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//===-- allocator_test.cc -------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file is a part of XRay, a function call tracing system.
//
//===----------------------------------------------------------------------===//
#include "xray_allocator.h"
#include "xray_buffer_queue.h"
#include "gtest/gtest.h"
namespace __xray {
namespace {
struct TestData {
s64 First;
s64 Second;
};
TEST(AllocatorTest, Construction) { Allocator<sizeof(TestData)> A(2 << 11); }
TEST(AllocatorTest, Allocate) {
Allocator<sizeof(TestData)> A(2 << 11);
auto B = A.Allocate();
ASSERT_NE(B.Data, nullptr);
}
TEST(AllocatorTest, OverAllocate) {
Allocator<sizeof(TestData)> A(sizeof(TestData));
auto B1 = A.Allocate();
ASSERT_NE(B1.Data, nullptr);
auto B2 = A.Allocate();
ASSERT_EQ(B2.Data, nullptr);
}
struct OddSizedData {
s64 A;
s32 B;
};
TEST(AllocatorTest, AllocateBoundaries) {
Allocator<sizeof(OddSizedData)> A(GetPageSizeCached());
// Keep allocating until we hit a nullptr block.
unsigned C = 0;
auto Expected =
GetPageSizeCached() / RoundUpTo(sizeof(OddSizedData), kCacheLineSize);
for (auto B = A.Allocate(); B.Data != nullptr; B = A.Allocate(), ++C)
;
ASSERT_EQ(C, Expected);
}
TEST(AllocatorTest, AllocateFromNonOwned) {
bool Success = false;
BufferQueue BQ(GetPageSizeCached(), 10, Success);
ASSERT_TRUE(Success);
BufferQueue::Buffer B;
ASSERT_EQ(BQ.getBuffer(B), BufferQueue::ErrorCode::Ok);
{
Allocator<sizeof(OddSizedData)> A(B.Data, B.Size);
// Keep allocating until we hit a nullptr block.
unsigned C = 0;
auto Expected =
GetPageSizeCached() / RoundUpTo(sizeof(OddSizedData), kCacheLineSize);
for (auto B = A.Allocate(); B.Data != nullptr; B = A.Allocate(), ++C)
;
ASSERT_EQ(C, Expected);
}
ASSERT_EQ(BQ.releaseBuffer(B), BufferQueue::ErrorCode::Ok);
}
} // namespace
} // namespace __xray
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