4d99c986d9
Standalone, this logger provides no end-to-end capability. Only provides a writer, no reader transport. All output goes, logcat-like, into the stderr stream. Output can be adjusted with environment variables ANDROID_PRINTF_LOG and ANDROID_LOG_TAGS. liblog_*.__android_log_bswrite_and_print___max print fails if a string member is truncated with "Binary log entry conversion failed" and -1. We expose the truncated content in the tests and in LOGGER_STDERR. The purpose of this transport selection is for command-line tools, providing a means to shunt the logs to be mixed in with the tool's error stream. Test: gTest liblog-unit-tests Bug: 27405083 Change-Id: If344b6e3e67df2dc86ce317cfad8af8e857727b7
118 lines
4.3 KiB
C
118 lines
4.3 KiB
C
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <log/log_frontend.h>
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#include "config_write.h"
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#include "logger.h"
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LIBLOG_HIDDEN struct listnode __android_log_transport_write =
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{ &__android_log_transport_write, &__android_log_transport_write };
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LIBLOG_HIDDEN struct listnode __android_log_persist_write =
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{ &__android_log_persist_write, &__android_log_persist_write};
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static void __android_log_add_transport(
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struct listnode *list, struct android_log_transport_write *transport) {
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size_t i;
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/* Try to keep one functioning transport for each log buffer id */
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for (i = LOG_ID_MIN; i < LOG_ID_MAX; i++) {
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struct android_log_transport_write *transp;
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if (list_empty(list)) {
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if (!transport->available || ((*transport->available)(i) >= 0)) {
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list_add_tail(list, &transport->node);
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return;
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}
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} else {
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write_transport_for_each(transp, list) {
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if (!transp->available) {
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return;
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}
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if (((*transp->available)(i) < 0) &&
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(!transport->available ||
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((*transport->available)(i) >= 0))) {
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list_add_tail(list, &transport->node);
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return;
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}
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}
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}
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}
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}
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LIBLOG_HIDDEN void __android_log_config_write() {
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if (__android_log_frontend & LOGGER_LOCAL) {
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extern struct android_log_transport_write localLoggerWrite;
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__android_log_add_transport(&__android_log_transport_write,
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&localLoggerWrite);
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}
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if ((__android_log_frontend == LOGGER_DEFAULT) ||
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(__android_log_frontend & LOGGER_LOGD)) {
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#if (FAKE_LOG_DEVICE == 0)
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extern struct android_log_transport_write logdLoggerWrite;
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extern struct android_log_transport_write pmsgLoggerWrite;
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__android_log_add_transport(&__android_log_transport_write,
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&logdLoggerWrite);
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__android_log_add_transport(&__android_log_persist_write,
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&pmsgLoggerWrite);
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#else
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extern struct android_log_transport_write fakeLoggerWrite;
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__android_log_add_transport(&__android_log_transport_write,
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&fakeLoggerWrite);
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#endif
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}
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if (__android_log_frontend & LOGGER_STDERR) {
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extern struct android_log_transport_write stderrLoggerWrite;
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/*
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* stderr logger should be primary if we can be the only one, or if
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* already in the primary list. Otherwise land in the persist list.
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* Remember we can be called here if we are already initialized.
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*/
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if (list_empty(&__android_log_transport_write)) {
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__android_log_add_transport(&__android_log_transport_write,
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&stderrLoggerWrite);
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} else {
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struct android_log_transport_write *transp;
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write_transport_for_each(transp, &__android_log_transport_write) {
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if (transp == &stderrLoggerWrite) {
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return;
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}
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}
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__android_log_add_transport(&__android_log_persist_write,
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&stderrLoggerWrite);
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}
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}
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}
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LIBLOG_HIDDEN void __android_log_config_write_close() {
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struct android_log_transport_write *transport;
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struct listnode *n;
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write_transport_for_each_safe(transport, n, &__android_log_transport_write) {
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transport->logMask = 0;
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list_remove(&transport->node);
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}
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write_transport_for_each_safe(transport, n, &__android_log_persist_write) {
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transport->logMask = 0;
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list_remove(&transport->node);
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}
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}
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