72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
//===--- unittest/Support/RecyclerTest.cpp --------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Recycler.h"
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#include "llvm/Support/AllocatorBase.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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struct Object1 {
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char Data[1];
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};
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struct Object8 {
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char Data[8];
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};
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class DecoratedMallocAllocator : public MallocAllocator {
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public:
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int DeallocCount = 0;
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void Deallocate(const void *Ptr, size_t Size, size_t Alignment) {
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DeallocCount++;
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MallocAllocator::Deallocate(Ptr, Size, Alignment);
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}
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template <typename T> void Deallocate(T *Ptr) {
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DeallocCount++;
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MallocAllocator::Deallocate(Ptr);
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}
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};
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TEST(RecyclerTest, RecycleAllocation) {
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DecoratedMallocAllocator Allocator;
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// Recycler needs size to be atleast 8 bytes.
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Recycler<Object1, 8, 8> R;
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Object1 *A1 = R.Allocate(Allocator);
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Object1 *A2 = R.Allocate(Allocator);
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R.Deallocate(Allocator, A2);
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Object1 *A3 = R.Allocate(Allocator);
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EXPECT_EQ(A2, A3); // reuse the deallocated object.
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R.Deallocate(Allocator, A1);
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R.Deallocate(Allocator, A3);
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R.clear(Allocator); // Should deallocate A1 and A3.
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EXPECT_EQ(Allocator.DeallocCount, 2);
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}
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TEST(RecyclerTest, MoveConstructor) {
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DecoratedMallocAllocator Allocator;
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Recycler<Object8> R;
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Object8 *A1 = R.Allocate(Allocator);
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Object8 *A2 = R.Allocate(Allocator);
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R.Deallocate(Allocator, A1);
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R.Deallocate(Allocator, A2);
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Recycler<Object8> R2(std::move(R));
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Object8 *A3 = R2.Allocate(Allocator);
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R2.Deallocate(Allocator, A3);
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R.clear(Allocator); // Should not deallocate anything as it was moved from.
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EXPECT_EQ(Allocator.DeallocCount, 0);
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R2.clear(Allocator);
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EXPECT_EQ(Allocator.DeallocCount, 2);
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}
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} // end anonymous namespace
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