diff options
Diffstat (limited to 'src/gtest-port.cc')
| -rw-r--r-- | src/gtest-port.cc | 576 |
1 files changed, 515 insertions, 61 deletions
diff --git a/src/gtest-port.cc b/src/gtest-port.cc index 0c4df5f..e5bf3dd 100644 --- a/src/gtest-port.cc +++ b/src/gtest-port.cc @@ -35,15 +35,16 @@ #include <stdlib.h> #include <stdio.h> #include <string.h> +#include <fstream> -#if GTEST_OS_WINDOWS_MOBILE -# include <windows.h> // For TerminateProcess() -#elif GTEST_OS_WINDOWS +#if GTEST_OS_WINDOWS +# include <windows.h> # include <io.h> # include <sys/stat.h> +# include <map> // Used in ThreadLocal. #else # include <unistd.h> -#endif // GTEST_OS_WINDOWS_MOBILE +#endif // GTEST_OS_WINDOWS #if GTEST_OS_MAC # include <mach/mach_init.h> @@ -53,9 +54,15 @@ #if GTEST_OS_QNX # include <devctl.h> +# include <fcntl.h> # include <sys/procfs.h> #endif // GTEST_OS_QNX +#if GTEST_OS_AIX +# include <procinfo.h> +# include <sys/types.h> +#endif // GTEST_OS_AIX + #include "gtest/gtest-spi.h" #include "gtest/gtest-message.h" #include "gtest/internal/gtest-internal.h" @@ -63,9 +70,9 @@ // Indicates that this translation unit is part of Google Test's // implementation. It must come before gtest-internal-inl.h is -// included, or there will be a compiler error. This trick is to -// prevent a user from accidentally including gtest-internal-inl.h in -// his code. +// included, or there will be a compiler error. This trick exists to +// prevent the accidental inclusion of gtest-internal-inl.h in the +// user's code. #define GTEST_IMPLEMENTATION_ 1 #include "src/gtest-internal-inl.h" #undef GTEST_IMPLEMENTATION_ @@ -82,10 +89,31 @@ const int kStdOutFileno = STDOUT_FILENO; const int kStdErrFileno = STDERR_FILENO; #endif // _MSC_VER -#if GTEST_OS_MAC +#if GTEST_OS_LINUX + +namespace { +template <typename T> +T ReadProcFileField(const string& filename, int field) { + std::string dummy; + std::ifstream file(filename.c_str()); + while (field-- > 0) { + file >> dummy; + } + T output = 0; + file >> output; + return output; +} +} // namespace + +// Returns the number of active threads, or 0 when there is an error. +size_t GetThreadCount() { + const string filename = + (Message() << "/proc/" << getpid() << "/stat").GetString(); + return ReadProcFileField<int>(filename, 19); +} + +#elif GTEST_OS_MAC -// Returns the number of threads running in the process, or 0 to indicate that -// we cannot detect it. size_t GetThreadCount() { const task_t task = mach_task_self(); mach_msg_type_number_t thread_count; @@ -123,6 +151,19 @@ size_t GetThreadCount() { } } +#elif GTEST_OS_AIX + +size_t GetThreadCount() { + struct procentry64 entry; + pid_t pid = getpid(); + int status = getprocs64(&entry, sizeof(entry), NULL, 0, &pid, 1); + if (status == 1) { + return entry.pi_thcount; + } else { + return 0; + } +} + #else size_t GetThreadCount() { @@ -131,7 +172,390 @@ size_t GetThreadCount() { return 0; } -#endif // GTEST_OS_MAC +#endif // GTEST_OS_LINUX + +#if GTEST_IS_THREADSAFE && GTEST_OS_WINDOWS + +void SleepMilliseconds(int n) { + ::Sleep(n); +} + +AutoHandle::AutoHandle() + : handle_(INVALID_HANDLE_VALUE) {} + +AutoHandle::AutoHandle(Handle handle) + : handle_(handle) {} + +AutoHandle::~AutoHandle() { + Reset(); +} + +AutoHandle::Handle AutoHandle::Get() const { + return handle_; +} + +void AutoHandle::Reset() { + Reset(INVALID_HANDLE_VALUE); +} + +void AutoHandle::Reset(HANDLE handle) { + // Resetting with the same handle we already own is invalid. + if (handle_ != handle) { + if (IsCloseable()) { + ::CloseHandle(handle_); + } + handle_ = handle; + } else { + GTEST_CHECK_(!IsCloseable()) + << "Resetting a valid handle to itself is likely a programmer