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google/googletest/dist/googletest/src/gtest-port.cc
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// Copyright 2008, Google Inc. | |||||
// All rights reserved. | |||||
// | |||||
// Redistribution and use in source and binary forms, with or without | |||||
// modification, are permitted provided that the following conditions are | |||||
// met: | |||||
// | |||||
// * Redistributions of source code must retain the above copyright | |||||
// notice, this list of conditions and the following disclaimer. | |||||
// * Redistributions in binary form must reproduce the above | |||||
// copyright notice, this list of conditions and the following disclaimer | |||||
// in the documentation and/or other materials provided with the | |||||
// distribution. | |||||
// * Neither the name of Google Inc. nor the names of its | |||||
// contributors may be used to endorse or promote products derived from | |||||
// this software without specific prior written permission. | |||||
// | |||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |||||
#include "gtest/internal/gtest-port.h" | |||||
#include <limits.h> | |||||
#include <stdlib.h> | |||||
#include <stdio.h> | |||||
#include <string.h> | |||||
#include <fstream> | |||||
#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 | |||||
#if GTEST_OS_MAC | |||||
# include <mach/mach_init.h> | |||||
# include <mach/task.h> | |||||
# include <mach/vm_map.h> | |||||
#endif // GTEST_OS_MAC | |||||
#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 | |||||
#if GTEST_OS_FUCHSIA | |||||
# include <zircon/process.h> | |||||
# include <zircon/syscalls.h> | |||||
#endif // GTEST_OS_FUCHSIA | |||||
#include "gtest/gtest-spi.h" | |||||
#include "gtest/gtest-message.h" | |||||
#include "gtest/internal/gtest-internal.h" | |||||
#include "gtest/internal/gtest-string.h" | |||||
#include "src/gtest-internal-inl.h" | |||||
namespace testing { | |||||
namespace internal { | |||||
#if defined(_MSC_VER) || defined(__BORLANDC__) | |||||
// MSVC and C++Builder do not provide a definition of STDERR_FILENO. | |||||
const int kStdOutFileno = 1; | |||||
const int kStdErrFileno = 2; | |||||
#else | |||||
const int kStdOutFileno = STDOUT_FILENO; | |||||
const int kStdErrFileno = STDERR_FILENO; | |||||
#endif // _MSC_VER | |||||
#if GTEST_OS_LINUX | |||||
namespace { | |||||
template <typename T> | |||||
T ReadProcFileField(const std::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 std::string filename = | |||||
(Message() << "/proc/" << getpid() << "/stat").GetString(); | |||||
return ReadProcFileField<int>(filename, 19); | |||||
} | |||||
#elif GTEST_OS_MAC | |||||
size_t GetThreadCount() { | |||||
const task_t task = mach_task_self(); | |||||
mach_msg_type_number_t thread_count; | |||||
thread_act_array_t thread_list; | |||||
const kern_return_t status = task_threads(task, &thread_list, &thread_count); | |||||
if (status == KERN_SUCCESS) { | |||||
// task_threads allocates resources in thread_list and we need to free them | |||||
// to avoid leaks. | |||||
vm_deallocate(task, | |||||
reinterpret_cast<vm_address_t>(thread_list), | |||||
sizeof(thread_t) * thread_count); | |||||
return static_cast<size_t>(thread_count); | |||||
} else { | |||||
return 0; | |||||
} | |||||
} | |||||
#elif GTEST_OS_QNX | |||||
// Returns the number of threads running in the process, or 0 to indicate that | |||||
// we cannot detect it. | |||||
size_t GetThreadCount() { | |||||
const int fd = open("/proc/self/as", O_RDONLY); | |||||
if (fd < 0) { | |||||
return 0; | |||||
} | |||||
procfs_info process_info; | |||||
const int status = | |||||
devctl(fd, DCMD_PROC_INFO, &process_info, sizeof(process_info), NULL); | |||||
close(fd); | |||||
if (status == EOK) { | |||||
return static_cast<size_t>(process_info.num_threads); | |||||
} else { | |||||
return 0; | |||||
} | |||||
} | |||||
#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; | |||||
} | |||||
} | |||||
#elif GTEST_OS_FUCHSIA | |||||
size_t GetThreadCount() { | |||||
int dummy_buffer; | |||||
size_t avail; | |||||
zx_status_t status = zx_object_get_info( | |||||
zx_process_self(), | |||||
ZX_INFO_PROCESS_THREADS, | |||||
&dummy_buffer, | |||||
0, | |||||
nullptr, | |||||
