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Diffstat (limited to 'compiler/utils/debug_stack.h')
-rw-r--r-- | compiler/utils/debug_stack.h | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/compiler/utils/debug_stack.h b/compiler/utils/debug_stack.h deleted file mode 100644 index 1bb0624187..0000000000 --- a/compiler/utils/debug_stack.h +++ /dev/null @@ -1,138 +0,0 @@ -/* - * 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_COMPILER_UTILS_DEBUG_STACK_H_ -#define ART_COMPILER_UTILS_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_COMPILER_UTILS_DEBUG_STACK_H_ |