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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #define _CRT_SECURE_NO_WARNINGS | |
6 | |
7 #include <limits> | |
8 | |
9 #include "base/command_line.h" | |
10 #include "base/debug/alias.h" | |
11 #include "base/debug/stack_trace.h" | |
12 #include "base/files/file_path.h" | |
13 #include "base/logging.h" | |
14 #include "base/memory/scoped_ptr.h" | |
15 #include "base/path_service.h" | |
16 #include "base/posix/eintr_wrapper.h" | |
17 #include "base/process_util.h" | |
18 #include "base/strings/utf_string_conversions.h" | |
19 #include "base/test/multiprocess_test.h" | |
20 #include "base/test/test_timeouts.h" | |
21 #include "base/third_party/dynamic_annotations/dynamic_annotations.h" | |
22 #include "base/threading/platform_thread.h" | |
23 #include "base/threading/thread.h" | |
24 #include "testing/gtest/include/gtest/gtest.h" | |
25 #include "testing/multiprocess_func_list.h" | |
26 | |
27 #if defined(OS_LINUX) | |
28 #include <glib.h> | |
29 #include <malloc.h> | |
30 #include <sched.h> | |
31 #endif | |
32 #if defined(OS_POSIX) | |
33 #include <dlfcn.h> | |
34 #include <errno.h> | |
35 #include <fcntl.h> | |
36 #include <signal.h> | |
37 #include <sys/resource.h> | |
38 #include <sys/socket.h> | |
39 #include <sys/wait.h> | |
40 #endif | |
41 #if defined(OS_WIN) | |
42 #include <windows.h> | |
43 #endif | |
44 #if defined(OS_MACOSX) | |
45 #include <mach/vm_param.h> | |
46 #include <malloc/malloc.h> | |
47 #endif | |
48 | |
49 using base::FilePath; | |
50 | |
51 namespace { | |
52 | |
53 #if defined(OS_WIN) | |
54 const wchar_t kProcessName[] = L"base_unittests.exe"; | |
55 #else | |
56 const wchar_t kProcessName[] = L"base_unittests"; | |
57 #endif // defined(OS_WIN) | |
58 | |
59 #if defined(OS_ANDROID) | |
60 const char kShellPath[] = "/system/bin/sh"; | |
61 const char kPosixShell[] = "sh"; | |
62 #else | |
63 const char kShellPath[] = "/bin/sh"; | |
64 const char kPosixShell[] = "bash"; | |
65 #endif | |
66 | |
67 const char kSignalFileSlow[] = "SlowChildProcess.die"; | |
68 const char kSignalFileCrash[] = "CrashingChildProcess.die"; | |
69 const char kSignalFileKill[] = "KilledChildProcess.die"; | |
70 | |
71 #if defined(OS_WIN) | |
72 const int kExpectedStillRunningExitCode = 0x102; | |
73 const int kExpectedKilledExitCode = 1; | |
74 #else | |
75 const int kExpectedStillRunningExitCode = 0; | |
76 #endif | |
77 | |
78 // Sleeps until file filename is created. | |
79 void WaitToDie(const char* filename) { | |
80 FILE* fp; | |
81 do { | |
82 base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(10)); | |
83 fp = fopen(filename, "r"); | |
84 } while (!fp); | |
85 fclose(fp); | |
86 } | |
87 | |
88 // Signals children they should die now. | |
89 void SignalChildren(const char* filename) { | |
90 FILE* fp = fopen(filename, "w"); | |
91 fclose(fp); | |
92 } | |
93 | |
94 // Using a pipe to the child to wait for an event was considered, but | |
95 // there were cases in the past where pipes caused problems (other | |
96 // libraries closing the fds, child deadlocking). This is a simple | |
97 // case, so it's not worth the risk. Using wait loops is discouraged | |
98 // in most instances. | |
99 base::TerminationStatus WaitForChildTermination(base::ProcessHandle handle, | |
100 int* exit_code) { | |
101 // Now we wait until the result is something other than STILL_RUNNING. | |
102 base::TerminationStatus status = base::TERMINATION_STATUS_STILL_RUNNING; | |
103 const base::TimeDelta kInterval = base::TimeDelta::FromMilliseconds(20); | |
104 base::TimeDelta waited; | |
105 do { | |
106 status = base::GetTerminationStatus(handle, exit_code); | |
107 base::PlatformThread::Sleep(kInterval); | |
108 waited += kInterval; | |
109 } while (status == base::TERMINATION_STATUS_STILL_RUNNING && | |
110 // Waiting for more time for process termination on android devices. | |
111 #if defined(OS_ANDROID) | |
112 waited < TestTimeouts::large_test_timeout()); | |
113 #else | |
114 waited < TestTimeouts::action_max_timeout()); | |
115 #endif | |
116 | |
117 return status; | |
118 } | |
119 | |
120 } // namespace | |
121 | |
122 class ProcessUtilTest : public base::MultiProcessTest { | |
123 public: | |
124 #if defined(OS_POSIX) | |
125 // Spawn a child process that counts how many file descriptors are open. | |
126 int CountOpenFDsInChild(); | |
127 #endif | |
128 // Converts the filename to a platform specific filepath. | |
129 // On Android files can not be created in arbitrary directories. | |
130 static std::string GetSignalFilePath(const char* filename); | |
131 }; | |
132 | |
133 std::string ProcessUtilTest::GetSignalFilePath(const char* filename) { | |
134 #if !defined(OS_ANDROID) | |
