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123 lines
3.6 KiB
C
Executable File
123 lines
3.6 KiB
C
Executable File
/* ==== fd.h ============================================================
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* Copyright (c) 1993, 1994 by Chris Provenzano, proven@mit.edu
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Chris Provenzano.
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* 4. The name of Chris Provenzano may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id$
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*
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* Description : Basic fd header.
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*
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* 1.00 93/08/14 proven
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* -Started coding this file.
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*
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* 1.01 93/11/13 proven
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* -The functions readv() and writev() added
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*/
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/*
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* New pthread types.
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*/
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enum fd_type {
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FD_NT, /* Not tested */
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FD_NIU, /* Known to be not in use */
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FD_HALF_DUPLEX, /* Files, and seeking devices */
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FD_FULL_DUPLEX, /* pipes, sockets, drivers, ... */
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FD_TEST_HALF_DUPLEX, /* Redo machdep_sys_fcntl */
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FD_TEST_FULL_DUPLEX /* Redo machdep_sys_fcntl */
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};
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#define FD_READ 0x1
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#define FD_WRITE 0x2
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#define FD_RDWR (FD_READ | FD_WRITE)
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union fd_data {
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void *ptr;
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int i;
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};
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struct timespec;
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struct iovec;
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struct fd_ops {
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pthread_ssize_t (*write) __P_((union fd_data, int, const void *,
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size_t, struct timespec *));
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pthread_ssize_t (*read) __P_((union fd_data, int, void *, size_t,
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struct timespec *));
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int (*close)();
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int (*fcntl)();
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int (*writev) __P_((union fd_data, int,
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const struct iovec *,
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int, struct timespec *));
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int (*readv) __P_((union fd_data, int,
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const struct iovec *,
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int, struct timespec *));
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off_t (*seek)();
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int use_kfds;
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};
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struct fd_table_entry {
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struct pthread_queue r_queue;
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struct pthread_queue w_queue;
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struct pthread *r_owner;
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struct pthread *w_owner;
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pthread_mutex_t mutex;
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struct fd_table_entry *next;
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struct fd_ops *ops;
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enum fd_type type;
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int r_lockcount; /* Count for FILE read locks */
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int w_lockcount; /* Count for FILE write locks */
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int count;
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/* data that needs to be passed to the type dependent fd */
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int flags;
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union fd_data fd;
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};
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/*
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* Globals
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*/
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#if defined(PTHREAD_KERNEL)
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extern struct fd_table_entry **fd_table;
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extern int dtablesize;
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#endif
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/*
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* New functions
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*/
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__BEGIN_DECLS
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#if defined(PTHREAD_KERNEL)
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#endif
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__END_DECLS
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