blob: dba933aa8f31d1f7e206447a161adec10a71427e [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 <sys/mman.h>
#include <cstdarg>
#include <map>
#include <utility>
#include <vector>
#include "ScopedLocalRef.h"
#include "UniquePtr.h"
#include "assembler.h"
#include "class_linker.h"
#include "class_loader.h"
#include "jni.h"
#include "logging.h"
#include "object.h"
#include "object_utils.h"
#include "runtime.h"
#include "scoped_jni_thread_state.h"
#include "stl_util.h"
#include "stringpiece.h"
#include "thread.h"
namespace art {
static const size_t kMonitorsInitial = 32; // Arbitrary.
static const size_t kMonitorsMax = 4096; // Arbitrary sanity check.
static const size_t kLocalsInitial = 64; // Arbitrary.
static const size_t kLocalsMax = 512; // Arbitrary sanity check.
static const size_t kPinTableInitial = 16; // Arbitrary.
static const size_t kPinTableMax = 1024; // Arbitrary sanity check.
static size_t gGlobalsInitial = 512; // Arbitrary.
static size_t gGlobalsMax = 51200; // Arbitrary sanity check.
static const size_t kWeakGlobalsInitial = 16; // Arbitrary.
static const size_t kWeakGlobalsMax = 51200; // Arbitrary sanity check.
void SetJniGlobalsMax(size_t max) {
if (max != 0) {
gGlobalsMax = max;
gGlobalsInitial = std::min(gGlobalsInitial, gGlobalsMax);
}
}
/*
* Add a local reference for an object to the current stack frame. When
* the native function returns, the reference will be discarded.
*
* We need to allow the same reference to be added multiple times.
*
* This will be called on otherwise unreferenced objects. We cannot do
* GC allocations here, and it's best if we don't grab a mutex.
*
* Returns the local reference (currently just the same pointer that was
* passed in), or NULL on failure.
*/
template<typename T>
T AddLocalReference(JNIEnv* public_env, const Object* const_obj) {
// The jobject type hierarchy has no notion of const, so it's not worth carrying through.
Object* obj = const_cast<Object*>(const_obj);
if (obj == NULL) {
return NULL;
}
JNIEnvExt* env = reinterpret_cast<JNIEnvExt*>(public_env);
IndirectReferenceTable& locals = env->locals;
uint32_t cookie = env->local_ref_cookie;
IndirectRef ref = locals.Add(cookie, obj);
if (ref == NULL) {
// TODO: just change Add's DCHECK to CHECK and lose this?
locals.Dump();
LOG(FATAL) << "Failed adding to JNI local reference table "
<< "(has " << locals.Capacity() << " entries)";
}
#if 0 // TODO: fix this to understand PushLocalFrame, so we can turn it on.
if (env->check_jni) {
size_t entry_count = locals.Capacity();
if (entry_count > 16) {
LOG(WARNING) << "Warning: more than 16 JNI local references: "
<< entry_count << " (most recent was a " << PrettyTypeOf(obj) << ")";
locals.Dump();
// TODO: LOG(FATAL) instead.
}
}
#endif
if (env->vm->work_around_app_jni_bugs) {
// Hand out direct pointers to support broken old apps.
return reinterpret_cast<T>(obj);
}
return reinterpret_cast<T>(ref);
}
// Explicit instantiations
template jclass AddLocalReference<jclass>(JNIEnv* public_env, const Object* const_obj);
template jobject AddLocalReference<jobject>(JNIEnv* public_env, const Object* const_obj);
template jobjectArray AddLocalReference<jobjectArray>(JNIEnv* public_env, const Object* const_obj);
template jstring AddLocalReference<jstring>(JNIEnv* public_env, const Object* const_obj);
template jthrowable AddLocalReference<jthrowable>(JNIEnv* public_env, const Object* const_obj);
// For external use.
template<typename T>
T Decode(JNIEnv* public_env, jobject obj) {
JNIEnvExt* env = reinterpret_cast<JNIEnvExt*>(public_env);
return reinterpret_cast<T>(env->self->DecodeJObject(obj));
}
// TODO: Change to use template when Mac OS build server no longer uses GCC 4.2.*.
Object* DecodeObj(JNIEnv* public_env, jobject obj) {
JNIEnvExt* env = reinterpret_cast<JNIEnvExt*>(public_env);
return reinterpret_cast<Object*>(env->self->DecodeJObject(obj));
}
// Explicit instantiations.
template Array* Decode<Array*>(JNIEnv*, jobject);
template Class* Decode<Class*>(JNIEnv*, jobject);
template ClassLoader* Decode<ClassLoader*>(JNIEnv*, jobject);
template Object* Decode<Object*>(JNIEnv*, jobject);
template ObjectArray<Class>* Decode<ObjectArray<Class>*>(JNIEnv*, jobject);
template ObjectArray<ObjectArray<Class> >* Decode<ObjectArray<ObjectArray<Class> >*>(JNIEnv*, jobject);
template ObjectArray<Object>* Decode<ObjectArray<Object>*>(JNIEnv*, jobject);
template ObjectArray<StackTraceElement>* Decode<ObjectArray<StackTraceElement>*>(JNIEnv*, jobject);
template ObjectArray<Method>* Decode<ObjectArray<Method>*>(JNIEnv*, jobject);
template String* Decode<String*>(JNIEnv*, jobject);
template Throwable* Decode<Throwable*>(JNIEnv*, jobject);
size_t NumArgArrayBytes(const char* shorty, uint32_t shorty_len) {
size_t num_bytes = 0;
for (size_t i = 1; i < shorty_len; ++i) {
char ch = shorty[i];
if (ch == 'D' || ch == 'J') {
num_bytes += 8;
} else if (ch == 'L') {
// Argument is a reference or an array. The shorty descriptor
// does not distinguish between these types.
num_bytes += sizeof(Object*);
} else {
num_bytes += 4;
}
}
return num_bytes;
}
class ArgArray {
public:
explicit ArgArray(Method* method) {
MethodHelper mh(method);
shorty_ = mh.GetShorty();
shorty_len_ = mh.GetShortyLength();
if (shorty_len_ - 1 < kSmallArgArraySize) {
arg_array_ = small_arg_array_;
} else {
large_arg_array_.reset(new JValue[shorty_len_ - 1]);
arg_array_ = large_arg_array_.get();
}
}
JValue* get() {
return arg_array_;
}
void BuildArgArray(JNIEnv* public_env, va_list ap) {
JNIEnvExt* env = reinterpret_cast<JNIEnvExt*>(public_env);
for (size_t i = 1, offset = 0; i < shorty_len_; ++i, ++offset) {
switch (shorty_[i]) {
case 'Z':
case 'B':
case 'C':
case 'S':
case 'I':
arg_array_[offset].i = va_arg(ap, jint);
break;
case 'F':
arg_array_[offset].f = va_arg(ap, jdouble);
break;
case 'L':
arg_array_[offset].l = DecodeObj(env, va_arg(ap, jobject));
break;
case 'D':
arg_array_[offset].d = va_arg(ap, jdouble);
break;
case 'J':
arg_array_[offset].j = va_arg(ap, jlong);
break;
}
}
}
void BuildArgArray(JNIEnv* public_env, jvalue* args) {
JNIEnvExt* env = reinterpret_cast<JNIEnvExt*>(public_env);
for (size_t i = 1, offset = 0; i < shorty_len_; ++i, ++offset) {
switch (shorty_[i]) {
case 'Z':
case 'B':
case 'C':
case 'S':
case 'I':
arg_array_[offset].i = args[offset].i;
break;
case 'F':
arg_array_[offset].f = args[offset].f;
break;
case 'L':
arg_array_[offset].l = DecodeObj(env, args[offset].l);
break;
case 'D':
arg_array_[offset].d = args[offset].d;
break;
case 'J':
arg_array_[offset].j = args[offset].j;
break;
}
}
}
private:
enum { kSmallArgArraySize = 16 };
const char* shorty_;
uint32_t shorty_len_;
JValue* arg_array_;
JValue small_arg_array_[kSmallArgArraySize];
UniquePtr<JValue[]> large_arg_array_;
};
static jweak AddWeakGlobalReference(ScopedJniThreadState& ts, Object* obj) {
if (obj == NULL) {
return NULL;
}
JavaVMExt* vm = ts.Vm();
IndirectReferenceTable& weak_globals = vm->weak_globals;
MutexLock mu(vm->weak_globals_lock);
IndirectRef ref = weak_globals.Add(IRT_FIRST_SEGMENT, obj);
return reinterpret_cast<jweak>(ref);
}
// For internal use.
