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shaka-packager/base/process/process_util_unittest.cc

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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#define _CRT_SECURE_NO_WARNINGS
#include <limits>
#include "base/command_line.h"
#include "base/debug/alias.h"
#include "base/debug/stack_trace.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/path_service.h"
#include "base/posix/eintr_wrapper.h"
#include "base/process/kill.h"
#include "base/process/launch.h"
#include "base/process/memory.h"
#include "base/process/process.h"
#include "base/process/process_metrics.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/multiprocess_test.h"
#include "base/test/test_timeouts.h"
#include "base/third_party/dynamic_annotations/dynamic_annotations.h"
#include "base/threading/platform_thread.h"
#include "base/threading/thread.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/multiprocess_func_list.h"
#if defined(OS_LINUX)
#include <glib.h>
#include <malloc.h>
#include <sched.h>
#endif
#if defined(OS_POSIX)
#include <dlfcn.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/wait.h>
#endif
#if defined(OS_WIN)
#include <windows.h>
#endif
#if defined(OS_MACOSX)
#include <mach/vm_param.h>
#include <malloc/malloc.h>
#endif
using base::FilePath;
namespace {
#if defined(OS_WIN)
const wchar_t kProcessName[] = L"base_unittests.exe";
#else
const wchar_t kProcessName[] = L"base_unittests";
#endif // defined(OS_WIN)
#if defined(OS_ANDROID)
const char kShellPath[] = "/system/bin/sh";
const char kPosixShell[] = "sh";
#else
const char kShellPath[] = "/bin/sh";
const char kPosixShell[] = "bash";
#endif
const char kSignalFileSlow[] = "SlowChildProcess.die";
const char kSignalFileCrash[] = "CrashingChildProcess.die";
const char kSignalFileKill[] = "KilledChildProcess.die";
#if defined(OS_WIN)
const int kExpectedStillRunningExitCode = 0x102;
const int kExpectedKilledExitCode = 1;
#else
const int kExpectedStillRunningExitCode = 0;
#endif
// Sleeps until file filename is created.
void WaitToDie(const char* filename) {
FILE* fp;
do {
base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(10));
fp = fopen(filename, "r");
} while (!fp);
fclose(fp);
}
// Signals children they should die now.
void SignalChildren(const char* filename) {
FILE* fp = fopen(filename, "w");
fclose(fp);
}
// Using a pipe to the child to wait for an event was considered, but
// there were cases in the past where pipes caused problems (other
// libraries closing the fds, child deadlocking). This is a simple
// case, so it's not worth the risk. Using wait loops is discouraged
// in most instances.
base::TerminationStatus WaitForChildTermination(base::ProcessHandle handle,
int* exit_code) {
// Now we wait until the result is something other than STILL_RUNNING.
base::TerminationStatus status = base::TERMINATION_STATUS_STILL_RUNNING;
const base::TimeDelta kInterval = base::TimeDelta::FromMilliseconds(20);
base::TimeDelta waited;
do {
status = base::GetTerminationStatus(handle, exit_code);
base::PlatformThread::Sleep(kInterval);
waited += kInterval;
} while (status == base::TERMINATION_STATUS_STILL_RUNNING &&
// Waiting for more time for process termination on android devices.
#if defined(OS_ANDROID)
waited < TestTimeouts::large_test_timeout());
#else
waited < TestTimeouts::action_max_timeout());
#endif
return status;
}
} // namespace
class ProcessUtilTest : public base::MultiProcessTest {
public:
#if defined(OS_POSIX)
// Spawn a child process that counts how many file descriptors are open.
int CountOpenFDsInChild();
#endif
// Converts the filename to a platform specific filepath.
// On Android files can not be created in arbitrary directories.