135 return filename; | |
136 #else | |
137 FilePath tmp_dir; | |
138 PathService::Get(base::DIR_CACHE, &tmp_dir); | |
139 tmp_dir = tmp_dir.Append(filename); | |
140 return tmp_dir.value(); | |
141 #endif | |
142 } | |
143 | |
144 MULTIPROCESS_TEST_MAIN(SimpleChildProcess) { | |
145 return 0; | |
146 } | |
147 | |
148 TEST_F(ProcessUtilTest, SpawnChild) { | |
149 base::ProcessHandle handle = this->SpawnChild("SimpleChildProcess", false); | |
150 ASSERT_NE(base::kNullProcessHandle, handle); | |
151 EXPECT_TRUE(base::WaitForSingleProcess( | |
152 handle, TestTimeouts::action_max_timeout())); | |
153 base::CloseProcessHandle(handle); | |
154 } | |
155 | |
156 MULTIPROCESS_TEST_MAIN(SlowChildProcess) { | |
157 WaitToDie(ProcessUtilTest::GetSignalFilePath(kSignalFileSlow).c_str()); | |
158 return 0; | |
159 } | |
160 | |
161 TEST_F(ProcessUtilTest, KillSlowChild) { | |
162 const std::string signal_file = | |
163 ProcessUtilTest::GetSignalFilePath(kSignalFileSlow); | |
164 remove(signal_file.c_str()); | |
165 base::ProcessHandle handle = this->SpawnChild("SlowChildProcess", false); | |
166 ASSERT_NE(base::kNullProcessHandle, handle); | |
167 SignalChildren(signal_file.c_str()); | |
168 EXPECT_TRUE(base::WaitForSingleProcess( | |
169 handle, TestTimeouts::action_max_timeout())); | |
170 base::CloseProcessHandle(handle); | |
171 remove(signal_file.c_str()); | |
172 } | |
173 | |
174 // Times out on Linux and Win, flakes on other platforms, http://crbug.com/95058 | |
175 TEST_F(ProcessUtilTest, DISABLED_GetTerminationStatusExit) { | |
176 const std::string signal_file = | |
177 ProcessUtilTest::GetSignalFilePath(kSignalFileSlow); | |
178 remove(signal_file.c_str()); | |
179 base::ProcessHandle handle = this->SpawnChild("SlowChildProcess", false); | |
180 ASSERT_NE(base::kNullProcessHandle, handle); | |
181 | |
182 int exit_code = 42; | |
183 EXPECT_EQ(base::TERMINATION_STATUS_STILL_RUNNING, | |
184 base::GetTerminationStatus(handle, &exit_code)); | |
185 EXPECT_EQ(kExpectedStillRunningExitCode, exit_code); | |
186 | |
187 SignalChildren(signal_file.c_str()); | |
188 exit_code = 42; | |
189 base::TerminationStatus status = | |
190 WaitForChildTermination(handle, &exit_code); | |
191 EXPECT_EQ(base::TERMINATION_STATUS_NORMAL_TERMINATION, status); | |
192 EXPECT_EQ(0, exit_code); | |
193 base::CloseProcessHandle(handle); | |
194 remove(signal_file.c_str()); | |
195 } | |
196 | |
197 #if defined(OS_WIN) | |
198 // TODO(cpu): figure out how to test this in other platforms. | |
199 TEST_F(ProcessUtilTest, GetProcId) { | |
200 base::ProcessId id1 = base::GetProcId(GetCurrentProcess()); | |
201 EXPECT_NE(0ul, id1); | |
202 base::ProcessHandle handle = this->SpawnChild("SimpleChildProcess", false); | |
203 ASSERT_NE(base::kNullProcessHandle, handle); | |
204 base::ProcessId id2 = base::GetProcId(handle); | |
205 EXPECT_NE(0ul, id2); | |
206 EXPECT_NE(id1, id2); | |
207 base::CloseProcessHandle(handle); | |
208 } | |
209 #endif | |
210 | |
211 #if !defined(OS_MACOSX) | |
212 // This test is disabled on Mac, since it's flaky due to ReportCrash | |
213 // taking a variable amount of time to parse and load the debug and | |
214 // symbol data for this unit test's executable before firing the | |
215 // signal handler. | |
216 // | |
217 // TODO(gspencer): turn this test process into a very small program | |
218 // with no symbols (instead of using the multiprocess testing | |
219 // framework) to reduce the ReportCrash overhead. | |
220 | |
221 MULTIPROCESS_TEST_MAIN(CrashingChildProcess) { | |
222 WaitToDie(ProcessUtilTest::GetSignalFilePath(kSignalFileCrash).c_str()); | |
223 #if defined(OS_POSIX) | |
224 // Have to disable to signal handler for segv so we can get a crash | |
225 // instead of an abnormal termination through the crash dump handler. | |
226 ::signal(SIGSEGV, SIG_DFL); | |
227 #endif | |
228 // Make this process have a segmentation fault. | |
229 volatile int* oops = NULL; | |
230 *oops = 0xDEAD; | |
231 return 1; | |
232 } | |
233 | |
234 // This test intentionally crashes, so we don't need to run it under | |
235 // AddressSanitizer. | |
236 // TODO(jschuh): crbug.com/175753 Fix this in Win64 bots. | |
237 #if defined(ADDRESS_SANITIZER) || (defined(OS_WIN) && defined(ARCH_CPU_X86_64)) | |
238 #define MAYBE_GetTerminationStatusCrash DISABLED_GetTerminationStatusCrash | |
239 #else | |
240 #define MAYBE_GetTerminationStatusCrash GetTerminationStatusCrash | |
241 #endif | |
242 TEST_F(ProcessUtilTest, MAYBE_GetTerminationStatusCrash) { | |
243 const std::string signal_file = | |
244 ProcessUtilTest::GetSignalFilePath(kSignalFileCrash); | |
245 remove(signal_file.c_str()); | |
246 base::ProcessHandle handle = this->SpawnChild("CrashingChildProcess", | |