error " + "and thus not allowed."; + } +} + +bool AutoHandle::IsCloseable() const { + // Different Windows APIs may use either of these values to represent an + // invalid handle. + return handle_ != NULL && handle_ != INVALID_HANDLE_VALUE; +} + +Notification::Notification() + : event_(::CreateEvent(NULL, // Default security attributes. + TRUE, // Do not reset automatically. + FALSE, // Initially unset. + NULL)) { // Anonymous event. + GTEST_CHECK_(event_.Get() != NULL); +} + +void Notification::Notify() { + GTEST_CHECK_(::SetEvent(event_.Get()) != FALSE); +} + +void Notification::WaitForNotification() { + GTEST_CHECK_( + ::WaitForSingleObject(event_.Get(), INFINITE) == WAIT_OBJECT_0); +} + +Mutex::Mutex() + : owner_thread_id_(0), + type_(kDynamic), + critical_section_init_phase_(0), + critical_section_(new CRITICAL_SECTION) { + ::InitializeCriticalSection(critical_section_); +} + +Mutex::~Mutex() { + // Static mutexes are leaked intentionally. It is not thread-safe to try + // to clean them up. + // TODO(yukawa): Switch to Slim Reader/Writer (SRW) Locks, which requires + // nothing to clean it up but is available only on Vista and later. + // http://msdn.microsoft.com/en-us/library/windows/desktop/aa904937.aspx + if (type_ == kDynamic) { + ::DeleteCriticalSection(critical_section_); + delete critical_section_; + critical_section_ = NULL; + } +} + +void Mutex::Lock() { + ThreadSafeLazyInit(); + ::EnterCriticalSection(critical_section_); + owner_thread_id_ = ::GetCurrentThreadId(); +} + +void Mutex::Unlock() { + ThreadSafeLazyInit(); + // We don't protect writing to owner_thread_id_ here, as it's the + // caller's responsibility to ensure that the current thread holds the + // mutex when this is called. + owner_thread_id_ = 0; + ::LeaveCriticalSection(critical_section_); +} + +// Does nothing if the current thread holds the mutex. Otherwise, crashes +// with high probability. +void Mutex::AssertHeld() { + ThreadSafeLazyInit(); + GTEST_CHECK_(owner_thread_id_ == ::GetCurrentThreadId()) + << "The current thread is not holding the mutex @" << this; +} + +// Initializes owner_thread_id_ and critical_section_ in static mutexes. +void Mutex::ThreadSafeLazyInit() { + // Dynamic mutexes are initialized in the constructor. + if (type_ == kStatic) { + switch ( + ::InterlockedCompareExchange(&critical_section_init_phase_, 1L, 0L)) { + case 0: + // If critical_section_init_phase_ was 0 before the exchange, we + // are the first to test it and need to perform the initialization. + owner_thread_id_ = 0; + critical_section_ = new CRITICAL_SECTION; + ::InitializeCriticalSection(critical_section_); + // Updates the critical_section_init_phase_ to 2 to signal + // initialization complete. + GTEST_CHECK_(::InterlockedCompareExchange( + &critical_section_init_phase_, 2L, 1L) == + 1L); + break; + case 1: + // Somebody else is already initializing the mutex; spin until they + // are done. + while (::InterlockedCompareExchange(&critical_section_init_phase_, + 2L, + 2L) != 2L) { + // Possibly yields the rest of the thread's time slice to other + // threads. + ::Sleep(0); + } + break; + + case 2: + break; // The mutex is already initialized and ready for use. + + default: + GTEST_CHECK_(false) + << "Unexpected value of critical_section_init_phase_ " + << "while initializing a static mutex."; + } + } +} + +namespace { + +class ThreadWithParamSupport : public ThreadWithParamBase { + public: + static HANDLE CreateThread(Runnable* runnable, + Notification* thread_can_start) { + ThreadMainParam* param = new ThreadMainParam(runnable, thread_can_start); + DWORD thread_id; + // TODO(yukawa): Consider to use _beginthreadex