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CLI: add "high-res-timer" argument (defaults to 1)

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This commit is contained in:
Megamouse 2021-09-18 00:15:01 +02:00
parent 14a425e487
commit ebde86b967
1 changed files with 26 additions and 3 deletions
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29
rpcs3/main.cpp
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@ -241,6 +241,7 @@ constexpr auto arg_user_id = "user-id";
constexpr auto arg_installfw = "installfw"; constexpr auto arg_installfw = "installfw";
constexpr auto arg_installpkg = "installpkg"; constexpr auto arg_installpkg = "installpkg";
constexpr auto arg_commit_db = "get-commit-db"; constexpr auto arg_commit_db = "get-commit-db";
constexpr auto arg_timer = "high-res-timer";
int find_arg(std::string arg, int& argc, char* argv[]) int find_arg(std::string arg, int& argc, char* argv[])
{ {
@ -534,6 +535,7 @@ int main(int argc, char** argv)
parser.addOption(QCommandLineOption(arg_error, "For internal usage.")); parser.addOption(QCommandLineOption(arg_error, "For internal usage."));
parser.addOption(QCommandLineOption(arg_updating, "For internal usage.")); parser.addOption(QCommandLineOption(arg_updating, "For internal usage."));
parser.addOption(QCommandLineOption(arg_commit_db, "Update commits.lst cache. Optional arguments: <path> <sha>")); parser.addOption(QCommandLineOption(arg_commit_db, "Update commits.lst cache. Optional arguments: <path> <sha>"));
parser.addOption(QCommandLineOption(arg_timer, "Enable high resolution timer for better performance (windows)", "enabled", "1"));
parser.process(app->arguments()); parser.process(app->arguments());
// Don't start up the full rpcs3 gui if we just want the version or help. // Don't start up the full rpcs3 gui if we just want the version or help.
@ -828,12 +830,33 @@ int main(int argc, char** argv)
QTimer* dummy_timer = new QTimer(app.data()); QTimer* dummy_timer = new QTimer(app.data());
dummy_timer->start(13); dummy_timer->start(13);
ULONG min_res, max_res, orig_res;
bool got_timer_resolution = NtQueryTimerResolution(&min_res, &max_res, &orig_res) == 0;
// Set 0.5 msec timer resolution for best performance // Set 0.5 msec timer resolution for best performance
// - As QT5 timers (QTimer) sets the timer resolution to 1 msec, override it here. // - As QT5 timers (QTimer) sets the timer resolution to 1 msec, override it here.
ULONG min_res, max_res, orig_res, new_res; if (parser.value(arg_timer).toStdString() == "1")
if (NtQueryTimerResolution(&min_res, &max_res, &orig_res) == 0)
{ {
NtSetTimerResolution(max_res, TRUE, &new_res); ULONG new_res;
if (got_timer_resolution && NtSetTimerResolution(max_res, TRUE, &new_res) == 0)
{
NtSetTimerResolution(max_res, TRUE, &new_res);
sys_log.notice("New timer resolution: %d us (old=%d us, min=%d us, max=%d us)", new_res / 10, orig_res / 10, min_res / 10, max_res / 10);
got_timer_resolution = false; // Invalidate for log message later
}
else
{
sys_log.error("Failed to set timer resolution!");
}
}
else
{
sys_log.warning("High resolution timer disabled!");
}
if (got_timer_resolution)
{
sys_log.notice("Timer resolution: %d us (min=%d us, max=%d us)", orig_res / 10, min_res / 10, max_res / 10);
} }
#endif #endif