247 false); | |
248 ASSERT_NE(base::kNullProcessHandle, handle); | |
249 | |
250 int exit_code = 42; | |
251 EXPECT_EQ(base::TERMINATION_STATUS_STILL_RUNNING, | |
252 base::GetTerminationStatus(handle, &exit_code)); | |
253 EXPECT_EQ(kExpectedStillRunningExitCode, exit_code); | |
254 | |
255 SignalChildren(signal_file.c_str()); | |
256 exit_code = 42; | |
257 base::TerminationStatus status = | |
258 WaitForChildTermination(handle, &exit_code); | |
259 EXPECT_EQ(base::TERMINATION_STATUS_PROCESS_CRASHED, status); | |
260 | |
261 #if defined(OS_WIN) | |
262 EXPECT_EQ(0xc0000005, exit_code); | |
263 #elif defined(OS_POSIX) | |
264 int signaled = WIFSIGNALED(exit_code); | |
265 EXPECT_NE(0, signaled); | |
266 int signal = WTERMSIG(exit_code); | |
267 EXPECT_EQ(SIGSEGV, signal); | |
268 #endif | |
269 base::CloseProcessHandle(handle); | |
270 | |
271 // Reset signal handlers back to "normal". | |
272 base::debug::EnableInProcessStackDumping(); | |
273 remove(signal_file.c_str()); | |
274 } | |
275 #endif // !defined(OS_MACOSX) | |
276 | |
277 MULTIPROCESS_TEST_MAIN(KilledChildProcess) { | |
278 WaitToDie(ProcessUtilTest::GetSignalFilePath(kSignalFileKill).c_str()); | |
279 #if defined(OS_WIN) | |
280 // Kill ourselves. | |
281 HANDLE handle = ::OpenProcess(PROCESS_ALL_ACCESS, 0, ::GetCurrentProcessId()); | |
282 ::TerminateProcess(handle, kExpectedKilledExitCode); | |
283 #elif defined(OS_POSIX) | |
284 // Send a SIGKILL to this process, just like the OOM killer would. | |
285 ::kill(getpid(), SIGKILL); | |
286 #endif | |
287 return 1; | |
288 } | |
289 | |
290 TEST_F(ProcessUtilTest, GetTerminationStatusKill) { | |
291 const std::string signal_file = | |
292 ProcessUtilTest::GetSignalFilePath(kSignalFileKill); | |
293 remove(signal_file.c_str()); | |
294 base::ProcessHandle handle = this->SpawnChild("KilledChildProcess", | |
295 false); | |
296 ASSERT_NE(base::kNullProcessHandle, handle); | |
297 | |
298 int exit_code = 42; | |
299 EXPECT_EQ(base::TERMINATION_STATUS_STILL_RUNNING, | |
300 base::GetTerminationStatus(handle, &exit_code)); | |
301 EXPECT_EQ(kExpectedStillRunningExitCode, exit_code); | |
302 | |
303 SignalChildren(signal_file.c_str()); | |
304 exit_code = 42; | |
305 base::TerminationStatus status = | |
306 WaitForChildTermination(handle, &exit_code); | |
307 EXPECT_EQ(base::TERMINATION_STATUS_PROCESS_WAS_KILLED, status); | |
308 #if defined(OS_WIN) | |
309 EXPECT_EQ(kExpectedKilledExitCode, exit_code); | |
310 #elif defined(OS_POSIX) | |
311 int signaled = WIFSIGNALED(exit_code); | |
312 EXPECT_NE(0, signaled); | |
313 int signal = WTERMSIG(exit_code); | |
314 EXPECT_EQ(SIGKILL, signal); | |
315 #endif | |
316 base::CloseProcessHandle(handle); | |
317 remove(signal_file.c_str()); | |
318 } | |
319 | |
320 // Ensure that the priority of a process is restored correctly after | |
321 // backgrounding and restoring. | |
322 // Note: a platform may not be willing or able to lower the priority of | |
323 // a process. The calls to SetProcessBackground should be noops then. | |
324 TEST_F(ProcessUtilTest, SetProcessBackgrounded) { | |
325 base::ProcessHandle handle = this->SpawnChild("SimpleChildProcess", false); | |
326 base::Process process(handle); | |
327 int old_priority = process.GetPriority(); | |
328 #if defined(OS_WIN) | |
329 EXPECT_TRUE(process.SetProcessBackgrounded(true)); | |
330 EXPECT_TRUE(process.IsProcessBackgrounded()); | |
331 EXPECT_TRUE(process.SetProcessBackgrounded(false)); | |
332 EXPECT_FALSE(process.IsProcessBackgrounded()); | |
333 #else | |
334 process.SetProcessBackgrounded(true); | |
335 process.SetProcessBackgrounded(false); | |
336 #endif | |
337 int new_priority = process.GetPriority(); | |
338 EXPECT_EQ(old_priority, new_priority); | |
339 } | |
340 | |
341 // Same as SetProcessBackgrounded but to this very process. It uses | |
342 // a different code path at least for Windows. | |
343 TEST_F(ProcessUtilTest, SetProcessBackgroundedSelf) { | |
344 base::Process process(base::Process::Current().handle()); | |
345 int old_priority = process.GetPriority(); | |
346 #if defined(OS_WIN) | |
347 EXPECT_TRUE(process.SetProcessBackgrounded(true)); | |
348 EXPECT_TRUE(process.IsProcessBackgrounded()); | |
349 EXPECT_TRUE(process.SetProcessBackgrounded(false)); | |
350 EXPECT_FALSE(process.IsProcessBackgrounded()); | |
351 #else | |
352 process.SetProcessBackgrounded(true); | |
353 process.SetProcessBackgrounded(false); | |
354 #endif | |
355 int new_priority = process.GetPriority(); | |
356 EXPECT_EQ(old_priority, new_priority); | |
357 } | |
358 | |
359 #if defined(OS_LINUX) || defined(OS_ANDROID) | |
360 TEST_F(ProcessUtilTest, GetSystemMemoryInfo) { | |
361 base::SystemMemoryInfoKB info; | |
