/*
* Copyright (C) 2014 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.
*/
#include <jni.h>
#include <vector>
#include "art_field-inl.h"
#include "class_linker-inl.h"
#include "common_compiler_test.h"
#include "mirror/field-inl.h"
#include "mirror/method.h"
#include "scoped_thread_state_change.h"
namespace art {
class ProxyTest : public CommonCompilerTest {
public:
// 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.
mirror::Class* GenerateProxyClass(ScopedObjectAccess& soa, jobject jclass_loader,
const char* className,
const std::vector<mirror::Class*>& interfaces)
SHARED_REQUIRES(Locks::mutator_lock_) {
mirror::Class* javaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
CHECK(javaLangObject != nullptr);
jclass javaLangClass = soa.AddLocalReference<jclass>(mirror::Class::GetJavaLangClass());
// Builds the interfaces array.
jobjectArray proxyClassInterfaces = soa.Env()->NewObjectArray(interfaces.size(), javaLangClass,
nullptr);
soa.Self()->AssertNoPendingException();
for (size_t i = 0; i < interfaces.size(); ++i) {
soa.Env()->SetObjectArrayElement(proxyClassInterfaces, i,
soa.AddLocalReference<jclass>(interfaces[i]));
}
// Builds the method array.
jsize methods_count = 3; // Object.equals, Object.hashCode and Object.toString.
for (mirror::Class* interface : interfaces) {
methods_count += interface->NumVirtualMethods();
}
jobjectArray proxyClassMethods = soa.Env()->NewObjectArray(
methods_count, soa.AddLocalReference<jclass>(mirror::Method::StaticClass()), nullptr);
soa.Self()->AssertNoPendingException();
jsize array_index = 0;
// Fill the method array
ArtMethod* method = javaLangObject->FindDeclaredVirtualMethod(
"equals", "(Ljava/lang/Object;)Z", sizeof(void*));
CHECK(method != nullptr);
soa.Env()->SetObjectArrayElement(
proxyClassMethods, array_index++, soa.AddLocalReference<jobject>(
mirror::Method::CreateFromArtMethod(soa.Self(), method)));
method = javaLangObject->FindDeclaredVirtualMethod("hashCode", "()I", sizeof(void*));
CHECK(method != nullptr);
soa.Env()->SetObjectArrayElement(
proxyClassMethods, array_index++, soa.AddLocalReference<jobject>(
mirror::Method::CreateFromArtMethod(soa.Self(), method)));
method = javaLangObject->FindDeclaredVirtualMethod(
"toString", "()Ljava/lang/String;", sizeof(void*));
CHECK(method != nullptr);
soa.Env()->SetObjectArrayElement(
proxyClassMethods, array_index++, soa.AddLocalReference<jobject>(
mirror::Method::CreateFromArtMethod(soa.Self(), method)));
// Now adds all interfaces virtual methods.
for (mirror::Class* interface : interfaces) {
for (auto& m : interface->GetDeclaredVirtualMethods(sizeof(void*))) {
soa.Env()->SetObjectArrayElement(
proxyClassMethods, array_index++, soa.AddLocalReference<jobject>(
mirror::Method::CreateFromArtMethod(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();
mirror::Class* proxyClass = class_linker_->CreateProxyClass(
soa, soa.Env()->NewStringUTF(className), proxyClassInterfaces, jclass_loader,
proxyClassMethods, proxyClassThrows);
soa.Self()->AssertNoPendingException();
return proxyClass;
}
};
// Creates a proxy class and check ClassHelper works correctly.
TEST_F(ProxyTest, ProxyClassHelper) {
ScopedObjectAccess soa(Thread::Current());
jobject jclass_loader = LoadDex("Interfaces");
StackHandleScope<4> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
Handle<mirror::Class> I(hs.NewHandle(
class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
Handle<mirror::Class> J(hs.NewHandle(
class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
ASSERT_TRUE(I.Get() != nullptr);
ASSERT_TRUE(J.Get() != nullptr);
std::vector<mirror::Class*> interfaces;
interfaces.push_back(I.Get());
interfaces.push_back(J.Get());
Handle<mirror::Class> proxy_class(hs.NewHandle(
GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces)));
interfaces.clear(); // Don't least possibly stale objects in the array as good practice.
ASSERT_TRUE(proxy_class.Get() != nullptr);
ASSERT_TRUE(proxy_class->IsProxyClass());
ASSERT_TRUE(proxy_class->IsInitialized());
EXPECT_EQ(2U, proxy_class->NumDirectInterfaces()); // Interfaces$I and Interfaces$J.
EXPECT_EQ(I.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 0));
EXPECT_EQ(J.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 1));
std::string temp;
const char* proxy_class_descriptor = proxy_class->GetDescriptor(&temp);
EXPECT_STREQ("L$Proxy1234;", proxy_class_descriptor);
EXPECT_EQ(nullptr, proxy_class->GetSourceFile());
}
// Creates a proxy class and check FieldHelper works correctly.
