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gerrit-public.fairphone.software / platform / art / b23cecb43b71813b5c8ca1a21c4b85bcedfad8ae / . / runtime / jni_internal.cc
blob: cb67ee3b3938f7168e78642fad4bc77cbd691b29 [file] [log] [blame]
/*
* 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 <dlfcn.h>
#include <cstdarg>
#include <memory>
#include <utility>
#include <vector>
#include "art_field-inl.h"
#include "art_method-inl.h"
#include "atomic.h"
#include "base/allocator.h"
#include "base/logging.h"
#include "base/mutex.h"
#include "base/stl_util.h"
#include "class_linker-inl.h"
#include "dex_file-inl.h"
#include "fault_handler.h"
#include "gc_root.h"
#include "gc/accounting/card_table-inl.h"
#include "indirect_reference_table-inl.h"
#include "interpreter/interpreter.h"
#include "jni_env_ext.h"
#include "java_vm_ext.h"
#include "mirror/class-inl.h"
#include "mirror/class_loader.h"
#include "mirror/field-inl.h"
#include "mirror/method.h"
#include "mirror/object-inl.h"
#include "mirror/object_array-inl.h"
#include "mirror/string-inl.h"
#include "mirror/throwable.h"
#include "parsed_options.h"
#include "reflection.h"
#include "runtime.h"
#include "safe_map.h"
#include "scoped_thread_state_change.h"
#include "ScopedLocalRef.h"
#include "thread.h"
#include "utf.h"
#include "well_known_classes.h"
namespace art {
// Consider turning this on when there is errors which could be related to JNI array copies such as
// things not rendering correctly. E.g. b/16858794
static constexpr bool kWarnJniAbort = false;
// Section 12.3.2 of the JNI spec describes JNI class descriptors. They're
// separated with slashes but aren't wrapped with "L;" like regular descriptors
// (i.e. "a/b/C" rather than "La/b/C;"). Arrays of reference types are an
// exception; there the "L;" must be present ("[La/b/C;"). Historically we've
// supported names with dots too (such as "a.b.C").
static std::string NormalizeJniClassDescriptor(const char* name) {
std::string result;
// Add the missing "L;" if necessary.
if (name[0] == '[') {
result = name;
} else {
result += 'L';
result += name;
result += ';';
}
// Rewrite '.' as '/' for backwards compatibility.
if (result.find('.') != std::string::npos) {
LOG(WARNING) << "Call to JNI FindClass with dots in name: "
<< "\"" << name << "\"";
std::replace(result.begin(), result.end(), '.', '/');
}
return result;
}
static void ThrowNoSuchMethodError(ScopedObjectAccess& soa, mirror::Class* c,
const char* name, const char* sig, const char* kind)
SHARED_REQUIRES(Locks::mutator_lock_) {
std::string temp;
soa.Self()->ThrowNewExceptionF("Ljava/lang/NoSuchMethodError;",
"no %s method \"%s.%s%s\"",
kind, c->GetDescriptor(&temp), name, sig);
}
static void ReportInvalidJNINativeMethod(const ScopedObjectAccess& soa, mirror::Class* c,
const char* kind, jint idx, bool return_errors)
SHARED_REQUIRES(Locks::mutator_lock_) {
LOG(return_errors ? ERROR : FATAL) << "Failed to register native method in "
<< PrettyDescriptor(c) << " in " << c->GetDexCache()->GetLocation()->ToModifiedUtf8()
<< ": " << kind << " is null at index " << idx;
soa.Self()->ThrowNewExceptionF("Ljava/lang/NoSuchMethodError;",
"%s is null at index %d", kind, idx);
}
static mirror::Class* EnsureInitialized(Thread* self, mirror::Class* klass)
SHARED_REQUIRES(Locks::mutator_lock_) {
if (LIKELY(klass->IsInitialized())) {
return klass;
}
StackHandleScope<1> hs(self);
Handle<mirror::Class> h_klass(hs.NewHandle(klass));
if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(self, h_klass, true, true)) {
return nullptr;
}
return h_klass.Get();
}
static jmethodID FindMethodID(ScopedObjectAccess& soa, jclass jni_class,
const char* name, const char* sig, bool is_static)
SHARED_REQUIRES(Locks::mutator_lock_) {
mirror::Class* c = EnsureInitialized(soa.Self(), soa.Decode<mirror::Class*>(jni_class));
if (c == nullptr) {
return nullptr;
}
ArtMethod* method = nullptr;
auto pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize();
if (is_static) {
method = c->FindDirectMethod(name, sig, pointer_size);
} else if (c->IsInterface()) {
method = c->FindInterfaceMethod(name, sig, pointer_size);
} else {
method = c->FindVirtualMethod(name, sig, pointer_size);
if (method == nullptr) {
// No virtual method matching the signature. Search declared
// private methods and constructors.
method = c->FindDeclaredDirectMethod(name, sig, pointer_size);
}
}
if (method == nullptr || method->IsStatic() != is_static) {
ThrowNoSuchMethodError(soa, c, name, sig, is_static ? "static" : "non-static");
return nullptr;
}
return soa.EncodeMethod(method);
}
static mirror::ClassLoader* GetClassLoader(const ScopedObjectAccess& soa)
SHARED_REQUIRES(Locks::mutator_lock_) {
ArtMethod* method = soa.Self()->GetCurrentMethod(nullptr);
// If we are running Runtime.nativeLoad, use the overriding ClassLoader it set.
if (method == soa.DecodeMethod(WellKnownClasses::java_lang_Runtime_nativeLoad)) {
return soa.Decode<mirror::ClassLoader*>(soa.Self()->GetClassLoaderOverride());
}
// If we have a method, use its ClassLoader for context.
if (method != nullptr) {
return method->GetDeclaringClass()->GetClassLoader();
}
// We don't have a method, so try to use the system ClassLoader.
mirror::ClassLoader* class_loader =
soa.Decode<mirror::ClassLoader*>(Runtime::Current()->GetSystemClassLoader());
if (class_loader != nullptr) {
return class_loader;
}
// See if the override ClassLoader is set for gtests.
class_loader = soa.Decode<mirror::ClassLoader*>(soa.Self()->GetClassLoaderOverride());
if (class_loader != nullptr) {
// If so, CommonCompilerTest should have marked the runtime as a compiler not compiling an
// image.
CHECK(Runtime::Current()->IsAotCompiler());
CHECK(!Runtime::Current()->IsCompilingBootImage());
return class_loader;
}
// Use the BOOTCLASSPATH.
return nullptr;
}
static jfieldID FindFieldID(const ScopedObjectAccess& soa, jclass jni_class, const char* name,
const char* sig, bool is_static)
SHARED_REQUIRES(Locks::mutator_lock_) {
StackHandleScope<2> hs(soa.Self());
Handle<mirror::Class> c(
hs.NewHandle(EnsureInitialized(soa.Self(), soa.Decode<mirror::Class*>(jni_class))));
if (c.Get() == nullptr) {
return nullptr;
}
ArtField* field = nullptr;
mirror::Class* field_type;
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
if (sig[1] != '\0') {
Handle<mirror::ClassLoader> class_loader(hs.NewHandle(c->GetClassLoader()));
field_type = class_linker->FindClass(soa.Self(), sig, class_loader);
} else {
field_type = class_linker->FindPrimitiveClass(*sig);
}
if (field_type == nullptr) {
// Failed to find type from the signature of the field.
DCHECK(soa.Self()->IsExceptionPending());
StackHandleScope<1> hs2(soa.Self());
Handle<mirror::Throwable> cause(hs2.NewHandle(soa.Self()->GetException()));
soa.Self()->ClearException();
std::string temp;
soa.Self()->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;",
"no type \"%s\" found and so no field \"%s\" "
"could be found in class \"%s\" or its superclasses", sig, name,
c->GetDescriptor(&temp));
soa.Self()->GetException()->SetCause(cause.Get());
return nullptr;
}
std::string temp;
if (is_static) {
field = mirror::Class::FindStaticField(soa.Self(), c, name,
field_type->GetDescriptor(&temp));
} else {
field = c->FindInstanceField(name, field_type->GetDescriptor(&temp));
}
if (field == nullptr) {
soa.Self()->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;",
"no \"%s\" field \"%s\" in class \"%s\" or its superclasses",
sig, name, c->GetDescriptor(&temp));
return nullptr;
}
return soa.EncodeField(field);
}
static void ThrowAIOOBE(ScopedObjectAccess& soa, mirror::Array* array, jsize start,
jsize length, const char* identifier)
SHARED_REQUIRES(Locks::mutator_lock_) {
std::string type(PrettyTypeOf(array));
soa.Self()->ThrowNewExceptionF("Ljava/lang/ArrayIndexOutOfBoundsException;",
"%s offset=%d length=%d %s.length=%d",
type.c_str(), start, length, identifier, array->GetLength());
}
static void ThrowSIOOBE(ScopedObjectAccess& soa, jsize start, jsize length,
jsize array_length)
SHARED_REQUIRES(Locks::mutator_lock_) {
soa.Self()->ThrowNewExceptionF("Ljava/lang/StringIndexOutOfBoundsException;",
"offset=%d length=%d string.length()=%d", start, length,
array_length);
}
int ThrowNewException(JNIEnv* env, jclass exception_class, const char* msg, jobject cause)
REQUIRES(!Locks::mutator_lock_) {
// Turn the const char* into a java.lang.String.