362 EXPECT_TRUE(base::GetSystemMemoryInfo(&info)); | |
363 | |
364 // Ensure each field received a value. | |
365 EXPECT_GT(info.total, 0); | |
366 EXPECT_GT(info.free, 0); | |
367 EXPECT_GT(info.buffers, 0); | |
368 EXPECT_GT(info.cached, 0); | |
369 EXPECT_GT(info.active_anon, 0); | |
370 EXPECT_GT(info.inactive_anon, 0); | |
371 EXPECT_GT(info.active_file, 0); | |
372 EXPECT_GT(info.inactive_file, 0); | |
373 | |
374 // All the values should be less than the total amount of memory. | |
375 EXPECT_LT(info.free, info.total); | |
376 EXPECT_LT(info.buffers, info.total); | |
377 EXPECT_LT(info.cached, info.total); | |
378 EXPECT_LT(info.active_anon, info.total); | |
379 EXPECT_LT(info.inactive_anon, info.total); | |
380 EXPECT_LT(info.active_file, info.total); | |
381 EXPECT_LT(info.inactive_file, info.total); | |
382 | |
383 #if defined(OS_CHROMEOS) | |
384 // Chrome OS exposes shmem. | |
385 EXPECT_GT(info.shmem, 0); | |
386 EXPECT_LT(info.shmem, info.total); | |
387 // Chrome unit tests are not run on actual Chrome OS hardware, so gem_objects | |
388 // and gem_size cannot be tested here. | |
389 #endif | |
390 } | |
391 #endif // defined(OS_LINUX) || defined(OS_ANDROID) | |
392 | |
393 // TODO(estade): if possible, port these 2 tests. | |
394 #if defined(OS_WIN) | |
395 TEST_F(ProcessUtilTest, CalcFreeMemory) { | |
396 scoped_ptr<base::ProcessMetrics> metrics( | |
397 base::ProcessMetrics::CreateProcessMetrics(::GetCurrentProcess())); | |
398 ASSERT_TRUE(NULL != metrics.get()); | |
399 | |
400 bool using_tcmalloc = false; | |
401 | |
402 // Detect if we are using tcmalloc | |
403 #if !defined(NO_TCMALLOC) | |
404 const char* chrome_allocator = getenv("CHROME_ALLOCATOR"); | |
405 if (!chrome_allocator || _stricmp(chrome_allocator, "tcmalloc") == 0) | |
406 using_tcmalloc = true; | |
407 #endif | |
408 | |
409 // Typical values here is ~1900 for total and ~1000 for largest. Obviously | |
410 // it depends in what other tests have done to this process. | |
411 base::FreeMBytes free_mem1 = {0}; | |
412 EXPECT_TRUE(metrics->CalculateFreeMemory(&free_mem1)); | |
413 EXPECT_LT(10u, free_mem1.total); | |
414 EXPECT_LT(10u, free_mem1.largest); | |
415 EXPECT_GT(2048u, free_mem1.total); | |
416 EXPECT_GT(2048u, free_mem1.largest); | |
417 EXPECT_GE(free_mem1.total, free_mem1.largest); | |
418 EXPECT_TRUE(NULL != free_mem1.largest_ptr); | |
419 | |
420 // Allocate 20M and check again. It should have gone down. | |
421 const int kAllocMB = 20; | |
422 scoped_ptr<char[]> alloc(new char[kAllocMB * 1024 * 1024]); | |
423 size_t expected_total = free_mem1.total - kAllocMB; | |
424 size_t expected_largest = free_mem1.largest; | |
425 | |
426 base::FreeMBytes free_mem2 = {0}; | |
427 EXPECT_TRUE(metrics->CalculateFreeMemory(&free_mem2)); | |
428 EXPECT_GE(free_mem2.total, free_mem2.largest); | |
429 // This test is flaky when using tcmalloc, because tcmalloc | |
430 // allocation strategy sometimes results in less than the | |
431 // full drop of 20Mb of free memory. | |
432 if (!using_tcmalloc) | |
433 EXPECT_GE(expected_total, free_mem2.total); | |
434 EXPECT_GE(expected_largest, free_mem2.largest); | |
435 EXPECT_TRUE(NULL != free_mem2.largest_ptr); | |
436 } | |
437 | |
438 TEST_F(ProcessUtilTest, GetAppOutput) { | |
439 // Let's create a decently long message. | |
440 std::string message; | |
441 for (int i = 0; i < 1025; i++) { // 1025 so it does not end on a kilo-byte | |
442 // boundary. | |
443 message += "Hello!"; | |
444 } | |
445 // cmd.exe's echo always adds a \r\n to its output. | |
446 std::string expected(message); | |
447 expected += "\r\n"; | |
448 | |
449 FilePath cmd(L"cmd.exe"); | |
450 CommandLine cmd_line(cmd); | |
451 cmd_line.AppendArg("/c"); | |
452 cmd_line.AppendArg("echo " + message + ""); | |
453 std::string output; | |
454 ASSERT_TRUE(base::GetAppOutput(cmd_line, &output)); | |
455 EXPECT_EQ(expected, output); | |
456 | |
457 // Let's make sure stderr is ignored. | |
458 CommandLine other_cmd_line(cmd); | |
459 other_cmd_line.AppendArg("/c"); | |
460 // http://msdn.microsoft.com/library/cc772622.aspx | |
461 cmd_line.AppendArg("echo " + message + " >&2"); | |
462 output.clear(); | |
463 ASSERT_TRUE(base::GetAppOutput(other_cmd_line, &output)); | |
464 EXPECT_EQ("", output); | |
465 } | |
466 | |
467 TEST_F(ProcessUtilTest, LaunchAsUser) { | |
468 base::UserTokenHandle token; | |
469 ASSERT_TRUE(OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &token)); | |
470 std::wstring cmdline = | |
471 this->MakeCmdLine("SimpleChildProcess", false).GetCommandLineString(); | |
472 base::LaunchOptions options; | |
473 options.as_user = token; | |
474 EXPECT_TRUE(base::LaunchProcess(cmdline, options, NULL)); | |
475 } | |
476 | |
