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/*
* 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.
*/
#include "jni_internal.h"
#include "common_compiler_test.h"
#include "mirror/art_method-inl.h"
#include "mirror/string-inl.h"
#include "scoped_thread_state_change.h"
#include "ScopedLocalRef.h"
namespace art {
// TODO: Convert to CommonRuntimeTest. Currently MakeExecutable is used.
class JniInternalTest : public CommonCompilerTest {
protected:
virtual void SetUp() {
CommonCompilerTest::SetUp();
vm_ = Runtime::Current()->GetJavaVM();
// Turn on -verbose:jni for the JNI tests.
// gLogVerbosity.jni = true;
vm_->AttachCurrentThread(&env_, nullptr);
ScopedLocalRef<jclass> aioobe(env_,
env_->FindClass("java/lang/ArrayIndexOutOfBoundsException"));
CHECK(aioobe.get() != nullptr);
aioobe_ = reinterpret_cast<jclass>(env_->NewGlobalRef(aioobe.get()));
ScopedLocalRef<jclass> ase(env_, env_->FindClass("java/lang/ArrayStoreException"));
CHECK(ase.get() != nullptr);
ase_ = reinterpret_cast<jclass>(env_->NewGlobalRef(ase.get()));
ScopedLocalRef<jclass> sioobe(env_,
env_->FindClass("java/lang/StringIndexOutOfBoundsException"));
CHECK(sioobe.get() != nullptr);
sioobe_ = reinterpret_cast<jclass>(env_->NewGlobalRef(sioobe.get()));
}
void ExpectException(jclass exception_class) {
EXPECT_TRUE(env_->ExceptionCheck());
jthrowable exception = env_->ExceptionOccurred();
EXPECT_NE(nullptr, exception);
env_->ExceptionClear();
EXPECT_TRUE(env_->IsInstanceOf(exception, exception_class));
}
void ExpectClassFound(const char* name) {
EXPECT_NE(env_->FindClass(name), nullptr) << name;
EXPECT_FALSE(env_->ExceptionCheck()) << name;
}
void ExpectClassNotFound(const char* name) {
EXPECT_EQ(env_->FindClass(name), nullptr) << name;
EXPECT_TRUE(env_->ExceptionCheck()) << name;
env_->ExceptionClear();
}
void CleanUpJniEnv() {
if (aioobe_ != nullptr) {
env_->DeleteGlobalRef(aioobe_);
aioobe_ = nullptr;
}
if (ase_ != nullptr) {
env_->DeleteGlobalRef(ase_);
ase_ = nullptr;
}
if (sioobe_ != nullptr) {
env_->DeleteGlobalRef(sioobe_);
sioobe_ = nullptr;
}
}
virtual void TearDown() OVERRIDE {
CleanUpJniEnv();
CommonCompilerTest::TearDown();
}
jclass GetPrimitiveClass(char descriptor) {
ScopedObjectAccess soa(env_);
mirror::Class* c = class_linker_->FindPrimitiveClass(descriptor);
CHECK(c != nullptr);
return soa.AddLocalReference<jclass>(c);
}
JavaVMExt* vm_;
JNIEnv* env_;
jclass aioobe_;
jclass ase_;
jclass sioobe_;
};
TEST_F(JniInternalTest, AllocObject) {
jclass c = env_->FindClass("java/lang/String");
ASSERT_NE(c, nullptr);
jobject o = env_->AllocObject(c);
ASSERT_NE(o, nullptr);
// We have an instance of the class we asked for...
ASSERT_TRUE(env_->IsInstanceOf(o, c));
// ...whose fields haven't been initialized because
// we didn't call a constructor.
ASSERT_EQ(0, env_->GetIntField(o, env_->GetFieldID(c, "count", "I")));
ASSERT_EQ(0, env_->GetIntField(o, env_->GetFieldID(c, "offset", "I")));
ASSERT_TRUE(env_->GetObjectField(o, env_->GetFieldID(c, "value", "[C")) == nullptr);
}
TEST_F(JniInternalTest, GetVersion) {
ASSERT_EQ(JNI_VERSION_1_6, env_->GetVersion());
}
TEST_F(JniInternalTest, FindClass) {
// Reference types...
ExpectClassFound("java/lang/String");
// ...for arrays too, where you must include "L;".
ExpectClassFound("[Ljava/lang/String;");
// Primitive arrays are okay too, if the primitive type is valid.
ExpectClassFound("[C");
{
CheckJniAbortCatcher check_jni_abort_catcher;
env_->FindClass(nullptr);
check_jni_abort_catcher.Check("name == null");
// We support . as well as / for compatibility, if -Xcheck:jni is off.
ExpectClassFound("java.lang.String");
check_jni_abort_catcher.Check("illegal class name 'java.lang.String'");
ExpectClassNotFound("Ljava.lang.String;");
check_jni_abort_catcher.Check("illegal class name 'Ljava.lang.String;'");
ExpectClassFound("[Ljava.lang.String;");
check_jni_abort_catcher.Check("illegal class name '[Ljava.lang.String;'");
ExpectClassNotFound("[java.lang.String");
check_jni_abort_catcher.Check("illegal class name '[java.lang.String'");
// You can't include the "L;" in a JNI class descriptor.
ExpectClassNotFound("Ljava/lang/String;");
check_jni_abort_catcher.Check("illegal class name 'Ljava/lang/String;'");
// But you must include it for an array of any reference type.
ExpectClassNotFound("[java/lang/String");
check_jni_abort_catcher.Check("illegal class name '[java/lang/String'");
ExpectClassNotFound("[K");
check_jni_abort_catcher.Check("illegal class name '[K'");
// Void arrays aren't allowed.
ExpectClassNotFound("[V");
check_jni_abort_catcher.Check("illegal class name '[V'");
}
// But primitive types aren't allowed...
ExpectClassNotFound("C");
ExpectClassNotFound("V");
ExpectClassNotFound("K");
}
TEST_F(JniInternalTest, GetFieldID) {
jclass jlnsfe = env_->FindClass("java/lang/NoSuchFieldError");
ASSERT_NE(jlnsfe, nullptr);
jclass c = env_->FindClass("java/lang/String");
ASSERT_NE(c, nullptr);
// Wrong type.
jfieldID fid = env_->GetFieldID(c, "count", "J");
EXPECT_EQ(nullptr, fid);
ExpectException(jlnsfe);
// Wrong type where type doesn't exist.
fid = env_->GetFieldID(c, "count", "Lrod/jane/freddy;");
EXPECT_EQ(nullptr, fid);
ExpectException(jlnsfe);
// Wrong name.
fid = env_->GetFieldID(c, "Count", "I");
EXPECT_EQ(nullptr, fid);
ExpectException(jlnsfe);
// Good declared field lookup.
fid = env_->GetFieldID(c, "count", "I");
EXPECT_NE(nullptr, fid);
EXPECT_FALSE(env_->ExceptionCheck());
// Good superclass field lookup.
c = env_->FindClass("java/lang/StringBuilder");
fid = env_->GetFieldID(c, "count", "I");
EXPECT_NE(nullptr, fid);
EXPECT_NE(fid, nullptr);
EXPECT_FALSE(env_->ExceptionCheck());
// Not instance.
fid = env_->GetFieldID(c, "CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
EXPECT_EQ(nullptr, fid);
ExpectException(jlnsfe);
// Bad arguments.
CheckJniAbortCatcher check_jni_abort_catcher;
fid = env_->GetFieldID(nullptr, "count", "I");
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check("java_class == null");
fid = env_->GetFieldID(c, nullptr, "I");
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check("name == null");
fid = env_->GetFieldID(c, "count", nullptr);
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check("sig == null");
}
TEST_F(JniInternalTest, GetStaticFieldID) {
jclass jlnsfe = env_->FindClass("java/lang/NoSuchFieldError");
ASSERT_NE(jlnsfe, nullptr);
jclass c = env_->FindClass("java/lang/String");
ASSERT_NE(c, nullptr);
// Wrong type.
jfieldID fid = env_->GetStaticFieldID(c, "CASE_INSENSITIVE_ORDER", "J");
EXPECT_EQ(nullptr, fid);
ExpectException(jlnsfe);
// Wrong type where type doesn't exist.
fid = env_->GetStaticFieldID(c, "CASE_INSENSITIVE_ORDER", "Lrod/jane/freddy;");
EXPECT_EQ(nullptr, fid);
ExpectException(jlnsfe);
// Wrong name.
fid = env_->GetStaticFieldID(c, "cASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
EXPECT_EQ(nullptr, fid);
ExpectException(jlnsfe);
// Good declared field lookup.
fid = env_->GetStaticFieldID(c, "CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
EXPECT_NE(nullptr, fid);
EXPECT_NE(fid, nullptr);
EXPECT_FALSE(env_->ExceptionCheck());
// Not static.
fid = env_->GetStaticFieldID(c, "count", "I");
EXPECT_EQ(nullptr, fid);
ExpectException(jlnsfe);
// Bad arguments.
CheckJniAbortCatcher check_jni_abort_catcher;
fid = env_->GetStaticFieldID(nullptr, "CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check("java_class == null");
fid = env_->GetStaticFieldID(c, nullptr, "Ljava/util/Comparator;");
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check("name == null");
fid = env_->GetStaticFieldID(c, "CASE_INSENSITIVE_ORDER", nullptr);
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check("sig == null");
}
TEST_F(JniInternalTest, GetMethodID) {
jclass jlobject = env_->FindClass("java/lang/Object");
jclass jlstring = env_->FindClass("java/lang/String");
jclass jlnsme = env_->FindClass("java/lang/NoSuchMethodError");
jclass jncrbc = env_->FindClass("java/nio/channels/ReadableByteChannel");
// Sanity check that no exceptions are pending.
