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-rw-r--r--libs/gui/Android.bp1
-rw-r--r--libs/gui/SurfaceComposerClient.cpp7
-rw-r--r--libs/gui/aidl/android/gui/ISurfaceComposer.aidl7
-rw-r--r--libs/gui/android/gui/StalledTransactionInfo.aidl24
-rw-r--r--libs/gui/fuzzer/libgui_fuzzer_utils.h2
-rw-r--r--libs/gui/include/gui/SurfaceComposerClient.h4
-rw-r--r--libs/gui/tests/Surface_test.cpp5
-rw-r--r--services/surfaceflinger/FrontEnd/TransactionHandler.cpp39
-rw-r--r--services/surfaceflinger/FrontEnd/TransactionHandler.h19
-rw-r--r--services/surfaceflinger/SurfaceFlinger.cpp40
-rw-r--r--services/surfaceflinger/SurfaceFlinger.h5
11 files changed, 135 insertions, 18 deletions
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index 3c8df2bb29..b9a8fb60aa 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -62,6 +62,7 @@ filegroup {
name: "guiconstants_aidl",
srcs: [
"android/gui/DropInputMode.aidl",
+ "android/gui/StalledTransactionInfo.aidl",
"android/**/TouchOcclusionMode.aidl",
],
}
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 48a97b2a7e..c905196665 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -1302,6 +1302,13 @@ sp<IBinder> SurfaceComposerClient::getPhysicalDisplayToken(PhysicalDisplayId dis
return status.isOk() ? display : nullptr;
}
+std::optional<gui::StalledTransactionInfo> SurfaceComposerClient::getStalledTransactionInfo(
+ pid_t pid) {
+ std::optional<gui::StalledTransactionInfo> result;
+ ComposerServiceAIDL::getComposerService()->getStalledTransactionInfo(pid, &result);
+ return result;
+}
+
void SurfaceComposerClient::Transaction::setAnimationTransaction() {
mAnimation = true;
}
diff --git a/libs/gui/aidl/android/gui/ISurfaceComposer.aidl b/libs/gui/aidl/android/gui/ISurfaceComposer.aidl
index 539a1c140e..7e652ac0b2 100644
--- a/libs/gui/aidl/android/gui/ISurfaceComposer.aidl
+++ b/libs/gui/aidl/android/gui/ISurfaceComposer.aidl
@@ -46,6 +46,7 @@ import android.gui.LayerDebugInfo;
import android.gui.OverlayProperties;
import android.gui.PullAtomData;
import android.gui.ARect;
+import android.gui.StalledTransactionInfo;
import android.gui.StaticDisplayInfo;
import android.gui.WindowInfosListenerInfo;
@@ -507,4 +508,10 @@ interface ISurfaceComposer {
void removeWindowInfosListener(IWindowInfosListener windowInfosListener);
OverlayProperties getOverlaySupport();
+
+ /**
+ * Returns an instance of StalledTransaction if a transaction from the passed pid has not been
+ * applied in SurfaceFlinger due to an unsignaled fence. Otherwise, null is returned.
+ */
+ @nullable StalledTransactionInfo getStalledTransactionInfo(int pid);
}
diff --git a/libs/gui/android/gui/StalledTransactionInfo.aidl b/libs/gui/android/gui/StalledTransactionInfo.aidl
new file mode 100644
index 0000000000..e6aa9bd1c7
--- /dev/null
+++ b/libs/gui/android/gui/StalledTransactionInfo.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.gui;
+
+/** @hide */
+parcelable StalledTransactionInfo {
+ String layerName;
+ long bufferId;
+ long frameNumber;
+} \ No newline at end of file
diff --git a/libs/gui/fuzzer/libgui_fuzzer_utils.h b/libs/gui/fuzzer/libgui_fuzzer_utils.h
index 4c7d0562af..c70197cb23 100644
--- a/libs/gui/fuzzer/libgui_fuzzer_utils.h
+++ b/libs/gui/fuzzer/libgui_fuzzer_utils.h
@@ -158,6 +158,8 @@ public:
MOCK_METHOD(binder::Status, removeWindowInfosListener, (const sp<gui::IWindowInfosListener>&),
(override));
MOCK_METHOD(binder::Status, getOverlaySupport, (gui::OverlayProperties*), (override));
+ MOCK_METHOD(binder::Status, getStalledTransactionInfo,
+ (int32_t, std::optional<gui::StalledTransactionInfo>*), (override));
};
class FakeBnSurfaceComposerClient : public gui::BnSurfaceComposerClient {
diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index 3cf57b11e9..dbcbd3bd62 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -371,6 +371,10 @@ public:
//! Get token for a physical display given its stable ID
static sp<IBinder> getPhysicalDisplayToken(PhysicalDisplayId displayId);
+ // Returns StalledTransactionInfo if a transaction from the provided pid has not been applied
+ // due to an unsignaled fence.