static std::string GetSignalFilePath(const char* filename);
};
std::string ProcessUtilTest::GetSignalFilePath(const char* filename) {
#if !defined(OS_ANDROID)
return filename;
#else
FilePath tmp_dir;
PathService::Get(base::DIR_CACHE, &tmp_dir);
tmp_dir = tmp_dir.Append(filename);
return tmp_dir.value();
#endif
}
MULTIPROCESS_TEST_MAIN(SimpleChildProcess) {
return 0;
}
TEST_F(ProcessUtilTest, SpawnChild) {
base::ProcessHandle handle = this->SpawnChild("SimpleChildProcess", false);
ASSERT_NE(base::kNullProcessHandle, handle);
EXPECT_TRUE(base::WaitForSingleProcess(
handle, TestTimeouts::action_max_timeout()));
base::CloseProcessHandle(handle);
}
MULTIPROCESS_TEST_MAIN(SlowChildProcess) {
WaitToDie(ProcessUtilTest::GetSignalFilePath(kSignalFileSlow).c_str());
return 0;
}
TEST_F(ProcessUtilTest, KillSlowChild) {
const std::string signal_file =
ProcessUtilTest::GetSignalFilePath(kSignalFileSlow);
remove(signal_file.c_str());
base::ProcessHandle handle = this->SpawnChild("SlowChildProcess", false);
ASSERT_NE(base::kNullProcessHandle, handle);
SignalChildren(signal_file.c_str());
EXPECT_TRUE(base::WaitForSingleProcess(
handle, TestTimeouts::action_max_timeout()));
base::CloseProcessHandle(handle);
remove(signal_file.c_str());
}
// Times out on Linux and Win, flakes on other platforms, http://crbug.com/95058
TEST_F(ProcessUtilTest, DISABLED_GetTerminationStatusExit) {
const std::string signal_file =
ProcessUtilTest::GetSignalFilePath(kSignalFileSlow);
remove(signal_file.c_str());
base::ProcessHandle handle = this->SpawnChild("SlowChildProcess", false);
ASSERT_NE(base::kNullProcessHandle, handle);
int exit_code = 42;
EXPECT_EQ(base::TERMINATION_STATUS_STILL_RUNNING,
base::GetTerminationStatus(handle, &exit_code));
EXPECT_EQ(kExpectedStillRunningExitCode, exit_code);
SignalChildren(signal_file.c_str());
exit_code = 42;
base::TerminationStatus status =
WaitForChildTermination(handle, &exit_code);
EXPECT_EQ(base::TERMINATION_STATUS_NORMAL_TERMINATION, status);
EXPECT_EQ(0, exit_code);
base::CloseProcessHandle(handle);
remove(signal_file.c_str());
}
#if defined(OS_WIN)
// TODO(cpu): figure out how to test this in other platforms.
TEST_F(ProcessUtilTest, GetProcId) {
base::ProcessId id1 = base::GetProcId(GetCurrentProcess());
EXPECT_NE(0ul, id1);
base::ProcessHandle handle = this->SpawnChild("SimpleChildProcess", false);
ASSERT_NE(base::kNullProcessHandle, handle);
base::ProcessId id2 = base::GetProcId(handle);
EXPECT_NE(0ul, id2);
EXPECT_NE(id1, id2);
base::CloseProcessHandle(handle);
}
#endif
#if !defined(OS_MACOSX)
// This test is disabled on Mac, since it's flaky due to ReportCrash
// taking a variable amount of time to parse and load the debug and
// symbol data for this unit test's executable before firing the
// signal handler.
//
// TODO(gspencer): turn this test process into a very small program
// with no symbols (instead of using the multiprocess testing
// framework) to reduce the ReportCrash overhead.
MULTIPROCESS_TEST_MAIN(CrashingChildProcess) {
WaitToDie(ProcessUtilTest::GetSignalFilePath(kSignalFileCrash).c_str());
#if defined(OS_POSIX)
// Have to disable to signal handler for segv so we can get a crash
// instead of an abnormal termination through the crash dump handler.
::signal(SIGSEGV, SIG_DFL);
#endif
// Make this process have a segmentation fault.
volatile int* oops = NULL;
*oops = 0xDEAD;
return 1;
}
// This test intentionally crashes, so we don't need to run it under
// AddressSanitizer.
// TODO(jschuh): crbug.com/175753 Fix this in Win64 bots.
#if defined(ADDRESS_SANITIZER) || (defined(OS_WIN) && defined(ARCH_CPU_X86_64))
#define MAYBE_GetTerminationStatusCrash DISABLED_GetTerminationStatusCrash
#else
#define MAYBE_GetTerminationStatusCrash GetTerminationStatusCrash
#endif
TEST_F(ProcessUtilTest, MAYBE_GetTerminationStatusCrash) {
const std::string signal_file =
ProcessUtilTest::GetSignalFilePath(kSignalFileCrash);
remove(signal_file.c_str());
base::ProcessHandle handle = this->SpawnChild("CrashingChildProcess",
false);
ASSERT_NE(base::kNullProcessHandle, handle);
int exit_code = 42;
EXPECT_EQ(base::TERMINATION_STATUS_STILL_RUNNING,
base::GetTerminationStatus(handle, &exit_code));
EXPECT_EQ(kExpectedStillRunningExitCode, exit_code);
SignalChildren(signal_file.c_str());
exit_code = 42;
base::TerminationStatus status =
WaitForChildTermination(handle, &exit_code);
EXPECT_EQ(base::TERMINATION_STATUS_PROCESS_CRASHED, status);
#if defined(OS_WIN)
EXPECT_EQ(0xc0000005, exit_code);
#elif defined(OS_POSIX)
int signaled = WIFSIGNALED(exit_code);
EXPECT_NE(0, signaled);
int signal = WTERMSIG(exit_code);
EXPECT_EQ(SIGSEGV, signal);
#endif
base::CloseProcessHandle(handle);
// Reset signal handlers back to "normal".
