| /* |
| * 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 "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; |
| } |
| |
| DCHECK((reinterpret_cast<uintptr_t>(obj) & 0xffff0000) != 0xebad0000); |
| |
| 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': |
| arg_array_[offset].SetZ(va_arg(ap, jint)); |
| break; |
| case 'B': |
| arg_array_[offset].SetB(va_arg(ap, jint)); |
| break; |
| case 'C': |
| arg_array_[offset].SetC(va_arg(ap, jint)); |
| break; |
| case 'S': |
| arg_array_[offset].SetS(va_arg(ap, jint)); |
| break; |
| case 'I': |
| arg_array_[offset].SetI(va_arg(ap, jint)); |
| break; |
| case 'F': |
| arg_array_[offset].SetF(va_arg(ap, jdouble)); |
| break; |
| case 'L': |
| arg_array_[offset].SetL(DecodeObj(env, va_arg(ap, jobject))); |
| break; |
| case 'D': |
| arg_array_[offset].SetD(va_arg(ap, jdouble)); |
| break; |
| case 'J': |
| arg_array_[offset].SetJ(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': |
| arg_array_[offset].SetZ(args[offset].z); |
| break; |
| case 'B': |
| arg_array_[offset].SetB(args[offset].b); |
| break; |
| case 'C': |
| arg_array_[offset].SetC(args[offset].c); |
| break; |
| case 'S': |
| arg_array_[offset].SetS(args[offset].s); |
| break; |
| case 'I': |
| arg_array_[offset].SetI(args[offset].i); |
| break; |
| case 'F': |
| arg_array_[offset].SetF(args[offset].f); |
| break; |
| case 'L': |
| arg_array_[offset].SetL(DecodeObj(env, args[offset].l)); |
| break; |
| case 'D': |
| arg_array_[offset].SetD(args[offset].d); |
| break; |
| case 'J': |
| arg_array_[offset].SetJ(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 void CheckMethodArguments(Method* m, JValue* args) { |
| MethodHelper mh(m); |
| ObjectArray<Class>* parameter_types = mh.GetParameterTypes(); |
| CHECK(parameter_types != NULL); |
| size_t error_count = 0; |
| for (int i = 0; i < parameter_types->GetLength(); ++i) { |
| Class* parameter_type = parameter_types->Get(i); |
| // TODO: check primitives are in range. |
| if (!parameter_type->IsPrimitive()) { |
| Object* argument = args[i].GetL(); |
| if (argument != NULL && !argument->InstanceOf(parameter_type)) { |
| LOG(ERROR) << "JNI ERROR (app bug): attempt to pass an instance of " |
| << PrettyTypeOf(argument) << " as argument " << (i + 1) << " to " << PrettyMethod(m); |
| ++error_count; |
| } |
| } |
| } |
| if (error_count > 0) { |
| // TODO: pass the JNI function name (such as "CallVoidMethodV") through so we can call JniAbort |
| // with an argument. |
| JniAbort(NULL); |
| } |
| } |
| |
| static JValue InvokeWithArgArray(JNIEnv* public_env, Object* receiver, Method* method, JValue* args) { |
| JNIEnvExt* env = reinterpret_cast<JNIEnvExt*>(public_env); |
| if (UNLIKELY(env->check_jni)) { |
| CheckMethodArguments(method, args); |
| } |
| JValue result; |
| 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, 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) { |
| Method* method = self->GetCurrentMethod(); |
| 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, 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 condition variable"), |
| 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, 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) { |
| It it = libraries_.find(path); |
| return (it == libraries_.end()) ? NULL : it->second; |
| } |
| |
| 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, 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, 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, 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.GetL()); |
| } |
| |
| 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.GetL()); |
| } |
| |
| 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.GetL()); |
| } |
| |
| 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.GetZ(); |
| } |
| |
| static jboolean CallBooleanMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).GetZ(); |
| } |
| |
| static jboolean CallBooleanMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).GetZ(); |
| } |
| |
| 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.GetB(); |
| } |
| |