+ static std::optional<gui::StalledTransactionInfo> getStalledTransactionInfo(pid_t pid);
+
struct SCHash {
std::size_t operator()(const sp<SurfaceControl>& sc) const {
return std::hash<SurfaceControl *>{}(sc.get());
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index 567604dbec..d7910d26aa 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -1016,6 +1016,11 @@ public:
return binder::Status::ok();
}
+ binder::Status getStalledTransactionInfo(
+ int32_t /*pid*/, std::optional<gui::StalledTransactionInfo>* /*result*/) override {
+ return binder::Status::ok();
+ }
+
protected:
IBinder* onAsBinder() override { return nullptr; }
diff --git a/services/surfaceflinger/FrontEnd/TransactionHandler.cpp b/services/surfaceflinger/FrontEnd/TransactionHandler.cpp
index fa8eb3cf13..6e78e93650 100644
--- a/services/surfaceflinger/FrontEnd/TransactionHandler.cpp
+++ b/services/surfaceflinger/FrontEnd/TransactionHandler.cpp
@@ -186,21 +186,36 @@ bool TransactionHandler::hasPendingTransactions() {
}
void TransactionHandler::onTransactionQueueStalled(uint64_t transactionId,
- sp<ITransactionCompletedListener>& listener,
- const std::string& reason) {
- if (std::find(mStalledTransactions.begin(), mStalledTransactions.end(), transactionId) !=
- mStalledTransactions.end()) {
- return;
- }
+ StalledTransactionInfo stalledTransactionInfo) {
+ std::lock_guard lock{mStalledMutex};
+ mStalledTransactions.emplace(transactionId, std::move(stalledTransactionInfo));
+}
+
+void TransactionHandler::removeFromStalledTransactions(uint64_t transactionId) {
+ std::lock_guard lock{mStalledMutex};
+ mStalledTransactions.erase(transactionId);
+}
- mStalledTransactions.push_back(transactionId);
- listener->onTransactionQueueStalled(String8(reason.c_str()));
+std::optional<TransactionHandler::StalledTransactionInfo>
+TransactionHandler::getStalledTransactionInfo(pid_t pid) {
+ std::lock_guard lock{mStalledMutex};
+ for (auto [_, stalledTransactionInfo] : mStalledTransactions) {
+ if (pid == stalledTransactionInfo.pid) {
+ return stalledTransactionInfo;
+ }
+ }
+ return std::nullopt;
}
-void TransactionHandler::removeFromStalledTransactions(uint64_t id) {
- auto it = std::find(mStalledTransactions.begin(), mStalledTransactions.end(), id);
- if (it != mStalledTransactions.end()) {
- mStalledTransactions.erase(it);
+void TransactionHandler::onLayerDestroyed(uint32_t layerId) {
+ std::lock_guard lock{mStalledMutex};
+ for (auto it = mStalledTransactions.begin(); it != mStalledTransactions.end();) {
+ if (it->second.layerId == layerId) {
+ it = mStalledTransactions.erase(it);
+ } else {
+ it++;
+ }
}
}
+
} // namespace android::surfaceflinger::frontend
diff --git a/services/surfaceflinger/FrontEnd/TransactionHandler.h b/services/surfaceflinger/FrontEnd/TransactionHandler.h
index 865835f92d..ff54dc5450 100644
--- a/services/surfaceflinger/FrontEnd/TransactionHandler.h
+++ b/services/surfaceflinger/FrontEnd/TransactionHandler.h
@@ -18,6 +18,7 @@
#include <semaphore.h>
#include <cstdint>
+#include <optional>
#include <vector>
#include <LocklessQueue.h>
@@ -61,9 +62,18 @@ public:
std::vector<TransactionState> flushTransactions();
void addTransactionReadyFilter(TransactionFilter&&);
void queueTransaction(TransactionState&&);
- void onTransactionQueueStalled(uint64_t transactionId, sp<ITransactionCompletedListener>&,
- const std::string& reason);
+
+ struct StalledTransactionInfo {
+ pid_t pid;
+ uint32_t layerId;
+ std::string layerName;
+ uint64_t bufferId;
+ uint64_t frameNumber;
+ };
+ void onTransactionQueueStalled(uint64_t transactionId, StalledTransactionInfo);
void removeFromStalledTransactions(uint64_t transactionId);
+ std::optional<StalledTransactionInfo> getStalledTransactionInfo(pid_t pid);
+ void onLayerDestroyed(uint32_t layerId);
private:
// For unit tests
@@ -79,7 +89,10 @@ private:
LocklessQueue<TransactionState> mLocklessTransactionQueue;
std::atomic<size_t> mPendingTransactionCount = 0;
ftl::SmallVector<TransactionFilter, 2> mTransactionReadyFilters;
- std::vector<uint64_t> mStalledTransactions;
+