base::debug::EnableInProcessStackDumping();
remove(signal_file.c_str());
}
#endif // !defined(OS_MACOSX)
MULTIPROCESS_TEST_MAIN(KilledChildProcess) {
WaitToDie(ProcessUtilTest::GetSignalFilePath(kSignalFileKill).c_str());
#if defined(OS_WIN)
// Kill ourselves.
HANDLE handle = ::OpenProcess(PROCESS_ALL_ACCESS, 0, ::GetCurrentProcessId());
::TerminateProcess(handle, kExpectedKilledExitCode);
#elif defined(OS_POSIX)
// Send a SIGKILL to this process, just like the OOM killer would.
::kill(getpid(), SIGKILL);
#endif
return 1;
}
TEST_F(ProcessUtilTest, GetTerminationStatusKill) {
const std::string signal_file =
ProcessUtilTest::GetSignalFilePath(kSignalFileKill);
remove(signal_file.c_str());
base::ProcessHandle handle = this->SpawnChild("KilledChildProcess",
false);
ASSERT_NE(base::kNullProcessHandle, handle);
int exit_code = 42;
EXPECT_EQ(base::TERMINATION_STATUS_STILL_RUNNING,
base::GetTerminationStatus(handle, &exit_code));
EXPECT_EQ(kExpectedStillRunningExitCode, exit_code);
SignalChildren(signal_file.c_str());
exit_code = 42;
base::TerminationStatus status =
WaitForChildTermination(handle, &exit_code);
EXPECT_EQ(base::TERMINATION_STATUS_PROCESS_WAS_KILLED, status);
#if defined(OS_WIN)
EXPECT_EQ(kExpectedKilledExitCode, exit_code);
#elif defined(OS_POSIX)
int signaled = WIFSIGNALED(exit_code);
EXPECT_NE(0, signaled);
int signal = WTERMSIG(exit_code);
EXPECT_EQ(SIGKILL, signal);
#endif
base::CloseProcessHandle(handle);
remove(signal_file.c_str());
}
// Ensure that the priority of a process is restored correctly after
// backgrounding and restoring.
// Note: a platform may not be willing or able to lower the priority of
// a process. The calls to SetProcessBackground should be noops then.
TEST_F(ProcessUtilTest, SetProcessBackgrounded) {
base::ProcessHandle handle = this->SpawnChild("SimpleChildProcess", false);
base::Process process(handle);
int old_priority = process.GetPriority();
#if defined(OS_WIN)
EXPECT_TRUE(process.SetProcessBackgrounded(true));
EXPECT_TRUE(process.IsProcessBackgrounded());
EXPECT_TRUE(process.SetProcessBackgrounded(false));
EXPECT_FALSE(process.IsProcessBackgrounded());
#else
process.SetProcessBackgrounded(true);
process.SetProcessBackgrounded(false);
#endif
int new_priority = process.GetPriority();
EXPECT_EQ(old_priority, new_priority);
}
// Same as SetProcessBackgrounded but to this very process. It uses
// a different code path at least for Windows.
TEST_F(ProcessUtilTest, SetProcessBackgroundedSelf) {
base::Process process(base::Process::Current().handle());
int old_priority = process.GetPriority();
#if defined(OS_WIN)
EXPECT_TRUE(process.SetProcessBackgrounded(true));
EXPECT_TRUE(process.IsProcessBackgrounded());
EXPECT_TRUE(process.SetProcessBackgrounded(false));
EXPECT_FALSE(process.IsProcessBackgrounded());
#else
process.SetProcessBackgrounded(true);
process.SetProcessBackgrounded(false);
#endif
int new_priority = process.GetPriority();
EXPECT_EQ(old_priority, new_priority);
}
#if defined(OS_LINUX) || defined(OS_ANDROID)
TEST_F(ProcessUtilTest, GetSystemMemoryInfo) {
base::SystemMemoryInfoKB info;
EXPECT_TRUE(base::GetSystemMemoryInfo(&info));
// Ensure each field received a value.