ScopedLocalRef<jstring> s(env, env->NewStringUTF(msg));
if (msg != nullptr && s.get() == nullptr) {
return JNI_ERR;
}
// Choose an appropriate constructor and set up the arguments.
jvalue args[2];
const char* signature;
if (msg == nullptr && cause == nullptr) {
signature = "()V";
} else if (msg != nullptr && cause == nullptr) {
signature = "(Ljava/lang/String;)V";
args[0].l = s.get();
} else if (msg == nullptr && cause != nullptr) {
signature = "(Ljava/lang/Throwable;)V";
args[0].l = cause;
} else {
signature = "(Ljava/lang/String;Ljava/lang/Throwable;)V";
args[0].l = s.get();
args[1].l = cause;
}
jmethodID mid = env->GetMethodID(exception_class, "<init>", signature);
if (mid == nullptr) {
ScopedObjectAccess soa(env);
LOG(ERROR) << "No <init>" << signature << " in "
<< PrettyClass(soa.Decode<mirror::Class*>(exception_class));
return JNI_ERR;
}
ScopedLocalRef<jthrowable> exception(
env, reinterpret_cast<jthrowable>(env->NewObjectA(exception_class, mid, args)));
if (exception.get() == nullptr) {
return JNI_ERR;
}
ScopedObjectAccess soa(env);
soa.Self()->SetException(soa.Decode<mirror::Throwable*>(exception.get()));
return JNI_OK;
}
static JavaVMExt* JavaVmExtFromEnv(JNIEnv* env) {
return reinterpret_cast<JNIEnvExt*>(env)->vm;
}
#define CHECK_NON_NULL_ARGUMENT(value) \
CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, nullptr)
#define CHECK_NON_NULL_ARGUMENT_RETURN_VOID(value) \
CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, )
#define CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(value) \
CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, 0)
#define CHECK_NON_NULL_ARGUMENT_RETURN(value, return_val) \
CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, return_val)
#define CHECK_NON_NULL_ARGUMENT_FN_NAME(name, value, return_val) \
if (UNLIKELY(value == nullptr)) { \
JavaVmExtFromEnv(env)->JniAbortF(name, #value " == null"); \
return return_val; \
}
#define CHECK_NON_NULL_MEMCPY_ARGUMENT(length, value) \
if (UNLIKELY(length != 0 && value == nullptr)) { \
JavaVmExtFromEnv(env)->JniAbortF(__FUNCTION__, #value " == null"); \
return; \
}
template <bool kNative>
static ArtMethod* FindMethod(mirror::Class* c, const StringPiece& name, const StringPiece& sig)
SHARED_REQUIRES(Locks::mutator_lock_) {
auto pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize();
for (auto& method : c->GetMethods(pointer_size)) {
if (kNative == method.IsNative() && name == method.GetName() && method.GetSignature() == sig) {
return &method;
}
}
return nullptr;
}
class JNI {
public:
static jint GetVersion(JNIEnv*) {
return JNI_VERSION_1_6;
}
static jclass DefineClass(JNIEnv*, const char*, jobject, const jbyte*, jsize) {
LOG(WARNING) << "JNI DefineClass is not supported";
return nullptr;
}
static jclass FindClass(JNIEnv* env, const char* name) {
CHECK_NON_NULL_ARGUMENT(name);
Runtime* runtime = Runtime::Current();
ClassLinker* class_linker = runtime->GetClassLinker();
std::string descriptor(NormalizeJniClassDescriptor(name));
ScopedObjectAccess soa(env);
mirror::Class* c = nullptr;
if (runtime->IsStarted()) {
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(hs.NewHandle(GetClassLoader(soa)));
c = class_linker->FindClass(soa.Self(), descriptor.c_str(), class_loader);
} else {
c = class_linker->FindSystemClass(soa.Self(), descriptor.c_str());
}
return soa.AddLocalReference<jclass>(c);
}
static jmethodID FromReflectedMethod(JNIEnv* env, jobject jlr_method) {
CHECK_NON_NULL_ARGUMENT(jlr_method);
ScopedObjectAccess soa(env);
return soa.EncodeMethod(ArtMethod::FromReflectedMethod(soa, jlr_method));
}
static jfieldID FromReflectedField(JNIEnv* env, jobject jlr_field) {
CHECK_NON_NULL_ARGUMENT(jlr_field);
ScopedObjectAccess soa(env);
mirror::Object* obj_field = soa.Decode<mirror::Object*>(jlr_field);
if (obj_field->GetClass() != mirror::Field::StaticClass()) {
// Not even a java.lang.reflect.Field, return null. TODO, is this check necessary?
return nullptr;
}
auto* field = static_cast<mirror::Field*>(obj_field);
return soa.EncodeField(field->GetArtField());
}
static jobject ToReflectedMethod(JNIEnv* env, jclass, jmethodID mid, jboolean) {
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
ArtMethod* m = soa.DecodeMethod(mid);
mirror::AbstractMethod* method;
if (m->IsConstructor()) {
method = mirror::Constructor::CreateFromArtMethod(soa.Self(), m);
} else {
method = mirror::Method::CreateFromArtMethod(soa.Self(), m);
}
return soa.AddLocalReference<jobject>(method);
}
static jobject ToReflectedField(JNIEnv* env, jclass, jfieldID fid, jboolean) {
CHECK_NON_NULL_ARGUMENT(fid);
ScopedObjectAccess soa(env);
ArtField* f = soa.DecodeField(fid);
return soa.AddLocalReference<jobject>(mirror::Field::CreateFromArtField(soa.Self(), f, true));
}
static jclass GetObjectClass(JNIEnv* env, jobject java_object) {
CHECK_NON_NULL_ARGUMENT(java_object);
ScopedObjectAccess soa(env);
mirror::Object* o = soa.Decode<mirror::Object*>(java_object);
return soa.AddLocalReference<jclass>(o->GetClass());
}
static jclass GetSuperclass(JNIEnv* env, jclass java_class) {
CHECK_NON_NULL_ARGUMENT(java_class);
ScopedObjectAccess soa(env);
mirror::Class* c = soa.Decode<mirror::Class*>(java_class);
return soa.AddLocalReference<jclass>(c->IsInterface() ? nullptr : c->GetSuperClass());
}
// Note: java_class1 should be safely castable to java_class2, and
// not the other way around.
static jboolean IsAssignableFrom(JNIEnv* env, jclass java_class1, jclass java_class2) {
CHECK_NON_NULL_ARGUMENT_RETURN(java_class1, JNI_FALSE);
CHECK_NON_NULL_ARGUMENT_RETURN(java_class2, JNI_FALSE);
ScopedObjectAccess soa(env);
mirror::Class* c1 = soa.Decode<mirror::Class*>(java_class1);
mirror::Class* c2 = soa.Decode<mirror::Class*>(java_class2);
return c2->IsAssignableFrom(c1) ? JNI_TRUE : JNI_FALSE;
}
static jboolean IsInstanceOf(JNIEnv* env, jobject jobj, jclass java_class) {
CHECK_NON_NULL_ARGUMENT_RETURN(java_class, JNI_FALSE);
if (jobj == nullptr) {
// Note: JNI is different from regular Java instanceof in this respect
return JNI_TRUE;
} else {
ScopedObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(jobj);
mirror::Class* c = soa.Decode<mirror::Class*>(java_class);
return obj->InstanceOf(c) ? JNI_TRUE : JNI_FALSE;
}
}
static jint Throw(JNIEnv* env, jthrowable java_exception) {
ScopedObjectAccess soa(env);
mirror::Throwable* exception = soa.Decode<mirror::Throwable*>(java_exception);
if (exception == nullptr) {
return JNI_ERR;
}
soa.Self()->SetException(exception);
return JNI_OK;
}
static jint ThrowNew(JNIEnv* env, jclass c, const char* msg) {
CHECK_NON_NULL_ARGUMENT_RETURN(c, JNI_ERR);
return ThrowNewException(env, c, msg, nullptr);
}
static jboolean ExceptionCheck(JNIEnv* env) {
return static_cast<JNIEnvExt*>(env)->self->IsExceptionPending() ? JNI_TRUE : JNI_FALSE;
}
static void ExceptionClear(JNIEnv* env) {
ScopedObjectAccess soa(env);
soa.Self()->ClearException();
}
static void ExceptionDescribe(JNIEnv* env) {
ScopedObjectAccess soa(env);
// If we have no exception to describe, pass through.
if (!soa.Self()->GetException()) {
return;
}
StackHandleScope<1> hs(soa.Self());
Handle<mirror::Throwable> old_exception(
hs.NewHandle<mirror::Throwable>(soa.Self()->GetException()));
soa.Self()->ClearException();
ScopedLocalRef<jthrowable> exception(env,
soa.AddLocalReference<jthrowable>(old_exception.Get()));
ScopedLocalRef<jclass> exception_class(env, env->GetObjectClass(exception.get()));
jmethodID mid = env->GetMethodID(exception_class.get(), "printStackTrace", "()V");
if (mid == nullptr) {
LOG(WARNING) << "JNI WARNING: no printStackTrace()V in "
<< PrettyTypeOf(old_exception.Get());
} else {
env->CallVoidMethod(exception.get(), mid);
if (soa.Self()->IsExceptionPending()) {
LOG(WARNING) << "JNI WARNING: " << PrettyTypeOf(soa.Self()->GetException())
<< " thrown while calling printStackTrace";
soa.Self()->ClearException();
}
}
soa.Self()->SetException(old_exception.Get());
}
static jthrowable ExceptionOccurred(JNIEnv* env) {
ScopedObjectAccess soa(env);
mirror::Object* exception = soa.Self()->GetException();
return soa.AddLocalReference<jthrowable>(exception);
}
static void FatalError(JNIEnv*, const char* msg) {
LOG(FATAL) << "JNI FatalError called: " << msg;
}
static jint PushLocalFrame(JNIEnv* env, jint capacity) {
// TODO: SOA may not be necessary but I do it to please lock annotations.
ScopedObjectAccess soa(env);
if (EnsureLocalCapacityInternal(soa, capacity, "PushLocalFrame") != JNI_OK) {
return JNI_ERR;
}
down_cast<JNIEnvExt*>(env)->PushFrame(capacity);
return JNI_OK;
}
static jobject PopLocalFrame(JNIEnv* env, jobject java_survivor) {
ScopedObjectAccess soa(env);
mirror::Object* survivor = soa.Decode<mirror::Object*>(java_survivor);
soa.Env()->PopFrame();
return soa.AddLocalReference<jobject>(survivor);
}
static jint EnsureLocalCapacity(JNIEnv* env, jint desired_capacity) {
// TODO: SOA may not be necessary but I do it to please lock annotations.