| static jbyte CallByteMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).GetB(); |
| } |
| |
| static jbyte CallByteMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).GetB(); |
| } |
| |
| 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.GetC(); |
| } |
| |
| static jchar CallCharMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).GetC(); |
| } |
| |
| static jchar CallCharMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).GetC(); |
| } |
| |
| 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.GetD(); |
| } |
| |
| static jdouble CallDoubleMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).GetD(); |
| } |
| |
| static jdouble CallDoubleMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).GetD(); |
| } |
| |
| 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.GetF(); |
| } |
| |
| static jfloat CallFloatMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).GetF(); |
| } |
| |
| static jfloat CallFloatMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).GetF(); |
| } |
| |
| 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.GetI(); |
| } |
| |
| static jint CallIntMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).GetI(); |
| } |
| |
| static jint CallIntMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).GetI(); |
| } |
| |
| 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.GetJ(); |
| } |
| |
| static jlong CallLongMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).GetJ(); |
| } |
| |
| static jlong CallLongMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).GetJ(); |
| } |
| |
| 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.GetS(); |
| } |
| |
| static jshort CallShortMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(env, obj, mid, args).GetS(); |
| } |
| |
| static jshort CallShortMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeVirtualOrInterfaceWithJValues(env, obj, mid, args).GetS(); |
| } |
| |
| 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.GetL()); |
| 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.GetL()); |
| } |
| |
| 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.GetL()); |
| } |
| |
| 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.GetZ(); |
| } |
| |
| static jboolean CallNonvirtualBooleanMethodV(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, obj, mid, args).GetZ(); |
| } |
| |
| static jboolean CallNonvirtualBooleanMethodA(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, obj, mid, args).GetZ(); |
| } |
| |
| 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.GetB(); |
| } |
| |
| static jbyte CallNonvirtualByteMethodV(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, obj, mid, args).GetB(); |
| } |
| |
| static jbyte CallNonvirtualByteMethodA(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, obj, mid, args).GetB(); |
| } |
| |
| 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.GetC(); |
| } |
| |
| static jchar CallNonvirtualCharMethodV(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, obj, mid, args).GetC(); |
| } |
| |
| static jchar CallNonvirtualCharMethodA(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, obj, mid, args).GetC(); |
| } |
| |
| 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.GetS(); |
| } |
| |
| static jshort CallNonvirtualShortMethodV(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, obj, mid, args).GetS(); |
| } |
| |
| static jshort CallNonvirtualShortMethodA(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, obj, mid, args).GetS(); |
| } |
| |
| 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.GetI(); |
| } |
| |
| static jint CallNonvirtualIntMethodV(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, obj, mid, args).GetI(); |
| } |
| |
| static jint CallNonvirtualIntMethodA(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, obj, mid, args).GetI(); |
| } |
| |
| 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.GetJ(); |
| } |
| |
| static jlong CallNonvirtualLongMethodV(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, obj, mid, args).GetJ(); |
| } |
| |