EXPECT_GT(info.total, 0);
EXPECT_GT(info.free, 0);
EXPECT_GT(info.buffers, 0);
EXPECT_GT(info.cached, 0);
EXPECT_GT(info.active_anon, 0);
EXPECT_GT(info.inactive_anon, 0);
EXPECT_GT(info.active_file, 0);
EXPECT_GT(info.inactive_file, 0);
// All the values should be less than the total amount of memory.
EXPECT_LT(info.free, info.total);
EXPECT_LT(info.buffers, info.total);
EXPECT_LT(info.cached, info.total);
EXPECT_LT(info.active_anon, info.total);
EXPECT_LT(info.inactive_anon, info.total);
EXPECT_LT(info.active_file, info.total);
EXPECT_LT(info.inactive_file, info.total);
#if defined(OS_CHROMEOS)
// Chrome OS exposes shmem.
EXPECT_GT(info.shmem, 0);
EXPECT_LT(info.shmem, info.total);
// Chrome unit tests are not run on actual Chrome OS hardware, so gem_objects
// and gem_size cannot be tested here.
#endif
}
#endif // defined(OS_LINUX) || defined(OS_ANDROID)
// TODO(estade): if possible, port these 2 tests.
#if defined(OS_WIN)
TEST_F(ProcessUtilTest, CalcFreeMemory) {
scoped_ptr<base::ProcessMetrics> metrics(
base::ProcessMetrics::CreateProcessMetrics(::GetCurrentProcess()));
ASSERT_TRUE(NULL != metrics.get());
bool using_tcmalloc = false;
// Detect if we are using tcmalloc
#if !defined(NO_TCMALLOC)
const char* chrome_allocator = getenv("CHROME_ALLOCATOR");
if (!chrome_allocator || _stricmp(chrome_allocator, "tcmalloc") == 0)
using_tcmalloc = true;
#endif
// Typical values here is ~1900 for total and ~1000 for largest. Obviously
// it depends in what other tests have done to this process.
base::FreeMBytes free_mem1 = {0};
EXPECT_TRUE(metrics->CalculateFreeMemory(&free_mem1));
EXPECT_LT(10u, free_mem1.total);
EXPECT_LT(10u, free_mem1.largest);
EXPECT_GT(2048u, free_mem1.total);
EXPECT_GT(2048u, free_mem1.largest);
EXPECT_GE(free_mem1.total, free_mem1.largest);
EXPECT_TRUE(NULL != free_mem1.largest_ptr);
// Allocate 20M and check again. It should have gone down.
const int kAllocMB = 20;
scoped_ptr<char[]> alloc(new char[kAllocMB * 1024 * 1024]);
size_t expected_total = free_mem1.total - kAllocMB;
size_t expected_largest = free_mem1.largest;
base::FreeMBytes free_mem2 = {0};
EXPECT_TRUE(metrics->CalculateFreeMemory(&free_mem2));
EXPECT_GE(free_mem2.total, free_mem2.largest);
// This test is flaky when using tcmalloc, because tcmalloc
// allocation strategy sometimes results in less than the
// full drop of 20Mb of free memory.
if (!using_tcmalloc)
EXPECT_GE(expected_total, free_mem2.total);
EXPECT_GE(expected_largest, free_mem2.largest);
EXPECT_TRUE(NULL != free_mem2.largest_ptr);
}
TEST_F(ProcessUtilTest, GetAppOutput) {
// Let's create a decently long message.
std::string message;
for (int i = 0; i < 1025; i++) { // 1025 so it does not end on a kilo-byte
// boundary.
message += "Hello!";
}
// cmd.exe's echo always adds a \r\n to its output.
std::string expected(message);
expected += "\r\n";
FilePath cmd(L"cmd.exe");
CommandLine cmd_line(cmd);
cmd_line.AppendArg("/c");
cmd_line.AppendArg("echo " + message + "");
std::string output;
ASSERT_TRUE(base::GetAppOutput(cmd_line, &output));
EXPECT_EQ(expected, output);
// Let's make sure stderr is ignored.
CommandLine other_cmd_line(cmd);
other_cmd_line.AppendArg("/c");
// http://msdn.microsoft.com/library/cc772622.aspx
cmd_line.AppendArg("echo " + message + " >&2");
output.clear();
ASSERT_TRUE(base::GetAppOutput(other_cmd_line, &output));
EXPECT_EQ("", output);
}
TEST_F(ProcessUtilTest, LaunchAsUser) {
base::UserTokenHandle token;
ASSERT_TRUE(OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &token));
std::wstring cmdline =
this->MakeCmdLine("SimpleChildProcess", false).GetCommandLineString();
base::LaunchOptions options;
options.as_user = token;
EXPECT_TRUE(base::LaunchProcess(cmdline, options, NULL));
}
#endif // defined(OS_WIN)
#if defined(OS_POSIX)
namespace {
// Returns the maximum number of files that a process can have open.
