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-rw-r--r--runtime/class_linker-inl.h116
1 files changed, 92 insertions, 24 deletions
diff --git a/runtime/class_linker-inl.h b/runtime/class_linker-inl.h
index c086dd2676..4b317f886f 100644
--- a/runtime/class_linker-inl.h
+++ b/runtime/class_linker-inl.h
@@ -61,16 +61,27 @@ inline mirror::Class* ClassLinker::FindArrayClass(Thread* self,
return array_class.Ptr();
}
-inline ObjPtr<mirror::Class> ClassLinker::LookupResolvedType(
- dex::TypeIndex type_idx,
- ObjPtr<mirror::DexCache> dex_cache,
- ObjPtr<mirror::ClassLoader> class_loader) {
- ObjPtr<mirror::Class> type = dex_cache->GetResolvedType(type_idx);
- if (type == nullptr) {
- type = Runtime::Current()->GetClassLinker()->LookupResolvedType(
- *dex_cache->GetDexFile(), type_idx, dex_cache, class_loader);
+inline ObjPtr<mirror::Class> ClassLinker::ResolveType(dex::TypeIndex type_idx,
+ ObjPtr<mirror::Class> referrer) {
+ if (kObjPtrPoisoning) {
+ StackHandleScope<1> hs(Thread::Current());
+ HandleWrapperObjPtr<mirror::Class> referrer_wrapper = hs.NewHandleWrapper(&referrer);
+ Thread::Current()->PoisonObjectPointers();
}
- return type;
+ if (kIsDebugBuild) {
+ Thread::Current()->AssertNoPendingException();
+ }
+ // We do not need the read barrier for getting the DexCache for the initial resolved type
+ // lookup as both from-space and to-space copies point to the same native resolved types array.
+ ObjPtr<mirror::Class> resolved_type =
+ referrer->GetDexCache<kDefaultVerifyFlags, kWithoutReadBarrier>()->GetResolvedType(type_idx);
+ if (resolved_type == nullptr) {
+ StackHandleScope<2> hs(Thread::Current());
+ Handle<mirror::DexCache> h_dex_cache(hs.NewHandle(referrer->GetDexCache()));
+ Handle<mirror::ClassLoader> class_loader(hs.NewHandle(referrer->GetClassLoader()));
+ resolved_type = DoResolveType(type_idx, h_dex_cache, class_loader);
+ }
+ return resolved_type;
}
inline ObjPtr<mirror::Class> ClassLinker::ResolveType(dex::TypeIndex type_idx,
@@ -79,18 +90,67 @@ inline ObjPtr<mirror::Class> ClassLinker::ResolveType(dex::TypeIndex type_idx,
if (kIsDebugBuild) {
Thread::Current()->AssertNoPendingException();
}
- ObjPtr<mirror::Class> resolved_type = referrer->GetDexCache()->GetResolvedType(type_idx);
+ // We do not need the read barrier for getting the DexCache for the initial resolved type
+ // lookup as both from-space and to-space copies point to the same native resolved types array.
+ ObjPtr<mirror::Class> resolved_type =
+ referrer->GetDexCache<kWithoutReadBarrier>()->GetResolvedType(type_idx);
if (UNLIKELY(resolved_type == nullptr)) {
StackHandleScope<2> hs(Thread::Current());
- ObjPtr<mirror::Class> declaring_class = referrer->GetDeclaringClass();
+ ObjPtr<mirror::Class> referring_class = referrer->GetDeclaringClass();
Handle<mirror::DexCache> dex_cache(hs.NewHandle(referrer->GetDexCache()));
- Handle<mirror::ClassLoader> class_loader(hs.NewHandle(declaring_class->GetClassLoader()));
- const DexFile& dex_file = *dex_cache->GetDexFile();
- resolved_type = ResolveType(dex_file, type_idx, dex_cache, class_loader);
+ Handle<mirror::ClassLoader> class_loader(hs.NewHandle(referring_class->GetClassLoader()));
+ resolved_type = DoResolveType(type_idx, dex_cache, class_loader);
}
return resolved_type;
}
+inline ObjPtr<mirror::Class> ClassLinker::ResolveType(dex::TypeIndex type_idx,
+ Handle<mirror::DexCache> dex_cache,
+ Handle<mirror::ClassLoader> class_loader) {
+ DCHECK(dex_cache != nullptr);
+ Thread::PoisonObjectPointersIfDebug();
+ ObjPtr<mirror::Class> resolved = dex_cache->GetResolvedType(type_idx);
+ if (resolved == nullptr) {
+ resolved = DoResolveType(type_idx, dex_cache, class_loader);
+ }
+ return resolved;
+}
+
+inline ObjPtr<mirror::Class> ClassLinker::LookupResolvedType(dex::TypeIndex type_idx,
+ ObjPtr<mirror::Class> referrer) {
+ // We do not need the read barrier for getting the DexCache for the initial resolved type
+ // lookup as both from-space and to-space copies point to the same native resolved types array.
+ ObjPtr<mirror::Class> type =
+ referrer->GetDexCache<kDefaultVerifyFlags, kWithoutReadBarrier>()->GetResolvedType(type_idx);
+ if (type == nullptr) {
+ type = DoLookupResolvedType(type_idx, referrer->GetDexCache(), referrer->GetClassLoader());
+ }
+ return type;
+}
+
+inline ObjPtr<mirror::Class> ClassLinker::LookupResolvedType(dex::TypeIndex type_idx,
+ ArtMethod* referrer) {
+ // We do not need the read barrier for getting the DexCache for the initial resolved type
+ // lookup as both from-space and to-space copies point to the same native resolved types array.
