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android / platform / art / d0b940349294a363e6d578adf58db8222c425669 / . / runtime / jni / jni_internal_test.cc
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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 "android-base/stringprintf.h"
#include "art_method-inl.h"
#include "base/mem_map.h"
#include "common_runtime_test.h"
#include "indirect_reference_table.h"
#include "java_vm_ext.h"
#include "jni_env_ext.h"
#include "mirror/string-inl.h"
#include "nativehelper/scoped_local_ref.h"
#include "scoped_thread_state_change-inl.h"
namespace art {
using android::base::StringPrintf;
class JniInternalTest : public CommonRuntimeTest {
protected:
void SetUp() override {
CommonRuntimeTest::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) {
ScopedObjectAccess soa(env_);
EXPECT_TRUE(env_->ExceptionCheck())
<< mirror::Class::PrettyDescriptor(soa.Decode<mirror::Class>(exception_class));
jthrowable exception = env_->ExceptionOccurred();
EXPECT_NE(nullptr, exception);
env_->ExceptionClear();
EXPECT_TRUE(env_->IsInstanceOf(exception, exception_class));
}
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;
}
}
void TearDown() override {
CleanUpJniEnv();
CommonRuntimeTest::TearDown();
}
jclass GetPrimitiveClass(char descriptor) {
ScopedObjectAccess soa(env_);
ObjPtr<mirror::Class> c = class_linker_->FindPrimitiveClass(descriptor);
CHECK(c != nullptr);
return soa.AddLocalReference<jclass>(c);
}
void ExpectClassFound(const char* name) {
EXPECT_NE(env_->FindClass(name), nullptr) << name;
EXPECT_FALSE(env_->ExceptionCheck()) << name;
}
void ExpectClassNotFound(const char* name, bool check_jni, const char* check_jni_msg,
CheckJniAbortCatcher* abort_catcher) {
EXPECT_EQ(env_->FindClass(name), nullptr) << name;
if (!check_jni || check_jni_msg == nullptr) {
EXPECT_TRUE(env_->ExceptionCheck()) << name;
env_->ExceptionClear();
} else {
abort_catcher->Check(check_jni_msg);
}
}
void FindClassTest(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
CheckJniAbortCatcher check_jni_abort_catcher;
// Null argument is always an abort.
env_->FindClass(nullptr);
check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
: "name == null");
// 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");
// But primitive types aren't allowed...
ExpectClassNotFound("C", check_jni, nullptr, &check_jni_abort_catcher);
ExpectClassNotFound("V", check_jni, nullptr, &check_jni_abort_catcher);
ExpectClassNotFound("K", check_jni, nullptr, &check_jni_abort_catcher);
if (check_jni) {
// Check JNI will reject invalid class names as aborts but without pending exceptions.
EXPECT_EQ(env_->FindClass("java.lang.String"), nullptr);
EXPECT_FALSE(env_->ExceptionCheck());
check_jni_abort_catcher.Check("illegal class name 'java.lang.String'");
EXPECT_EQ(env_->FindClass("[Ljava.lang.String;"), nullptr);
EXPECT_FALSE(env_->ExceptionCheck());
check_jni_abort_catcher.Check("illegal class name '[Ljava.lang.String;'");
} else {
// Without check JNI we're tolerant and replace '.' with '/'.
ExpectClassFound("java.lang.String");
ExpectClassFound("[Ljava.lang.String;");
}
ExpectClassNotFound("Ljava.lang.String;", check_jni, "illegal class name 'Ljava.lang.String;'",
&check_jni_abort_catcher);
ExpectClassNotFound("[java.lang.String", check_jni, "illegal class name '[java.lang.String'",
&check_jni_abort_catcher);
// You can't include the "L;" in a JNI class descriptor.
ExpectClassNotFound("Ljava/lang/String;", check_jni, "illegal class name 'Ljava/lang/String;'",
&check_jni_abort_catcher);
// But you must include it for an array of any reference type.
ExpectClassNotFound("[java/lang/String", check_jni, "illegal class name '[java/lang/String'",
&check_jni_abort_catcher);
ExpectClassNotFound("[K", check_jni, "illegal class name '[K'", &check_jni_abort_catcher);
// Void arrays aren't allowed.
ExpectClassNotFound("[V", check_jni, "illegal class name '[V'", &check_jni_abort_catcher);
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void GetFieldIdBadArgumentTest(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
CheckJniAbortCatcher check_jni_abort_catcher;
jclass c = env_->FindClass("java/lang/String");
ASSERT_NE(c, nullptr);
jfieldID fid = env_->GetFieldID(nullptr, "count", "I");
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check(check_jni ? "GetFieldID received NULL jclass"
: "java_class == null");
fid = env_->GetFieldID(c, nullptr, "I");
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
: "name == null");
fid = env_->GetFieldID(c, "count", nullptr);
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
: "sig == null");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void GetStaticFieldIdBadArgumentTest(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
CheckJniAbortCatcher check_jni_abort_catcher;
jclass c = env_->FindClass("java/lang/String");
ASSERT_NE(c, nullptr);
jfieldID fid = env_->GetStaticFieldID(nullptr, "CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check(check_jni ? "GetStaticFieldID received NULL jclass"
: "java_class == null");
fid = env_->GetStaticFieldID(c, nullptr, "Ljava/util/Comparator;");
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
: "name == null");
fid = env_->GetStaticFieldID(c, "CASE_INSENSITIVE_ORDER", nullptr);
EXPECT_EQ(nullptr, fid);
check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
: "sig == null");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void GetMethodIdBadArgumentTest(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
CheckJniAbortCatcher check_jni_abort_catcher;
jmethodID method = env_->GetMethodID(nullptr, "<init>", "(Ljava/lang/String;)V");
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check(check_jni ? "GetMethodID received NULL jclass"
: "java_class == null");
jclass jlnsme = env_->FindClass("java/lang/NoSuchMethodError");
ASSERT_TRUE(jlnsme != nullptr);
method = env_->GetMethodID(jlnsme, nullptr, "(Ljava/lang/String;)V");
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
: "name == null");
method = env_->GetMethodID(jlnsme, "<init>", nullptr);
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
: "sig == null");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void GetStaticMethodIdBadArgumentTest(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
CheckJniAbortCatcher check_jni_abort_catcher;
jmethodID method = env_->GetStaticMethodID(nullptr, "valueOf", "(I)Ljava/lang/String;");
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check(check_jni ? "GetStaticMethodID received NULL jclass"
: "java_class == null");
jclass jlstring = env_->FindClass("java/lang/String");
method = env_->GetStaticMethodID(jlstring, nullptr, "(I)Ljava/lang/String;");
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
: "name == null");
method = env_->GetStaticMethodID(jlstring, "valueOf", nullptr);
EXPECT_EQ(nullptr, method);
check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
: "sig == null");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void GetFromReflectedField_ToReflectedFieldBadArgumentTest(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
CheckJniAbortCatcher check_jni_abort_catcher;
jclass c = env_->FindClass("java/lang/String");
ASSERT_NE(c, nullptr);
jfieldID fid = env_->GetFieldID(c, "count", "I");
ASSERT_NE(fid, nullptr);
// Check class argument for null argument, not checked in non-check JNI.