// Returns 0 on error.
int GetMaxFilesOpenInProcess() {
struct rlimit rlim;
if (getrlimit(RLIMIT_NOFILE, &rlim) != 0) {
return 0;
}
// rlim_t is a uint64 - clip to maxint. We do this since FD #s are ints
// which are all 32 bits on the supported platforms.
rlim_t max_int = static_cast<rlim_t>(std::numeric_limits<int32>::max());
if (rlim.rlim_cur > max_int) {
return max_int;
}
return rlim.rlim_cur;
}
const int kChildPipe = 20; // FD # for write end of pipe in child process.
} // namespace
MULTIPROCESS_TEST_MAIN(ProcessUtilsLeakFDChildProcess) {
// This child process counts the number of open FDs, it then writes that
// number out to a pipe connected to the parent.
int num_open_files = 0;
int write_pipe = kChildPipe;
int max_files = GetMaxFilesOpenInProcess();
for (int i = STDERR_FILENO + 1; i < max_files; i++) {
if (i != kChildPipe) {
int fd;
if ((fd = HANDLE_EINTR(dup(i))) != -1) {
close(fd);
num_open_files += 1;
}
}
}
int written = HANDLE_EINTR(write(write_pipe, &num_open_files,
sizeof(num_open_files)));
DCHECK_EQ(static_cast<size_t>(written), sizeof(num_open_files));
int ret = HANDLE_EINTR(close(write_pipe));
DPCHECK(ret == 0);
return 0;
}
int ProcessUtilTest::CountOpenFDsInChild() {
int fds[2];
if (pipe(fds) < 0)
NOTREACHED();
base::FileHandleMappingVector fd_mapping_vec;
fd_mapping_vec.push_back(std::pair<int, int>(fds[1], kChildPipe));
base::ProcessHandle handle = this->SpawnChild(
"ProcessUtilsLeakFDChildProcess", fd_mapping_vec, false);
CHECK(handle);
int ret = HANDLE_EINTR(close(fds[1]));
DPCHECK(ret == 0);
// Read number of open files in client process from pipe;
int num_open_files = -1;
ssize_t bytes_read =
HANDLE_EINTR(read(fds[0], &num_open_files, sizeof(num_open_files)));
CHECK_EQ(bytes_read, static_cast<ssize_t>(sizeof(num_open_files)));
#if defined(THREAD_SANITIZER) || defined(USE_HEAPCHECKER)
// Compiler-based ThreadSanitizer makes this test slow.
CHECK(base::WaitForSingleProcess(handle, base::TimeDelta::FromSeconds(3)));
#else
CHECK(base::WaitForSingleProcess(handle, base::TimeDelta::FromSeconds(1)));
#endif
base::CloseProcessHandle(handle);
ret = HANDLE_EINTR(close(fds[0]));
DPCHECK(ret == 0);
return num_open_files;
}
#if defined(ADDRESS_SANITIZER) || defined(THREAD_SANITIZER)
// ProcessUtilTest.FDRemapping is flaky when ran under xvfb-run on Precise.
// The problem is 100% reproducible with both ASan and TSan.
// See http://crbug.com/136720.
#define MAYBE_FDRemapping DISABLED_FDRemapping
#else
#define MAYBE_FDRemapping FDRemapping
#endif
TEST_F(ProcessUtilTest, MAYBE_FDRemapping) {
int fds_before = CountOpenFDsInChild();
// open some dummy fds to make sure they don't propagate over to the
// child process.