477 #endif // defined(OS_WIN) | |
478 | |
479 #if defined(OS_POSIX) | |
480 | |
481 namespace { | |
482 | |
483 // Returns the maximum number of files that a process can have open. | |
484 // Returns 0 on error. | |
485 int GetMaxFilesOpenInProcess() { | |
486 struct rlimit rlim; | |
487 if (getrlimit(RLIMIT_NOFILE, &rlim) != 0) { | |
488 return 0; | |
489 } | |
490 | |
491 // rlim_t is a uint64 - clip to maxint. We do this since FD #s are ints | |
492 // which are all 32 bits on the supported platforms. | |
493 rlim_t max_int = static_cast<rlim_t>(std::numeric_limits<int32>::max()); | |
494 if (rlim.rlim_cur > max_int) { | |
495 return max_int; | |
496 } | |
497 | |
498 return rlim.rlim_cur; | |
499 } | |
500 | |
501 const int kChildPipe = 20; // FD # for write end of pipe in child process. | |
502 | |
503 } // namespace | |
504 | |
505 MULTIPROCESS_TEST_MAIN(ProcessUtilsLeakFDChildProcess) { | |
506 // This child process counts the number of open FDs, it then writes that | |
507 // number out to a pipe connected to the parent. | |
508 int num_open_files = 0; | |
509 int write_pipe = kChildPipe; | |
510 int max_files = GetMaxFilesOpenInProcess(); | |
511 for (int i = STDERR_FILENO + 1; i < max_files; i++) { | |
512 if (i != kChildPipe) { | |
513 int fd; | |
514 if ((fd = HANDLE_EINTR(dup(i))) != -1) { | |
515 close(fd); | |
516 num_open_files += 1; | |
517 } | |
518 } | |
519 } | |
520 | |
521 int written = HANDLE_EINTR(write(write_pipe, &num_open_files, | |
522 sizeof(num_open_files))); | |
523 DCHECK_EQ(static_cast<size_t>(written), sizeof(num_open_files)); | |
524 int ret = HANDLE_EINTR(close(write_pipe)); | |
525 DPCHECK(ret == 0); | |
526 | |
527 return 0; | |
528 } | |
529 | |
530 int ProcessUtilTest::CountOpenFDsInChild() { | |
531 int fds[2]; | |
532 if (pipe(fds) < 0) | |
533 NOTREACHED(); | |
534 | |
535 base::FileHandleMappingVector fd_mapping_vec; | |
536 fd_mapping_vec.push_back(std::pair<int, int>(fds[1], kChildPipe)); | |
537 base::ProcessHandle handle = this->SpawnChild( | |
538 "ProcessUtilsLeakFDChildProcess", fd_mapping_vec, false); | |
539 CHECK(handle); | |
540 int ret = HANDLE_EINTR(close(fds[1])); | |
541 DPCHECK(ret == 0); | |
542 | |
543 // Read number of open files in client process from pipe; | |
544 int num_open_files = -1; | |
545 ssize_t bytes_read = | |
546 HANDLE_EINTR(read(fds[0], &num_open_files, sizeof(num_open_files))); | |
547 CHECK_EQ(bytes_read, static_cast<ssize_t>(sizeof(num_open_files))); | |
548 | |
549 #if defined(THREAD_SANITIZER) || defined(USE_HEAPCHECKER) | |
550 // Compiler-based ThreadSanitizer makes this test slow. | |
551 CHECK(base::WaitForSingleProcess(handle, base::TimeDelta::FromSeconds(3))); | |
552 #else | |
553 CHECK(base::WaitForSingleProcess(handle, base::TimeDelta::FromSeconds(1))); | |
554 #endif | |
555 base::CloseProcessHandle(handle); | |
556 ret = HANDLE_EINTR(close(fds[0])); | |
557 DPCHECK(ret == 0); | |
558 | |
559 return num_open_files; | |
560 } | |
561 | |
562 #if defined(ADDRESS_SANITIZER) || defined(THREAD_SANITIZER) | |
563 // ProcessUtilTest.FDRemapping is flaky when ran under xvfb-run on Precise. | |
564 // The problem is 100% reproducible with both ASan and TSan. | |
565 // See http://crbug.com/136720. | |
566 #define MAYBE_FDRemapping DISABLED_FDRemapping | |
567 #else | |
568 #define MAYBE_FDRemapping FDRemapping | |
569 #endif | |
570 TEST_F(ProcessUtilTest, MAYBE_FDRemapping) { | |
571 int fds_before = CountOpenFDsInChild(); | |
572 | |
573 // open some dummy fds to make sure they don't propagate over to the | |
574 // child process. | |
575 int dev_null = open("/dev/null", O_RDONLY); | |
576 int sockets[2]; | |
577 socketpair(AF_UNIX, SOCK_STREAM, 0, sockets); | |
578 | |
579 int fds_after = CountOpenFDsInChild(); | |
580 | |
581 ASSERT_EQ(fds_after, fds_before); | |
582 | |
583 int ret; | |
584 ret = HANDLE_EINTR(close(sockets[0])); | |
585 DPCHECK(ret == 0); | |
586 ret = HANDLE_EINTR(close(sockets[1])); | |
587 DPCHECK(ret == 0); | |
588 ret = HANDLE_EINTR(close(dev_null)); | |
589 DPCHECK(ret == 0); | |
590 } | |
591 | |
592 namespace { | |
593 | |
594 std::string TestLaunchProcess(const base::EnvironmentVector& env_changes, | |
595 const int clone_flags) { | |
596 std::vector<std::string> args; | |
597 base::FileHandleMappingVector fds_to_remap; | |
598 | |
599 args.push_back(kPosixShell); | |
600 args.push_back("-c"); | |
601 args.push_back("echo $BASE_TEST"); | |
602 | |
603 int fds[2]; | |
604 PCHECK(pipe(fds) == 0); | |
605 | |
606 fds_to_remap.push_back(std::make_pair(fds[1], 1)); | |
607 base::LaunchOptions options; | |
608 options.wait = true; | |
609 options.environ = &env_changes; | |
610 options.fds_to_remap = &fds_to_remap; | |
