| 1 | /* |
| 2 | * copy.c |
| 3 | * |
| 4 | * Babeltrace Copy Trace Structure |
| 5 | * |
| 6 | * Copyright 2017 Julien Desfossez <jdesfossez@efficios.com> |
| 7 | * |
| 8 | * Author: Julien Desfossez <jdesfossez@efficios.com> |
| 9 | * |
| 10 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 11 | * of this software and associated documentation files (the "Software"), to deal |
| 12 | * in the Software without restriction, including without limitation the rights |
| 13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 14 | * copies of the Software, and to permit persons to whom the Software is |
| 15 | * furnished to do so, subject to the following conditions: |
| 16 | * |
| 17 | * The above copyright notice and this permission notice shall be included in |
| 18 | * all copies or substantial portions of the Software. |
| 19 | * |
| 20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 23 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 26 | * SOFTWARE. |
| 27 | */ |
| 28 | |
| 29 | #define BT_LOG_TAG "PLUGIN-UTILS-TRIMMER-FLT-COPY" |
| 30 | #include "logging.h" |
| 31 | |
| 32 | #include <babeltrace/assert-internal.h> |
| 33 | #include <babeltrace/babeltrace.h> |
| 34 | |
| 35 | #include <ctfcopytrace.h> |
| 36 | #include "iterator.h" |
| 37 | |
| 38 | static |
| 39 | struct bt_packet *lookup_packet(struct trimmer_iterator *trim_it, |
| 40 | struct bt_packet *packet) |
| 41 | { |
| 42 | return (struct bt_packet *) g_hash_table_lookup( |
| 43 | trim_it->packet_map, |
| 44 | (gpointer) packet); |
| 45 | } |
| 46 | |
| 47 | static |
| 48 | struct bt_packet *insert_new_packet(struct trimmer_iterator *trim_it, |
| 49 | struct bt_packet *packet, |
| 50 | struct bt_stream *stream) |
| 51 | { |
| 52 | struct bt_packet *writer_packet = NULL; |
| 53 | int ret; |
| 54 | |
| 55 | BT_LOGD_STR("Inserting a new packet."); |
| 56 | writer_packet = bt_packet_create(stream); |
| 57 | if (!writer_packet) { |
| 58 | BT_LOGE_STR("Failed to create a new packet."); |
| 59 | goto error; |
| 60 | } |
| 61 | |
| 62 | ret = ctf_packet_copy_header(trim_it->err, packet, writer_packet); |
| 63 | if (ret) { |
| 64 | BT_LOGE_STR("Failed to copy packet header."); |
| 65 | goto error; |
| 66 | } |
| 67 | |
| 68 | g_hash_table_insert(trim_it->packet_map, (gpointer) packet, |
| 69 | writer_packet); |
| 70 | goto end; |
| 71 | |
| 72 | error: |
| 73 | BT_OBJECT_PUT_REF_AND_RESET(writer_packet); |
| 74 | end: |
| 75 | return writer_packet; |
| 76 | } |
| 77 | |
| 78 | BT_HIDDEN |
| 79 | enum bt_component_status update_packet_context_field(FILE *err, |
| 80 | struct bt_packet *writer_packet, |
| 81 | const char *name, int64_t value) |
| 82 | { |
| 83 | enum bt_component_status ret; |
| 84 | struct bt_field *packet_context = NULL, *writer_packet_context = NULL; |
| 85 | struct bt_field_class *struct_class = NULL, *field_class = NULL; |
| 86 | struct bt_field *field = NULL, *writer_field = NULL; |
| 87 | int nr_fields, i, int_ret; |
| 88 | |
| 89 | BT_LOGD("Updating packet context field: name=%s", name); |