int dev_null = open("/dev/null", O_RDONLY);
int sockets[2];
socketpair(AF_UNIX, SOCK_STREAM, 0, sockets);
int fds_after = CountOpenFDsInChild();
ASSERT_EQ(fds_after, fds_before);
int ret;
ret = HANDLE_EINTR(close(sockets[0]));
DPCHECK(ret == 0);
ret = HANDLE_EINTR(close(sockets[1]));
DPCHECK(ret == 0);
ret = HANDLE_EINTR(close(dev_null));
DPCHECK(ret == 0);
}
namespace {
std::string TestLaunchProcess(const base::EnvironmentVector& env_changes,
const int clone_flags) {
std::vector<std::string> args;
base::FileHandleMappingVector fds_to_remap;
args.push_back(kPosixShell);
args.push_back("-c");
args.push_back("echo $BASE_TEST");
int fds[2];
PCHECK(pipe(fds) == 0);
fds_to_remap.push_back(std::make_pair(fds[1], 1));
base::LaunchOptions options;
options.wait = true;
options.environ = &env_changes;
options.fds_to_remap = &fds_to_remap;
#if defined(OS_LINUX)
options.clone_flags = clone_flags;
#else
CHECK_EQ(0, clone_flags);
#endif // OS_LINUX
EXPECT_TRUE(base::LaunchProcess(args, options, NULL));
PCHECK(HANDLE_EINTR(close(fds[1])) == 0);
char buf[512];
const ssize_t n = HANDLE_EINTR(read(fds[0], buf, sizeof(buf)));
PCHECK(n > 0);
PCHECK(HANDLE_EINTR(close(fds[0])) == 0);
return std::string(buf, n);
}
const char kLargeString[] =
"0123456789012345678901234567890123456789012345678901234567890123456789"
"0123456789012345678901234567890123456789012345678901234567890123456789"
"0123456789012345678901234567890123456789012345678901234567890123456789"
"0123456789012345678901234567890123456789012345678901234567890123456789"
"0123456789012345678901234567890123456789012345678901234567890123456789"
"0123456789012345678901234567890123456789012345678901234567890123456789"
"0123456789012345678901234567890123456789012345678901234567890123456789";
} // namespace
TEST_F(ProcessUtilTest, LaunchProcess) {
base::EnvironmentVector env_changes;
const int no_clone_flags = 0;
env_changes.push_back(std::make_pair(std::string("BASE_TEST"),
std::string("bar")));
EXPECT_EQ("bar\n", TestLaunchProcess(env_changes, no_clone_flags));
env_changes.clear();
EXPECT_EQ(0, setenv("BASE_TEST", "testing", 1 /* override */));
EXPECT_EQ("testing\n", TestLaunchProcess(env_changes, no_clone_flags));
env_changes.push_back(
std::make_pair(std::string("BASE_TEST"), std::string()));
EXPECT_EQ("\n", TestLaunchProcess(env_changes, no_clone_flags));
env_changes[0].second = "foo";
EXPECT_EQ("foo\n", TestLaunchProcess(env_changes, no_clone_flags));
env_changes.clear();
EXPECT_EQ(0, setenv("BASE_TEST", kLargeString, 1 /* override */));
EXPECT_EQ(std::string(kLargeString) + "\n",
TestLaunchProcess(env_changes, no_clone_flags));
env_changes.push_back(std::make_pair(std::string("BASE_TEST"),
std::string("wibble")));
EXPECT_EQ("wibble\n", TestLaunchProcess(env_changes, no_clone_flags));
#if defined(OS_LINUX)
// Test a non-trival value for clone_flags.
// Don't test on Valgrind as it has limited support for clone().
if (!RunningOnValgrind()) {
EXPECT_EQ("wibble\n", TestLaunchProcess(env_changes, CLONE_FS | SIGCHLD));
}
#endif
}
TEST_F(ProcessUtilTest, AlterEnvironment) {
const char* const empty[] = { NULL };
const char* const a2[] = { "A=2", NULL };
base::EnvironmentVector changes;
char** e;
e = base::AlterEnvironment(changes, empty);
EXPECT_TRUE(e[0] == NULL);
delete[] e;
changes.push_back(std::make_pair(std::string("A"), std::string("1")));
e = base::AlterEnvironment(changes, empty);
EXPECT_EQ(std::string("A=1"), e[0]);
EXPECT_TRUE(e[1] == NULL);
delete[] e;
changes.clear();
changes.push_back(std::make_pair(std::string("A"), std::string()));
e = base::AlterEnvironment(changes, empty);
EXPECT_TRUE(e[0] == NULL);
delete[] e;
changes.clear();
e = base::AlterEnvironment(changes, a2);
EXPECT_EQ(std::string("A=2"), e[0]);
EXPECT_TRUE(e[1] == NULL);
delete[] e;
changes.clear();
changes.push_back(std::make_pair(std::string("A"), std::string("1")));
e = base::AlterEnvironment(changes, a2);
EXPECT_EQ(std::string("A=1"), e[0]);
EXPECT_TRUE(e[1] == NULL);
delete[] e;
changes.clear();
changes.push_back(std::make_pair(std::string("A"), std::string()));
e = base::AlterEnvironment(changes, a2);
EXPECT_TRUE(e[0] == NULL);
delete[] e;
}
TEST_F(ProcessUtilTest, GetAppOutput) {
std::string output;
#if defined(OS_ANDROID)
std::vector<std::string> argv;
argv.push_back("sh"); // Instead of /bin/sh, force path search to find it.