ScopedObjectAccess soa(env);
return EnsureLocalCapacityInternal(soa, desired_capacity, "EnsureLocalCapacity");
}
static jobject NewGlobalRef(JNIEnv* env, jobject obj) {
ScopedObjectAccess soa(env);
mirror::Object* decoded_obj = soa.Decode<mirror::Object*>(obj);
return soa.Vm()->AddGlobalRef(soa.Self(), decoded_obj);
}
static void DeleteGlobalRef(JNIEnv* env, jobject obj) {
JavaVMExt* vm = down_cast<JNIEnvExt*>(env)->vm;
Thread* self = down_cast<JNIEnvExt*>(env)->self;
vm->DeleteGlobalRef(self, obj);
}
static jweak NewWeakGlobalRef(JNIEnv* env, jobject obj) {
ScopedObjectAccess soa(env);
mirror::Object* decoded_obj = soa.Decode<mirror::Object*>(obj);
return soa.Vm()->AddWeakGlobalRef(soa.Self(), decoded_obj);
}
static void DeleteWeakGlobalRef(JNIEnv* env, jweak obj) {
JavaVMExt* vm = down_cast<JNIEnvExt*>(env)->vm;
Thread* self = down_cast<JNIEnvExt*>(env)->self;
vm->DeleteWeakGlobalRef(self, obj);
}
static jobject NewLocalRef(JNIEnv* env, jobject obj) {
ScopedObjectAccess soa(env);
mirror::Object* decoded_obj = soa.Decode<mirror::Object*>(obj);
// Check for null after decoding the object to handle cleared weak globals.
if (decoded_obj == nullptr) {
return nullptr;
}
return soa.AddLocalReference<jobject>(decoded_obj);
}
static void DeleteLocalRef(JNIEnv* env, jobject obj) {
if (obj == nullptr) {
return;
}
// SOA is only necessary to have exclusion between GC root marking and removing.
// We don't want to have the GC attempt to mark a null root if we just removed
// it. b/22119403
ScopedObjectAccess soa(env);
auto* ext_env = down_cast<JNIEnvExt*>(env);
if (!ext_env->locals.Remove(ext_env->local_ref_cookie, obj)) {
// Attempting to delete a local reference that is not in the
// topmost local reference frame is a no-op. DeleteLocalRef returns
// void and doesn't throw any exceptions, but we should probably
// complain about it so the user will notice that things aren't
// going quite the way they expect.
LOG(WARNING) << "JNI WARNING: DeleteLocalRef(" << obj << ") "
<< "failed to find entry";
}
}
static jboolean IsSameObject(JNIEnv* env, jobject obj1, jobject obj2) {
if (obj1 == obj2) {
return JNI_TRUE;
} else {
ScopedObjectAccess soa(env);
return (soa.Decode<mirror::Object*>(obj1) == soa.Decode<mirror::Object*>(obj2))
? JNI_TRUE : JNI_FALSE;
}
}
static jobject AllocObject(JNIEnv* env, jclass java_class) {
CHECK_NON_NULL_ARGUMENT(java_class);
ScopedObjectAccess soa(env);
mirror::Class* c = EnsureInitialized(soa.Self(), soa.Decode<mirror::Class*>(java_class));
if (c == nullptr) {
return nullptr;
}
if (c->IsStringClass()) {
gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
mirror::SetStringCountVisitor visitor(0);
return soa.AddLocalReference<jobject>(mirror::String::Alloc<true>(soa.Self(), 0,
allocator_type, visitor));
}
return soa.AddLocalReference<jobject>(c->AllocObject(soa.Self()));
}
static jobject NewObject(JNIEnv* env, jclass java_class, jmethodID mid, ...) {
va_list args;
va_start(args, mid);
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(mid);
jobject result = NewObjectV(env, java_class, mid, args);
va_end(args);
return result;
}
static jobject NewObjectV(JNIEnv* env, jclass java_class, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
mirror::Class* c = EnsureInitialized(soa.Self(), soa.Decode<mirror::Class*>(java_class));
if (c == nullptr) {
return nullptr;
}
if (c->IsStringClass()) {
// Replace calls to String.<init> with equivalent StringFactory call.
jmethodID sf_mid = WellKnownClasses::StringInitToStringFactoryMethodID(mid);
return CallStaticObjectMethodV(env, WellKnownClasses::java_lang_StringFactory, sf_mid, args);
}
mirror::Object* result = c->AllocObject(soa.Self());
if (result == nullptr) {
return nullptr;
}
jobject local_result = soa.AddLocalReference<jobject>(result);
CallNonvirtualVoidMethodV(env, local_result, java_class, mid, args);
if (soa.Self()->IsExceptionPending()) {
return nullptr;
}
return local_result;
}
static jobject NewObjectA(JNIEnv* env, jclass java_class, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
mirror::Class* c = EnsureInitialized(soa.Self(), soa.Decode<mirror::Class*>(java_class));
if (c == nullptr) {
return nullptr;
}
if (c->IsStringClass()) {
// Replace calls to String.<init> with equivalent StringFactory call.
jmethodID sf_mid = WellKnownClasses::StringInitToStringFactoryMethodID(mid);
return CallStaticObjectMethodA(env, WellKnownClasses::java_lang_StringFactory, sf_mid, args);
}
mirror::Object* result = c->AllocObject(soa.Self());
if (result == nullptr) {
return nullptr;
}
jobject local_result = soa.AddLocalReference<jobjectArray>(result);
CallNonvirtualVoidMethodA(env, local_result, java_class, mid, args);
if (soa.Self()->IsExceptionPending()) {
return nullptr;
}
return local_result;
}
static jmethodID GetMethodID(JNIEnv* env, jclass java_class, const char* name, const char* sig) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(name);
CHECK_NON_NULL_ARGUMENT(sig);
ScopedObjectAccess soa(env);
return FindMethodID(soa, java_class, name, sig, false);
}
static jmethodID GetStaticMethodID(JNIEnv* env, jclass java_class, const char* name,
const char* sig) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(name);
CHECK_NON_NULL_ARGUMENT(sig);
ScopedObjectAccess soa(env);
return FindMethodID(soa, java_class, name, sig, true);
}
static jobject CallObjectMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return soa.AddLocalReference<jobject>(result.GetL());
}
static jobject CallObjectMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jobject CallObjectMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jboolean CallBooleanMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetZ();
}
static jboolean CallBooleanMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetZ();
}
static jboolean CallBooleanMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetZ();
}
static jbyte CallByteMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetB();
}
static jbyte CallByteMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetB();
}
static jbyte CallByteMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetB();
}
static jchar CallCharMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetC();
}
static jchar CallCharMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetC();
}
static jchar CallCharMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetC();
}
static jdouble CallDoubleMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetD();
}
static jdouble CallDoubleMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetD();
}
static jdouble CallDoubleMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetD();
}
static jfloat CallFloatMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetF();
}
static jfloat CallFloatMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetF();
}
static jfloat CallFloatMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetF();
}
static jint CallIntMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetI();
}
static jint CallIntMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetI();
}
static jint CallIntMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetI();
}
static jlong CallLongMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetJ();
}
static jlong CallLongMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetJ();
}
static jlong CallLongMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetJ();
}
static jshort CallShortMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetS();
}
static jshort CallShortMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetS();
}
static jshort CallShortMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetS();
}
static void CallVoidMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap);
va_end(ap);
}
static void CallVoidMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args);
}
static void CallVoidMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args);
}
static jobject CallNonvirtualObjectMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
jobject local_result = soa.AddLocalReference<jobject>(result.GetL());
va_end(ap);
return local_result;
}
static jobject CallNonvirtualObjectMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jobject CallNonvirtualObjectMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
jvalue* args) {
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithJValues(soa, obj, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jboolean CallNonvirtualBooleanMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid,
...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetZ();
}
static jboolean CallNonvirtualBooleanMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetZ();
}
static jboolean CallNonvirtualBooleanMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetZ();
}
static jbyte CallNonvirtualByteMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetB();
}
static jbyte CallNonvirtualByteMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetB();
}
static jbyte CallNonvirtualByteMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetB();
}
static jchar CallNonvirtualCharMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetC();
}
static jchar CallNonvirtualCharMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetC();
}
static jchar CallNonvirtualCharMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetC();
}
static jshort CallNonvirtualShortMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetS();
}
static jshort CallNonvirtualShortMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetS();
}
static jshort CallNonvirtualShortMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetS();
}
static jint CallNonvirtualIntMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetI();
}
static jint CallNonvirtualIntMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetI();
}
static jint CallNonvirtualIntMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetI();
}
static jlong CallNonvirtualLongMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetJ();
}
static jlong CallNonvirtualLongMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetJ();
}
static jlong CallNonvirtualLongMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetJ();
}
static jfloat CallNonvirtualFloatMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetF();
}
static jfloat CallNonvirtualFloatMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetF();
}
static jfloat CallNonvirtualFloatMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetF();
}
static jdouble CallNonvirtualDoubleMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
va_end(ap);
return result.GetD();
}
static jdouble CallNonvirtualDoubleMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetD();
}
static jdouble CallNonvirtualDoubleMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetD();
}
static void CallNonvirtualVoidMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithVarArgs(soa, obj, mid, ap);
va_end(ap);
}
static void CallNonvirtualVoidMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithVarArgs(soa, obj, mid, args);
}
static void CallNonvirtualVoidMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithJValues(soa, obj, mid, args);
}
static jfieldID GetFieldID(JNIEnv* env, jclass java_class, const char* name, const char* sig) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(name);
CHECK_NON_NULL_ARGUMENT(sig);
ScopedObjectAccess soa(env);
return FindFieldID(soa, java_class, name, sig, false);
}
static jfieldID GetStaticFieldID(JNIEnv* env, jclass java_class, const char* name,
const char* sig) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(name);
CHECK_NON_NULL_ARGUMENT(sig);
ScopedObjectAccess soa(env);
return FindFieldID(soa, java_class, name, sig, true);
}
static jobject GetObjectField(JNIEnv* env, jobject obj, jfieldID fid) {
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(fid);
ScopedObjectAccess soa(env);
mirror::Object* o = soa.Decode<mirror::Object*>(obj);
ArtField* f = soa.DecodeField(fid);
return soa.AddLocalReference<jobject>(f->GetObject(o));
}
static jobject GetStaticObjectField(JNIEnv* env, jclass, jfieldID fid) {
CHECK_NON_NULL_ARGUMENT(fid);
ScopedObjectAccess soa(env);
ArtField* f = soa.DecodeField(fid);
return soa.AddLocalReference<jobject>(f->GetObject(f->GetDeclaringClass()));
}