ASSERT_FALSE(env_->ExceptionCheck());
// Check that java.lang.Object.foo() doesn't exist and NoSuchMethodError is
// a pending exception.
jmethodID method = env_->GetMethodID(jlobject, "foo", "()V");
EXPECT_EQ(nullptr, method);
ExpectException(jlnsme);
// Check that java.lang.Object.equals() does exist.
method = env_->GetMethodID(jlobject, "equals", "(Ljava/lang/Object;)Z");
EXPECT_NE(nullptr, method);
EXPECT_FALSE(env_->ExceptionCheck());
// Check that GetMethodID for java.lang.String.valueOf(int) fails as the
// method is static.
method = env_->GetMethodID(jlstring, "valueOf", "(I)Ljava/lang/String;");
EXPECT_EQ(nullptr, method);
ExpectException(jlnsme);
// Check that GetMethodID for java.lang.NoSuchMethodError.<init>(String) finds the constructor.
method = env_->GetMethodID(jlnsme, "<init>", "(Ljava/lang/String;)V");
EXPECT_NE(nullptr, method);
EXPECT_FALSE(env_->ExceptionCheck());
// Check that GetMethodID can find a interface method inherited from another interface.
method = env_->GetMethodID(jncrbc, "close", "()V");
EXPECT_NE(nullptr, method);
EXPECT_FALSE(env_->ExceptionCheck());
// Bad arguments.
CheckJniAbortCatcher check_jni_abort_catcher;
method = env_->GetMethodID(nullptr, "<init>", "(Ljava/lang/String;)V");
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check("java_class == null");
method = env_->GetMethodID(jlnsme, nullptr, "(Ljava/lang/String;)V");
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check("name == null");
method = env_->GetMethodID(jlnsme, "<init>", nullptr);
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check("sig == null");
}
TEST_F(JniInternalTest, GetStaticMethodID) {
jclass jlobject = env_->FindClass("java/lang/Object");
jclass jlnsme = env_->FindClass("java/lang/NoSuchMethodError");
// Sanity check that no exceptions are pending
ASSERT_FALSE(env_->ExceptionCheck());
// Check that java.lang.Object.foo() doesn't exist and NoSuchMethodError is
// a pending exception
jmethodID method = env_->GetStaticMethodID(jlobject, "foo", "()V");
EXPECT_EQ(nullptr, method);
ExpectException(jlnsme);
// Check that GetStaticMethodID for java.lang.Object.equals(Object) fails as
// the method is not static
method = env_->GetStaticMethodID(jlobject, "equals", "(Ljava/lang/Object;)Z");
EXPECT_EQ(nullptr, method);
ExpectException(jlnsme);
// Check that java.lang.String.valueOf(int) does exist
jclass jlstring = env_->FindClass("java/lang/String");
method = env_->GetStaticMethodID(jlstring, "valueOf", "(I)Ljava/lang/String;");
EXPECT_NE(nullptr, method);
EXPECT_FALSE(env_->ExceptionCheck());
// Bad arguments.
CheckJniAbortCatcher check_jni_abort_catcher;
method = env_->GetStaticMethodID(nullptr, "valueOf", "(I)Ljava/lang/String;");
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check("java_class == null");
method = env_->GetStaticMethodID(jlstring, nullptr, "(I)Ljava/lang/String;");
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check("name == null");
method = env_->GetStaticMethodID(jlstring, "valueOf", nullptr);
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check("sig == null");
}
TEST_F(JniInternalTest, FromReflectedField_ToReflectedField) {
jclass jlrField = env_->FindClass("java/lang/reflect/Field");
jclass c = env_->FindClass("java/lang/String");
ASSERT_NE(c, nullptr);
jfieldID fid = env_->GetFieldID(c, "count", "I");
ASSERT_NE(fid, nullptr);
// Turn the fid into a java.lang.reflect.Field...
jobject field = env_->ToReflectedField(c, fid, JNI_FALSE);
ASSERT_NE(c, nullptr);
ASSERT_TRUE(env_->IsInstanceOf(field, jlrField));
// ...and back again.
jfieldID fid2 = env_->FromReflectedField(field);
ASSERT_NE(fid2, nullptr);
// Make sure we can actually use it.
jstring s = env_->NewStringUTF("poop");
ASSERT_EQ(4, env_->GetIntField(s, fid2));
// Bad arguments.
CheckJniAbortCatcher check_jni_abort_catcher;
field = env_->ToReflectedField(c, nullptr, JNI_FALSE);
EXPECT_EQ(field, nullptr);
check_jni_abort_catcher.Check("fid == null");
fid2 = env_->FromReflectedField(nullptr);
ASSERT_EQ(fid2, nullptr);
check_jni_abort_catcher.Check("jlr_field == null");
}
TEST_F(JniInternalTest, FromReflectedMethod_ToReflectedMethod) {
jclass jlrMethod = env_->FindClass("java/lang/reflect/Method");
ASSERT_NE(jlrMethod, nullptr);
jclass jlrConstructor = env_->FindClass("java/lang/reflect/Constructor");
ASSERT_NE(jlrConstructor, nullptr);
jclass c = env_->FindClass("java/lang/String");
ASSERT_NE(c, nullptr);
jmethodID mid = env_->GetMethodID(c, "<init>", "()V");
ASSERT_NE(mid, nullptr);
// Turn the mid into a java.lang.reflect.Constructor...
jobject method = env_->ToReflectedMethod(c, mid, JNI_FALSE);
ASSERT_NE(method, nullptr);
ASSERT_TRUE(env_->IsInstanceOf(method, jlrConstructor));
// ...and back again.
jmethodID mid2 = env_->FromReflectedMethod(method);
ASSERT_NE(mid2, nullptr);
// Make sure we can actually use it.
jstring s = reinterpret_cast<jstring>(env_->AllocObject(c));
ASSERT_NE(s, nullptr);
env_->CallVoidMethod(s, mid2);
ASSERT_EQ(JNI_FALSE, env_->ExceptionCheck());
mid = env_->GetMethodID(c, "length", "()I");
ASSERT_NE(mid, nullptr);
// Turn the mid into a java.lang.reflect.Method...
method = env_->ToReflectedMethod(c, mid, JNI_FALSE);
ASSERT_NE(method, nullptr);
ASSERT_TRUE(env_->IsInstanceOf(method, jlrMethod));
// ...and back again.
mid2 = env_->FromReflectedMethod(method);
ASSERT_NE(mid2, nullptr);
// Make sure we can actually use it.
s = env_->NewStringUTF("poop");
ASSERT_NE(s, nullptr);
ASSERT_EQ(4, env_->CallIntMethod(s, mid2));
// Bad arguments.
CheckJniAbortCatcher check_jni_abort_catcher;
method = env_->ToReflectedMethod(c, nullptr, JNI_FALSE);
EXPECT_EQ(method, nullptr);
check_jni_abort_catcher.Check("mid == null");
mid2 = env_->FromReflectedMethod(method);
ASSERT_EQ(mid2, nullptr);
check_jni_abort_catcher.Check("jlr_method == null");
}
static void BogusMethod() {
// You can't pass nullptr function pointers to RegisterNatives.
}
TEST_F(JniInternalTest, RegisterAndUnregisterNatives) {
jclass jlobject = env_->FindClass("java/lang/Object");
jclass jlnsme = env_->FindClass("java/lang/NoSuchMethodError");
void* native_function = reinterpret_cast<void*>(BogusMethod);
// Sanity check that no exceptions are pending.
ASSERT_FALSE(env_->ExceptionCheck());
// Check that registering method without name causes a NoSuchMethodError.
{
JNINativeMethod methods[] = { { nullptr, "()V", native_function } };
EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_ERR);
}
ExpectException(jlnsme);
// Check that registering method without signature causes a NoSuchMethodError.
{
JNINativeMethod methods[] = { { "notify", nullptr, native_function } };
EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_ERR);
}
ExpectException(jlnsme);
// Check that registering method without function causes a NoSuchMethodError.
{
JNINativeMethod methods[] = { { "notify", "()V", nullptr } };
EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_ERR);
}
ExpectException(jlnsme);
// Check that registering to a non-existent java.lang.Object.foo() causes a NoSuchMethodError.
{
JNINativeMethod methods[] = { { "foo", "()V", native_function } };
EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_ERR);
}
ExpectException(jlnsme);
// Check that registering non-native methods causes a NoSuchMethodError.
{
JNINativeMethod methods[] = { { "equals", "(Ljava/lang/Object;)Z", native_function } };
EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_ERR);
}
ExpectException(jlnsme);
// Check that registering native methods is successful.
{
JNINativeMethod methods[] = { { "notify", "()V", native_function } };
EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_OK);
}
EXPECT_FALSE(env_->ExceptionCheck());
EXPECT_EQ(env_->UnregisterNatives(jlobject), JNI_OK);
// Check that registering no methods isn't a failure.
{
JNINativeMethod methods[] = { };
EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 0), JNI_OK);
}
EXPECT_FALSE(env_->ExceptionCheck());
EXPECT_EQ(env_->UnregisterNatives(jlobject), JNI_OK);
// Check that registering a -ve number of methods is a failure.