argv.push_back("-c");
argv.push_back("exit 0");
EXPECT_TRUE(base::GetAppOutput(CommandLine(argv), &output));
EXPECT_STREQ("", output.c_str());
argv[2] = "exit 1";
EXPECT_FALSE(base::GetAppOutput(CommandLine(argv), &output));
EXPECT_STREQ("", output.c_str());
argv[2] = "echo foobar42";
EXPECT_TRUE(base::GetAppOutput(CommandLine(argv), &output));
EXPECT_STREQ("foobar42\n", output.c_str());
#else
EXPECT_TRUE(base::GetAppOutput(CommandLine(FilePath("true")), &output));
EXPECT_STREQ("", output.c_str());
EXPECT_FALSE(base::GetAppOutput(CommandLine(FilePath("false")), &output));
std::vector<std::string> argv;
argv.push_back("/bin/echo");
argv.push_back("-n");
argv.push_back("foobar42");
EXPECT_TRUE(base::GetAppOutput(CommandLine(argv), &output));
EXPECT_STREQ("foobar42", output.c_str());
#endif // defined(OS_ANDROID)
}
TEST_F(ProcessUtilTest, GetAppOutputRestricted) {
// Unfortunately, since we can't rely on the path, we need to know where
// everything is. So let's use /bin/sh, which is on every POSIX system, and
// its built-ins.
std::vector<std::string> argv;
argv.push_back(std::string(kShellPath)); // argv[0]
argv.push_back("-c"); // argv[1]
// On success, should set |output|. We use |/bin/sh -c 'exit 0'| instead of
// |true| since the location of the latter may be |/bin| or |/usr/bin| (and we
// need absolute paths).
argv.push_back("exit 0"); // argv[2]; equivalent to "true"
std::string output = "abc";
EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 100));
EXPECT_STREQ("", output.c_str());
argv[2] = "exit 1"; // equivalent to "false"
output = "before";
EXPECT_FALSE(base::GetAppOutputRestricted(CommandLine(argv),
&output, 100));
EXPECT_STREQ("", output.c_str());
// Amount of output exactly equal to space allowed.
argv[2] = "echo 123456789"; // (the sh built-in doesn't take "-n")
output.clear();
EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 10));
EXPECT_STREQ("123456789\n", output.c_str());
// Amount of output greater than space allowed.
output.clear();
EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 5));
EXPECT_STREQ("12345", output.c_str());
// Amount of output less than space allowed.
output.clear();
EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 15));
EXPECT_STREQ("123456789\n", output.c_str());
// Zero space allowed.
output = "abc";
EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 0));
EXPECT_STREQ("", output.c_str());
}
#if !defined(OS_MACOSX) && !defined(OS_OPENBSD)
// TODO(benwells): GetAppOutputRestricted should terminate applications
// with SIGPIPE when we have enough output. http://crbug.com/88502
TEST_F(ProcessUtilTest, GetAppOutputRestrictedSIGPIPE) {
std::vector<std::string> argv;
std::string output;
argv.push_back(std::string(kShellPath)); // argv[0]
argv.push_back("-c");
#if defined(OS_ANDROID)
argv.push_back("while echo 12345678901234567890; do :; done");
EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 10));
EXPECT_STREQ("1234567890", output.c_str());
#else
argv.push_back("yes");
EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 10));
EXPECT_STREQ("y\ny\ny\ny\ny\n", output.c_str());
#endif
}
#endif
TEST_F(ProcessUtilTest, GetAppOutputRestrictedNoZombies) {
std::vector<std::string> argv;
argv.push_back(std::string(kShellPath)); // argv[0]
argv.push_back("-c"); // argv[1]
argv.push_back("echo 123456789012345678901234567890"); // argv[2]
// Run |GetAppOutputRestricted()| 300 (> default per-user processes on Mac OS
// 10.5) times with an output buffer big enough to capture all output.
for (int i = 0; i < 300; i++) {
std::string output;
EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 100));
EXPECT_STREQ("123456789012345678901234567890\n", output.c_str());
}
// Ditto, but with an output buffer too small to capture all output.
for (int i = 0; i < 300; i++) {
std::string output;
EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 10));
EXPECT_STREQ("1234567890", output.c_str());
}
}
TEST_F(ProcessUtilTest, GetAppOutputWithExitCode) {
// Test getting output from a successful application.
