109 lines
2.7 KiB
C++
109 lines
2.7 KiB
C++
|
//===--- unittest/Support/ArrayRecyclerTest.cpp ---------------------------===//
|
||
|
//
|
||
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||
|
// See https://llvm.org/LICENSE.txt for license information.
|
||
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||
|
//
|
||
|
//===----------------------------------------------------------------------===//
|
||
|
|
||
|
#include "llvm/Support/ArrayRecycler.h"
|
||
|
#include "llvm/Support/Allocator.h"
|
||
|
#include "gtest/gtest.h"
|
||
|
#include <cstdlib>
|
||
|
|
||
|
using namespace llvm;
|
||
|
|
||
|
namespace {
|
||
|
|
||
|
struct Object {
|
||
|
int Num;
|
||
|
Object *Other;
|
||
|
};
|
||
|
typedef ArrayRecycler<Object> ARO;
|
||
|
|
||
|
TEST(ArrayRecyclerTest, Capacity) {
|
||
|
// Capacity size should never be 0.
|
||
|
ARO::Capacity Cap = ARO::Capacity::get(0);
|
||
|
EXPECT_LT(0u, Cap.getSize());
|
||
|
|
||
|
size_t PrevSize = Cap.getSize();
|
||
|
for (unsigned N = 1; N != 100; ++N) {
|
||
|
Cap = ARO::Capacity::get(N);
|
||
|
EXPECT_LE(N, Cap.getSize());
|
||
|
if (PrevSize >= N)
|
||
|
EXPECT_EQ(PrevSize, Cap.getSize());
|
||
|
else
|
||
|
EXPECT_LT(PrevSize, Cap.getSize());
|
||
|
PrevSize = Cap.getSize();
|
||
|
}
|
||
|
|
||
|
// Check that the buckets are monotonically increasing.
|
||
|
Cap = ARO::Capacity::get(0);
|
||
|
PrevSize = Cap.getSize();
|
||
|
for (unsigned N = 0; N != 20; ++N) {
|
||
|
Cap = Cap.getNext();
|
||
|
EXPECT_LT(PrevSize, Cap.getSize());
|
||
|
PrevSize = Cap.getSize();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
TEST(ArrayRecyclerTest, Basics) {
|
||
|
BumpPtrAllocator Allocator;
|
||
|
ArrayRecycler<Object> DUT;
|
||
|
|
||
|
ARO::Capacity Cap = ARO::Capacity::get(8);
|
||
|
Object *A1 = DUT.allocate(Cap, Allocator);
|
||
|
A1[0].Num = 21;
|
||
|
A1[7].Num = 17;
|
||
|
|
||
|
Object *A2 = DUT.allocate(Cap, Allocator);
|
||
|
A2[0].Num = 121;
|
||
|
A2[7].Num = 117;
|
||
|
|
||
|
Object *A3 = DUT.allocate(Cap, Allocator);
|
||
|
A3[0].Num = 221;
|
||
|
A3[7].Num = 217;
|
||
|
|
||
|
EXPECT_EQ(21, A1[0].Num);
|
||
|
EXPECT_EQ(17, A1[7].Num);
|
||
|
EXPECT_EQ(121, A2[0].Num);
|
||
|
EXPECT_EQ(117, A2[7].Num);
|
||
|
EXPECT_EQ(221, A3[0].Num);
|
||
|
EXPECT_EQ(217, A3[7].Num);
|
||
|
|
||
|
DUT.deallocate(Cap, A2);
|
||
|
|
||
|
// Check that deallocation didn't clobber anything.
|
||
|
EXPECT_EQ(21, A1[0].Num);
|
||
|
EXPECT_EQ(17, A1[7].Num);
|
||
|
EXPECT_EQ(221, A3[0].Num);
|
||
|
EXPECT_EQ(217, A3[7].Num);
|
||
|
|
||
|
// Verify recycling.
|
||
|
Object *A2x = DUT.allocate(Cap, Allocator);
|
||
|
EXPECT_EQ(A2, A2x);
|
||
|
|
||
|
DUT.deallocate(Cap, A2x);
|
||
|
DUT.deallocate(Cap, A1);
|
||
|
DUT.deallocate(Cap, A3);
|
||
|
|
||
|
// Objects are not required to be recycled in reverse deallocation order, but
|
||
|
// that is what the current implementation does.
|
||
|
Object *A3x = DUT.allocate(Cap, Allocator);
|
||
|
EXPECT_EQ(A3, A3x);
|
||
|
Object *A1x = DUT.allocate(Cap, Allocator);
|
||
|
EXPECT_EQ(A1, A1x);
|
||
|
Object *A2y = DUT.allocate(Cap, Allocator);
|
||
|
EXPECT_EQ(A2, A2y);
|
||
|
|
||
|
// Back to allocation from the BumpPtrAllocator.
|
||
|
Object *A4 = DUT.allocate(Cap, Allocator);
|
||
|
EXPECT_NE(A1, A4);
|
||
|
EXPECT_NE(A2, A4);
|
||
|
EXPECT_NE(A3, A4);
|
||
|
|
||
|
DUT.clear(Allocator);
|
||
|
}
|
||
|
|
||
|
} // end anonymous namespace
|