jobject field = env_->ToReflectedField(nullptr, fid, JNI_FALSE);
if (check_jni) {
EXPECT_EQ(field, nullptr);
check_jni_abort_catcher.Check("ToReflectedField received NULL jclass");
} else {
EXPECT_NE(field, nullptr);
}
field = env_->ToReflectedField(c, nullptr, JNI_FALSE);
EXPECT_EQ(field, nullptr);
check_jni_abort_catcher.Check(check_jni ? "jfieldID was NULL"
: "fid == null");
fid = env_->FromReflectedField(nullptr);
ASSERT_EQ(fid, nullptr);
check_jni_abort_catcher.Check(check_jni ? "expected non-null java.lang.reflect.Field"
: "jlr_field == null");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void GetFromReflectedMethod_ToReflectedMethodBadArgumentTest(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
CheckJniAbortCatcher check_jni_abort_catcher;
jclass c = env_->FindClass("java/lang/String");
ASSERT_NE(c, nullptr);
jmethodID mid = env_->GetMethodID(c, "<init>", "()V");
ASSERT_NE(mid, nullptr);
// Check class argument for null argument, not checked in non-check JNI.
jobject method = env_->ToReflectedMethod(nullptr, mid, JNI_FALSE);
if (check_jni) {
EXPECT_EQ(method, nullptr);
check_jni_abort_catcher.Check("ToReflectedMethod received NULL jclass");
} else {
EXPECT_NE(method, nullptr);
}
method = env_->ToReflectedMethod(c, nullptr, JNI_FALSE);
EXPECT_EQ(method, nullptr);
check_jni_abort_catcher.Check(check_jni ? "jmethodID was NULL"
: "mid == null");
mid = env_->FromReflectedMethod(method);
ASSERT_EQ(mid, nullptr);
check_jni_abort_catcher.Check(check_jni ? "expected non-null method" : "jlr_method == null");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void RegisterAndUnregisterNativesBadArguments(bool check_jni,
CheckJniAbortCatcher* check_jni_abort_catcher) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
// Passing a class of null is a failure.
{
JNINativeMethod methods[] = { };
EXPECT_EQ(env_->RegisterNatives(nullptr, methods, 0), JNI_ERR);
check_jni_abort_catcher->Check(check_jni ? "RegisterNatives received NULL jclass"
: "java_class == null");
}
// Passing methods as null is a failure.
jclass jlobject = env_->FindClass("java/lang/Object");
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(check_jni ? "UnregisterNatives received NULL jclass"
: "java_class == null");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void GetPrimitiveArrayElementsOfWrongType(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
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(
check_jni ? "incompatible array type boolean[] expected byte[]"
: "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(
check_jni ? "incompatible array type boolean[] expected short[]"
: "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(
check_jni ? "incompatible array type boolean[] expected char[]"
: "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(
check_jni ? "incompatible array type boolean[] expected int[]"
: "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(
check_jni ? "incompatible array type boolean[] expected long[]"
: "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(
check_jni ? "incompatible array type boolean[] expected float[]"
: "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(
check_jni ? "incompatible array type boolean[] expected double[]"
: "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(
check_jni ? "incompatible array type byte[] expected boolean[]"
: "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(
check_jni ? "jarray argument has non-array type: java.lang.String"
: "attempt to get boolean primitive array elements with an object of type java.lang.String");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void ReleasePrimitiveArrayElementsOfWrongType(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
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(
check_jni ? "incompatible array type boolean[] expected byte[]"
: "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(
check_jni ? "incompatible array type boolean[] expected short[]"
: "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(
check_jni ? "incompatible array type boolean[] expected char[]"
: "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(
check_jni ? "incompatible array type boolean[] expected int[]"
: "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(
check_jni ? "incompatible array type boolean[] expected long[]"
: "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(
check_jni ? "incompatible array type boolean[] expected float[]"
: "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(
check_jni ? "incompatible array type boolean[] expected double[]"
: "attempt to release double primitive array elements with an object of type boolean[]");
// Don't leak the elements array.
env_->ReleaseBooleanArrayElements(array, elements, 0);
}
{
jbyteArray array = env_->NewByteArray(10);
jboolean is_copy;
jbyte* elements = env_->GetByteArrayElements(array, &is_copy);
env_->ReleaseBooleanArrayElements(reinterpret_cast<jbooleanArray>(array),
reinterpret_cast<jboolean*>(elements), 0);
jni_abort_catcher.Check(
check_jni ? "incompatible array type byte[] expected boolean[]"
: "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),
reinterpret_cast<jboolean*>(elements), 0);
jni_abort_catcher.Check(
check_jni ? "jarray argument has non-array type: java.lang.String"
: "attempt to release boolean primitive array elements with an object of type "
"java.lang.String");
// Don't leak the elements array.
env_->ReleaseByteArrayElements(array, elements, 0);
}
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void GetReleasePrimitiveArrayCriticalOfWrongType(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
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(check_jni ? "jarray argument has non-array type: java.lang.String"
: "expected primitive array, given java.lang.String");
env_->ReleasePrimitiveArrayCritical(reinterpret_cast<jarray>(object), elements, 0);
jni_abort_catcher.Check(check_jni ? "jarray argument has non-array type: java.lang.String"
: "expected primitive array, given java.lang.String");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void GetPrimitiveArrayRegionElementsOfWrongType(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
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(
check_jni ? "incompatible array type boolean[] expected byte[]"
: "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(
check_jni ? "incompatible array type boolean[] expected short[]"
: "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(
check_jni ? "incompatible array type boolean[] expected char[]"
: "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(
check_jni ? "incompatible array type boolean[] expected int[]"
: "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(
check_jni ? "incompatible array type boolean[] expected long[]"
: "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(
check_jni ? "incompatible array type boolean[] expected float[]"
: "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(
check_jni ? "incompatible array type boolean[] expected double[]"
: "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(
check_jni ? "incompatible array type byte[] expected boolean[]"
: "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(check_jni ? "jarray argument has non-array type: java.lang.String"
: "attempt to get region of boolean primitive array elements with an object of type "
"java.lang.String");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void SetPrimitiveArrayRegionElementsOfWrongType(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
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(
check_jni ? "incompatible array type boolean[] expected byte[]"
: "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(
check_jni ? "incompatible array type boolean[] expected short[]"
: "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(
check_jni ? "incompatible array type boolean[] expected char[]"
: "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(
check_jni ? "incompatible array type boolean[] expected int[]"
: "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(
check_jni ? "incompatible array type boolean[] expected long[]"
: "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(
check_jni ? "incompatible array type boolean[] expected float[]"
: "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(
check_jni ? "incompatible array type boolean[] expected double[]"
: "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(
check_jni ? "incompatible array type byte[] expected boolean[]"
: "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(check_jni ? "jarray argument has non-array type: java.lang.String"
: "attempt to set region of boolean primitive array elements with an object of type "
"java.lang.String");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void NewObjectArrayBadArguments(bool check_jni) {
bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
CheckJniAbortCatcher jni_abort_catcher;
jclass element_class = env_->FindClass("java/lang/String");
ASSERT_NE(element_class, nullptr);
env_->NewObjectArray(-1, element_class, nullptr);
jni_abort_catcher.Check(check_jni ? "negative jsize: -1" : "negative array length: -1");
env_->NewObjectArray(std::numeric_limits<jint>::min(), element_class, nullptr);
jni_abort_catcher.Check(check_jni ? "negative jsize: -2147483648"
: "negative array length: -2147483648");
EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
}
void SetUpForTest(bool direct, const char* method_name, const char* method_sig,
void* native_fnptr) {
// Initialize class loader and set generic JNI entrypoint.