static void SetObjectField(JNIEnv* env, jobject java_object, jfieldID fid, jobject java_value) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_object);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid);
ScopedObjectAccess soa(env);
mirror::Object* o = soa.Decode<mirror::Object*>(java_object);
mirror::Object* v = soa.Decode<mirror::Object*>(java_value);
ArtField* f = soa.DecodeField(fid);
f->SetObject<false>(o, v);
}
static void SetStaticObjectField(JNIEnv* env, jclass, jfieldID fid, jobject java_value) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid);
ScopedObjectAccess soa(env);
mirror::Object* v = soa.Decode<mirror::Object*>(java_value);
ArtField* f = soa.DecodeField(fid);
f->SetObject<false>(f->GetDeclaringClass(), v);
}
#define GET_PRIMITIVE_FIELD(fn, instance) \
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(instance); \
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(fid); \
ScopedObjectAccess soa(env); \
mirror::Object* o = soa.Decode<mirror::Object*>(instance); \
ArtField* f = soa.DecodeField(fid); \
return f->Get ##fn (o)
#define GET_STATIC_PRIMITIVE_FIELD(fn) \
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(fid); \
ScopedObjectAccess soa(env); \
ArtField* f = soa.DecodeField(fid); \
return f->Get ##fn (f->GetDeclaringClass())
#define SET_PRIMITIVE_FIELD(fn, instance, value) \
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(instance); \
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid); \
ScopedObjectAccess soa(env); \
mirror::Object* o = soa.Decode<mirror::Object*>(instance); \
ArtField* f = soa.DecodeField(fid); \
f->Set ##fn <false>(o, value)
#define SET_STATIC_PRIMITIVE_FIELD(fn, value) \
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid); \
ScopedObjectAccess soa(env); \
ArtField* f = soa.DecodeField(fid); \
f->Set ##fn <false>(f->GetDeclaringClass(), value)
static jboolean GetBooleanField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Boolean, obj);
}
static jbyte GetByteField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Byte, obj);
}
static jchar GetCharField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Char, obj);
}
static jshort GetShortField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Short, obj);
}
static jint GetIntField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Int, obj);
}
static jlong GetLongField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Long, obj);
}
static jfloat GetFloatField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Float, obj);
}
static jdouble GetDoubleField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Double, obj);
}
static jboolean GetStaticBooleanField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Boolean);
}
static jbyte GetStaticByteField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Byte);
}
static jchar GetStaticCharField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Char);
}
static jshort GetStaticShortField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Short);
}
static jint GetStaticIntField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Int);
}
static jlong GetStaticLongField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Long);
}
static jfloat GetStaticFloatField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Float);
}
static jdouble GetStaticDoubleField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Double);
}
static void SetBooleanField(JNIEnv* env, jobject obj, jfieldID fid, jboolean v) {
SET_PRIMITIVE_FIELD(Boolean, obj, v);
}
static void SetByteField(JNIEnv* env, jobject obj, jfieldID fid, jbyte v) {
SET_PRIMITIVE_FIELD(Byte, obj, v);
}
static void SetCharField(JNIEnv* env, jobject obj, jfieldID fid, jchar v) {
SET_PRIMITIVE_FIELD(Char, obj, v);
}
static void SetFloatField(JNIEnv* env, jobject obj, jfieldID fid, jfloat v) {
SET_PRIMITIVE_FIELD(Float, obj, v);
}
static void SetDoubleField(JNIEnv* env, jobject obj, jfieldID fid, jdouble v) {
SET_PRIMITIVE_FIELD(Double, obj, v);
}
static void SetIntField(JNIEnv* env, jobject obj, jfieldID fid, jint v) {
SET_PRIMITIVE_FIELD(Int, obj, v);
}
static void SetLongField(JNIEnv* env, jobject obj, jfieldID fid, jlong v) {
SET_PRIMITIVE_FIELD(Long, obj, v);
}
static void SetShortField(JNIEnv* env, jobject obj, jfieldID fid, jshort v) {
SET_PRIMITIVE_FIELD(Short, obj, v);
}
static void SetStaticBooleanField(JNIEnv* env, jclass, jfieldID fid, jboolean v) {
SET_STATIC_PRIMITIVE_FIELD(Boolean, v);
}
static void SetStaticByteField(JNIEnv* env, jclass, jfieldID fid, jbyte v) {
SET_STATIC_PRIMITIVE_FIELD(Byte, v);
}
static void SetStaticCharField(JNIEnv* env, jclass, jfieldID fid, jchar v) {
SET_STATIC_PRIMITIVE_FIELD(Char, v);
}
static void SetStaticFloatField(JNIEnv* env, jclass, jfieldID fid, jfloat v) {
SET_STATIC_PRIMITIVE_FIELD(Float, v);
}
static void SetStaticDoubleField(JNIEnv* env, jclass, jfieldID fid, jdouble v) {
SET_STATIC_PRIMITIVE_FIELD(Double, v);
}
static void SetStaticIntField(JNIEnv* env, jclass, jfieldID fid, jint v) {
SET_STATIC_PRIMITIVE_FIELD(Int, v);
}
static void SetStaticLongField(JNIEnv* env, jclass, jfieldID fid, jlong v) {
SET_STATIC_PRIMITIVE_FIELD(Long, v);
}
static void SetStaticShortField(JNIEnv* env, jclass, jfieldID fid, jshort v) {
SET_STATIC_PRIMITIVE_FIELD(Short, v);
}
static jobject CallStaticObjectMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
jobject local_result = soa.AddLocalReference<jobject>(result.GetL());
va_end(ap);
return local_result;
}
static jobject CallStaticObjectMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jobject CallStaticObjectMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithJValues(soa, nullptr, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jboolean CallStaticBooleanMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
va_end(ap);
return result.GetZ();
}
static jboolean CallStaticBooleanMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetZ();
}
static jboolean CallStaticBooleanMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetZ();
}
static jbyte CallStaticByteMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
va_end(ap);
return result.GetB();
}
static jbyte CallStaticByteMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetB();
}
static jbyte CallStaticByteMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetB();
}
static jchar CallStaticCharMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
va_end(ap);
return result.GetC();
}
static jchar CallStaticCharMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetC();
}
static jchar CallStaticCharMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetC();
}
static jshort CallStaticShortMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
va_end(ap);
return result.GetS();
}
static jshort CallStaticShortMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetS();
}
static jshort CallStaticShortMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetS();
}
static jint CallStaticIntMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
va_end(ap);
return result.GetI();
}
static jint CallStaticIntMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetI();
}
static jint CallStaticIntMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetI();
}
static jlong CallStaticLongMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
va_end(ap);
return result.GetJ();
}
static jlong CallStaticLongMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetJ();
}
static jlong CallStaticLongMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetJ();
}
static jfloat CallStaticFloatMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
va_end(ap);
return result.GetF();
}
static jfloat CallStaticFloatMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetF();
}
static jfloat CallStaticFloatMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetF();
}
static jdouble CallStaticDoubleMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
va_end(ap);
return result.GetD();
}
static jdouble CallStaticDoubleMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetD();
}
static jdouble CallStaticDoubleMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetD();
}
static void CallStaticVoidMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithVarArgs(soa, nullptr, mid, ap);
va_end(ap);
}
static void CallStaticVoidMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithVarArgs(soa, nullptr, mid, args);
}
static void CallStaticVoidMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithJValues(soa, nullptr, mid, args);
}
static jstring NewString(JNIEnv* env, const jchar* chars, jsize char_count) {
if (UNLIKELY(char_count < 0)) {
JavaVmExtFromEnv(env)->JniAbortF("NewString", "char_count < 0: %d", char_count);
return nullptr;
}
if (UNLIKELY(chars == nullptr && char_count > 0)) {
JavaVmExtFromEnv(env)->JniAbortF("NewString", "chars == null && char_count > 0");
return nullptr;
}
ScopedObjectAccess soa(env);
mirror::String* result = mirror::String::AllocFromUtf16(soa.Self(), char_count, chars);
return soa.AddLocalReference<jstring>(result);
}
static jstring NewStringUTF(JNIEnv* env, const char* utf) {
if (utf == nullptr) {
return nullptr;
}
ScopedObjectAccess soa(env);
mirror::String* result = mirror::String::AllocFromModifiedUtf8(soa.Self(), utf);
return soa.AddLocalReference<jstring>(result);
}
static jsize GetStringLength(JNIEnv* env, jstring java_string) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(java_string);
ScopedObjectAccess soa(env);
return soa.Decode<mirror::String*>(java_string)->GetLength();
}
static jsize GetStringUTFLength(JNIEnv* env, jstring java_string) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(java_string);
ScopedObjectAccess soa(env);
return soa.Decode<mirror::String*>(java_string)->GetUtfLength();
}
static void GetStringRegion(JNIEnv* env, jstring java_string, jsize start, jsize length,
jchar* buf) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string);
ScopedObjectAccess soa(env);
mirror::String* s = soa.Decode<mirror::String*>(java_string);
if (start < 0 || length < 0 || length > s->GetLength() - start) {
ThrowSIOOBE(soa, start, length, s->GetLength());
} else {
CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf);
const jchar* chars = s->GetValue();
memcpy(buf, chars + start, length * sizeof(jchar));
}
}
static void GetStringUTFRegion(JNIEnv* env, jstring java_string, jsize start, jsize length,
char* buf) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string);
ScopedObjectAccess soa(env);
mirror::String* s = soa.Decode<mirror::String*>(java_string);
if (start < 0 || length < 0 || length > s->GetLength() - start) {
ThrowSIOOBE(soa, start, length, s->GetLength());
} else {
CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf);
const jchar* chars = s->GetValue();
size_t bytes = CountUtf8Bytes(chars + start, length);
ConvertUtf16ToModifiedUtf8(buf, bytes, chars + start, length);
}
}
static const jchar* GetStringChars(JNIEnv* env, jstring java_string, jboolean* is_copy) {
CHECK_NON_NULL_ARGUMENT(java_string);
ScopedObjectAccess soa(env);
mirror::String* s = soa.Decode<mirror::String*>(java_string);
gc::Heap* heap = Runtime::Current()->GetHeap();
if (heap->IsMovableObject(s)) {
jchar* chars = new jchar[s->GetLength()];
memcpy(chars, s->GetValue(), sizeof(jchar) * s->GetLength());
if (is_copy != nullptr) {
*is_copy = JNI_TRUE;
}
return chars;
}
if (is_copy != nullptr) {
*is_copy = JNI_FALSE;
}
return static_cast<jchar*>(s->GetValue());
}
static void ReleaseStringChars(JNIEnv* env, jstring java_string, const jchar* chars) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string);
ScopedObjectAccess soa(env);
mirror::String* s = soa.Decode<mirror::String*>(java_string);
if (chars != s->GetValue()) {
delete[] chars;
}
}
static const jchar* GetStringCritical(JNIEnv* env, jstring java_string, jboolean* is_copy) {
CHECK_NON_NULL_ARGUMENT(java_string);
ScopedObjectAccess soa(env);
mirror::String* s = soa.Decode<mirror::String*>(java_string);
gc::Heap* heap = Runtime::Current()->GetHeap();
if (heap->IsMovableObject(s)) {
StackHandleScope<1> hs(soa.Self());
HandleWrapper<mirror::String> h(hs.NewHandleWrapper(&s));
if (!kUseReadBarrier) {
heap->IncrementDisableMovingGC(soa.Self());
} else {
// For the CC collector, we only need to wait for the thread flip rather than the whole GC
// to occur thanks to the to-space invariant.