template<typename T>
static T Decode(ScopedJniThreadState& ts, jobject obj) {
return reinterpret_cast<T>(ts.Self()->DecodeJObject(obj));
}
static JValue InvokeWithArgArray(JNIEnv* public_env, Object* receiver, Method* method, JValue* args) {
JNIEnvExt* env = reinterpret_cast<JNIEnvExt*>(public_env);
JValue result = { 0 };
method->Invoke(env->self, receiver, args, &result);
return result;
}
static JValue InvokeWithVarArgs(JNIEnv* public_env, jobject obj, jmethodID mid, va_list args) {
JNIEnvExt* env = reinterpret_cast<JNIEnvExt*>(public_env);
Object* receiver = DecodeObj(env, obj);
Method* method = DecodeMethod(mid);
ArgArray arg_array(method);
arg_array.BuildArgArray(env, args);
return InvokeWithArgArray(env, receiver, method, arg_array.get());
}
static Method* FindVirtualMethod(Object* receiver, Method* method) {
return receiver->GetClass()->FindVirtualMethodForVirtualOrInterface(method);
}
static JValue InvokeVirtualOrInterfaceWithJValues(JNIEnv* public_env, jobject obj, jmethodID mid,
jvalue* args) {
JNIEnvExt* env = reinterpret_cast<JNIEnvExt*>(public_env);
Object* receiver = DecodeObj(env, obj);
Method* method = FindVirtualMethod(receiver, DecodeMethod(mid));
ArgArray arg_array(method);
arg_array.BuildArgArray(env, args);
return InvokeWithArgArray(env, receiver, method, arg_array.get());
}
static JValue InvokeVirtualOrInterfaceWithVarArgs(JNIEnv* public_env, jobject obj, jmethodID mid,
va_list args) {
JNIEnvExt* env = reinterpret_cast<JNIEnvExt*>(public_env);
Object* receiver = DecodeObj(env, obj);
Method* method = FindVirtualMethod(receiver, DecodeMethod(mid));
ArgArray arg_array(method);
arg_array.BuildArgArray(env, args);
return InvokeWithArgArray(env, receiver, method, arg_array.get());
}
// 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(ScopedJniThreadState& ts, Class* c, const char* name, const char* sig, const char* kind) {
ts.Self()->ThrowNewExceptionF("Ljava/lang/NoSuchMethodError;",
"no %s method \"%s.%s%s\"", kind, ClassHelper(c).GetDescriptor(), name, sig);
}
static jmethodID FindMethodID(ScopedJniThreadState& ts, jclass jni_class, const char* name, const char* sig, bool is_static) {
Class* c = Decode<Class*>(ts, jni_class);
if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(c, true)) {
return NULL;
}
Method* method = NULL;
if (is_static) {
method = c->FindDirectMethod(name, sig);
} else {
method = c->FindVirtualMethod(name, sig);
if (method == NULL) {
// No virtual method matching the signature. Search declared
// private methods and constructors.
method = c->FindDeclaredDirectMethod(name, sig);
}
}
if (method == NULL || method->IsStatic() != is_static) {
ThrowNoSuchMethodError(ts, c, name, sig, is_static ? "static" : "non-static");
return NULL;
}
return EncodeMethod(method);
}
static const ClassLoader* GetClassLoader(Thread* self) {
Frame frame = self->GetTopOfStack();
Method* method = frame.GetMethod();
if (method == NULL || PrettyMethod(method, false) == "java.lang.Runtime.nativeLoad") {
return self->GetClassLoaderOverride();
}
return method->GetDeclaringClass()->GetClassLoader();
}
static jfieldID FindFieldID(ScopedJniThreadState& ts, jclass jni_class, const char* name, const char* sig, bool is_static) {
Class* c = Decode<Class*>(ts, jni_class);
if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(c, true)) {
return NULL;
}
Field* field = NULL;
Class* field_type;
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
if (sig[1] != '\0') {
const ClassLoader* cl = GetClassLoader(ts.Self());
field_type = class_linker->FindClass(sig, cl);
} else {
field_type = class_linker->FindPrimitiveClass(*sig);
}
if (field_type == NULL) {
// Failed to find type from the signature of the field.
DCHECK(ts.Self()->IsExceptionPending());
ts.Self()->ClearException();
ts.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, ClassHelper(c).GetDescriptor());
return NULL;
}
if (is_static) {
field = c->FindStaticField(name, ClassHelper(field_type).GetDescriptor());
} else {
field = c->FindInstanceField(name, ClassHelper(field_type).GetDescriptor());
}
if (field == NULL) {
ts.Self()->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;",
"no \"%s\" field \"%s\" in class \"%s\" or its superclasses", sig,
name, ClassHelper(c).GetDescriptor());
return NULL;
}
return EncodeField(field);
}
static void PinPrimitiveArray(ScopedJniThreadState& ts, const Array* array) {
JavaVMExt* vm = ts.Vm();
MutexLock mu(vm->pins_lock);
vm->pin_table.Add(array);
}
static void UnpinPrimitiveArray(ScopedJniThreadState& ts, const Array* array) {
JavaVMExt* vm = ts.Vm();
MutexLock mu(vm->pins_lock);
vm->pin_table.Remove(array);
}
template<typename JniT, typename ArtT>
static JniT NewPrimitiveArray(ScopedJniThreadState& ts, jsize length) {
CHECK_GE(length, 0); // TODO: ReportJniError
ArtT* result = ArtT::Alloc(length);
return AddLocalReference<JniT>(ts.Env(), result);
}
template <typename ArrayT, typename CArrayT, typename ArtArrayT>
static CArrayT GetPrimitiveArray(ScopedJniThreadState& ts, ArrayT java_array, jboolean* is_copy) {
ArtArrayT* array = Decode<ArtArrayT*>(ts, java_array);
PinPrimitiveArray(ts, array);
if (is_copy != NULL) {
*is_copy = JNI_FALSE;
}
return array->GetData();
}
template <typename ArrayT>
static void ReleasePrimitiveArray(ScopedJniThreadState& ts, ArrayT java_array, jint mode) {
if (mode != JNI_COMMIT) {
Array* array = Decode<Array*>(ts, java_array);
UnpinPrimitiveArray(ts, array);
}
}
static void ThrowAIOOBE(ScopedJniThreadState& ts, Array* array, jsize start, jsize length, const char* identifier) {
std::string type(PrettyTypeOf(array));
ts.Self()->ThrowNewExceptionF("Ljava/lang/ArrayIndexOutOfBoundsException;",
"%s offset=%d length=%d %s.length=%d",
type.c_str(), start, length, identifier, array->GetLength());
}
static void ThrowSIOOBE(ScopedJniThreadState& ts, jsize start, jsize length, jsize array_length) {
ts.Self()->ThrowNewExceptionF("Ljava/lang/StringIndexOutOfBoundsException;",
"offset=%d length=%d string.length()=%d", start, length, array_length);
}
template <typename JavaArrayT, typename JavaT, typename ArrayT>
static void GetPrimitiveArrayRegion(ScopedJniThreadState& ts, JavaArrayT java_array, jsize start, jsize length, JavaT* buf) {
ArrayT* array = Decode<ArrayT*>(ts, java_array);
if (start < 0 || length < 0 || start + length > array->GetLength()) {
ThrowAIOOBE(ts, array, start, length, "src");
} else {
JavaT* data = array->GetData();
memcpy(buf, data + start, length * sizeof(JavaT));
}
}
template <typename JavaArrayT, typename JavaT, typename ArrayT>
static void SetPrimitiveArrayRegion(ScopedJniThreadState& ts, JavaArrayT java_array, jsize start, jsize length, const JavaT* buf) {
ArrayT* array = Decode<ArrayT*>(ts, java_array);
if (start < 0 || length < 0 || start + length > array->GetLength()) {
ThrowAIOOBE(ts, array, start, length, "dst");
} else {
JavaT* data = array->GetData();
memcpy(data + start, buf, length * sizeof(JavaT));
}
}
static jclass InitDirectByteBufferClass(JNIEnv* env) {
ScopedLocalRef<jclass> buffer_class(env, env->FindClass("java/nio/ReadWriteDirectByteBuffer"));
CHECK(buffer_class.get() != NULL);
return reinterpret_cast<jclass>(env->NewGlobalRef(buffer_class.get()));
}
static jclass GetDirectByteBufferClass(JNIEnv* env) {
static jclass buffer_class = InitDirectByteBufferClass(env);
return buffer_class;
}
static jint JII_AttachCurrentThread(JavaVM* vm, JNIEnv** p_env, void* raw_args, bool as_daemon) {
if (vm == NULL || p_env == NULL) {
return JNI_ERR;
}
// Return immediately if we're already attached.
