Commit | Line | Data |
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a7765dd4 MD |
1 | /* |
2 | * ctf/iterator.c | |
3 | * | |
4 | * Babeltrace Library | |
5 | * | |
6 | * Copyright 2011-2012 EfficiOS Inc. and Linux Foundation | |
7 | * | |
8 | * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
9 | * Julien Desfossez <julien.desfossez@efficios.com> | |
10 | * | |
11 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
12 | * of this software and associated documentation files (the "Software"), to deal | |
13 | * in the Software without restriction, including without limitation the rights | |
14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
15 | * copies of the Software, and to permit persons to whom the Software is | |
16 | * furnished to do so, subject to the following conditions: | |
17 | * | |
18 | * The above copyright notice and this permission notice shall be included in | |
19 | * all copies or substantial portions of the Software. | |
20 | */ | |
21 | ||
22 | #include <babeltrace/babeltrace.h> | |
23 | #include <babeltrace/format.h> | |
24 | #include <babeltrace/ctf/events.h> | |
25 | #include <babeltrace/ctf-ir/metadata.h> | |
26 | #include <babeltrace/prio_heap.h> | |
27 | #include <babeltrace/iterator-internal.h> | |
28 | #include <babeltrace/ctf/events-internal.h> | |
29 | #include <babeltrace/ctf/metadata.h> | |
30 | #include <glib.h> | |
31 | ||
32 | #include "events-private.h" | |
33 | ||
34 | struct bt_ctf_iter *bt_ctf_iter_create(struct bt_context *ctx, | |
04ae3991 MD |
35 | const struct bt_iter_pos *begin_pos, |
36 | const struct bt_iter_pos *end_pos) | |
a7765dd4 MD |
37 | { |
38 | struct bt_ctf_iter *iter; | |
39 | int ret; | |
40 | ||
7f89ddce MD |
41 | if (!ctx) |
42 | return NULL; | |
43 | ||
a7765dd4 MD |
44 | iter = g_new0(struct bt_ctf_iter, 1); |
45 | ret = bt_iter_init(&iter->parent, ctx, begin_pos, end_pos); | |
46 | if (ret) { | |
47 | g_free(iter); | |
48 | return NULL; | |
49 | } | |
50 | iter->callbacks = g_array_new(0, 1, sizeof(struct bt_stream_callbacks)); | |
51 | iter->recalculate_dep_graph = 0; | |
52 | iter->main_callbacks.callback = NULL; | |
53 | iter->dep_gc = g_ptr_array_new(); | |
54 | return iter; | |
55 | } | |
56 | ||
57 | void bt_ctf_iter_destroy(struct bt_ctf_iter *iter) | |
58 | { | |
59 | struct bt_stream_callbacks *bt_stream_cb; | |
60 | struct bt_callback_chain *bt_chain; | |
61 | int i, j; | |
62 | ||
7f89ddce MD |
63 | assert(iter); |
64 | ||
a7765dd4 MD |
65 | /* free all events callbacks */ |
66 | if (iter->main_callbacks.callback) | |
67 | g_array_free(iter->main_callbacks.callback, TRUE); | |
68 | ||
69 | /* free per-event callbacks */ | |
70 | for (i = 0; i < iter->callbacks->len; i++) { | |
71 | bt_stream_cb = &g_array_index(iter->callbacks, | |
72 | struct bt_stream_callbacks, i); | |
73 | if (!bt_stream_cb || !bt_stream_cb->per_id_callbacks) | |
74 | continue; | |
75 | for (j = 0; j < bt_stream_cb->per_id_callbacks->len; j++) { | |
76 | bt_chain = &g_array_index(bt_stream_cb->per_id_callbacks, | |
77 | struct bt_callback_chain, j); | |
78 | if (bt_chain->callback) { | |
79 | g_array_free(bt_chain->callback, TRUE); | |
80 | } | |
81 | } | |
82 | g_array_free(bt_stream_cb->per_id_callbacks, TRUE); | |
83 | } | |
84 | ||
85 | bt_iter_fini(&iter->parent); | |
86 | g_free(iter); | |
87 | } | |
88 | ||
89 | struct bt_iter *bt_ctf_get_iter(struct bt_ctf_iter *iter) | |
90 | { | |
7f89ddce MD |
91 | if (!iter) |
92 | return NULL; | |
93 | ||
a7765dd4 MD |
94 | return &iter->parent; |
95 | } | |
96 | ||
f60efc0e JD |
97 | struct bt_ctf_event *bt_ctf_iter_read_event_flags(struct bt_ctf_iter *iter, |
98 | int *flags) | |
a7765dd4 MD |
99 | { |
100 | struct ctf_file_stream *file_stream; | |
7f89ddce | 101 | struct bt_ctf_event *ret; |
8a4722b0 | 102 | struct ctf_stream_definition *stream; |
f60efc0e | 103 | struct packet_index *packet_index; |
a7765dd4 | 104 | |
7f89ddce MD |
105 | /* |
106 | * We do not want to fail for any other reason than end of | |
107 | * trace, hence the assert. | |
108 | */ | |
109 | assert(iter); | |
110 | ||
111 | ret = &iter->current_ctf_event; | |
a7765dd4 MD |
112 | file_stream = heap_maximum(iter->parent.stream_heap); |
113 | if (!file_stream) { | |
114 | /* end of file for all streams */ | |
115 | goto stop; | |
116 | } | |
8a4722b0 | 117 | stream = &file_stream->parent; |
c50d2a7a | 118 | ret->parent = g_ptr_array_index(stream->events_by_id, |
8a4722b0 | 119 | stream->event_id); |
a7765dd4 | 120 | |
f60efc0e JD |
121 | if (flags) |
122 | *flags = 0; | |
123 | if (!file_stream->pos.packet_cycles_index) | |
124 | packet_index = NULL; | |
125 | else | |
126 | packet_index = &g_array_index(file_stream->pos.packet_cycles_index, | |
127 | struct packet_index, file_stream->pos.cur_index); | |
128 | iter->events_lost = 0; | |
129 | if (packet_index && packet_index->events_discarded > | |
130 | file_stream->pos.last_events_discarded) { | |
131 | if (flags) | |
132 | *flags |= BT_ITER_FLAG_LOST_EVENTS; | |
133 | iter->events_lost += packet_index->events_discarded - | |
134 | file_stream->pos.last_events_discarded; | |
135 | file_stream->pos.last_events_discarded = | |
136 | packet_index->events_discarded; | |
137 | } | |
138 | ||
c50d2a7a | 139 | if (ret->parent->stream->stream_id > iter->callbacks->len) |
a7765dd4 MD |
140 | goto end; |
141 | ||
c50d2a7a | 142 | process_callbacks(iter, ret->parent->stream); |
a7765dd4 MD |
143 | |
144 | end: | |
145 | return ret; | |
146 | stop: | |
147 | return NULL; | |
148 | } | |
f60efc0e JD |
149 | |
150 | struct bt_ctf_event *bt_ctf_iter_read_event(struct bt_ctf_iter *iter) | |
151 | { | |
152 | return bt_ctf_iter_read_event_flags(iter, NULL); | |
153 | } | |
154 | ||
155 | uint64_t bt_ctf_get_lost_events_count(struct bt_ctf_iter *iter) | |
156 | { | |
157 | if (!iter) | |
158 | return -1ULL; | |
159 | ||
160 | return iter->events_lost; | |
161 | } |