CheckJniAbortCatcher check_jni_abort_catcher;
for (int i = -10; i < 0; ++i) {
JNINativeMethod methods[] = { };
EXPECT_EQ(env_->RegisterNatives(jlobject, methods, i), JNI_ERR);
check_jni_abort_catcher.Check("negative method count: ");
}
EXPECT_FALSE(env_->ExceptionCheck());
// Passing a class of null is a failure.
{
JNINativeMethod methods[] = { };
EXPECT_EQ(env_->RegisterNatives(nullptr, methods, 0), JNI_ERR);
check_jni_abort_catcher.Check("java_class == null");
}
// Passing methods as null is a failure.
EXPECT_EQ(env_->RegisterNatives(jlobject, nullptr, 1), JNI_ERR);
check_jni_abort_catcher.Check("methods == null");
// Unregisters null is a failure.
EXPECT_EQ(env_->UnregisterNatives(nullptr), JNI_ERR);
check_jni_abort_catcher.Check("java_class == null");
// Unregistering a class with no natives is a warning.
EXPECT_EQ(env_->UnregisterNatives(jlnsme), JNI_OK);
}
#define EXPECT_PRIMITIVE_ARRAY(new_fn, \
get_region_fn, \
set_region_fn, \
get_elements_fn, \
release_elements_fn, \
scalar_type, \
expected_class_descriptor) \
jsize size = 4; \
\
{ \
CheckJniAbortCatcher jni_abort_catcher; \
/* Allocate an negative sized array and check it has the right failure type. */ \
EXPECT_EQ(env_->new_fn(-1), nullptr); \
jni_abort_catcher.Check("negative array length: -1"); \
EXPECT_EQ(env_->new_fn(std::numeric_limits<jint>::min()), nullptr); \
jni_abort_catcher.Check("negative array length: -2147483648"); \
/* Pass the array as null. */ \
EXPECT_EQ(0, env_->GetArrayLength(nullptr)); \
jni_abort_catcher.Check("java_array == null"); \
env_->get_region_fn(nullptr, 0, 0, nullptr); \
jni_abort_catcher.Check("java_array == null"); \
env_->set_region_fn(nullptr, 0, 0, nullptr); \
jni_abort_catcher.Check("java_array == null"); \
env_->get_elements_fn(nullptr, nullptr); \
jni_abort_catcher.Check("java_array == null"); \
env_->release_elements_fn(nullptr, nullptr, 0); \
jni_abort_catcher.Check("java_array == null"); \
/* Pass the elements for region as null. */ \
scalar_type ## Array a = env_->new_fn(size); \
env_->get_region_fn(a, 0, size, nullptr); \
jni_abort_catcher.Check("buf == null"); \
env_->set_region_fn(a, 0, size, nullptr); \
jni_abort_catcher.Check("buf == null"); \
} \
/* Allocate an array and check it has the right type and length. */ \
scalar_type ## Array a = env_->new_fn(size); \
EXPECT_NE(a, nullptr); \
EXPECT_TRUE(env_->IsInstanceOf(a, env_->FindClass(expected_class_descriptor))); \
EXPECT_EQ(size, env_->GetArrayLength(a)); \
\
/* GetPrimitiveArrayRegion/SetPrimitiveArrayRegion */ \
/* AIOOBE for negative start offset. */ \
env_->get_region_fn(a, -1, 1, nullptr); \
ExpectException(aioobe_); \
env_->set_region_fn(a, -1, 1, nullptr); \
ExpectException(aioobe_); \
\
/* AIOOBE for negative length. */ \
env_->get_region_fn(a, 0, -1, nullptr); \
ExpectException(aioobe_); \
env_->set_region_fn(a, 0, -1, nullptr); \
ExpectException(aioobe_); \
\
/* AIOOBE for buffer overrun. */ \
env_->get_region_fn(a, size - 1, size, nullptr); \
ExpectException(aioobe_); \
env_->set_region_fn(a, size - 1, size, nullptr); \
ExpectException(aioobe_); \
\
/* It's okay for the buffer to be nullptr as long as the length is 0. */ \
env_->get_region_fn(a, 2, 0, nullptr); \
/* Even if the offset is invalid... */ \
env_->get_region_fn(a, 123, 0, nullptr); \
ExpectException(aioobe_); \
\
/* It's okay for the buffer to be nullptr as long as the length is 0. */ \
env_->set_region_fn(a, 2, 0, nullptr); \
/* Even if the offset is invalid... */ \
env_->set_region_fn(a, 123, 0, nullptr); \
ExpectException(aioobe_); \
\
/* Prepare a couple of buffers. */ \
std::unique_ptr<scalar_type[]> src_buf(new scalar_type[size]); \
std::unique_ptr<scalar_type[]> dst_buf(new scalar_type[size]); \
for (jsize i = 0; i < size; ++i) { src_buf[i] = scalar_type(i); } \
for (jsize i = 0; i < size; ++i) { dst_buf[i] = scalar_type(-1); } \
\
/* Copy all of src_buf onto the heap. */ \
env_->set_region_fn(a, 0, size, &src_buf[0]); \
/* Copy back only part. */ \
env_->get_region_fn(a, 1, size - 2, &dst_buf[1]); \
EXPECT_NE(memcmp(&src_buf[0], &dst_buf[0], size * sizeof(scalar_type)), 0) \
<< "short copy equal"; \
/* Copy the missing pieces. */ \
env_->get_region_fn(a, 0, 1, &dst_buf[0]); \
env_->get_region_fn(a, size - 1, 1, &dst_buf[size - 1]); \
EXPECT_EQ(memcmp(&src_buf[0], &dst_buf[0], size * sizeof(scalar_type)), 0) \
<< "fixed copy not equal"; \
/* Copy back the whole array. */ \
env_->get_region_fn(a, 0, size, &dst_buf[0]); \
EXPECT_EQ(memcmp(&src_buf[0], &dst_buf[0], size * sizeof(scalar_type)), 0) \
<< "full copy not equal"; \
/* GetPrimitiveArrayCritical */ \
void* v = env_->GetPrimitiveArrayCritical(a, nullptr); \
EXPECT_EQ(memcmp(&src_buf[0], v, size * sizeof(scalar_type)), 0) \
<< "GetPrimitiveArrayCritical not equal"; \
env_->ReleasePrimitiveArrayCritical(a, v, 0); \
/* GetXArrayElements */ \
scalar_type* xs = env_->get_elements_fn(a, nullptr); \
EXPECT_EQ(memcmp(&src_buf[0], xs, size * sizeof(scalar_type)), 0) \
<< # get_elements_fn " not equal"; \
env_->release_elements_fn(a, xs, 0); \
TEST_F(JniInternalTest, BooleanArrays) {
EXPECT_PRIMITIVE_ARRAY(NewBooleanArray, GetBooleanArrayRegion, SetBooleanArrayRegion,
GetBooleanArrayElements, ReleaseBooleanArrayElements, jboolean, "[Z");
}
TEST_F(JniInternalTest, ByteArrays) {
EXPECT_PRIMITIVE_ARRAY(NewByteArray, GetByteArrayRegion, SetByteArrayRegion,
GetByteArrayElements, ReleaseByteArrayElements, jbyte, "[B");
}
TEST_F(JniInternalTest, CharArrays) {
EXPECT_PRIMITIVE_ARRAY(NewCharArray, GetCharArrayRegion, SetCharArrayRegion,
GetCharArrayElements, ReleaseCharArrayElements, jchar, "[C");
}
TEST_F(JniInternalTest, DoubleArrays) {
EXPECT_PRIMITIVE_ARRAY(NewDoubleArray, GetDoubleArrayRegion, SetDoubleArrayRegion,
GetDoubleArrayElements, ReleaseDoubleArrayElements, jdouble, "[D");
}
TEST_F(JniInternalTest, FloatArrays) {
EXPECT_PRIMITIVE_ARRAY(NewFloatArray, GetFloatArrayRegion, SetFloatArrayRegion,
GetFloatArrayElements, ReleaseFloatArrayElements, jfloat, "[F");
}
TEST_F(JniInternalTest, IntArrays) {
EXPECT_PRIMITIVE_ARRAY(NewIntArray, GetIntArrayRegion, SetIntArrayRegion,
GetIntArrayElements, ReleaseIntArrayElements, jint, "[I");
}
TEST_F(JniInternalTest, LongArrays) {
EXPECT_PRIMITIVE_ARRAY(NewLongArray, GetLongArrayRegion, SetLongArrayRegion,
GetLongArrayElements, ReleaseLongArrayElements, jlong, "[J");
}
TEST_F(JniInternalTest, ShortArrays) {
EXPECT_PRIMITIVE_ARRAY(NewShortArray, GetShortArrayRegion, SetShortArrayRegion,
GetShortArrayElements, ReleaseShortArrayElements, jshort, "[S");
}
TEST_F(JniInternalTest, GetPrimitiveArrayElementsOfWrongType) {
CheckJniAbortCatcher jni_abort_catcher;
jbooleanArray array = env_->NewBooleanArray(10);
jboolean is_copy;
EXPECT_EQ(env_->GetByteArrayElements(reinterpret_cast<jbyteArray>(array), &is_copy), nullptr);
jni_abort_catcher.Check(
"attempt to get byte primitive array elements with an object of type boolean[]");
EXPECT_EQ(env_->GetShortArrayElements(reinterpret_cast<jshortArray>(array), &is_copy), nullptr);
jni_abort_catcher.Check(
"attempt to get short primitive array elements with an object of type boolean[]");
EXPECT_EQ(env_->GetCharArrayElements(reinterpret_cast<jcharArray>(array), &is_copy), nullptr);
jni_abort_catcher.Check(
"attempt to get char primitive array elements with an object of type boolean[]");
EXPECT_EQ(env_->GetIntArrayElements(reinterpret_cast<jintArray>(array), &is_copy), nullptr);
jni_abort_catcher.Check(
"attempt to get int primitive array elements with an object of type boolean[]");
EXPECT_EQ(env_->GetLongArrayElements(reinterpret_cast<jlongArray>(array), &is_copy), nullptr);
jni_abort_catcher.Check(
"attempt to get long primitive array elements with an object of type boolean[]");
EXPECT_EQ(env_->GetFloatArrayElements(reinterpret_cast<jfloatArray>(array), &is_copy), nullptr);
jni_abort_catcher.Check(
"attempt to get float primitive array elements with an object of type boolean[]");
EXPECT_EQ(env_->GetDoubleArrayElements(reinterpret_cast<jdoubleArray>(array), &is_copy), nullptr);
jni_abort_catcher.Check(
"attempt to get double primitive array elements with an object of type boolean[]");
jbyteArray array2 = env_->NewByteArray(10);
EXPECT_EQ(env_->GetBooleanArrayElements(reinterpret_cast<jbooleanArray>(array2), &is_copy),
nullptr);
jni_abort_catcher.Check(
"attempt to get boolean primitive array elements with an object of type byte[]");
jobject object = env_->NewStringUTF("Test String");
EXPECT_EQ(env_->GetBooleanArrayElements(reinterpret_cast<jbooleanArray>(object), &is_copy),
nullptr);
jni_abort_catcher.Check(
