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android13/art/test/004-JniTest/jni_test.cc

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/*
* Copyright (C) 2013 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 <pthread.h>
#include <cstdio>
#include <iostream>
#include <vector>
#include <android-base/logging.h>
#include "art_method-inl.h"
#include "base/runtime_debug.h"
#include "jni.h"
namespace art {
static JavaVM* jvm = nullptr;
static jint Java_Main_intFastNativeMethod(JNIEnv*, jclass, jint a, jint b, jint c);
static jint Java_Main_intCriticalNativeMethod(jint a, jint b, jint c);
static JNINativeMethod sMainMethods[] = {
{"intFastNativeMethod", "(III)I", reinterpret_cast<void*>(Java_Main_intFastNativeMethod) },
{"intCriticalNativeMethod", "(III)I", reinterpret_cast<void*>(Java_Main_intCriticalNativeMethod) },
};
extern "C" JNIEXPORT jint JNI_OnLoad(JavaVM *vm, void*) {
CHECK(vm != nullptr);
CHECK(jvm == nullptr);
jvm = vm;
std::cout << "JNI_OnLoad called" << std::endl;
return JNI_VERSION_1_6;
}
extern "C" JNIEXPORT void JNI_OnUnload(JavaVM*, void*) {
// std::cout since LOG(INFO) adds extra stuff like pid.
std::cout << "JNI_OnUnload called" << std::endl;
// Clear jvm for CHECK in test 004-JniTest.
jvm = nullptr;
}
static void* AttachHelper(void* arg) {
CHECK(jvm != nullptr);
JNIEnv* env = nullptr;
JavaVMAttachArgs args = { JNI_VERSION_1_6, __FUNCTION__, nullptr };
int attach_result = jvm->AttachCurrentThread(&env, &args);
CHECK_EQ(attach_result, 0);
using Fn = void(*)(JNIEnv*);
Fn fn = reinterpret_cast<Fn>(arg);
fn(env);
int detach_result = jvm->DetachCurrentThread();
CHECK_EQ(detach_result, 0);
return nullptr;
}
static void PthreadHelper(void (*fn)(JNIEnv*)) {
pthread_t pthread;
int pthread_create_result = pthread_create(&pthread, nullptr, AttachHelper,
reinterpret_cast<void*>(fn));
CHECK_EQ(pthread_create_result, 0);
int pthread_join_result = pthread_join(pthread, nullptr);
CHECK_EQ(pthread_join_result, 0);
}
static void testFindClassOnAttachedNativeThread(JNIEnv* env) {
jclass clazz = env->FindClass("Main");
CHECK(clazz != nullptr);
CHECK(!env->ExceptionCheck());
jobjectArray array = env->NewObjectArray(0, clazz, nullptr);
CHECK(array != nullptr);
CHECK(!env->ExceptionCheck());
}
extern "C" JNIEXPORT void JNICALL Java_Main_testUTFRegion(JNIEnv* env, jclass, jstring null_str) {
jstring foo_str = env->NewStringUTF("FOOBAR");
jstring emoji_str = env->NewStringUTF("SKI ⛷ SKI");
char buf[1024];
memset(buf, 'Y', sizeof(buf));
buf[1023] = '\0';
env->GetStringUTFRegion(foo_str, 3, 1, buf);
buf[1023] = '\0';
CHECK_EQ(strcmp("B", buf), 0) << buf;
// Null char on 0 len region
env->GetStringUTFRegion(foo_str, 3, 0, buf);
buf[1023] = '\0';
CHECK_EQ(strcmp("", buf), 0) << buf;
// No SEGV
env->GetStringUTFRegion(foo_str, 3, 0, nullptr);
env->GetStringUTFRegion(null_str, 1, 1, buf);
buf[1023] = '\0';
std::array<uint8_t, 3> nullbuf{ 0xc0, 0x80, 0x00 };
CHECK_EQ(memcmp(nullbuf.data(), buf, 3), 0);
env->GetStringUTFRegion(emoji_str, 1, 6, buf);
buf[1023] = '\0';
CHECK_EQ(strcmp("KI ⛷ S", buf), 0);
}
extern "C" JNIEXPORT jint JNICALL Java_Main_getFieldSubclass(JNIEnv* env,
jclass,
jobject f_obj,
jclass sub) {
jfieldID f = env->FromReflectedField(f_obj);
return env->GetStaticIntField(sub, f);
}
// http://b/10994325
extern "C" JNIEXPORT void JNICALL Java_Main_testFindClassOnAttachedNativeThread(JNIEnv*, jclass) {
PthreadHelper(&testFindClassOnAttachedNativeThread);
}
static void testFindFieldOnAttachedNativeThread(JNIEnv* env) {
