeps/generic/s_ldexpl.c: Use INTUSE for __finitel calls.
* sysdeps/i386/fpu/s_finite.S: Define _internal alias.
* sysdeps/i386/fpu/s_finitef.S: Likewise.
* sysdeps/i386/fpu/s_finitel.S: Likewise.
* sysdeps/ieee754/dbl-64/s_finite.c: Likewise.
* sysdeps/ieee754/flt-32/s_finitef.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_finitel.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_finitel.c: Likewise.
* include/fcntl.h: Declare __fcntl_internal. Define __fcntl macro
to use this function if not NOT_IN_libc.
* libio/iofdopen.c (_IO_fcntl): Use INTUSE.
* sysdeps/generic/fcntl.c: Use INTDEF for __fcntl.
* sysdeps/mach/hurd/fcntl.c: Likewise.
* sysdeps/unix/sysv/aix/fcntl.c: Likewise.
* sysdeps/unix/sysv/linux/i386/fcntl.c: Likewise.
* include/argz.h: Declare __argz_count_internal and
__argz_stringify_internal.
* intl/l10nflist.c [_LIBC]: Use INTUSE for __argz_count and
__argz_stringify.
* string/argz-count.c: Use INTDEF for __argz_count.
* string/argz-stringify.c: Use INTDEF for __argz_stringify.
* include/stdlib.h: Declare __cxa_atexit_internal and define
__cxa_atexit macro if not NOT_IN_libc.
* stdlib/cxa_atexit.c: Use INTDEF for __cxa_atexit.
* dlfcn/Makefile: Define NOT_IN_libc when compiling modcxaatexit.c.
* assert/assert.c: Use INTDEF for __assert_fail.
* assert/__assert.c: Use INTUSE for call to __assert_fail.
* include/assert.h: Declare __assert_fail_internal.
2002-04-10 04:36:24 +08:00
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#undef __cxa_atexit
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1999-12-28 05:50:29 +08:00
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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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struct exit_function *new = __new_exitfn ();
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if (new == NULL)
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return -1;
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2007-07-13 02:26:36 +08:00
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#ifdef PTR_MANGLE
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PTR_MANGLE (func);
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#endif
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2001-01-12 15:29:55 +08:00
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new->func.cxa.fn = (void (*) (void *, int)) func;
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1999-12-28 05:50:29 +08:00
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new->func.cxa.arg = arg;
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new->func.cxa.dso_handle = d;
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2007-07-13 02:26:36 +08:00
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atomic_write_barrier ();
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new->flavor = ef_cxa;
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1999-12-28 05:50:29 +08:00
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return 0;
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}
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Update.
* sysdeps/mach/hurd/chown.c: Use INTDEF for __chown.
* sysdeps/unix/sysv/aix/chown.c: Likewise.
* sysdeps/unix/grantpt.c: Use INTUSE for __chown calls.
* sysdeps/unix/sysv/linux/m68k/chown.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/chown.c: Likewise.
* sysdeps/unix/sysv/linux/i386/chown.c: Use INTDEF2 to define
__chown_internal.
* sysdeps/unix/sysv/linux/s390/s390-32//chown.c: Likewise.
* intl/dcngettext.c [_LIBC]: Use INTUSE for __dcngettext.
* intl/dngettext.c [_LIBC] (DCNGETTEXT): Use INTUSE.
* intl/ngettext.c: Likewise.
* include/sys/socket.h: Declare __connect_internal and define
__connect macro if not NOT_IN_libc.
* sysdeps/mach/hurd/connect.c: Use INTDEF for __connect.
* sysdeps/unix/sysv/aix/connect.c: Likewise.
* sysdeps/unix/sysv/linux/connect.S: Add __connect_internal alias.
* include/unistd.h: Declare __close_internal and define __close macro
if not NOT_IN_libc.
* libio/libioP.h (JUMO0, JUMP1, JUMP2, JUMP3, WJUMP0, WJUMP1, WJUMP2,
WJUMP3): Add extra parenthesis to avoid expanding element names with
macors like __close.
* sysdeps/unix/syscalls.list: Add __close_internal alias.
* include/unistd.h: Declare __dup2_internal and define __dup2 macro
if not NOT_IN_libc.
* sysdeps/mach/hurd/dup2.c: Use INTDEF for __dup2.
* sysdeps/posix/dup2.c: Use INTDEF for __dup2.
* sysdeps/unix/syscalls.list: Add __dup2_internal alias.
* include/unistd.h: Declare __fork_internal and define __fork macro
if not NOT_IN_libc.
* sysdeps/mach/hurd/fork.c: Use INTDEF for __fork.
* sysdeps/unix/sysv/aix/fork.c: Likewise.
* sysdeps/unix/sysv/linux/syscalls.list: Add __fork_internal alias.
* include/stdio_ext.h: Declare __fsetlocking_internal and define
__fsetlocking macro to use it if not NOT_IN_libc.
* libio/__fsetlocking.c: Use INTDEF for __fsetlocking.
* libio/__fbufsize.c: Correct copyright.
* libio/__flbf.c: Likewise.
* libio/__fpending.c: Likewise.
* libio/__fpurge.c: Likewise.
* libio/__freadable.c: Likewise.
* libio/__freading.c: Likewise.
* libio/__fsetlocking.c: Likewise.
* libio/__fwritable.c: Likewise.
* libio/__fwriting.c: Likewise.
* include/stdio.h: Declare __asprintf_internal and define __asprintf
macro to use it if not NOT_IN_libc.