| static jlong CallNonvirtualLongMethodA(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, obj, mid, args).GetJ(); |
| } |
| |
| 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.GetF(); |
| } |
| |
| static jfloat CallNonvirtualFloatMethodV(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, obj, mid, args).GetF(); |
| } |
| |
| static jfloat CallNonvirtualFloatMethodA(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, obj, mid, args).GetF(); |
| } |
| |
| 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.GetD(); |
| } |
| |
| static jdouble CallNonvirtualDoubleMethodV(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, obj, mid, args).GetD(); |
| } |
| |
| static jdouble CallNonvirtualDoubleMethodA(JNIEnv* env, |
| jobject obj, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, obj, mid, args).GetD(); |
| } |
| |
| 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.GetL()); |
| 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.GetL()); |
| } |
| |
| 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.GetL()); |
| } |
| |
| 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.GetZ(); |
| } |
| |
| static jboolean CallStaticBooleanMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, NULL, mid, args).GetZ(); |
| } |
| |
| static jboolean CallStaticBooleanMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, NULL, mid, args).GetZ(); |
| } |
| |
| 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.GetB(); |
| } |
| |
| static jbyte CallStaticByteMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, NULL, mid, args).GetB(); |
| } |
| |
| static jbyte CallStaticByteMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, NULL, mid, args).GetB(); |
| } |
| |
| 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.GetC(); |
| } |
| |
| static jchar CallStaticCharMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, NULL, mid, args).GetC(); |
| } |
| |
| static jchar CallStaticCharMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, NULL, mid, args).GetC(); |
| } |
| |
| 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.GetS(); |
| } |
| |
| static jshort CallStaticShortMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, NULL, mid, args).GetS(); |
| } |
| |
| static jshort CallStaticShortMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, NULL, mid, args).GetS(); |
| } |
| |
| 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.GetI(); |
| } |
| |
| static jint CallStaticIntMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, NULL, mid, args).GetI(); |
| } |
| |
| static jint CallStaticIntMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, NULL, mid, args).GetI(); |
| } |
| |
| 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.GetJ(); |
| } |
| |
| static jlong CallStaticLongMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, NULL, mid, args).GetJ(); |
| } |
| |
| static jlong CallStaticLongMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, NULL, mid, args).GetJ(); |
| } |
| |
| 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.GetF(); |
| } |
| |
| static jfloat CallStaticFloatMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, NULL, mid, args).GetF(); |
| } |
| |
| static jfloat CallStaticFloatMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, NULL, mid, args).GetF(); |
| } |
| |
| 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.GetD(); |
| } |
| |
| static jdouble CallStaticDoubleMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithVarArgs(env, NULL, mid, args).GetD(); |
| } |
| |
| static jdouble CallStaticDoubleMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| ScopedJniThreadState ts(env); |
| return InvokeWithJValues(env, NULL, mid, args).GetD(); |
| } |
| |
| 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, |
| 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, |
| }; |
| |
| JNIEnvExt::JNIEnvExt(Thread* self, JavaVMExt* vm) |
| : self(self), |
| vm(vm), |
| local_ref_cookie(IRT_FIRST_SEGMENT), |
| locals(kLocalsInitial, kLocalsMax, kLocal), |
| check_jni(false), |
| critical(false), |
