/*
* 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 <assert.h>
#include <stdio.h>
#include <pthread.h>
#include <vector>
#include "jni.h"
#if defined(NDEBUG)
#error test code compiled without NDEBUG
#endif
static JavaVM* jvm = NULL;
extern "C" JNIEXPORT jint JNI_OnLoad(JavaVM *vm, void *) {
assert(vm != nullptr);
assert(jvm == nullptr);
jvm = vm;
return JNI_VERSION_1_6;
}
static void* AttachHelper(void* arg) {
assert(jvm != nullptr);
JNIEnv* env = nullptr;
JavaVMAttachArgs args = { JNI_VERSION_1_6, __FUNCTION__, NULL };
int attach_result = jvm->AttachCurrentThread(&env, &args);
assert(attach_result == 0);
typedef void (*Fn)(JNIEnv*);
Fn fn = reinterpret_cast<Fn>(arg);
fn(env);
int detach_result = jvm->DetachCurrentThread();
assert(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));
assert(pthread_create_result == 0);
int pthread_join_result = pthread_join(pthread, nullptr);
assert(pthread_join_result == 0);
}
static void testFindClassOnAttachedNativeThread(JNIEnv* env) {
jclass clazz = env->FindClass("Main");
assert(clazz != nullptr);
assert(!env->ExceptionCheck());
jobjectArray array = env->NewObjectArray(0, clazz, nullptr);
assert(array != nullptr);
assert(!env->ExceptionCheck());
}
// 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");
assert(clazz != nullptr);
assert(!env->ExceptionCheck());
jfieldID field = env->GetStaticFieldID(clazz, "testFindFieldOnAttachedNativeThreadField", "Z");
assert(field != nullptr);
assert(!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");
assert(clazz != nullptr);
assert(!env->ExceptionCheck());
jclass class_clazz = env->FindClass("java/lang/Class");
assert(class_clazz != nullptr);
assert(!env->ExceptionCheck());
jmethodID getFieldMetodId = env->GetMethodID(class_clazz, "getField",
"(Ljava/lang/String;)Ljava/lang/reflect/Field;");
assert(getFieldMetodId != nullptr);
assert(!env->ExceptionCheck());
jstring field_name = env->NewStringUTF("testReflectFieldGetFromAttachedNativeThreadField");
assert(field_name != nullptr);
assert(!env->ExceptionCheck());
jobject field = env->CallObjectMethod(clazz, getFieldMetodId, field_name);
assert(field != nullptr);
assert(!env->ExceptionCheck());
jclass field_clazz = env->FindClass("java/lang/reflect/Field");
assert(field_clazz != nullptr);
assert(!env->ExceptionCheck());
jmethodID getBooleanMetodId = env->GetMethodID(field_clazz, "getBoolean",
"(Ljava/lang/Object;)Z");
assert(getBooleanMetodId != nullptr);
assert(!env->ExceptionCheck());
jboolean value = env->CallBooleanMethod(field, getBooleanMetodId, /* ignored */ clazz);
assert(value == false);
assert(!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$testCallStaticVoidMethodOnSubClass_SuperClass");
assert(super_class != nullptr);
jmethodID execute = env->GetStaticMethodID(super_class, "execute", "()V");
assert(execute != nullptr);
jclass sub_class = env->FindClass("Main$testCallStaticVoidMethodOnSubClass_SubClass");
assert(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");
assert(abstract_class != nullptr);
jmethodID miranda_method = env->GetMethodID(abstract_class, "inInterface", "()Z");
assert(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);
assert(byte_buffer != nullptr);
assert(!env->ExceptionCheck());
assert(env->GetDirectBufferAddress(byte_buffer) == &buffer[0]);
assert(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* env, jclass klass, 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.
assert(b2 == 2);
assert(b3 == -3);
assert(b4 == 4);
assert(b5 == -5);
assert(b6 == 6);
assert(b7 == -7);
assert(b8 == 8);
assert(b9 == -9);
assert(b10 == 10);
assert(0 <= b1);
assert(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* env, jclass klass, 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.