&avail); | |||||
if (status == ZX_OK) { | |||||
return avail; | |||||
} else { | |||||
return 0; | |||||
} | |||||
} | |||||
#else | |||||
size_t GetThreadCount() { | |||||
// There's no portable way to detect the number of threads, so we just | |||||
// return 0 to indicate that we cannot detect it. | |||||
return 0; | |||||
} | |||||
#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. | |||||
// FIXME: Switch to Slim Reader/Writer (SRW) Locks, which requires | |||||
// nothing to clean it up but is available only on Vista and later. | |||||
// https://docs.microsoft.com/en-us/windows/desktop/Sync/slim-reader-writer--srw--locks | |||||
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; | |||||
} | |||||
namespace { | |||||
// Use the RAII idiom to flag mem allocs that are intentionally never | |||||
// deallocated. The motivation is to silence the false positive mem leaks | |||||
// that are reported by the debug version of MS's CRT which can only detect | |||||
// if an alloc is missing a matching deallocation. | |||||
// Example: | |||||
// MemoryIsNotDeallocated memory_is_not_deallocated; | |||||
// critical_section_ = new CRITICAL_SECTION; | |||||
// | |||||
class MemoryIsNotDeallocated | |||||
{ | |||||
public: | |||||
MemoryIsNotDeallocated() : old_crtdbg_flag_(0) { | |||||
#ifdef _MSC_VER | |||||
old_crtdbg_flag_ = _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG); | |||||
// Set heap allocation block type to _IGNORE_BLOCK so that MS debug CRT | |||||
// doesn't report mem leak if there's no matching deallocation. | |||||
_CrtSetDbgFlag(old_crtdbg_flag_ & ~_CRTDBG_ALLOC_MEM_DF); | |||||
#endif // _MSC_VER | |||||
} | |||||
~MemoryIsNotDeallocated() { | |||||
#ifdef _MSC_VER | |||||
// Restore the original _CRTDBG_ALLOC_MEM_DF flag | |||||
_CrtSetDbgFlag(old_crtdbg_flag_); | |||||
#endif // _MSC_VER | |||||
} | |||||
private: | |||||
int old_crtdbg_flag_; | |||||
GTEST_DISALLOW_COPY_AND_ASSIGN_(MemoryIsNotDeallocated); | |||||
}; | |||||
} // namespace | |||||
// 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; | |||||
{ | |||||
// Use RAII to flag that following mem alloc is never deallocated. | |||||
MemoryIsNotDeallocated memory_is_not_deallocated; | |||||
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; | |||||
// FIXME: 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 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(); | |||||
MemoryIsNotDeallocated memory_is_not_deallocated; | |||||
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 | |||||
// Implements RE. Currently only needed for death tests. | |||||
RE::~RE() { | |||||
if (is_valid_) { | |||||
// regfree'ing an invalid regex might crash because the content | |||||
// of the regex is undefined. Since the regex's are essentially | |||||
// the same, one cannot be valid (or invalid) without the other | |||||
// being so too. | |||||
regfree(&partial_regex_); | |||||
regfree(&full_regex_); | |||||
} | |||||
free(const_cast<char*>(pattern_)); | |||||
} | |||||
// Returns true iff regular expression re matches the entire str. | |||||
bool RE::FullMatch(const char* str, const RE& re) { | |||||
if (!re.is_valid_) return false; | |||||
regmatch_t match; | |||||
return regexec(&re.full_regex_, str, 1, &match, 0) == 0; | |||||
} | |||||
// Returns true iff regular expression re matches a substring of str | |||||
// (including str itself). | |||||
bool RE::PartialMatch(const char* str, const RE& re) { | |||||
if (!re.is_valid_) return false; | |||||
regmatch_t match; | |||||
return regexec(&re.partial_regex_, str, 1, &match, 0) == 0; | |||||
} | |||||
// Initializes an RE from its string representation. | |||||
void RE::Init(const char* regex) { | |||||
pattern_ = posix::StrDup(regex); | |||||
// Reserves enough bytes to hold the regular expression used for a | |||||
// full match. | |||||
const size_t full_regex_len = strlen(regex) + 10; | |||||
char* const full_pattern = new char[full_regex_len]; | |||||
snprintf(full_pattern, full_regex_len, "^(%s)$", regex); | |||||
is_valid_ = regcomp(&full_regex_, full_pattern, REG_EXTENDED) == 0; | |||||
// We want to call regcomp(&partial_regex_, ...) even if the | |||||
// previous expression returns false. Otherwise partial_regex_ may | |||||
