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Common: Restore old log filter behavior (#4336)

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* Restore old log filter behavior

Not sure exactly why this hadn't happened yet.

* Suggested change

* Update documentation to include changes

* Remove mention of debug log class

Debug is both a valid class and level, kinda confusing to use it as an example in my opinion.

* Error instead of assert

* Missing include
This commit is contained in:
Stephen Miller 2026-04-30 15:00:21 -05:00 committed by GitHub
parent 5bfec866b1
commit e7d571c8da
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2 changed files with 15 additions and 9 deletions
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10
documents/Debugging/Debugging.md
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@ -64,13 +64,13 @@ You can configure the emulator by editing the `config.toml` file found in the `u
- It can be beneficial to set this to `false` for better performance.
- When communicating about issues with games and the log messages aren't clear due to potentially confusing order, set this to `true` and send that log instead.
- `filter`: Sets the logging category for various logging classes.
- Format: `<class>=<level>,...`
- Multiple classes can be set by separating them with a comma. (example: `Render=warning,Debug=critical,Lib.Pad=error`)
- Format: `<class>:<level> ...`
- Multiple classes can be set by separating them with a space. (example: `Render:Warning Lib.Pad:Error`)
- Sub-classes can be specified in the same format as seen in the console/log (such as `Core.Linker`).
- Valid log levels: `trace, debug, info, warning, error, critical` - in this order, setting a level silences all levels preceding it and logs every level after it.
- Valid log levels: `trace, debug, info, warning, error, critical, off` - in this order, setting a level silences all levels preceding it and logs every level after it.
- Examples:
- If the log is being spammed with messages coming from Lib.Pad, you can use `Lib.Pad=critical` to only log critical-level messages.
- If you'd like to mute everything, but still want to receive messages from Vulkan rendering: `off,Render.Vulkan=info` (if you want critical at least `critical,Render.Vulkan=info`)
- If the log is being spammed with messages coming from Lib.Pad, you can use `Lib.Pad:Critical` to only log critical-level messages.
- If you'd like to mute everything, but still want to receive messages from Vulkan rendering: `*:Off Render.Vulkan:Info` (if you want critical at least `*:Critical Render.Vulkan:Info`)
- `skipDuplicate`: Skip same lines with a `Skipped N duplicate messages..` message (`true`/`false`)
- By default, the emulator will skip same lines for `maxSkipDuration` milliseconds.
- `append`: Append log to the existing file (`true`/`false`)

14
src/common/logging/log.cpp
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@ -2,6 +2,7 @@
// SPDX-License-Identifier: GPL-2.0-or-later
#include <cstdlib>
#include <iostream>
#include <string>
#include "common/assert.h"
@ -200,12 +201,17 @@ void Setup(std::string_view log_filename) {
std::unordered_map<std::string, spdlog::level> log_level_per_class;
if (EmulatorSettings.IsLogEnable()) {
for (const auto class_level : std::views::split(EmulatorSettings.GetLogFilter(), ',')) {
for (const auto class_level : std::views::split(EmulatorSettings.GetLogFilter(), ' ')) {
const auto class_level_pair =
std::views::split(class_level, '=') | std::ranges::to<std::vector<std::string>>();
std::views::split(class_level, ':') | std::ranges::to<std::vector<std::string>>();
if (class_level_pair.size() == 1) {
default_log_level = spdlog::level_from_str(class_level_pair.front() |
if (class_level_pair.size() != 2) {
std::cerr << "bad log filter provided" << std::endl;
continue;
}
if (class_level_pair.front()[0] == '*') {
default_log_level = spdlog::level_from_str(class_level_pair.back() |
std::ranges::to<std::string>());
} else {
log_level_per_class[class_level_pair.front() | std::ranges::to<std::string>()] =