| 90 | packet_context = bt_packet_get_context(writer_packet); |
| 91 | BT_ASSERT(packet_context); |
| 92 | |
| 93 | struct_class = bt_field_get_class(packet_context); |
| 94 | BT_ASSERT(struct_class); |
| 95 | |
| 96 | writer_packet_context = bt_packet_get_context(writer_packet); |
| 97 | BT_ASSERT(writer_packet_context); |
| 98 | |
| 99 | nr_fields = bt_field_class_structure_get_field_count(struct_class); |
| 100 | for (i = 0; i < nr_fields; i++) { |
| 101 | const char *field_name; |
| 102 | |
| 103 | field = bt_field_structure_get_field_by_index( |
| 104 | packet_context, i); |
| 105 | if (!field) { |
| 106 | BT_LOGE("Failed to get field in packet-context: field-name=\"%s\"", |
| 107 | name); |
| 108 | goto error; |
| 109 | } |
| 110 | if (bt_field_class_structure_get_field_by_index(struct_class, |
| 111 | &field_name, &field_class, i) < 0) { |
| 112 | BT_LOGE("Failed to get field: field-name=\"%s\"", |
| 113 | field_name); |
| 114 | goto error; |
| 115 | } |
| 116 | if (strcmp(field_name, name)) { |
| 117 | BT_OBJECT_PUT_REF_AND_RESET(field_class); |
| 118 | BT_OBJECT_PUT_REF_AND_RESET(field); |
| 119 | continue; |
| 120 | } |
| 121 | if (bt_field_class_id(field_class) != |
| 122 | BT_FIELD_CLASS_TYPE_INTEGER) { |
| 123 | BT_LOGE("Expecting an integer for this field: field-name=\"%s\"", |
| 124 | name); |
| 125 | goto error; |
| 126 | } |
| 127 | |
| 128 | writer_field = bt_field_structure_get_field_by_name(writer_packet_context, |
| 129 | field_name); |
| 130 | BT_ASSERT(writer_field); |
| 131 | |
| 132 | int_ret = bt_field_unsigned_integer_set_value(writer_field, value); |
| 133 | BT_ASSERT(int_ret == 0); |
| 134 | |
| 135 | BT_OBJECT_PUT_REF_AND_RESET(writer_field); |
| 136 | BT_OBJECT_PUT_REF_AND_RESET(field_class); |
| 137 | BT_OBJECT_PUT_REF_AND_RESET(field); |
| 138 | } |
| 139 | |
| 140 | ret = BT_COMPONENT_STATUS_OK; |
| 141 | goto end; |
| 142 | |
| 143 | error: |
| 144 | bt_object_put_ref(writer_field); |
| 145 | bt_object_put_ref(field_class); |
| 146 | bt_object_put_ref(field); |
| 147 | ret = BT_COMPONENT_STATUS_ERROR; |
| 148 | end: |
| 149 | bt_object_put_ref(struct_class); |
| 150 | bt_object_put_ref(packet_context); |
| 151 | return ret; |
| 152 | } |
| 153 | |
| 154 | BT_HIDDEN |
| 155 | struct bt_packet *trimmer_new_packet( |
| 156 | struct trimmer_iterator *trim_it, |
| 157 | struct bt_packet *packet) |
| 158 | { |
| 159 | struct bt_stream *stream = NULL; |
| 160 | struct bt_packet *writer_packet = NULL; |
| 161 | int int_ret; |
| 162 | |
| 163 | stream = bt_packet_get_stream(packet); |
| 164 | BT_ASSERT(stream); |
| 165 | |
| 166 | /* |
| 167 | * If a packet was already opened, close it and remove it from |
| 168 | * the HT. |
| 169 | */ |
| 170 | writer_packet = lookup_packet(trim_it, packet); |
| 171 | if (writer_packet) { |
| 172 | g_hash_table_remove(trim_it->packet_map, packet); |
| 173 | BT_OBJECT_PUT_REF_AND_RESET(writer_packet); |
| 174 | } |
| 175 | |
| 176 | writer_packet = insert_new_packet(trim_it, packet, stream); |