// not be properly initialized can may cause trouble when it's | |||||
// freed. | |||||
// | |||||
// Some implementation of POSIX regex (e.g. on at least some | |||||
// versions of Cygwin) doesn't accept the empty string as a valid | |||||
// regex. We change it to an equivalent form "()" to be safe. | |||||
if (is_valid_) { | |||||
const char* const partial_regex = (*regex == '\0') ? "()" : regex; | |||||
is_valid_ = regcomp(&partial_regex_, partial_regex, REG_EXTENDED) == 0; | |||||
} | |||||
EXPECT_TRUE(is_valid_) | |||||
<< "Regular expression \"" << regex | |||||
<< "\" is not a valid POSIX Extended regular expression."; | |||||
delete[] full_pattern; | |||||
} | |||||
#elif GTEST_USES_SIMPLE_RE | |||||
// Returns true iff ch appears anywhere in str (excluding the | |||||
// terminating '\0' character). | |||||
bool IsInSet(char ch, const char* str) { | |||||
return ch != '\0' && strchr(str, ch) != NULL; | |||||
} | |||||
// Returns true iff ch belongs to the given classification. Unlike | |||||
// similar functions in <ctype.h>, these aren't affected by the | |||||
// current locale. | |||||
bool IsAsciiDigit(char ch) { return '0' <= ch && ch <= '9'; } | |||||
bool IsAsciiPunct(char ch) { | |||||
return IsInSet(ch, "^-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~"); | |||||
} | |||||
bool IsRepeat(char ch) { return IsInSet(ch, "?*+"); } | |||||
bool IsAsciiWhiteSpace(char ch) { return IsInSet(ch, " \f\n\r\t\v"); } | |||||
bool IsAsciiWordChar(char ch) { | |||||
return ('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z') || | |||||
('0' <= ch && ch <= '9') || ch == '_'; | |||||
} | |||||
// Returns true iff "\\c" is a supported escape sequence. | |||||
bool IsValidEscape(char c) { | |||||
return (IsAsciiPunct(c) || IsInSet(c, "dDfnrsStvwW")); | |||||
} | |||||
// Returns true iff the given atom (specified by escaped and pattern) | |||||
// matches ch. The result is undefined if the atom is invalid. | |||||
bool AtomMatchesChar(bool escaped, char pattern_char, char ch) { | |||||
if (escaped) { // "\\p" where p is pattern_char. | |||||
switch (pattern_char) { | |||||
case 'd': return IsAsciiDigit(ch); | |||||
case 'D': return !IsAsciiDigit(ch); | |||||
case 'f': return ch == '\f'; | |||||
case 'n': return ch == '\n'; | |||||
case 'r': return ch == '\r'; | |||||
case 's': return IsAsciiWhiteSpace(ch); | |||||
case 'S': return !IsAsciiWhiteSpace(ch); | |||||
case 't': return ch == '\t'; | |||||
case 'v': return ch == '\v'; | |||||
case 'w': return IsAsciiWordChar(ch); | |||||
case 'W': return !IsAsciiWordChar(ch); | |||||
} | |||||
return IsAsciiPunct(pattern_char) && pattern_char == ch; | |||||
} | |||||
return (pattern_char == '.' && ch != '\n') || pattern_char == ch; | |||||
} | |||||
// Helper function used by ValidateRegex() to format error messages. | |||||
static std::string FormatRegexSyntaxError(const char* regex, int index) { | |||||
return (Message() << "Syntax error at index " << index | |||||
<< " in simple regular expression \"" << regex << "\": ").GetString(); | |||||
} | |||||
// Generates non-fatal failures and returns false if regex is invalid; | |||||
// otherwise returns true. | |||||
bool ValidateRegex(const char* regex) { | |||||
if (regex == NULL) { | |||||
// FIXME: fix the source file location in the | |||||
// assertion failures to match where the regex is used in user | |||||
// code. | |||||
ADD_FAILURE() << "NULL is not a valid simple regular expression."; | |||||
return false; | |||||
} | |||||
bool is_valid = true; | |||||
// True iff ?, *, or + can follow the previous atom. | |||||
bool prev_repeatable = false; | |||||
for (int i = 0; regex[i]; i++) { | |||||
if (regex[i] == '\\') { // An escape sequence | |||||
i++; | |||||
if (regex[i] == '\0') { | |||||
ADD_FAILURE() << FormatRegexSyntaxError(regex, i - 1) | |||||
<< "'\\' cannot appear at the end."; | |||||
return false; | |||||
} | |||||
if (!IsValidEscape(regex[i])) { | |||||
ADD_FAILURE() << FormatRegexSyntaxError(regex, i - 1) | |||||
<< "invalid escape sequence \"\\" << regex[i] << "\"."; | |||||
is_valid = false; | |||||
} | |||||
prev_repeatable = true; | |||||
} else { // Not an escape sequence. | |||||
const char ch = regex[i]; | |||||
if (ch == '^' && i > 0) { | |||||
