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Code Issues Releases Activity

npad: Fix data race when updating devices

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Add a lock to avoid data races.
This reduces the number of -fsanitize=thread errors significantly.
This commit is contained in:
Rodrigo Locatti 2021-06-22 03:16:21 -03:00
parent 0485b8e84b
commit 15cc561d12
2 changed files with 8 additions and 0 deletions
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4
src/core/hle/service/hid/controllers/npad.cpp
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@ -314,6 +314,8 @@ void Controller_NPad::OnInit() {
void Controller_NPad::OnLoadInputDevices() {
const auto& players = Settings::values.players.GetValue();
std::lock_guard lock{mutex};
for (std::size_t i = 0; i < players.size(); ++i) {
std::transform(players[i].buttons.begin() + Settings::NativeButton::BUTTON_HID_BEGIN,
players[i].buttons.begin() + Settings::NativeButton::BUTTON_HID_END,
@ -348,6 +350,8 @@ void Controller_NPad::OnRelease() {
}
void Controller_NPad::RequestPadStateUpdate(u32 npad_id) {
std::lock_guard lock{mutex};
const auto controller_idx = NPadIdToIndex(npad_id);
const auto controller_type = connected_controllers[controller_idx].type;
if (!connected_controllers[controller_idx].is_connected) {

4
src/core/hle/service/hid/controllers/npad.h
View file

@ -6,6 +6,8 @@
#include <array>
#include <atomic>
#include <mutex>
#include "common/bit_field.h"
#include "common/common_types.h"
#include "common/quaternion.h"
@ -563,6 +565,8 @@ private:
using MotionArray = std::array<
std::array<std::unique_ptr<Input::MotionDevice>, Settings::NativeMotion::NUM_MOTIONS_HID>,
10>;
std::mutex mutex;
ButtonArray buttons;
StickArray sticks;
VibrationArray vibrations;