+ ObjPtr<mirror::Class> type =
+ referrer->GetDexCache<kWithoutReadBarrier>()->GetResolvedType(type_idx);
+ if (type == nullptr) {
+ type = DoLookupResolvedType(type_idx, referrer->GetDexCache(), referrer->GetClassLoader());
+ }
+ return type;
+}
+
+inline ObjPtr<mirror::Class> ClassLinker::LookupResolvedType(
+ dex::TypeIndex type_idx,
+ ObjPtr<mirror::DexCache> dex_cache,
+ ObjPtr<mirror::ClassLoader> class_loader) {
+ ObjPtr<mirror::Class> type = dex_cache->GetResolvedType(type_idx);
+ if (type == nullptr) {
+ type = DoLookupResolvedType(type_idx, dex_cache, class_loader);
+ }
+ return type;
+}
+
template <bool kThrowOnError, typename ClassGetter>
inline bool ClassLinker::CheckInvokeClassMismatch(ObjPtr<mirror::DexCache> dex_cache,
InvokeType type,
@@ -148,10 +208,9 @@ inline bool ClassLinker::CheckInvokeClassMismatch(ObjPtr<mirror::DexCache> dex_c
dex_cache,
type,
[this, dex_cache, method_idx, class_loader]() REQUIRES_SHARED(Locks::mutator_lock_) {
- const DexFile& dex_file = *dex_cache->GetDexFile();
- const DexFile::MethodId& method_id = dex_file.GetMethodId(method_idx);
+ const DexFile::MethodId& method_id = dex_cache->GetDexFile()->GetMethodId(method_idx);
ObjPtr<mirror::Class> klass =
- LookupResolvedType(dex_file, method_id.class_idx_, dex_cache, class_loader);
+ LookupResolvedType(method_id.class_idx_, dex_cache, class_loader);
DCHECK(klass != nullptr);
return klass;
});
@@ -187,6 +246,8 @@ inline ArtMethod* ClassLinker::GetResolvedMethod(uint32_t method_idx, ArtMethod*
// lookup in the context of the original method from where it steals the code.
// However, we delay the GetInterfaceMethodIfProxy() until needed.
DCHECK(!referrer->IsProxyMethod() || referrer->IsConstructor());
+ // We do not need the read barrier for getting the DexCache for the initial resolved method
+ // lookup as both from-space and to-space copies point to the same native resolved methods array.
ArtMethod* resolved_method = referrer->GetDexCache<kWithoutReadBarrier>()->GetResolvedMethod(
method_idx, image_pointer_size_);
if (resolved_method == nullptr) {
@@ -228,6 +289,8 @@ inline ArtMethod* ClassLinker::ResolveMethod(Thread* self,
// However, we delay the GetInterfaceMethodIfProxy() until needed.
DCHECK(!referrer->IsProxyMethod() || referrer->IsConstructor());
Thread::PoisonObjectPointersIfDebug();
+ // We do not need the read barrier for getting the DexCache for the initial resolved method
+ // lookup as both from-space and to-space copies point to the same native resolved methods array.
ArtMethod* resolved_method = referrer->GetDexCache<kWithoutReadBarrier>()->GetResolvedMethod(
method_idx, image_pointer_size_);
DCHECK(resolved_method == nullptr || !resolved_method->IsRuntimeMethod());
@@ -278,10 +341,13 @@ inline ArtMethod* ClassLinker::ResolveMethod(Thread* self,
inline ArtField* ClassLinker::LookupResolvedField(uint32_t field_idx,
ArtMethod* referrer,
bool is_static) {
- ObjPtr<mirror::DexCache> dex_cache = referrer->GetDexCache();
- ArtField* field = dex_cache->GetResolvedField(field_idx, image_pointer_size_);
+ // We do not need the read barrier for getting the DexCache for the initial resolved field
+ // lookup as both from-space and to-space copies point to the same native resolved fields array.
+ ArtField* field = referrer->GetDexCache<kWithoutReadBarrier>()->GetResolvedField(
+ field_idx, image_pointer_size_);
if (field == nullptr) {
- field = LookupResolvedField(field_idx, dex_cache, referrer->GetClassLoader(), is_static);
+ ObjPtr<mirror::ClassLoader> class_loader = referrer->GetDeclaringClass()->GetClassLoader();
+ field = LookupResolvedField(field_idx, referrer->GetDexCache(), class_loader, is_static);
}
return field;
}
@@ -290,13 +356,15 @@ inline ArtField* ClassLinker::ResolveField(uint32_t field_idx,
ArtMethod* referrer,
bool is_static) {
Thread::PoisonObjectPointersIfDebug();
- ObjPtr<mirror::Class> declaring_class = referrer->GetDeclaringClass();
- ArtField* resolved_field =
- referrer->GetDexCache()->GetResolvedField(field_idx, image_pointer_size_);
+ // We do not need the read barrier for getting the DexCache for the initial resolved field
+ // lookup as both from-space and to-space copies point to the same native resolved fields array.
+ ArtField* resolved_field = referrer->GetDexCache<kWithoutReadBarrier>()->GetResolvedField(
+ field_idx, image_pointer_size_);
if (UNLIKELY(resolved_field == nullptr)) {
StackHandleScope<2> hs(Thread::Current());
+ ObjPtr<mirror::Class> referring_class = referrer->GetDeclaringClass();
Handle<mirror::DexCache> dex_cache(hs.NewHandle(referrer->GetDexCache()));
- Handle<mirror::ClassLoader> class_loader(hs.NewHandle(declaring_class->GetClassLoader()));
+ Handle<mirror::ClassLoader> class_loader(hs.NewHandle(referring_class->GetClassLoader()));
resolved_field = ResolveField(field_idx, dex_cache, class_loader, is_static);
// Note: We cannot check here to see whether we added the field to the cache. The type
// might be an erroneous class, which results in it being hidden from us.
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-10-20 17:43:18 +0000