611 #if defined(OS_LINUX) | |
612 options.clone_flags = clone_flags; | |
613 #else | |
614 CHECK_EQ(0, clone_flags); | |
615 #endif // OS_LINUX | |
616 EXPECT_TRUE(base::LaunchProcess(args, options, NULL)); | |
617 PCHECK(HANDLE_EINTR(close(fds[1])) == 0); | |
618 | |
619 char buf[512]; | |
620 const ssize_t n = HANDLE_EINTR(read(fds[0], buf, sizeof(buf))); | |
621 PCHECK(n > 0); | |
622 | |
623 PCHECK(HANDLE_EINTR(close(fds[0])) == 0); | |
624 | |
625 return std::string(buf, n); | |
626 } | |
627 | |
628 const char kLargeString[] = | |
629 "0123456789012345678901234567890123456789012345678901234567890123456789" | |
630 "0123456789012345678901234567890123456789012345678901234567890123456789" | |
631 "0123456789012345678901234567890123456789012345678901234567890123456789" | |
632 "0123456789012345678901234567890123456789012345678901234567890123456789" | |
633 "0123456789012345678901234567890123456789012345678901234567890123456789" | |
634 "0123456789012345678901234567890123456789012345678901234567890123456789" | |
635 "0123456789012345678901234567890123456789012345678901234567890123456789"; | |
636 | |
637 } // namespace | |
638 | |
639 TEST_F(ProcessUtilTest, LaunchProcess) { | |
640 base::EnvironmentVector env_changes; | |
641 const int no_clone_flags = 0; | |
642 | |
643 env_changes.push_back(std::make_pair(std::string("BASE_TEST"), | |
644 std::string("bar"))); | |
645 EXPECT_EQ("bar\n", TestLaunchProcess(env_changes, no_clone_flags)); | |
646 env_changes.clear(); | |
647 | |
648 EXPECT_EQ(0, setenv("BASE_TEST", "testing", 1 /* override */)); | |
649 EXPECT_EQ("testing\n", TestLaunchProcess(env_changes, no_clone_flags)); | |
650 | |
651 env_changes.push_back( | |
652 std::make_pair(std::string("BASE_TEST"), std::string())); | |
653 EXPECT_EQ("\n", TestLaunchProcess(env_changes, no_clone_flags)); | |
654 | |
655 env_changes[0].second = "foo"; | |
656 EXPECT_EQ("foo\n", TestLaunchProcess(env_changes, no_clone_flags)); | |
657 | |
658 env_changes.clear(); | |
659 EXPECT_EQ(0, setenv("BASE_TEST", kLargeString, 1 /* override */)); | |
660 EXPECT_EQ(std::string(kLargeString) + "\n", | |
661 TestLaunchProcess(env_changes, no_clone_flags)); | |
662 | |
663 env_changes.push_back(std::make_pair(std::string("BASE_TEST"), | |
664 std::string("wibble"))); | |
665 EXPECT_EQ("wibble\n", TestLaunchProcess(env_changes, no_clone_flags)); | |
666 | |
667 #if defined(OS_LINUX) | |
668 // Test a non-trival value for clone_flags. | |
669 // Don't test on Valgrind as it has limited support for clone(). | |
670 if (!RunningOnValgrind()) { | |
671 EXPECT_EQ("wibble\n", TestLaunchProcess(env_changes, CLONE_FS | SIGCHLD)); | |
672 } | |
673 #endif | |
674 } | |
675 | |
676 TEST_F(ProcessUtilTest, AlterEnvironment) { | |
677 const char* const empty[] = { NULL }; | |
678 const char* const a2[] = { "A=2", NULL }; | |
679 base::EnvironmentVector changes; | |
680 char** e; | |
681 | |
682 e = base::AlterEnvironment(changes, empty); | |
683 EXPECT_TRUE(e[0] == NULL); | |
684 delete[] e; | |
685 | |
686 changes.push_back(std::make_pair(std::string("A"), std::string("1"))); | |
687 e = base::AlterEnvironment(changes, empty); | |
688 EXPECT_EQ(std::string("A=1"), e[0]); | |
689 EXPECT_TRUE(e[1] == NULL); | |
690 delete[] e; | |
691 | |
692 changes.clear(); | |
693 changes.push_back(std::make_pair(std::string("A"), std::string())); | |
694 e = base::AlterEnvironment(changes, empty); | |
695 EXPECT_TRUE(e[0] == NULL); | |
696 delete[] e; | |
697 | |
698 changes.clear(); | |
699 e = base::AlterEnvironment(changes, a2); | |
700 EXPECT_EQ(std::string("A=2"), e[0]); | |
701 EXPECT_TRUE(e[1] == NULL); | |
702 delete[] e; | |
703 | |
704 changes.clear(); | |
705 changes.push_back(std::make_pair(std::string("A"), std::string("1"))); | |
706 e = base::AlterEnvironment(changes, a2); | |
707 EXPECT_EQ(std::string("A=1"), e[0]); | |
708 EXPECT_TRUE(e[1] == NULL); | |
709 delete[] e; | |
710 | |
711 changes.clear(); | |
712 changes.push_back(std::make_pair(std::string("A"), std::string())); | |
713 e = base::AlterEnvironment(changes, a2); | |
714 EXPECT_TRUE(e[0] == NULL); | |
715 delete[] e; | |
716 } | |
717 | |
718 TEST_F(ProcessUtilTest, GetAppOutput) { | |
719 std::string output; | |
720 | |
721 #if defined(OS_ANDROID) | |
722 std::vector<std::string> argv; | |
723 argv.push_back("sh"); // Instead of /bin/sh, force path search to find it. | |
724 argv.push_back("-c"); | |
725 | |
726 argv.push_back("exit 0"); | |
727 EXPECT_TRUE(base::GetAppOutput(CommandLine(argv), &output)); | |
728 EXPECT_STREQ("", output.c_str()); | |
729 | |
730 argv[2] = "exit 1"; | |
731 EXPECT_FALSE(base::GetAppOutput(CommandLine(argv), &output)); | |
732 EXPECT_STREQ("", output.c_str()); | |
733 | |
