ustd/ustd.h

   1 /* Copyright (C) 2009  Pierre-Marc Fournier
   2  *
   3  * This library is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU Lesser General Public
   5  * License as published by the Free Software Foundation; either
   6  * version 2.1 of the License, or (at your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * Lesser General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public
  14  * License along with this library; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  16  */
  17
  18 #ifndef USTD_H
  19 #define USTD_H
  20
  21 #include "ustcomm.h"
  22
  23 #define USTD_DEFAULT_TRACE_PATH "/tmp/usttrace"
  24
  25 struct buffer_info {
  26         const char *name;
  27         pid_t pid;
  28         struct ustcomm_connection conn;
  29
  30         int shmid;
  31         int bufstruct_shmid;
  32
  33         /* the buffer memory */
  34         void *mem;
  35         /* buffer size */
  36         int memlen;
  37         /* number of subbuffers in buffer */
  38         int n_subbufs;
  39         /* size of each subbuffer */
  40         int subbuf_size;
  41
  42         /* the buffer information struct */
  43         void *bufstruct_mem;
  44
  45         int file_fd; /* output file */
  46
  47         long consumed_old;
  48
  49         s64 pidunique;
  50
  51         /* the offset we must truncate to, to unput the last subbuffer */
  52         off_t previous_offset;
  53 };
  54
  55 void finish_consuming_dead_subbuffer(struct buffer_info *buf);
  56 size_t subbuffer_data_size(void *subbuf);
  57
  58 #endif /* USTD_H */