Thread* self = Thread::Current();
if (self != NULL) {
*p_env = self->GetJniEnv();
return JNI_OK;
}
Runtime* runtime = reinterpret_cast<JavaVMExt*>(vm)->runtime;
// No threads allowed in zygote mode.
if (runtime->IsZygote()) {
LOG(ERROR) << "Attempt to attach a thread in the zygote";
return JNI_ERR;
}
JavaVMAttachArgs* args = static_cast<JavaVMAttachArgs*>(raw_args);
const char* thread_name = NULL;
Object* thread_group = NULL;
if (args != NULL) {
CHECK_GE(args->version, JNI_VERSION_1_2);
thread_name = args->name;
thread_group = static_cast<Thread*>(NULL)->DecodeJObject(args->group);
}
runtime->AttachCurrentThread(thread_name, as_daemon, thread_group);
*p_env = Thread::Current()->GetJniEnv();
return JNI_OK;
}
class SharedLibrary {
public:
SharedLibrary(const std::string& path, void* handle, Object* class_loader)
: path_(path),
handle_(handle),
class_loader_(class_loader),
jni_on_load_lock_("JNI_OnLoad lock"),
jni_on_load_cond_("JNI_OnLoad"),
jni_on_load_thread_id_(Thread::Current()->GetThinLockId()),
jni_on_load_result_(kPending) {
}
Object* GetClassLoader() {
return class_loader_;
}
std::string GetPath() {
return path_;
}
/*
* Check the result of an earlier call to JNI_OnLoad on this library.
* If the call has not yet finished in another thread, wait for it.
*/
bool CheckOnLoadResult() {
Thread* self = Thread::Current();
if (jni_on_load_thread_id_ == self->GetThinLockId()) {
// Check this so we don't end up waiting for ourselves. We need
// to return "true" so the caller can continue.
LOG(INFO) << *self << " recursive attempt to load library "
<< "\"" << path_ << "\"";
return true;
}
MutexLock mu(jni_on_load_lock_);
while (jni_on_load_result_ == kPending) {
VLOG(jni) << "[" << *self << " waiting for \"" << path_ << "\" "
<< "JNI_OnLoad...]";
ScopedThreadStateChange tsc(self, Thread::kVmWait);
jni_on_load_cond_.Wait(jni_on_load_lock_);
}
bool okay = (jni_on_load_result_ == kOkay);
VLOG(jni) << "[Earlier JNI_OnLoad for \"" << path_ << "\" "
<< (okay ? "succeeded" : "failed") << "]";
return okay;
}
void SetResult(bool result) {
jni_on_load_result_ = result ? kOkay : kFailed;
jni_on_load_thread_id_ = 0;
// Broadcast a wakeup to anybody sleeping on the condition variable.
MutexLock mu(jni_on_load_lock_);
jni_on_load_cond_.Broadcast();
}
void* FindSymbol(const std::string& symbol_name) {
return dlsym(handle_, symbol_name.c_str());
}
private:
enum JNI_OnLoadState {
kPending,
kFailed,
kOkay,
};
// Path to library "/system/lib/libjni.so".
std::string path_;
// The void* returned by dlopen(3).
void* handle_;
// The ClassLoader this library is associated with.
Object* class_loader_;
// Guards remaining items.
Mutex jni_on_load_lock_;
// Wait for JNI_OnLoad in other thread.
ConditionVariable jni_on_load_cond_;
// Recursive invocation guard.
uint32_t jni_on_load_thread_id_;
// Result of earlier JNI_OnLoad call.
JNI_OnLoadState jni_on_load_result_;
};
// This exists mainly to keep implementation details out of the header file.
class Libraries {
public:
Libraries() {
}
~Libraries() {
STLDeleteValues(&libraries_);
}
SharedLibrary* Get(const std::string& path) {
return libraries_[path];
}
void Put(const std::string& path, SharedLibrary* library) {
libraries_[path] = library;
}
// See section 11.3 "Linking Native Methods" of the JNI spec.
void* FindNativeMethod(const Method* m, std::string& detail) {
std::string jni_short_name(JniShortName(m));
std::string jni_long_name(JniLongName(m));
const ClassLoader* declaring_class_loader = m->GetDeclaringClass()->GetClassLoader();
for (It it = libraries_.begin(); it != libraries_.end(); ++it) {
SharedLibrary* library = it->second;
if (library->GetClassLoader() != declaring_class_loader) {
// We only search libraries loaded by the appropriate ClassLoader.
continue;
}
// Try the short name then the long name...
void* fn = library->FindSymbol(jni_short_name);
if (fn == NULL) {
fn = library->FindSymbol(jni_long_name);
}
if (fn != NULL) {
VLOG(jni) << "[Found native code for " << PrettyMethod(m)
<< " in \"" << library->GetPath() << "\"]";
return fn;
}
}
detail += "No implementation found for ";
detail += PrettyMethod(m);
detail += " (tried " + jni_short_name + " and " + jni_long_name + ")";
LOG(ERROR) << detail;
return NULL;
}
private:
typedef std::map<std::string, SharedLibrary*>::iterator It; // TODO: C++0x auto
std::map<std::string, SharedLibrary*> libraries_;
};
JValue InvokeWithJValues(JNIEnv* public_env, jobject obj, jmethodID mid, jvalue* args) {
JNIEnvExt* env = reinterpret_cast<JNIEnvExt*>(public_env);
Object* receiver = Decode<Object*>(env, obj);
Method* method = DecodeMethod(mid);
ArgArray arg_array(method);
arg_array.BuildArgArray(env, args);
return InvokeWithArgArray(env, receiver, method, arg_array.get());
}
JValue InvokeWithJValues(Thread* self, Object* receiver, Method* m, JValue* args) {
return InvokeWithArgArray(self->GetJniEnv(), receiver, m, args);
}
class JNI {
public:
static jint GetVersion(JNIEnv* env) {
ScopedJniThreadState ts(env);
return JNI_VERSION_1_6;
}
static jclass DefineClass(JNIEnv* env, const char*, jobject, const jbyte*, jsize) {
ScopedJniThreadState ts(env);
LOG(WARNING) << "JNI DefineClass is not supported";
return NULL;
}
static jclass FindClass(JNIEnv* env, const char* name) {
ScopedJniThreadState ts(env);
Runtime* runtime = Runtime::Current();
ClassLinker* class_linker = runtime->GetClassLinker();
std::string descriptor(NormalizeJniClassDescriptor(name));
Class* c = NULL;
if (runtime->IsStarted()) {
const ClassLoader* cl = GetClassLoader(ts.Self());
c = class_linker->FindClass(descriptor.c_str(), cl);
} else {
c = class_linker->FindSystemClass(descriptor.c_str());
}
return AddLocalReference<jclass>(env, c);
}
static jmethodID FromReflectedMethod(JNIEnv* env, jobject java_method) {
ScopedJniThreadState ts(env);
Method* method = Decode<Method*>(ts, java_method);
return EncodeMethod(method);
}
static jfieldID FromReflectedField(JNIEnv* env, jobject java_field) {
ScopedJniThreadState ts(env);
Field* field = Decode<Field*>(ts, java_field);
return EncodeField(field);
}
static jobject ToReflectedMethod(JNIEnv* env, jclass, jmethodID mid, jboolean) {
ScopedJniThreadState ts(env);
Method* method = DecodeMethod(mid);
return AddLocalReference<jobject>(env, method);
}
static jobject ToReflectedField(JNIEnv* env, jclass, jfieldID fid, jboolean) {
ScopedJniThreadState ts(env);
Field* field = DecodeField(fid);
return AddLocalReference<jobject>(env, field);
}
static jclass GetObjectClass(JNIEnv* env, jobject java_object) {
ScopedJniThreadState ts(env);
Object* o = Decode<Object*>(ts, java_object);
return AddLocalReference<jclass>(env, o->GetClass());
}
static jclass GetSuperclass(JNIEnv* env, jclass java_class) {
ScopedJniThreadState ts(env);
Class* c = Decode<Class*>(ts, java_class);
return AddLocalReference<jclass>(env, c->GetSuperClass());
}
static jboolean IsAssignableFrom(JNIEnv* env, jclass java_class1, jclass java_class2) {
ScopedJniThreadState ts(env);
Class* c1 = Decode<Class*>(ts, java_class1);
Class* c2 = Decode<Class*>(ts, java_class2);
return c1->IsAssignableFrom(c2) ? JNI_TRUE : JNI_FALSE;
}
static jboolean IsInstanceOf(JNIEnv* env, jobject jobj, jclass java_class) {
ScopedJniThreadState ts(env);
CHECK_NE(static_cast<jclass>(NULL), java_class); // TODO: ReportJniError
if (jobj == NULL) {
// Note: JNI is different from regular Java instanceof in this respect
return JNI_TRUE;
} else {
Object* obj = Decode<Object*>(ts, jobj);
Class* c = Decode<Class*>(ts, java_class);
return obj->InstanceOf(c) ? JNI_TRUE : JNI_FALSE;
}
}
static jint Throw(JNIEnv* env, jthrowable java_exception) {
ScopedJniThreadState ts(env);
Throwable* exception = Decode<Throwable*>(ts, java_exception);
if (exception == NULL) {
return JNI_ERR;
}
ts.Self()->SetException(exception);
return JNI_OK;
}
static jint ThrowNew(JNIEnv* env, jclass c, const char* msg) {
ScopedJniThreadState ts(env);
// TODO: check for a pending exception to decide what constructor to call.