heap->IncrementDisableThreadFlip(soa.Self());
}
}
if (is_copy != nullptr) {
*is_copy = JNI_FALSE;
}
return static_cast<jchar*>(s->GetValue());
}
static void ReleaseStringCritical(JNIEnv* env,
jstring java_string,
const jchar* chars ATTRIBUTE_UNUSED) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string);
ScopedObjectAccess soa(env);
gc::Heap* heap = Runtime::Current()->GetHeap();
mirror::String* s = soa.Decode<mirror::String*>(java_string);
if (heap->IsMovableObject(s)) {
if (!kUseReadBarrier) {
heap->DecrementDisableMovingGC(soa.Self());
} else {
heap->DecrementDisableThreadFlip(soa.Self());
}
}
}
static const char* GetStringUTFChars(JNIEnv* env, jstring java_string, jboolean* is_copy) {
if (java_string == nullptr) {
return nullptr;
}
if (is_copy != nullptr) {
*is_copy = JNI_TRUE;
}
ScopedObjectAccess soa(env);
mirror::String* s = soa.Decode<mirror::String*>(java_string);
size_t byte_count = s->GetUtfLength();
char* bytes = new char[byte_count + 1];
CHECK(bytes != nullptr); // bionic aborts anyway.
const uint16_t* chars = s->GetValue();
ConvertUtf16ToModifiedUtf8(bytes, byte_count, chars, s->GetLength());
bytes[byte_count] = '\0';
return bytes;
}
static void ReleaseStringUTFChars(JNIEnv*, jstring, const char* chars) {
delete[] chars;
}
static jsize GetArrayLength(JNIEnv* env, jarray java_array) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(java_array);
ScopedObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(java_array);
if (UNLIKELY(!obj->IsArrayInstance())) {
soa.Vm()->JniAbortF("GetArrayLength", "not an array: %s", PrettyTypeOf(obj).c_str());
return 0;
}
mirror::Array* array = obj->AsArray();
return array->GetLength();
}
static jobject GetObjectArrayElement(JNIEnv* env, jobjectArray java_array, jsize index) {
CHECK_NON_NULL_ARGUMENT(java_array);
ScopedObjectAccess soa(env);
mirror::ObjectArray<mirror::Object>* array =
soa.Decode<mirror::ObjectArray<mirror::Object>*>(java_array);
return soa.AddLocalReference<jobject>(array->Get(index));
}
static void SetObjectArrayElement(JNIEnv* env, jobjectArray java_array, jsize index,
jobject java_value) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array);
ScopedObjectAccess soa(env);
mirror::ObjectArray<mirror::Object>* array =
soa.Decode<mirror::ObjectArray<mirror::Object>*>(java_array);
mirror::Object* value = soa.Decode<mirror::Object*>(java_value);
array->Set<false>(index, value);
}
static jbooleanArray NewBooleanArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jbooleanArray, mirror::BooleanArray>(env, length);
}
static jbyteArray NewByteArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jbyteArray, mirror::ByteArray>(env, length);
}
static jcharArray NewCharArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jcharArray, mirror::CharArray>(env, length);
}
static jdoubleArray NewDoubleArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jdoubleArray, mirror::DoubleArray>(env, length);
}
static jfloatArray NewFloatArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jfloatArray, mirror::FloatArray>(env, length);
}
static jintArray NewIntArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jintArray, mirror::IntArray>(env, length);
}
static jlongArray NewLongArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jlongArray, mirror::LongArray>(env, length);
}
static jobjectArray NewObjectArray(JNIEnv* env, jsize length, jclass element_jclass,
jobject initial_element) {
if (UNLIKELY(length < 0)) {
JavaVmExtFromEnv(env)->JniAbortF("NewObjectArray", "negative array length: %d", length);
return nullptr;
}
CHECK_NON_NULL_ARGUMENT(element_jclass);
// Compute the array class corresponding to the given element class.
ScopedObjectAccess soa(env);
mirror::Class* array_class;
{
mirror::Class* element_class = soa.Decode<mirror::Class*>(element_jclass);
if (UNLIKELY(element_class->IsPrimitive())) {
soa.Vm()->JniAbortF("NewObjectArray", "not an object type: %s",
PrettyDescriptor(element_class).c_str());
return nullptr;
}
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
array_class = class_linker->FindArrayClass(soa.Self(), &element_class);
if (UNLIKELY(array_class == nullptr)) {
return nullptr;
}
}
// Allocate and initialize if necessary.
mirror::ObjectArray<mirror::Object>* result =
mirror::ObjectArray<mirror::Object>::Alloc(soa.Self(), array_class, length);
if (result != nullptr && initial_element != nullptr) {
mirror::Object* initial_object = soa.Decode<mirror::Object*>(initial_element);
if (initial_object != nullptr) {
mirror::Class* element_class = result->GetClass()->GetComponentType();
if (UNLIKELY(!element_class->IsAssignableFrom(initial_object->GetClass()))) {
soa.Vm()->JniAbortF("NewObjectArray", "cannot assign object of type '%s' to array with "
"element type of '%s'",
PrettyDescriptor(initial_object->GetClass()).c_str(),
PrettyDescriptor(element_class).c_str());
return nullptr;
} else {
for (jsize i = 0; i < length; ++i) {
result->SetWithoutChecks<false>(i, initial_object);
}
}
}
}
return soa.AddLocalReference<jobjectArray>(result);
}
static jshortArray NewShortArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jshortArray, mirror::ShortArray>(env, length);
}
static void* GetPrimitiveArrayCritical(JNIEnv* env, jarray java_array, jboolean* is_copy) {
CHECK_NON_NULL_ARGUMENT(java_array);
ScopedObjectAccess soa(env);
mirror::Array* array = soa.Decode<mirror::Array*>(java_array);
if (UNLIKELY(!array->GetClass()->IsPrimitiveArray())) {
soa.Vm()->JniAbortF("GetPrimitiveArrayCritical", "expected primitive array, given %s",
PrettyDescriptor(array->GetClass()).c_str());
return nullptr;
}
gc::Heap* heap = Runtime::Current()->GetHeap();
if (heap->IsMovableObject(array)) {
if (!kUseReadBarrier) {
heap->IncrementDisableMovingGC(soa.Self());
} else {
// For the CC collector, we only need to wait for the thread flip rather than the whole GC
// to occur thanks to the to-space invariant.
heap->IncrementDisableThreadFlip(soa.Self());
}
// Re-decode in case the object moved since IncrementDisableGC waits for GC to complete.
