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46322b33 MD |
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> | |
847bf71a | 22 | #include <inttypes.h> |
46322b33 MD |
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 | |
847bf71a MD |
30 | int convert_event(struct ctf_text_stream_pos *sout, |
31 | struct ctf_file_stream *sin) | |
46322b33 MD |
32 | { |
33 | struct ctf_stream *stream_class = sin->stream; | |
34 | struct ctf_event *event_class; | |
35 | uint64_t id = 0; | |
36 | int len_index; | |
37 | ||
847bf71a MD |
38 | if (sin->pos.offset == -EOF) |
39 | return -EOF; | |
40 | ||
46322b33 MD |
41 | /* Read and print event header */ |
42 | if (stream_class->event_header) { | |
847bf71a | 43 | generic_rw(&sin->pos.parent, &stream_class->event_header->p); |
46322b33 MD |
44 | |
45 | /* lookup event id */ | |
847bf71a | 46 | len_index = struct_declaration_lookup_field_index(stream_class->event_header_decl, |
46322b33 MD |
47 | g_quark_from_static_string("id")); |
48 | if (len_index >= 0) { | |
49 | struct definition_integer *defint; | |
50 | struct field *field; | |
51 | ||
52 | field = struct_definition_get_field_from_index(stream_class->event_header, len_index); | |
53 | assert(field->definition->declaration->id == CTF_TYPE_INTEGER); | |
54 | defint = container_of(field->definition, struct definition_integer, p); | |
55 | assert(defint->declaration->signedness == FALSE); | |
56 | id = defint->value._unsigned; /* set id */ | |
57 | } | |
58 | ||
847bf71a | 59 | generic_rw(&sout->parent, &stream_class->event_header->p); |
46322b33 MD |
60 | } |
61 | ||
62 | /* Read and print stream-declared event context */ | |
63 | if (stream_class->event_context) { | |
847bf71a MD |
64 | generic_rw(&sin->pos.parent, &stream_class->event_context->p); |
65 | generic_rw(&sout->parent, &stream_class->event_context->p); | |
46322b33 MD |
66 | } |
67 | ||
68 | if (id >= stream_class->events_by_id->len) { | |
69 | fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id); | |
70 | return -EINVAL; | |
71 | } | |
72 | event_class = g_ptr_array_index(stream_class->events_by_id, id); | |
73 | if (!event_class) { | |
74 | fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id); | |
75 | return -EINVAL; | |
76 | } | |
77 | ||
78 | /* Read and print event-declared event context */ | |
79 | if (event_class->context) { | |
847bf71a MD |
80 | generic_rw(&sin->pos.parent, &event_class->context->p); |
81 | generic_rw(&sout->parent, &event_class->context->p); | |
46322b33 MD |
82 | } |
83 | ||
84 | /* Read and print event payload */ | |
85 | if (event_class->fields) { | |
847bf71a MD |
86 | generic_rw(&sin->pos.parent, &event_class->fields->p); |
87 | generic_rw(&sout->parent, &event_class->fields->p); | |
46322b33 MD |
88 | } |
89 | ||
90 | return 0; | |
91 | } | |
92 | ||
93 | static | |
847bf71a MD |
94 | int convert_stream(struct ctf_text_stream_pos *sout, |
95 | struct ctf_file_stream *sin) | |
46322b33 MD |
96 | { |
97 | int ret; | |
98 | ||
99 | /* For each event, print header, context, payload */ | |
100 | /* TODO: order events by timestamps across streams */ | |
101 | for (;;) { | |
847bf71a | 102 | ret = convert_event(sout, sin); |
46322b33 MD |
103 | if (ret == -EOF) |
104 | break; | |
105 | else if (ret) { | |
106 | fprintf(stdout, "[error] Printing event failed.\n"); | |
107 | goto error; | |
108 | } | |
109 | } | |
110 | ||
111 | return 0; | |
112 | ||
113 | error: | |
114 | return ret; | |
115 | } | |
116 | ||
847bf71a MD |
117 | int convert_trace(struct trace_descriptor *td_write, |
118 | struct trace_descriptor *td_read) | |
46322b33 MD |
119 | { |
120 | struct ctf_trace *tin = container_of(td_read, struct ctf_trace, parent); | |
847bf71a MD |
121 | struct ctf_text_stream_pos *sout = |
122 | container_of(td_write, struct ctf_text_stream_pos, trace_descriptor); | |
46322b33 MD |
123 | int stream_id, filenr; |
124 | int ret; | |
125 | ||
126 | /* For each stream (TODO: order events by timestamp) */ | |
127 | for (stream_id = 0; stream_id < tin->streams->len; stream_id++) { | |
128 | struct ctf_stream *stream = g_ptr_array_index(tin->streams, stream_id); | |
129 | ||
130 | if (!stream) | |
131 | continue; | |
132 | for (filenr = 0; filenr < stream->files->len; filenr++) { | |
133 | struct ctf_file_stream *file_stream = g_ptr_array_index(stream->files, filenr); | |
847bf71a | 134 | ret = convert_stream(sout, file_stream); |
46322b33 MD |
135 | if (ret) { |
136 | fprintf(stdout, "[error] Printing stream %d failed.\n", stream_id); | |
137 | goto error; | |
138 | } | |
139 | } | |
140 | } | |
141 | ||
142 | return 0; | |
143 | ||
144 | error: | |
145 | return ret; | |
146 | } |