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/*
* Copyright (C) 2018 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_PROXY_TEST_H_
#define ART_RUNTIME_PROXY_TEST_H_
#include <jni.h>
#include <vector>
#include "art_method-inl.h"
#include "class_linker-inl.h"
#include "class_root.h"
#include "mirror/class-inl.h"
#include "mirror/method.h"
#include "obj_ptr-inl.h"
namespace art {
namespace proxy_test {
// Generate a proxy class with the given name and interfaces. This is a simplification from what
// libcore does to fit to our test needs. We do not check for duplicated interfaces or methods and
// we do not declare exceptions.
ObjPtr<mirror::Class> GenerateProxyClass(ScopedObjectAccess& soa,
jobject jclass_loader,
ClassLinker* class_linker,
const char* className,
const std::vector<Handle<mirror::Class>>& interfaces)
REQUIRES_SHARED(Locks::mutator_lock_) {
StackHandleScope<1> hs(soa.Self());
Handle<mirror::Class> javaLangObject = hs.NewHandle(GetClassRoot<mirror::Object>());
CHECK(javaLangObject != nullptr);
jclass javaLangClass = soa.AddLocalReference<jclass>(GetClassRoot<mirror::Class>());
// Builds the interfaces array.
jobjectArray proxyClassInterfaces =
soa.Env()->NewObjectArray(interfaces.size(), javaLangClass, /* initialElement= */ nullptr);
soa.Self()->AssertNoPendingException();
for (size_t i = 0; i < interfaces.size(); ++i) {
soa.Env()->SetObjectArrayElement(proxyClassInterfaces, i,
soa.AddLocalReference<jclass>(interfaces[i].Get()));
}
// Builds the method array.
jsize methods_count = 3; // Object.equals, Object.hashCode and Object.toString.
for (Handle<mirror::Class> interface : interfaces) {
methods_count += interface->NumVirtualMethods();
}
jobjectArray proxyClassMethods = soa.Env()->NewObjectArray(
methods_count,
soa.AddLocalReference<jclass>(GetClassRoot<mirror::Method>()),
/* initialElement= */ nullptr);
soa.Self()->AssertNoPendingException();
jsize array_index = 0;
// Fill the method array
DCHECK_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), kRuntimePointerSize);
ArtMethod* method = javaLangObject->FindClassMethod(
"equals", "(Ljava/lang/Object;)Z", kRuntimePointerSize);
CHECK(method != nullptr);
CHECK(!method->IsDirect());
CHECK(method->GetDeclaringClass() == javaLangObject.Get());
DCHECK(!Runtime::Current()->IsActiveTransaction());
soa.Env()->SetObjectArrayElement(
proxyClassMethods, array_index++, soa.AddLocalReference<jobject>(
mirror::Method::CreateFromArtMethod<kRuntimePointerSize, false>(soa.Self(), method)));
method = javaLangObject->FindClassMethod("hashCode", "()I", kRuntimePointerSize);
CHECK(method != nullptr);
CHECK(!method->IsDirect());
CHECK(method->GetDeclaringClass() == javaLangObject.Get());
soa.Env()->SetObjectArrayElement(
proxyClassMethods, array_index++, soa.AddLocalReference<jobject>(
mirror::Method::CreateFromArtMethod<kRuntimePointerSize, false>(soa.Self(), method)));
method = javaLangObject->FindClassMethod(
"toString", "()Ljava/lang/String;", kRuntimePointerSize);
CHECK(method != nullptr);
CHECK(!method->IsDirect());
CHECK(method->GetDeclaringClass() == javaLangObject.Get());
soa.Env()->SetObjectArrayElement(
proxyClassMethods, array_index++, soa.AddLocalReference<jobject>(
mirror::Method::CreateFromArtMethod<kRuntimePointerSize, false>(soa.Self(), method)));
// Now adds all interfaces virtual methods.
for (Handle<mirror::Class> interface : interfaces) {
for (auto& m : interface->GetDeclaredVirtualMethods(kRuntimePointerSize)) {
soa.Env()->SetObjectArrayElement(
proxyClassMethods, array_index++, soa.AddLocalReference<jobject>(
mirror::Method::CreateFromArtMethod<kRuntimePointerSize, false>(soa.Self(), &m)));
}
}
CHECK_EQ(array_index, methods_count);
// Builds an empty exception array.
jobjectArray proxyClassThrows = soa.Env()->NewObjectArray(0, javaLangClass, nullptr);
soa.Self()->AssertNoPendingException();
ObjPtr<mirror::Class> proxyClass = class_linker->CreateProxyClass(
soa,
soa.Env()->NewStringUTF(className),
proxyClassInterfaces,
jclass_loader,
proxyClassMethods,
proxyClassThrows);
soa.Self()->AssertNoPendingException();
return proxyClass;
}
} // namespace proxy_test
} // namespace art
#endif // ART_RUNTIME_PROXY_TEST_H_
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