array = soa.Decode<mirror::Array*>(java_array);
}
if (is_copy != nullptr) {
*is_copy = JNI_FALSE;
}
return array->GetRawData(array->GetClass()->GetComponentSize(), 0);
}
static void ReleasePrimitiveArrayCritical(JNIEnv* env, jarray java_array, void* elements,
jint mode) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array);
ScopedObjectAccess soa(env);
mirror::Array* array = soa.Decode<mirror::Array*>(java_array);
if (UNLIKELY(!array->GetClass()->IsPrimitiveArray())) {
soa.Vm()->JniAbortF("ReleasePrimitiveArrayCritical", "expected primitive array, given %s",
PrettyDescriptor(array->GetClass()).c_str());
return;
}
const size_t component_size = array->GetClass()->GetComponentSize();
ReleasePrimitiveArray(soa, array, component_size, elements, mode);
}
static jboolean* GetBooleanArrayElements(JNIEnv* env, jbooleanArray array, jboolean* is_copy) {
return GetPrimitiveArray<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, is_copy);
}
static jbyte* GetByteArrayElements(JNIEnv* env, jbyteArray array, jboolean* is_copy) {
return GetPrimitiveArray<jbyteArray, jbyte, mirror::ByteArray>(env, array, is_copy);
}
static jchar* GetCharArrayElements(JNIEnv* env, jcharArray array, jboolean* is_copy) {
return GetPrimitiveArray<jcharArray, jchar, mirror::CharArray>(env, array, is_copy);
}
static jdouble* GetDoubleArrayElements(JNIEnv* env, jdoubleArray array, jboolean* is_copy) {
return GetPrimitiveArray<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, is_copy);
}
static jfloat* GetFloatArrayElements(JNIEnv* env, jfloatArray array, jboolean* is_copy) {
return GetPrimitiveArray<jfloatArray, jfloat, mirror::FloatArray>(env, array, is_copy);
}
static jint* GetIntArrayElements(JNIEnv* env, jintArray array, jboolean* is_copy) {
return GetPrimitiveArray<jintArray, jint, mirror::IntArray>(env, array, is_copy);
}
static jlong* GetLongArrayElements(JNIEnv* env, jlongArray array, jboolean* is_copy) {
return GetPrimitiveArray<jlongArray, jlong, mirror::LongArray>(env, array, is_copy);
}
static jshort* GetShortArrayElements(JNIEnv* env, jshortArray array, jboolean* is_copy) {
return GetPrimitiveArray<jshortArray, jshort, mirror::ShortArray>(env, array, is_copy);
}
static void ReleaseBooleanArrayElements(JNIEnv* env, jbooleanArray array, jboolean* elements,
jint mode) {
ReleasePrimitiveArray<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, elements,
mode);
}
static void ReleaseByteArrayElements(JNIEnv* env, jbyteArray array, jbyte* elements, jint mode) {
ReleasePrimitiveArray<jbyteArray, jbyte, mirror::ByteArray>(env, array, elements, mode);
}
static void ReleaseCharArrayElements(JNIEnv* env, jcharArray array, jchar* elements, jint mode) {
ReleasePrimitiveArray<jcharArray, jchar, mirror::CharArray>(env, array, elements, mode);
}
static void ReleaseDoubleArrayElements(JNIEnv* env, jdoubleArray array, jdouble* elements,
jint mode) {
ReleasePrimitiveArray<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, elements, mode);
}
static void ReleaseFloatArrayElements(JNIEnv* env, jfloatArray array, jfloat* elements,
jint mode) {
ReleasePrimitiveArray<jfloatArray, jfloat, mirror::FloatArray>(env, array, elements, mode);
}
static void ReleaseIntArrayElements(JNIEnv* env, jintArray array, jint* elements, jint mode) {
ReleasePrimitiveArray<jintArray, jint, mirror::IntArray>(env, array, elements, mode);
}
static void ReleaseLongArrayElements(JNIEnv* env, jlongArray array, jlong* elements, jint mode) {
ReleasePrimitiveArray<jlongArray, jlong, mirror::LongArray>(env, array, elements, mode);
}
static void ReleaseShortArrayElements(JNIEnv* env, jshortArray array, jshort* elements,
jint mode) {
ReleasePrimitiveArray<jshortArray, jshort, mirror::ShortArray>(env, array, elements, mode);
}
static void GetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length,
jboolean* buf) {
GetPrimitiveArrayRegion<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, start,
length, buf);
}
static void GetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length,
jbyte* buf) {
GetPrimitiveArrayRegion<jbyteArray, jbyte, mirror::ByteArray>(env, array, start, length, buf);
}
static void GetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length,
jchar* buf) {
GetPrimitiveArrayRegion<jcharArray, jchar, mirror::CharArray>(env, array, start, length, buf);
}
static void GetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length,
jdouble* buf) {
GetPrimitiveArrayRegion<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, start, length,
buf);
}
static void GetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length,
jfloat* buf) {
GetPrimitiveArrayRegion<jfloatArray, jfloat, mirror::FloatArray>(env, array, start, length,
buf);
}
static void GetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length,
jint* buf) {
GetPrimitiveArrayRegion<jintArray, jint, mirror::IntArray>(env, array, start, length, buf);
}
static void GetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length,
jlong* buf) {
GetPrimitiveArrayRegion<jlongArray, jlong, mirror::LongArray>(env, array, start, length, buf);
}
static void GetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length,
jshort* buf) {
GetPrimitiveArrayRegion<jshortArray, jshort, mirror::ShortArray>(env, array, start, length,
buf);
}
static void SetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length,
const jboolean* buf) {
SetPrimitiveArrayRegion<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, start,
length, buf);
}
static void SetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length,
const jbyte* buf) {
SetPrimitiveArrayRegion<jbyteArray, jbyte, mirror::ByteArray>(env, array, start, length, buf);
}
static void SetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length,
const jchar* buf) {
SetPrimitiveArrayRegion<jcharArray, jchar, mirror::CharArray>(env, array, start, length, buf);
}
static void SetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length,
const jdouble* buf) {
SetPrimitiveArrayRegion<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, start, length,
buf);
}
static void SetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length,
const jfloat* buf) {
SetPrimitiveArrayRegion<jfloatArray, jfloat, mirror::FloatArray>(env, array, start, length,
buf);
}
static void SetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length,
const jint* buf) {
SetPrimitiveArrayRegion<jintArray, jint, mirror::IntArray>(env, array, start, length, buf);
}
static void SetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length,
const jlong* buf) {
SetPrimitiveArrayRegion<jlongArray, jlong, mirror::LongArray>(env, array, start, length, buf);
}
static void SetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length,
const jshort* buf) {
SetPrimitiveArrayRegion<jshortArray, jshort, mirror::ShortArray>(env, array, start, length,
buf);
}
static jint RegisterNatives(JNIEnv* env, jclass java_class, const JNINativeMethod* methods,
jint method_count) {
return RegisterNativeMethods(env, java_class, methods, method_count, true);
}
static jint RegisterNativeMethods(JNIEnv* env, jclass java_class, const JNINativeMethod* methods,
jint method_count, bool return_errors) {
if (UNLIKELY(method_count < 0)) {
JavaVmExtFromEnv(env)->JniAbortF("RegisterNatives", "negative method count: %d",
method_count);
return JNI_ERR; // Not reached except in unit tests.
}
CHECK_NON_NULL_ARGUMENT_FN_NAME("RegisterNatives", java_class, JNI_ERR);
ScopedObjectAccess soa(env);
mirror::Class* c = soa.Decode<mirror::Class*>(java_class);
if (UNLIKELY(method_count == 0)) {
LOG(WARNING) << "JNI RegisterNativeMethods: attempt to register 0 native methods for "
<< PrettyDescriptor(c);
return JNI_OK;
}
CHECK_NON_NULL_ARGUMENT_FN_NAME("RegisterNatives", methods, JNI_ERR);
for (jint i = 0; i < method_count; ++i) {
const char* name = methods[i].name;
const char* sig = methods[i].signature;
const void* fnPtr = methods[i].fnPtr;
if (UNLIKELY(name == nullptr)) {
ReportInvalidJNINativeMethod(soa, c, "method name", i, return_errors);
return JNI_ERR;
} else if (UNLIKELY(sig == nullptr)) {
ReportInvalidJNINativeMethod(soa, c, "method signature", i, return_errors);
return JNI_ERR;
} else if (UNLIKELY(fnPtr == nullptr)) {
ReportInvalidJNINativeMethod(soa, c, "native function", i, return_errors);
return JNI_ERR;
}
bool is_fast = false;
// Notes about fast JNI calls:
//
// On a normal JNI call, the calling thread usually transitions
// from the kRunnable state to the kNative state. But if the
// called native function needs to access any Java object, it
// will have to transition back to the kRunnable state.
//
// There is a cost to this double transition. For a JNI call
// that should be quick, this cost may dominate the call cost.
//
// On a fast JNI call, the calling thread avoids this double
// transition by not transitioning from kRunnable to kNative and
// stays in the kRunnable state.
//
// There are risks to using a fast JNI call because it can delay
// a response to a thread suspension request which is typically
// used for a GC root scanning, etc. If a fast JNI call takes a
// long time, it could cause longer thread suspension latency
// and GC pauses.
//
// Thus, fast JNI should be used with care. It should be used
// for a JNI call that takes a short amount of time (eg. no
// long-running loop) and does not block (eg. no locks, I/O,
// etc.)
//
// A '!' prefix in the signature in the JNINativeMethod
// indicates that it's a fast JNI call and the runtime omits the
// thread state transition from kRunnable to kNative at the
// entry.
if (*sig == '!') {
is_fast = true;
++sig;
}
// Note: the right order is to try to find the method locally
// first, either as a direct or a virtual method. Then move to
// the parent.
ArtMethod* m = nullptr;
bool warn_on_going_to_parent = down_cast<JNIEnvExt*>(env)->vm->IsCheckJniEnabled();
for (mirror::Class* current_class = c;
current_class != nullptr;
current_class = current_class->GetSuperClass()) {
// Search first only comparing methods which are native.
m = FindMethod<true>(current_class, name, sig);
if (m != nullptr) {
break;
}
// Search again comparing to all methods, to find non-native methods that match.
m = FindMethod<false>(current_class, name, sig);
if (m != nullptr) {
break;
}
if (warn_on_going_to_parent) {
LOG(WARNING) << "CheckJNI: method to register \"" << name << "\" not in the given class. "
<< "This is slow, consider changing your RegisterNatives calls.";
warn_on_going_to_parent = false;
}
}
if (m == nullptr) {
LOG(return_errors ? ERROR : INTERNAL_FATAL) << "Failed to register native method "
<< PrettyDescriptor(c) << "." << name << sig << " in "
<< c->GetDexCache()->GetLocation()->ToModifiedUtf8();
// Safe to pass in LOG(FATAL) since the log object aborts in destructor and only goes
// out of scope after the DumpClass is done executing.
c->DumpClass(LOG(return_errors ? ERROR : FATAL), mirror::Class::kDumpClassFullDetail);
ThrowNoSuchMethodError(soa, c, name, sig, "static or non-static");
return JNI_ERR;
} else if (!m->IsNative()) {
LOG(return_errors ? ERROR : FATAL) << "Failed to register non-native method "
<< PrettyDescriptor(c) << "." << name << sig
<< " as native";
ThrowNoSuchMethodError(soa, c, name, sig, "native");
return JNI_ERR;
}
VLOG(jni) << "[Registering JNI native method " << PrettyMethod(m) << "]";
m->RegisterNative(fnPtr, is_fast);
}
return JNI_OK;
}
static jint UnregisterNatives(JNIEnv* env, jclass java_class) {
CHECK_NON_NULL_ARGUMENT_RETURN(java_class, JNI_ERR);
ScopedObjectAccess soa(env);
mirror::Class* c = soa.Decode<mirror::Class*>(java_class);
VLOG(jni) << "[Unregistering JNI native methods for " << PrettyClass(c) << "]";
size_t unregistered_count = 0;
auto pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize();
for (auto& m : c->GetMethods(pointer_size)) {
if (m.IsNative()) {
m.UnregisterNative();
unregistered_count++;
}
}
if (unregistered_count == 0) {
LOG(WARNING) << "JNI UnregisterNatives: attempt to unregister native methods of class '"
<< PrettyDescriptor(c) << "' that contains no native methods";
}
return JNI_OK;
}
static jint MonitorEnter(JNIEnv* env, jobject java_object) NO_THREAD_SAFETY_ANALYSIS {
CHECK_NON_NULL_ARGUMENT_RETURN(java_object, JNI_ERR);
ScopedObjectAccess soa(env);
mirror::Object* o = soa.Decode<mirror::Object*>(java_object);
o = o->MonitorEnter(soa.Self());
if (soa.Self()->IsExceptionPending()) {
return JNI_ERR;
}
soa.Env()->monitors.Add(o);
return JNI_OK;
}
static jint MonitorExit(JNIEnv* env, jobject java_object) NO_THREAD_SAFETY_ANALYSIS {
CHECK_NON_NULL_ARGUMENT_RETURN(java_object, JNI_ERR);
ScopedObjectAccess soa(env);
mirror::Object* o = soa.Decode<mirror::Object*>(java_object);
o->MonitorExit(soa.Self());
if (soa.Self()->IsExceptionPending()) {
return JNI_ERR;
}
soa.Env()->monitors.Remove(o);
return JNI_OK;
}
static jint GetJavaVM(JNIEnv* env, JavaVM** vm) {
CHECK_NON_NULL_ARGUMENT_RETURN(vm, JNI_ERR);
Runtime* runtime = Runtime::Current();
if (runtime != nullptr) {
*vm = runtime->GetJavaVM();
} else {
*vm = nullptr;
}
return (*vm != nullptr) ? JNI_OK : JNI_ERR;
}
static jobject NewDirectByteBuffer(JNIEnv* env, void* address, jlong capacity) {
if (capacity < 0) {
JavaVmExtFromEnv(env)->JniAbortF("NewDirectByteBuffer", "negative buffer capacity: %" PRId64,
capacity);
return nullptr;
}
if (address == nullptr && capacity != 0) {
JavaVmExtFromEnv(env)->JniAbortF("NewDirectByteBuffer",
"non-zero capacity for nullptr pointer: %" PRId64, capacity);
return nullptr;
}
// At the moment, the capacity of DirectByteBuffer is limited to a signed int.