// Note: this code is adapted from the jni_compiler_test, and taken with minimal modifications.
if (!runtime_->IsStarted()) {
{
ScopedObjectAccess soa(Thread::Current());
class_loader_ = LoadDex("MyClassNatives");
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ClassLoader> loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader>(class_loader_)));
ObjPtr<mirror::Class> c = class_linker_->FindClass(soa.Self(), "LMyClassNatives;", loader);
const auto pointer_size = class_linker_->GetImagePointerSize();
ArtMethod* method = c->FindClassMethod(method_name, method_sig, pointer_size);
ASSERT_TRUE(method != nullptr) << method_name << " " << method_sig;
ASSERT_EQ(direct, method->IsDirect());
method->SetEntryPointFromQuickCompiledCode(class_linker_->GetRuntimeQuickGenericJniStub());
}
// Start runtime.
Thread::Current()->TransitionFromSuspendedToRunnable();
bool started = runtime_->Start();
CHECK(started);
}
// JNI operations after runtime start.
env_ = Thread::Current()->GetJniEnv();
jklass_ = env_->FindClass("MyClassNatives");
ASSERT_TRUE(jklass_ != nullptr) << method_name << " " << method_sig;
if (direct) {
jmethod_ = env_->GetStaticMethodID(jklass_, method_name, method_sig);
} else {
jmethod_ = env_->GetMethodID(jklass_, method_name, method_sig);
}
ASSERT_TRUE(jmethod_ != nullptr) << method_name << " " << method_sig;
if (native_fnptr != nullptr) {
JNINativeMethod methods[] = { { method_name, method_sig, native_fnptr } };
ASSERT_EQ(JNI_OK, env_->RegisterNatives(jklass_, methods, 1))
<< method_name << " " << method_sig;
} else {
env_->UnregisterNatives(jklass_);
}
jmethodID constructor = env_->GetMethodID(jklass_, "<init>", "()V");
jobj_ = env_->NewObject(jklass_, constructor);
ASSERT_TRUE(jobj_ != nullptr) << method_name << " " << method_sig;
}
JavaVMExt* vm_;
JNIEnv* env_;
jclass aioobe_;
jclass ase_;
jclass sioobe_;
jclass jklass_;
jobject jobj_;
jobject class_loader_;
jmethodID jmethod_;
};
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.
// Even with string compression empty string has `count == 0`.
ASSERT_EQ(0, env_->GetIntField(o, env_->GetFieldID(c, "count", "I")));
}
TEST_F(JniInternalTest, GetVersion) {
ASSERT_EQ(JNI_VERSION_1_6, env_->GetVersion());
}
TEST_F(JniInternalTest, FindClass) {
// This tests leads to warnings in the log.
ScopedLogSeverity sls(LogSeverity::ERROR);
FindClassTest(false);
FindClassTest(true);
}
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.
GetFieldIdBadArgumentTest(false);
GetFieldIdBadArgumentTest(true);
}
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.
GetStaticFieldIdBadArgumentTest(false);
GetStaticFieldIdBadArgumentTest(true);
}
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.
GetMethodIdBadArgumentTest(false);
GetMethodIdBadArgumentTest(true);
}
TEST_F(JniInternalTest, CallVoidMethodNullReceiver) {
jclass jlobject = env_->FindClass("java/lang/Object");
jmethodID method;
// Check that GetMethodID for java.lang.NoSuchMethodError.<init>(String) finds the constructor.
method = env_->GetMethodID(jlobject, "<init>", "()V");
EXPECT_NE(nullptr, method);
EXPECT_FALSE(env_->ExceptionCheck());
// Null object to CallVoidMethod.
CheckJniAbortCatcher check_jni_abort_catcher;
env_->CallVoidMethod(nullptr, method);
check_jni_abort_catcher.Check("null");
}
TEST_F(JniInternalTest, CallVarArgMethodBadPrimitive) {
// Check that bad primitive values cause check JNI to abort when
// passed out-of-range primitive value var args. As var args can't
// differentiate type sizes less than an int, and this isn't
// corrected by JNI, this helps ensure JNI code is valid.
#define DoCall(boxed_type, shorty, c_type, bad_value) \
{ \
jclass prim_class = env_->FindClass("java/lang/" #boxed_type); \
jmethodID method = env_->GetStaticMethodID(prim_class, "valueOf", \
"(" #shorty ")Ljava/lang/" #boxed_type ";"); \
EXPECT_NE(nullptr, method); \
EXPECT_FALSE(env_->ExceptionCheck()); \
CheckJniAbortCatcher check_jni_abort_catcher; \
env_->CallStaticObjectMethod(prim_class, method, bad_value); \
check_jni_abort_catcher.Check("unexpected " #c_type " value: " #bad_value); \
}
DoCall(Boolean, Z, jboolean, 2);
DoCall(Byte, B, jbyte, 128);
DoCall(Byte, B, jbyte, -129);
DoCall(Short, S, jshort, 32768);
DoCall(Short, S, jshort, -32769);
DoCall(Character, C, jchar, 65536);
DoCall(Character, C, jchar, -1);
#undef DoCall
}
TEST_F(JniInternalTest, CallJValueMethodBadPrimitive) {
// Check that bad primitive values, passed as jvalues, cause check
// JNI to abort. Unlike with var args, sizes less than an int should
// be truncated or sign extended and not cause an abort except for
// jbooleans that are passed as bytes.
#define DoFailCall(boxed_type, shorty, c_type, bad_value) \
{ \
jclass prim_class = env_->FindClass("java/lang/" #boxed_type); \
jmethodID method = env_->GetStaticMethodID(prim_class, "valueOf", \
"(" #shorty ")Ljava/lang/" #boxed_type ";"); \
EXPECT_NE(nullptr, method); \
EXPECT_FALSE(env_->ExceptionCheck()); \
CheckJniAbortCatcher check_jni_abort_catcher; \
jvalue jval; \
jval.i = bad_value; \
env_->CallStaticObjectMethodA(prim_class, method, &jval); \
check_jni_abort_catcher.Check("unexpected " #c_type " value: " #bad_value); \
}
#define DoGoodCall(boxed_type, shorty, c_type, bad_value) \
{ \
jclass prim_class = env_->FindClass("java/lang/" #boxed_type); \
jmethodID method = env_->GetStaticMethodID(prim_class, "valueOf", \
"(" #shorty ")Ljava/lang/" #boxed_type ";"); \
EXPECT_NE(nullptr, method); \
EXPECT_FALSE(env_->ExceptionCheck()); \
jvalue jval; \
jval.i = bad_value; \
env_->CallStaticObjectMethodA(prim_class, method, &jval); \
}
DoFailCall(Boolean, Z, jboolean, 2);
DoGoodCall(Byte, B, jbyte, 128);
DoGoodCall(Byte, B, jbyte, -129);
DoGoodCall(Short, S, jshort, 32768);
DoGoodCall(Short, S, jshort, -32769);
DoGoodCall(Character, C, jchar, 65536);
DoGoodCall(Character, C, jchar, -1);
#undef DoCall
}
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.