| monitors("monitors", kMonitorsInitial, kMonitorsMax) { |
| functions = unchecked_functions = &gJniNativeInterface; |
| if (vm->check_jni) { |
| SetCheckJniEnabled(true); |
| } |
| // The JniEnv local reference values must be at a consistent offset or else cross-compilation |
| // errors will ensue. |
| CHECK_EQ(JNIEnvExt::LocalRefCookieOffset().Int32Value(), 12); |
| CHECK_EQ(JNIEnvExt::SegmentStateOffset().Int32Value(), 16); |
| } |
| |
| JNIEnvExt::~JNIEnvExt() { |
| } |
| |
| void JNIEnvExt::SetCheckJniEnabled(bool enabled) { |
| check_jni = enabled; |
| functions = enabled ? GetCheckJniNativeInterface() : &gJniNativeInterface; |
| } |
| |
| void JNIEnvExt::DumpReferenceTables() { |
| locals.Dump(); |
| monitors.Dump(); |
| } |
| |
| void JNIEnvExt::PushFrame(int /*capacity*/) { |
| // TODO: take 'capacity' into account. |
| stacked_local_ref_cookies.push_back(local_ref_cookie); |
| local_ref_cookie = locals.GetSegmentState(); |
| } |
| |
| void JNIEnvExt::PopFrame() { |
| locals.SetSegmentState(local_ref_cookie); |
| local_ref_cookie = stacked_local_ref_cookies.back(); |
| stacked_local_ref_cookies.pop_back(); |
| } |
| |
| // JNI Invocation interface. |
| |
| extern "C" jint JNI_CreateJavaVM(JavaVM** p_vm, void** p_env, void* vm_args) { |
| const JavaVMInitArgs* args = static_cast<JavaVMInitArgs*>(vm_args); |
| if (args->version < JNI_VERSION_1_2) { |
| return JNI_EVERSION; |
| } |
| Runtime::Options options; |
| for (int i = 0; i < args->nOptions; ++i) { |
| JavaVMOption* option = &args->options[i]; |
| options.push_back(std::make_pair(std::string(option->optionString), option->extraInfo)); |
| } |
| bool ignore_unrecognized = args->ignoreUnrecognized; |
| Runtime* runtime = Runtime::Create(options, ignore_unrecognized); |
| if (runtime == NULL) { |
| return JNI_ERR; |
| } |
| runtime->Start(); |
| *p_env = Thread::Current()->GetJniEnv(); |
| *p_vm = runtime->GetJavaVM(); |
| return JNI_OK; |
| } |
| |
| extern "C" jint JNI_GetCreatedJavaVMs(JavaVM** vms, jsize, jsize* vm_count) { |
| Runtime* runtime = Runtime::Current(); |
| if (runtime == NULL) { |
| *vm_count = 0; |
| } else { |
| *vm_count = 1; |
| vms[0] = runtime->GetJavaVM(); |
| } |
| return JNI_OK; |
| } |
| |
| // Historically unsupported. |
| extern "C" jint JNI_GetDefaultJavaVMInitArgs(void* /*vm_args*/) { |
| return JNI_ERR; |
| } |
| |
| class JII { |
| public: |
| static jint DestroyJavaVM(JavaVM* vm) { |
| if (vm == NULL) { |
| return JNI_ERR; |
| } |
| JavaVMExt* raw_vm = reinterpret_cast<JavaVMExt*>(vm); |
| delete raw_vm->runtime; |
| return JNI_OK; |
| } |
| |
| static jint AttachCurrentThread(JavaVM* vm, JNIEnv** p_env, void* thr_args) { |
| return JII_AttachCurrentThread(vm, p_env, thr_args, false); |
| } |
| |
| static jint AttachCurrentThreadAsDaemon(JavaVM* vm, JNIEnv** p_env, void* thr_args) { |
| return JII_AttachCurrentThread(vm, p_env, thr_args, true); |
| } |
| |
| static jint DetachCurrentThread(JavaVM* vm) { |
| if (vm == NULL) { |
| return JNI_ERR; |
| } |
| JavaVMExt* raw_vm = reinterpret_cast<JavaVMExt*>(vm); |
| Runtime* runtime = raw_vm->runtime; |
| runtime->DetachCurrentThread(); |
| return JNI_OK; |
| } |
| |
| static jint GetEnv(JavaVM* vm, void** env, jint version) { |
| if (version < JNI_VERSION_1_1 || version > JNI_VERSION_1_6) { |
| return JNI_EVERSION; |
| } |
| if (vm == NULL || env == NULL) { |
| return JNI_ERR; |
| } |
| Thread* thread = Thread::Current(); |
| if (thread == NULL) { |
| *env = NULL; |
| return JNI_EDETACHED; |
| } |
| *env = thread->GetJniEnv(); |
| return JNI_OK; |
| } |
| }; |
| |
| const JNIInvokeInterface gJniInvokeInterface = { |
| NULL, // reserved0 |
| NULL, // reserved1 |
| NULL, // reserved2 |
| JII::DestroyJavaVM, |
| JII::AttachCurrentThread, |
| JII::DetachCurrentThread, |
| JII::GetEnv, |
| JII::AttachCurrentThreadAsDaemon |
| }; |
| |
| JavaVMExt::JavaVMExt(Runtime* runtime, Runtime::ParsedOptions* options) |
| : runtime(runtime), |
| check_jni_abort_hook(NULL), |
| check_jni_abort_hook_data(NULL), |
| check_jni(false), |
| force_copy(false), // TODO: add a way to enable this |