"attempt to get boolean primitive array elements with an object of type java.lang.String");
}
TEST_F(JniInternalTest, ReleasePrimitiveArrayElementsOfWrongType) {
CheckJniAbortCatcher jni_abort_catcher;
jbooleanArray array = env_->NewBooleanArray(10);
ASSERT_TRUE(array != nullptr);
jboolean is_copy;
jboolean* elements = env_->GetBooleanArrayElements(array, &is_copy);
ASSERT_TRUE(elements != nullptr);
env_->ReleaseByteArrayElements(reinterpret_cast<jbyteArray>(array),
reinterpret_cast<jbyte*>(elements), 0);
jni_abort_catcher.Check(
"attempt to release byte primitive array elements with an object of type boolean[]");
env_->ReleaseShortArrayElements(reinterpret_cast<jshortArray>(array),
reinterpret_cast<jshort*>(elements), 0);
jni_abort_catcher.Check(
"attempt to release short primitive array elements with an object of type boolean[]");
env_->ReleaseCharArrayElements(reinterpret_cast<jcharArray>(array),
reinterpret_cast<jchar*>(elements), 0);
jni_abort_catcher.Check(
"attempt to release char primitive array elements with an object of type boolean[]");
env_->ReleaseIntArrayElements(reinterpret_cast<jintArray>(array),
reinterpret_cast<jint*>(elements), 0);
jni_abort_catcher.Check(
"attempt to release int primitive array elements with an object of type boolean[]");
env_->ReleaseLongArrayElements(reinterpret_cast<jlongArray>(array),
reinterpret_cast<jlong*>(elements), 0);
jni_abort_catcher.Check(
"attempt to release long primitive array elements with an object of type boolean[]");
env_->ReleaseFloatArrayElements(reinterpret_cast<jfloatArray>(array),
reinterpret_cast<jfloat*>(elements), 0);
jni_abort_catcher.Check(
"attempt to release float primitive array elements with an object of type boolean[]");
env_->ReleaseDoubleArrayElements(reinterpret_cast<jdoubleArray>(array),
reinterpret_cast<jdouble*>(elements), 0);
jni_abort_catcher.Check(
"attempt to release double primitive array elements with an object of type boolean[]");
jbyteArray array2 = env_->NewByteArray(10);
env_->ReleaseBooleanArrayElements(reinterpret_cast<jbooleanArray>(array2), elements, 0);
jni_abort_catcher.Check(
"attempt to release boolean primitive array elements with an object of type byte[]");
jobject object = env_->NewStringUTF("Test String");
env_->ReleaseBooleanArrayElements(reinterpret_cast<jbooleanArray>(object), elements, 0);
jni_abort_catcher.Check(
"attempt to release boolean primitive array elements with an object of type "
"java.lang.String");
}
TEST_F(JniInternalTest, GetReleasePrimitiveArrayCriticalOfWrongType) {
CheckJniAbortCatcher jni_abort_catcher;
jobject object = env_->NewStringUTF("Test String");
jboolean is_copy;
void* elements = env_->GetPrimitiveArrayCritical(reinterpret_cast<jarray>(object), &is_copy);
jni_abort_catcher.Check("expected primitive array, given java.lang.String");
env_->ReleasePrimitiveArrayCritical(reinterpret_cast<jarray>(object), elements, 0);
jni_abort_catcher.Check("expected primitive array, given java.lang.String");
}
TEST_F(JniInternalTest, GetPrimitiveArrayRegionElementsOfWrongType) {
CheckJniAbortCatcher jni_abort_catcher;
constexpr size_t kLength = 10;
jbooleanArray array = env_->NewBooleanArray(kLength);
ASSERT_TRUE(array != nullptr);
jboolean elements[kLength];
env_->GetByteArrayRegion(reinterpret_cast<jbyteArray>(array), 0, kLength,
reinterpret_cast<jbyte*>(elements));
jni_abort_catcher.Check(
"attempt to get region of byte primitive array elements with an object of type boolean[]");
env_->GetShortArrayRegion(reinterpret_cast<jshortArray>(array), 0, kLength,
reinterpret_cast<jshort*>(elements));
jni_abort_catcher.Check(
"attempt to get region of short primitive array elements with an object of type boolean[]");
env_->GetCharArrayRegion(reinterpret_cast<jcharArray>(array), 0, kLength,
reinterpret_cast<jchar*>(elements));
jni_abort_catcher.Check(
"attempt to get region of char primitive array elements with an object of type boolean[]");
env_->GetIntArrayRegion(reinterpret_cast<jintArray>(array), 0, kLength,
reinterpret_cast<jint*>(elements));
jni_abort_catcher.Check(
"attempt to get region of int primitive array elements with an object of type boolean[]");
env_->GetLongArrayRegion(reinterpret_cast<jlongArray>(array), 0, kLength,
reinterpret_cast<jlong*>(elements));
jni_abort_catcher.Check(
"attempt to get region of long primitive array elements with an object of type boolean[]");
env_->GetFloatArrayRegion(reinterpret_cast<jfloatArray>(array), 0, kLength,
reinterpret_cast<jfloat*>(elements));
jni_abort_catcher.Check(
"attempt to get region of float primitive array elements with an object of type boolean[]");
env_->GetDoubleArrayRegion(reinterpret_cast<jdoubleArray>(array), 0, kLength,
reinterpret_cast<jdouble*>(elements));
jni_abort_catcher.Check(
"attempt to get region of double primitive array elements with an object of type boolean[]");
jbyteArray array2 = env_->NewByteArray(10);
env_->GetBooleanArrayRegion(reinterpret_cast<jbooleanArray>(array2), 0, kLength,
reinterpret_cast<jboolean*>(elements));
jni_abort_catcher.Check(
"attempt to get region of boolean primitive array elements with an object of type byte[]");
jobject object = env_->NewStringUTF("Test String");
env_->GetBooleanArrayRegion(reinterpret_cast<jbooleanArray>(object), 0, kLength,
reinterpret_cast<jboolean*>(elements));
jni_abort_catcher.Check(
"attempt to get region of boolean primitive array elements with an object of type "
"java.lang.String");
}
TEST_F(JniInternalTest, SetPrimitiveArrayRegionElementsOfWrongType) {
CheckJniAbortCatcher jni_abort_catcher;
constexpr size_t kLength = 10;
jbooleanArray array = env_->NewBooleanArray(kLength);
ASSERT_TRUE(array != nullptr);
jboolean elements[kLength];
env_->SetByteArrayRegion(reinterpret_cast<jbyteArray>(array), 0, kLength,
reinterpret_cast<jbyte*>(elements));
jni_abort_catcher.Check(
"attempt to set region of byte primitive array elements with an object of type boolean[]");
env_->SetShortArrayRegion(reinterpret_cast<jshortArray>(array), 0, kLength,
reinterpret_cast<jshort*>(elements));
jni_abort_catcher.Check(
"attempt to set region of short primitive array elements with an object of type boolean[]");
env_->SetCharArrayRegion(reinterpret_cast<jcharArray>(array), 0, kLength,
reinterpret_cast<jchar*>(elements));
jni_abort_catcher.Check(
"attempt to set region of char primitive array elements with an object of type boolean[]");
env_->SetIntArrayRegion(reinterpret_cast<jintArray>(array), 0, kLength,
reinterpret_cast<jint*>(elements));
jni_abort_catcher.Check(
"attempt to set region of int primitive array elements with an object of type boolean[]");
env_->SetLongArrayRegion(reinterpret_cast<jlongArray>(array), 0, kLength,
reinterpret_cast<jlong*>(elements));
jni_abort_catcher.Check(
"attempt to set region of long primitive array elements with an object of type boolean[]");
env_->SetFloatArrayRegion(reinterpret_cast<jfloatArray>(array), 0, kLength,
reinterpret_cast<jfloat*>(elements));
jni_abort_catcher.Check(
"attempt to set region of float primitive array elements with an object of type boolean[]");
env_->SetDoubleArrayRegion(reinterpret_cast<jdoubleArray>(array), 0, kLength,
reinterpret_cast<jdouble*>(elements));
jni_abort_catcher.Check(
"attempt to set region of double primitive array elements with an object of type boolean[]");
jbyteArray array2 = env_->NewByteArray(10);
env_->SetBooleanArrayRegion(reinterpret_cast<jbooleanArray>(array2), 0, kLength,
reinterpret_cast<jboolean*>(elements));
jni_abort_catcher.Check(
"attempt to set region of boolean primitive array elements with an object of type byte[]");
jobject object = env_->NewStringUTF("Test String");
env_->SetBooleanArrayRegion(reinterpret_cast<jbooleanArray>(object), 0, kLength,
reinterpret_cast<jboolean*>(elements));
jni_abort_catcher.Check(
"attempt to set region of boolean primitive array elements with an object of type "
"java.lang.String");
}
TEST_F(JniInternalTest, NewObjectArray) {
jclass element_class = env_->FindClass("java/lang/String");
ASSERT_NE(element_class, nullptr);
jclass array_class = env_->FindClass("[Ljava/lang/String;");
ASSERT_NE(array_class, nullptr);
jobjectArray a = env_->NewObjectArray(0, element_class, nullptr);
EXPECT_NE(a, nullptr);
EXPECT_TRUE(env_->IsInstanceOf(a, array_class));
EXPECT_EQ(0, env_->GetArrayLength(a));
a = env_->NewObjectArray(1, element_class, nullptr);
EXPECT_NE(a, nullptr);
EXPECT_TRUE(env_->IsInstanceOf(a, array_class));
EXPECT_EQ(1, env_->GetArrayLength(a));
EXPECT_TRUE(env_->IsSameObject(env_->GetObjectArrayElement(a, 0), nullptr));
// Negative array length checks.
