upload android base code part3

2018-08-08 16:48:17 +08:00 · 2018-08-08 16:48:17 +08:00 · b9e30e05b1
commit b9e30e05b1
parent 71b83c22f1
15122 changed files with 2089659 additions and 0 deletions
--- a/android/art/runtime/method_handles-inl.h
+++ b/android/art/runtime/method_handles-inl.h
@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#ifndef ART_RUNTIME_METHOD_HANDLES_INL_H_
+#define ART_RUNTIME_METHOD_HANDLES_INL_H_
+
+#include "method_handles.h"
+
+#include "common_throws.h"
+#include "dex_instruction.h"
+#include "interpreter/interpreter_common.h"
+#include "jvalue.h"
+#include "mirror/class.h"
+#include "mirror/method_type.h"
+#include "mirror/object.h"
+#include "reflection.h"
+#include "stack.h"
+
+namespace art {
+
+inline bool ConvertArgumentValue(Handle<mirror::MethodType> callsite_type,
+                                 Handle<mirror::MethodType> callee_type,
+                                 int index,
+                                 JValue* value) REQUIRES_SHARED(Locks::mutator_lock_) {
+  ObjPtr<mirror::Class> from_class(callsite_type->GetPTypes()->GetWithoutChecks(index));
+  ObjPtr<mirror::Class> to_class(callee_type->GetPTypes()->GetWithoutChecks(index));
+  if (from_class == to_class) {
+    return true;
+  }
+
+  // |value| may contain a bare heap pointer which is generally
+  // |unsafe. ConvertJValueCommon() saves |value|, |from_class|, and
+  // |to_class| to Handles where necessary to avoid issues if the heap
+  // changes.
+  if (ConvertJValueCommon(callsite_type, callee_type, from_class, to_class, value)) {
+    DCHECK(!Thread::Current()->IsExceptionPending());
+    return true;
+  } else {
+    DCHECK(Thread::Current()->IsExceptionPending());
+    value->SetJ(0);
+    return false;
+  }
+}
+
+inline bool ConvertReturnValue(Handle<mirror::MethodType> callsite_type,
+                               Handle<mirror::MethodType> callee_type,
+                               JValue* value)  REQUIRES_SHARED(Locks::mutator_lock_) {
+  ObjPtr<mirror::Class> from_class(callee_type->GetRType());
+  ObjPtr<mirror::Class> to_class(callsite_type->GetRType());
+  if (to_class->GetPrimitiveType() == Primitive::kPrimVoid || from_class == to_class) {
+    return true;
+  }
+
+  // |value| may contain a bare heap pointer which is generally
+  // unsafe. ConvertJValueCommon() saves |value|, |from_class|, and
+  // |to_class| to Handles where necessary to avoid issues if the heap
+  // changes.
+  if (ConvertJValueCommon(callsite_type, callee_type, from_class, to_class, value)) {
+    DCHECK(!Thread::Current()->IsExceptionPending());
+    return true;
+  } else {
+    DCHECK(Thread::Current()->IsExceptionPending());
+    value->SetJ(0);
+    return false;
+  }
+}
+
+template <typename G, typename S>
+bool PerformConversions(Thread* self,
+                        Handle<mirror::MethodType> callsite_type,
+                        Handle<mirror::MethodType> callee_type,
+                        G* getter,
+                        S* setter,
+                        int32_t num_conversions) REQUIRES_SHARED(Locks::mutator_lock_) {
+  StackHandleScope<2> hs(self);
+  Handle<mirror::ObjectArray<mirror::Class>> from_types(hs.NewHandle(callsite_type->GetPTypes()));
+  Handle<mirror::ObjectArray<mirror::Class>> to_types(hs.NewHandle(callee_type->GetPTypes()));
+
+  for (int32_t i = 0; i < num_conversions; ++i) {
+    ObjPtr<mirror::Class> from(from_types->GetWithoutChecks(i));
+    ObjPtr<mirror::Class> to(to_types->GetWithoutChecks(i));
+    const Primitive::Type from_type = from_types->GetWithoutChecks(i)->GetPrimitiveType();
+    const Primitive::Type to_type = to_types->GetWithoutChecks(i)->GetPrimitiveType();
+    if (from == to) {
+      // Easy case - the types are identical. Nothing left to do except to pass
+      // the arguments along verbatim.
+      if (Primitive::Is64BitType(from_type)) {
+        setter->SetLong(getter->GetLong());
+      } else if (from_type == Primitive::kPrimNot) {
+        setter->SetReference(getter->GetReference());
+      } else {
+        setter->Set(getter->Get());
+      }
+    } else {
+      JValue value;
+
+      if (Primitive::Is64BitType(from_type)) {
+        value.SetJ(getter->GetLong());
+      } else if (from_type == Primitive::kPrimNot) {
+        value.SetL(getter->GetReference());
+      } else {
+        value.SetI(getter->Get());
+      }
+
+      // Caveat emptor - ObjPtr's not guaranteed valid after this call.
+      if (!ConvertArgumentValue(callsite_type, callee_type, i, &value)) {
+        DCHECK(self->IsExceptionPending());
+        return false;
+      }
+
+      if (Primitive::Is64BitType(to_type)) {
+        setter->SetLong(value.GetJ());
+      } else if (to_type == Primitive::kPrimNot) {
+        setter->SetReference(value.GetL());
+      } else {
+        setter->Set(value.GetI());
+      }
+    }
+  }
+
+  return true;
+}
+
+}  // namespace art
+
+#endif  // ART_RUNTIME_METHOD_HANDLES_INL_H_