jmethodID mid = ((msg != NULL)
? env->GetMethodID(c, "<init>", "(Ljava/lang/String;)V")
: env->GetMethodID(c, "<init>", "()V"));
if (mid == NULL) {
return JNI_ERR;
}
ScopedLocalRef<jstring> s(env, env->NewStringUTF(msg));
if (msg != NULL && s.get() == NULL) {
return JNI_ERR;
}
jvalue args[1];
args[0].l = s.get();
ScopedLocalRef<jthrowable> exception(env, reinterpret_cast<jthrowable>(env->NewObjectA(c, mid, args)));
if (exception.get() == NULL) {
return JNI_ERR;
}
ts.Self()->SetException(Decode<Throwable*>(ts, exception.get()));
return JNI_OK;
}
static jboolean ExceptionCheck(JNIEnv* env) {
ScopedJniThreadState ts(env);
return ts.Self()->IsExceptionPending() ? JNI_TRUE : JNI_FALSE;
}
static void ExceptionClear(JNIEnv* env) {
ScopedJniThreadState ts(env);
ts.Self()->ClearException();
}
static void ExceptionDescribe(JNIEnv* env) {
ScopedJniThreadState ts(env);
Thread* self = ts.Self();
Throwable* original_exception = self->GetException();
self->ClearException();
ScopedLocalRef<jthrowable> exception(env, AddLocalReference<jthrowable>(env, original_exception));
ScopedLocalRef<jclass> exception_class(env, env->GetObjectClass(exception.get()));
jmethodID mid = env->GetMethodID(exception_class.get(), "printStackTrace", "()V");
if (mid == NULL) {
LOG(WARNING) << "JNI WARNING: no printStackTrace()V in "
<< PrettyTypeOf(original_exception);
} else {
env->CallVoidMethod(exception.get(), mid);
if (self->IsExceptionPending()) {
LOG(WARNING) << "JNI WARNING: " << PrettyTypeOf(self->GetException())
<< " thrown while calling printStackTrace";
self->ClearException();
}
}
self->SetException(original_exception);
}
static jthrowable ExceptionOccurred(JNIEnv* env) {
ScopedJniThreadState ts(env);
Object* exception = ts.Self()->GetException();
return (exception != NULL) ? AddLocalReference<jthrowable>(env, exception) : NULL;
}
static void FatalError(JNIEnv* env, const char* msg) {
ScopedJniThreadState ts(env);
LOG(FATAL) << "JNI FatalError called: " << msg;
}
static jint PushLocalFrame(JNIEnv* env, jint capacity) {
ScopedJniThreadState ts(env);
if (EnsureLocalCapacity(ts, capacity, "PushLocalFrame") != JNI_OK) {
return JNI_ERR;
}
ts.Env()->PushFrame(capacity);
return JNI_OK;
}
static jobject PopLocalFrame(JNIEnv* env, jobject java_survivor) {
ScopedJniThreadState ts(env);
Object* survivor = Decode<Object*>(ts, java_survivor);
ts.Env()->PopFrame();
return AddLocalReference<jobject>(env, survivor);
}
static jint EnsureLocalCapacity(JNIEnv* env, jint desired_capacity) {
ScopedJniThreadState ts(env);
return EnsureLocalCapacity(ts, desired_capacity, "EnsureLocalCapacity");
}
static jint EnsureLocalCapacity(ScopedJniThreadState& ts, jint desired_capacity, const char* caller) {
// TODO: we should try to expand the table if necessary.
if (desired_capacity < 1 || 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.
size_t capacity = ts.Env()->locals.Capacity();
bool okay = (static_cast<jint>(kLocalsMax - capacity) >= desired_capacity);
if (!okay) {
ts.Self()->ThrowOutOfMemoryError(caller);
}
return okay ? JNI_OK : JNI_ERR;
}
static jobject NewGlobalRef(JNIEnv* env, jobject obj) {
ScopedJniThreadState ts(env);
if (obj == NULL) {
return NULL;
}
JavaVMExt* vm = ts.Vm();
IndirectReferenceTable& globals = vm->globals;
MutexLock mu(vm->globals_lock);
IndirectRef ref = globals.Add(IRT_FIRST_SEGMENT, Decode<Object*>(ts, obj));
return reinterpret_cast<jobject>(ref);
}
static void DeleteGlobalRef(JNIEnv* env, jobject obj) {
ScopedJniThreadState ts(env);
if (obj == NULL) {
return;
}
JavaVMExt* vm = ts.Vm();
IndirectReferenceTable& globals = vm->globals;
MutexLock mu(vm->globals_lock);
if (!globals.Remove(IRT_FIRST_SEGMENT, obj)) {
LOG(WARNING) << "JNI WARNING: DeleteGlobalRef(" << obj << ") "
<< "failed to find entry";
}
}
static jweak NewWeakGlobalRef(JNIEnv* env, jobject obj) {
ScopedJniThreadState ts(env);
return AddWeakGlobalReference(ts, Decode<Object*>(ts, obj));
}
static void DeleteWeakGlobalRef(JNIEnv* env, jweak obj) {
ScopedJniThreadState ts(env);
if (obj == NULL) {
return;
}
JavaVMExt* vm = ts.Vm();
IndirectReferenceTable& weak_globals = vm->weak_globals;
MutexLock mu(vm->weak_globals_lock);
if (!weak_globals.Remove(IRT_FIRST_SEGMENT, obj)) {
LOG(WARNING) << "JNI WARNING: DeleteWeakGlobalRef(" << obj << ") "
<< "failed to find entry";
}
}
static jobject NewLocalRef(JNIEnv* env, jobject obj) {
ScopedJniThreadState ts(env);
if (obj == NULL) {
return NULL;
}
IndirectReferenceTable& locals = ts.Env()->locals;
uint32_t cookie = ts.Env()->local_ref_cookie;
IndirectRef ref = locals.Add(cookie, Decode<Object*>(ts, obj));
return reinterpret_cast<jobject>(ref);
}
static void DeleteLocalRef(JNIEnv* env, jobject obj) {
ScopedJniThreadState ts(env);
if (obj == NULL) {
return;
}
IndirectReferenceTable& locals = ts.Env()->locals;
uint32_t cookie = ts.Env()->local_ref_cookie;
if (!locals.Remove(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) {
ScopedJniThreadState ts(env);
return (Decode<Object*>(ts, obj1) == Decode<Object*>(ts, obj2))
? JNI_TRUE : JNI_FALSE;
}
static jobject AllocObject(JNIEnv* env, jclass java_class) {
ScopedJniThreadState ts(env);
Class* c = Decode<Class*>(ts, java_class);
if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(c, true)) {
return NULL;
}
return AddLocalReference<jobject>(env, c->AllocObject());
}
static jobject NewObject(JNIEnv* env, jclass c, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list args;
va_start(args, mid);
jobject result = NewObjectV(env, c, mid, args);
va_end(args);
return result;
}
static jobject NewObjectV(JNIEnv* env, jclass java_class, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
Class* c = Decode<Class*>(ts, java_class);
if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(c, true)) {
return NULL;
}
Object* result = c->AllocObject();
if (result == NULL) {
return NULL;
}
jobject local_result = AddLocalReference<jobject>(env, result);
CallNonvirtualVoidMethodV(env, local_result, java_class, mid, args);
if (!ts.Self()->IsExceptionPending()) {
return local_result;
} else {
return NULL;
}
}
static jobject NewObjectA(JNIEnv* env, jclass java_class, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
Class* c = Decode<Class*>(ts, java_class);
if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(c, true)) {
return NULL;
}
Object* result = c->AllocObject();
if (result == NULL) {
return NULL;
}
jobject local_result = AddLocalReference<jobjectArray>(env, result);
CallNonvirtualVoidMethodA(env, local_result, java_class, mid, args);
if (!ts.Self()->IsExceptionPending()) {
return local_result;
} else {
return NULL;
}
}
static jmethodID GetMethodID(JNIEnv* env, jclass c, const char* name, const char* sig) {
ScopedJniThreadState ts(env);
return FindMethodID(ts, c, name, sig, false);
}
static jmethodID GetStaticMethodID(JNIEnv* env, jclass c, const char* name, const char* sig) {
ScopedJniThreadState ts(env);
return FindMethodID(ts, c, name, sig, true);
}
static jobject CallObjectMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, ap);
va_end(ap);
return AddLocalReference<jobject>(env, result.l);
}
static jobject CallObjectMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
JValue result = InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args);
return AddLocalReference<jobject>(env, result.l);
}
static jobject CallObjectMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
JValue result = InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args);
return AddLocalReference<jobject>(env, result.l);
}
static jboolean CallBooleanMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.z;
}
static jboolean CallBooleanMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).z;
}
static jboolean CallBooleanMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).z;
}
static jbyte CallByteMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.b;
}
static jbyte CallByteMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).b;
}
static jbyte CallByteMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).b;
}
static jchar CallCharMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.c;
}
static jchar CallCharMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).c;
}
static jchar CallCharMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).c;
}
static jdouble CallDoubleMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.d;
}
static jdouble CallDoubleMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).d;
}
static jdouble CallDoubleMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).d;
}
static jfloat CallFloatMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.f;
}
static jfloat CallFloatMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).f;
}