* stdio-common/asprintf.c: Use INTDEF for __asprintf.
* include/mntent.h: Declare __setmntent_internal,
__getmntent_r_internal, __endmntent_internal. Define __setmntent,
__getmntent_r, and __endmntent macros to use these functions if not
NOT_IN_libc.
* misc/mntent_r.c: Use INTDEF for __setmntent, __getmntent_r, and
__endmntent.
* include/math.h: Declare __finite_internal, __finitef_internal, and
__finitel_internal. Redefine isfinite macro if in libc or libm using
these functions.
* sysdeps/generic/s_ldexp.c: Use INTUSE for __finite calls.
* sysdeps/generic/s_ldexpf.c: Use INTUSE for __finitef calls.
* sysdeps/generic/s_ldexpl.c: Use INTUSE for __finitel calls.
* sysdeps/i386/fpu/s_finite.S: Define _internal alias.
* sysdeps/i386/fpu/s_finitef.S: Likewise.
* sysdeps/i386/fpu/s_finitel.S: Likewise.
* sysdeps/ieee754/dbl-64/s_finite.c: Likewise.
* sysdeps/ieee754/flt-32/s_finitef.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_finitel.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_finitel.c: Likewise.
* include/fcntl.h: Declare __fcntl_internal. Define __fcntl macro
to use this function if not NOT_IN_libc.
* libio/iofdopen.c (_IO_fcntl): Use INTUSE.
* sysdeps/generic/fcntl.c: Use INTDEF for __fcntl.
* sysdeps/mach/hurd/fcntl.c: Likewise.
* sysdeps/unix/sysv/aix/fcntl.c: Likewise.
* sysdeps/unix/sysv/linux/i386/fcntl.c: Likewise.
* include/argz.h: Declare __argz_count_internal and
__argz_stringify_internal.
* intl/l10nflist.c [_LIBC]: Use INTUSE for __argz_count and
__argz_stringify.
* string/argz-count.c: Use INTDEF for __argz_count.
* string/argz-stringify.c: Use INTDEF for __argz_stringify.
* include/stdlib.h: Declare __cxa_atexit_internal and define
__cxa_atexit macro if not NOT_IN_libc.
* stdlib/cxa_atexit.c: Use INTDEF for __cxa_atexit.
* dlfcn/Makefile: Define NOT_IN_libc when compiling modcxaatexit.c.
* assert/assert.c: Use INTDEF for __assert_fail.
* assert/__assert.c: Use INTUSE for call to __assert_fail.
* include/assert.h: Declare __assert_fail_internal.
2002-04-10 04:36:24 +08:00
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INTDEF(__cxa_atexit)
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2001-02-27 01:53:15 +08:00
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/* We change global data, so we need locking. */
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__libc_lock_define_initialized (static, lock)
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static struct exit_function_list initial;
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struct exit_function_list *__exit_funcs = &initial;
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2007-07-13 02:26:36 +08:00
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uint64_t __new_exitfn_called;
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2001-02-27 01:53:15 +08:00
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struct exit_function *
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__new_exitfn (void)
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{
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2007-07-13 02:26:36 +08:00
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struct exit_function_list *p = NULL;
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2001-02-27 01:53:15 +08:00
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struct exit_function_list *l;
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2007-07-13 02:26:36 +08:00
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struct exit_function *r = NULL;
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2001-02-27 01:53:15 +08:00
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size_t i = 0;
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__libc_lock_lock (lock);
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2007-07-13 02:26:36 +08:00
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for (l = __exit_funcs; l != NULL; p = l, l = l->next)
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2001-02-27 01:53:15 +08:00
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{
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2007-07-13 02:26:36 +08:00
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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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2001-02-27 01:53:15 +08:00
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break;
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2007-07-13 02:26:36 +08:00
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if (i > 0)
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2001-02-27 01:53:15 +08:00
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break;
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2007-07-13 02:26:36 +08:00
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/* This block is completely unused. */
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l->idx = 0;
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2001-02-27 01:53:15 +08:00
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}
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2007-07-13 02:26:36 +08:00
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if (l == NULL || i == sizeof (l->fns) / sizeof (l->fns[0]))
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2001-02-27 01:53:15 +08:00
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{
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2007-07-13 02:26:36 +08:00
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/* The last entry in a block is used. Use the first entry in
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the previous block if it exists. Otherwise create a new one. */
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if (p == NULL)
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2001-02-27 01:53:15 +08:00
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{
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2007-07-13 02:26:36 +08:00
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assert (l != NULL);
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p = (struct exit_function_list *)
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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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}
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}
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2001-02-27 01:53:15 +08:00
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2007-07-13 02:26:36 +08:00
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if (p != NULL)
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{
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r = &p->fns[0];
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p->idx = 1;
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2001-02-27 01:53:15 +08:00
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}
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}
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2007-07-13 02:26:36 +08:00
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else
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{
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/* There is more room in the block. */
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r = &l->fns[i];
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l->idx = i + 1;
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}
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2001-02-27 01:53:15 +08:00
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/* Mark entry as used, but we don't know the flavor now. */
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2007-07-13 02:26:36 +08:00
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if (r != NULL)
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{
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r->flavor = ef_us;
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++__new_exitfn_called;
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}
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2001-02-27 01:53:15 +08:00
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__libc_lock_unlock (lock);
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2007-07-13 02:26:36 +08:00
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return r;
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2001-02-27 01:53:15 +08:00
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}
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