jclass clazz = env->FindClass("Main");
CHECK(clazz != nullptr);
CHECK(!env->ExceptionCheck());
jfieldID field = env->GetStaticFieldID(clazz, "testFindFieldOnAttachedNativeThreadField", "Z");
CHECK(field != nullptr);
CHECK(!env->ExceptionCheck());
env->SetStaticBooleanField(clazz, field, JNI_TRUE);
}
extern "C" JNIEXPORT void JNICALL Java_Main_testFindFieldOnAttachedNativeThreadNative(JNIEnv*,
jclass) {
PthreadHelper(&testFindFieldOnAttachedNativeThread);
}
static void testReflectFieldGetFromAttachedNativeThread(JNIEnv* env) {
jclass clazz = env->FindClass("Main");
CHECK(clazz != nullptr);
CHECK(!env->ExceptionCheck());
jclass class_clazz = env->FindClass("java/lang/Class");
CHECK(class_clazz != nullptr);
CHECK(!env->ExceptionCheck());
jmethodID getFieldMetodId = env->GetMethodID(class_clazz, "getField",
"(Ljava/lang/String;)Ljava/lang/reflect/Field;");
CHECK(getFieldMetodId != nullptr);
CHECK(!env->ExceptionCheck());
jstring field_name = env->NewStringUTF("testReflectFieldGetFromAttachedNativeThreadField");
CHECK(field_name != nullptr);
CHECK(!env->ExceptionCheck());
jobject field = env->CallObjectMethod(clazz, getFieldMetodId, field_name);
CHECK(field != nullptr);
CHECK(!env->ExceptionCheck());
jclass field_clazz = env->FindClass("java/lang/reflect/Field");
CHECK(field_clazz != nullptr);
CHECK(!env->ExceptionCheck());
jmethodID getBooleanMetodId = env->GetMethodID(field_clazz, "getBoolean",
"(Ljava/lang/Object;)Z");
CHECK(getBooleanMetodId != nullptr);
CHECK(!env->ExceptionCheck());
jboolean value = env->CallBooleanMethod(field, getBooleanMetodId, /* ignored */ clazz);
CHECK(value == false);
CHECK(!env->ExceptionCheck());
}
// http://b/15539150
extern "C" JNIEXPORT void JNICALL Java_Main_testReflectFieldGetFromAttachedNativeThreadNative(
JNIEnv*, jclass) {
PthreadHelper(&testReflectFieldGetFromAttachedNativeThread);
}
// http://b/11243757
extern "C" JNIEXPORT void JNICALL Java_Main_testCallStaticVoidMethodOnSubClassNative(JNIEnv* env,
jclass) {
jclass super_class = env->FindClass("Main$testCallStaticVoidMethodOnSubClass_SuperClass");
CHECK(super_class != nullptr);
jmethodID execute = env->GetStaticMethodID(super_class, "execute", "()V");
CHECK(execute != nullptr);
jclass sub_class = env->FindClass("Main$testCallStaticVoidMethodOnSubClass_SubClass");
CHECK(sub_class != nullptr);
env->CallStaticVoidMethod(sub_class, execute);
}
extern "C" JNIEXPORT jobject JNICALL Java_Main_testGetMirandaMethodNative(JNIEnv* env, jclass) {
jclass abstract_class = env->FindClass("Main$testGetMirandaMethod_MirandaAbstract");
CHECK(abstract_class != nullptr);
jmethodID miranda_method = env->GetMethodID(abstract_class, "inInterface", "()Z");
CHECK(miranda_method != nullptr);
return env->ToReflectedMethod(abstract_class, miranda_method, JNI_FALSE);
}
// https://code.google.com/p/android/issues/detail?id=63055
extern "C" void JNICALL Java_Main_testZeroLengthByteBuffers(JNIEnv* env, jclass) {
std::vector<uint8_t> buffer(1);
jobject byte_buffer = env->NewDirectByteBuffer(&buffer[0], 0);
CHECK(byte_buffer != nullptr);
CHECK(!env->ExceptionCheck());
CHECK_EQ(env->GetDirectBufferAddress(byte_buffer), &buffer[0]);
CHECK_EQ(env->GetDirectBufferCapacity(byte_buffer), 0);
}
constexpr size_t kByteReturnSize = 7;
jbyte byte_returns[kByteReturnSize] = { 0, 1, 2, 127, -1, -2, -128 };
extern "C" jbyte JNICALL Java_Main_byteMethod(JNIEnv*, jclass, jbyte b1, jbyte b2,
jbyte b3, jbyte b4, jbyte b5, jbyte b6,
jbyte b7, jbyte b8, jbyte b9, jbyte b10) {
// We use b1 to drive the output.
