usr/src/cmd/sort/common/streams.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1998-2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SORT_STREAMS_H
  28 #define _SORT_STREAMS_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 #include <sys/mman.h>
  37 #include <sys/param.h>
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40
  41 #include <fcntl.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <unistd.h>
  46
  47 #include "fields.h"
  48 #include "types.h"
  49 #include "streams_array.h"
  50 #include "streams_common.h"
  51 #include "streams_mmap.h"
  52 #include "streams_stdio.h"
  53 #include "streams_wide.h"
  54 #include "utility.h"
  55
  56 #define ST_MEM_FILLED   0x0     /* no memory left; proceed to internal sort */
  57 #define ST_MEM_AVAIL    0x1     /* memory left for sort; take add'l input */
  58
  59 #define ST_NOCACHE      0x0     /* write sorted array to temporary file */
  60 #define ST_CACHE        0x1     /* keep sorted array in memory */
  61 #define ST_OPEN         0x2     /* create open temporary file */
  62 #define ST_WIDE         0x4     /* write multibyte chars to temporary file */
  63
  64 extern void stream_add_file_to_chain(stream_t **, char *);
  65 extern void stream_clear(stream_t *);
  66 extern void stream_close_all_previous(stream_t *);
  67 extern uint_t stream_count_chain(stream_t *);
  68 extern int stream_insert(sort_t *, stream_t *, stream_t *);
  69 extern stream_t *stream_new(int);
  70 extern int stream_open_for_read(sort_t *, stream_t *);
  71 extern void stream_push_to_chain(stream_t **, stream_t *);
  72 extern stream_t *stream_push_to_temporary(stream_t **, stream_t *, int);
  73 extern void stream_set_size(stream_t *, size_t);
  74 extern void stream_stat_chain(stream_t *);
  75 extern void stream_swap_buffer(stream_t *, char **, size_t *);
  76 extern void stream_unlink_temporary(stream_t *streamp);
  77
  78 #ifdef  __cplusplus
  79 }
  80 #endif
  81
  82 #endif  /* _SORT_STREAMS_H */