GetStaticMethodIdBadArgumentTest(false);
GetStaticMethodIdBadArgumentTest(true);
}
static size_t GetLocalsCapacity(JNIEnv* env) {
ScopedObjectAccess soa(Thread::Current());
return reinterpret_cast<JNIEnvExt*>(env)->GetLocalsCapacity();
}
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);
size_t capacity_before = GetLocalsCapacity(env_);
for (size_t i = 0; i <= 10; ++i) {
// Regression test for b/18396311, ToReflectedField leaking local refs causing a local
// reference table overflows with 512 references to ArtField
env_->DeleteLocalRef(env_->ToReflectedField(c, fid, JNI_FALSE));
}
size_t capacity_after = GetLocalsCapacity(env_);
ASSERT_EQ(capacity_before, capacity_after);
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");
if (mirror::kUseStringCompression) {
ASSERT_EQ(mirror::String::GetFlaggedCount(4, /* compressible= */ true),
env_->GetIntField(s, fid2));
// Create incompressible string
jstring s_16 = env_->NewStringUTF("\u0444\u0444");
ASSERT_EQ(mirror::String::GetFlaggedCount(2, /* compressible= */ false),
env_->GetIntField(s_16, fid2));
} else {
ASSERT_EQ(4, env_->GetIntField(s, fid2));
}
// Bad arguments.
GetFromReflectedField_ToReflectedFieldBadArgumentTest(false);
GetFromReflectedField_ToReflectedFieldBadArgumentTest(true);
}
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);
size_t capacity_before = GetLocalsCapacity(env_);
for (size_t i = 0; i <= 10; ++i) {
// Regression test for b/18396311, ToReflectedMethod leaking local refs causing a local
// reference table overflows with 512 references to ArtMethod
env_->DeleteLocalRef(env_->ToReflectedMethod(c, mid, JNI_FALSE));
}
size_t capacity_after = GetLocalsCapacity(env_);
ASSERT_EQ(capacity_before, capacity_after);
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());
env_->ExceptionClear();
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.
GetFromReflectedMethod_ToReflectedMethodBadArgumentTest(false);
GetFromReflectedMethod_ToReflectedMethodBadArgumentTest(true);
}
static void BogusMethod() {
// You can't pass null 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());
// The following can print errors to the log we'd like to ignore.
{
ScopedLogSeverity sls(LogSeverity::FATAL);
// 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());
// Unregistering a class with no natives is a warning.
EXPECT_EQ(env_->UnregisterNatives(jlnsme), JNI_OK);
RegisterAndUnregisterNativesBadArguments(false, &check_jni_abort_catcher);
RegisterAndUnregisterNativesBadArguments(true, &check_jni_abort_catcher);
}
#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; \
down_cast<JNIEnvExt*>(env_)->SetCheckJniEnabled(false); \
/* 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"); \
down_cast<JNIEnvExt*>(env_)->SetCheckJniEnabled(true); \
} \
/* 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_); \
\
/* Regression test against integer overflow in range check. */ \
env_->get_region_fn(a, 0x7fffffff, 0x7fffffff, nullptr); \
ExpectException(aioobe_); \
env_->set_region_fn(a, 0x7fffffff, 0x7fffffff, nullptr); \
ExpectException(aioobe_); \
\
/* It's okay for the buffer to be null 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 null 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. */ \
/* NOLINT, no parentheses around scalar_type. */ \
std::unique_ptr<scalar_type[]> src_buf(new scalar_type[size]); /* NOLINT */ \
std::unique_ptr<scalar_type[]> dst_buf(new scalar_type[size]); /* NOLINT */ \
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); /* NOLINT, scalar_type */ \
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) {
GetPrimitiveArrayElementsOfWrongType(false);
GetPrimitiveArrayElementsOfWrongType(true);
}
TEST_F(JniInternalTest, ReleasePrimitiveArrayElementsOfWrongType) {
ReleasePrimitiveArrayElementsOfWrongType(false);
ReleasePrimitiveArrayElementsOfWrongType(true);
}
TEST_F(JniInternalTest, GetReleasePrimitiveArrayCriticalOfWrongType) {
GetReleasePrimitiveArrayCriticalOfWrongType(false);
GetReleasePrimitiveArrayCriticalOfWrongType(true);
}
TEST_F(JniInternalTest, GetPrimitiveArrayRegionElementsOfWrongType) {
GetPrimitiveArrayRegionElementsOfWrongType(false);
GetPrimitiveArrayRegionElementsOfWrongType(true);
}
TEST_F(JniInternalTest, SetPrimitiveArrayRegionElementsOfWrongType) {
SetPrimitiveArrayRegionElementsOfWrongType(false);
SetPrimitiveArrayRegionElementsOfWrongType(true);
}
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.
NewObjectArrayBadArguments(false);
NewObjectArrayBadArguments(true);
}
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));
bool old_check_jni = vm_->SetCheckJniEnabled(false);
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());
}
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
for (size_t i = 0; i < strlen(primitive_descriptors); ++i) {
env_->NewObjectArray(0, nullptr, nullptr);
jni_abort_catcher.Check("NewObjectArray received NULL jclass");
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());
}
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
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 except for null.
CheckJniAbortCatcher jni_abort_catcher;
bool old_check_jni = vm_->SetCheckJniEnabled(false);
EXPECT_EQ(0, env_->GetArrayLength(nullptr));
jni_abort_catcher.Check("java_array == null");
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
EXPECT_EQ(JNI_ERR, env_->GetArrayLength(nullptr));
jni_abort_catcher.Check("jarray was NULL");
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
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_EQ(env_->GetSuperclass(runnable_interface), nullptr);
// Null as class should fail.
CheckJniAbortCatcher jni_abort_catcher;
bool old_check_jni = vm_->SetCheckJniEnabled(false);
EXPECT_EQ(env_->GetSuperclass(nullptr), nullptr);
jni_abort_catcher.Check("java_class == null");
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
EXPECT_EQ(env_->GetSuperclass(nullptr), nullptr);
jni_abort_catcher.Check("GetSuperclass received NULL jclass");
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
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;
bool old_check_jni = vm_->SetCheckJniEnabled(false);
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");
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
EXPECT_EQ(env_->IsAssignableFrom(nullptr, string_class), JNI_FALSE);
jni_abort_catcher.Check("IsAssignableFrom received NULL jclass");
EXPECT_EQ(env_->IsAssignableFrom(object_class, nullptr), JNI_FALSE);
jni_abort_catcher.Check("IsAssignableFrom received NULL jclass");
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
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));
{
CheckJniAbortCatcher jni_abort_catcher;
jobject invalid = reinterpret_cast<jobject>(this);
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(invalid));
jni_abort_catcher.Check("use of invalid jobject");
}
// TODO: invoke a native method and test that its arguments are considered local references.
// Null as pointer should not fail and return invalid-ref. b/18820997
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(nullptr));
// TODO: Null as reference should return the original type.
// This requires running a GC so a non-null object gets freed.
}
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);
// GC should clear the weak global.
Runtime::Current()->GetHeap()->CollectGarbage(/* clear_soft_references= */ false);
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));
// Encoded surrogate pair.
s = env_->NewStringUTF("\xed\xa0\x81\xed\xb0\x80");
EXPECT_NE(s, nullptr);
EXPECT_EQ(2, env_->GetStringLength(s));
// The surrogate pair gets encoded into a 4 byte UTF sequence..
EXPECT_EQ(4, env_->GetStringUTFLength(s));
const char* chars = env_->GetStringUTFChars(s, nullptr);
EXPECT_STREQ("\xf0\x90\x90\x80", chars);
env_->ReleaseStringUTFChars(s, chars);
// .. but is stored as is in the utf-16 representation.
const jchar* jchars = env_->GetStringChars(s, nullptr);
EXPECT_EQ(0xd801, jchars[0]);
EXPECT_EQ(0xdc00, jchars[1]);
env_->ReleaseStringChars(s, jchars);
// 4 byte UTF sequence appended to an encoded surrogate pair.
s = env_->NewStringUTF("\xed\xa0\x81\xed\xb0\x80 \xf0\x9f\x8f\xa0");
EXPECT_NE(s, nullptr);
// The 4 byte sequence {0xf0, 0x9f, 0x8f, 0xa0} is converted into a surrogate
// pair {0xd83c, 0xdfe0}.