instead. + HANDLE thread_handle = ::CreateThread( + NULL, // Default security. + 0, // Default stack size. + &ThreadWithParamSupport::ThreadMain, + param, // Parameter to ThreadMainStatic + 0x0, // Default creation flags. + &thread_id); // Need a valid pointer for the call to work under Win98. + GTEST_CHECK_(thread_handle != NULL) << "CreateThread failed with error " + << ::GetLastError() << "."; + if (thread_handle == NULL) { + delete param; + } + return thread_handle; + } + + private: + struct ThreadMainParam { + ThreadMainParam(Runnable* runnable, Notification* thread_can_start) + : runnable_(runnable), + thread_can_start_(thread_can_start) { + } + scoped_ptr<Runnable> runnable_; + // Does not own. + Notification* thread_can_start_; + }; + + static DWORD WINAPI ThreadMain(void* ptr) { + // Transfers ownership. + scoped_ptr<ThreadMainParam> param(static_cast<ThreadMainParam*>(ptr)); + if (param->thread_can_start_ != NULL) + param->thread_can_start_->WaitForNotification(); + param->runnable_->Run(); + return 0; + } + + // Prohibit instantiation. + ThreadWithParamSupport(); + + GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParamSupport); +}; + +} // namespace + +ThreadWithParamBase::ThreadWithParamBase(Runnable *runnable, + Notification* thread_can_start) + : thread_(ThreadWithParamSupport::CreateThread(runnable, + thread_can_start)) { +} + +ThreadWithParamBase::~ThreadWithParamBase() { + Join(); +} + +void ThreadWithParamBase::Join() { + GTEST_CHECK_(::WaitForSingleObject(thread_.Get(), INFINITE) == WAIT_OBJECT_0) + << "Failed to join the thread with error " << ::GetLastError() << "."; +} + +// Maps a thread to a set of ThreadIdToThreadLocals that have values +// instantiated on that thread and notifies them when the thread exits. A +// ThreadLocal instance is expected to persist until all threads it has +// values on have terminated. +class ThreadLocalRegistryImpl { + public: + // Registers thread_local_instance as having value on the current thread. + // Returns a value that can be used to identify the thread from other threads. + static ThreadLocalValueHolderBase* GetValueOnCurrentThread( + const ThreadLocalBase* thread_local_instance) { + DWORD current_thread = ::GetCurrentThreadId(); + MutexLock lock(&mutex_); + ThreadIdToThreadLocals* const thread_to_thread_locals = + GetThreadLocalsMapLocked(); + ThreadIdToThreadLocals::iterator thread_local_pos = + thread_to_thread_locals->find(current_thread); + if (thread_local_pos == thread_to_thread_locals->end()) { + thread_local_pos = thread_to_thread_locals->insert( + std::make_pair(current_thread, ThreadLocalValues())).first; + StartWatcherThreadFor(current_thread); + } + ThreadLocalValues& thread_local_values = thread_local_pos->second; + ThreadLocalValues::iterator value_pos = + thread_local_values.find(thread_local_instance); + if (value_pos == thread_local_values.end()) { + value_pos = + thread_local_values + .insert(std::make_pair( + thread_local_instance, + linked_ptr<ThreadLocalValueHolderBase>( + thread_local_instance->NewValueForCurrentThread()))) + .first; + } + return value_pos->second.get(); + } + + static void OnThreadLocalDestroyed( + const ThreadLocalBase* thread_local_instance) { + std::vector<linked_ptr<ThreadLocalValueHolderBase> > value_holders; + // Clean up the ThreadLocalValues data structure while holding the lock, but + // defer the destruction of the ThreadLocalValueHolderBases. + { + MutexLock lock(&mutex_); + ThreadIdToThreadLocals* const thread_to_thread_locals = + GetThreadLocalsMapLocked(); + for (ThreadIdToThreadLocals::iterator it = + thread_to_thread_locals->begin(); + it != thread_to_thread_locals->end(); + ++it) { + ThreadLocalValues& thread_local_values = it->second; + ThreadLocalValues::iterator value_pos = + thread_local_values.find(thread_local_instance); + if (value_pos != thread_local_values.end()) { + value_holders.push_back(value_pos->second); + thread_local_values.erase(value_pos); + // This 'if' can only be successful at most once, so theoretically we + // could break out of the loop here, but we don't bother doing so. + } + } + } + // Outside the lock, let the destructor for 'value_holders' deallocate the + // ThreadLocalValueHolderBases. + } + + static void OnThreadExit(DWORD thread_id) { + GTEST_CHECK_(thread_id != 0) << ::GetLastError(); + std::vector<linked_ptr<ThreadLocalValueHolderBase> > value_holders; + // Clean up the ThreadIdToThreadLocals data structure while holding the + // lock, but defer the destruction of the ThreadLocalValueHolderBases. + { + MutexLock lock(&mutex_); + ThreadIdToThreadLocals* const thread_to_thread_locals = + GetThreadLocalsMapLocked(); + ThreadIdToThreadLocals::iterator thread_local_pos = + thread_to_thread_locals->find(thread_id); + if (thread_local_pos != thread_to_thread_locals->end()) { + ThreadLocalValues& thread_local_values = thread_local_pos->second; + for (ThreadLocalValues::iterator value_pos = + thread_local_values.begin(); + value_pos != thread_local_values.end(); + ++value_pos) { + value_holders.push_back(value_pos->second); + } + thread_to_thread_locals->erase(thread_local_pos); + } + } + // Outside the lock, let the destructor for 'value_holders' deallocate the + // ThreadLocalValueHolderBases. + } + + private: + // In a particular thread, maps a ThreadLocal object to its value. + typedef std::map<const ThreadLocalBase*, + linked_ptr<ThreadLocalValueHolderBase> > ThreadLocalValues; + // Stores all ThreadIdToThreadLocals having values in a thread, indexed by + // thread's ID. + typedef std::map<DWORD, ThreadLocalValues> ThreadIdToThreadLocals; + + // Holds the thread id and thread handle that we pass from + // StartWatcherThreadFor to WatcherThreadFunc. + typedef std::pair<DWORD, HANDLE> ThreadIdAndHandle; + + static void StartWatcherThreadFor(DWORD thread_id) { + // The returned handle will be kept in thread_map and closed by + // watcher_thread in WatcherThreadFunc. + HANDLE thread = ::OpenThread(SYNCHRONIZE | THREAD_QUERY_INFORMATION, + FALSE, + thread_id); + GTEST_CHECK_(thread != NULL); + // We need to to pass a valid thread ID pointer into CreateThread for it + // to work correctly under Win98. + DWORD watcher_thread_id; + HANDLE watcher_thread = ::CreateThread( + NULL, // Default security. + 0, // Default stack size + &ThreadLocalRegistryImpl::WatcherThreadFunc, + reinterpret_cast<LPVOID>(new ThreadIdAndHandle(thread_id, thread)), + CREATE_SUSPENDED, + &watcher_thread_id); + GTEST_CHECK_(watcher_thread != NULL); + // Give the watcher thread the same priority as ours to avoid being + // blocked by it. + ::SetThreadPriority(watcher_thread, + ::GetThreadPriority(::GetCurrentThread())); + ::ResumeThread(watcher_thread); + ::CloseHandle(watcher_thread); + } + + // Monitors exit from a given thread and notifies those + // ThreadIdToThreadLocals about thread termination. + static DWORD WINAPI WatcherThreadFunc(LPVOID param) { + const ThreadIdAndHandle* tah = + reinterpret_cast<const ThreadIdAndHandle*>(param); + GTEST_CHECK_( + ::WaitForSingleObject(tah->second, INFINITE) == WAIT_OBJECT_0); + OnThreadExit(tah->first); + ::CloseHandle(tah->second); + delete tah; + return 0; + } + + // Returns map of thread local instances. + static ThreadIdToThreadLocals* GetThreadLocalsMapLocked() { + mutex_.AssertHeld(); + static ThreadIdToThreadLocals* map = new ThreadIdToThreadLocals; + return map; + } + + // Protects access to GetThreadLocalsMapLocked() and its return value. + static Mutex mutex_; + // Protects access to GetThreadMapLocked() and its return value. + static Mutex thread_map_mutex_; +}; + +Mutex ThreadLocalRegistryImpl::mutex_(Mutex::kStaticMutex); +Mutex ThreadLocalRegistryImpl::thread_map_mutex_(Mutex::kStaticMutex); + +ThreadLocalValueHolderBase* ThreadLocalRegistry::GetValueOnCurrentThread( + const ThreadLocalBase* thread_local_instance) { + return ThreadLocalRegistryImpl::GetValueOnCurrentThread( + thread_local_instance); +} + +void ThreadLocalRegistry::OnThreadLocalDestroyed( + const ThreadLocalBase* thread_local_instance) { + ThreadLocalRegistryImpl::OnThreadLocalDestroyed(thread_local_instance); +} + +#endif // GTEST_IS_THREADSAFE && GTEST_OS_WINDOWS #if GTEST_USES_POSIX_RE @@ -481,7 +905,6 @@ GTEST_API_ ::std::string FormatCompilerIndependentFileLocation( return file_name + ":" + StreamableToString(line); } - GTestLog::GTestLog(GTestLogSeverity severity, const char* file, int line) : severity_(severity) { const char* const marker = @@ -502,10 +925,7 @@ GTestLog::~GTestLog() { } // Disable Microsoft deprecation warnings for POSIX functions called from // this class (creat, dup, dup2, and close) -#ifdef _MSC_VER -# pragma warning(push) -# pragma warning(disable: 4996) -#endif // _MSC_VER +GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996) #if GTEST_HAS_STREAM_REDIRECTION @@ -581,12 +1001,6 @@ class CapturedStream { } private: - // Reads the entire content of a file as an std::string. - static std::string ReadEntireFile(FILE* file); - - // Returns the size (in bytes) of a file. - static size_t GetFileSize(FILE* file); - const int fd_; // A stream to capture. int uncaptured_fd_; // Name of the temporary file holding the stderr output. @@ -595,38 +1009,7 @@ class CapturedStream { GTEST_DISALLOW_COPY_AND_ASSIGN_(CapturedStream); }; -// Returns the size (in bytes) of a file. -size_t CapturedStream::GetFileSize(FILE* file) { - fseek(file, 0, SEEK_END); - return static_cast<size_t>(ftell(file)); -} - -// Reads the entire content of a file as a string. -std::string CapturedStream::ReadEntireFile(FILE* file) { - const size_t file_size = GetFileSize(file); - char* const buffer = new char[file_size]; - - size_t bytes_last_read = 0; // # of bytes read in the last fread() - size_t bytes_read = 0; // # of bytes read so far - - fseek(file, 0, SEEK_SET); - - // Keeps reading the file until we cannot read further or the - // pre-determined file size is reached. - do { - bytes_last_read = fread(buffer+bytes_read, 1, file_size-bytes_read, file); - bytes_read += bytes_last_read; - } while (bytes_last_read > 0 && bytes_read < file_size); - - const std::string content(buffer, bytes_read); - delete[] buffer; - - return content; -} - -# ifdef _MSC_VER -# pragma warning(pop) -# endif // _MSC_VER +GTEST_DISABLE_MSC_WARNINGS_POP_() static CapturedStream* g_captured_stderr = NULL; static CapturedStream* g_captured_stdout = NULL; @@ -672,10 +1055,52 @@ std::string GetCapturedStderr() { #endif // GTEST_HAS_STREAM_REDIRECTION -#if GTEST_HAS_DEATH_TEST +std::string TempDir() { +#if GTEST_OS_WINDOWS_MOBILE + return "\\temp\\"; +#elif GTEST_OS_WINDOWS + const char* temp_dir = posix::GetEnv("TEMP"); + if (temp_dir == NULL || temp_dir[0] == '\0') + return "\\temp\\"; + else if (temp_dir[strlen(temp_dir) - 1] == '\\') + return temp_dir; + else + return std::string(temp_dir) + "\\"; +#elif GTEST_OS_LINUX_ANDROID + return "/sdcard/"; +#else + return "/tmp/"; +#endif // GTEST_OS_WINDOWS_MOBILE +} + +size_t GetFileSize(FILE* file) { + fseek(file, 0, SEEK_END); + return