| trace(options->jni_trace_), |
| work_around_app_jni_bugs(false), |
| pins_lock("JNI pin table lock"), |
| pin_table("pin table", kPinTableInitial, kPinTableMax), |
| globals_lock("JNI global reference table lock"), |
| globals(gGlobalsInitial, gGlobalsMax, kGlobal), |
| weak_globals_lock("JNI weak global reference table lock"), |
| weak_globals(kWeakGlobalsInitial, kWeakGlobalsMax, kWeakGlobal), |
| libraries_lock("JNI shared libraries map lock"), |
| libraries(new Libraries) { |
| functions = unchecked_functions = &gJniInvokeInterface; |
| if (options->check_jni_) { |
| SetCheckJniEnabled(true); |
| } |
| } |
| |
| JavaVMExt::~JavaVMExt() { |
| delete libraries; |
| } |
| |
| void JavaVMExt::SetCheckJniEnabled(bool enabled) { |
| check_jni = enabled; |
| functions = enabled ? GetCheckJniInvokeInterface() : &gJniInvokeInterface; |
| } |
| |
| void JavaVMExt::DumpReferenceTables() { |
| { |
| MutexLock mu(globals_lock); |
| globals.Dump(); |
| } |
| { |
| MutexLock mu(weak_globals_lock); |
| weak_globals.Dump(); |
| } |
| { |
| MutexLock mu(pins_lock); |
| pin_table.Dump(); |
| } |
| } |
| |
| bool JavaVMExt::LoadNativeLibrary(const std::string& path, ClassLoader* class_loader, std::string& detail) { |
| detail.clear(); |
| |
| // See if we've already loaded this library. If we have, and the class loader |
| // matches, return successfully without doing anything. |
| // TODO: for better results we should canonicalize the pathname (or even compare |
| // inodes). This implementation is fine if everybody is using System.loadLibrary. |
| SharedLibrary* library; |
| { |
| // TODO: move the locking (and more of this logic) into Libraries. |
| MutexLock mu(libraries_lock); |
| library = libraries->Get(path); |
| } |
| if (library != NULL) { |
| if (library->GetClassLoader() != class_loader) { |
| // The library will be associated with class_loader. The JNI |
| // spec says we can't load the same library into more than one |
| // class loader. |
| StringAppendF(&detail, "Shared library \"%s\" already opened by " |
| "ClassLoader %p; can't open in ClassLoader %p", |
| path.c_str(), library->GetClassLoader(), class_loader); |
| LOG(WARNING) << detail; |
| return false; |
| } |
| VLOG(jni) << "[Shared library \"" << path << "\" already loaded in " |
| << "ClassLoader " << class_loader << "]"; |
| if (!library->CheckOnLoadResult()) { |
| StringAppendF(&detail, "JNI_OnLoad failed on a previous attempt " |
| "to load \"%s\"", path.c_str()); |
| return false; |
| } |
| return true; |
| } |
| |
| // Open the shared library. Because we're using a full path, the system |
| // doesn't have to search through LD_LIBRARY_PATH. (It may do so to |
| // resolve this library's dependencies though.) |
| |
| // Failures here are expected when java.library.path has several entries |
| // and we have to hunt for the lib. |
| |
| // The current version of the dynamic linker prints detailed information |
| // about dlopen() failures. Some things to check if the message is |
| // cryptic: |
| // - make sure the library exists on the device |
| // - verify that the right path is being opened (the debug log message |
| // above can help with that) |
| // - check to see if the library is valid (e.g. not zero bytes long) |
| // - check config/prelink-linux-arm.map to ensure that the library |
| // is listed and is not being overrun by the previous entry (if |
| // loading suddenly stops working on a prelinked library, this is |
| // a good one to check) |
| // - write a trivial app that calls sleep() then dlopen(), attach |
| // to it with "strace -p <pid>" while it sleeps, and watch for |
| // attempts to open nonexistent dependent shared libs |
| |
| // TODO: automate some of these checks! |
| |
| // This can execute slowly for a large library on a busy system, so we |
| // want to switch from kRunnable to kVmWait while it executes. This allows |
| // the GC to ignore us. |
| Thread* self = Thread::Current(); |
| void* handle = NULL; |
| { |
| ScopedThreadStateChange tsc(self, kVmWait); |
| handle = dlopen(path.empty() ? NULL : path.c_str(), RTLD_LAZY); |
