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This change migrates off of the old fuchsia logging apis to use the structured logging apis. The initial FIDL connection is made during global initialization (before main()) and the initial minimum log level is queried from the system. Later on, once the main loop is initialized, we setup an async task to listen for additional log interest changes from the system. The advantage of doing this on the main loop is that we avoid spawning an additional background thread in the process (the legacy logging apis use the background thread approach). One added benefit of this change is it reduces the size of the dart/flutter runner far packages by about 250kb in release mode, because libsyslog.so and libbackend_fuchsia_globals.so are no longer needed. flutter/flutter#141924 ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide] and the [C++, Objective-C, Java style guides]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I added new tests to check the change I am making or feature I am adding, or the PR is [test-exempt]. See [testing the engine] for instructions on writing and running engine tests. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I signed the [CLA]. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/wiki/Tree-hygiene#overview [Tree Hygiene]: https://github.com/flutter/flutter/wiki/Tree-hygiene [test-exempt]: https://github.com/flutter/flutter/wiki/Tree-hygiene#tests [Flutter Style Guide]: https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style [testing the engine]: https://github.com/flutter/flutter/wiki/Testing-the-engine [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/wiki/Tree-hygiene#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/wiki/Chat
50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/fml/log_settings.h"
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#include <fcntl.h>
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#include <algorithm>
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#include <cstring>
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#include <iostream>
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#include <limits>
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#include "flutter/fml/build_config.h"
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#include "flutter/fml/log_level.h"
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#include "flutter/fml/logging.h"
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namespace fml {
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namespace state {
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// Defined in log_settings_state.cc.
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extern LogSettings g_log_settings;
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} // namespace state
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void SetLogSettings(const LogSettings& settings) {
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// Validate the new settings as we set them.
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state::g_log_settings.min_log_level =
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std::min(kLogFatal, settings.min_log_level);
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}
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LogSettings GetLogSettings() {
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return state::g_log_settings;
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}
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int GetMinLogLevel() {
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return std::min(state::g_log_settings.min_log_level, kLogFatal);
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}
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ScopedSetLogSettings::ScopedSetLogSettings(const LogSettings& settings) {
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old_settings_ = GetLogSettings();
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SetLogSettings(settings);
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}
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ScopedSetLogSettings::~ScopedSetLogSettings() {
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SetLogSettings(old_settings_);
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}
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} // namespace fml
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