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642ec66d MD |
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> |
642ec66d MD |
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 | ||
35 | struct trace_descriptor *ctf_text_open_trace(const char *path, int flags); | |
36 | void ctf_text_close_trace(struct trace_descriptor *descriptor); | |
37 | ||
642ec66d MD |
38 | static |
39 | rw_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 | ||
50 | static | |
51 | struct format ctf_text_format = { | |
52 | .open_trace = ctf_text_open_trace, | |
53 | .close_trace = ctf_text_close_trace, | |
54 | }; | |
55 | ||
31262354 MD |
56 | static |
57 | int ctf_text_write_event(struct stream_pos *ppos, | |
58 | struct ctf_stream *stream_class) | |
59 | { | |
60 | struct ctf_text_stream_pos *pos = | |
61 | container_of(ppos, struct ctf_text_stream_pos, parent); | |
62 | struct ctf_event *event_class; | |
63 | uint64_t id = 0; | |
64 | int len_index; | |
65 | int ret; | |
66 | ||
67 | /* print event header */ | |
68 | if (stream_class->event_header) { | |
69 | /* lookup event id */ | |
70 | len_index = struct_declaration_lookup_field_index(stream_class->event_header_decl, | |
71 | g_quark_from_static_string("id")); | |
72 | if (len_index >= 0) { | |
73 | struct definition_integer *defint; | |
74 | struct definition *field; | |
75 | ||
76 | field = struct_definition_get_field_from_index(stream_class->event_header, len_index); | |
77 | assert(field->declaration->id == CTF_TYPE_INTEGER); | |
78 | defint = container_of(field, struct definition_integer, p); | |
79 | assert(defint->declaration->signedness == FALSE); | |
80 | id = defint->value._unsigned; /* set id */ | |
81 | } | |
82 | } | |
83 | ||
84 | if (id >= stream_class->events_by_id->len) { | |
85 | fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id); | |
86 | return -EINVAL; | |
87 | } | |
88 | event_class = g_ptr_array_index(stream_class->events_by_id, id); | |
89 | if (!event_class) { | |
90 | fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id); | |
91 | return -EINVAL; | |
92 | } | |
93 | ||
94 | if (pos->print_names) | |
95 | fprintf(pos->fp, "name = "); | |
96 | fprintf(pos->fp, "%s", g_quark_to_string(event_class->name)); | |
97 | ||
98 | if (stream_class->event_header) { | |
99 | if (pos->print_names) | |
100 | fprintf(pos->fp, ", stream.event.header ="); | |
101 | fprintf(pos->fp, " "); | |
102 | ret = generic_rw(ppos, &stream_class->event_header->p); | |
103 | if (ret) | |
104 | goto error; | |
105 | } | |
106 | ||
107 | /* print stream-declared event context */ | |
108 | if (stream_class->event_context) { | |
109 | if (pos->print_names) | |
110 | fprintf(pos->fp, ", stream.event.context ="); | |
111 | fprintf(pos->fp, " "); | |
112 | ret = generic_rw(ppos, &stream_class->event_context->p); | |
113 | if (ret) | |
114 | goto error; | |
115 | } | |
116 | ||
117 | /* print event-declared event context */ | |
118 | if (event_class->context) { | |
119 | if (pos->print_names) | |
120 | fprintf(pos->fp, ", event.context ="); | |
121 | fprintf(pos->fp, " "); | |
122 | ret = generic_rw(ppos, &event_class->context->p); | |
123 | if (ret) | |
124 | goto error; | |
125 | } | |
126 | ||
127 | /* Read and print event payload */ | |
128 | if (event_class->fields) { | |
129 | if (pos->print_names) | |
130 | fprintf(pos->fp, ", event.fields ="); | |
131 | fprintf(pos->fp, " "); | |
132 | ret = generic_rw(ppos, &event_class->fields->p); | |
133 | if (ret) | |
134 | goto error; | |
135 | } | |
136 | fprintf(pos->fp, "\n"); | |
137 | ||
138 | return 0; | |
139 | ||
140 | error: | |
141 | fprintf(stdout, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n"); | |
142 | return ret; | |
143 | } | |
144 | ||
145 | ||
642ec66d MD |
146 | struct trace_descriptor *ctf_text_open_trace(const char *path, int flags) |
147 | { | |
148 | struct ctf_text_stream_pos *pos; | |
149 | FILE *fp; | |
150 | ||
151 | pos = g_new0(struct ctf_text_stream_pos, 1); | |
152 | ||
153 | switch (flags & O_ACCMODE) { | |
989c73bc | 154 | case O_RDWR: |
b61922b5 | 155 | if (!path) |
6cf7957b MD |
156 | fp = stdout; |
157 | else | |
158 | fp = fopen(path, "w"); | |
642ec66d MD |
159 | if (!fp) |
160 | goto error; | |
161 | pos->fp = fp; | |
162 | pos->parent.rw_table = write_dispatch_table; | |
31262354 MD |
163 | pos->parent.event_cb = ctf_text_write_event; |
164 | pos->print_names = 1; | |
642ec66d MD |
165 | break; |
166 | case O_RDONLY: | |
167 | default: | |
168 | fprintf(stdout, "[error] Incorrect open flags.\n"); | |
169 | goto error; | |
170 | } | |
171 | ||
172 | return &pos->trace_descriptor; | |
173 | error: | |
174 | g_free(pos); | |
175 | return NULL; | |
176 | } | |
177 | ||
178 | void ctf_text_close_trace(struct trace_descriptor *td) | |
179 | { | |
180 | struct ctf_text_stream_pos *pos = | |
181 | container_of(td, struct ctf_text_stream_pos, trace_descriptor); | |
182 | fclose(pos->fp); | |
183 | g_free(pos); | |
184 | } | |
185 | ||
186 | void __attribute__((constructor)) ctf_text_init(void) | |
187 | { | |
188 | int ret; | |
189 | ||
190 | ctf_text_format.name = g_quark_from_static_string("text"); | |
191 | ret = bt_register_format(&ctf_text_format); | |
192 | assert(!ret); | |
193 | } | |
194 | ||
195 | /* TODO: finalize */ |