1 /**
2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <gtest/gtest.h>
17
18 #include "libpandabase/utils/asan_interface.h"
19 #include "libpandabase/mem/mem.h"
20 #include "libpandabase/os/mem.h"
21 #include "runtime/mem/tlab.h"
22
23 namespace panda::mem {
24
25 constexpr size_t TLAB_TEST_SIZE = 4_MB;
26
27 class TLABTest : public testing::Test {
28 public:
TLABTest()29 TLABTest()
30 {
31 // Logger::InitializeStdLogging(Logger::Level::DEBUG, Logger::Component::ALL);
32 #ifdef PANDA_NIGHTLY_TEST_ON
33 seed_ = time(NULL);
34 #else
35 seed_ = 0x0BADDEAD;
36 #endif
37 srand(seed_);
38 }
39
~TLABTest()40 ~TLABTest()
41 {
42 for (auto i : allocated_mem_mmap_) {
43 panda::os::mem::UnmapRaw(std::get<0>(i), std::get<1>(i));
44 }
45 // Logger::Destroy();
46 }
47
48 protected:
CreateNewTLAB()49 TLAB *CreateNewTLAB()
50 {
51 void *mem = panda::os::mem::MapRWAnonymousRaw(TLAB_TEST_SIZE);
52 ASAN_UNPOISON_MEMORY_REGION(mem, TLAB_TEST_SIZE);
53 std::pair<void *, size_t> new_pair {mem, TLAB_TEST_SIZE};
54 allocated_mem_mmap_.push_back(new_pair);
55 auto newTLAB =
56 new (mem) TLAB(ToVoidPtr(ToUintPtr(mem) + sizeof(mem::TLAB)), TLAB_TEST_SIZE - sizeof(mem::TLAB));
57 return newTLAB;
58 }
59
60 std::vector<std::pair<void *, size_t>> allocated_mem_mmap_;
61 unsigned seed_;
62 };
63
TEST_F(TLABTest,AccessTest)64 TEST_F(TLABTest, AccessTest)
65 {
66 static constexpr size_t ALLOC_SIZE = 512;
67 static constexpr size_t ALLOC_COUNT = 500000;
68 TLAB *tlab = CreateNewTLAB();
69 ASSERT_TRUE(tlab != nullptr);
70 // All accesses has been created according implementation as we want to create in JIT.
71 bool overflow = false;
72 auto free_pointer_addr = static_cast<uintptr_t *>(ToVoidPtr(ToUintPtr(tlab) + TLAB::TLABFreePointerOffset()));
73 auto end_addr = static_cast<uintptr_t *>(ToVoidPtr(ToUintPtr(tlab) + TLAB::TLABEndAddrOffset()));
74 for (size_t i = 1; i < ALLOC_COUNT; i++) {
75 uintptr_t old_free_pointer = (*free_pointer_addr);
76 // NOTE: All objects, allocated in Runtime, must have the DEFAULT_ALIGNMENT alignment.
77 void *mem = tlab->Alloc(AlignUp(ALLOC_SIZE, DEFAULT_ALIGNMENT_IN_BYTES));
78 if (mem != nullptr) {
79 ASSERT_TRUE(ToUintPtr(mem) == old_free_pointer);
80 } else {
81 ASSERT_TRUE(*end_addr < (old_free_pointer + ALLOC_SIZE));
82 overflow = true;
83 }
84 }
85 ASSERT_EQ(overflow, true) << "Increase the size of alloc_count to get overflow";
86 }
87
TEST_F(TLABTest,AlignedAlloc)88 TEST_F(TLABTest, AlignedAlloc)
89 {
90 constexpr size_t ARRAY_SIZE = 1024;
91 TLAB *tlab = CreateNewTLAB();
92 Alignment align = DEFAULT_ALIGNMENT;
93 std::array<int *, ARRAY_SIZE> arr;
94
95 size_t mask = GetAlignmentInBytes(align) - 1;
96
97 // Allocations
98 srand(seed_);
99 for (size_t i = 0; i < ARRAY_SIZE; ++i) {
100 arr[i] = static_cast<int *>(tlab->Alloc(sizeof(int)));
101 *arr[i] = rand() % std::numeric_limits<int>::max();
102 }
103
104 // Allocations checking
105 srand(seed_);
106 for (size_t i = 0; i < ARRAY_SIZE; ++i) {
107 ASSERT_NE(arr[i], nullptr) << "value of i: " << i << ", align: " << align;
108 ASSERT_EQ(reinterpret_cast<size_t>(arr[i]) & mask, static_cast<size_t>(0))
109 << "value of i: " << i << ", align: " << align;
110 ASSERT_EQ(*arr[i], rand() % std::numeric_limits<int>::max()) << "value of i: " << i << ", align: " << align;
111 }
112
113 void *ptr = tlab->Alloc(TLAB_TEST_SIZE);
114 ASSERT_EQ(ptr, nullptr) << "Here Alloc with allocation size = " << TLAB_TEST_SIZE << " bytes should return nullptr";
115 }
116
117 } // namespace panda::mem
118