Adapt addClientLayer to LayerHierarchy.
Method addClientLayer still traverses mDrawingState, which is not
adapted after LayerLifecycleManager enabled. Dump info through
LayerHierarchyBuilder.
Flag: EXEMPT bugfix
Bug: 341641452
Test: Manual
Change-Id: I781696548138dfcb1ec3e463a32ae5b399f10eac
diff --git a/services/surfaceflinger/FrontEnd/LayerHierarchy.cpp b/services/surfaceflinger/FrontEnd/LayerHierarchy.cpp
index f4335f3..d709530 100644
--- a/services/surfaceflinger/FrontEnd/LayerHierarchy.cpp
+++ b/services/surfaceflinger/FrontEnd/LayerHierarchy.cpp
@@ -18,6 +18,8 @@
#undef LOG_TAG
#define LOG_TAG "SurfaceFlinger"
+#include <android-base/logging.h>
+
#include "LayerHierarchy.h"
#include "LayerLog.h"
#include "SwapErase.h"
@@ -485,6 +487,55 @@
return it->second;
}
+void LayerHierarchyBuilder::logSampledChildren(const LayerHierarchy& hierarchy) const {
+ LOG(ERROR) << "Dumping random sampling of child layers.";
+ int sampleSize = static_cast<int>(hierarchy.mChildren.size() / 100 + 1);
+ for (const auto& [child, variant] : hierarchy.mChildren) {
+ if (rand() % sampleSize == 0) {
+ LOG(ERROR) << "Child Layer: " << *(child->mLayer);
+ }
+ }
+}
+
+void LayerHierarchyBuilder::dumpLayerSample(const LayerHierarchy& root) const {
+ LOG(ERROR) << "Dumping layer keeping > 20 children alive:";
+ // If mLayer is nullptr, it will be skipped while traversing.
+ if (!root.mLayer && root.mChildren.size() > 20) {
+ LOG(ERROR) << "ROOT has " << root.mChildren.size() << " children";
+ logSampledChildren(root);
+ }
+ root.traverse([&](const LayerHierarchy& hierarchy, const auto&) -> bool {
+ if (hierarchy.mChildren.size() <= 20) {
+ return true;
+ }
+ // mLayer is ensured to be non-null. See LayerHierarchy::traverse.
+ const auto* layer = hierarchy.mLayer;
+ const auto childrenCount = hierarchy.mChildren.size();
+ LOG(ERROR) << "Layer " << *layer << " has " << childrenCount << " children";
+
+ const auto* parent = hierarchy.mParent;
+ while (parent != nullptr) {
+ if (!parent->mLayer) break;
+ LOG(ERROR) << "Parent Layer: " << *(parent->mLayer);
+ parent = parent->mParent;
+ }
+
+ logSampledChildren(hierarchy);
+ // Stop traversing.
+ return false;
+ });
+ LOG(ERROR) << "Dumping random sampled layers.";
+ size_t numLayers = 0;
+ root.traverse([&](const LayerHierarchy& hierarchy, const auto&) -> bool {
+ if (hierarchy.mLayer) numLayers++;
+ if ((rand() % 20 == 13) && hierarchy.mLayer) {
+ LOG(ERROR) << "Layer: " << *(hierarchy.mLayer);
+ }
+ return true;
+ });
+ LOG(ERROR) << "Total layer count: " << numLayers;
+}
+
const LayerHierarchy::TraversalPath LayerHierarchy::TraversalPath::ROOT =
{.id = UNASSIGNED_LAYER_ID, .variant = LayerHierarchy::Attached};
diff --git a/services/surfaceflinger/FrontEnd/LayerHierarchy.h b/services/surfaceflinger/FrontEnd/LayerHierarchy.h
index d023f9e..47d0041 100644
--- a/services/surfaceflinger/FrontEnd/LayerHierarchy.h
+++ b/services/surfaceflinger/FrontEnd/LayerHierarchy.h
@@ -211,8 +211,11 @@
const LayerHierarchy& getHierarchy() const;
const LayerHierarchy& getOffscreenHierarchy() const;
std::string getDebugString(uint32_t layerId, uint32_t depth = 0) const;
