3797508155831cf84847cd4ec2d346c94ce70f88
4 * Babeltrace Trace Converter Library
6 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
8 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
25 #include <babeltrace/babeltrace-internal.h>
26 #include <babeltrace/format.h>
27 #include <babeltrace/ctf/types.h>
28 #include <babeltrace/ctf/metadata.h>
29 #include <babeltrace/ctf-text/types.h>
30 #include <babeltrace/prio_heap.h>
31 #include <babeltrace/babeltrace.h>
32 #include <babeltrace/types.h>
33 #include <babeltrace/ctf/types.h>
34 #include <babeltrace/ctf-ir/metadata.h>
36 struct stream_saved_pos
{
38 * Use file_stream pointer to check if the trace collection we
39 * restore to match the one we saved from, for each stream.
41 struct ctf_file_stream
*file_stream
;
42 size_t cur_index
; /* current index in packet index */
43 ssize_t offset
; /* offset from base, in bits. EOF for end of file. */
46 struct babeltrace_saved_pos
{
47 struct trace_collection
*tc
;
48 GArray
*stream_saved_pos
; /* Contains struct stream_saved_pos */
52 * struct babeltrace_iter: data structure representing an iterator on a trace
55 struct babeltrace_iter
{
56 struct ptr_heap
*stream_heap
;
57 struct trace_collection
*tc
;
58 struct trace_collection_pos
*end_pos
;
61 static int stream_read_event(struct ctf_file_stream
*sin
)
65 ret
= sin
->pos
.parent
.event_cb(&sin
->pos
.parent
, &sin
->parent
);
69 fprintf(stdout
, "[error] Reading event failed.\n");
76 * returns true if a < b, false otherwise.
78 int stream_compare(void *a
, void *b
)
80 struct ctf_file_stream
*s_a
= a
, *s_b
= b
;
82 if (s_a
->parent
.timestamp
< s_b
->parent
.timestamp
)
88 /* TODO: use begin_pos/end_pos */
89 struct babeltrace_iter
*babeltrace_iter_create(struct trace_collection
*tc
,
90 struct trace_collection_pos
*begin_pos
,
91 struct trace_collection_pos
*end_pos
)
95 struct babeltrace_iter
*iter
;
97 iter
= malloc(sizeof(struct babeltrace_iter
));
100 iter
->stream_heap
= g_new(struct ptr_heap
, 1);
103 ret
= heap_init(iter
->stream_heap
, 0, stream_compare
);
105 goto error_heap_init
;
107 for (i
= 0; i
< tc
->array
->len
; i
++) {
108 struct ctf_trace
*tin
;
109 struct trace_descriptor
*td_read
;
111 td_read
= g_ptr_array_index(tc
->array
, i
);
112 tin
= container_of(td_read
, struct ctf_trace
, parent
);
114 /* Populate heap with each stream */
115 for (stream_id
= 0; stream_id
< tin
->streams
->len
;
117 struct ctf_stream_class
*stream
;
120 stream
= g_ptr_array_index(tin
->streams
, stream_id
);
123 for (filenr
= 0; filenr
< stream
->streams
->len
;
125 struct ctf_file_stream
*file_stream
;
127 file_stream
= g_ptr_array_index(stream
->streams
,
130 ret
= stream_read_event(file_stream
);
138 ret
= heap_insert(iter
->stream_heap
, file_stream
);
148 heap_free(iter
->stream_heap
);
150 g_free(iter
->stream_heap
);
156 void babeltrace_iter_destroy(struct babeltrace_iter
*iter
)
158 heap_free(iter
->stream_heap
);
159 g_free(iter
->stream_heap
);
163 int babeltrace_iter_next(struct babeltrace_iter
*iter
)
165 struct ctf_file_stream
*file_stream
, *removed
;
168 file_stream
= heap_maximum(iter
->stream_heap
);
170 /* end of file for all streams */
175 ret
= stream_read_event(file_stream
);
177 removed
= heap_remove(iter
->stream_heap
);
178 assert(removed
== file_stream
);
184 /* Reinsert the file stream into the heap, and rebalance. */
185 removed
= heap_replace_max(iter
->stream_heap
, file_stream
);
186 assert(removed
== file_stream
);
192 int babeltrace_iter_read_event(struct babeltrace_iter
*iter
,
193 struct ctf_stream
**stream
,
194 struct ctf_stream_event
**event
)
196 struct ctf_file_stream
*file_stream
;
199 file_stream
= heap_maximum(iter
->stream_heap
);
201 /* end of file for all streams */
205 *stream
= &file_stream
->parent
;
206 *event
= g_ptr_array_index((*stream
)->events_by_id
, (*stream
)->event_id
);
211 int convert_trace(struct trace_descriptor
*td_write
,
212 struct trace_collection
*trace_collection_read
)
214 struct babeltrace_iter
*iter
;
215 struct ctf_stream
*stream
;
216 struct ctf_stream_event
*event
;
217 struct ctf_text_stream_pos
*sout
;
220 sout
= container_of(td_write
, struct ctf_text_stream_pos
,
223 iter
= babeltrace_iter_create(trace_collection_read
, NULL
, NULL
);
224 while (babeltrace_iter_read_event(iter
, &stream
, &event
) == 0) {
225 ret
= sout
->parent
.event_cb(&sout
->parent
, stream
);
227 fprintf(stdout
, "[error] Writing event failed.\n");
230 ret
= babeltrace_iter_next(iter
);
235 babeltrace_iter_destroy(iter
);
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