converter/babeltrace-lib.c

   1 /*
   2  * babeltrace-lib.c
   3  *
   4  * Babeltrace Trace Converter Library
   5  *
   6  * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  */
  18
  19 #include <stdlib.h>
  20 #include <errno.h>
  21 #include <stdio.h>
  22 #include <inttypes.h>
  23 #include <babeltrace/babeltrace.h>
  24 #include <babeltrace/format.h>
  25 #include <babeltrace/ctf/types.h>
  26 #include <babeltrace/ctf/metadata.h>
  27 #include <babeltrace/ctf-text/types.h>
  28
  29 static
  30 int convert_stream(struct ctf_text_stream_pos *sout,
  31                    struct ctf_file_stream *sin)
  32 {
  33         int ret;
  34
  35         /* For each event, print header, context, payload */
  36         /* TODO: order events by timestamps across streams */
  37         for (;;) {
  38                 ret = sin->pos.parent.event_cb(&sin->pos.parent, sin->stream);
  39                 if (ret == EOF)
  40                         break;
  41                 else if (ret) {
  42                         fprintf(stdout, "[error] Reading event failed.\n");
  43                         goto error;
  44                 }
  45                 ret = sout->parent.event_cb(&sout->parent, sin->stream);
  46                 if (ret) {
  47                         fprintf(stdout, "[error] Writing event failed.\n");
  48                         goto error;
  49                 }
  50         }
  51
  52         return 0;
  53
  54 error:
  55         return ret;
  56 }
  57
  58 int convert_trace(struct trace_descriptor *td_write,
  59                   struct trace_descriptor *td_read)
  60 {
  61         struct ctf_trace *tin = container_of(td_read, struct ctf_trace, parent);
  62         struct ctf_text_stream_pos *sout =
  63                 container_of(td_write, struct ctf_text_stream_pos, trace_descriptor);
  64         int stream_id, filenr;
  65         int ret;
  66
  67         /* For each stream (TODO: order events by timestamp) */
  68         for (stream_id = 0; stream_id < tin->streams->len; stream_id++) {
  69                 struct ctf_stream_class *stream = g_ptr_array_index(tin->streams, stream_id);
  70
  71                 if (!stream)
  72                         continue;
  73                 for (filenr = 0; filenr < stream->files->len; filenr++) {
  74                         struct ctf_file_stream *file_stream = g_ptr_array_index(stream->files, filenr);
  75                         ret = convert_stream(sout, file_stream);
  76                         if (ret) {
  77                                 fprintf(stdout, "[error] Printing stream %d failed.\n", stream_id);
  78                                 goto error;
  79                         }
  80                 }
  81         }
  82
  83         return 0;
  84
  85 error:
  86         return ret;
  87 }