if (capacity > INT_MAX) {
JavaVmExtFromEnv(env)->JniAbortF("NewDirectByteBuffer",
"buffer capacity greater than maximum jint: %" PRId64,
capacity);
return nullptr;
}
jlong address_arg = reinterpret_cast<jlong>(address);
jint capacity_arg = static_cast<jint>(capacity);
jobject result = env->NewObject(WellKnownClasses::java_nio_DirectByteBuffer,
WellKnownClasses::java_nio_DirectByteBuffer_init,
address_arg, capacity_arg);
return static_cast<JNIEnvExt*>(env)->self->IsExceptionPending() ? nullptr : result;
}
static void* GetDirectBufferAddress(JNIEnv* env, jobject java_buffer) {
return reinterpret_cast<void*>(env->GetLongField(
java_buffer, WellKnownClasses::java_nio_DirectByteBuffer_effectiveDirectAddress));
}
static jlong GetDirectBufferCapacity(JNIEnv* env, jobject java_buffer) {
return static_cast<jlong>(env->GetIntField(
java_buffer, WellKnownClasses::java_nio_DirectByteBuffer_capacity));
}
static jobjectRefType GetObjectRefType(JNIEnv* env ATTRIBUTE_UNUSED, jobject java_object) {
if (java_object == nullptr) {
return JNIInvalidRefType;
}
// Do we definitely know what kind of reference this is?
IndirectRef ref = reinterpret_cast<IndirectRef>(java_object);
IndirectRefKind kind = GetIndirectRefKind(ref);
switch (kind) {
case kLocal:
return JNILocalRefType;
case kGlobal:
return JNIGlobalRefType;
case kWeakGlobal:
return JNIWeakGlobalRefType;
case kHandleScopeOrInvalid:
// Assume value is in a handle scope.
return JNILocalRefType;
}
LOG(FATAL) << "IndirectRefKind[" << kind << "]";
UNREACHABLE();
}
private:
static jint EnsureLocalCapacityInternal(ScopedObjectAccess& soa, jint desired_capacity,
const char* caller)
SHARED_REQUIRES(Locks::mutator_lock_) {
// TODO: we should try to expand the table if necessary.
if (desired_capacity < 0 || desired_capacity > static_cast<jint>(kLocalsMax)) {
LOG(ERROR) << "Invalid capacity given to " << caller << ": " << desired_capacity;
return JNI_ERR;
}
// TODO: this isn't quite right, since "capacity" includes holes.
const size_t capacity = soa.Env()->locals.Capacity();
bool okay = (static_cast<jint>(kLocalsMax - capacity) >= desired_capacity);
if (!okay) {
soa.Self()->ThrowOutOfMemoryError(caller);
}
return okay ? JNI_OK : JNI_ERR;
}
template<typename JniT, typename ArtT>
static JniT NewPrimitiveArray(JNIEnv* env, jsize length) {
ScopedObjectAccess soa(env);
if (UNLIKELY(length < 0)) {
soa.Vm()->JniAbortF("NewPrimitiveArray", "negative array length: %d", length);
return nullptr;
}
ArtT* result = ArtT::Alloc(soa.Self(), length);
return soa.AddLocalReference<JniT>(result);
}
template <typename JArrayT, typename ElementT, typename ArtArrayT>
static ArtArrayT* DecodeAndCheckArrayType(ScopedObjectAccess& soa, JArrayT java_array,
const char* fn_name, const char* operation)
SHARED_REQUIRES(Locks::mutator_lock_) {
ArtArrayT* array = soa.Decode<ArtArrayT*>(java_array);
if (UNLIKELY(ArtArrayT::GetArrayClass() != array->GetClass())) {
soa.Vm()->JniAbortF(fn_name,
"attempt to %s %s primitive array elements with an object of type %s",
operation,
PrettyDescriptor(ArtArrayT::GetArrayClass()->GetComponentType()).c_str(),
PrettyDescriptor(array->GetClass()).c_str());
return nullptr;
}
DCHECK_EQ(sizeof(ElementT), array->GetClass()->GetComponentSize());
return array;
}
template <typename ArrayT, typename ElementT, typename ArtArrayT>
static ElementT* GetPrimitiveArray(JNIEnv* env, ArrayT java_array, jboolean* is_copy) {
CHECK_NON_NULL_ARGUMENT(java_array);
ScopedObjectAccess soa(env);
ArtArrayT* array = DecodeAndCheckArrayType<ArrayT, ElementT, ArtArrayT>(soa, java_array,
"GetArrayElements",
"get");
if (UNLIKELY(array == nullptr)) {
return nullptr;
}
// Only make a copy if necessary.
if (Runtime::Current()->GetHeap()->IsMovableObject(array)) {
if (is_copy != nullptr) {
*is_copy = JNI_TRUE;
}
const size_t component_size = sizeof(ElementT);
size_t size = array->GetLength() * component_size;
void* data = new uint64_t[RoundUp(size, 8) / 8];
memcpy(data, array->GetData(), size);
return reinterpret_cast<ElementT*>(data);
} else {
if (is_copy != nullptr) {
*is_copy = JNI_FALSE;
}
return reinterpret_cast<ElementT*>(array->GetData());
}
}
template <typename ArrayT, typename ElementT, typename ArtArrayT>
static void ReleasePrimitiveArray(JNIEnv* env, ArrayT java_array, ElementT* elements, jint mode) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array);
ScopedObjectAccess soa(env);
ArtArrayT* array = DecodeAndCheckArrayType<ArrayT, ElementT, ArtArrayT>(soa, java_array,
"ReleaseArrayElements",
"release");
if (array == nullptr) {
return;
}
ReleasePrimitiveArray(soa, array, sizeof(ElementT), elements, mode);
}
static void ReleasePrimitiveArray(ScopedObjectAccess& soa, mirror::Array* array,
size_t component_size, void* elements, jint mode)
SHARED_REQUIRES(Locks::mutator_lock_) {
void* array_data = array->GetRawData(component_size, 0);
gc::Heap* heap = Runtime::Current()->GetHeap();
bool is_copy = array_data != elements;
size_t bytes = array->GetLength() * component_size;
VLOG(heap) << "Release primitive array " << soa.Env() << " array_data " << array_data
<< " elements " << elements;
if (is_copy) {
// Sanity check: If elements is not the same as the java array's data, it better not be a
// heap address. TODO: This might be slow to check, may be worth keeping track of which
// copies we make?
if (heap->IsNonDiscontinuousSpaceHeapAddress(reinterpret_cast<mirror::Object*>(elements))) {
soa.Vm()->JniAbortF("ReleaseArrayElements",
"invalid element pointer %p, array elements are %p",
reinterpret_cast<void*>(elements), array_data);
return;
}
if (mode != JNI_ABORT) {
memcpy(array_data, elements, bytes);
} else if (kWarnJniAbort && memcmp(array_data, elements, bytes) != 0) {
// Warn if we have JNI_ABORT and the arrays don't match since this is usually an error.
LOG(WARNING) << "Possible incorrect JNI_ABORT in Release*ArrayElements";
soa.Self()->DumpJavaStack(LOG(WARNING));
}
}
if (mode != JNI_COMMIT) {
if (is_copy) {
delete[] reinterpret_cast<uint64_t*>(elements);
} else if (heap->IsMovableObject(array)) {
// Non copy to a movable object must means that we had disabled the moving GC.
if (!kUseReadBarrier) {
heap->DecrementDisableMovingGC(soa.Self());
} else {
heap->DecrementDisableThreadFlip(soa.Self());
}
}
}
}
template <typename JArrayT, typename ElementT, typename ArtArrayT>
static void GetPrimitiveArrayRegion(JNIEnv* env, JArrayT java_array,
jsize start, jsize length, ElementT* buf) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array);
ScopedObjectAccess soa(env);
ArtArrayT* array =
DecodeAndCheckArrayType<JArrayT, ElementT, ArtArrayT>(soa, java_array,
"GetPrimitiveArrayRegion",
"get region of");
if (array != nullptr) {
if (start < 0 || length < 0 || length > array->GetLength() - start) {
ThrowAIOOBE(soa, array, start, length, "src");
} else {
CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf);
ElementT* data = array->GetData();
memcpy(buf, data + start, length * sizeof(ElementT));
}
}
}
template <typename JArrayT, typename ElementT, typename ArtArrayT>
static void SetPrimitiveArrayRegion(JNIEnv* env, JArrayT java_array,
jsize start, jsize length, const ElementT* buf) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array);
ScopedObjectAccess soa(env);
ArtArrayT* array =
DecodeAndCheckArrayType<JArrayT, ElementT, ArtArrayT>(soa, java_array,
"SetPrimitiveArrayRegion",
"set region of");
if (array != nullptr) {
if (start < 0 || length < 0 || length > array->GetLength() - start) {
ThrowAIOOBE(soa, array, start, length, "dst");
} else {
CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf);
ElementT* data = array->GetData();
memcpy(data + start, buf, length * sizeof(ElementT));
}
}
}
};
const JNINativeInterface gJniNativeInterface = {
nullptr, // reserved0.
nullptr, // reserved1.
nullptr, // reserved2.
nullptr, // reserved3.