CheckJniAbortCatcher jni_abort_catcher;
env_->NewObjectArray(-1, element_class, nullptr);
jni_abort_catcher.Check("negative array length: -1");
env_->NewObjectArray(std::numeric_limits<jint>::min(), element_class, nullptr);
jni_abort_catcher.Check("negative array length: -2147483648");
}
TEST_F(JniInternalTest, NewObjectArrayWithPrimitiveClasses) {
const char* primitive_descriptors = "VZBSCIJFD";
const char* primitive_names[] = {
"void", "boolean", "byte", "short", "char", "int", "long", "float", "double"
};
ASSERT_EQ(strlen(primitive_descriptors), arraysize(primitive_names));
CheckJniAbortCatcher jni_abort_catcher;
for (size_t i = 0; i < strlen(primitive_descriptors); ++i) {
env_->NewObjectArray(0, nullptr, nullptr);
jni_abort_catcher.Check("element_jclass == null");
jclass primitive_class = GetPrimitiveClass(primitive_descriptors[i]);
env_->NewObjectArray(1, primitive_class, nullptr);
std::string error_msg(StringPrintf("not an object type: %s", primitive_names[i]));
jni_abort_catcher.Check(error_msg.c_str());
}
}
TEST_F(JniInternalTest, NewObjectArrayWithInitialValue) {
jclass element_class = env_->FindClass("java/lang/String");
ASSERT_NE(element_class, nullptr);
jclass array_class = env_->FindClass("[Ljava/lang/String;");
ASSERT_NE(array_class, nullptr);
jstring s = env_->NewStringUTF("poop");
jobjectArray a = env_->NewObjectArray(2, element_class, s);
EXPECT_NE(a, nullptr);
EXPECT_TRUE(env_->IsInstanceOf(a, array_class));
EXPECT_EQ(2, env_->GetArrayLength(a));
EXPECT_TRUE(env_->IsSameObject(env_->GetObjectArrayElement(a, 0), s));
EXPECT_TRUE(env_->IsSameObject(env_->GetObjectArrayElement(a, 1), s));
// Attempt to incorrect create an array of strings with initial value of string arrays.
CheckJniAbortCatcher jni_abort_catcher;
env_->NewObjectArray(2, element_class, a);
jni_abort_catcher.Check("cannot assign object of type 'java.lang.String[]' to array with element "
"type of 'java.lang.String'");
}
TEST_F(JniInternalTest, GetArrayLength) {
// Already tested in NewObjectArray/NewPrimitiveArray.
}
TEST_F(JniInternalTest, GetObjectClass) {
jclass string_class = env_->FindClass("java/lang/String");
ASSERT_NE(string_class, nullptr);
jclass class_class = env_->FindClass("java/lang/Class");
ASSERT_NE(class_class, nullptr);
jstring s = env_->NewStringUTF("poop");
jclass c = env_->GetObjectClass(s);
ASSERT_TRUE(env_->IsSameObject(string_class, c));
jclass c2 = env_->GetObjectClass(c);
ASSERT_TRUE(env_->IsSameObject(class_class, env_->GetObjectClass(c2)));
// Null as object should fail.
CheckJniAbortCatcher jni_abort_catcher;
EXPECT_EQ(env_->GetObjectClass(nullptr), nullptr);
jni_abort_catcher.Check("java_object == null");
}
TEST_F(JniInternalTest, GetSuperclass) {
jclass object_class = env_->FindClass("java/lang/Object");
ASSERT_NE(object_class, nullptr);
jclass string_class = env_->FindClass("java/lang/String");
ASSERT_NE(string_class, nullptr);
jclass runnable_interface = env_->FindClass("java/lang/Runnable");
ASSERT_NE(runnable_interface, nullptr);
ASSERT_TRUE(env_->IsSameObject(object_class, env_->GetSuperclass(string_class)));
ASSERT_EQ(env_->GetSuperclass(object_class), nullptr);
ASSERT_TRUE(env_->IsSameObject(object_class, env_->GetSuperclass(runnable_interface)));
// Null as class should fail.
CheckJniAbortCatcher jni_abort_catcher;
EXPECT_EQ(env_->GetSuperclass(nullptr), nullptr);
jni_abort_catcher.Check("java_class == null");
}
TEST_F(JniInternalTest, IsAssignableFrom) {
jclass object_class = env_->FindClass("java/lang/Object");
ASSERT_NE(object_class, nullptr);
jclass string_class = env_->FindClass("java/lang/String");
ASSERT_NE(string_class, nullptr);
// A superclass is assignable from an instance of its
// subclass but not vice versa.
ASSERT_TRUE(env_->IsAssignableFrom(string_class, object_class));
ASSERT_FALSE(env_->IsAssignableFrom(object_class, string_class));
jclass charsequence_interface = env_->FindClass("java/lang/CharSequence");
ASSERT_NE(charsequence_interface, nullptr);
// An interface is assignable from an instance of an implementing
// class but not vice versa.
ASSERT_TRUE(env_->IsAssignableFrom(string_class, charsequence_interface));
ASSERT_FALSE(env_->IsAssignableFrom(charsequence_interface, string_class));
// Check that arrays are covariant.
jclass string_array_class = env_->FindClass("[Ljava/lang/String;");
ASSERT_NE(string_array_class, nullptr);
jclass object_array_class = env_->FindClass("[Ljava/lang/Object;");
ASSERT_NE(object_array_class, nullptr);
ASSERT_TRUE(env_->IsAssignableFrom(string_array_class, object_array_class));
ASSERT_FALSE(env_->IsAssignableFrom(object_array_class, string_array_class));
// Primitive types are tested in 004-JniTest.
// Null as either class should fail.
CheckJniAbortCatcher jni_abort_catcher;
EXPECT_EQ(env_->IsAssignableFrom(nullptr, string_class), JNI_FALSE);
jni_abort_catcher.Check("java_class1 == null");
EXPECT_EQ(env_->IsAssignableFrom(object_class, nullptr), JNI_FALSE);
jni_abort_catcher.Check("java_class2 == null");
}
TEST_F(JniInternalTest, GetObjectRefType) {
jclass local = env_->FindClass("java/lang/Object");
ASSERT_TRUE(local != nullptr);
EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(local));
jobject global = env_->NewGlobalRef(local);
EXPECT_EQ(JNIGlobalRefType, env_->GetObjectRefType(global));
jweak weak_global = env_->NewWeakGlobalRef(local);
EXPECT_EQ(JNIWeakGlobalRefType, env_->GetObjectRefType(weak_global));
jobject invalid = reinterpret_cast<jobject>(this);
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(invalid));
// TODO: invoke a native method and test that its arguments are considered local references.
// Null as object should fail.