static jfloat CallFloatMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).f;
}
static jint CallIntMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.i;
}
static jint CallIntMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).i;
}
static jint CallIntMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).i;
}
static jlong CallLongMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.j;
}
static jlong CallLongMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).j;
}
static jlong CallLongMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).j;
}
static jshort CallShortMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.s;
}
static jshort CallShortMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).s;
}
static jshort CallShortMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).s;
}
static void CallVoidMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, ap);
va_end(ap);
}
static void CallVoidMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args);
}
static void CallVoidMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args);
}
static jobject CallNonvirtualObjectMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, obj, mid, ap);
jobject local_result = AddLocalReference<jobject>(env, result.l);
va_end(ap);
return local_result;
}
static jobject CallNonvirtualObjectMethodV(JNIEnv* env,
jobject obj, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
JValue result = InvokeWithVarArgs(env, obj, mid, args);
return AddLocalReference<jobject>(env, result.l);
}
static jobject CallNonvirtualObjectMethodA(JNIEnv* env,
jobject obj, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
JValue result = InvokeWithJValues(env, obj, mid, args);
return AddLocalReference<jobject>(env, result.l);
}
static jboolean CallNonvirtualBooleanMethod(JNIEnv* env,
jobject obj, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.z;
}
static jboolean CallNonvirtualBooleanMethodV(JNIEnv* env,
jobject obj, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, obj, mid, args).z;
}
static jboolean CallNonvirtualBooleanMethodA(JNIEnv* env,
jobject obj, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, obj, mid, args).z;
}
static jbyte CallNonvirtualByteMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.b;
}
static jbyte CallNonvirtualByteMethodV(JNIEnv* env,
jobject obj, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, obj, mid, args).b;
}
static jbyte CallNonvirtualByteMethodA(JNIEnv* env,
jobject obj, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, obj, mid, args).b;
}
static jchar CallNonvirtualCharMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.c;
}
static jchar CallNonvirtualCharMethodV(JNIEnv* env,
jobject obj, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, obj, mid, args).c;
}
static jchar CallNonvirtualCharMethodA(JNIEnv* env,
jobject obj, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, obj, mid, args).c;
}
static jshort CallNonvirtualShortMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.s;
}
static jshort CallNonvirtualShortMethodV(JNIEnv* env,
jobject obj, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, obj, mid, args).s;
}
static jshort CallNonvirtualShortMethodA(JNIEnv* env,
jobject obj, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, obj, mid, args).s;
}
static jint CallNonvirtualIntMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.i;
}
static jint CallNonvirtualIntMethodV(JNIEnv* env,
jobject obj, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, obj, mid, args).i;
}
static jint CallNonvirtualIntMethodA(JNIEnv* env,
jobject obj, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, obj, mid, args).i;
}
static jlong CallNonvirtualLongMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.j;
}
static jlong CallNonvirtualLongMethodV(JNIEnv* env,
jobject obj, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, obj, mid, args).j;
}
static jlong CallNonvirtualLongMethodA(JNIEnv* env,
jobject obj, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, obj, mid, args).j;
}
static jfloat CallNonvirtualFloatMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.f;
}
static jfloat CallNonvirtualFloatMethodV(JNIEnv* env,
jobject obj, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, obj, mid, args).f;
}
static jfloat CallNonvirtualFloatMethodA(JNIEnv* env,
jobject obj, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, obj, mid, args).f;
}
static jdouble CallNonvirtualDoubleMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, obj, mid, ap);
va_end(ap);
return result.d;
}
static jdouble CallNonvirtualDoubleMethodV(JNIEnv* env,
jobject obj, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, obj, mid, args).d;
}
static jdouble CallNonvirtualDoubleMethodA(JNIEnv* env,
jobject obj, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, obj, mid, args).d;
}
static void CallNonvirtualVoidMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
InvokeWithVarArgs(env, obj, mid, ap);
va_end(ap);
}
static void CallNonvirtualVoidMethodV(JNIEnv* env,
jobject obj, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
InvokeWithVarArgs(env, obj, mid, args);
}
static void CallNonvirtualVoidMethodA(JNIEnv* env,
jobject obj, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
InvokeWithJValues(env, obj, mid, args);
}
static jfieldID GetFieldID(JNIEnv* env, jclass c, const char* name, const char* sig) {
ScopedJniThreadState ts(env);
return FindFieldID(ts, c, name, sig, false);
}
static jfieldID GetStaticFieldID(JNIEnv* env, jclass c, const char* name, const char* sig) {
ScopedJniThreadState ts(env);
return FindFieldID(ts, c, name, sig, true);
}
static jobject GetObjectField(JNIEnv* env, jobject obj, jfieldID fid) {
ScopedJniThreadState ts(env);
Object* o = Decode<Object*>(ts, obj);
Field* f = DecodeField(fid);
return AddLocalReference<jobject>(env, f->GetObject(o));
}
static jobject GetStaticObjectField(JNIEnv* env, jclass, jfieldID fid) {
ScopedJniThreadState ts(env);
Field* f = DecodeField(fid);
return AddLocalReference<jobject>(env, f->GetObject(NULL));
}
static void SetObjectField(JNIEnv* env, jobject java_object, jfieldID fid, jobject java_value) {
ScopedJniThreadState ts(env);
Object* o = Decode<Object*>(ts, java_object);
Object* v = Decode<Object*>(ts, java_value);
Field* f = DecodeField(fid);
f->SetObject(o, v);
}
static void SetStaticObjectField(JNIEnv* env, jclass, jfieldID fid, jobject java_value) {
ScopedJniThreadState ts(env);
Object* v = Decode<Object*>(ts, java_value);
Field* f = DecodeField(fid);
f->SetObject(NULL, v);
}
#define GET_PRIMITIVE_FIELD(fn, instance) \
ScopedJniThreadState ts(env); \
Object* o = Decode<Object*>(ts, instance); \
Field* f = DecodeField(fid); \
return f->fn(o)
#define SET_PRIMITIVE_FIELD(fn, instance, value) \
ScopedJniThreadState ts(env); \
Object* o = Decode<Object*>(ts, instance); \
Field* f = DecodeField(fid); \
f->fn(o, value)
static jboolean GetBooleanField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetBoolean, obj);
}
static jbyte GetByteField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetByte, obj);
}
static jchar GetCharField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetChar, obj);
}
static jshort GetShortField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetShort, obj);
}
static jint GetIntField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetInt, obj);
}
static jlong GetLongField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetLong, obj);
}
static jfloat GetFloatField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetFloat, obj);
}
static jdouble GetDoubleField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetDouble, obj);
}
static jboolean GetStaticBooleanField(JNIEnv* env, jclass, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetBoolean, NULL);
}
static jbyte GetStaticByteField(JNIEnv* env, jclass, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetByte, NULL);
}
static jchar GetStaticCharField(JNIEnv* env, jclass, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetChar, NULL);
}
static jshort GetStaticShortField(JNIEnv* env, jclass, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetShort, NULL);
}
static jint GetStaticIntField(JNIEnv* env, jclass, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetInt, NULL);
}
static jlong GetStaticLongField(JNIEnv* env, jclass, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetLong, NULL);
}
static jfloat GetStaticFloatField(JNIEnv* env, jclass, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetFloat, NULL);
}
static jdouble GetStaticDoubleField(JNIEnv* env, jclass, jfieldID fid) {
GET_PRIMITIVE_FIELD(GetDouble, NULL);
}
static void SetBooleanField(JNIEnv* env, jobject obj, jfieldID fid, jboolean v) {
