hwc2: add locks for callback functions am: ccf7cd3bf2
Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/qcom/display/+/11837780
Change-Id: Iea046e43f3d5fb267b4150dc021b2a44dcb4dfdc
diff --git a/msm8998/sdm/libs/hwc2/hwc_callbacks.cpp b/msm8998/sdm/libs/hwc2/hwc_callbacks.cpp
index c52632a..e12e057 100644
--- a/msm8998/sdm/libs/hwc2/hwc_callbacks.cpp
+++ b/msm8998/sdm/libs/hwc2/hwc_callbacks.cpp
@@ -35,18 +35,21 @@
namespace sdm {
void HWCCallbacks::Hotplug(hwc2_display_t display, HWC2::Connection state) {
+ std::lock_guard<std::mutex> hotplug_lock(hotplug_mutex_);
if (hotplug_) {
hotplug_(hotplug_data_, display, INT32(state));
}
}
void HWCCallbacks::Refresh(hwc2_display_t display) {
+ std::lock_guard<std::mutex> refresh_lock(refresh_mutex_);
if (refresh_) {
refresh_(refresh_data_, display);
}
}
void HWCCallbacks::Vsync(hwc2_display_t display, int64_t timestamp) {
+ std::lock_guard<std::mutex> vsync_lock(vsync_mutex_);
if (vsync_) {
DTRACE_SCOPED();
vsync_(vsync_data_, display, timestamp);
@@ -56,18 +59,21 @@
HWC2::Error HWCCallbacks::Register(HWC2::Callback descriptor, hwc2_callback_data_t callback_data,
hwc2_function_pointer_t pointer) {
switch (descriptor) {
- case HWC2::Callback::Hotplug:
+ case HWC2::Callback::Hotplug: {
+ std::lock_guard<std::mutex> hotplug_lock(hotplug_mutex_);
hotplug_data_ = callback_data;
hotplug_ = reinterpret_cast<HWC2_PFN_HOTPLUG>(pointer);
- break;
- case HWC2::Callback::Refresh:
+ } break;
+ case HWC2::Callback::Refresh: {
+ std::lock_guard<std::mutex> refresh_lock(refresh_mutex_);
refresh_data_ = callback_data;
refresh_ = reinterpret_cast<HWC2_PFN_REFRESH>(pointer);
- break;
- case HWC2::Callback::Vsync:
+ } break;
+ case HWC2::Callback::Vsync: {
+ std::lock_guard<std::mutex> vsync_lock(vsync_mutex_);
vsync_data_ = callback_data;
vsync_ = reinterpret_cast<HWC2_PFN_VSYNC>(pointer);
- break;
+ } break;
default:
return HWC2::Error::BadParameter;
}
diff --git a/msm8998/sdm/libs/hwc2/hwc_callbacks.h b/msm8998/sdm/libs/hwc2/hwc_callbacks.h
index 015bf5d..6c1e696 100644
--- a/msm8998/sdm/libs/hwc2/hwc_callbacks.h
+++ b/msm8998/sdm/libs/hwc2/hwc_callbacks.h
@@ -36,6 +36,8 @@
#undef HWC2_INCLUDE_STRINGIFICATION
#undef HWC2_USE_CPP11
+#include <mutex>
+
namespace sdm {
class HWCCallbacks {
@@ -56,6 +58,10 @@
HWC2_PFN_HOTPLUG hotplug_ = nullptr;
HWC2_PFN_REFRESH refresh_ = nullptr;
HWC2_PFN_VSYNC vsync_ = nullptr;
+
+ std::mutex hotplug_mutex_;
+ std::mutex refresh_mutex_;
+ std::mutex vsync_mutex_;
};
} // namespace sdm
diff --git a/msm8998/sdm/libs/hwc2/hwc_session.cpp b/msm8998/sdm/libs/hwc2/hwc_session.cpp
index f077667..1331686 100644
--- a/msm8998/sdm/libs/hwc2/hwc_session.cpp
+++ b/msm8998/sdm/libs/hwc2/hwc_session.cpp
@@ -437,7 +437,7 @@
}
auto desc = static_cast<HWC2::Callback>(descriptor);
auto error = hwc_session->callbacks_.Register(desc, callback_data, pointer);
- DLOGD("Registering callback: %s", to_string(desc).c_str());
+ DLOGD("%s callback: %s", pointer ? "Registering" : "Deregistering", to_string(desc).c_str());
if (descriptor == HWC2_CALLBACK_HOTPLUG)
hwc_session->callbacks_.Hotplug(HWC_DISPLAY_PRIMARY, HWC2::Connection::Connected);
return INT32(error);