CheckJniAbortCatcher jni_abort_catcher;
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(nullptr));
jni_abort_catcher.Check("java_object == null");
}
TEST_F(JniInternalTest, StaleWeakGlobal) {
jclass java_lang_Class = env_->FindClass("java/lang/Class");
ASSERT_NE(java_lang_Class, nullptr);
jobjectArray local_ref = env_->NewObjectArray(1, java_lang_Class, nullptr);
ASSERT_NE(local_ref, nullptr);
jweak weak_global = env_->NewWeakGlobalRef(local_ref);
ASSERT_NE(weak_global, nullptr);
env_->DeleteLocalRef(local_ref);
Runtime::Current()->GetHeap()->CollectGarbage(false); // GC should clear the weak global.
jobject new_global_ref = env_->NewGlobalRef(weak_global);
EXPECT_EQ(new_global_ref, nullptr);
jobject new_local_ref = env_->NewLocalRef(weak_global);
EXPECT_EQ(new_local_ref, nullptr);
}
TEST_F(JniInternalTest, NewStringUTF) {
EXPECT_EQ(env_->NewStringUTF(nullptr), nullptr);
jstring s;
s = env_->NewStringUTF("");
EXPECT_NE(s, nullptr);
EXPECT_EQ(0, env_->GetStringLength(s));
EXPECT_EQ(0, env_->GetStringUTFLength(s));
s = env_->NewStringUTF("hello");
EXPECT_NE(s, nullptr);
EXPECT_EQ(5, env_->GetStringLength(s));
EXPECT_EQ(5, env_->GetStringUTFLength(s));
// TODO: check some non-ASCII strings.
}
TEST_F(JniInternalTest, NewString) {
jchar chars[] = { 'h', 'i' };
jstring s;
s = env_->NewString(chars, 0);
EXPECT_NE(s, nullptr);
EXPECT_EQ(0, env_->GetStringLength(s));
EXPECT_EQ(0, env_->GetStringUTFLength(s));
s = env_->NewString(chars, 2);
EXPECT_NE(s, nullptr);
EXPECT_EQ(2, env_->GetStringLength(s));
EXPECT_EQ(2, env_->GetStringUTFLength(s));
// TODO: check some non-ASCII strings.
}
TEST_F(JniInternalTest, NewStringNullCharsZeroLength) {
jstring s = env_->NewString(nullptr, 0);
EXPECT_NE(s, nullptr);
EXPECT_EQ(0, env_->GetStringLength(s));
}
TEST_F(JniInternalTest, NewStringNullCharsNonzeroLength) {
CheckJniAbortCatcher jni_abort_catcher;
env_->NewString(nullptr, 1);
jni_abort_catcher.Check("chars == null && char_count > 0");
}
TEST_F(JniInternalTest, NewStringNegativeLength) {
CheckJniAbortCatcher jni_abort_catcher;
env_->NewString(nullptr, -1);
jni_abort_catcher.Check("char_count < 0: -1");
env_->NewString(nullptr, std::numeric_limits<jint>::min());
jni_abort_catcher.Check("char_count < 0: -2147483648");
}
TEST_F(JniInternalTest, GetStringLength_GetStringUTFLength) {
// Already tested in the NewString/NewStringUTF tests.
}
TEST_F(JniInternalTest, GetStringRegion_GetStringUTFRegion) {
jstring s = env_->NewStringUTF("hello");
ASSERT_TRUE(s != nullptr);
env_->GetStringRegion(s, -1, 0, nullptr);
ExpectException(sioobe_);
env_->GetStringRegion(s, 0, -1, nullptr);
ExpectException(sioobe_);
env_->GetStringRegion(s, 0, 10, nullptr);
ExpectException(sioobe_);
env_->GetStringRegion(s, 10, 1, nullptr);
ExpectException(sioobe_);
jchar chars[4] = { 'x', 'x', 'x', 'x' };
env_->GetStringRegion(s, 1, 2, &chars[1]);
EXPECT_EQ('x', chars[0]);
EXPECT_EQ('e', chars[1]);
EXPECT_EQ('l', chars[2]);
EXPECT_EQ('x', chars[3]);
// It's okay for the buffer to be nullptr as long as the length is 0.
env_->GetStringRegion(s, 2, 0, nullptr);
// Even if the offset is invalid...
env_->GetStringRegion(s, 123, 0, nullptr);
ExpectException(sioobe_);
env_->GetStringUTFRegion(s, -1, 0, nullptr);
ExpectException(sioobe_);
env_->GetStringUTFRegion(s, 0, -1, nullptr);
ExpectException(sioobe_);
env_->GetStringUTFRegion(s, 0, 10, nullptr);
ExpectException(sioobe_);
env_->GetStringUTFRegion(s, 10, 1, nullptr);
ExpectException(sioobe_);
char bytes[4] = { 'x', 'x', 'x', 'x' };
env_->GetStringUTFRegion(s, 1, 2, &bytes[1]);
EXPECT_EQ('x', bytes[0]);
EXPECT_EQ('e', bytes[1]);
EXPECT_EQ('l', bytes[2]);
EXPECT_EQ('x', bytes[3]);
// It's okay for the buffer to be nullptr as long as the length is 0.
env_->GetStringUTFRegion(s, 2, 0, nullptr);
// Even if the offset is invalid...
env_->GetStringUTFRegion(s, 123, 0, nullptr);
ExpectException(sioobe_);
}
TEST_F(JniInternalTest, GetStringUTFChars_ReleaseStringUTFChars) {
// Passing in a nullptr jstring is ignored normally, but caught by -Xcheck:jni.
{
CheckJniAbortCatcher check_jni_abort_catcher;
EXPECT_EQ(env_->GetStringUTFChars(nullptr, nullptr), nullptr);
check_jni_abort_catcher.Check("GetStringUTFChars received null jstring");
}
jstring s = env_->NewStringUTF("hello");
ASSERT_TRUE(s != nullptr);
const char* utf = env_->GetStringUTFChars(s, nullptr);
EXPECT_STREQ("hello", utf);
env_->ReleaseStringUTFChars(s, utf);
jboolean is_copy = JNI_FALSE;
utf = env_->GetStringUTFChars(s, &is_copy);
EXPECT_EQ(JNI_TRUE, is_copy);
EXPECT_STREQ("hello", utf);
env_->ReleaseStringUTFChars(s, utf);
}
TEST_F(JniInternalTest, GetStringChars_ReleaseStringChars) {
jstring s = env_->NewStringUTF("hello");
ScopedObjectAccess soa(env_);
mirror::String* s_m = soa.Decode<mirror::String*>(s);
ASSERT_TRUE(s != nullptr);
jchar expected[] = { 'h', 'e', 'l', 'l', 'o' };
const jchar* chars = env_->GetStringChars(s, nullptr);
EXPECT_EQ(expected[0], chars[0]);
EXPECT_EQ(expected[1], chars[1]);
EXPECT_EQ(expected[2], chars[2]);
EXPECT_EQ(expected[3], chars[3]);
EXPECT_EQ(expected[4], chars[4]);
env_->ReleaseStringChars(s, chars);
jboolean is_copy = JNI_FALSE;
chars = env_->GetStringChars(s, &is_copy);
if (Runtime::Current()->GetHeap()->IsMovableObject(s_m->GetCharArray())) {
EXPECT_EQ(JNI_TRUE, is_copy);
} else {
EXPECT_EQ(JNI_FALSE, is_copy);
}
EXPECT_EQ(expected[0], chars[0]);
EXPECT_EQ(expected[1], chars[1]);
EXPECT_EQ(expected[2], chars[2]);
EXPECT_EQ(expected[3], chars[3]);
EXPECT_EQ(expected[4], chars[4]);
env_->ReleaseStringChars(s, chars);
}
TEST_F(JniInternalTest, GetStringCritical_ReleaseStringCritical) {
jstring s = env_->NewStringUTF("hello");
ASSERT_TRUE(s != nullptr);
jchar expected[] = { 'h', 'e', 'l', 'l', 'o' };
const jchar* chars = env_->GetStringCritical(s, nullptr);
EXPECT_EQ(expected[0], chars[0]);
EXPECT_EQ(expected[1], chars[1]);
EXPECT_EQ(expected[2], chars[2]);
EXPECT_EQ(expected[3], chars[3]);
EXPECT_EQ(expected[4], chars[4]);
env_->ReleaseStringCritical(s, chars);
jboolean is_copy = JNI_TRUE;
chars = env_->GetStringCritical(s, &is_copy);
EXPECT_EQ(JNI_FALSE, is_copy);
EXPECT_EQ(expected[0], chars[0]);
EXPECT_EQ(expected[1], chars[1]);
EXPECT_EQ(expected[2], chars[2]);
EXPECT_EQ(expected[3], chars[3]);
EXPECT_EQ(expected[4], chars[4]);
env_->ReleaseStringCritical(s, chars);
}
TEST_F(JniInternalTest, GetObjectArrayElement_SetObjectArrayElement) {
jclass java_lang_Class = env_->FindClass("java/lang/Class");
ASSERT_TRUE(java_lang_Class != nullptr);
jobjectArray array = env_->NewObjectArray(1, java_lang_Class, nullptr);
EXPECT_NE(array, nullptr);
EXPECT_EQ(env_->GetObjectArrayElement(array, 0), nullptr);
env_->SetObjectArrayElement(array, 0, java_lang_Class);
EXPECT_TRUE(env_->IsSameObject(env_->GetObjectArrayElement(array, 0), java_lang_Class));
// ArrayIndexOutOfBounds for negative index.
env_->SetObjectArrayElement(array, -1, java_lang_Class);
ExpectException(aioobe_);
// ArrayIndexOutOfBounds for too-large index.
env_->SetObjectArrayElement(array, 1, java_lang_Class);
ExpectException(aioobe_);
// ArrayStoreException thrown for bad types.
env_->SetObjectArrayElement(array, 0, env_->NewStringUTF("not a jclass!"));
ExpectException(ase_);
// Null as array should fail.
