Priority heap: fix insert
[babeltrace.git] / formats / ctf-text / ctf-text.c
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1/*
2 * BabelTrace - Common Trace Format (CTF)
3 *
4 * CTF Text Format registration.
5 *
6 * Copyright 2010, 2011 - 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 <babeltrace/format.h>
20#include <babeltrace/ctf-text/types.h>
31262354 21#include <babeltrace/ctf/metadata.h>
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22#include <babeltrace/babeltrace.h>
23#include <inttypes.h>
24#include <uuid/uuid.h>
25#include <sys/mman.h>
26#include <errno.h>
27#include <sys/types.h>
28#include <sys/stat.h>
29#include <fcntl.h>
30#include <dirent.h>
31#include <glib.h>
32#include <unistd.h>
33#include <stdlib.h>
34
35struct trace_descriptor *ctf_text_open_trace(const char *path, int flags);
36void ctf_text_close_trace(struct trace_descriptor *descriptor);
37
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38static
39rw_dispatch write_dispatch_table[] = {
40 [ CTF_TYPE_INTEGER ] = ctf_text_integer_write,
41 [ CTF_TYPE_FLOAT ] = ctf_text_float_write,
42 [ CTF_TYPE_ENUM ] = ctf_text_enum_write,
43 [ CTF_TYPE_STRING ] = ctf_text_string_write,
44 [ CTF_TYPE_STRUCT ] = ctf_text_struct_write,
45 [ CTF_TYPE_VARIANT ] = ctf_text_variant_write,
46 [ CTF_TYPE_ARRAY ] = ctf_text_array_write,
47 [ CTF_TYPE_SEQUENCE ] = ctf_text_sequence_write,
48};
49
50static
51struct format ctf_text_format = {
52 .open_trace = ctf_text_open_trace,
53 .close_trace = ctf_text_close_trace,
54};
55
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56static
57int ctf_text_write_event(struct stream_pos *ppos,
764af3f4 58 struct ctf_stream *stream)
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59{
60 struct ctf_text_stream_pos *pos =
61 container_of(ppos, struct ctf_text_stream_pos, parent);
764af3f4 62 struct ctf_stream_class *stream_class = stream->stream_class;
fd3382e8 63 int field_nr_saved;
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64 struct ctf_event *event_class;
65 uint64_t id = 0;
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66 int ret;
67
68 /* print event header */
69 if (stream_class->event_header) {
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70 struct definition_integer *integer_definition;
71 struct definition *variant;
72
31262354 73 /* lookup event id */
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74 integer_definition = lookup_integer(&stream_class->event_header->p, "id", FALSE);
75 if (integer_definition) {
76 id = integer_definition->value._unsigned;
77 } else {
78 struct definition_enum *enum_definition;
79
80 enum_definition = lookup_enum(&stream_class->event_header->p, "id", FALSE);
81 if (enum_definition) {
82 id = enum_definition->integer->value._unsigned;
83 }
84 }
31262354 85
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86 variant = lookup_variant(&stream_class->event_header->p, "v");
87 if (variant) {
88 integer_definition = lookup_integer(variant, "id", FALSE);
89 if (integer_definition) {
90 id = integer_definition->value._unsigned;
91 }
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92 }
93 }
94
95 if (id >= stream_class->events_by_id->len) {
96 fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id);
97 return -EINVAL;
98 }
99 event_class = g_ptr_array_index(stream_class->events_by_id, id);
100 if (!event_class) {
101 fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id);
102 return -EINVAL;
103 }
104
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105 if (stream->timestamp) {
106 if (pos->print_names)
107 fprintf(pos->fp, "timestamp = ");
108 else
109 fprintf(pos->fp, "[");
110 fprintf(pos->fp, "%12" PRIu64, stream->timestamp);
111 if (!pos->print_names)
112 fprintf(pos->fp, "]");
aa6bffae 113
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114 if (pos->print_names)
115 fprintf(pos->fp, ", ");
116 else
117 fprintf(pos->fp, " ");
118 }
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119 if (pos->print_names)
120 fprintf(pos->fp, "name = ");
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121 fprintf(pos->fp, "%s", g_quark_to_string(event_class->name));
122 if (pos->print_names)
fd3382e8 123 pos->field_nr++;
8178fe48 124 else
fd3382e8 125 fprintf(pos->fp, ":");
31262354 126