CHECK_EQ(b2, 2);
CHECK_EQ(b3, -3);
CHECK_EQ(b4, 4);
CHECK_EQ(b5, -5);
CHECK_EQ(b6, 6);
CHECK_EQ(b7, -7);
CHECK_EQ(b8, 8);
CHECK_EQ(b9, -9);
CHECK_EQ(b10, 10);
CHECK_LE(0, b1);
CHECK_LT(b1, static_cast<jbyte>(kByteReturnSize));
return byte_returns[b1];
}
constexpr size_t kShortReturnSize = 9;
jshort short_returns[kShortReturnSize] = { 0, 1, 2, 127, 32767, -1, -2, -128,
static_cast<jshort>(0x8000) };
// The weird static_cast is because short int is only guaranteed down to -32767, not Java's -32768.
extern "C" jshort JNICALL Java_Main_shortMethod(JNIEnv*, jclass, jshort s1, jshort s2,
jshort s3, jshort s4, jshort s5, jshort s6,
jshort s7, jshort s8, jshort s9, jshort s10) {
// We use s1 to drive the output.
CHECK_EQ(s2, 2);
CHECK_EQ(s3, -3);
CHECK_EQ(s4, 4);
CHECK_EQ(s5, -5);
CHECK_EQ(s6, 6);
CHECK_EQ(s7, -7);
CHECK_EQ(s8, 8);
CHECK_EQ(s9, -9);
CHECK_EQ(s10, 10);
CHECK_LE(0, s1);
CHECK_LT(s1, static_cast<jshort>(kShortReturnSize));
return short_returns[s1];
}
extern "C" jboolean JNICALL Java_Main_booleanMethod(JNIEnv*, jclass, jboolean b1,
jboolean b2, jboolean b3, jboolean b4,
jboolean b5, jboolean b6, jboolean b7,
jboolean b8, jboolean b9, jboolean b10) {
// We use b1 to drive the output.
CHECK_EQ(b2, JNI_TRUE);
CHECK_EQ(b3, JNI_FALSE);
CHECK_EQ(b4, JNI_TRUE);
CHECK_EQ(b5, JNI_FALSE);
CHECK_EQ(b6, JNI_TRUE);
CHECK_EQ(b7, JNI_FALSE);
CHECK_EQ(b8, JNI_TRUE);
CHECK_EQ(b9, JNI_FALSE);
CHECK_EQ(b10, JNI_TRUE);
CHECK(b1 == JNI_TRUE || b1 == JNI_FALSE);
return b1;
}
constexpr size_t kCharReturnSize = 8;
jchar char_returns[kCharReturnSize] = { 0, 1, 2, 127, 255, 256, 15000, 34000 };
extern "C" jchar JNICALL Java_Main_charMethod(JNIEnv*, jclass, jchar c1, jchar c2,
jchar c3, jchar c4, jchar c5, jchar c6, jchar c7,
jchar c8, jchar c9, jchar c10) {
// We use c1 to drive the output.
CHECK_EQ(c2, 'a');
CHECK_EQ(c3, 'b');
CHECK_EQ(c4, 'c');
CHECK_EQ(c5, '0');
CHECK_EQ(c6, '1');
CHECK_EQ(c7, '2');
CHECK_EQ(c8, 1234);
CHECK_EQ(c9, 2345);
CHECK_EQ(c10, 3456);
CHECK_LT(c1, static_cast<jchar>(kCharReturnSize));
return char_returns[c1];
}
extern "C" JNIEXPORT void JNICALL Java_Main_removeLocalObject(JNIEnv* env, jclass, jclass o) {
// Delete the arg to see if it crashes.
env->DeleteLocalRef(o);
}
extern "C" JNIEXPORT jboolean JNICALL Java_Main_nativeIsAssignableFrom(JNIEnv* env, jclass,
jclass from, jclass to) {
return env->IsAssignableFrom(from, to);
}
static void testShallowGetCallingClassLoader(JNIEnv* env) {
// Test direct call.
