Use reference counted pointers for ApkAssets
The primary reason for memory corruption is freed ApkAssets
Java expected them to only be freed in the finalizers, but
there are explicit close() calls now, destroying objects that
are still in use in some AssetManager2 objects
This CL makes sure those AssetManagers don't assume ApkAssets
always exist, but instead tries to lock them in memory for any
access
It also adds logging in case of deleting an assets object with
any weak pointers still existing. Those will get into the
bugreports attached to related bugs to help with investigation.
Benchmarks don't regress, and the device appears to be working.
Given that the crashes used to be pretty rare, let's wait for
any new reports or lack of those.
+ add a missing .clang-format file to the jni directory
+ enabled C++23 in the project that uses AssetManager headers
Bug: 197260547
Bug: 276922628
Test: unit tests + boot + benchmarks
Change-Id: I495fd9e012fe370a1f725dbb0265b4ee1be8d805
diff --git a/tools/aapt2/cmd/Link_test.cpp b/tools/aapt2/cmd/Link_test.cpp
index e629baf..7096f5c 100644
--- a/tools/aapt2/cmd/Link_test.cpp
+++ b/tools/aapt2/cmd/Link_test.cpp
@@ -575,7 +575,7 @@
android::AssetManager2 am;
auto android_asset = android::ApkAssets::Load(android_apk);
ASSERT_THAT(android_asset, NotNull());
- ASSERT_TRUE(am.SetApkAssets({android_asset.get()}));
+ ASSERT_TRUE(am.SetApkAssets({android_asset}));
auto result = am.GetResourceId("android:attr/finalized_res");
ASSERT_TRUE(result.has_value());
@@ -631,7 +631,7 @@
auto app_against_non_final = android::ApkAssets::Load(app_apk);
ASSERT_THAT(android_asset, NotNull());
ASSERT_THAT(app_against_non_final, NotNull());
- ASSERT_TRUE(am.SetApkAssets({android_asset.get(), app_against_non_final.get()}));
+ ASSERT_TRUE(am.SetApkAssets({android_asset, app_against_non_final}));
auto result = am.GetResourceId("android:attr/finalized_res");
ASSERT_TRUE(result.has_value());
@@ -667,7 +667,7 @@
auto app_against_final = android::ApkAssets::Load(app_apk_respin);
ASSERT_THAT(app_against_final, NotNull());
- ASSERT_TRUE(am.SetApkAssets({android_asset.get(), app_against_final.get()}));
+ ASSERT_TRUE(am.SetApkAssets({android_asset, app_against_final}));
{
auto style = am.GetBag(0x7f020000);
diff --git a/tools/aapt2/process/SymbolTable.cpp b/tools/aapt2/process/SymbolTable.cpp
index bca62da..b75458a 100644
--- a/tools/aapt2/process/SymbolTable.cpp
+++ b/tools/aapt2/process/SymbolTable.cpp
@@ -220,15 +220,9 @@
bool AssetManagerSymbolSource::AddAssetPath(StringPiece path) {
TRACE_CALL();
- if (std::unique_ptr<const ApkAssets> apk = ApkAssets::Load(path.data())) {
+ if (auto apk = ApkAssets::Load(path.data())) {
apk_assets_.push_back(std::move(apk));
-
- std::vector<const ApkAssets*> apk_assets;
- for (const std::unique_ptr<const ApkAssets>& apk_asset : apk_assets_) {
- apk_assets.push_back(apk_asset.get());
- }
-
- asset_manager_.SetApkAssets(apk_assets);
+ asset_manager_.SetApkAssets(apk_assets_);
return true;
}
return false;
@@ -251,7 +245,7 @@
return true;
}
- for (const std::unique_ptr<const ApkAssets>& assets : apk_assets_) {
+ for (auto&& assets : apk_assets_) {
for (const std::unique_ptr<const android::LoadedPackage>& loaded_package
: assets->GetLoadedArsc()->GetPackages()) {
if (package_name == loaded_package->GetPackageName() && loaded_package->IsDynamic()) {
diff --git a/tools/aapt2/process/SymbolTable.h b/tools/aapt2/process/SymbolTable.h
index b09ff70..36eb0ba 100644
--- a/tools/aapt2/process/SymbolTable.h
+++ b/tools/aapt2/process/SymbolTable.h
@@ -207,8 +207,8 @@
}
private:
+ std::vector<android::AssetManager2::ApkAssetsPtr> apk_assets_;
android::AssetManager2 asset_manager_;
- std::vector<std::unique_ptr<const android::ApkAssets>> apk_assets_;
DISALLOW_COPY_AND_ASSIGN(AssetManagerSymbolSource);
};