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127 /* Only show the event header in verbose mode */
128 if (babeltrace_verbose && stream_class->event_header) {
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129 if (pos->field_nr++ != 0)
130 fprintf(pos->fp, ",");
31262354 131 if (pos->print_names)
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132 fprintf(pos->fp, " stream.event.header =");
133 field_nr_saved = pos->field_nr;
134 pos->field_nr = 0;
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135 ret = generic_rw(ppos, &stream_class->event_header->p);
136 if (ret)
137 goto error;
fd3382e8 138 pos->field_nr = field_nr_saved;
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139 }
140
141 /* print stream-declared event context */
142 if (stream_class->event_context) {
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143 if (pos->field_nr++ != 0)
144 fprintf(pos->fp, ",");
31262354 145 if (pos->print_names)
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146 fprintf(pos->fp, " stream.event.context =");
147 field_nr_saved = pos->field_nr;
148 pos->field_nr = 0;
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149 ret = generic_rw(ppos, &stream_class->event_context->p);
150 if (ret)
151 goto error;
fd3382e8 152 pos->field_nr = field_nr_saved;
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153 }
154
155 /* print event-declared event context */
156 if (event_class->context) {
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157 if (pos->field_nr++ != 0)
158 fprintf(pos->fp, ",");
31262354 159 if (pos->print_names)
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160 fprintf(pos->fp, " event.context =");
161 field_nr_saved = pos->field_nr;
162 pos->field_nr = 0;
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163 ret = generic_rw(ppos, &event_class->context->p);
164 if (ret)
165 goto error;
fd3382e8 166 pos->field_nr = field_nr_saved;
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167 }
168
169 /* Read and print event payload */
170 if (event_class->fields) {
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171 if (pos->field_nr++ != 0)
172 fprintf(pos->fp, ",");
31262354 173 if (pos->print_names)
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174 fprintf(pos->fp, " event.fields =");
175 field_nr_saved = pos->field_nr;
176 pos->field_nr = 0;
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177 ret = generic_rw(ppos, &event_class->fields->p);
178 if (ret)
179 goto error;
fd3382e8 180 pos->field_nr = field_nr_saved;
31262354 181 }
fd3382e8 182 /* newline */
31262354 183 fprintf(pos->fp, "\n");
fd3382e8 184 pos->field_nr = 0;
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185
186 return 0;
187
188error:
189 fprintf(stdout, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
190 return ret;
191}
192
193
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194struct trace_descriptor *ctf_text_open_trace(const char *path, int flags)
195{
196 struct ctf_text_stream_pos *pos;
197 FILE *fp;
198
199 pos = g_new0(struct ctf_text_stream_pos, 1);
200
201 switch (flags & O_ACCMODE) {
989c73bc 202 case O_RDWR:
b61922b5 203 if (!path)
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204 fp = stdout;
205 else
206 fp = fopen(path, "w");
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207 if (!fp)
208 goto error;
209 pos->fp = fp;
210 pos->parent.rw_table = write_dispatch_table;
31262354 211 pos->parent.event_cb = ctf_text_write_event;
d63ca2cd 212 pos->print_names = opt_field_names;
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213 break;
214 case O_RDONLY:
215 default:
216 fprintf(stdout, "[error] Incorrect open flags.\n");
217 goto error;
218 }
219
220 return &pos->trace_descriptor;
221error:
222 g_free(pos);
223 return NULL;
224}
225
226void ctf_text_close_trace(struct trace_descriptor *td)
227{
228 struct ctf_text_stream_pos *pos =
229 container_of(td, struct ctf_text_stream_pos, trace_descriptor);
230 fclose(pos->fp);
231 g_free(pos);
232}
233
234void __attribute__((constructor)) ctf_text_init(void)
235{
236 int ret;
237
238 ctf_text_format.name = g_quark_from_static_string("text");
239 ret = bt_register_format(&ctf_text_format);
240 assert(!ret);
241}
242
243/* TODO: finalize */
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