{
jclass vmstack_clazz = env->FindClass("dalvik/system/VMStack");
CHECK(vmstack_clazz != nullptr);
CHECK(!env->ExceptionCheck());
jmethodID getCallingClassLoaderMethodId = env->GetStaticMethodID(vmstack_clazz,
"getCallingClassLoader",
"()Ljava/lang/ClassLoader;");
CHECK(getCallingClassLoaderMethodId != nullptr);
CHECK(!env->ExceptionCheck());
jobject class_loader = env->CallStaticObjectMethod(vmstack_clazz,
getCallingClassLoaderMethodId);
CHECK(class_loader == nullptr);
CHECK(!env->ExceptionCheck());
}
// Test one-level call. Use System.loadLibrary().
{
jclass system_clazz = env->FindClass("java/lang/System");
CHECK(system_clazz != nullptr);
CHECK(!env->ExceptionCheck());
jmethodID loadLibraryMethodId = env->GetStaticMethodID(system_clazz, "loadLibrary",
"(Ljava/lang/String;)V");
CHECK(loadLibraryMethodId != nullptr);
CHECK(!env->ExceptionCheck());
// Create a string object.
jobject library_string = env->NewStringUTF("non_existing_library");
CHECK(library_string != nullptr);
CHECK(!env->ExceptionCheck());
env->CallStaticVoidMethod(system_clazz, loadLibraryMethodId, library_string);
CHECK(env->ExceptionCheck());
// We expect UnsatisfiedLinkError.
jthrowable thrown = env->ExceptionOccurred();
env->ExceptionClear();
jclass unsatisfied_link_error_clazz = env->FindClass("java/lang/UnsatisfiedLinkError");
jclass thrown_class = env->GetObjectClass(thrown);
CHECK(env->IsSameObject(unsatisfied_link_error_clazz, thrown_class));
}
}
// http://b/16867274
extern "C" JNIEXPORT void JNICALL Java_Main_nativeTestShallowGetCallingClassLoader(JNIEnv*,
jclass) {
PthreadHelper(&testShallowGetCallingClassLoader);
}
static void testShallowGetStackClass2(JNIEnv* env) {
jclass vmstack_clazz = env->FindClass("dalvik/system/VMStack");
CHECK(vmstack_clazz != nullptr);
CHECK(!env->ExceptionCheck());
// Test direct call.
{
jmethodID getStackClass2MethodId = env->GetStaticMethodID(vmstack_clazz, "getStackClass2",
"()Ljava/lang/Class;");
CHECK(getStackClass2MethodId != nullptr);
CHECK(!env->ExceptionCheck());
jobject caller_class = env->CallStaticObjectMethod(vmstack_clazz, getStackClass2MethodId);
CHECK(caller_class == nullptr);
CHECK(!env->ExceptionCheck());
}
// Test one-level call. Use VMStack.getStackClass1().
{
jmethodID getStackClass1MethodId = env->GetStaticMethodID(vmstack_clazz, "getStackClass1",
"()Ljava/lang/Class;");
CHECK(getStackClass1MethodId != nullptr);
CHECK(!env->ExceptionCheck());
jobject caller_class = env->CallStaticObjectMethod(vmstack_clazz, getStackClass1MethodId);
CHECK(caller_class == nullptr);
CHECK(!env->ExceptionCheck());
}
// For better testing we would need to compile against libcore and have a two-deep stack
// ourselves.