CheckJniAbortCatcher jni_abort_catcher;
EXPECT_EQ(nullptr, env_->GetObjectArrayElement(nullptr, 0));
jni_abort_catcher.Check("java_array == null");
env_->SetObjectArrayElement(nullptr, 0, nullptr);
jni_abort_catcher.Check("java_array == null");
}
#define EXPECT_STATIC_PRIMITIVE_FIELD(type, field_name, sig, value1, value2) \
do { \
jfieldID fid = env_->GetStaticFieldID(c, field_name, sig); \
EXPECT_NE(fid, nullptr); \
env_->SetStatic ## type ## Field(c, fid, value1); \
EXPECT_EQ(value1, env_->GetStatic ## type ## Field(c, fid)); \
env_->SetStatic ## type ## Field(c, fid, value2); \
EXPECT_EQ(value2, env_->GetStatic ## type ## Field(c, fid)); \
\
CheckJniAbortCatcher jni_abort_catcher; \
env_->GetStatic ## type ## Field(nullptr, fid); \
jni_abort_catcher.Check("received null jclass"); \
env_->SetStatic ## type ## Field(nullptr, fid, value1); \
jni_abort_catcher.Check("received null jclass"); \
env_->GetStatic ## type ## Field(c, nullptr); \
jni_abort_catcher.Check("fid == null"); \
env_->SetStatic ## type ## Field(c, nullptr, value1); \
jni_abort_catcher.Check("fid == null"); \
} while (false)
#define EXPECT_PRIMITIVE_FIELD(instance, type, field_name, sig, value1, value2) \
do { \
jfieldID fid = env_->GetFieldID(c, field_name, sig); \
EXPECT_NE(fid, nullptr); \
env_->Set ## type ## Field(instance, fid, value1); \
EXPECT_EQ(value1, env_->Get ## type ## Field(instance, fid)); \
env_->Set ## type ## Field(instance, fid, value2); \
EXPECT_EQ(value2, env_->Get ## type ## Field(instance, fid)); \
\
CheckJniAbortCatcher jni_abort_catcher; \
env_->Get ## type ## Field(nullptr, fid); \
jni_abort_catcher.Check("obj == null"); \
env_->Set ## type ## Field(nullptr, fid, value1); \
jni_abort_catcher.Check("obj == null"); \
env_->Get ## type ## Field(instance, nullptr); \
jni_abort_catcher.Check("fid == null"); \
env_->Set ## type ## Field(instance, nullptr, value1); \
jni_abort_catcher.Check("fid == null"); \
} while (false)
TEST_F(JniInternalTest, GetPrimitiveField_SetPrimitiveField) {
TEST_DISABLED_FOR_PORTABLE();
Thread::Current()->TransitionFromSuspendedToRunnable();
LoadDex("AllFields");
bool started = runtime_->Start();
ASSERT_TRUE(started);
jclass c = env_->FindClass("AllFields");
ASSERT_NE(c, nullptr);
jobject o = env_->AllocObject(c);
ASSERT_NE(o, nullptr);
EXPECT_STATIC_PRIMITIVE_FIELD(Boolean, "sZ", "Z", JNI_TRUE, JNI_FALSE);
EXPECT_STATIC_PRIMITIVE_FIELD(Byte, "sB", "B", 1, 2);
EXPECT_STATIC_PRIMITIVE_FIELD(Char, "sC", "C", 'a', 'b');
EXPECT_STATIC_PRIMITIVE_FIELD(Double, "sD", "D", 1.0, 2.0);
EXPECT_STATIC_PRIMITIVE_FIELD(Float, "sF", "F", 1.0, 2.0);
EXPECT_STATIC_PRIMITIVE_FIELD(Int, "sI", "I", 1, 2);
EXPECT_STATIC_PRIMITIVE_FIELD(Long, "sJ", "J", 1, 2);
EXPECT_STATIC_PRIMITIVE_FIELD(Short, "sS", "S", 1, 2);
EXPECT_PRIMITIVE_FIELD(o, Boolean, "iZ", "Z", JNI_TRUE, JNI_FALSE);
EXPECT_PRIMITIVE_FIELD(o, Byte, "iB", "B", 1, 2);
EXPECT_PRIMITIVE_FIELD(o, Char, "iC", "C", 'a', 'b');
EXPECT_PRIMITIVE_FIELD(o, Double, "iD", "D", 1.0, 2.0);
EXPECT_PRIMITIVE_FIELD(o, Float, "iF", "F", 1.0, 2.0);
EXPECT_PRIMITIVE_FIELD(o, Int, "iI", "I", 1, 2);
EXPECT_PRIMITIVE_FIELD(o, Long, "iJ", "J", 1, 2);
EXPECT_PRIMITIVE_FIELD(o, Short, "iS", "S", 1, 2);
}
TEST_F(JniInternalTest, GetObjectField_SetObjectField) {
TEST_DISABLED_FOR_PORTABLE();
Thread::Current()->TransitionFromSuspendedToRunnable();
LoadDex("AllFields");
runtime_->Start();
jclass c = env_->FindClass("AllFields");
ASSERT_NE(c, nullptr);
jobject o = env_->AllocObject(c);
ASSERT_NE(o, nullptr);
jstring s1 = env_->NewStringUTF("hello");
ASSERT_NE(s1, nullptr);
jstring s2 = env_->NewStringUTF("world");
ASSERT_NE(s2, nullptr);
jfieldID s_fid = env_->GetStaticFieldID(c, "sObject", "Ljava/lang/Object;");
ASSERT_NE(s_fid, nullptr);
jfieldID i_fid = env_->GetFieldID(c, "iObject", "Ljava/lang/Object;");
ASSERT_NE(i_fid, nullptr);
env_->SetStaticObjectField(c, s_fid, s1);
ASSERT_TRUE(env_->IsSameObject(s1, env_->GetStaticObjectField(c, s_fid)));
env_->SetStaticObjectField(c, s_fid, s2);
ASSERT_TRUE(env_->IsSameObject(s2, env_->GetStaticObjectField(c, s_fid)));
env_->SetObjectField(o, i_fid, s1);
ASSERT_TRUE(env_->IsSameObject(s1, env_->GetObjectField(o, i_fid)));
env_->SetObjectField(o, i_fid, s2);
ASSERT_TRUE(env_->IsSameObject(s2, env_->GetObjectField(o, i_fid)));
}
TEST_F(JniInternalTest, NewLocalRef_nullptr) {
EXPECT_EQ(env_->NewLocalRef(nullptr), nullptr);
}
TEST_F(JniInternalTest, NewLocalRef) {
jstring s = env_->NewStringUTF("");
ASSERT_NE(s, nullptr);
jobject o = env_->NewLocalRef(s);
EXPECT_NE(o, nullptr);
EXPECT_NE(o, s);
EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(o));
}
TEST_F(JniInternalTest, DeleteLocalRef_nullptr) {
env_->DeleteLocalRef(nullptr);
}
TEST_F(JniInternalTest, DeleteLocalRef) {
jstring s = env_->NewStringUTF("");
ASSERT_NE(s, nullptr);
env_->DeleteLocalRef(s);
// Currently, deleting an already-deleted reference is just a CheckJNI warning.
{
CheckJniAbortCatcher check_jni_abort_catcher;
env_->DeleteLocalRef(s);
std::string expected(StringPrintf("native code passing in reference to "
"invalid local reference: %p", s));
check_jni_abort_catcher.Check(expected.c_str());
}
s = env_->NewStringUTF("");
ASSERT_NE(s, nullptr);
jobject o = env_->NewLocalRef(s);
ASSERT_NE(o, nullptr);
env_->DeleteLocalRef(s);
env_->DeleteLocalRef(o);
}
TEST_F(JniInternalTest, PushLocalFrame_10395422) {
// The JNI specification is ambiguous about whether the given capacity is to be interpreted as a
// maximum or as a minimum, but it seems like it's supposed to be a minimum, and that's how
// Android historically treated it, and it's how the RI treats it. It's also the more useful
// interpretation!
ASSERT_EQ(JNI_OK, env_->PushLocalFrame(0));
env_->PopLocalFrame(nullptr);
// Negative capacities are not allowed.
ASSERT_EQ(JNI_ERR, env_->PushLocalFrame(-1));
// And it's okay to have an upper limit. Ours is currently 512.
ASSERT_EQ(JNI_ERR, env_->PushLocalFrame(8192));
}
TEST_F(JniInternalTest, PushLocalFrame_PopLocalFrame) {
jobject original = env_->NewStringUTF("");
ASSERT_NE(original, nullptr);
jobject outer;
jobject inner1, inner2;
ScopedObjectAccess soa(env_);
mirror::Object* inner2_direct_pointer;
{
ASSERT_EQ(JNI_OK, env_->PushLocalFrame(4));
outer = env_->NewLocalRef(original);
{
ASSERT_EQ(JNI_OK, env_->PushLocalFrame(4));
inner1 = env_->NewLocalRef(outer);
inner2 = env_->NewStringUTF("survivor");
inner2_direct_pointer = soa.Decode<mirror::Object*>(inner2);
env_->PopLocalFrame(inner2);
}
EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(original));
EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(outer));
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner1));
// Our local reference for the survivor is invalid because the survivor
// gets a new local reference...