EXPECT_EQ(5, env_->GetStringLength(s));
jchars = env_->GetStringChars(s, nullptr);
// The first surrogate pair, encoded as such in the input.
EXPECT_EQ(0xd801, jchars[0]);
EXPECT_EQ(0xdc00, jchars[1]);
// The second surrogate pair, from the 4 byte UTF sequence in the input.
EXPECT_EQ(0xd83c, jchars[3]);
EXPECT_EQ(0xdfe0, jchars[4]);
env_->ReleaseStringChars(s, jchars);
EXPECT_EQ(9, env_->GetStringUTFLength(s));
chars = env_->GetStringUTFChars(s, nullptr);
EXPECT_STREQ("\xf0\x90\x90\x80 \xf0\x9f\x8f\xa0", chars);
env_->ReleaseStringUTFChars(s, chars);
// A string with 1, 2, 3 and 4 byte UTF sequences with spaces
// between them
s = env_->NewStringUTF("\x24 \xc2\xa2 \xe2\x82\xac \xf0\x9f\x8f\xa0");
EXPECT_NE(s, nullptr);
EXPECT_EQ(8, env_->GetStringLength(s));
EXPECT_EQ(13, env_->GetStringUTFLength(s));
}
TEST_F(JniInternalTest, NewStringUTF_Validation) {
// For the following tests, allocate two pages, one R/W and the next inaccessible.
std::string error_msg;
MemMap head_map = MemMap::MapAnonymous(
"head", 2 * kPageSize, PROT_READ | PROT_WRITE, /*low_4gb=*/ false, &error_msg);
ASSERT_TRUE(head_map.IsValid()) << error_msg;
MemMap tail_map = head_map.RemapAtEnd(
head_map.Begin() + kPageSize, "tail", PROT_NONE, &error_msg);
ASSERT_TRUE(tail_map.IsValid()) << error_msg;
char* utf_src = reinterpret_cast<char*>(head_map.Begin());
// Prepare for checking the `count` field.
jclass c = env_->FindClass("java/lang/String");
ASSERT_NE(c, nullptr);
jfieldID count_fid = env_->GetFieldID(c, "count", "I");
ASSERT_TRUE(count_fid != nullptr);
// Prepare for testing with the unchecked interface.
const JNINativeInterface* base_env = down_cast<JNIEnvExt*>(env_)->GetUncheckedFunctions();
// Start with a simple ASCII string consisting of 4095 characters 'x'.
memset(utf_src, 'x', kPageSize - 1u);
utf_src[kPageSize - 1u] = 0u;
jstring s = base_env->NewStringUTF(env_, utf_src);
ASSERT_EQ(mirror::String::GetFlaggedCount(kPageSize - 1u, /* compressible= */ true),
env_->GetIntField(s, count_fid));
const char* chars = env_->GetStringUTFChars(s, nullptr);
for (size_t pos = 0; pos != kPageSize - 1u; ++pos) {
ASSERT_EQ('x', chars[pos]) << pos;
}
env_->ReleaseStringUTFChars(s, chars);
// Replace the last character with invalid character that requires continuation.
for (char invalid : { '\xc0', '\xe0', '\xf0' }) {
utf_src[kPageSize - 2u] = invalid;
s = base_env->NewStringUTF(env_, utf_src);
ASSERT_EQ(mirror::String::GetFlaggedCount(kPageSize - 1u, /* compressible= */ true),
env_->GetIntField(s, count_fid));
chars = env_->GetStringUTFChars(s, nullptr);
for (size_t pos = 0; pos != kPageSize - 2u; ++pos) {
ASSERT_EQ('x', chars[pos]) << pos;
}
EXPECT_EQ('?', chars[kPageSize - 2u]);
env_->ReleaseStringUTFChars(s, chars);
}
// Replace the first two characters with a valid two-byte sequence yielding one character.
utf_src[0] = '\xc2';
utf_src[1] = '\x80';
s = base_env->NewStringUTF(env_, utf_src);
ASSERT_EQ(mirror::String::GetFlaggedCount(kPageSize - 2u, /* compressible= */ false),
env_->GetIntField(s, count_fid));
const jchar* jchars = env_->GetStringChars(s, nullptr);
EXPECT_EQ(jchars[0], 0x80u);
for (size_t pos = 1; pos != kPageSize - 3u; ++pos) {
ASSERT_EQ('x', jchars[pos]) << pos;
}
EXPECT_EQ('?', jchars[kPageSize - 3u]);
env_->ReleaseStringChars(s, jchars);
// Replace the leading two-byte sequence with a two-byte sequence that decodes as ASCII (0x40).
// The sequence shall be replaced if string compression is used.
utf_src[0] = '\xc1';
utf_src[1] = '\x80';
s = base_env->NewStringUTF(env_, utf_src);
// Note: All invalid characters are replaced by ASCII replacement character.
ASSERT_EQ(mirror::String::GetFlaggedCount(kPageSize - 2u, /* compressible= */ true),
env_->GetIntField(s, count_fid));
jchars = env_->GetStringChars(s, nullptr);
EXPECT_EQ(mirror::kUseStringCompression ? '?' : '\x40', jchars[0]);
for (size_t pos = 1; pos != kPageSize - 3u; ++pos) {
ASSERT_EQ('x', jchars[pos]) << pos;
}
EXPECT_EQ('?', jchars[kPageSize - 3u]);
env_->ReleaseStringChars(s, jchars);
// Replace the leading three bytes with a three-byte sequence that decodes as ASCII (0x40).
// The sequence shall be replaced if string compression is used.
utf_src[0] = '\xe0';
utf_src[1] = '\x81';
utf_src[2] = '\x80';
s = base_env->NewStringUTF(env_, utf_src);
// Note: All invalid characters are replaced by ASCII replacement character.
ASSERT_EQ(mirror::String::GetFlaggedCount(kPageSize - 3u, /* compressible= */ true),
env_->GetIntField(s, count_fid));
jchars = env_->GetStringChars(s, nullptr);
EXPECT_EQ(mirror::kUseStringCompression ? '?' : '\x40', jchars[0]);
for (size_t pos = 1; pos != kPageSize - 4u; ++pos) {
ASSERT_EQ('x', jchars[pos]) << pos;
}
EXPECT_EQ('?', jchars[kPageSize - 4u]);
env_->ReleaseStringChars(s, jchars);
// Replace the last two characters with a valid two-byte sequence that decodes as 0.
utf_src[kPageSize - 3u] = '\xc0';
utf_src[kPageSize - 2u] = '\x80';
s = base_env->NewStringUTF(env_, utf_src);
ASSERT_EQ(mirror::String::GetFlaggedCount(kPageSize - 4u, /* compressible= */ false),
env_->GetIntField(s, count_fid));
jchars = env_->GetStringChars(s, nullptr);
EXPECT_EQ(mirror::kUseStringCompression ? '?' : '\x40', jchars[0]);
for (size_t pos = 1; pos != kPageSize - 5u; ++pos) {
ASSERT_EQ('x', jchars[pos]) << pos;
}
EXPECT_EQ('\0', jchars[kPageSize - 5u]);
env_->ReleaseStringChars(s, jchars);
}
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;
bool old_check_jni = vm_->SetCheckJniEnabled(false);
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");
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
env_->NewString(nullptr, -1);
jni_abort_catcher.Check("negative jsize: -1");
env_->NewString(nullptr, std::numeric_limits<jint>::min());
jni_abort_catcher.Check("negative jsize: -2147483648");
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
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_);
// Regression test against integer overflow in range check.