+ void dumpLayerSample(const LayerHierarchy& layerHierarchy) const;
private:
+ void logSampledChildren(const LayerHierarchy& hierarchy) const;
+
void onLayerAdded(RequestedLayerState* layer);
void attachToParent(LayerHierarchy*);
void detachFromParent(LayerHierarchy*);
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 9eca01a..09fe52d 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -4473,60 +4473,22 @@
const sp<Layer>& layer, const wp<Layer>& parent,
uint32_t* outTransformHint) {
if (mNumLayers >= MAX_LAYERS) {
+ static std::atomic<nsecs_t> lasttime{0};
+ nsecs_t now = systemTime();
+ if (lasttime != 0 && ns2s(now - lasttime.load()) < 10) {
+ ALOGE("AddClientLayer already dumped 10s before");
+ return NO_MEMORY;
+ } else {
+ lasttime = now;
+ }
+
ALOGE("AddClientLayer failed, mNumLayers (%zu) >= MAX_LAYERS (%zu)", mNumLayers.load(),
MAX_LAYERS);
- static_cast<void>(mScheduler->schedule([=, this] {
- ALOGE("Dumping layer keeping > 20 children alive:");
- bool leakingParentLayerFound = false;
- mDrawingState.traverse([&](Layer* layer) {
- if (leakingParentLayerFound) {
- return;
- }
- if (layer->getChildrenCount() > 20) {
- leakingParentLayerFound = true;
- sp<Layer> parent = sp<Layer>::fromExisting(layer);
- while (parent) {
- ALOGE("Parent Layer: %s%s", parent->getName().c_str(),
- (parent->isHandleAlive() ? "handleAlive" : ""));
- parent = parent->getParent();
- }
- // Sample up to 100 layers
- ALOGE("Dumping random sampling of child layers total(%zu): ",
- layer->getChildrenCount());
- int sampleSize = (layer->getChildrenCount() / 100) + 1;
- layer->traverseChildren([&](Layer* layer) {
- if (rand() % sampleSize == 0) {
- ALOGE("Child Layer: %s%s", layer->getName().c_str(),
- (layer->isHandleAlive() ? "handleAlive" : ""));
- }
- });
- }
- });
-
- int numLayers = 0;
- mDrawingState.traverse([&](Layer* layer) { numLayers++; });
-
- ALOGE("Dumping random sampling of on-screen layers total(%u):", numLayers);
- mDrawingState.traverse([&](Layer* layer) {
- // Aim to dump about 200 layers to avoid totally trashing
- // logcat. On the other hand, if there really are 4096 layers
- // something has gone totally wrong its probably the most
- // useful information in logcat.
- if (rand() % 20 == 13) {
- ALOGE("Layer: %s%s", layer->getName().c_str(),
- (layer->isHandleAlive() ? "handleAlive" : ""));
- std::this_thread::sleep_for(std::chrono::milliseconds(5));
- }
- });
- ALOGE("Dumping random sampling of off-screen layers total(%zu): ",
- mOffscreenLayers.size());
- for (Layer* offscreenLayer : mOffscreenLayers) {
- if (rand() % 20 == 13) {
- ALOGE("Offscreen-layer: %s%s", offscreenLayer->getName().c_str(),
- (offscreenLayer->isHandleAlive() ? "handleAlive" : ""));
- std::this_thread::sleep_for(std::chrono::milliseconds(5));
- }
- }
+ static_cast<void>(mScheduler->schedule([&]() FTL_FAKE_GUARD(kMainThreadContext) {
+ ALOGE("Dumping on-screen layers.");
+ mLayerHierarchyBuilder.dumpLayerSample(mLayerHierarchyBuilder.getHierarchy());
+ ALOGE("Dumping off-screen layers.");
+ mLayerHierarchyBuilder.dumpLayerSample(mLayerHierarchyBuilder.getOffscreenHierarchy());
}));
return NO_MEMORY;
}