JNI::GetVersion,
JNI::DefineClass,
JNI::FindClass,
JNI::FromReflectedMethod,
JNI::FromReflectedField,
JNI::ToReflectedMethod,
JNI::GetSuperclass,
JNI::IsAssignableFrom,
JNI::ToReflectedField,
JNI::Throw,
JNI::ThrowNew,
JNI::ExceptionOccurred,
JNI::ExceptionDescribe,
JNI::ExceptionClear,
JNI::FatalError,
JNI::PushLocalFrame,
JNI::PopLocalFrame,
JNI::NewGlobalRef,
JNI::DeleteGlobalRef,
JNI::DeleteLocalRef,
JNI::IsSameObject,
JNI::NewLocalRef,
JNI::EnsureLocalCapacity,
JNI::AllocObject,
JNI::NewObject,
JNI::NewObjectV,
JNI::NewObjectA,
JNI::GetObjectClass,
JNI::IsInstanceOf,
JNI::GetMethodID,
JNI::CallObjectMethod,
JNI::CallObjectMethodV,
JNI::CallObjectMethodA,
JNI::CallBooleanMethod,
JNI::CallBooleanMethodV,
JNI::CallBooleanMethodA,
JNI::CallByteMethod,
JNI::CallByteMethodV,
JNI::CallByteMethodA,
JNI::CallCharMethod,
JNI::CallCharMethodV,
JNI::CallCharMethodA,
JNI::CallShortMethod,
JNI::CallShortMethodV,
JNI::CallShortMethodA,
JNI::CallIntMethod,
JNI::CallIntMethodV,
JNI::CallIntMethodA,
JNI::CallLongMethod,
JNI::CallLongMethodV,
JNI::CallLongMethodA,
JNI::CallFloatMethod,
JNI::CallFloatMethodV,
JNI::CallFloatMethodA,
JNI::CallDoubleMethod,
JNI::CallDoubleMethodV,
JNI::CallDoubleMethodA,
JNI::CallVoidMethod,
JNI::CallVoidMethodV,
JNI::CallVoidMethodA,
JNI::CallNonvirtualObjectMethod,
JNI::CallNonvirtualObjectMethodV,
JNI::CallNonvirtualObjectMethodA,
JNI::CallNonvirtualBooleanMethod,
JNI::CallNonvirtualBooleanMethodV,
JNI::CallNonvirtualBooleanMethodA,
JNI::CallNonvirtualByteMethod,
JNI::CallNonvirtualByteMethodV,
JNI::CallNonvirtualByteMethodA,
JNI::CallNonvirtualCharMethod,
JNI::CallNonvirtualCharMethodV,
JNI::CallNonvirtualCharMethodA,
JNI::CallNonvirtualShortMethod,
JNI::CallNonvirtualShortMethodV,
JNI::CallNonvirtualShortMethodA,
JNI::CallNonvirtualIntMethod,
JNI::CallNonvirtualIntMethodV,
JNI::CallNonvirtualIntMethodA,
JNI::CallNonvirtualLongMethod,
JNI::CallNonvirtualLongMethodV,
JNI::CallNonvirtualLongMethodA,
JNI::CallNonvirtualFloatMethod,
JNI::CallNonvirtualFloatMethodV,
JNI::CallNonvirtualFloatMethodA,
JNI::CallNonvirtualDoubleMethod,
JNI::CallNonvirtualDoubleMethodV,
JNI::CallNonvirtualDoubleMethodA,
JNI::CallNonvirtualVoidMethod,
JNI::CallNonvirtualVoidMethodV,
JNI::CallNonvirtualVoidMethodA,
JNI::GetFieldID,
JNI::GetObjectField,
JNI::GetBooleanField,
JNI::GetByteField,
JNI::GetCharField,
JNI::GetShortField,
JNI::GetIntField,
JNI::GetLongField,
JNI::GetFloatField,
JNI::GetDoubleField,
JNI::SetObjectField,
JNI::SetBooleanField,
JNI::SetByteField,
JNI::SetCharField,
JNI::SetShortField,
JNI::SetIntField,
JNI::SetLongField,
JNI::SetFloatField,
JNI::SetDoubleField,
JNI::GetStaticMethodID,
JNI::CallStaticObjectMethod,
JNI::CallStaticObjectMethodV,
JNI::CallStaticObjectMethodA,
JNI::CallStaticBooleanMethod,
JNI::CallStaticBooleanMethodV,
JNI::CallStaticBooleanMethodA,
JNI::CallStaticByteMethod,
JNI::CallStaticByteMethodV,
JNI::CallStaticByteMethodA,
JNI::CallStaticCharMethod,
JNI::CallStaticCharMethodV,
JNI::CallStaticCharMethodA,
JNI::CallStaticShortMethod,
JNI::CallStaticShortMethodV,
JNI::CallStaticShortMethodA,
JNI::CallStaticIntMethod,
JNI::CallStaticIntMethodV,
JNI::CallStaticIntMethodA,
JNI::CallStaticLongMethod,
JNI::CallStaticLongMethodV,
JNI::CallStaticLongMethodA,
JNI::CallStaticFloatMethod,
JNI::CallStaticFloatMethodV,
JNI::CallStaticFloatMethodA,
JNI::CallStaticDoubleMethod,
JNI::CallStaticDoubleMethodV,
JNI::CallStaticDoubleMethodA,
JNI::CallStaticVoidMethod,
JNI::CallStaticVoidMethodV,
JNI::CallStaticVoidMethodA,
JNI::GetStaticFieldID,
JNI::GetStaticObjectField,
JNI::GetStaticBooleanField,
JNI::GetStaticByteField,
JNI::GetStaticCharField,
JNI::GetStaticShortField,
JNI::GetStaticIntField,
JNI::GetStaticLongField,
JNI::GetStaticFloatField,
JNI::GetStaticDoubleField,
JNI::SetStaticObjectField,
JNI::SetStaticBooleanField,
JNI::SetStaticByteField,
JNI::SetStaticCharField,
JNI::SetStaticShortField,
JNI::SetStaticIntField,
JNI::SetStaticLongField,
JNI::SetStaticFloatField,
JNI::SetStaticDoubleField,
JNI::NewString,
JNI::GetStringLength,
JNI::GetStringChars,
JNI::ReleaseStringChars,
JNI::NewStringUTF,
JNI::GetStringUTFLength,
JNI::GetStringUTFChars,
JNI::ReleaseStringUTFChars,
JNI::GetArrayLength,
JNI::NewObjectArray,
JNI::GetObjectArrayElement,
JNI::SetObjectArrayElement,
JNI::NewBooleanArray,
JNI::NewByteArray,
JNI::NewCharArray,
JNI::NewShortArray,
JNI::NewIntArray,
JNI::NewLongArray,
JNI::NewFloatArray,
JNI::NewDoubleArray,
JNI::GetBooleanArrayElements,
JNI::GetByteArrayElements,
JNI::GetCharArrayElements,
JNI::GetShortArrayElements,
JNI::GetIntArrayElements,
JNI::GetLongArrayElements,
JNI::GetFloatArrayElements,
JNI::GetDoubleArrayElements,
JNI::ReleaseBooleanArrayElements,
JNI::ReleaseByteArrayElements,
JNI::ReleaseCharArrayElements,
JNI::ReleaseShortArrayElements,
JNI::ReleaseIntArrayElements,
JNI::ReleaseLongArrayElements,
JNI::ReleaseFloatArrayElements,
JNI::ReleaseDoubleArrayElements,
JNI::GetBooleanArrayRegion,
JNI::GetByteArrayRegion,
JNI::GetCharArrayRegion,
JNI::GetShortArrayRegion,
JNI::GetIntArrayRegion,
JNI::GetLongArrayRegion,
JNI::GetFloatArrayRegion,
JNI::GetDoubleArrayRegion,
JNI::SetBooleanArrayRegion,
JNI::SetByteArrayRegion,
JNI::SetCharArrayRegion,
JNI::SetShortArrayRegion,
JNI::SetIntArrayRegion,
JNI::SetLongArrayRegion,
JNI::SetFloatArrayRegion,
JNI::SetDoubleArrayRegion,
JNI::RegisterNatives,
JNI::UnregisterNatives,
JNI::MonitorEnter,
JNI::MonitorExit,
JNI::GetJavaVM,
JNI::GetStringRegion,
JNI::GetStringUTFRegion,
JNI::GetPrimitiveArrayCritical,
JNI::ReleasePrimitiveArrayCritical,
JNI::GetStringCritical,
JNI::ReleaseStringCritical,
JNI::NewWeakGlobalRef,
JNI::DeleteWeakGlobalRef,
JNI::ExceptionCheck,
JNI::NewDirectByteBuffer,
JNI::GetDirectBufferAddress,
JNI::GetDirectBufferCapacity,
JNI::GetObjectRefType,
};
const JNINativeInterface* GetJniNativeInterface() {
return &gJniNativeInterface;
}
void RegisterNativeMethods(JNIEnv* env, const char* jni_class_name, const JNINativeMethod* methods,
jint method_count) {
ScopedLocalRef<jclass> c(env, env->FindClass(jni_class_name));
if (c.get() == nullptr) {
LOG(FATAL) << "Couldn't find class: " << jni_class_name;
}
JNI::RegisterNativeMethods(env, c.get(), methods, method_count, false);
}
} // namespace art
std::ostream& operator<<(std::ostream& os, const jobjectRefType& rhs) {
switch (rhs) {
case JNIInvalidRefType:
os << "JNIInvalidRefType";
return os;
case JNILocalRefType:
os << "JNILocalRefType";
return os;
case JNIGlobalRefType:
os << "JNIGlobalRefType";
return os;
case JNIWeakGlobalRefType:
os << "JNIWeakGlobalRefType";
return os;
default:
LOG(::art::FATAL) << "jobjectRefType[" << static_cast<int>(rhs) << "]";
UNREACHABLE();
}
}