| 177 | if (!writer_packet) { |
| 178 | BT_LOGE_STR("Failed to insert new packet."); |
| 179 | goto error; |
| 180 | } |
| 181 | bt_object_get_ref(writer_packet); |
| 182 | |
| 183 | int_ret = ctf_packet_copy_context(trim_it->err, packet, |
| 184 | stream, writer_packet); |
| 185 | if (int_ret < 0) { |
| 186 | BT_LOGE_STR("Failed to copy packet context."); |
| 187 | goto error; |
| 188 | } |
| 189 | |
| 190 | goto end; |
| 191 | |
| 192 | error: |
| 193 | BT_OBJECT_PUT_REF_AND_RESET(writer_packet); |
| 194 | end: |
| 195 | bt_object_put_ref(stream); |
| 196 | return writer_packet; |
| 197 | } |
| 198 | |
| 199 | BT_HIDDEN |
| 200 | struct bt_packet *trimmer_close_packet( |
| 201 | struct trimmer_iterator *trim_it, |
| 202 | struct bt_packet *packet) |
| 203 | { |
| 204 | struct bt_packet *writer_packet = NULL; |
| 205 | |
| 206 | writer_packet = lookup_packet(trim_it, packet); |
| 207 | if (!writer_packet) { |
| 208 | BT_LOGE_STR("Failed to find existing packet."); |
| 209 | goto end; |
| 210 | } |
| 211 | |
| 212 | g_hash_table_remove(trim_it->packet_map, packet); |
| 213 | |
| 214 | end: |
| 215 | return writer_packet; |
| 216 | } |
| 217 | |
| 218 | BT_HIDDEN |
| 219 | struct bt_event *trimmer_output_event( |
| 220 | struct trimmer_iterator *trim_it, |
| 221 | struct bt_event *event) |
| 222 | { |
| 223 | struct bt_event_class *event_class = NULL; |
| 224 | struct bt_event *writer_event = NULL; |
| 225 | struct bt_packet *packet = NULL, *writer_packet = NULL; |
| 226 | const char *event_name; |
| 227 | int int_ret; |
| 228 | |
| 229 | event_class = bt_event_get_class(event); |
| 230 | BT_ASSERT(event_class); |
| 231 | |
| 232 | event_name = bt_event_class_get_name(event_class); |
| 233 | |
| 234 | writer_event = ctf_copy_event(trim_it->err, event, event_class, false); |
| 235 | if (!writer_event) { |
| 236 | BT_LOGE("Failed to copy event: event-class-name=\"%s\", event-name=\"%s\"", |
| 237 | bt_event_class_get_name(event_class), |
| 238 | event_name); |
| 239 | goto error; |
| 240 | } |
| 241 | |
| 242 | packet = bt_event_get_packet(event); |
| 243 | BT_ASSERT(packet); |
| 244 | |
| 245 | writer_packet = lookup_packet(trim_it, packet); |
| 246 | if (!writer_packet) { |
| 247 | BT_LOGE_STR("Failed to find existing packet."); |
| 248 | goto error; |
| 249 | } |
| 250 | bt_object_get_ref(writer_packet); |
| 251 | |
| 252 | int_ret = bt_event_set_packet(writer_event, writer_packet); |
| 253 | if (int_ret < 0) { |
| 254 | BT_LOGE("Failed to append event: event-class-name=\"%s\", event-name=\"%s\"", |
| 255 | bt_event_class_get_name(event_class), |
| 256 | event_name); |
| 257 | goto error; |
| 258 | } |
| 259 | |
| 260 | /* We keep the reference on the writer_event to create a notification. */ |
| 261 | goto end; |
| 262 | |
| 263 | error: |
| 264 | BT_OBJECT_PUT_REF_AND_RESET(writer_event); |
| 265 | end: |
| 266 | bt_object_put_ref(writer_packet); |
| 267 | bt_object_put_ref(packet); |
| 268 | bt_object_put_ref(event_class); |
| 269 | return writer_event; |
| 270 | } |