136 lines
3.5 KiB
C++
136 lines
3.5 KiB
C++
/*
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* Copyright (C) 2015 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 <utils/Log.h>
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#include "ostream_.h"
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#include <utils/compiler.h>
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#ifdef __ANDROID__
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# include <android/log.h>
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# ifndef UTILS_LOG_TAG
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# define UTILS_LOG_TAG "Filament"
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# endif
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#endif
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#if defined(__EMSCRIPTEN__)
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#include <emscripten/console.h>
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#endif
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#include <mutex>
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namespace utils {
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namespace io {
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class LogStream : public ostream {
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public:
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enum Priority {
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LOG_DEBUG, LOG_ERROR, LOG_WARNING, LOG_INFO, LOG_VERBOSE
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};
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explicit LogStream(Priority p) noexcept : mPriority(p) {}
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ostream& flush() noexcept override;
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private:
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const Priority mPriority;
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};
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ostream& LogStream::flush() noexcept {
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std::lock_guard const lock(mImpl->mLock);
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Buffer& buf = getBuffer();
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char const* const str = buf.get();
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if (UTILS_UNLIKELY(!str)) {
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// this can happen if the log hasn't been written ever
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return *this;
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}
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#ifdef __ANDROID__
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int prio = ANDROID_LOG_UNKNOWN;
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switch (mPriority) {
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case LOG_DEBUG: prio = ANDROID_LOG_DEBUG; break;
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case LOG_ERROR: prio = ANDROID_LOG_ERROR; break;
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case LOG_WARNING: prio = ANDROID_LOG_WARN; break;
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case LOG_INFO: prio = ANDROID_LOG_INFO; break;
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case LOG_VERBOSE: prio = ANDROID_LOG_VERBOSE; break;
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}
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__android_log_write(prio, UTILS_LOG_TAG, str);
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#elif defined(__EMSCRIPTEN__)
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switch (mPriority) {
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case LOG_DEBUG:
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case LOG_WARNING:
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case LOG_INFO:
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_emscripten_out(str);
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break;
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case LOG_ERROR:
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_emscripten_err(str);
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break;
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case LOG_VERBOSE:
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#ifndef NFIL_DEBUG
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_emscripten_out(str);
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#endif
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break;
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}
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#else // not ANDROID or EMSCRIPTEN
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switch (mPriority) {
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case LOG_DEBUG:
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case LOG_WARNING:
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case LOG_INFO:
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fprintf(stdout, "%s", str);
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break;
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case LOG_ERROR:
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fprintf(stderr, "%s", str);
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break;
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case LOG_VERBOSE:
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#ifndef NDEBUG
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fprintf(stdout, "%s", str);
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#endif
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break;
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}
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#endif // __ANDROID__ or __EMSCRIPTEN__
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buf.reset();
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return *this;
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}
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/*
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* We can't use thread_local because on Android we're currently using several dynamic libraries
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* including this .o (via libutils.a), which violates the ODR and ends-up with only one of
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* the thread_local instance initialized.
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* For this reason, ostream is protected by a mutex instead.
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*/
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static LogStream cout(LogStream::Priority::LOG_DEBUG);
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static LogStream cerr(LogStream::Priority::LOG_ERROR);
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static LogStream cwarn(LogStream::Priority::LOG_WARNING);
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static LogStream cinfo(LogStream::Priority::LOG_INFO);
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static LogStream cverbose(LogStream::Priority::LOG_VERBOSE);
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} // namespace io
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Loggers const slog = {
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io::cout, // debug
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io::cerr, // error
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io::cwarn, // warning
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io::cinfo, // info
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io::cverbose // verbose
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};
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} // namespace utils
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