}
extern "C" JNIEXPORT void JNICALL Java_Main_nativeTestShallowGetStackClass2(JNIEnv*, jclass) {
PthreadHelper(&testShallowGetStackClass2);
}
class JniCallNonvirtualVoidMethodTest {
public:
explicit JniCallNonvirtualVoidMethodTest(JNIEnv* env)
: env_(env),
check_jni_ri_(true),
check_jni_android_(true),
super_(GetClass("JniCallNonvirtualTest")),
sub_(GetClass("JniCallNonvirtualTestSubclass")),
super_constructor_(GetMethodID(super_, true, "<init>")),
super_static_(GetMethodID(super_, false, "staticMethod")),
super_nonstatic_(GetMethodID(super_, true, "nonstaticMethod")),
sub_constructor_(GetMethodID(sub_, true, "<init>")),
sub_static_(GetMethodID(sub_, false, "staticMethod")),
sub_nonstatic_(GetMethodID(sub_, true, "nonstaticMethod")),
super_field_(GetFieldID(super_, "nonstaticMethodSuperCalled")),
sub_field_(GetFieldID(super_, "nonstaticMethodSubCalled")) {}
void Test() {
TestStaticCallNonvirtualMethod();
TestNewObject();
TestnonstaticCallNonvirtualMethod();
}
JNIEnv* const env_;
bool const check_jni_ri_;
bool const check_jni_android_;
jclass const super_;
jclass const sub_;
jmethodID const super_constructor_;
jmethodID const super_static_;
jmethodID const super_nonstatic_;
jmethodID const sub_constructor_;
jmethodID const sub_static_;
jmethodID const sub_nonstatic_;
jfieldID const super_field_;
jfieldID const sub_field_;
private:
jclass GetClass(const char* class_name) {
jclass c = env_->FindClass(class_name);
if (env_->ExceptionCheck()) {
env_->ExceptionDescribe();
env_->FatalError(__FUNCTION__);
}
CHECK(!env_->ExceptionCheck());
CHECK(c != nullptr);
return c;
}
jmethodID GetMethodID(jclass c, bool nonstatic, const char* method_name) {
jmethodID m = ((nonstatic) ?
env_->GetMethodID(c, method_name, "()V") :
env_->GetStaticMethodID(c, method_name, "()V"));
if (env_->ExceptionCheck()) {
env_->ExceptionDescribe();
env_->FatalError(__FUNCTION__);
}
CHECK(m != nullptr);
return m;
}
jobject CallConstructor(jclass c, jmethodID m) {
jobject o = env_->NewObject(c, m);
if (env_->ExceptionCheck()) {
env_->ExceptionDescribe();
env_->FatalError(__FUNCTION__);
}
CHECK(o != nullptr);
return o;
}
void CallMethod(jobject o, jclass c, jmethodID m, bool nonstatic, const char* test_case) {
printf("RUNNING %s\n", test_case);
env_->CallNonvirtualVoidMethod(o, c, m);
bool exception_check = env_->ExceptionCheck();
if (c == nullptr || !nonstatic) {
if (!exception_check) {
printf("FAILED %s due to missing exception\n", test_case);
env_->FatalError("Expected NullPointerException with null jclass");
}
env_->ExceptionClear();
} else if (exception_check) {
printf("FAILED %s due to pending exception\n", test_case);
env_->ExceptionDescribe();
env_->FatalError(test_case);
}
printf("PASSED %s\n", test_case);
}
jfieldID GetFieldID(jclass c, const char* field_name) {
jfieldID m = env_->GetFieldID(c, field_name, "Z");
if (env_->ExceptionCheck()) {
env_->ExceptionDescribe();
env_->FatalError(__FUNCTION__);
}
CHECK(m != nullptr);
return m;
}
jboolean GetBooleanField(jobject o, jfieldID f) {
jboolean b = env_->GetBooleanField(o, f);
if (env_->ExceptionCheck()) {
env_->ExceptionDescribe();
env_->FatalError(__FUNCTION__);
}
return b;
}
void TestStaticCallNonvirtualMethod() {
if (!check_jni_ri_&& !check_jni_android_) {
CallMethod(nullptr, nullptr, super_static_, false, "null object, null class, super static");
}
if (!check_jni_android_) {
CallMethod(nullptr, super_, super_static_, false, "null object, super class, super static");
}
if (!check_jni_android_) {
CallMethod(nullptr, sub_, super_static_, false, "null object, sub class, super static");
}
if (!check_jni_ri_ && !check_jni_android_) {
CallMethod(nullptr, nullptr, sub_static_, false, "null object, null class, sub static");
}
if (!check_jni_android_) {
CallMethod(nullptr, sub_, sub_static_, false, "null object, super class, sub static");
}
if (!check_jni_android_) {
CallMethod(nullptr, super_, sub_static_, false, "null object, super class, sub static");
}
}
void TestNewObject() {
jobject super_super = CallConstructor(super_, super_constructor_);
jobject super_sub = CallConstructor(super_, sub_constructor_);
jobject sub_super = CallConstructor(sub_, super_constructor_);
jobject sub_sub = CallConstructor(sub_, sub_constructor_);
CHECK(env_->IsInstanceOf(super_super, super_));
CHECK(!env_->IsInstanceOf(super_super, sub_));
// Note that even though we called (and ran) the subclass
// constructor, we are not the subclass.
