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* libio/genops.c (_IO_list_all_stamp): New variable. (_IO_un_link): Bump _IO_list_all_stamp after removing from list. (_IO_link): Likewise for insertion. (flush_cleanup): New function. (_IO_flush_all): Get list_all_lock and all individual locks for the streams. Detect and handle changes to the _IO_list_all list. (_IO_flush_all_linebuffered): Likewise. * sysdeps/generic/bits/stdio-lock.h: Define _IO_cleanup_region_start_noarg. * sysdeps/mach/hurd/bits/stdio-lock.c: Likewise.
66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/* Thread package specific definitions of stream lock type. Hurd version.
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Copyright (C) 2000, 2001 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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/* We need recursive (counting) mutexes. Since cthreads doesn't really
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have them, we implement them just for libio. The implementation is
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partially here and partially in Hurd's version of cthreads (i.e. the
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libthreads library, libthreads/lockfile.c). */
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#if (_LIBC - 0) || (_CTHREADS_ - 0)
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#include <cthreads.h>
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struct _IO_cthreads_lock
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{
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struct mutex mutex;
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cthread_t owner;
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unsigned int count;
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};
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#else
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struct _IO_cthreads_lock;
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#endif
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typedef struct _IO_cthreads_lock _IO_lock_t;
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#define _IO_lock_initializer { MUTEX_INITIALIZER, 0, 0 }
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#define _IO_lock_init(_name) ({ (_name) = (_IO_lock_t) _IO_lock_initializer; })
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#define _IO_lock_fini(_name) ((void) 0) /* nothing to do */
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/* These are in fact only used for `list_all_lock' (libio/genops.c),
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which does not need a recursive lock. The per-FILE locks are only
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accessed through _IO_flockfile et al, which Hurd's libthreads overrides. */
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#define _IO_lock_lock(_name) __libc_lock_lock ((_name).mutex)
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#define _IO_lock_unlock(_name) __libc_lock_unlock ((_name).mutex)
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#ifdef _LIBC
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#include <bits/libc-lock.h>
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#define _IO_cleanup_region_start(_fct, _fp) \
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__libc_cleanup_region_start (_fct, _fp)
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#define _IO_cleanup_region_start_noarg(_fct) \
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__libc_cleanup_region_start (_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
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#endif /* bits/stdio-lock.h */
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