std::vector<std::string> argv;
std::string output;
int exit_code;
argv.push_back(std::string(kShellPath)); // argv[0]
argv.push_back("-c"); // argv[1]
argv.push_back("echo foo"); // argv[2];
EXPECT_TRUE(base::GetAppOutputWithExitCode(CommandLine(argv), &output,
&exit_code));
EXPECT_STREQ("foo\n", output.c_str());
EXPECT_EQ(exit_code, 0);
// Test getting output from an application which fails with a specific exit
// code.
output.clear();
argv[2] = "echo foo; exit 2";
EXPECT_TRUE(base::GetAppOutputWithExitCode(CommandLine(argv), &output,
&exit_code));
EXPECT_STREQ("foo\n", output.c_str());
EXPECT_EQ(exit_code, 2);
}
TEST_F(ProcessUtilTest, GetParentProcessId) {
base::ProcessId ppid = base::GetParentProcessId(base::GetCurrentProcId());
EXPECT_EQ(ppid, getppid());
}
#if defined(OS_LINUX) || defined(OS_ANDROID)
TEST_F(ProcessUtilTest, ParseProcStatCPU) {
// /proc/self/stat for a process running "top".
const char kTopStat[] = "960 (top) S 16230 960 16230 34818 960 "
"4202496 471 0 0 0 "
"12 16 0 0 " // <- These are the goods.
"20 0 1 0 121946157 15077376 314 18446744073709551615 4194304 "
"4246868 140733983044336 18446744073709551615 140244213071219 "
"0 0 0 138047495 0 0 0 17 1 0 0 0 0 0";
EXPECT_EQ(12 + 16, base::ParseProcStatCPU(kTopStat));
// cat /proc/self/stat on a random other machine I have.
const char kSelfStat[] = "5364 (cat) R 5354 5364 5354 34819 5364 "
"0 142 0 0 0 "
"0 0 0 0 " // <- No CPU, apparently.
"16 0 1 0 1676099790 2957312 114 4294967295 134512640 134528148 "
"3221224832 3221224344 3086339742 0 0 0 0 0 0 0 17 0 0 0";
EXPECT_EQ(0, base::ParseProcStatCPU(kSelfStat));
}
// Disable on Android because base_unittests runs inside a Dalvik VM that
// starts and stop threads (crbug.com/175563).
#if !defined(OS_ANDROID)
TEST_F(ProcessUtilTest, GetNumberOfThreads) {
const base::ProcessHandle current = base::GetCurrentProcessHandle();
const int initial_threads = base::GetNumberOfThreads(current);
ASSERT_GT(initial_threads, 0);
const int kNumAdditionalThreads = 10;
{
scoped_ptr<base::Thread> my_threads[kNumAdditionalThreads];
for (int i = 0; i < kNumAdditionalThreads; ++i) {
my_threads[i].reset(new base::Thread("GetNumberOfThreadsTest"));
my_threads[i]->Start();
ASSERT_EQ(base::GetNumberOfThreads(current), initial_threads + 1 + i);
}
}
// The Thread destructor will stop them.
ASSERT_EQ(initial_threads, base::GetNumberOfThreads(current));
}
#endif // !defined(OS_ANDROID)
#endif // defined(OS_LINUX) || defined(OS_ANDROID)
// TODO(port): port those unit tests.
bool IsProcessDead(base::ProcessHandle child) {
// waitpid() will actually reap the process which is exactly NOT what we
// want to test for. The good thing is that if it can't find the process
// we'll get a nice value for errno which we can test for.
const pid_t result = HANDLE_EINTR(waitpid(child, NULL, WNOHANG));
return result == -1 && errno == ECHILD;
}
TEST_F(ProcessUtilTest, DelayedTermination) {
base::ProcessHandle child_process =
SpawnChild("process_util_test_never_die", false);
ASSERT_TRUE(child_process);
base::EnsureProcessTerminated(child_process);
base::WaitForSingleProcess(child_process, base::TimeDelta::FromSeconds(5));
// Check that process was really killed.
EXPECT_TRUE(IsProcessDead(child_process));
base::CloseProcessHandle(child_process);
}
MULTIPROCESS_TEST_MAIN(process_util_test_never_die) {
while (1) {
sleep(500);
}
return 0;
}
TEST_F(ProcessUtilTest, ImmediateTermination) {
base::ProcessHandle child_process =
SpawnChild("process_util_test_die_immediately", false);
ASSERT_TRUE(child_process);
// Give it time to die.
sleep(2);
base::EnsureProcessTerminated(child_process);
// Check that process was really killed.
EXPECT_TRUE(IsProcessDead(child_process));
base::CloseProcessHandle(child_process);
}
MULTIPROCESS_TEST_MAIN(process_util_test_die_immediately) {
return 0;
}
#endif // defined(OS_POSIX)
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