1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "config_read.h"
18 #include "logger.h"
19
20 LIBLOG_HIDDEN struct listnode __android_log_transport_read =
21 { &__android_log_transport_read, &__android_log_transport_read };
22 LIBLOG_HIDDEN struct listnode __android_log_persist_read =
23 { &__android_log_persist_read, &__android_log_persist_read };
24
__android_log_add_transport(struct listnode * list,struct android_log_transport_read * transport)25 static void __android_log_add_transport(
26 struct listnode *list, struct android_log_transport_read *transport) {
27 size_t i;
28
29 /* Try to keep one functioning transport for each log buffer id */
30 for (i = LOG_ID_MIN; i < LOG_ID_MAX; i++) {
31 struct android_log_transport_read *transp;
32
33 if (list_empty(list)) {
34 if (!transport->available || ((*transport->available)(i) >= 0)) {
35 list_add_tail(list, &transport->node);
36 return;
37 }
38 } else {
39 read_transport_for_each(transp, list) {
40 if (!transp->available) {
41 return;
42 }
43 if (((*transp->available)(i) < 0) &&
44 (!transport->available ||
45 ((*transport->available)(i) >= 0))) {
46 list_add_tail(list, &transport->node);
47 return;
48 }
49 }
50 }
51 }
52 }
53
__android_log_config_read()54 LIBLOG_HIDDEN void __android_log_config_read() {
55 #if (FAKE_LOG_DEVICE == 0)
56 extern struct android_log_transport_read logdLoggerRead;
57 extern struct android_log_transport_read pmsgLoggerRead;
58
59 __android_log_add_transport(&__android_log_transport_read, &logdLoggerRead);
60 __android_log_add_transport(&__android_log_persist_read, &pmsgLoggerRead);
61 #endif
62 }
63