env_->GetStringRegion(s, 0x7fffffff, 0x7fffffff, 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 null 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_);
// Regression test against integer overflow in range check.
env_->GetStringUTFRegion(s, 0x7fffffff, 0x7fffffff, 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 null 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 null jstring is ignored normally, but caught by -Xcheck:jni.
bool old_check_jni = vm_->SetCheckJniEnabled(false);
{
CheckJniAbortCatcher check_jni_abort_catcher;
EXPECT_EQ(env_->GetStringUTFChars(nullptr, nullptr), nullptr);
}
{
CheckJniAbortCatcher check_jni_abort_catcher;
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
EXPECT_EQ(env_->GetStringUTFChars(nullptr, nullptr), nullptr);
check_jni_abort_catcher.Check("GetStringUTFChars received NULL jstring");
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
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_);
ObjPtr<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)) {
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);
if (mirror::kUseStringCompression) {
// is_copy has to be JNI_TRUE because "hello" is all-ASCII
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_->ReleaseStringCritical(s, chars);
if (mirror::kUseStringCompression) {
// is_copy has to be JNI_FALSE because "\xed\xa0\x81\xed\xb0\x80" is incompressible
jboolean is_copy_16 = JNI_TRUE;
jstring s_16 = env_->NewStringUTF("\xed\xa0\x81\xed\xb0\x80");
chars = env_->GetStringCritical(s_16, &is_copy_16);
EXPECT_EQ(2, env_->GetStringLength(s_16));
EXPECT_EQ(4, env_->GetStringUTFLength(s_16));
env_->ReleaseStringCritical(s_16, 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;
bool old_check_jni = vm_->SetCheckJniEnabled(false);
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");
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
EXPECT_EQ(nullptr, env_->GetObjectArrayElement(nullptr, 0));
jni_abort_catcher.Check("jarray was NULL");
env_->SetObjectArrayElement(nullptr, 0, nullptr);
jni_abort_catcher.Check("jarray was NULL");
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
#define EXPECT_STATIC_PRIMITIVE_FIELD(expect_eq, 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)); \
\
bool old_check_jni = vm_->SetCheckJniEnabled(false); \
{ \
CheckJniAbortCatcher jni_abort_catcher; \
env_->GetStatic ## type ## Field(nullptr, fid); \
env_->SetStatic ## type ## Field(nullptr, fid, value1); \
} \
CheckJniAbortCatcher jni_abort_catcher; \
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"); \
\
EXPECT_FALSE(vm_->SetCheckJniEnabled(true)); \
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("jfieldID was NULL"); \
env_->SetStatic ## type ## Field(c, nullptr, value1); \
jni_abort_catcher.Check("jfieldID was NULL"); \
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni)); \
} while (false)
#define EXPECT_PRIMITIVE_FIELD(expect_eq, 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)); \
\
bool old_check_jni = vm_->SetCheckJniEnabled(false); \
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"); \
EXPECT_FALSE(vm_->SetCheckJniEnabled(true)); \
env_->Get ## type ## Field(nullptr, fid); \
jni_abort_catcher.Check("field operation on NULL object:"); \
env_->Set ## type ## Field(nullptr, fid, value1); \
jni_abort_catcher.Check("field operation on NULL object:"); \
env_->Get ## type ## Field(instance, nullptr); \
jni_abort_catcher.Check("jfieldID was NULL"); \
env_->Set ## type ## Field(instance, nullptr, value1); \
jni_abort_catcher.Check("jfieldID was NULL"); \
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni)); \
} while (false)
#define TEST_PRIMITIVE_FIELD_FOR_CLASS(cname) \
do { \
Thread::Current()->TransitionFromSuspendedToRunnable(); \
LoadDex("AllFields"); \
bool started = runtime_->Start(); \
ASSERT_TRUE(started); \
jclass c = env_->FindClass(cname); \
ASSERT_NE(c, nullptr); \
jobject o = env_->AllocObject(c); \
ASSERT_NE(o, nullptr); \
\
EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Boolean, "sZ", "Z", JNI_TRUE, JNI_FALSE); \
EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Byte, "sB", "B", 1, 2); \
EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Char, "sC", "C", 'a', 'b'); \
EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_DOUBLE_EQ, Double, "sD", "D", 1.0, 2.0); \
EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_FLOAT_EQ, Float, "sF", "F", 1.0, 2.0); \
EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Int, "sI", "I", 1, 2); \
EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Long, "sJ", "J", 1, 2); \
EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Short, "sS", "S", 1, 2); \
\
EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Boolean, "iZ", "Z", JNI_TRUE, JNI_FALSE); \
EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Byte, "iB", "B", 1, 2); \
EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Char, "iC", "C", 'a', 'b'); \
EXPECT_PRIMITIVE_FIELD(EXPECT_DOUBLE_EQ, o, Double, "iD", "D", 1.0, 2.0); \
EXPECT_PRIMITIVE_FIELD(EXPECT_FLOAT_EQ, o, Float, "iF", "F", 1.0, 2.0); \
EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Int, "iI", "I", 1, 2); \
EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Long, "iJ", "J", 1, 2); \
EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Short, "iS", "S", 1, 2); \
} while (false)
TEST_F(JniInternalTest, GetPrimitiveField_SetPrimitiveField) {
TEST_PRIMITIVE_FIELD_FOR_CLASS("AllFields");
}
TEST_F(JniInternalTest, GetPrimitiveField_SetPrimitiveField_Subclass) {
TEST_PRIMITIVE_FIELD_FOR_CLASS("AllFieldsSub");
}
#define EXPECT_UNRELATED_FIELD_FAILURE(type, field_name, sig, value1) \
do { \
jfieldID fid = env_->GetStaticFieldID(c, field_name, sig); \
EXPECT_NE(fid, nullptr); \
CheckJniAbortCatcher jni_abort_catcher; \
env_->Get ## type ## Field(uc, fid); \
jni_abort_catcher.Check("not valid for an object of class"); \
env_->Set ## type ## Field(uc, fid, value1); \
jni_abort_catcher.Check("not valid for an object of class"); \
} while (false)
TEST_F(JniInternalTest, GetField_SetField_unrelated) {
Thread::Current()->TransitionFromSuspendedToRunnable();
LoadDex("AllFields");
bool started = runtime_->Start();
ASSERT_TRUE(started);
jclass c = env_->FindClass("AllFields");
ASSERT_NE(c, nullptr);
jclass uc = env_->FindClass("AllFieldsUnrelated");
ASSERT_NE(uc, nullptr);
bool old_check_jni = vm_->SetCheckJniEnabled(true);
EXPECT_UNRELATED_FIELD_FAILURE(Boolean, "sZ", "Z", JNI_TRUE);
EXPECT_UNRELATED_FIELD_FAILURE(Byte, "sB", "B", 1);
EXPECT_UNRELATED_FIELD_FAILURE(Char, "sC", "C", 'a');
EXPECT_UNRELATED_FIELD_FAILURE(Double, "sD", "D", 1.0);
EXPECT_UNRELATED_FIELD_FAILURE(Float, "sF", "F", 1.0);
EXPECT_UNRELATED_FIELD_FAILURE(Int, "sI", "I", 1);
EXPECT_UNRELATED_FIELD_FAILURE(Long, "sJ", "J", 1);
EXPECT_UNRELATED_FIELD_FAILURE(Short, "sS", "S", 1);
EXPECT_UNRELATED_FIELD_FAILURE(Object, "sObject", "Ljava/lang/Object;", c);
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
#define TEST_OBJECT_FIELD_FOR_CLASS(cname) \
do { \
Thread::Current()->TransitionFromSuspendedToRunnable(); \
LoadDex("AllFields"); \
runtime_->Start(); \
\
jclass c = env_->FindClass(cname); \
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))); \
} while (false)
TEST_F(JniInternalTest, GetObjectField_SetObjectField) {
TEST_OBJECT_FIELD_FOR_CLASS("AllFields");
}
TEST_F(JniInternalTest, GetObjectField_SetObjectField_subclass) {
TEST_OBJECT_FIELD_FOR_CLASS("AllFieldsSub");
}
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) {
// This tests leads to warnings and errors in the log.