734 argv[2] = "echo foobar42"; | |
735 EXPECT_TRUE(base::GetAppOutput(CommandLine(argv), &output)); | |
736 EXPECT_STREQ("foobar42\n", output.c_str()); | |
737 #else | |
738 EXPECT_TRUE(base::GetAppOutput(CommandLine(FilePath("true")), &output)); | |
739 EXPECT_STREQ("", output.c_str()); | |
740 | |
741 EXPECT_FALSE(base::GetAppOutput(CommandLine(FilePath("false")), &output)); | |
742 | |
743 std::vector<std::string> argv; | |
744 argv.push_back("/bin/echo"); | |
745 argv.push_back("-n"); | |
746 argv.push_back("foobar42"); | |
747 EXPECT_TRUE(base::GetAppOutput(CommandLine(argv), &output)); | |
748 EXPECT_STREQ("foobar42", output.c_str()); | |
749 #endif // defined(OS_ANDROID) | |
750 } | |
751 | |
752 TEST_F(ProcessUtilTest, GetAppOutputRestricted) { | |
753 // Unfortunately, since we can't rely on the path, we need to know where | |
754 // everything is. So let's use /bin/sh, which is on every POSIX system, and | |
755 // its built-ins. | |
756 std::vector<std::string> argv; | |
757 argv.push_back(std::string(kShellPath)); // argv[0] | |
758 argv.push_back("-c"); // argv[1] | |
759 | |
760 // On success, should set |output|. We use |/bin/sh -c 'exit 0'| instead of | |
761 // |true| since the location of the latter may be |/bin| or |/usr/bin| (and we | |
762 // need absolute paths). | |
763 argv.push_back("exit 0"); // argv[2]; equivalent to "true" | |
764 std::string output = "abc"; | |
765 EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 100)); | |
766 EXPECT_STREQ("", output.c_str()); | |
767 | |
768 argv[2] = "exit 1"; // equivalent to "false" | |
769 output = "before"; | |
770 EXPECT_FALSE(base::GetAppOutputRestricted(CommandLine(argv), | |
771 &output, 100)); | |
772 EXPECT_STREQ("", output.c_str()); | |
773 | |
774 // Amount of output exactly equal to space allowed. | |
775 argv[2] = "echo 123456789"; // (the sh built-in doesn't take "-n") | |
776 output.clear(); | |
777 EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 10)); | |
778 EXPECT_STREQ("123456789\n", output.c_str()); | |
779 | |
780 // Amount of output greater than space allowed. | |
781 output.clear(); | |
782 EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 5)); | |
783 EXPECT_STREQ("12345", output.c_str()); | |
784 | |
785 // Amount of output less than space allowed. | |
786 output.clear(); | |
787 EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 15)); | |
788 EXPECT_STREQ("123456789\n", output.c_str()); | |
789 | |
790 // Zero space allowed. | |
791 output = "abc"; | |
792 EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 0)); | |
793 EXPECT_STREQ("", output.c_str()); | |
794 } | |
795 | |
796 #if !defined(OS_MACOSX) && !defined(OS_OPENBSD) | |
797 // TODO(benwells): GetAppOutputRestricted should terminate applications | |
798 // with SIGPIPE when we have enough output. http://crbug.com/88502 | |
799 TEST_F(ProcessUtilTest, GetAppOutputRestrictedSIGPIPE) { | |
800 std::vector<std::string> argv; | |
801 std::string output; | |
802 | |
803 argv.push_back(std::string(kShellPath)); // argv[0] | |
804 argv.push_back("-c"); | |
805 #if defined(OS_ANDROID) | |
806 argv.push_back("while echo 12345678901234567890; do :; done"); | |
807 EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 10)); | |
808 EXPECT_STREQ("1234567890", output.c_str()); | |
809 #else | |
810 argv.push_back("yes"); | |
811 EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 10)); | |
812 EXPECT_STREQ("y\ny\ny\ny\ny\n", output.c_str()); | |
813 #endif | |
814 } | |
815 #endif | |
816 | |
817 TEST_F(ProcessUtilTest, GetAppOutputRestrictedNoZombies) { | |
818 std::vector<std::string> argv; | |
819 | |
820 argv.push_back(std::string(kShellPath)); // argv[0] | |
821 argv.push_back("-c"); // argv[1] | |
822 argv.push_back("echo 123456789012345678901234567890"); // argv[2] | |
823 | |
824 // Run |GetAppOutputRestricted()| 300 (> default per-user processes on Mac OS | |
825 // 10.5) times with an output buffer big enough to capture all output. | |
826 for (int i = 0; i < 300; i++) { | |
827 std::string output; | |
828 EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 100)); | |
829 EXPECT_STREQ("123456789012345678901234567890\n", output.c_str()); | |
830 } | |
831 | |
832 // Ditto, but with an output buffer too small to capture all output. | |
833 for (int i = 0; i < 300; i++) { | |
834 std::string output; | |
835 EXPECT_TRUE(base::GetAppOutputRestricted(CommandLine(argv), &output, 10)); | |
836 EXPECT_STREQ("1234567890", output.c_str()); | |
837 } | |
838 } | |
839 | |
840 TEST_F(ProcessUtilTest, GetAppOutputWithExitCode) { | |
841 // Test getting output from a successful application. | |
842 std::vector<std::string> argv; | |
843 std::string output; | |
844 int exit_code; | |
