1//===-- basic.cpp -----------------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "gwp_asan/tests/harness.h"
10
11TEST_F(CustomGuardedPoolAllocator, BasicAllocation) {
12 InitNumSlots(1);
13 void *Ptr = GPA.allocate(1);
14 EXPECT_NE(nullptr, Ptr);
15 EXPECT_TRUE(GPA.pointerIsMine(Ptr));
16 EXPECT_EQ(1u, GPA.getSize(Ptr));
17 GPA.deallocate(Ptr);
18}
19
20TEST_F(DefaultGuardedPoolAllocator, NullptrIsNotMine) {
21 EXPECT_FALSE(GPA.pointerIsMine(nullptr));
22}
23
24TEST_F(CustomGuardedPoolAllocator, SizedAllocations) {
25 InitNumSlots(1);
26
27 std::size_t MaxAllocSize = GPA.getAllocatorState()->maximumAllocationSize();
28 EXPECT_TRUE(MaxAllocSize > 0);
29
30 for (unsigned AllocSize = 1; AllocSize <= MaxAllocSize; AllocSize <<= 1) {
31 void *Ptr = GPA.allocate(AllocSize);
32 EXPECT_NE(nullptr, Ptr);
33 EXPECT_TRUE(GPA.pointerIsMine(Ptr));
34 EXPECT_EQ(AllocSize, GPA.getSize(Ptr));
35 GPA.deallocate(Ptr);
36 }
37}
38
39TEST_F(DefaultGuardedPoolAllocator, TooLargeAllocation) {
40 EXPECT_EQ(nullptr,
41 GPA.allocate(GPA.getAllocatorState()->maximumAllocationSize() + 1));
42 EXPECT_EQ(nullptr, GPA.allocate(SIZE_MAX, 0));
43 EXPECT_EQ(nullptr, GPA.allocate(SIZE_MAX, 1));
44 EXPECT_EQ(nullptr, GPA.allocate(0, SIZE_MAX / 2));
45 EXPECT_EQ(nullptr, GPA.allocate(1, SIZE_MAX / 2));
46 EXPECT_EQ(nullptr, GPA.allocate(SIZE_MAX, SIZE_MAX / 2));
47}
48
49TEST_F(DefaultGuardedPoolAllocator, ZeroSizeAndAlignmentAllocations) {
50 void *P;
51 EXPECT_NE(nullptr, (P = GPA.allocate(0, 0)));
52 GPA.deallocate(P);
53 EXPECT_NE(nullptr, (P = GPA.allocate(1, 0)));
54 GPA.deallocate(P);
55 EXPECT_NE(nullptr, (P = GPA.allocate(0, 1)));
56 GPA.deallocate(P);
57}
58
59TEST_F(DefaultGuardedPoolAllocator, NonPowerOfTwoAlignment) {
60 EXPECT_EQ(nullptr, GPA.allocate(0, 3));
61 EXPECT_EQ(nullptr, GPA.allocate(1, 3));
62 EXPECT_EQ(nullptr, GPA.allocate(0, SIZE_MAX));
63 EXPECT_EQ(nullptr, GPA.allocate(1, SIZE_MAX));
64}
65
66// Added multi-page slots? You'll need to expand this test.
67TEST_F(DefaultGuardedPoolAllocator, TooBigForSinglePageSlots) {
68 EXPECT_EQ(nullptr, GPA.allocate(0x1001, 0));
69 EXPECT_EQ(nullptr, GPA.allocate(0x1001, 1));
70 EXPECT_EQ(nullptr, GPA.allocate(0x1001, 0x1000));
71 EXPECT_EQ(nullptr, GPA.allocate(1, 0x2000));
72 EXPECT_EQ(nullptr, GPA.allocate(0, 0x2000));
73}
74
75TEST_F(CustomGuardedPoolAllocator, AllocAllSlots) {
76 constexpr unsigned kNumSlots = 128;
77 InitNumSlots(kNumSlots);
78 void *Ptrs[kNumSlots];
79 for (unsigned i = 0; i < kNumSlots; ++i) {
80 Ptrs[i] = GPA.allocate(1);
81 EXPECT_NE(nullptr, Ptrs[i]);
82 EXPECT_TRUE(GPA.pointerIsMine(Ptrs[i]));
83 }
84
85 // This allocation should fail as all the slots are used.
86 void *Ptr = GPA.allocate(1);
87 EXPECT_EQ(nullptr, Ptr);
88 EXPECT_FALSE(GPA.pointerIsMine(nullptr));
89
90 for (unsigned i = 0; i < kNumSlots; ++i)
91 GPA.deallocate(Ptrs[i]);
92}
93

source code of compiler-rt/lib/gwp_asan/tests/basic.cpp