CHECK(env_->IsInstanceOf(super_sub, super_));
CHECK(!env_->IsInstanceOf(super_sub, sub_));
// Note that even though we called the superclass constructor, we
// are still the subclass.
CHECK(env_->IsInstanceOf(sub_super, super_));
CHECK(env_->IsInstanceOf(sub_super, sub_));
CHECK(env_->IsInstanceOf(sub_sub, super_));
CHECK(env_->IsInstanceOf(sub_sub, sub_));
}
void TestnonstaticCallNonvirtualMethod(bool super_object, bool super_class, bool super_method, const char* test_case) {
if (check_jni_android_) {
if (super_object && !super_method) {
return; // We don't allow a call with sub class method on the super class instance.
}
if (super_class && !super_method) {
return; // We don't allow a call with the sub class method with the super class argument.
}
}
jobject o = ((super_object) ?
CallConstructor(super_, super_constructor_) :
CallConstructor(sub_, sub_constructor_));
jclass c = (super_class) ? super_ : sub_;
jmethodID m = (super_method) ? super_nonstatic_ : sub_nonstatic_;
CallMethod(o, c, m, true, test_case);
jboolean super_field = GetBooleanField(o, super_field_);
jboolean sub_field = GetBooleanField(o, sub_field_);
CHECK_EQ(super_field, super_method);
CHECK_NE(sub_field, super_method);
}
void TestnonstaticCallNonvirtualMethod() {
TestnonstaticCallNonvirtualMethod(true, true, true, "super object, super class, super nonstatic");
TestnonstaticCallNonvirtualMethod(true, false, true, "super object, sub class, super nonstatic");
TestnonstaticCallNonvirtualMethod(true, false, false, "super object, sub class, sub nonstatic");
TestnonstaticCallNonvirtualMethod(true, true, false, "super object, super class, sub nonstatic");
TestnonstaticCallNonvirtualMethod(false, true, true, "sub object, super class, super nonstatic");
TestnonstaticCallNonvirtualMethod(false, false, true, "sub object, sub class, super nonstatic");
TestnonstaticCallNonvirtualMethod(false, false, false, "sub object, sub class, sub nonstatic");
TestnonstaticCallNonvirtualMethod(false, true, false, "sub object, super class, sub nonstatic");
}
};
extern "C" void JNICALL Java_Main_testCallNonvirtual(JNIEnv* env, jclass) {
JniCallNonvirtualVoidMethodTest(env).Test();
}
extern "C" JNIEXPORT void JNICALL Java_Main_testNewStringObject(JNIEnv* env, jclass) {
jclass c = env->FindClass("java/lang/String");
CHECK(c != nullptr);
jmethodID mid1 = env->GetMethodID(c, "<init>", "()V");
CHECK(mid1 != nullptr);
CHECK(!env->ExceptionCheck());
jmethodID mid2 = env->GetMethodID(c, "<init>", "([B)V");
CHECK(mid2 != nullptr);
CHECK(!env->ExceptionCheck());
jmethodID mid3 = env->GetMethodID(c, "<init>", "([C)V");
CHECK(mid3 != nullptr);
CHECK(!env->ExceptionCheck());
jmethodID mid4 = env->GetMethodID(c, "<init>", "(Ljava/lang/String;)V");
CHECK(mid4 != nullptr);
CHECK(!env->ExceptionCheck());
const char* test_array = "Test";
int byte_array_length = strlen(test_array);
jbyteArray byte_array = env->NewByteArray(byte_array_length);
env->SetByteArrayRegion(byte_array, 0, byte_array_length, reinterpret_cast<const jbyte*>(test_array));
// Test NewObject
jstring s = reinterpret_cast<jstring>(env->NewObject(c, mid2, byte_array));
CHECK(s != nullptr);
CHECK_EQ(env->GetStringLength(s), byte_array_length);
CHECK_EQ(env->GetStringUTFLength(s), byte_array_length);
const char* chars = env->GetStringUTFChars(s, nullptr);
CHECK_EQ(strcmp(test_array, chars), 0);
env->ReleaseStringUTFChars(s, chars);
// Test AllocObject and Call(Nonvirtual)VoidMethod
jstring s1 = reinterpret_cast<jstring>(env->AllocObject(c));
