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Diffstat (limited to 'lib/libpthread/include/fd.h')
| -rw-r--r-- | lib/libpthread/include/fd.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/lib/libpthread/include/fd.h b/lib/libpthread/include/fd.h new file mode 100644 index 000000000000..408f101e9aeb --- /dev/null +++ b/lib/libpthread/include/fd.h @@ -0,0 +1,104 @@ +/* ==== fd.h ============================================================ + * Copyright (c) 1993 by Chris Provenzano, proven@mit.edu + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Chris Provenzano. + * 4. The name of Chris Provenzano may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * Description : Basic fd header. + * + * 1.00 93/08/14 proven + * -Started coding this file. + * + * 1.01 93/11/13 proven + * -The functions readv() and writev() added + */ + +/* + * New pthread types. + */ +enum fd_type { + FD_NT, /* Not tested */ + FD_NIU, /* Known to be not in use */ + FD_HALF_DUPLEX, /* Files, and seeking devices */ + FD_FULL_DUPLEX /* pipes, sockets, drivers, ... */ +}; + + +#define FD_READ 0x1 +#define FD_WRITE 0x2 +#define FD_RDWR (FD_READ | FD_WRITE) + +struct fd_ops { + int (*write)(); + int (*read)(); + int (*close)(); + int (*fcntl)(); + int (*writev)(); + int (*readv)(); + int (*seek)(); +}; + +union fd_data { + void *ptr; + int i; +}; + +struct fd_table_entry { + struct pthread_queue r_queue; + struct pthread_queue w_queue; + struct pthread *r_owner; + struct pthread *w_owner; + semaphore lock; + struct fd_table_entry *next; + struct fd_ops *ops; + enum fd_type type; + int lockcount; /* Count for FILE locks */ + int count; + + /* data that needs to be passed to the type dependent fd */ + int flags; + union fd_data fd; +}; + +/* + * Important data structure + */ +extern struct fd_table_entry *fd_table[]; +extern int dtablesize; + +/* + * New functions + */ + +__BEGIN_DECLS + +#if defined(PTHREAD_KERNEL) + +#endif + +__END_DECLS |