Remove object_utils.h.
Break into object_lock, field_helper and method_helper.
Clean up header files following this.
Also tidy some of the Handle code in response to compiler errors when resolving
the changes in this CL.
Change-Id: I73e63015a0f02a754d0866bfaf58208aebcaa295
diff --git a/runtime/method_helper.h b/runtime/method_helper.h
new file mode 100644
index 0000000..012695e
--- /dev/null
+++ b/runtime/method_helper.h
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+#ifndef ART_RUNTIME_METHOD_HELPER_H_
+#define ART_RUNTIME_METHOD_HELPER_H_
+
+#include "base/macros.h"
+#include "handle.h"
+#include "mirror/art_method.h"
+#include "primitive.h"
+
+namespace art {
+
+class MethodHelper {
+ public:
+ explicit MethodHelper(Handle<mirror::ArtMethod> m) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
+ : method_(m), shorty_(nullptr), shorty_len_(0) {
+ SetMethod(m.Get());
+ }
+
+ void ChangeMethod(mirror::ArtMethod* new_m) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ DCHECK(new_m != nullptr);
+ SetMethod(new_m);
+ shorty_ = nullptr;
+ }
+
+ mirror::ArtMethod* GetMethod() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ return method_->GetInterfaceMethodIfProxy();
+ }
+
+ mirror::String* GetNameAsString(Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+ const char* GetShorty() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ const char* result = shorty_;
+ if (result == nullptr) {
+ result = method_->GetShorty(&shorty_len_);
+ shorty_ = result;
+ }
+ return result;
+ }
+
+ uint32_t GetShortyLength() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ if (shorty_ == nullptr) {
+ GetShorty();
+ }
+ return shorty_len_;
+ }
+
+ // Counts the number of references in the parameter list of the corresponding method.
+ // Note: Thus does _not_ include "this" for non-static methods.
+ uint32_t GetNumberOfReferenceArgsWithoutReceiver() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ const char* shorty = GetShorty();
+ uint32_t refs = 0;
+ for (uint32_t i = 1; i < shorty_len_ ; ++i) {
+ if (shorty[i] == 'L') {
+ refs++;
+ }
+ }
+
+ return refs;
+ }
+
+ // May cause thread suspension due to GetClassFromTypeIdx calling ResolveType this caused a large
+ // number of bugs at call sites.
+ mirror::Class* GetReturnType(bool resolve = true) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ mirror::ArtMethod* method = GetMethod();
+ const DexFile* dex_file = method->GetDexFile();
+ const DexFile::MethodId& method_id = dex_file->GetMethodId(method->GetDexMethodIndex());
+ const DexFile::ProtoId& proto_id = dex_file->GetMethodPrototype(method_id);
+ uint16_t return_type_idx = proto_id.return_type_idx_;
+ return GetClassFromTypeIdx(return_type_idx, resolve);
+ }
+
+ size_t NumArgs() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ // "1 +" because the first in Args is the receiver.
+ // "- 1" because we don't count the return type.
+ return (method_->IsStatic() ? 0 : 1) + GetShortyLength() - 1;
+ }
+
+ // Get the primitive type associated with the given parameter.
+ Primitive::Type GetParamPrimitiveType(size_t param) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ CHECK_LT(param, NumArgs());
+ if (GetMethod()->IsStatic()) {
+ param++; // 0th argument must skip return value at start of the shorty
+ } else if (param == 0) {
+ return Primitive::kPrimNot;
+ }
+ return Primitive::GetType(GetShorty()[param]);
+ }
+
+ // Is the specified parameter a long or double, where parameter 0 is 'this' for instance methods.
+ bool IsParamALongOrDouble(size_t param) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ Primitive::Type type = GetParamPrimitiveType(param);
+ return type == Primitive::kPrimLong || type == Primitive::kPrimDouble;
+ }
+
+ // Is the specified parameter a reference, where parameter 0 is 'this' for instance methods.
+ bool IsParamAReference(size_t param) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ return GetParamPrimitiveType(param) == Primitive::kPrimNot;
+ }
+
+ bool HasSameNameAndSignature(MethodHelper* other) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+ bool HasSameSignatureWithDifferentClassLoaders(MethodHelper* other)
+ SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ if (UNLIKELY(GetReturnType() != other->GetReturnType())) {
+ return false;
+ }
+ const DexFile::TypeList* types = method_->GetParameterTypeList();
+ const DexFile::TypeList* other_types = other->method_->GetParameterTypeList();
+ if (types == nullptr) {
+ return (other_types == nullptr) || (other_types->Size() == 0);
+ } else if (UNLIKELY(other_types == nullptr)) {
+ return types->Size() == 0;
+ }
+ uint32_t num_types = types->Size();
+ if (UNLIKELY(num_types != other_types->Size())) {
+ return false;
+ }
+ for (uint32_t i = 0; i < num_types; ++i) {
+ mirror::Class* param_type = GetClassFromTypeIdx(types->GetTypeItem(i).type_idx_);
+ mirror::Class* other_param_type =
+ other->GetClassFromTypeIdx(other_types->GetTypeItem(i).type_idx_);
+ if (UNLIKELY(param_type != other_param_type)) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ mirror::Class* GetClassFromTypeIdx(uint16_t type_idx, bool resolve = true)
+ SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+ mirror::String* ResolveString(uint32_t string_idx) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+ uint32_t FindDexMethodIndexInOtherDexFile(const DexFile& other_dexfile)
+ SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+ // The name_and_signature_idx MUST point to a MethodId with the same name and signature in the
+ // other_dexfile, such as the method index used to resolve this method in the other_dexfile.
+ uint32_t FindDexMethodIndexInOtherDexFile(const DexFile& other_dexfile,
+ uint32_t name_and_signature_idx)
+ SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+ private:
+ // Set the method_ field, for proxy methods looking up the interface method via the resolved
+ // methods table.
+ void SetMethod(mirror::ArtMethod* method) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+ method_.Assign(method);
+ }
+
+ Handle<mirror::ArtMethod> method_;
+ const char* shorty_;
+ uint32_t shorty_len_;
+
+ DISALLOW_COPY_AND_ASSIGN(MethodHelper);
+};
+
+} // namespace art
+
+#endif // ART_RUNTIME_METHOD_HELPER_H_