Implement can_generate_native_method_bind capability
This capability lets one observe and even replace the implementations
of native methods when they are bound.
Test: ./test.py --host -j40
Bug: 37432636
Change-Id: I2432a8e4da1a677e8011ce495296f4ab9f42eb3e
diff --git a/runtime/openjdkjvmti/ti_method.cc b/runtime/openjdkjvmti/ti_method.cc
index 01bf21d..2adabba 100644
--- a/runtime/openjdkjvmti/ti_method.cc
+++ b/runtime/openjdkjvmti/ti_method.cc
@@ -35,14 +35,59 @@
#include "art_method-inl.h"
#include "base/enums.h"
#include "dex_file_annotations.h"
+#include "events-inl.h"
#include "jni_internal.h"
#include "mirror/object_array-inl.h"
#include "modifiers.h"
+#include "runtime_callbacks.h"
#include "scoped_thread_state_change-inl.h"
+#include "ScopedLocalRef.h"
#include "thread-inl.h"
+#include "thread_list.h"
namespace openjdkjvmti {
+struct TiMethodCallback : public art::MethodCallback {
+ void RegisterNativeMethod(art::ArtMethod* method,
+ const void* cur_method,
+ /*out*/void** new_method)
+ OVERRIDE REQUIRES_SHARED(art::Locks::mutator_lock_) {
+ if (event_handler->IsEventEnabledAnywhere(ArtJvmtiEvent::kNativeMethodBind)) {
+ art::Thread* thread = art::Thread::Current();
+ ScopedLocalRef<jthread> thread_jni(
+ thread->GetJniEnv(), thread->GetJniEnv()->AddLocalReference<jthread>(thread->GetPeer()));
+ art::ScopedThreadSuspension sts(thread, art::ThreadState::kNative);
+ event_handler->DispatchEvent<ArtJvmtiEvent::kNativeMethodBind>(
+ thread,
+ static_cast<JNIEnv*>(thread->GetJniEnv()),
+ thread_jni.get(),
+ art::jni::EncodeArtMethod(method),
+ const_cast<void*>(cur_method),
+ new_method);
+ }
+ }
+
+ EventHandler* event_handler = nullptr;
+};
+
+TiMethodCallback gMethodCallback;
+
+void MethodUtil::Register(EventHandler* handler) {
+ gMethodCallback.event_handler = handler;
+ art::ScopedThreadStateChange stsc(art::Thread::Current(),
+ art::ThreadState::kWaitingForDebuggerToAttach);
+ art::ScopedSuspendAll ssa("Add method callback");
+ art::Runtime::Current()->GetRuntimeCallbacks()->AddMethodCallback(&gMethodCallback);
+}
+
+void MethodUtil::Unregister() {
+ art::ScopedThreadStateChange stsc(art::Thread::Current(),
+ art::ThreadState::kWaitingForDebuggerToAttach);
+ art::ScopedSuspendAll ssa("Remove method callback");
+ art::Runtime* runtime = art::Runtime::Current();
+ runtime->GetRuntimeCallbacks()->RemoveMethodCallback(&gMethodCallback);
+}
+
jvmtiError MethodUtil::GetArgumentsSize(jvmtiEnv* env ATTRIBUTE_UNUSED,
jmethodID method,
jint* size_ptr) {