Josh Gao | 911d729 | 2016-10-28 15:23:25 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 <procinfo/process.h> |
| 18 | |
| 19 | #include <fcntl.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <sys/types.h> |
| 22 | #include <unistd.h> |
| 23 | |
Josh Gao | 9cb2e2e | 2017-06-27 14:06:19 -0700 | [diff] [blame^] | 24 | #include <chrono> |
Josh Gao | 911d729 | 2016-10-28 15:23:25 -0700 | [diff] [blame] | 25 | #include <set> |
| 26 | #include <thread> |
| 27 | #include <vector> |
| 28 | |
| 29 | #include <gtest/gtest.h> |
| 30 | |
| 31 | #include <android-base/stringprintf.h> |
| 32 | |
Josh Gao | 9cb2e2e | 2017-06-27 14:06:19 -0700 | [diff] [blame^] | 33 | using namespace std::chrono_literals; |
| 34 | |
Josh Gao | 911d729 | 2016-10-28 15:23:25 -0700 | [diff] [blame] | 35 | #if !defined(__BIONIC__) |
| 36 | #include <syscall.h> |
| 37 | static pid_t gettid() { |
| 38 | return syscall(__NR_gettid); |
| 39 | } |
| 40 | #endif |
| 41 | |
| 42 | TEST(process_info, process_info_smoke) { |
| 43 | android::procinfo::ProcessInfo self; |
| 44 | ASSERT_TRUE(android::procinfo::GetProcessInfo(gettid(), &self)); |
| 45 | ASSERT_EQ(gettid(), self.tid); |
| 46 | ASSERT_EQ(getpid(), self.pid); |
| 47 | ASSERT_EQ(getppid(), self.ppid); |
| 48 | ASSERT_EQ(getuid(), self.uid); |
| 49 | ASSERT_EQ(getgid(), self.gid); |
| 50 | } |
| 51 | |
| 52 | TEST(process_info, process_info_proc_pid_fd_smoke) { |
| 53 | android::procinfo::ProcessInfo self; |
| 54 | int fd = open(android::base::StringPrintf("/proc/%d", gettid()).c_str(), O_DIRECTORY | O_RDONLY); |
| 55 | ASSERT_NE(-1, fd); |
| 56 | ASSERT_TRUE(android::procinfo::GetProcessInfoFromProcPidFd(fd, &self)); |
| 57 | |
| 58 | // Process name is capped at 15 bytes. |
| 59 | ASSERT_EQ("libprocinfo_tes", self.name); |
| 60 | ASSERT_EQ(gettid(), self.tid); |
| 61 | ASSERT_EQ(getpid(), self.pid); |
| 62 | ASSERT_EQ(getppid(), self.ppid); |
| 63 | ASSERT_EQ(getuid(), self.uid); |
| 64 | ASSERT_EQ(getgid(), self.gid); |
| 65 | close(fd); |
| 66 | } |
| 67 | |
| 68 | TEST(process_info, process_tids_smoke) { |
| 69 | pid_t main_tid = gettid(); |
| 70 | std::thread([main_tid]() { |
| 71 | pid_t thread_tid = gettid(); |
| 72 | |
| 73 | { |
| 74 | std::vector<pid_t> vec; |
| 75 | ASSERT_TRUE(android::procinfo::GetProcessTids(getpid(), &vec)); |
| 76 | ASSERT_EQ(1, std::count(vec.begin(), vec.end(), main_tid)); |
| 77 | ASSERT_EQ(1, std::count(vec.begin(), vec.end(), thread_tid)); |
| 78 | } |
| 79 | |
| 80 | { |
| 81 | std::set<pid_t> set; |
| 82 | ASSERT_TRUE(android::procinfo::GetProcessTids(getpid(), &set)); |
| 83 | ASSERT_EQ(1, std::count(set.begin(), set.end(), main_tid)); |
| 84 | ASSERT_EQ(1, std::count(set.begin(), set.end(), thread_tid)); |
| 85 | } |
| 86 | }).join(); |
| 87 | } |
Josh Gao | 9cb2e2e | 2017-06-27 14:06:19 -0700 | [diff] [blame^] | 88 | |
| 89 | TEST(process_info, process_state) { |
| 90 | int pipefd[2]; |
| 91 | ASSERT_EQ(0, pipe2(pipefd, O_CLOEXEC)); |
| 92 | pid_t forkpid = fork(); |
| 93 | |
| 94 | ASSERT_NE(-1, forkpid); |
| 95 | if (forkpid == 0) { |
| 96 | close(pipefd[1]); |
| 97 | char buf; |
| 98 | TEMP_FAILURE_RETRY(read(pipefd[0], &buf, 1)); |
| 99 | _exit(0); |
| 100 | } |
| 101 | |
| 102 | // Give the child some time to get to the read. |
| 103 | std::this_thread::sleep_for(100ms); |
| 104 | |
| 105 | android::procinfo::ProcessInfo procinfo; |
| 106 | ASSERT_TRUE(android::procinfo::GetProcessInfo(forkpid, &procinfo)); |
| 107 | ASSERT_EQ(android::procinfo::kProcessStateSleeping, procinfo.state); |
| 108 | |
| 109 | ASSERT_EQ(0, kill(forkpid, SIGKILL)); |
| 110 | |
| 111 | // Give the kernel some time to kill the child. |
| 112 | std::this_thread::sleep_for(100ms); |
| 113 | |
| 114 | ASSERT_TRUE(android::procinfo::GetProcessInfo(forkpid, &procinfo)); |
| 115 | ASSERT_EQ(android::procinfo::kProcessStateZombie, procinfo.state); |
| 116 | |
| 117 | ASSERT_EQ(forkpid, waitpid(forkpid, nullptr, 0)); |
| 118 | } |