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Logger: Cache 'flush_stdout_on_print' to improve performance, and works before ProjectSettings starts.

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ProjectSetting: Now 'application/run/flush_stdout_on_print' requires a restart of the Editor to take effect

(cherry picked from commit 89283b7b53)
This commit is contained in:
Mateo Kuruk Miccino 2021-02-28 19:26:14 -03:00 committed by Rémi Verschelde
parent 279b9f43f3
commit 04fefed904
4 changed files with 18 additions and 4 deletions
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10
core/io/logger.cpp
View file

@ -54,6 +54,12 @@ bool Logger::should_log(bool p_err) {
return (!p_err || _print_error_enabled) && (p_err || _print_line_enabled);
}
bool Logger::_flush_stdout_on_print = true;
void Logger::set_flush_stdout_on_print(bool value) {
_flush_stdout_on_print = value;
}
void Logger::log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, ErrorType p_type) {
if (!should_log(true)) {
return;
@ -210,7 +216,7 @@ void RotatedFileLogger::logv(const char *p_format, va_list p_list, bool p_err) {
Memory::free_static(buf);
}
if (p_err || !ProjectSettings::get_singleton() || GLOBAL_GET("application/run/flush_stdout_on_print")) {
if (p_err || _flush_stdout_on_print) {
// Don't always flush when printing stdout to avoid performance
// issues when `print()` is spammed in release builds.
file->flush();
@ -231,7 +237,7 @@ void StdLogger::logv(const char *p_format, va_list p_list, bool p_err) {
vfprintf(stderr, p_format, p_list);
} else {
vprintf(p_format, p_list);
if (!ProjectSettings::get_singleton() || GLOBAL_GET("application/run/flush_stdout_on_print")) {
if (_flush_stdout_on_print) {
// Don't always flush when printing stdout to avoid performance
// issues when `print()` is spammed in release builds.
fflush(stdout);

4
core/io/logger.h
View file

@ -41,6 +41,8 @@ class Logger {
protected:
bool should_log(bool p_err);
static bool _flush_stdout_on_print;
public:
enum ErrorType {
ERR_ERROR,
@ -49,6 +51,8 @@ public:
ERR_SHADER
};
static void set_flush_stdout_on_print(bool value);
virtual void logv(const char *p_format, va_list p_list, bool p_err) _PRINTF_FORMAT_ATTRIBUTE_2_0 = 0;
virtual void log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, ErrorType p_type = ERR_ERROR);

2
doc/classes/ProjectSettings.xml
View file

@ -252,9 +252,11 @@
If [code]true[/code], flushes the standard output stream every time a line is printed. This affects both terminal logging and file logging.
When running a project, this setting must be enabled if you want logs to be collected by service managers such as systemd/journalctl. This setting is disabled by default on release builds, since flushing on every printed line will negatively affect performance if lots of lines are printed in a rapid succession. Also, if this setting is enabled, logged files will still be written successfully if the application crashes or is otherwise killed by the user (without being closed "normally").
[b]Note:[/b] Regardless of this setting, the standard error stream ([code]stderr[/code]) is always flushed when a line is printed to it.
Changes to this setting will only be applied upon restarting the application.
</member>
<member name="application/run/flush_stdout_on_print.debug" type="bool" setter="" getter="" default="true">
Debug build override for [member application/run/flush_stdout_on_print], as performance is less important during debugging.
Changes to this setting will only be applied upon restarting the application.
</member>
<member name="application/run/frame_delay_msec" type="int" setter="" getter="" default="0">
Forces a delay between frames in the main loop (in milliseconds). This may be useful if you plan to disable vertical synchronization.

6
main/main.cpp
View file

@ -980,8 +980,8 @@ Error Main::setup(const char *execpath, int argc, char *argv[], bool p_second_ph
// Only flush stdout in debug builds by default, as spamming `print()` will
// decrease performance if this is enabled.
GLOBAL_DEF("application/run/flush_stdout_on_print", false);
GLOBAL_DEF("application/run/flush_stdout_on_print.debug", true);
GLOBAL_DEF_RST("application/run/flush_stdout_on_print", false);
GLOBAL_DEF_RST("application/run/flush_stdout_on_print.debug", true);
GLOBAL_DEF("logging/file_logging/enable_file_logging", false);
// Only file logging by default on desktop platforms as logs can't be
@ -1029,6 +1029,8 @@ Error Main::setup(const char *execpath, int argc, char *argv[], bool p_second_ph
if (quiet_stdout)
_print_line_enabled = false;
Logger::set_flush_stdout_on_print(ProjectSettings::get_singleton()->get("application/run/flush_stdout_on_print"));
OS::get_singleton()->set_cmdline(execpath, main_args);
GLOBAL_DEF("rendering/quality/driver/driver_name", "GLES3");