| 1 | /* |
| 2 | * babeltrace-lib.c |
| 3 | * |
| 4 | * Babeltrace Trace Converter Library |
| 5 | * |
| 6 | * Copyright 2010 - 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 <stdlib.h> |
| 20 | #include <errno.h> |
| 21 | #include <stdio.h> |
| 22 | #include <inttypes.h> |
| 23 | #include <babeltrace/babeltrace.h> |
| 24 | #include <babeltrace/format.h> |
| 25 | #include <babeltrace/ctf/types.h> |
| 26 | #include <babeltrace/ctf/metadata.h> |
| 27 | #include <babeltrace/ctf-text/types.h> |
| 28 | |
| 29 | static |
| 30 | int convert_event(struct ctf_text_stream_pos *sout, |
| 31 | struct ctf_file_stream *sin) |
| 32 | { |
| 33 | struct ctf_stream *stream_class = sin->stream; |
| 34 | struct ctf_event *event_class; |
| 35 | uint64_t id = 0; |
| 36 | int len_index; |
| 37 | int ret; |
| 38 | |
| 39 | if (sin->pos.offset == EOF) |
| 40 | return EOF; |
| 41 | |
| 42 | /* Hide event payload struct brackets */ |
| 43 | sout->depth = -1; |
| 44 | |
| 45 | /* Read and print event header */ |
| 46 | if (stream_class->event_header) { |
| 47 | ret = generic_rw(&sin->pos.parent, &stream_class->event_header->p); |
| 48 | if (ret) |
| 49 | goto error; |
| 50 | /* lookup event id */ |
| 51 | len_index = struct_declaration_lookup_field_index(stream_class->event_header_decl, |
| 52 | g_quark_from_static_string("id")); |
| 53 | if (len_index >= 0) { |
| 54 | struct definition_integer *defint; |
| 55 | struct field *field; |
| 56 | |
| 57 | field = struct_definition_get_field_from_index(stream_class->event_header, len_index); |
| 58 | assert(field->definition->declaration->id == CTF_TYPE_INTEGER); |
| 59 | defint = container_of(field->definition, struct definition_integer, p); |
| 60 | assert(defint->declaration->signedness == FALSE); |
| 61 | id = defint->value._unsigned; /* set id */ |
| 62 | } |
| 63 | |
| 64 | ret = generic_rw(&sout->parent, &stream_class->event_header->p); |
| 65 | if (ret) |
| 66 | goto error; |
| 67 | } |
| 68 | |
| 69 | /* Read and print stream-declared event context */ |
| 70 | if (stream_class->event_context) { |
| 71 | ret = generic_rw(&sin->pos.parent, &stream_class->event_context->p); |
| 72 | if (ret) |
| 73 | goto error; |
| 74 | ret = generic_rw(&sout->parent, &stream_class->event_context->p); |
| 75 | if (ret) |
| 76 | goto error; |
| 77 | } |
| 78 | |
| 79 | if (id >= stream_class->events_by_id->len) { |
| 80 | fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id); |
| 81 | return -EINVAL; |
| 82 | } |
| 83 | event_class = g_ptr_array_index(stream_class->events_by_id, id); |
| 84 | if (!event_class) { |
| 85 | fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id); |
| 86 | return -EINVAL; |
| 87 | } |
| 88 | |
| 89 | /* Read and print event-declared event context */ |
| 90 | if (event_class->context) { |
| 91 | ret = generic_rw(&sin->pos.parent, &event_class->context->p); |
| 92 | if (ret) |
| 93 | goto error; |
| 94 | ret = generic_rw(&sout->parent, &event_class->context->p); |
| 95 | if (ret) |
| 96 | goto error; |
| 97 | } |
| 98 | |
| 99 | /* Read and print event payload */ |
| 100 | if (event_class->fields) { |
| 101 | ret = generic_rw(&sin->pos.parent, &event_class->fields->p); |
| 102 | if (ret) |
| 103 | goto error; |
| 104 | ret = generic_rw(&sout->parent, &event_class->fields->p); |
| 105 | if (ret) |
| 106 | goto error; |
| 107 | } |
| 108 | |
| 109 | return 0; |
| 110 | |
| 111 | error: |
| 112 | fprintf(stdout, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n"); |
| 113 | return ret; |
| 114 | } |
| 115 | |
| 116 | static |
| 117 | int convert_stream(struct ctf_text_stream_pos *sout, |
| 118 | struct ctf_file_stream *sin) |
| 119 | { |
| 120 | int ret; |
| 121 | |
| 122 | /* For each event, print header, context, payload */ |
| 123 | /* TODO: order events by timestamps across streams */ |
| 124 | for (;;) { |
| 125 | ret = convert_event(sout, sin); |
| 126 | if (ret == EOF) |
| 127 | break; |
| 128 | else if (ret) { |
| 129 | fprintf(stdout, "[error] Printing event failed.\n"); |
| 130 | goto error; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | return 0; |
| 135 | |
| 136 | error: |
| 137 | return ret; |
| 138 | } |
| 139 | |
| 140 | int convert_trace(struct trace_descriptor *td_write, |
| 141 | struct trace_descriptor *td_read) |
| 142 | { |
| 143 | struct ctf_trace *tin = container_of(td_read, struct ctf_trace, parent); |
| 144 | struct ctf_text_stream_pos *sout = |
| 145 | container_of(td_write, struct ctf_text_stream_pos, trace_descriptor); |
| 146 | int stream_id, filenr; |
| 147 | int ret; |
| 148 | |
| 149 | /* For each stream (TODO: order events by timestamp) */ |
| 150 | for (stream_id = 0; stream_id < tin->streams->len; stream_id++) { |
| 151 | struct ctf_stream *stream = g_ptr_array_index(tin->streams, stream_id); |
| 152 | |
| 153 | if (!stream) |
| 154 | continue; |
| 155 | for (filenr = 0; filenr < stream->files->len; filenr++) { |
| 156 | struct ctf_file_stream *file_stream = g_ptr_array_index(stream->files, filenr); |
| 157 | ret = convert_stream(sout, file_stream); |
| 158 | if (ret) { |
| 159 | fprintf(stdout, "[error] Printing stream %d failed.\n", stream_id); |
| 160 | goto error; |
| 161 | } |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | return 0; |
| 166 | |
| 167 | error: |
| 168 | return ret; |
| 169 | } |