Enum: fix single-value hash table lookup
[babeltrace.git] / formats / ctf-text / ctf-text.c
CommitLineData
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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;
66 int len_index;
67 int ret;
68
69 /* print event header */
70 if (stream_class->event_header) {
71 /* lookup event id */
72 len_index = struct_declaration_lookup_field_index(stream_class->event_header_decl,
73 g_quark_from_static_string("id"));
74 if (len_index >= 0) {
75 struct definition_integer *defint;
76 struct definition *field;
77
78 field = struct_definition_get_field_from_index(stream_class->event_header, len_index);
79 assert(field->declaration->id == CTF_TYPE_INTEGER);
80 defint = container_of(field, struct definition_integer, p);
81 assert(defint->declaration->signedness == FALSE);
82 id = defint->value._unsigned; /* set id */
83 }
84 }
85
86 if (id >= stream_class->events_by_id->len) {
87 fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id);
88 return -EINVAL;
89 }
90 event_class = g_ptr_array_index(stream_class->events_by_id, id);
91 if (!event_class) {
92 fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id);
93 return -EINVAL;
94 }
95
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96 if (stream->timestamp) {
97 if (pos->print_names)
98 fprintf(pos->fp, "timestamp = ");
99 else
100 fprintf(pos->fp, "[");
101 fprintf(pos->fp, "%12" PRIu64, stream->timestamp);
102 if (!pos->print_names)
103 fprintf(pos->fp, "]");
aa6bffae 104
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105 if (pos->print_names)
106 fprintf(pos->fp, ", ");
107 else
108 fprintf(pos->fp, " ");
109 }
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110 if (pos->print_names)
111 fprintf(pos->fp, "name = ");
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112 fprintf(pos->fp, "%s", g_quark_to_string(event_class->name));
113 if (pos->print_names)
fd3382e8 114 pos->field_nr++;
8178fe48 115 else
fd3382e8 116 fprintf(pos->fp, ":");
31262354 117
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118 /* Only show the event header in verbose mode */
119 if (babeltrace_verbose && stream_class->event_header) {
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120 if (pos->field_nr++ != 0)
121 fprintf(pos->fp, ",");
31262354 122 if (pos->print_names)
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123 fprintf(pos->fp, " stream.event.header =");
124 field_nr_saved = pos->field_nr;
125 pos->field_nr = 0;
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126 ret = generic_rw(ppos, &stream_class->event_header->p);
127 if (ret)
128 goto error;
fd3382e8 129 pos->field_nr = field_nr_saved;
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130 }
131
132 /* print stream-declared event context */
133 if (stream_class->event_context) {
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134 if (pos->field_nr++ != 0)
135 fprintf(pos->fp, ",");
31262354 136 if (pos->print_names)
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137 fprintf(pos->fp, " stream.event.context =");
138 field_nr_saved = pos->field_nr;
139 pos->field_nr = 0;
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140 ret = generic_rw(ppos, &stream_class->event_context->p);
141 if (ret)
142 goto error;
fd3382e8 143 pos->field_nr = field_nr_saved;
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144 }
145
146 /* print event-declared event context */
147 if (event_class->context) {
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148 if (pos->field_nr++ != 0)
149 fprintf(pos->fp, ",");
31262354 150 if (pos->print_names)
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151 fprintf(pos->fp, " event.context =");
152 field_nr_saved = pos->field_nr;
153 pos->field_nr = 0;
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154 ret = generic_rw(ppos, &event_class->context->p);
155 if (ret)
156 goto error;
fd3382e8 157 pos->field_nr = field_nr_saved;
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158 }
159
160 /* Read and print event payload */
161 if (event_class->fields) {
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162 if (pos->field_nr++ != 0)
163 fprintf(pos->fp, ",");
31262354 164 if (pos->print_names)
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165 fprintf(pos->fp, " event.fields =");
166 field_nr_saved = pos->field_nr;
167 pos->field_nr = 0;
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168 ret = generic_rw(ppos, &event_class->fields->p);
169 if (ret)
170 goto error;
fd3382e8 171 pos->field_nr = field_nr_saved;
31262354 172 }
fd3382e8 173 /* newline */
31262354 174 fprintf(pos->fp, "\n");
fd3382e8 175 pos->field_nr = 0;
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176
177 return 0;
178
179error:
180 fprintf(stdout, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
181 return ret;
182}
183
184
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185struct trace_descriptor *ctf_text_open_trace(const char *path, int flags)
186{
187 struct ctf_text_stream_pos *pos;
188 FILE *fp;
189
190 pos = g_new0(struct ctf_text_stream_pos, 1);
191
192 switch (flags & O_ACCMODE) {
989c73bc 193 case O_RDWR:
b61922b5 194 if (!path)
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195 fp = stdout;
196 else
197 fp = fopen(path, "w");
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198 if (!fp)
199 goto error;
200 pos->fp = fp;
201 pos->parent.rw_table = write_dispatch_table;
31262354 202 pos->parent.event_cb = ctf_text_write_event;
d63ca2cd 203 pos->print_names = opt_field_names;
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204 break;
205 case O_RDONLY:
206 default:
207 fprintf(stdout, "[error] Incorrect open flags.\n");
208 goto error;
209 }
210
211 return &pos->trace_descriptor;
212error:
213 g_free(pos);
214 return NULL;
215}
216
217void ctf_text_close_trace(struct trace_descriptor *td)
218{
219 struct ctf_text_stream_pos *pos =
220 container_of(td, struct ctf_text_stream_pos, trace_descriptor);
221 fclose(pos->fp);
222 g_free(pos);
223}
224
225void __attribute__((constructor)) ctf_text_init(void)
226{
227 int ret;
228
229 ctf_text_format.name = g_quark_from_static_string("text");
230 ret = bt_register_format(&ctf_text_format);
231 assert(!ret);
232}
233
234/* TODO: finalize */
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