+ std::mutex mStalledMutex;
+ std::unordered_map<uint64_t /* transactionId */, StalledTransactionInfo> mStalledTransactions
+ GUARDED_BY(mStalledMutex);
};
} // namespace surfaceflinger::frontend
} // namespace android
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 9f8af907b6..d41318e7aa 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -4355,9 +4355,13 @@ TransactionHandler::TransactionReadiness SurfaceFlinger::transactionReadyBufferC
(flushState.queueProcessTime - transaction.postTime) >
std::chrono::nanoseconds(4s).count()) {
mTransactionHandler
- .onTransactionQueueStalled(transaction.id, listener,
- "Buffer processing hung up due to stuck "
- "fence. Indicates GPU hang");
+ .onTransactionQueueStalled(transaction.id,
+ {.pid = layer->getOwnerPid(),
+ .layerId = static_cast<uint32_t>(
+ layer->getSequence()),
+ .layerName = layer->getDebugName(),
+ .bufferId = s.bufferData->getId(),
+ .frameNumber = s.bufferData->frameNumber});
}
ATRACE_FORMAT("fence unsignaled %s", layer->getDebugName());
return TraverseBuffersReturnValues::STOP_TRAVERSAL;
@@ -5381,6 +5385,8 @@ void SurfaceFlinger::onHandleDestroyed(BBinder* handle, sp<Layer>& layer, uint32
mDestroyedHandles.emplace_back(layerId);
}
+ mTransactionHandler.onLayerDestroyed(layerId);
+
Mutex::Autolock lock(mStateLock);
markLayerPendingRemovalLocked(layer);
layer->onHandleDestroyed();
@@ -7981,6 +7987,12 @@ status_t SurfaceFlinger::removeWindowInfosListener(
return NO_ERROR;
}
+status_t SurfaceFlinger::getStalledTransactionInfo(
+ int pid, std::optional<TransactionHandler::StalledTransactionInfo>& result) {
+ result = mTransactionHandler.getStalledTransactionInfo(pid);
+ return NO_ERROR;
+}
+
std::shared_ptr<renderengine::ExternalTexture> SurfaceFlinger::getExternalTextureFromBufferData(
BufferData& bufferData, const char* layerName, uint64_t transactionId) {
if (bufferData.buffer &&
@@ -9085,6 +9097,28 @@ binder::Status SurfaceComposerAIDL::removeWindowInfosListener(
return binderStatusFromStatusT(status);
}
+binder::Status SurfaceComposerAIDL::getStalledTransactionInfo(
+ int pid, std::optional<gui::StalledTransactionInfo>* outInfo) {
+ const int callingPid = IPCThreadState::self()->getCallingPid();
+ const int callingUid = IPCThreadState::self()->getCallingUid();
+ if (!checkPermission(sAccessSurfaceFlinger, callingPid, callingUid)) {
+ return binderStatusFromStatusT(PERMISSION_DENIED);
+ }
+
+ std::optional<TransactionHandler::StalledTransactionInfo> stalledTransactionInfo;
+ status_t status = mFlinger->getStalledTransactionInfo(pid, stalledTransactionInfo);
+ if (stalledTransactionInfo) {
+ gui::StalledTransactionInfo result;
+ result.layerName = String16{stalledTransactionInfo->layerName.c_str()},
+ result.bufferId = stalledTransactionInfo->bufferId,
+ result.frameNumber = stalledTransactionInfo->frameNumber,
+ outInfo->emplace(std::move(result));
+ } else {
+ outInfo->reset();
+ }
+ return binderStatusFromStatusT(status);
+}
+
status_t SurfaceComposerAIDL::checkAccessPermission(bool usePermissionCache) {
if (!mFlinger->callingThreadHasUnscopedSurfaceFlingerAccess(usePermissionCache)) {
IPCThreadState* ipc = IPCThreadState::self();
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index f1759a5e52..34f4d340d3 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -618,6 +618,9 @@ private:
status_t removeWindowInfosListener(
const sp<gui::IWindowInfosListener>& windowInfosListener) const;
+ status_t getStalledTransactionInfo(
+ int pid, std::optional<TransactionHandler::StalledTransactionInfo>& result);
+
// Implements IBinder::DeathRecipient.
void binderDied(const wp<IBinder>& who) override;
@@ -1542,6 +1545,8 @@ public:
gui::WindowInfosListenerInfo* outInfo) override;
binder::Status removeWindowInfosListener(
const sp<gui::IWindowInfosListener>& windowInfosListener) override;
+ binder::Status getStalledTransactionInfo(int pid,
+ std::optional<gui::StalledTransactionInfo>* outInfo);
private:
static const constexpr bool kUsePermissionCache = true;
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-10-21 17:04:42 +0000