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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 <babeltrace/babeltrace.h> | |
23 | #include <babeltrace/format.h> | |
24 | #include <babeltrace/ctf/types.h> | |
25 | #include <babeltrace/ctf/metadata.h> | |
26 | #include <babeltrace/ctf-text/types.h> | |
27 | ||
28 | static | |
29 | int print_event(struct format *fmt_write, struct ctf_text_stream_pos *sout, | |
30 | struct format *fmt_read, struct ctf_file_stream *sin) | |
31 | { | |
32 | struct ctf_stream *stream_class = sin->stream; | |
33 | struct ctf_event *event_class; | |
34 | uint64_t id = 0; | |
35 | int len_index; | |
36 | ||
37 | /* Read and print event header */ | |
38 | if (stream_class->event_header) { | |
39 | fmt_read->struct_read(&sin->pos.parent, stream_class->event_header); | |
40 | ||
41 | /* lookup event id */ | |
42 | len_index = struct_declaration_lookup_field_index(td->packet_header->declaration, | |
43 | g_quark_from_static_string("id")); | |
44 | if (len_index >= 0) { | |
45 | struct definition_integer *defint; | |
46 | struct field *field; | |
47 | ||
48 | field = struct_definition_get_field_from_index(stream_class->event_header, len_index); | |
49 | assert(field->definition->declaration->id == CTF_TYPE_INTEGER); | |
50 | defint = container_of(field->definition, struct definition_integer, p); | |
51 | assert(defint->declaration->signedness == FALSE); | |
52 | id = defint->value._unsigned; /* set id */ | |
53 | } | |
54 | ||
55 | fmt_write->struct_write(&sout->parent, stream_class->event_header); | |
56 | } | |
57 | ||
58 | /* Read and print stream-declared event context */ | |
59 | if (stream_class->event_context) { | |
60 | fmt_read->struct_read(&sin->pos.parent, stream_class->event_context); | |
61 | fmt_write->struct_write(&sout->parent, stream_class->event_context); | |
62 | } | |
63 | ||
64 | if (id >= stream_class->events_by_id->len) { | |
65 | fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id); | |
66 | return -EINVAL; | |
67 | } | |
68 | event_class = g_ptr_array_index(stream_class->events_by_id, id); | |
69 | if (!event_class) { | |
70 | fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id); | |
71 | return -EINVAL; | |
72 | } | |
73 | ||
74 | /* Read and print event-declared event context */ | |
75 | if (event_class->context) { | |
76 | fmt_read->struct_read(&sin->pos.parent, event_class->context); | |
77 | fmt_write->struct_write(&sout->parent, event_class->context); | |
78 | } | |
79 | ||
80 | /* Read and print event payload */ | |
81 | if (event_class->fields) { | |
82 | fmt_read->struct_read(&sin->pos.parent, event_class->fields); | |
83 | fmt_write->struct_write(&sout->parent, event_class->fields); | |
84 | } | |
85 | ||
86 | return 0; | |
87 | } | |
88 | ||
89 | static | |
90 | int print_stream(struct format *fmt_write, struct ctf_text_stream_pos *sout, | |
91 | struct format *fmt_read, struct ctf_file_stream *sin) | |
92 | { | |
93 | int ret; | |
94 | ||
95 | /* For each event, print header, context, payload */ | |
96 | /* TODO: order events by timestamps across streams */ | |
97 | for (;;) { | |
98 | ret = print_event(fmt_write, sout, fmt_read, sin); | |
99 | if (ret == -EOF) | |
100 | break; | |
101 | else if (ret) { | |
102 | fprintf(stdout, "[error] Printing event failed.\n"); | |
103 | goto error; | |
104 | } | |
105 | } | |
106 | ||
107 | return 0; | |
108 | ||
109 | error: | |
110 | return ret; | |
111 | } | |
112 | ||
113 | int print_trace(struct format *fmt_write, | |
114 | struct trace_descriptor *td_write, | |
115 | struct format *fmt_read, | |
116 | struct trace_descriptor *td_read) | |
117 | { | |
118 | struct ctf_trace *tin = container_of(td_read, struct ctf_trace, parent); | |
119 | struct ctf_text_stream_pos *sout = container_of(td_write, struct ctf_text_stream_pos, parent); | |
120 | int stream_id, filenr; | |
121 | int ret; | |
122 | ||
123 | /* For each stream (TODO: order events by timestamp) */ | |
124 | for (stream_id = 0; stream_id < tin->streams->len; stream_id++) { | |
125 | struct ctf_stream *stream = g_ptr_array_index(tin->streams, stream_id); | |
126 | ||
127 | if (!stream) | |
128 | continue; | |
129 | for (filenr = 0; filenr < stream->files->len; filenr++) { | |
130 | struct ctf_file_stream *file_stream = g_ptr_array_index(stream->files, filenr); | |
131 | ret = print_stream(fmt_write, sout, fmt_read, file_stream); | |
132 | if (ret) { | |
133 | fprintf(stdout, "[error] Printing stream %d failed.\n", stream_id); | |
134 | goto error; | |
135 | } | |
136 | } | |
137 | } | |
138 | ||
139 | return 0; | |
140 | ||
141 | error: | |
142 | return ret; | |
143 | } |