Move arenas into runtime
Moved arena pool into the runtime.
Motivation:
Allow GC to use arena allocators, recycle arena pool for linear alloc.
Bug: 19264997
Change-Id: I8ddbb6d55ee923a980b28fb656c758c5d7697c2f
diff --git a/runtime/base/debug_stack.h b/runtime/base/debug_stack.h
new file mode 100644
index 0000000..03f4575
--- /dev/null
+++ b/runtime/base/debug_stack.h
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2014 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_BASE_DEBUG_STACK_H_
+#define ART_RUNTIME_BASE_DEBUG_STACK_H_
+
+#include "base/logging.h"
+#include "base/macros.h"
+#include "globals.h"
+
+namespace art {
+
+// Helper classes for reference counting to enforce construction/destruction order and
+// usage of the top element of a stack in debug mode with no overhead in release mode.
+
+// Reference counter. No references allowed in destructor or in explicitly called CheckNoRefs().
+template <bool kIsDebug>
+class DebugStackRefCounterImpl;
+// Reference. Allows an explicit check that it's the top reference.
+template <bool kIsDebug>
+class DebugStackReferenceImpl;
+// Indirect top reference. Checks that the reference is the top reference when used.
+template <bool kIsDebug>
+class DebugStackIndirectTopRefImpl;
+
+typedef DebugStackRefCounterImpl<kIsDebugBuild> DebugStackRefCounter;
+typedef DebugStackReferenceImpl<kIsDebugBuild> DebugStackReference;
+typedef DebugStackIndirectTopRefImpl<kIsDebugBuild> DebugStackIndirectTopRef;
+
+// Non-debug mode specializations. This should be optimized away.
+
+template <>
+class DebugStackRefCounterImpl<false> {
+ public:
+ size_t IncrementRefCount() { return 0u; }
+ void DecrementRefCount() { }
+ size_t GetRefCount() const { return 0u; }
+ void CheckNoRefs() const { }
+};
+
+template <>
+class DebugStackReferenceImpl<false> {
+ public:
+ explicit DebugStackReferenceImpl(DebugStackRefCounterImpl<false>* counter) { UNUSED(counter); }
+ DebugStackReferenceImpl(const DebugStackReferenceImpl& other) = default;
+ DebugStackReferenceImpl& operator=(const DebugStackReferenceImpl& other) = default;
+ void CheckTop() { }
+};
+
+template <>
+class DebugStackIndirectTopRefImpl<false> {
+ public:
+ explicit DebugStackIndirectTopRefImpl(DebugStackReferenceImpl<false>* ref) { UNUSED(ref); }
+ DebugStackIndirectTopRefImpl(const DebugStackIndirectTopRefImpl& other) = default;
+ DebugStackIndirectTopRefImpl& operator=(const DebugStackIndirectTopRefImpl& other) = default;
+ void CheckTop() { }
+};
+
+// Debug mode versions.
+
+template <bool kIsDebug>
+class DebugStackRefCounterImpl {
+ public:
+ DebugStackRefCounterImpl() : ref_count_(0u) { }
+ ~DebugStackRefCounterImpl() { CheckNoRefs(); }
+ size_t IncrementRefCount() { return ++ref_count_; }
+ void DecrementRefCount() { --ref_count_; }
+ size_t GetRefCount() const { return ref_count_; }
+ void CheckNoRefs() const { CHECK_EQ(ref_count_, 0u); }
+
+ private:
+ size_t ref_count_;
+};
+
+template <bool kIsDebug>
+class DebugStackReferenceImpl {
+ public:
+ explicit DebugStackReferenceImpl(DebugStackRefCounterImpl<kIsDebug>* counter)
+ : counter_(counter), ref_count_(counter->IncrementRefCount()) {
+ }
+ DebugStackReferenceImpl(const DebugStackReferenceImpl& other)
+ : counter_(other.counter_), ref_count_(counter_->IncrementRefCount()) {
+ }
+ DebugStackReferenceImpl& operator=(const DebugStackReferenceImpl& other) {
+ CHECK(counter_ == other.counter_);
+ return *this;
+ }
+ ~DebugStackReferenceImpl() { counter_->DecrementRefCount(); }
+ void CheckTop() { CHECK_EQ(counter_->GetRefCount(), ref_count_); }
+
+ private:
+ DebugStackRefCounterImpl<true>* counter_;
+ size_t ref_count_;
+};
+
+template <bool kIsDebug>
+class DebugStackIndirectTopRefImpl {
+ public:
+ explicit DebugStackIndirectTopRefImpl(DebugStackReferenceImpl<kIsDebug>* ref)
+ : ref_(ref) {
+ CheckTop();
+ }
+ DebugStackIndirectTopRefImpl(const DebugStackIndirectTopRefImpl& other)
+ : ref_(other.ref_) {
+ CheckTop();
+ }
+ DebugStackIndirectTopRefImpl& operator=(const DebugStackIndirectTopRefImpl& other) {
+ CHECK(ref_ == other.ref_);
+ CheckTop();
+ return *this;
+ }
+ ~DebugStackIndirectTopRefImpl() {
+ CheckTop();
+ }
+ void CheckTop() {
+ ref_->CheckTop();
+ }
+
+ private:
+ DebugStackReferenceImpl<kIsDebug>* ref_;
+};
+
+} // namespace art
+
+#endif // ART_RUNTIME_BASE_DEBUG_STACK_H_