1 /*
2  * Copyright (C) 2021 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include "gtest/gtest.h"
18 
19 #include "berberis/base/large_mmap.h"
20 #include "berberis/base/mmap.h"
21 
22 namespace berberis {
23 
24 namespace {
25 
TEST(LargeMmap,Smoke)26 TEST(LargeMmap, Smoke) {
27   InitLargeMmap();
28 
29   auto large_p1 = static_cast<uint8_t*>(LargeMmapOrDie(kPageSize));
30   auto p1 = static_cast<uint8_t*>(MmapOrDie(kPageSize));
31   auto p2 = static_cast<uint8_t*>(MmapOrDie(kPageSize));
32   auto large_p2 = static_cast<uint8_t*>(LargeMmapOrDie(kPageSize));
33 
34 #if defined(__LP64__)
35   // We can only guarantee small mmaps are not in between of large mmaps.
36   EXPECT_LT(large_p1, large_p2);
37   EXPECT_TRUE(p1 < large_p1 || p1 > large_p2);
38   EXPECT_TRUE(p2 < large_p1 || p2 > large_p2);
39 #endif
40 
41   MunmapOrDie(large_p1, kPageSize);
42   MunmapOrDie(large_p2, kPageSize);
43   MunmapOrDie(p1, kPageSize);
44   MunmapOrDie(p2, kPageSize);
45 }
46 
47 }  // namespace
48 
49 }  // namespace berberis
50