ScopedLogSeverity sls(LogSeverity::FATAL);
jstring s = env_->NewStringUTF("");
ASSERT_NE(s, nullptr);
env_->DeleteLocalRef(s);
// Currently, deleting an already-deleted reference is just a CheckJNI warning.
{
bool old_check_jni = vm_->SetCheckJniEnabled(false);
{
CheckJniAbortCatcher check_jni_abort_catcher;
env_->DeleteLocalRef(s);
}
CheckJniAbortCatcher check_jni_abort_catcher;
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
env_->DeleteLocalRef(s);
std::string expected(StringPrintf("use of deleted local reference %p", s));
check_jni_abort_catcher.Check(expected.c_str());
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
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);
// The following two tests will print errors to the log.
ScopedLogSeverity sls(LogSeverity::FATAL);
// Negative capacities are not allowed.
ASSERT_EQ(JNI_ERR, env_->PushLocalFrame(-1));
}
TEST_F(JniInternalTest, PushLocalFrame_PopLocalFrame) {
// This tests leads to errors in the log.
ScopedLogSeverity sls(LogSeverity::FATAL);
jobject original = env_->NewStringUTF("");
ASSERT_NE(original, nullptr);
jobject outer;
jobject inner1, inner2;
ScopedObjectAccess soa(env_);
{
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");
EXPECT_NE(env_->PopLocalFrame(inner2), nullptr);
}
EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(original));
EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(outer));
{
CheckJniAbortCatcher check_jni_abort_catcher;
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner1));
check_jni_abort_catcher.Check("use of deleted local reference");
}
// Our local reference for the survivor is invalid because the survivor
// gets a new local reference...
{
CheckJniAbortCatcher check_jni_abort_catcher;
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner2));
check_jni_abort_catcher.Check("use of deleted local reference");
}
EXPECT_EQ(env_->PopLocalFrame(nullptr), nullptr);
}
EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(original));
CheckJniAbortCatcher check_jni_abort_catcher;
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(outer));
check_jni_abort_catcher.Check("use of deleted local reference");
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner1));
check_jni_abort_catcher.Check("use of deleted local reference");
EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner2));
check_jni_abort_catcher.Check("use of deleted local reference");
}
TEST_F(JniInternalTest, PushLocalFrame_LimitAndOverflow) {
// Try a very large value that should fail.
ASSERT_NE(JNI_OK, env_->PushLocalFrame(std::numeric_limits<jint>::max()));
ASSERT_TRUE(env_->ExceptionCheck());
env_->ExceptionClear();
// On 32-bit, also check for some overflow conditions.
#ifndef __LP64__
ASSERT_EQ(JNI_OK, env_->PushLocalFrame(10));
ASSERT_NE(JNI_OK, env_->PushLocalFrame(std::numeric_limits<jint>::max() - 10));
ASSERT_TRUE(env_->ExceptionCheck());
env_->ExceptionClear();
EXPECT_EQ(env_->PopLocalFrame(nullptr), nullptr);
#endif
}
TEST_F(JniInternalTest, PushLocalFrame_b62223672) {
// The 512 entry limit has been lifted, try a larger value.
ASSERT_EQ(JNI_OK, env_->PushLocalFrame(1024));
EXPECT_EQ(env_->PopLocalFrame(nullptr), nullptr);
}
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) {
// This tests leads to warnings and errors in the log.
ScopedLogSeverity sls(LogSeverity::FATAL);
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.
{
bool old_check_jni = vm_->SetCheckJniEnabled(false);
{
CheckJniAbortCatcher check_jni_abort_catcher;
env_->DeleteGlobalRef(o);
}
CheckJniAbortCatcher check_jni_abort_catcher;
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
env_->DeleteGlobalRef(o);
std::string expected(StringPrintf("use of deleted global reference %p", o));
check_jni_abort_catcher.Check(expected.c_str());
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
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) {
// This tests leads to warnings and errors in the log.
ScopedLogSeverity sls(LogSeverity::FATAL);
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.
{
bool old_check_jni = vm_->SetCheckJniEnabled(false);
{
CheckJniAbortCatcher check_jni_abort_catcher;
env_->DeleteWeakGlobalRef(o);
}
CheckJniAbortCatcher check_jni_abort_catcher;
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
env_->DeleteWeakGlobalRef(o);
std::string expected(StringPrintf("use of deleted weak global reference %p", o));
check_jni_abort_catcher.Check(expected.c_str());
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
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) {
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));
// Bad argument.
bool old_check_jni = vm_->SetCheckJniEnabled(false);
EXPECT_EQ(JNI_ERR, env_->Throw(nullptr));
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
CheckJniAbortCatcher check_jni_abort_catcher;
EXPECT_EQ(JNI_ERR, env_->Throw(nullptr));
check_jni_abort_catcher.Check("Throw received NULL jthrowable");
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
TEST_F(JniInternalTest, ThrowNew) {
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));
// Bad argument.
bool old_check_jni = vm_->SetCheckJniEnabled(false);
CheckJniAbortCatcher check_jni_abort_catcher;
EXPECT_EQ(JNI_ERR, env_->ThrowNew(nullptr, nullptr));
check_jni_abort_catcher.Check("c == null");
EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
EXPECT_EQ(JNI_ERR, env_->ThrowNew(nullptr, nullptr));
check_jni_abort_catcher.Check("ThrowNew received NULL jclass");
EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
}
TEST_F(JniInternalTest, NewDirectBuffer_GetDirectBufferAddress_GetDirectBufferCapacity) {
// Start runtime.
Thread* self = Thread::Current();
self->TransitionFromSuspendedToRunnable();
MakeInterpreted(class_linker_->FindSystemClass(self, "Ljava/lang/Class;"));
MakeInterpreted(class_linker_->FindSystemClass(self, "Ljava/lang/Object;"));
MakeInterpreted(class_linker_->FindSystemClass(self, "Ljava/nio/DirectByteBuffer;"));
MakeInterpreted(class_linker_->FindSystemClass(self, "Ljava/nio/Bits;"));
MakeInterpreted(class_linker_->FindSystemClass(self, "Ljava/nio/MappedByteBuffer;"));
MakeInterpreted(class_linker_->FindSystemClass(self, "Ljava/nio/ByteBuffer;"));
MakeInterpreted(class_linker_->FindSystemClass(self, "Ljava/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) {
// This will print some error messages. Suppress.
ScopedLogSeverity sls(LogSeverity::FATAL);
// 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 null.
