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//===-- basic.cpp -----------------------------------------------*- C++ -*-===//
//
// 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 "gwp_asan/tests/harness.h"
#include <unistd.h>
TEST_F(CustomGuardedPoolAllocator, BasicAllocation) {
InitNumSlots(1);
void *Ptr = GPA.allocate(1);
EXPECT_NE(nullptr, Ptr);
EXPECT_TRUE(GPA.pointerIsMine(Ptr));
EXPECT_EQ(1u, GPA.getSize(Ptr));
GPA.deallocate(Ptr);
}
TEST_F(DefaultGuardedPoolAllocator, NullptrIsNotMine) {
EXPECT_FALSE(GPA.pointerIsMine(nullptr));
}
TEST_F(CustomGuardedPoolAllocator, SizedAllocations) {
InitNumSlots(1);
std::size_t MaxAllocSize = GPA.getAllocatorState()->maximumAllocationSize();
EXPECT_TRUE(MaxAllocSize > 0);
for (unsigned AllocSize = 1; AllocSize <= MaxAllocSize; AllocSize <<= 1) {
void *Ptr = GPA.allocate(AllocSize);
EXPECT_NE(nullptr, Ptr);
EXPECT_TRUE(GPA.pointerIsMine(Ptr));
EXPECT_EQ(AllocSize, GPA.getSize(Ptr));
GPA.deallocate(Ptr);
}
}
TEST_F(DefaultGuardedPoolAllocator, TooLargeAllocation) {
EXPECT_EQ(nullptr,
GPA.allocate(GPA.getAllocatorState()->maximumAllocationSize() + 1));
EXPECT_EQ(nullptr, GPA.allocate(SIZE_MAX, 0));
EXPECT_EQ(nullptr, GPA.allocate(SIZE_MAX, 1));
EXPECT_EQ(nullptr, GPA.allocate(0, SIZE_MAX / 2));
EXPECT_EQ(nullptr, GPA.allocate(1, SIZE_MAX / 2));
EXPECT_EQ(nullptr, GPA.allocate(SIZE_MAX, SIZE_MAX / 2));
}
TEST_F(DefaultGuardedPoolAllocator, ZeroSizeAndAlignmentAllocations) {
void *P;
EXPECT_NE(nullptr, (P = GPA.allocate(0, 0)));
GPA.deallocate(P);
EXPECT_NE(nullptr, (P = GPA.allocate(1, 0)));
GPA.deallocate(P);
EXPECT_NE(nullptr, (P = GPA.allocate(0, 1)));
GPA.deallocate(P);
}
TEST_F(DefaultGuardedPoolAllocator, NonPowerOfTwoAlignment) {
EXPECT_EQ(nullptr, GPA.allocate(0, 3));
EXPECT_EQ(nullptr, GPA.allocate(1, 3));
EXPECT_EQ(nullptr, GPA.allocate(0, SIZE_MAX));
EXPECT_EQ(nullptr, GPA.allocate(1, SIZE_MAX));
}
// Added multi-page slots? You'll need to expand this test.
TEST_F(DefaultGuardedPoolAllocator, TooBigForSinglePageSlots) {
size_t PageSize = sysconf(_SC_PAGESIZE);
EXPECT_EQ(nullptr, GPA.allocate(PageSize + 1, 0));
EXPECT_EQ(nullptr, GPA.allocate(PageSize + 1, 1));
EXPECT_EQ(nullptr, GPA.allocate(PageSize + 1, PageSize));
EXPECT_EQ(nullptr, GPA.allocate(1, 2 * PageSize));
EXPECT_EQ(nullptr, GPA.allocate(0, 2 * PageSize));
}
TEST_F(CustomGuardedPoolAllocator, AllocAllSlots) {
constexpr unsigned kNumSlots = 128;
InitNumSlots(kNumSlots);
void *Ptrs[kNumSlots];
for (unsigned i = 0; i < kNumSlots; ++i) {
Ptrs[i] = GPA.allocate(1);
EXPECT_NE(nullptr, Ptrs[i]);
EXPECT_TRUE(GPA.pointerIsMine(Ptrs[i]));
}
// This allocation should fail as all the slots are used.
void *Ptr = GPA.allocate(1);
EXPECT_EQ(nullptr, Ptr);
EXPECT_FALSE(GPA.pointerIsMine(nullptr));
for (unsigned i = 0; i < kNumSlots; ++i)
GPA.deallocate(Ptrs[i]);
}
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