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 24 #include <chrono> 25 #include <set> 26 #include <thread> 27 #include <vector> 28 29 #include <gtest/gtest.h> 30 31 #include <android-base/stringprintf.h> 32 33 using namespace std::chrono_literals; 34 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 } 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 } 119