SET_PRIMITIVE_FIELD(SetBoolean, obj, v);
}
static void SetByteField(JNIEnv* env, jobject obj, jfieldID fid, jbyte v) {
SET_PRIMITIVE_FIELD(SetByte, obj, v);
}
static void SetCharField(JNIEnv* env, jobject obj, jfieldID fid, jchar v) {
SET_PRIMITIVE_FIELD(SetChar, obj, v);
}
static void SetFloatField(JNIEnv* env, jobject obj, jfieldID fid, jfloat v) {
SET_PRIMITIVE_FIELD(SetFloat, obj, v);
}
static void SetDoubleField(JNIEnv* env, jobject obj, jfieldID fid, jdouble v) {
SET_PRIMITIVE_FIELD(SetDouble, obj, v);
}
static void SetIntField(JNIEnv* env, jobject obj, jfieldID fid, jint v) {
SET_PRIMITIVE_FIELD(SetInt, obj, v);
}
static void SetLongField(JNIEnv* env, jobject obj, jfieldID fid, jlong v) {
SET_PRIMITIVE_FIELD(SetLong, obj, v);
}
static void SetShortField(JNIEnv* env, jobject obj, jfieldID fid, jshort v) {
SET_PRIMITIVE_FIELD(SetShort, obj, v);
}
static void SetStaticBooleanField(JNIEnv* env, jclass, jfieldID fid, jboolean v) {
SET_PRIMITIVE_FIELD(SetBoolean, NULL, v);
}
static void SetStaticByteField(JNIEnv* env, jclass, jfieldID fid, jbyte v) {
SET_PRIMITIVE_FIELD(SetByte, NULL, v);
}
static void SetStaticCharField(JNIEnv* env, jclass, jfieldID fid, jchar v) {
SET_PRIMITIVE_FIELD(SetChar, NULL, v);
}
static void SetStaticFloatField(JNIEnv* env, jclass, jfieldID fid, jfloat v) {
SET_PRIMITIVE_FIELD(SetFloat, NULL, v);
}
static void SetStaticDoubleField(JNIEnv* env, jclass, jfieldID fid, jdouble v) {
SET_PRIMITIVE_FIELD(SetDouble, NULL, v);
}
static void SetStaticIntField(JNIEnv* env, jclass, jfieldID fid, jint v) {
SET_PRIMITIVE_FIELD(SetInt, NULL, v);
}
static void SetStaticLongField(JNIEnv* env, jclass, jfieldID fid, jlong v) {
SET_PRIMITIVE_FIELD(SetLong, NULL, v);
}
static void SetStaticShortField(JNIEnv* env, jclass, jfieldID fid, jshort v) {
SET_PRIMITIVE_FIELD(SetShort, NULL, v);
}
static jobject CallStaticObjectMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, NULL, mid, ap);
jobject local_result = AddLocalReference<jobject>(env, result.l);
va_end(ap);
return local_result;
}
static jobject CallStaticObjectMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
JValue result = InvokeWithVarArgs(env, NULL, mid, args);
return AddLocalReference<jobject>(env, result.l);
}
static jobject CallStaticObjectMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
JValue result = InvokeWithJValues(env, NULL, mid, args);
return AddLocalReference<jobject>(env, result.l);
}
static jboolean CallStaticBooleanMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, NULL, mid, ap);
va_end(ap);
return result.z;
}
static jboolean CallStaticBooleanMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, NULL, mid, args).z;
}
static jboolean CallStaticBooleanMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, NULL, mid, args).z;
}
static jbyte CallStaticByteMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, NULL, mid, ap);
va_end(ap);
return result.b;
}
static jbyte CallStaticByteMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, NULL, mid, args).b;
}
static jbyte CallStaticByteMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, NULL, mid, args).b;
}
static jchar CallStaticCharMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, NULL, mid, ap);
va_end(ap);
return result.c;
}
static jchar CallStaticCharMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, NULL, mid, args).c;
}
static jchar CallStaticCharMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, NULL, mid, args).c;
}
static jshort CallStaticShortMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, NULL, mid, ap);
va_end(ap);
return result.s;
}
static jshort CallStaticShortMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, NULL, mid, args).s;
}
static jshort CallStaticShortMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, NULL, mid, args).s;
}
static jint CallStaticIntMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, NULL, mid, ap);
va_end(ap);
return result.i;
}
static jint CallStaticIntMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, NULL, mid, args).i;
}
static jint CallStaticIntMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, NULL, mid, args).i;
}
static jlong CallStaticLongMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, NULL, mid, ap);
va_end(ap);
return result.j;
}
static jlong CallStaticLongMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, NULL, mid, args).j;
}
static jlong CallStaticLongMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, NULL, mid, args).j;
}
static jfloat CallStaticFloatMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, NULL, mid, ap);
va_end(ap);
return result.f;
}
static jfloat CallStaticFloatMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, NULL, mid, args).f;
}
static jfloat CallStaticFloatMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, NULL, mid, args).f;
}
static jdouble CallStaticDoubleMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
JValue result = InvokeWithVarArgs(env, NULL, mid, ap);
va_end(ap);
return result.d;
}
static jdouble CallStaticDoubleMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
return InvokeWithVarArgs(env, NULL, mid, args).d;
}
static jdouble CallStaticDoubleMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
return InvokeWithJValues(env, NULL, mid, args).d;
}
static void CallStaticVoidMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
ScopedJniThreadState ts(env);
va_list ap;
va_start(ap, mid);
InvokeWithVarArgs(env, NULL, mid, ap);
va_end(ap);
}
static void CallStaticVoidMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
ScopedJniThreadState ts(env);
InvokeWithVarArgs(env, NULL, mid, args);
}
static void CallStaticVoidMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
ScopedJniThreadState ts(env);
InvokeWithJValues(env, NULL, mid, args);
}
static jstring NewString(JNIEnv* env, const jchar* chars, jsize char_count) {
ScopedJniThreadState ts(env);
String* result = String::AllocFromUtf16(char_count, chars);
return AddLocalReference<jstring>(env, result);
}
static jstring NewStringUTF(JNIEnv* env, const char* utf) {
ScopedJniThreadState ts(env);
if (utf == NULL) {
return NULL;
}
String* result = String::AllocFromModifiedUtf8(utf);
return AddLocalReference<jstring>(env, result);
}
static jsize GetStringLength(JNIEnv* env, jstring java_string) {
ScopedJniThreadState ts(env);
return Decode<String*>(ts, java_string)->GetLength();
}
static jsize GetStringUTFLength(JNIEnv* env, jstring java_string) {
ScopedJniThreadState ts(env);
return Decode<String*>(ts, java_string)->GetUtfLength();
}
static void GetStringRegion(JNIEnv* env, jstring java_string, jsize start, jsize length, jchar* buf) {
ScopedJniThreadState ts(env);
String* s = Decode<String*>(ts, java_string);
if (start < 0 || length < 0 || start + length > s->GetLength()) {
ThrowSIOOBE(ts, start, length, s->GetLength());
} else {
const jchar* chars = s->GetCharArray()->GetData() + s->GetOffset();
memcpy(buf, chars + start, length * sizeof(jchar));
}
}
static void GetStringUTFRegion(JNIEnv* env, jstring java_string, jsize start, jsize length, char* buf) {
ScopedJniThreadState ts(env);
String* s = Decode<String*>(ts, java_string);
if (start < 0 || length < 0 || start + length > s->GetLength()) {
ThrowSIOOBE(ts, start, length, s->GetLength());
} else {
const jchar* chars = s->GetCharArray()->GetData() + s->GetOffset();
ConvertUtf16ToModifiedUtf8(buf, chars + start, length);
}
}
static const jchar* GetStringChars(JNIEnv* env, jstring java_string, jboolean* is_copy) {
ScopedJniThreadState ts(env);
String* s = Decode<String*>(ts, java_string);
const CharArray* chars = s->GetCharArray();
PinPrimitiveArray(ts, chars);
if (is_copy != NULL) {
*is_copy = JNI_FALSE;
}
return chars->GetData() + s->GetOffset();
}
static void ReleaseStringChars(JNIEnv* env, jstring java_string, const jchar*) {
ScopedJniThreadState ts(env);
UnpinPrimitiveArray(ts, Decode<String*>(ts, java_string)->GetCharArray());
}
static const jchar* GetStringCritical(JNIEnv* env, jstring java_string, jboolean* is_copy) {
ScopedJniThreadState ts(env);
return GetStringChars(env, java_string, is_copy);
}
static void ReleaseStringCritical(JNIEnv* env, jstring java_string, const jchar* chars) {
ScopedJniThreadState ts(env);
return ReleaseStringChars(env, java_string, chars);
}
static const char* GetStringUTFChars(JNIEnv* env, jstring java_string, jboolean* is_copy) {
ScopedJniThreadState ts(env);
if (java_string == NULL) {
return NULL;
}
if (is_copy != NULL) {
*is_copy = JNI_TRUE;
}
String* s = Decode<String*>(ts, java_string);
size_t byte_count = s->GetUtfLength();
char* bytes = new char[byte_count + 1];
CHECK(bytes != NULL); // bionic aborts anyway.
