1 /*
2 * Copyright (C) 2015 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 <android-base/file.h>
20
21 #include "dso.h"
22 #include "environment.h"
23
TEST(environment,GetCpusFromString)24 TEST(environment, GetCpusFromString) {
25 ASSERT_EQ(GetCpusFromString(""), std::vector<int>());
26 ASSERT_EQ(GetCpusFromString("0-2"), std::vector<int>({0, 1, 2}));
27 ASSERT_EQ(GetCpusFromString("0,2-3"), std::vector<int>({0, 2, 3}));
28 ASSERT_EQ(GetCpusFromString("1,0-3,3,4"), std::vector<int>({0, 1, 2, 3, 4}));
29 }
30
TEST(environment,PrepareVdsoFile)31 TEST(environment, PrepareVdsoFile) {
32 std::string content;
33 ASSERT_TRUE(android::base::ReadFileToString("/proc/self/maps", &content));
34 if (content.find("[vdso]") == std::string::npos) {
35 // Vdso isn't used, no need to test.
36 return;
37 }
38 TemporaryDir tmpdir;
39 ScopedTempFiles scoped_temp_files(tmpdir.path);
40 PrepareVdsoFile();
41 std::unique_ptr<Dso> dso = Dso::CreateDso(DSO_ELF_FILE, "[vdso]",
42 sizeof(size_t) == sizeof(uint64_t));
43 ASSERT_TRUE(dso != nullptr);
44 ASSERT_NE(dso->GetDebugFilePath(), "[vdso]");
45 }
46
TEST(environment,GetHardwareFromCpuInfo)47 TEST(environment, GetHardwareFromCpuInfo) {
48 std::string cpu_info = "CPU revision : 10\n\n"
49 "Hardware : Symbol i.MX6 Freeport_Plat Quad/DualLite (Device Tree)\n";
50 ASSERT_EQ("Symbol i.MX6 Freeport_Plat Quad/DualLite (Device Tree)",
51 GetHardwareFromCpuInfo(cpu_info));
52 }
53
TEST(environment,MappedFileOnlyExistInMemory)54 TEST(environment, MappedFileOnlyExistInMemory) {
55 ASSERT_TRUE(MappedFileOnlyExistInMemory(""));
56 ASSERT_TRUE(MappedFileOnlyExistInMemory("[stack]"));
57 ASSERT_TRUE(MappedFileOnlyExistInMemory("[anon:.bss]"));
58 ASSERT_FALSE(MappedFileOnlyExistInMemory("[vdso]"));
59 ASSERT_TRUE(MappedFileOnlyExistInMemory("/dev/__properties__/u:object_r"));
60 ASSERT_TRUE(MappedFileOnlyExistInMemory("//anon"));
61 ASSERT_TRUE(MappedFileOnlyExistInMemory("/memfd:/jit-cache"));
62 ASSERT_FALSE(MappedFileOnlyExistInMemory("./TemporaryFile-12345"));
63 ASSERT_FALSE(MappedFileOnlyExistInMemory("/system/lib64/libc.so"));
64 }
65
TEST(environment,SetPerfEventLimits)66 TEST(environment, SetPerfEventLimits) {
67 #if defined(__ANDROID__)
68 if (GetAndroidVersion() <= kAndroidVersionP) {
69 return;
70 }
71 uint64_t orig_freq = 100000;
72 size_t orig_percent = 25;
73 uint64_t orig_mlock_kb = 516;
74 bool has_freq = GetMaxSampleFrequency(&orig_freq);
75 bool has_percent = GetCpuTimeMaxPercent(&orig_percent);
76 bool has_mlock_kb = GetPerfEventMlockKb(&orig_mlock_kb);
77
78 ASSERT_TRUE(SetPerfEventLimits(orig_freq + 1, orig_percent + 1, orig_mlock_kb + 1));
79 if (has_freq) {
80 uint64_t value;
81 ASSERT_TRUE(GetMaxSampleFrequency(&value));
82 ASSERT_EQ(value, orig_freq + 1);
83 }
84 if (has_percent) {
85 size_t value;
86 ASSERT_TRUE(GetCpuTimeMaxPercent(&value));
87 ASSERT_EQ(value, orig_percent + 1);
88 }
89 if (has_mlock_kb) {
90 uint64_t value;
91 ASSERT_TRUE(GetPerfEventMlockKb(&value));
92 ASSERT_EQ(value, orig_mlock_kb + 1);
93 }
94 // Restore the environment.
95 ASSERT_TRUE(SetPerfEventLimits(orig_freq, orig_percent, orig_mlock_kb));
96 #else // !defined(__ANDROID__)
97 GTEST_LOG_(INFO) << "This test tests setting properties on Android.";
98 #endif
99 }
100