static_cast<size_t>(ftell(file)); +} + +std::string ReadEntireFile(FILE* file) { + const size_t file_size = GetFileSize(file); + char* const buffer = new char[file_size]; + + size_t bytes_last_read = 0; // # of bytes read in the last fread() + size_t bytes_read = 0; // # of bytes read so far + + fseek(file, 0, SEEK_SET); + + // Keeps reading the file until we cannot read further or the + // pre-determined file size is reached. + do { + bytes_last_read = fread(buffer+bytes_read, 1, file_size-bytes_read, file); + bytes_read += bytes_last_read; + } while (bytes_last_read > 0 && bytes_read < file_size); + + const std::string content(buffer, bytes_read); + delete[] buffer; + + return content; +} -// A copy of all command line arguments. Set by InitGoogleTest(). -::std::vector<testing::internal::string> g_argvs; +#if GTEST_HAS_DEATH_TEST static const ::std::vector<testing::internal::string>* g_injected_test_argvs = NULL; // Owned. @@ -690,7 +1115,7 @@ const ::std::vector<testing::internal::string>& GetInjectableArgvs() { if (g_injected_test_argvs != NULL) { return *g_injected_test_argvs; } - return g_argvs; + return GetArgvs(); } #endif // GTEST_HAS_DEATH_TEST @@ -764,6 +1189,9 @@ bool ParseInt32(const Message& src_text, const char* str, Int32* value) { // // The value is considered true iff it's not "0". bool BoolFromGTestEnv(const char* flag, bool default_value) { +#if defined(GTEST_GET_BOOL_FROM_ENV_) + return GTEST_GET_BOOL_FROM_ENV_(flag, default_value); +#endif // defined(GTEST_GET_BOOL_FROM_ENV_) const std::string env_var = FlagToEnvVar(flag); const char* const string_value = posix::GetEnv(env_var.c_str()); return string_value == NULL ? @@ -774,6 +1202,9 @@ bool BoolFromGTestEnv(const char* flag, bool default_value) { // variable corresponding to the given flag; if it isn't set or // doesn't represent a valid 32-bit integer, returns default_value. Int32 Int32FromGTestEnv(const char* flag, Int32 default_value) { +#if defined(GTEST_GET_INT32_FROM_ENV_) + return GTEST_GET_INT32_FROM_ENV_(flag, default_value); +#endif // defined(GTEST_GET_INT32_FROM_ENV_) const std::string env_var = FlagToEnvVar(flag); const char* const string_value = posix::GetEnv(env_var.c_str()); if (string_value == NULL) { @@ -795,10 +1226,33 @@ Int32 Int32FromGTestEnv(const char* flag, Int32 default_value) { // Reads and returns the string environment variable corresponding to // the given flag; if it's not set, returns default_value. -const char* StringFromGTestEnv(const char* flag, const char* default_value) { +std::string StringFromGTestEnv(const char* flag, const char* default_value) { +#if defined(GTEST_GET_STRING_FROM_ENV_) + return GTEST_GET_STRING_FROM_ENV_(flag, default_value); +#endif // defined(GTEST_GET_STRING_FROM_ENV_) const std::string env_var = FlagToEnvVar(flag); - const char* const value = posix::GetEnv(env_var.c_str()); - return value == NULL ? default_value : value; + const char* value = posix::GetEnv(env_var.c_str()); + if (value != NULL) { + return value; + } + + // As a special case for the 'output' flag, if GTEST_OUTPUT is not + // set, we look for XML_OUTPUT_FILE, which is set by the Bazel build + // system. The value of XML_OUTPUT_FILE is a filename without the + // "xml:" prefix of GTEST_OUTPUT. + // + // The net priority order after flag processing is thus: + // --gtest_output command line flag + // GTEST_OUTPUT environment variable + // XML_OUTPUT_FILE environment variable + // 'default_value' + if (strcmp(flag, "output") == 0) { + value = posix::GetEnv("XML_OUTPUT_FILE"); + if (value != NULL) { + return std::string("xml:") + value; + } + } + return default_value; } } // namespace internal |