| /* |
| * Copyright (C) 2012 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 <android-base/logging.h> |
| |
| #include "art_method-inl.h" |
| #include "entrypoints/entrypoint_utils.h" |
| #include "jni/java_vm_ext.h" |
| #include "mirror/object-inl.h" |
| #include "scoped_thread_state_change-inl.h" |
| #include "thread.h" |
| |
| namespace art { |
| |
| // Used by the JNI dlsym stub to find the native method to invoke if none is registered. |
| extern "C" const void* artFindNativeMethodRunnable(Thread* self) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| Locks::mutator_lock_->AssertSharedHeld(self); // We come here as Runnable. |
| ArtMethod* method = self->GetCurrentMethod(nullptr); |
| DCHECK(method != nullptr); |
| |
| // Lookup symbol address for method, on failure we'll return null with an exception set, |
| // otherwise we return the address of the method we found. |
| JavaVMExt* vm = down_cast<JNIEnvExt*>(self->GetJniEnv())->GetVm(); |
| void* native_code = vm->FindCodeForNativeMethod(method); |
| if (native_code == nullptr) { |
| self->AssertPendingException(); |
| return nullptr; |
| } |
| // Register so that future calls don't come here |
| return method->RegisterNative(native_code); |
| } |
| |
| // Used by the JNI dlsym stub to find the native method to invoke if none is registered. |
| extern "C" const void* artFindNativeMethod(Thread* self) { |
| DCHECK_EQ(self, Thread::Current()); |
| Locks::mutator_lock_->AssertNotHeld(self); // We come here as Native. |
| ScopedObjectAccess soa(self); |
| return artFindNativeMethodRunnable(self); |
| } |
| |
| } // namespace art |