845 argv.push_back(std::string(kShellPath)); // argv[0] | |
846 argv.push_back("-c"); // argv[1] | |
847 argv.push_back("echo foo"); // argv[2]; | |
848 EXPECT_TRUE(base::GetAppOutputWithExitCode(CommandLine(argv), &output, | |
849 &exit_code)); | |
850 EXPECT_STREQ("foo\n", output.c_str()); | |
851 EXPECT_EQ(exit_code, 0); | |
852 | |
853 // Test getting output from an application which fails with a specific exit | |
854 // code. | |
855 output.clear(); | |
856 argv[2] = "echo foo; exit 2"; | |
857 EXPECT_TRUE(base::GetAppOutputWithExitCode(CommandLine(argv), &output, | |
858 &exit_code)); | |
859 EXPECT_STREQ("foo\n", output.c_str()); | |
860 EXPECT_EQ(exit_code, 2); | |
861 } | |
862 | |
863 TEST_F(ProcessUtilTest, GetParentProcessId) { | |
864 base::ProcessId ppid = base::GetParentProcessId(base::GetCurrentProcId()); | |
865 EXPECT_EQ(ppid, getppid()); | |
866 } | |
867 | |
868 #if defined(OS_LINUX) || defined(OS_ANDROID) | |
869 TEST_F(ProcessUtilTest, ParseProcStatCPU) { | |
870 // /proc/self/stat for a process running "top". | |
871 const char kTopStat[] = "960 (top) S 16230 960 16230 34818 960 " | |
872 "4202496 471 0 0 0 " | |
873 "12 16 0 0 " // <- These are the goods. | |
874 "20 0 1 0 121946157 15077376 314 18446744073709551615 4194304 " | |
875 "4246868 140733983044336 18446744073709551615 140244213071219 " | |
876 "0 0 0 138047495 0 0 0 17 1 0 0 0 0 0"; | |
877 EXPECT_EQ(12 + 16, base::ParseProcStatCPU(kTopStat)); | |
878 | |
879 // cat /proc/self/stat on a random other machine I have. | |
880 const char kSelfStat[] = "5364 (cat) R 5354 5364 5354 34819 5364 " | |
881 "0 142 0 0 0 " | |
882 "0 0 0 0 " // <- No CPU, apparently. | |
883 "16 0 1 0 1676099790 2957312 114 4294967295 134512640 134528148 " | |
884 "3221224832 3221224344 3086339742 0 0 0 0 0 0 0 17 0 0 0"; | |
885 | |
886 EXPECT_EQ(0, base::ParseProcStatCPU(kSelfStat)); | |
887 } | |
888 | |
889 // Disable on Android because base_unittests runs inside a Dalvik VM that | |
890 // starts and stop threads (crbug.com/175563). | |
891 #if !defined(OS_ANDROID) | |
892 TEST_F(ProcessUtilTest, GetNumberOfThreads) { | |
893 const base::ProcessHandle current = base::GetCurrentProcessHandle(); | |
894 const int initial_threads = base::GetNumberOfThreads(current); | |
895 ASSERT_GT(initial_threads, 0); | |
896 const int kNumAdditionalThreads = 10; | |
897 { | |
898 scoped_ptr<base::Thread> my_threads[kNumAdditionalThreads]; | |
899 for (int i = 0; i < kNumAdditionalThreads; ++i) { | |
900 my_threads[i].reset(new base::Thread("GetNumberOfThreadsTest")); | |
901 my_threads[i]->Start(); | |
902 ASSERT_EQ(base::GetNumberOfThreads(current), initial_threads + 1 + i); | |
903 } | |
904 } | |
905 // The Thread destructor will stop them. | |
906 ASSERT_EQ(initial_threads, base::GetNumberOfThreads(current)); | |
907 } | |
908 #endif // !defined(OS_ANDROID) | |
909 | |
910 #endif // defined(OS_LINUX) || defined(OS_ANDROID) | |
911 | |
912 // TODO(port): port those unit tests. | |
913 bool IsProcessDead(base::ProcessHandle child) { | |
914 // waitpid() will actually reap the process which is exactly NOT what we | |
915 // want to test for. The good thing is that if it can't find the process | |
916 // we'll get a nice value for errno which we can test for. | |
917 const pid_t result = HANDLE_EINTR(waitpid(child, NULL, WNOHANG)); | |
918 return result == -1 && errno == ECHILD; | |
919 } | |
920 | |
921 TEST_F(ProcessUtilTest, DelayedTermination) { | |
922 base::ProcessHandle child_process = | |
923 SpawnChild("process_util_test_never_die", false); | |
924 ASSERT_TRUE(child_process); | |
925 base::EnsureProcessTerminated(child_process); | |
926 base::WaitForSingleProcess(child_process, base::TimeDelta::FromSeconds(5)); | |
927 | |
928 // Check that process was really killed. | |
929 EXPECT_TRUE(IsProcessDead(child_process)); | |
930 base::CloseProcessHandle(child_process); | |
931 } | |
932 | |
933 MULTIPROCESS_TEST_MAIN(process_util_test_never_die) { | |
934 while (1) { | |
935 sleep(500); | |
936 } | |
937 return 0; | |
938 } | |
939 | |
940 TEST_F(ProcessUtilTest, ImmediateTermination) { | |
941 base::ProcessHandle child_process = | |
942 SpawnChild("process_util_test_die_immediately", false); | |
943 ASSERT_TRUE(child_process); | |
944 // Give it time to die. | |
945 sleep(2); | |
946 base::EnsureProcessTerminated(child_process); | |
947 | |
948 // Check that process was really killed. | |
949 EXPECT_TRUE(IsProcessDead(child_process)); | |
950 base::CloseProcessHandle(child_process); | |
951 } | |
952 | |
953 MULTIPROCESS_TEST_MAIN(process_util_test_die_immediately) { | |
954 return 0; | |
955 } | |
956 | |
957 #endif // defined(OS_POSIX) | |
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