TEST_F(ProxyTest, ProxyFieldHelper) {
ScopedObjectAccess soa(Thread::Current());
jobject jclass_loader = LoadDex("Interfaces");
StackHandleScope<9> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
Handle<mirror::Class> I(hs.NewHandle(
class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
Handle<mirror::Class> J(hs.NewHandle(
class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
ASSERT_TRUE(I.Get() != nullptr);
ASSERT_TRUE(J.Get() != nullptr);
Handle<mirror::Class> proxyClass;
{
std::vector<mirror::Class*> interfaces;
interfaces.push_back(I.Get());
interfaces.push_back(J.Get());
proxyClass = hs.NewHandle(GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces));
}
ASSERT_TRUE(proxyClass.Get() != nullptr);
ASSERT_TRUE(proxyClass->IsProxyClass());
ASSERT_TRUE(proxyClass->IsInitialized());
EXPECT_TRUE(proxyClass->GetIFieldsPtr() == nullptr);
LengthPrefixedArray<ArtField>* static_fields = proxyClass->GetSFieldsPtr();
ASSERT_TRUE(static_fields != nullptr);
ASSERT_EQ(2u, proxyClass->NumStaticFields());
Handle<mirror::Class> interfacesFieldClass(
hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Class;")));
ASSERT_TRUE(interfacesFieldClass.Get() != nullptr);
Handle<mirror::Class> throwsFieldClass(
hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Class;")));
ASSERT_TRUE(throwsFieldClass.Get() != nullptr);
// Test "Class[] interfaces" field.
ArtField* field = &static_fields->At(0);
EXPECT_STREQ("interfaces", field->GetName());
EXPECT_STREQ("[Ljava/lang/Class;", field->GetTypeDescriptor());
EXPECT_EQ(interfacesFieldClass.Get(), field->GetType<true>());
std::string temp;
EXPECT_STREQ("L$Proxy1234;", field->GetDeclaringClass()->GetDescriptor(&temp));
EXPECT_FALSE(field->IsPrimitiveType());
// Test "Class[][] throws" field.
field = &static_fields->At(1);
EXPECT_STREQ("throws", field->GetName());
EXPECT_STREQ("[[Ljava/lang/Class;", field->GetTypeDescriptor());
EXPECT_EQ(throwsFieldClass.Get(), field->GetType<true>());
EXPECT_STREQ("L$Proxy1234;", field->GetDeclaringClass()->GetDescriptor(&temp));
EXPECT_FALSE(field->IsPrimitiveType());
}
// Creates two proxy classes and check the art/mirror fields of their static fields.
TEST_F(ProxyTest, CheckArtMirrorFieldsOfProxyStaticFields) {
ScopedObjectAccess soa(Thread::Current());
jobject jclass_loader = LoadDex("Interfaces");
StackHandleScope<7> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
Handle<mirror::Class> proxyClass0;
Handle<mirror::Class> proxyClass1;
{
std::vector<mirror::Class*> interfaces;
proxyClass0 = hs.NewHandle(GenerateProxyClass(soa, jclass_loader, "$Proxy0", interfaces));
proxyClass1 = hs.NewHandle(GenerateProxyClass(soa, jclass_loader, "$Proxy1", interfaces));
}
ASSERT_TRUE(proxyClass0.Get() != nullptr);
ASSERT_TRUE(proxyClass0->IsProxyClass());
ASSERT_TRUE(proxyClass0->IsInitialized());
ASSERT_TRUE(proxyClass1.Get() != nullptr);
ASSERT_TRUE(proxyClass1->IsProxyClass());
ASSERT_TRUE(proxyClass1->IsInitialized());
LengthPrefixedArray<ArtField>* static_fields0 = proxyClass0->GetSFieldsPtr();
ASSERT_TRUE(static_fields0 != nullptr);
ASSERT_EQ(2u, static_fields0->size());
LengthPrefixedArray<ArtField>* static_fields1 = proxyClass1->GetSFieldsPtr();
ASSERT_TRUE(static_fields1 != nullptr);
ASSERT_EQ(2u, static_fields1->size());
EXPECT_EQ(static_fields0->At(0).GetDeclaringClass(), proxyClass0.Get());
EXPECT_EQ(static_fields0->At(1).GetDeclaringClass(), proxyClass0.Get());
EXPECT_EQ(static_fields1->At(0).GetDeclaringClass(), proxyClass1.Get());
EXPECT_EQ(static_fields1->At(1).GetDeclaringClass(), proxyClass1.Get());
Handle<mirror::Field> field00 =
hs.NewHandle(mirror::Field::CreateFromArtField(soa.Self(), &static_fields0->At(0), true));
Handle<mirror::Field> field01 =
hs.NewHandle(mirror::Field::CreateFromArtField(soa.Self(), &static_fields0->At(1), true));
Handle<mirror::Field> field10 =
hs.NewHandle(mirror::Field::CreateFromArtField(soa.Self(), &static_fields1->At(0), true));
Handle<mirror::Field> field11 =
hs.NewHandle(mirror::Field::CreateFromArtField(soa.Self(), &static_fields1->At(1), true));
EXPECT_EQ(field00->GetArtField(), &static_fields0->At(0));
EXPECT_EQ(field01->GetArtField(), &static_fields0->At(1));
EXPECT_EQ(field10->GetArtField(), &static_fields1->At(0));
EXPECT_EQ(field11->GetArtField(), &static_fields1->At(1));
}
} // namespace art