1//===-- sanitizer_vector_test.cpp -----------------------------------------===//
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// This file is a part of *Sanitizer runtime.
10//
11//===----------------------------------------------------------------------===//
12#include "sanitizer_common/sanitizer_ring_buffer.h"
13#include "gtest/gtest.h"
14
15namespace __sanitizer {
16
17struct LargeStruct {
18 int64_t v;
19 int64_t extra[3];
20
21 explicit LargeStruct(int64_t v) : v(v) {}
22 operator int64_t() { return v; }
23};
24
25struct Struct10Bytes {
26 short t[3];
27};
28
29TEST(RingBuffer, Construct) {
30 RingBuffer<int64_t> *RBlong = RingBuffer<int64_t>::New(20);
31 EXPECT_EQ(RBlong->size(), 20U);
32 RBlong->Delete();
33}
34
35template <class T> void TestRB() {
36 RingBuffer<T> *RB;
37 const size_t Sizes[] = {1, 2, 3, 5, 8, 16, 20, 40, 10000};
38 for (size_t Size : Sizes) {
39 RB = RingBuffer<T>::New(Size);
40 EXPECT_EQ(RB->size(), Size);
41 RB->Delete();
42 }
43
44 RB = RingBuffer<T>::New(4);
45 EXPECT_EQ(RB->size(), 4U);
46#define EXPECT_RING_BUFFER(a0, a1, a2, a3) \
47 EXPECT_EQ((int64_t)(*RB)[0], (int64_t)a0); \
48 EXPECT_EQ((int64_t)(*RB)[1], (int64_t)a1); \
49 EXPECT_EQ((int64_t)(*RB)[2], (int64_t)a2); \
50 EXPECT_EQ((int64_t)(*RB)[3], (int64_t)a3);
51
52 RB->push(T(1)); EXPECT_RING_BUFFER(1, 0, 0, 0);
53 RB->push(T(2)); EXPECT_RING_BUFFER(2, 1, 0, 0);
54 RB->push(T(3)); EXPECT_RING_BUFFER(3, 2, 1, 0);
55 RB->push(T(4)); EXPECT_RING_BUFFER(4, 3, 2, 1);
56 RB->push(T(5)); EXPECT_RING_BUFFER(5, 4, 3, 2);
57 RB->push(T(6)); EXPECT_RING_BUFFER(6, 5, 4, 3);
58 RB->push(T(7)); EXPECT_RING_BUFFER(7, 6, 5, 4);
59 RB->push(T(8)); EXPECT_RING_BUFFER(8, 7, 6, 5);
60 RB->push(T(9)); EXPECT_RING_BUFFER(9, 8, 7, 6);
61 RB->push(T(10)); EXPECT_RING_BUFFER(10, 9, 8, 7);
62 RB->push(T(11)); EXPECT_RING_BUFFER(11, 10, 9, 8);
63 RB->push(T(12)); EXPECT_RING_BUFFER(12, 11, 10, 9);
64
65#undef EXPECT_RING_BUFFER
66}
67
68#if SANITIZER_WORDSIZE == 64
69TEST(RingBuffer, int64) {
70 TestRB<int64_t>();
71}
72
73TEST(RingBuffer, LargeStruct) {
74 TestRB<LargeStruct>();
75}
76
77template<typename T>
78CompactRingBuffer<T> *AllocCompactRingBuffer(size_t count) {
79 size_t sz = sizeof(T) * count;
80 EXPECT_EQ(0ULL, sz % 4096);
81 void *p = MmapAlignedOrDieOnFatalError(sz, sz * 2, "CompactRingBuffer");
82 return new CompactRingBuffer<T>(p, sz);
83}
84
85TEST(CompactRingBuffer, int64) {
86 const size_t page_sizes[] = {1, 2, 4, 128};
87
88 for (size_t pages : page_sizes) {
89 size_t count = 4096 * pages / sizeof(int64_t);
90 auto R = AllocCompactRingBuffer<int64_t>(count);
91 int64_t top = count * 3 + 13;
92 for (int64_t i = 0; i < top; ++i) R->push(i);
93 for (int64_t i = 0; i < (int64_t)count; ++i)
94 EXPECT_EQ(top - i - 1, (*R)[i]);
95 }
96}
97#endif
98} // namespace __sanitizer
99

source code of compiler-rt/lib/sanitizer_common/tests/sanitizer_ring_buffer_test.cpp