assert(s2 == 2);
assert(s3 == -3);
assert(s4 == 4);
assert(s5 == -5);
assert(s6 == 6);
assert(s7 == -7);
assert(s8 == 8);
assert(s9 == -9);
assert(s10 == 10);
assert(0 <= s1);
assert(s1 < static_cast<jshort>(kShortReturnSize));
return short_returns[s1];
}
extern "C" jboolean JNICALL Java_Main_booleanMethod(JNIEnv* env, jclass klass, 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.
assert(b2 == JNI_TRUE);
assert(b3 == JNI_FALSE);
assert(b4 == JNI_TRUE);
assert(b5 == JNI_FALSE);
assert(b6 == JNI_TRUE);
assert(b7 == JNI_FALSE);
assert(b8 == JNI_TRUE);
assert(b9 == JNI_FALSE);
assert(b10 == JNI_TRUE);
assert(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* env, jclass klacc, 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.
assert(c2 == 'a');
assert(c3 == 'b');
assert(c4 == 'c');
assert(c5 == '0');
assert(c6 == '1');
assert(c7 == '2');
assert(c8 == 1234);
assert(c9 == 2345);
assert(c10 == 3456);
assert(c1 < static_cast<jchar>(kCharReturnSize));
return char_returns[c1];
}
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");
assert(vmstack_clazz != nullptr);
assert(!env->ExceptionCheck());
jmethodID getCallingClassLoaderMethodId = env->GetStaticMethodID(vmstack_clazz,
"getCallingClassLoader",
"()Ljava/lang/ClassLoader;");
assert(getCallingClassLoaderMethodId != nullptr);
assert(!env->ExceptionCheck());
jobject class_loader = env->CallStaticObjectMethod(vmstack_clazz,
getCallingClassLoaderMethodId);
assert(class_loader == nullptr);
assert(!env->ExceptionCheck());
}
// Test one-level call. Use System.loadLibrary().
{
jclass system_clazz = env->FindClass("java/lang/System");
assert(system_clazz != nullptr);
assert(!env->ExceptionCheck());
jmethodID loadLibraryMethodId = env->GetStaticMethodID(system_clazz, "loadLibrary",
"(Ljava/lang/String;)V");
assert(loadLibraryMethodId != nullptr);
assert(!env->ExceptionCheck());
// Create a string object.
jobject library_string = env->NewStringUTF("arttest");
assert(library_string != nullptr);
assert(!env->ExceptionCheck());
env->CallStaticVoidMethod(system_clazz, loadLibraryMethodId, library_string);
if (env->ExceptionCheck()) {
// At most 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);
assert(env->IsSameObject(unsatisfied_link_error_clazz, thrown_class));
}
}
}
// http://b/16867274
extern "C" JNIEXPORT void JNICALL Java_Main_nativeTestShallowGetCallingClassLoader(JNIEnv* env,
jclass) {
PthreadHelper(&testShallowGetCallingClassLoader);
}
static void testShallowGetStackClass2(JNIEnv* env) {
jclass vmstack_clazz = env->FindClass("dalvik/system/VMStack");
assert(vmstack_clazz != nullptr);
assert(!env->ExceptionCheck());
// Test direct call.
{
jmethodID getStackClass2MethodId = env->GetStaticMethodID(vmstack_clazz, "getStackClass2",
"()Ljava/lang/Class;");
assert(getStackClass2MethodId != nullptr);
assert(!env->ExceptionCheck());
jobject caller_class = env->CallStaticObjectMethod(vmstack_clazz, getStackClass2MethodId);
assert(caller_class == nullptr);
assert(!env->ExceptionCheck());
}
// Test one-level call. Use VMStack.getStackClass1().
{
jmethodID getStackClass1MethodId = env->GetStaticMethodID(vmstack_clazz, "getStackClass1",
"()Ljava/lang/Class;");
assert(getStackClass1MethodId != nullptr);
assert(!env->ExceptionCheck());
jobject caller_class = env->CallStaticObjectMethod(vmstack_clazz, getStackClass1MethodId);
assert(caller_class == nullptr);
assert(!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* env, jclass) {
PthreadHelper(&testShallowGetStackClass2);
}