CHECK(s1 != nullptr);
jstring s2 = reinterpret_cast<jstring>(env->AllocObject(c));
CHECK(s2 != nullptr);
jstring s3 = reinterpret_cast<jstring>(env->AllocObject(c));
CHECK(s3 != nullptr);
jstring s4 = reinterpret_cast<jstring>(env->AllocObject(c));
CHECK(s4 != nullptr);
jcharArray char_array = env->NewCharArray(5);
jstring string_arg = env->NewStringUTF("helloworld");
// With Var Args
env->CallVoidMethod(s1, mid1);
env->CallNonvirtualVoidMethod(s2, c, mid2, byte_array);
// With JValues
jvalue args3[1];
args3[0].l = char_array;
jvalue args4[1];
args4[0].l = string_arg;
env->CallVoidMethodA(s3, mid3, args3);
env->CallNonvirtualVoidMethodA(s4, c, mid4, args4);
// Test with global and weak global references
jstring s5 = reinterpret_cast<jstring>(env->AllocObject(c));
CHECK(s5 != nullptr);
s5 = reinterpret_cast<jstring>(env->NewGlobalRef(s5));
jstring s6 = reinterpret_cast<jstring>(env->AllocObject(c));
CHECK(s6 != nullptr);
s6 = reinterpret_cast<jstring>(env->NewWeakGlobalRef(s6));
env->CallVoidMethod(s5, mid1);
env->CallNonvirtualVoidMethod(s6, c, mid2, byte_array);
CHECK_EQ(env->GetStringLength(s5), 0);
CHECK_EQ(env->GetStringLength(s6), byte_array_length);
const char* chars6 = env->GetStringUTFChars(s6, nullptr);
CHECK_EQ(strcmp(test_array, chars6), 0);
env->ReleaseStringUTFChars(s6, chars6);
}
extern "C" JNIEXPORT jlong JNICALL Java_Main_testGetMethodID(JNIEnv* env, jclass, jclass c) {
return reinterpret_cast<jlong>(env->GetMethodID(c, "a", "()V"));
}
extern "C" JNIEXPORT void JNICALL Java_Main_enterJniCriticalSection(JNIEnv* env, jclass,
jint arraySize,
jbyteArray array0,
jbyteArray array1) {
for (int i = 0; i < 50000; ++i) {
char* data0 = reinterpret_cast<char*>(env->GetPrimitiveArrayCritical(array0, nullptr));
char* data1 = reinterpret_cast<char*>(env->GetPrimitiveArrayCritical(array1, nullptr));
bool up = i % 2 == 0;
for (int j = 0; j < arraySize; ++j) {
if (up) {
data1[j] = data0[j] + 1;
} else {
data0[j] = data1[j] + 1;
}
}
env->ReleasePrimitiveArrayCritical(array1, data1, 0);
env->ReleasePrimitiveArrayCritical(array0, data0, 0);
}
}
class JniCallDefaultMethodsTest {
public:
explicit JniCallDefaultMethodsTest(JNIEnv* env)
: env_(env), concrete_class_(env_->FindClass("ConcreteClass")) {
CHECK(!env_->ExceptionCheck());
CHECK(concrete_class_ != nullptr);
}
void Test() {
TestCalls("ConcreteClass", { "JniCallNonOverridenDefaultMethod",
"JniCallOverridenDefaultMethod",
"JniCallOverridenDefaultMethodWithSuper",
"JniCallOverridenAbstractMethod",
"JniCallConflictDefaultMethod",
"JniCallSoftConflictMethod" });
TestCalls("DefaultInterface", { "JniCallNonOverridenDefaultMethod",
"JniCallOverridenDefaultMethod",
"JniCallOverridenAbstractMethod",
"JniCallConflictDefaultMethod",
"JniCallSoftConflictMethod" });
TestCalls("AbstractInterface", { "JniCallSoftConflictMethod" });
TestCalls("ConflictInterface", { "JniCallConflictDefaultMethod" });
}
private:
void TestCalls(const char* declaring_class, const std::vector<const char*>& methods) {
jmethodID new_method = env_->GetMethodID(concrete_class_, "<init>", "()V");
jobject obj = env_->NewObject(concrete_class_, new_method);
CHECK(!env_->ExceptionCheck());
CHECK(obj != nullptr);
jclass decl_class = env_->FindClass(declaring_class);
CHECK(!env_->ExceptionCheck());
CHECK(decl_class != nullptr);
for (const char* method : methods) {
jmethodID method_id = env_->GetMethodID(decl_class, method, "()V");
CHECK(!env_->ExceptionCheck());
