usr.sbin/fifolog/lib/fifolog_write.h

   1 /*-
   2  * Copyright (c) 2005-2008 Poul-Henning Kamp
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD$
  27  */
  28
  29 #define FIFOLOG_PT_BYTES_PRE            0
  30 #define FIFOLOG_PT_BYTES_POST           1
  31 #define FIFOLOG_PT_WRITES               2
  32 #define FIFOLOG_PT_FLUSH                3
  33 #define FIFOLOG_PT_SYNC                 4
  34 #define FIFOLOG_PT_RUNTIME              5
  35 #define FIFOLOG_NPOINT                  6
  36
  37 struct fifolog_writer {
  38         unsigned                        magic;
  39 #define FIFOLOG_WRITER_MAGIC            0xf1f0706
  40
  41         struct fifolog_file             *ff;
  42
  43         unsigned                        writerate;
  44         unsigned                        syncrate;
  45         unsigned                        compression;
  46
  47         int                             cleanup;
  48
  49         intmax_t                        cnt[FIFOLOG_NPOINT];
  50
  51         uint32_t                        seq;
  52         off_t                           recno;
  53         uint8_t                         flag;
  54         time_t                          last;
  55
  56         ssize_t                         obufsize;
  57         u_char                          *obuf;
  58
  59         ssize_t                         ibufsize;
  60         ssize_t                         ibufptr;
  61         u_char                          *ibuf;
  62
  63         time_t                          starttime;
  64         time_t                          lastwrite;
  65         time_t                          lastsync;
  66 };
  67
  68 struct fifolog_writer *fifolog_write_new(void);
  69 const char *fifolog_write_open(struct fifolog_writer *f, const char *fn, unsigned writerate, unsigned syncrate, unsigned compression);
  70 int fifolog_write_record(struct fifolog_writer *f, uint32_t id, time_t now, const void *ptr, ssize_t len);
  71 int fifolog_write_poll(struct fifolog_writer *f, time_t now);
  72 int fifolog_write_record_poll(struct fifolog_writer *f, uint32_t id, time_t now, const void *ptr, ssize_t len);
  73 void fifolog_write_close(struct fifolog_writer *f);
  74 void fifolog_write_destroy(struct fifolog_writer *f);
  75 extern const char *fifolog_write_statnames[];