const uint16_t* chars = s->GetCharArray()->GetData() + s->GetOffset();
ConvertUtf16ToModifiedUtf8(bytes, chars, s->GetLength());
bytes[byte_count] = '\0';
return bytes;
}
static void ReleaseStringUTFChars(JNIEnv* env, jstring, const char* chars) {
ScopedJniThreadState ts(env);
delete[] chars;
}
static jsize GetArrayLength(JNIEnv* env, jarray java_array) {
ScopedJniThreadState ts(env);
Object* obj = Decode<Object*>(ts, java_array);
CHECK(obj->IsArrayInstance()); // TODO: ReportJniError
Array* array = obj->AsArray();
return array->GetLength();
}
static jobject GetObjectArrayElement(JNIEnv* env, jobjectArray java_array, jsize index) {
ScopedJniThreadState ts(env);
ObjectArray<Object>* array = Decode<ObjectArray<Object>*>(ts, java_array);
return AddLocalReference<jobject>(env, array->Get(index));
}
static void SetObjectArrayElement(JNIEnv* env,
jobjectArray java_array, jsize index, jobject java_value) {
ScopedJniThreadState ts(env);
ObjectArray<Object>* array = Decode<ObjectArray<Object>*>(ts, java_array);
Object* value = Decode<Object*>(ts, java_value);
array->Set(index, value);
}
static jbooleanArray NewBooleanArray(JNIEnv* env, jsize length) {
ScopedJniThreadState ts(env);
return NewPrimitiveArray<jbooleanArray, BooleanArray>(ts, length);
}
static jbyteArray NewByteArray(JNIEnv* env, jsize length) {
ScopedJniThreadState ts(env);
return NewPrimitiveArray<jbyteArray, ByteArray>(ts, length);
}
static jcharArray NewCharArray(JNIEnv* env, jsize length) {
ScopedJniThreadState ts(env);
return NewPrimitiveArray<jcharArray, CharArray>(ts, length);
}
static jdoubleArray NewDoubleArray(JNIEnv* env, jsize length) {
ScopedJniThreadState ts(env);
return NewPrimitiveArray<jdoubleArray, DoubleArray>(ts, length);
}
static jfloatArray NewFloatArray(JNIEnv* env, jsize length) {
ScopedJniThreadState ts(env);
return NewPrimitiveArray<jfloatArray, FloatArray>(ts, length);
}
static jintArray NewIntArray(JNIEnv* env, jsize length) {
ScopedJniThreadState ts(env);
return NewPrimitiveArray<jintArray, IntArray>(ts, length);
}
static jlongArray NewLongArray(JNIEnv* env, jsize length) {
ScopedJniThreadState ts(env);
return NewPrimitiveArray<jlongArray, LongArray>(ts, length);
}
static jobjectArray NewObjectArray(JNIEnv* env, jsize length, jclass element_jclass, jobject initial_element) {
ScopedJniThreadState ts(env);
CHECK_GE(length, 0); // TODO: ReportJniError
// Compute the array class corresponding to the given element class.
Class* element_class = Decode<Class*>(ts, element_jclass);
std::string descriptor;
descriptor += "[";
descriptor += ClassHelper(element_class).GetDescriptor();
// Find the class.
ScopedLocalRef<jclass> java_array_class(env, FindClass(env, descriptor.c_str()));
if (java_array_class.get() == NULL) {
return NULL;
}
// Allocate and initialize if necessary.
Class* array_class = Decode<Class*>(ts, java_array_class.get());
ObjectArray<Object>* result = ObjectArray<Object>::Alloc(array_class, length);
if (initial_element != NULL) {
Object* initial_object = Decode<Object*>(ts, initial_element);
for (jsize i = 0; i < length; ++i) {
result->Set(i, initial_object);
}
}
return AddLocalReference<jobjectArray>(env, result);
}
static jshortArray NewShortArray(JNIEnv* env, jsize length) {
ScopedJniThreadState ts(env);
return NewPrimitiveArray<jshortArray, ShortArray>(ts, length);
}
static void* GetPrimitiveArrayCritical(JNIEnv* env, jarray java_array, jboolean* is_copy) {
ScopedJniThreadState ts(env);
Array* array = Decode<Array*>(ts, java_array);
PinPrimitiveArray(ts, array);
if (is_copy != NULL) {
*is_copy = JNI_FALSE;
}
return array->GetRawData(array->GetClass()->GetComponentSize());
}
static void ReleasePrimitiveArrayCritical(JNIEnv* env, jarray array, void*, jint mode) {
ScopedJniThreadState ts(env);
ReleasePrimitiveArray(ts, array, mode);
}
static jboolean* GetBooleanArrayElements(JNIEnv* env, jbooleanArray array, jboolean* is_copy) {
ScopedJniThreadState ts(env);
return GetPrimitiveArray<jbooleanArray, jboolean*, BooleanArray>(ts, array, is_copy);
}
static jbyte* GetByteArrayElements(JNIEnv* env, jbyteArray array, jboolean* is_copy) {
ScopedJniThreadState ts(env);
return GetPrimitiveArray<jbyteArray, jbyte*, ByteArray>(ts, array, is_copy);
}
static jchar* GetCharArrayElements(JNIEnv* env, jcharArray array, jboolean* is_copy) {
ScopedJniThreadState ts(env);
return GetPrimitiveArray<jcharArray, jchar*, CharArray>(ts, array, is_copy);
}
static jdouble* GetDoubleArrayElements(JNIEnv* env, jdoubleArray array, jboolean* is_copy) {
ScopedJniThreadState ts(env);
return GetPrimitiveArray<jdoubleArray, jdouble*, DoubleArray>(ts, array, is_copy);
}
static jfloat* GetFloatArrayElements(JNIEnv* env, jfloatArray array, jboolean* is_copy) {
ScopedJniThreadState ts(env);
return GetPrimitiveArray<jfloatArray, jfloat*, FloatArray>(ts, array, is_copy);
}
static jint* GetIntArrayElements(JNIEnv* env, jintArray array, jboolean* is_copy) {
ScopedJniThreadState ts(env);
return GetPrimitiveArray<jintArray, jint*, IntArray>(ts, array, is_copy);
}
static jlong* GetLongArrayElements(JNIEnv* env, jlongArray array, jboolean* is_copy) {
ScopedJniThreadState ts(env);
return GetPrimitiveArray<jlongArray, jlong*, LongArray>(ts, array, is_copy);
}
static jshort* GetShortArrayElements(JNIEnv* env, jshortArray array, jboolean* is_copy) {
ScopedJniThreadState ts(env);
return GetPrimitiveArray<jshortArray, jshort*, ShortArray>(ts, array, is_copy);
}
static void ReleaseBooleanArrayElements(JNIEnv* env, jbooleanArray array, jboolean*, jint mode) {
ScopedJniThreadState ts(env);
ReleasePrimitiveArray(ts, array, mode);
}
static void ReleaseByteArrayElements(JNIEnv* env, jbyteArray array, jbyte*, jint mode) {
ScopedJniThreadState ts(env);
ReleasePrimitiveArray(ts, array, mode);
}
static void ReleaseCharArrayElements(JNIEnv* env, jcharArray array, jchar*, jint mode) {
ScopedJniThreadState ts(env);
ReleasePrimitiveArray(ts, array, mode);
}
static void ReleaseDoubleArrayElements(JNIEnv* env, jdoubleArray array, jdouble*, jint mode) {
ScopedJniThreadState ts(env);
ReleasePrimitiveArray(ts, array, mode);
}
static void ReleaseFloatArrayElements(JNIEnv* env, jfloatArray array, jfloat*, jint mode) {
ScopedJniThreadState ts(env);
ReleasePrimitiveArray(ts, array, mode);
}
static void ReleaseIntArrayElements(JNIEnv* env, jintArray array, jint*, jint mode) {
ScopedJniThreadState ts(env);
ReleasePrimitiveArray(ts, array, mode);
}
static void ReleaseLongArrayElements(JNIEnv* env, jlongArray array, jlong*, jint mode) {
ScopedJniThreadState ts(env);
ReleasePrimitiveArray(ts, array, mode);
}
static void ReleaseShortArrayElements(JNIEnv* env, jshortArray array, jshort*, jint mode) {
ScopedJniThreadState ts(env);
ReleasePrimitiveArray(ts, array, mode);
}
static void GetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length, jboolean* buf) {
ScopedJniThreadState ts(env);
GetPrimitiveArrayRegion<jbooleanArray, jboolean, BooleanArray>(ts, array, start, length, buf);
}
static void GetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length, jbyte* buf) {
ScopedJniThreadState ts(env);
GetPrimitiveArrayRegion<jbyteArray, jbyte, ByteArray>(ts, array, start, length, buf);
}
static void GetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length, jchar* buf) {
ScopedJniThreadState ts(env);
GetPrimitiveArrayRegion<jcharArray, jchar, CharArray>(ts, array, start, length, buf);
}
static void GetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length, jdouble* buf) {
ScopedJniThreadState ts(env);
