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2002-12-07 Ulrich Drepper <drepper@redhat.com> * sysdeps/generic/bits/stdio-lock.h (_IO_lock_trylock): New define.
50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
/* Thread package specific definitions of stream lock type. Generic version.
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Copyright (C) 2000, 2001, 2002 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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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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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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#ifndef _BITS_STDIO_LOCK_H
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#define _BITS_STDIO_LOCK_H 1
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#include <bits/libc-lock.h>
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__libc_lock_define_recursive (typedef, _IO_lock_t)
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/* We need recursive (counting) mutexes. */
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#ifdef _LIBC_LOCK_RECURSIVE_INITIALIZER
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# define _IO_lock_initializer _LIBC_LOCK_RECURSIVE_INITIALIZER
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#elif _IO_MTSAFE_IO
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#error libio needs recursive mutexes for _IO_MTSAFE_IO
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#endif
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#define _IO_lock_init(_name) __libc_lock_init_recursive (_name)
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#define _IO_lock_fini(_name) __libc_lock_fini_recursive (_name)
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#define _IO_lock_lock(_name) __libc_lock_lock_recursive (_name)
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#define _IO_lock_trylock(_name) __libc_lock_trylock_recursive (_name)
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#define _IO_lock_unlock(_name) __libc_lock_unlock_recursive (_name)
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#define _IO_cleanup_region_start(_fct, _fp) \
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__libc_cleanup_region_start (((_fp)->_flags & _IO_USER_LOCK) == 0, _fct, _fp)
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#define _IO_cleanup_region_start_noarg(_fct) \
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__libc_cleanup_region_start (1, _fct, NULL)
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#define _IO_cleanup_region_end(_doit) \
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__libc_cleanup_region_end (_doit)
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#endif /* bits/stdio-lock.h */
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