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner2));
env_->PopLocalFrame(nullptr);
}
EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(original));
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(outer));
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner1));
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner2));
}
TEST_F(JniInternalTest, NewGlobalRef_nullptr) {
EXPECT_EQ(env_->NewGlobalRef(nullptr), nullptr);
}
TEST_F(JniInternalTest, NewGlobalRef) {
jstring s = env_->NewStringUTF("");
ASSERT_NE(s, nullptr);
jobject o = env_->NewGlobalRef(s);
EXPECT_NE(o, nullptr);
EXPECT_NE(o, s);
EXPECT_EQ(env_->GetObjectRefType(o), JNIGlobalRefType);
}
TEST_F(JniInternalTest, DeleteGlobalRef_nullptr) {
env_->DeleteGlobalRef(nullptr);
}
TEST_F(JniInternalTest, DeleteGlobalRef) {
jstring s = env_->NewStringUTF("");
ASSERT_NE(s, nullptr);
jobject o = env_->NewGlobalRef(s);
ASSERT_NE(o, nullptr);
env_->DeleteGlobalRef(o);
// Currently, deleting an already-deleted reference is just a CheckJNI warning.
{
CheckJniAbortCatcher check_jni_abort_catcher;
env_->DeleteGlobalRef(o);
std::string expected(StringPrintf("native code passing in reference to "
"invalid global reference: %p", o));
check_jni_abort_catcher.Check(expected.c_str());
}
jobject o1 = env_->NewGlobalRef(s);
ASSERT_NE(o1, nullptr);
jobject o2 = env_->NewGlobalRef(s);
ASSERT_NE(o2, nullptr);
env_->DeleteGlobalRef(o1);
env_->DeleteGlobalRef(o2);
}
TEST_F(JniInternalTest, NewWeakGlobalRef_nullptr) {
EXPECT_EQ(env_->NewWeakGlobalRef(nullptr), nullptr);
}
TEST_F(JniInternalTest, NewWeakGlobalRef) {
jstring s = env_->NewStringUTF("");
ASSERT_NE(s, nullptr);
jobject o = env_->NewWeakGlobalRef(s);
EXPECT_NE(o, nullptr);
EXPECT_NE(o, s);
EXPECT_EQ(env_->GetObjectRefType(o), JNIWeakGlobalRefType);
}
TEST_F(JniInternalTest, DeleteWeakGlobalRef_nullptr) {
env_->DeleteWeakGlobalRef(nullptr);
}
TEST_F(JniInternalTest, DeleteWeakGlobalRef) {
jstring s = env_->NewStringUTF("");
ASSERT_NE(s, nullptr);
jobject o = env_->NewWeakGlobalRef(s);
ASSERT_NE(o, nullptr);
env_->DeleteWeakGlobalRef(o);
// Currently, deleting an already-deleted reference is just a CheckJNI warning.
{
CheckJniAbortCatcher check_jni_abort_catcher;
env_->DeleteWeakGlobalRef(o);
std::string expected(StringPrintf("native code passing in reference to "
"invalid weak global reference: %p", o));
check_jni_abort_catcher.Check(expected.c_str());
}
jobject o1 = env_->NewWeakGlobalRef(s);
ASSERT_NE(o1, nullptr);
jobject o2 = env_->NewWeakGlobalRef(s);
ASSERT_NE(o2, nullptr);
env_->DeleteWeakGlobalRef(o1);
env_->DeleteWeakGlobalRef(o2);
}
TEST_F(JniInternalTest, ExceptionDescribe) {
// This checks how ExceptionDescribe handles call without exception.
env_->ExceptionClear();
env_->ExceptionDescribe();
}
TEST_F(JniInternalTest, Throw) {
EXPECT_EQ(JNI_ERR, env_->Throw(nullptr));
jclass exception_class = env_->FindClass("java/lang/RuntimeException");
ASSERT_TRUE(exception_class != nullptr);
jthrowable exception = reinterpret_cast<jthrowable>(env_->AllocObject(exception_class));
ASSERT_TRUE(exception != nullptr);
EXPECT_EQ(JNI_OK, env_->Throw(exception));
EXPECT_TRUE(env_->ExceptionCheck());
jthrowable thrown_exception = env_->ExceptionOccurred();
env_->ExceptionClear();
EXPECT_TRUE(env_->IsSameObject(exception, thrown_exception));
}
TEST_F(JniInternalTest, ThrowNew) {
EXPECT_EQ(JNI_ERR, env_->Throw(nullptr));
jclass exception_class = env_->FindClass("java/lang/RuntimeException");
ASSERT_TRUE(exception_class != nullptr);
jthrowable thrown_exception;
EXPECT_EQ(JNI_OK, env_->ThrowNew(exception_class, "hello world"));
EXPECT_TRUE(env_->ExceptionCheck());
thrown_exception = env_->ExceptionOccurred();
env_->ExceptionClear();
EXPECT_TRUE(env_->IsInstanceOf(thrown_exception, exception_class));
EXPECT_EQ(JNI_OK, env_->ThrowNew(exception_class, nullptr));
EXPECT_TRUE(env_->ExceptionCheck());
thrown_exception = env_->ExceptionOccurred();
env_->ExceptionClear();
EXPECT_TRUE(env_->IsInstanceOf(thrown_exception, exception_class));
}
TEST_F(JniInternalTest, NewDirectBuffer_GetDirectBufferAddress_GetDirectBufferCapacity) {
// Start runtime.
Thread* self = Thread::Current();
self->TransitionFromSuspendedToRunnable();
MakeExecutable(nullptr, "java.lang.Class");
MakeExecutable(nullptr, "java.lang.Object");
MakeExecutable(nullptr, "java.nio.DirectByteBuffer");
MakeExecutable(nullptr, "java.nio.MemoryBlock");
MakeExecutable(nullptr, "java.nio.MemoryBlock$UnmanagedBlock");
MakeExecutable(nullptr, "java.nio.MappedByteBuffer");
MakeExecutable(nullptr, "java.nio.ByteBuffer");
MakeExecutable(nullptr, "java.nio.Buffer");
// TODO: we only load a dex file here as starting the runtime relies upon it.
const char* class_name = "StaticLeafMethods";
LoadDex(class_name);
bool started = runtime_->Start();
ASSERT_TRUE(started);
jclass buffer_class = env_->FindClass("java/nio/Buffer");
ASSERT_NE(buffer_class, nullptr);
char bytes[1024];
jobject buffer = env_->NewDirectByteBuffer(bytes, sizeof(bytes));
ASSERT_NE(buffer, nullptr);
ASSERT_TRUE(env_->IsInstanceOf(buffer, buffer_class));
ASSERT_EQ(env_->GetDirectBufferAddress(buffer), bytes);
ASSERT_EQ(env_->GetDirectBufferCapacity(buffer), static_cast<jlong>(sizeof(bytes)));
{
CheckJniAbortCatcher check_jni_abort_catcher;
env_->NewDirectByteBuffer(bytes, static_cast<jlong>(INT_MAX) + 1);
check_jni_abort_catcher.Check("in call to NewDirectByteBuffer");
}
}
TEST_F(JniInternalTest, MonitorEnterExit) {
// Create an object to torture.
jclass object_class = env_->FindClass("java/lang/Object");
ASSERT_NE(object_class, nullptr);
jobject object = env_->AllocObject(object_class);
ASSERT_NE(object, nullptr);
// Expected class of exceptions
jclass imse_class = env_->FindClass("java/lang/IllegalMonitorStateException");
ASSERT_NE(imse_class, nullptr);
jthrowable thrown_exception;
// Unlock of unowned monitor
env_->MonitorExit(object);
EXPECT_TRUE(env_->ExceptionCheck());
thrown_exception = env_->ExceptionOccurred();
env_->ExceptionClear();
EXPECT_TRUE(env_->IsInstanceOf(thrown_exception, imse_class));
// Lock of unowned monitor
env_->MonitorEnter(object);
EXPECT_FALSE(env_->ExceptionCheck());
// Regular unlock
env_->MonitorExit(object);
EXPECT_FALSE(env_->ExceptionCheck());
// Recursively lock a lot
size_t max_recursive_lock = 1024;
for (size_t i = 0; i < max_recursive_lock; i++) {
env_->MonitorEnter(object);
EXPECT_FALSE(env_->ExceptionCheck());
}
// Recursively unlock a lot
for (size_t i = 0; i < max_recursive_lock; i++) {
env_->MonitorExit(object);
EXPECT_FALSE(env_->ExceptionCheck());
}
// Unlock of unowned monitor
env_->MonitorExit(object);
EXPECT_TRUE(env_->ExceptionCheck());
thrown_exception = env_->ExceptionOccurred();
env_->ExceptionClear();
EXPECT_TRUE(env_->IsInstanceOf(thrown_exception, imse_class));
// It's an error to call MonitorEnter or MonitorExit on nullptr.
{
CheckJniAbortCatcher check_jni_abort_catcher;
env_->MonitorEnter(nullptr);
check_jni_abort_catcher.Check("in call to MonitorEnter");
env_->MonitorExit(nullptr);
check_jni_abort_catcher.Check("in call to MonitorExit");
}
}
TEST_F(JniInternalTest, DetachCurrentThread) {
CleanUpJniEnv(); // cleanup now so TearDown won't have junk from wrong JNIEnv
jint ok = vm_->DetachCurrentThread();
EXPECT_EQ(JNI_OK, ok);
jint err = vm_->DetachCurrentThread();
EXPECT_EQ(JNI_ERR, err);
vm_->AttachCurrentThread(&env_, nullptr); // need attached thread for CommonRuntimeTest::TearDown
}
} // namespace art