| } |
| |
| VLOG(jni) << "[Call to dlopen(\"" << path << "\") returned " << handle << "]"; |
| |
| if (handle == NULL) { |
| detail = dlerror(); |
| return false; |
| } |
| |
| // Create a new entry. |
| { |
| // TODO: move the locking (and more of this logic) into Libraries. |
| MutexLock mu(libraries_lock); |
| library = libraries->Get(path); |
| if (library != NULL) { |
| LOG(INFO) << "WOW: we lost a race to add shared library: " |
| << "\"" << path << "\" ClassLoader=" << class_loader; |
| return library->CheckOnLoadResult(); |
| } |
| library = new SharedLibrary(path, handle, class_loader); |
| libraries->Put(path, library); |
| } |
| |
| VLOG(jni) << "[Added shared library \"" << path << "\" for ClassLoader " << class_loader << "]"; |
| |
| bool result = true; |
| void* sym = dlsym(handle, "JNI_OnLoad"); |
| if (sym == NULL) { |
| VLOG(jni) << "[No JNI_OnLoad found in \"" << path << "\"]"; |
| } else { |
| // Call JNI_OnLoad. We have to override the current class |
| // loader, which will always be "null" since the stuff at the |
| // top of the stack is around Runtime.loadLibrary(). (See |
| // the comments in the JNI FindClass function.) |
| typedef int (*JNI_OnLoadFn)(JavaVM*, void*); |
| JNI_OnLoadFn jni_on_load = reinterpret_cast<JNI_OnLoadFn>(sym); |
| const ClassLoader* old_class_loader = self->GetClassLoaderOverride(); |
| self->SetClassLoaderOverride(class_loader); |
| |
| int version = 0; |
| { |
| ScopedThreadStateChange tsc(self, kNative); |
| VLOG(jni) << "[Calling JNI_OnLoad in \"" << path << "\"]"; |
| version = (*jni_on_load)(this, NULL); |
| } |
| |
| self->SetClassLoaderOverride(old_class_loader); |
| |
| if (version != JNI_VERSION_1_2 && |
| version != JNI_VERSION_1_4 && |
| version != JNI_VERSION_1_6) { |
| LOG(WARNING) << "JNI_OnLoad in \"" << path << "\" returned " |
| << "bad version: " << version; |
| // It's unwise to call dlclose() here, but we can mark it |
| // as bad and ensure that future load attempts will fail. |
| // We don't know how far JNI_OnLoad got, so there could |
| // be some partially-initialized stuff accessible through |
| // newly-registered native method calls. We could try to |
| // unregister them, but that doesn't seem worthwhile. |
| result = false; |
| } else { |
| VLOG(jni) << "[Returned " << (result ? "successfully" : "failure") |
| << " from JNI_OnLoad in \"" << path << "\"]"; |
| } |
| } |
| |
| library->SetResult(result); |
| return result; |
| } |
| |
| void* JavaVMExt::FindCodeForNativeMethod(Method* m) { |
| CHECK(m->IsNative()); |
| |
| Class* c = m->GetDeclaringClass(); |
| |
| // If this is a static method, it could be called before the class |
| // has been initialized. |
| if (m->IsStatic()) { |
| if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(c, true, true)) { |
| return NULL; |
| } |
| } else { |
| CHECK(c->GetStatus() >= Class::kStatusInitializing) << c->GetStatus() << " " << PrettyMethod(m); |
| } |
| |
| std::string detail; |
| void* native_method; |
| { |
| MutexLock mu(libraries_lock); |
| native_method = libraries->FindNativeMethod(m, detail); |
| } |
| // throwing can cause libraries_lock to be reacquired |
| if (native_method == NULL) { |
| Thread::Current()->ThrowNewException("Ljava/lang/UnsatisfiedLinkError;", detail.c_str()); |
| } |
| return native_method; |
| } |
| |
| void JavaVMExt::VisitRoots(Heap::RootVisitor* visitor, void* arg) { |
| { |
| MutexLock mu(globals_lock); |
| globals.VisitRoots(visitor, arg); |
| } |
| { |
| MutexLock mu(pins_lock); |
| pin_table.VisitRoots(visitor, arg); |
| } |
| // The weak_globals table is visited by the GC itself (because it mutates the table). |
| } |
| |
| jclass CacheClass(JNIEnv* env, const char* jni_class_name) { |
| ScopedLocalRef<jclass> c(env, env->FindClass(jni_class_name)); |
| if (c.get() == NULL) { |
| return NULL; |
| } |
| return reinterpret_cast<jclass>(env->NewGlobalRef(c.get())); |
| } |
| |
| } // 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(FATAL) << "jobjectRefType[" << static_cast<int>(rhs) << "]"; |
| return os; |
| } |
| } |