printf("Calling method %s->%s on object of type ConcreteClass\n", declaring_class, method);
env_->CallVoidMethod(obj, method_id);
if (env_->ExceptionCheck()) {
jthrowable thrown = env_->ExceptionOccurred();
env_->ExceptionClear();
jmethodID to_string = env_->GetMethodID(
env_->FindClass("java/lang/Object"), "toString", "()Ljava/lang/String;");
jstring exception_string = (jstring) env_->CallObjectMethod(thrown, to_string);
CHECK(!env_->ExceptionCheck());
const char* exception_string_utf8 = env_->GetStringUTFChars(exception_string, nullptr);
CHECK(!env_->ExceptionCheck());
CHECK(exception_string_utf8 != nullptr);
printf("EXCEPTION OCCURED: %s\n", exception_string_utf8);
env_->ReleaseStringUTFChars(exception_string, exception_string_utf8);
}
}
}
JNIEnv* env_;
jclass concrete_class_;
};
extern "C" JNIEXPORT void JNICALL Java_Main_testCallDefaultMethods(JNIEnv* env) {
JniCallDefaultMethodsTest(env).Test();
}
static void InvokeSpecificMethod(JNIEnv* env, jobject obj, const char* method) {
jclass lambda_class = env->FindClass("LambdaInterface");
CHECK(!env->ExceptionCheck());
CHECK(lambda_class != nullptr);
jmethodID method_id = env->GetMethodID(lambda_class, method, "()V");
CHECK(!env->ExceptionCheck());
env->CallVoidMethod(obj, method_id);
CHECK(!env->ExceptionCheck());
}
extern "C" JNIEXPORT void JNICALL Java_Main_testInvokeLambdaDefaultMethod(
JNIEnv* e, jclass, jobject l) {
InvokeSpecificMethod(e, l, "sayHiTwice");
}
extern "C" JNIEXPORT void JNICALL Java_Main_testInvokeLambdaMethod(JNIEnv* e, jclass, jobject l) {
InvokeSpecificMethod(e, l, "sayHi");
}
// Register on-demand because many tests share this JNI library and
// we can't unconditionally register them.
extern "C" JNIEXPORT jboolean JNICALL Java_Main_registerNativesJniTest(JNIEnv* e, jclass kls) {
const size_t numMethods = sizeof(sMainMethods)/sizeof(JNINativeMethod);
if (e->RegisterNatives(kls, sMainMethods, numMethods) < 0) {
std::cerr << "RegisterNatives failed for 'Main'" << std::endl;
return JNI_FALSE;
}
return JNI_TRUE;
}
// Annotated with @FastNative in Java code. Doesn't need to be explicitly registered with "!".
// NOTE: Has to be registered explicitly to avoid mutator lock check failures.
static jint Java_Main_intFastNativeMethod(JNIEnv*, jclass, jint a, jint b, jint c) {
return a + b + c;
}
// Annotated with @CriticalNative in Java code. Doesn't need to be explicitly registered with "!".
// NOTE: Has to be registered explicitly to avoid mutator lock check failures.
static jint Java_Main_intCriticalNativeMethod(jint a, jint b, jint c) {
// Note that unlike a "Fast Native" method this excludes JNIEnv and the jclass parameters.
return a + b + c;
}
extern "C" JNIEXPORT jobject JNICALL Java_Main_lookupClinit(JNIEnv* env, jclass, jclass kls) {
jmethodID clinit_id = env->GetStaticMethodID(kls, "<clinit>", "()V");
if (clinit_id != nullptr) {
jobject obj = env->ToReflectedMethod(kls, clinit_id, /*isStatic*/ true);
CHECK(obj != nullptr);
return obj;
} else {
return nullptr;
}
}
extern "C" JNIEXPORT jboolean JNICALL Java_Main_isSlowDebug(JNIEnv*, jclass) {
// Return whether slow-debug is on. Only relevant for debug builds.
if (kIsDebugBuild) {
// Register a fake flag and get the default value it should be initialized with.
static bool fake_flag = false;
fake_flag = RegisterRuntimeDebugFlag(&fake_flag);
return fake_flag ? JNI_TRUE : JNI_FALSE;
}
// To pass the Java-side test, just so "on" for release builds.
return JNI_TRUE;
}
} // namespace art
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