{
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");
}
}
void Java_MyClassNatives_foo_exit(JNIEnv* env, jobject thisObj) {
// Release the monitor on self. This should trigger an abort.
env->MonitorExit(thisObj);
}
TEST_F(JniInternalTest, MonitorExitLockedInDifferentCall) {
SetUpForTest(false, "foo", "()V", reinterpret_cast<void*>(&Java_MyClassNatives_foo_exit));
ASSERT_NE(jobj_, nullptr);
env_->MonitorEnter(jobj_);
EXPECT_FALSE(env_->ExceptionCheck());
CheckJniAbortCatcher check_jni_abort_catcher;
env_->CallNonvirtualVoidMethod(jobj_, jklass_, jmethod_);
check_jni_abort_catcher.Check("Unlocking monitor that wasn't locked here");
}
void Java_MyClassNatives_foo_enter_no_exit(JNIEnv* env, jobject thisObj) {
// Acquire but don't release the monitor on self. This should trigger an abort on return.
env->MonitorEnter(thisObj);
}
TEST_F(JniInternalTest, MonitorExitNotAllUnlocked) {
SetUpForTest(false,
"foo",
"()V",
reinterpret_cast<void*>(&Java_MyClassNatives_foo_enter_no_exit));
ASSERT_NE(jobj_, nullptr);
CheckJniAbortCatcher check_jni_abort_catcher;
env_->CallNonvirtualVoidMethod(jobj_, jklass_, jmethod_);
check_jni_abort_catcher.Check("Still holding a locked object on JNI end");
}
static bool IsLocked(JNIEnv* env, jobject jobj) {
ScopedObjectAccess soa(env);
LockWord lock_word = soa.Decode<mirror::Object>(jobj)->GetLockWord(true);
switch (lock_word.GetState()) {
case LockWord::kHashCode:
case LockWord::kUnlocked:
return false;
case LockWord::kThinLocked:
return true;
case LockWord::kFatLocked:
return lock_word.FatLockMonitor()->IsLocked();
default: {
LOG(FATAL) << "Invalid monitor state " << lock_word.GetState();
UNREACHABLE();
}
}
}
TEST_F(JniInternalTest, DetachThreadUnlockJNIMonitors) {
// We need to lock an object, detach, reattach, and check the locks.
//
// As re-attaching will create a different thread, we need to use a global
// ref to keep the object around.
// Create an object to torture.
jobject global_ref;
{
jclass object_class = env_->FindClass("java/lang/Object");
ASSERT_NE(object_class, nullptr);
jobject object = env_->AllocObject(object_class);
ASSERT_NE(object, nullptr);
global_ref = env_->NewGlobalRef(object);
}
// Lock it.
env_->MonitorEnter(global_ref);
ASSERT_TRUE(IsLocked(env_, global_ref));
// Detach and re-attach.
jint detach_result = vm_->DetachCurrentThread();
ASSERT_EQ(detach_result, JNI_OK);
jint attach_result = vm_->AttachCurrentThread(&env_, nullptr);
ASSERT_EQ(attach_result, JNI_OK);
// Look at the global ref, check whether it's still locked.
ASSERT_FALSE(IsLocked(env_, global_ref));
// Delete the global ref.
env_->DeleteGlobalRef(global_ref);
}
// Test the offset computation of IndirectReferenceTable offsets. b/26071368.
TEST_F(JniInternalTest, IndirectReferenceTableOffsets) {
// The segment_state_ field is private, and we want to avoid friend declaration. So we'll check
// by modifying memory.
// The parameters don't really matter here.
std::string error_msg;
IndirectReferenceTable irt(5,
IndirectRefKind::kGlobal,
IndirectReferenceTable::ResizableCapacity::kNo,
&error_msg);
ASSERT_TRUE(irt.IsValid()) << error_msg;
IRTSegmentState old_state = irt.GetSegmentState();
// Write some new state directly. We invert parts of old_state to ensure a new value.
IRTSegmentState new_state;
new_state.top_index = old_state.top_index ^ 0x07705005;
ASSERT_NE(old_state.top_index, new_state.top_index);
uint8_t* base = reinterpret_cast<uint8_t*>(&irt);
int32_t segment_state_offset =
IndirectReferenceTable::SegmentStateOffset(sizeof(void*)).Int32Value();
*reinterpret_cast<IRTSegmentState*>(base + segment_state_offset) = new_state;
// Read and compare.
EXPECT_EQ(new_state.top_index, irt.GetSegmentState().top_index);
}
// Test the offset computation of JNIEnvExt offsets. b/26071368.
TEST_F(JniInternalTest, JNIEnvExtOffsets) {
EXPECT_EQ(OFFSETOF_MEMBER(JNIEnvExt, local_ref_cookie_),
JNIEnvExt::LocalRefCookieOffset(sizeof(void*)).Uint32Value());
EXPECT_EQ(OFFSETOF_MEMBER(JNIEnvExt, self_), JNIEnvExt::SelfOffset(sizeof(void*)).Uint32Value());
// segment_state_ is private in the IndirectReferenceTable. So this test isn't as good as we'd
// hope it to be.
uint32_t segment_state_now =
OFFSETOF_MEMBER(JNIEnvExt, locals_) +
IndirectReferenceTable::SegmentStateOffset(sizeof(void*)).Uint32Value();
uint32_t segment_state_computed = JNIEnvExt::SegmentStateOffset(sizeof(void*)).Uint32Value();
EXPECT_EQ(segment_state_now, segment_state_computed);
}
static size_t gGlobalRefCount = 0;
static const JNINativeInterface* gOriginalEnv = nullptr;
static jobject CountNewGlobalRef(JNIEnv* env, jobject o) {
++gGlobalRefCount;
return gOriginalEnv->NewGlobalRef(env, o);
}
// Test the table override.
TEST_F(JniInternalTest, JNIEnvExtTableOverride) {
JNINativeInterface env_override;
memcpy(&env_override, env_->functions, sizeof(JNINativeInterface));
gOriginalEnv = env_->functions;
env_override.NewGlobalRef = CountNewGlobalRef;
gGlobalRefCount = 0;
jclass local = env_->FindClass("java/lang/Object");
ASSERT_TRUE(local != nullptr);
// Set the table, add a global ref, see whether the counter increases.
JNIEnvExt::SetTableOverride(&env_override);
jobject global = env_->NewGlobalRef(local);
EXPECT_EQ(1u, gGlobalRefCount);
env_->DeleteGlobalRef(global);
// Reset
JNIEnvExt::SetTableOverride(nullptr);
jobject global2 = env_->NewGlobalRef(local);
EXPECT_EQ(1u, gGlobalRefCount);
env_->DeleteGlobalRef(global2);
}
TEST_F(JniInternalTest, NonAttachedThread) {
// This tests leads to warnings and errors in the log.
ScopedLogSeverity sls(LogSeverity::FATAL);
CheckJniAbortCatcher check_jni_abort_catcher;
auto callee = [](void* env_ptr) -> void* {
JNIEnv* env = reinterpret_cast<JNIEnv*>(env_ptr);
env->NewStringUTF("test");
return nullptr;
};
bool old_check_jni = vm_->SetCheckJniEnabled(false);
vm_->SetCheckJniEnabled(true);
{
pthread_t pthread;
int pthread_create_result = pthread_create(&pthread,
/* pthread_attr */ nullptr,
callee,
reinterpret_cast<void*>(env_));
CHECK_EQ(pthread_create_result, 0);
int pthread_join_result = pthread_join(pthread, /* thread_return */ nullptr);
CHECK_EQ(pthread_join_result, 0);
}
vm_->SetCheckJniEnabled(old_check_jni);
check_jni_abort_catcher.Check("is making JNI calls without being attached");
}
} // namespace art