GetPrimitiveArrayRegion<jdoubleArray, jdouble, DoubleArray>(ts, array, start, length, buf);
}
static void GetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length, jfloat* buf) {
ScopedJniThreadState ts(env);
GetPrimitiveArrayRegion<jfloatArray, jfloat, FloatArray>(ts, array, start, length, buf);
}
static void GetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length, jint* buf) {
ScopedJniThreadState ts(env);
GetPrimitiveArrayRegion<jintArray, jint, IntArray>(ts, array, start, length, buf);
}
static void GetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length, jlong* buf) {
ScopedJniThreadState ts(env);
GetPrimitiveArrayRegion<jlongArray, jlong, LongArray>(ts, array, start, length, buf);
}
static void GetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length, jshort* buf) {
ScopedJniThreadState ts(env);
GetPrimitiveArrayRegion<jshortArray, jshort, ShortArray>(ts, array, start, length, buf);
}
static void SetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length, const jboolean* buf) {
ScopedJniThreadState ts(env);
SetPrimitiveArrayRegion<jbooleanArray, jboolean, BooleanArray>(ts, array, start, length, buf);
}
static void SetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length, const jbyte* buf) {
ScopedJniThreadState ts(env);
SetPrimitiveArrayRegion<jbyteArray, jbyte, ByteArray>(ts, array, start, length, buf);
}
static void SetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length, const jchar* buf) {
ScopedJniThreadState ts(env);
SetPrimitiveArrayRegion<jcharArray, jchar, CharArray>(ts, array, start, length, buf);
}
static void SetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length, const jdouble* buf) {
ScopedJniThreadState ts(env);
SetPrimitiveArrayRegion<jdoubleArray, jdouble, DoubleArray>(ts, array, start, length, buf);
}
static void SetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length, const jfloat* buf) {
ScopedJniThreadState ts(env);
SetPrimitiveArrayRegion<jfloatArray, jfloat, FloatArray>(ts, array, start, length, buf);
}
static void SetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length, const jint* buf) {
ScopedJniThreadState ts(env);
SetPrimitiveArrayRegion<jintArray, jint, IntArray>(ts, array, start, length, buf);
}
static void SetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length, const jlong* buf) {
ScopedJniThreadState ts(env);
SetPrimitiveArrayRegion<jlongArray, jlong, LongArray>(ts, array, start, length, buf);
}
static void SetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length, const jshort* buf) {
ScopedJniThreadState ts(env);
SetPrimitiveArrayRegion<jshortArray, jshort, ShortArray>(ts, array, start, length, buf);
}
static jint RegisterNatives(JNIEnv* env, jclass java_class, const JNINativeMethod* methods, jint method_count) {
ScopedJniThreadState ts(env);
Class* c = Decode<Class*>(ts, java_class);
for (int i = 0; i < method_count; i++) {
const char* name = methods[i].name;
const char* sig = methods[i].signature;
if (*sig == '!') {
// TODO: fast jni. it's too noisy to log all these.
++sig;
}
Method* m = c->FindDirectMethod(name, sig);
if (m == NULL) {
m = c->FindVirtualMethod(name, sig);
}
if (m == NULL) {
LOG(INFO) << "Failed to register native method " << name << sig;
ThrowNoSuchMethodError(ts, c, name, sig, "static or non-static");
return JNI_ERR;
} else if (!m->IsNative()) {
LOG(INFO) << "Failed to register non-native method " << name << sig << " as native";
ThrowNoSuchMethodError(ts, c, name, sig, "native");
return JNI_ERR;
}
VLOG(jni) << "[Registering JNI native method " << PrettyMethod(m) << "]";
m->RegisterNative(ts.Self(), methods[i].fnPtr);
}
return JNI_OK;
}
static jint UnregisterNatives(JNIEnv* env, jclass java_class) {
ScopedJniThreadState ts(env);
Class* c = Decode<Class*>(ts, java_class);
VLOG(jni) << "[Unregistering JNI native methods for " << PrettyClass(c) << "]";
for (size_t i = 0; i < c->NumDirectMethods(); ++i) {
Method* m = c->GetDirectMethod(i);
if (m->IsNative()) {
m->UnregisterNative(ts.Self());
}
}
for (size_t i = 0; i < c->NumVirtualMethods(); ++i) {
Method* m = c->GetVirtualMethod(i);
if (m->IsNative()) {
m->UnregisterNative(ts.Self());
}
}
return JNI_OK;
}
static jint MonitorEnter(JNIEnv* env, jobject java_object) {
ScopedJniThreadState ts(env);
Object* o = Decode<Object*>(ts, java_object);
o->MonitorEnter(ts.Self());
if (ts.Self()->IsExceptionPending()) {
return JNI_ERR;
}
ts.Env()->monitors.Add(o);
return JNI_OK;
}
static jint MonitorExit(JNIEnv* env, jobject java_object) {
ScopedJniThreadState ts(env);
Object* o = Decode<Object*>(ts, java_object);
o->MonitorExit(ts.Self());
if (ts.Self()->IsExceptionPending()) {
return JNI_ERR;
}
ts.Env()->monitors.Remove(o);
return JNI_OK;
}
static jint GetJavaVM(JNIEnv* env, JavaVM** vm) {
ScopedJniThreadState ts(env);
Runtime* runtime = Runtime::Current();
if (runtime != NULL) {
*vm = runtime->GetJavaVM();
} else {
*vm = NULL;
}
return (*vm != NULL) ? JNI_OK : JNI_ERR;
}
static jobject NewDirectByteBuffer(JNIEnv* env, void* address, jlong capacity) {
ScopedJniThreadState ts(env);
// The address may not be NULL, and the capacity must be > 0.
CHECK(address != NULL); // TODO: ReportJniError
CHECK_GT(capacity, 0); // TODO: ReportJniError
jclass buffer_class = GetDirectByteBufferClass(env);
jmethodID mid = env->GetMethodID(buffer_class, "<init>", "(II)V");
if (mid == NULL) {
return NULL;
}
// At the moment, the Java side is limited to 32 bits.
CHECK_LE(reinterpret_cast<uintptr_t>(address), 0xffffffff);
CHECK_LE(capacity, 0xffffffff);
jint address_arg = reinterpret_cast<jint>(address);
jint capacity_arg = static_cast<jint>(capacity);
jobject result = env->NewObject(buffer_class, mid, address_arg, capacity_arg);
return ts.Self()->IsExceptionPending() ? NULL : result;
}
static void* GetDirectBufferAddress(JNIEnv* env, jobject java_buffer) {
ScopedJniThreadState ts(env);
static jfieldID fid = env->GetFieldID(GetDirectByteBufferClass(env), "effectiveDirectAddress", "I");
return reinterpret_cast<void*>(env->GetIntField(java_buffer, fid));
}
static jlong GetDirectBufferCapacity(JNIEnv* env, jobject java_buffer) {
ScopedJniThreadState ts(env);
static jfieldID fid = env->GetFieldID(GetDirectByteBufferClass(env), "capacity", "I");
return static_cast<jlong>(env->GetIntField(java_buffer, fid));
}
static jobjectRefType GetObjectRefType(JNIEnv* env, jobject java_object) {
ScopedJniThreadState ts(env);
CHECK(java_object != NULL); // TODO: ReportJniError
// 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:
if (ts.Env()->locals.Get(ref) != kInvalidIndirectRefObject) {
return JNILocalRefType;
}
return JNIInvalidRefType;
case kGlobal:
return JNIGlobalRefType;
case kWeakGlobal:
return JNIWeakGlobalRefType;
case kSirtOrInvalid:
// Is it in a stack IRT?
if (ts.Self()->StackReferencesContain(java_object)) {
return JNILocalRefType;
}
if (!ts.Vm()->work_around_app_jni_bugs) {
return JNIInvalidRefType;
}
// If we're handing out direct pointers, check whether it's a direct pointer
// to a local reference.
if (Decode<Object*>(ts, java_object) == reinterpret_cast<Object*>(java_object)) {
if (ts.Env()->locals.ContainsDirectPointer(reinterpret_cast<Object*>(java_object))) {
return JNILocalRefType;
}
}
return JNIInvalidRefType;
}
LOG(FATAL) << "IndirectRefKind[" << kind << "]";
return JNIInvalidRefType;
}
};
const JNINativeInterface gJniNativeInterface = {
NULL, // reserved0.
NULL, // reserved1.
NULL, // reserved2.
NULL, // 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,