From 1c479f72fe717105a809d744e0dcab3608a949d5 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Mon, 27 Mar 2000 03:57:46 +0000 Subject: * libio/Makefile (headers): Add bits/stdio-lock.h here. * sysdeps/mach/hurd/bits/stdio-lock.h: New file. --- sysdeps/mach/hurd/bits/stdio-lock.h | 62 +++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 sysdeps/mach/hurd/bits/stdio-lock.h (limited to 'sysdeps/mach') diff --git a/sysdeps/mach/hurd/bits/stdio-lock.h b/sysdeps/mach/hurd/bits/stdio-lock.h new file mode 100644 index 0000000000..1f67542c42 --- /dev/null +++ b/sysdeps/mach/hurd/bits/stdio-lock.h @@ -0,0 +1,62 @@ +/* Thread package specific definitions of stream lock type. Hurd version. + Copyright (C) 2000 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. */ + +#ifndef _BITS_STDIO_LOCK_H +#define _BITS_STDIO_LOCK_H 1 + +/* We need recursive (counting) mutexes. Since cthreads doesn't really + have them, we implement them just for libio. The implementation is + partially here and partially in Hurd's version of cthreads (i.e. the + libthreads library, libthreads/lockfile.c). */ + +#if (_LIBC - 0) || (_CTHREADS_ - 0) +#include + +struct _IO_cthreads_lock +{ + struct mutex mutex; + cthread_t owner; + unsigned int count; +}; +#else +struct _IO_cthreads_lock; +#endif +typedef struct _IO_cthreads_lock _IO_lock_t; + +#define _IO_lock_initializer { MUTEX_INITIALIZER, 0, 0 } + +#define _IO_lock_init(_name) ({ (_name) = (_IO_lock_t) _IO_lock_initializer; }) +#define _IO_lock_fini(_name) ((void) 0) /* nothing to do */ + +/* These are in fact only used for `list_all_lock' (libio/genops.c), + which does not need a recursive lock. The per-FILE locks are only + accessed through _IO_flockfile et al, which Hurd's libthreads overrides. */ +#define _IO_lock_lock(_name) __libc_lock_lock ((_name).mutex) +#define _IO_lock_unlock(_name) __libc_lock_unlock ((_name).mutex) + + +#include + +#define _IO_cleanup_region_start(_fct, _fp) \ + __libc_cleanup_region_start (_fct, _fp) +#define _IO_cleanup_region_end(_doit) \ + __libc_cleanup_region_end (_doit) + + +#endif /* bits/stdio-lock.h */ -- cgit v1.2.3