ADD_FAILURE() << FormatRegexSyntaxError(regex, i) | |||||
<< "'^' can only appear at the beginning."; | |||||
is_valid = false; | |||||
} else if (ch == '$' && regex[i + 1] != '\0') { | |||||
ADD_FAILURE() << FormatRegexSyntaxError(regex, i) | |||||
<< "'$' can only appear at the end."; | |||||
is_valid = false; | |||||
} else if (IsInSet(ch, "()[]{}|")) { | |||||
ADD_FAILURE() << FormatRegexSyntaxError(regex, i) | |||||
<< "'" << ch << "' is unsupported."; | |||||
is_valid = false; | |||||
} else if (IsRepeat(ch) && !prev_repeatable) { | |||||
ADD_FAILURE() << FormatRegexSyntaxError(regex, i) | |||||
<< "'" << ch << "' can only follow a repeatable token."; | |||||
is_valid = false; | |||||
} | |||||
prev_repeatable = !IsInSet(ch, "^$?*+"); | |||||
} | |||||
} | |||||
return is_valid; | |||||
} | |||||
// Matches a repeated regex atom followed by a valid simple regular | |||||
// expression. The regex atom is defined as c if escaped is false, | |||||
// or \c otherwise. repeat is the repetition meta character (?, *, | |||||
// or +). The behavior is undefined if str contains too many | |||||
// characters to be indexable by size_t, in which case the test will | |||||
// probably time out anyway. We are fine with this limitation as | |||||
// std::string has it too. | |||||
bool MatchRepetitionAndRegexAtHead( | |||||
bool escaped, char c, char repeat, const char* regex, | |||||
const char* str) { | |||||
const size_t min_count = (repeat == '+') ? 1 : 0; | |||||
const size_t max_count = (repeat == '?') ? 1 : | |||||
static_cast<size_t>(-1) - 1; | |||||
// We cannot call numeric_limits::max() as it conflicts with the | |||||
// max() macro on Windows. | |||||
for (size_t i = 0; i <= max_count; ++i) { | |||||
// We know that the atom matches each of the first i characters in str. | |||||
if (i >= min_count && MatchRegexAtHead(regex, str + i)) { | |||||
// We have enough matches at the head, and the tail matches too. | |||||
// Since we only care about *whether* the pattern matches str | |||||
// (as opposed to *how* it matches), there is no need to find a | |||||
// greedy match. | |||||
return true; | |||||
} | |||||
if (str[i] == '\0' || !AtomMatchesChar(escaped, c, str[i])) | |||||
return false; | |||||
} | |||||
return false; | |||||
} | |||||
// Returns true iff regex matches a prefix of str. regex must be a | |||||
// valid simple regular expression and not start with "^", or the | |||||
// result is undefined. | |||||
bool MatchRegexAtHead(const char* regex, const char* str) { | |||||
if (*regex == '\0') // An empty regex matches a prefix of anything. | |||||
return true; | |||||
// "$" only matches the end of a string. Note that regex being | |||||
// valid guarantees that there's nothing after "$" in it. | |||||
if (*regex == '$') | |||||
return *str == '\0'; | |||||
// Is the first thing in regex an escape sequence? | |||||
const bool escaped = *regex == '\\'; | |||||
if (escaped) | |||||
++regex; | |||||
if (IsRepeat(regex[1])) { | |||||
// MatchRepetitionAndRegexAtHead() calls MatchRegexAtHead(), so | |||||
// here's an indirect recursion. It terminates as the regex gets | |||||
// shorter in each recursion. | |||||
return MatchRepetitionAndRegexAtHead( | |||||
escaped, regex[0], regex[1], regex + 2, str); | |||||
} else { | |||||
// regex isn't empty, isn't "$", and doesn't start with a | |||||
// repetition. We match the first atom of regex with the first | |||||
// character of str and recurse. | |||||
return (*str != '\0') && AtomMatchesChar(escaped, *regex, *str) && | |||||
MatchRegexAtHead(regex + 1, str + 1); | |||||
} | |||||
} | |||||
// Returns true iff regex matches any substring of str. regex must be | |||||
// a valid simple regular expression, or the result is undefined. | |||||
// | |||||
// The algorithm is recursive, but the recursion depth doesn't exceed | |||||
// the regex length, so we won't need to worry about running out of | |||||
// stack space normally. In rare cases the time complexity can be | |||||
// exponential with respect to the regex length + the string length, | |||||
// but usually it's must faster (often close to linear). | |||||
bool MatchRegexAnywhere(const char* regex, const char* str) { | |||||
if (regex == NULL || str == NULL) | |||||
return false; | |||||
if (*regex == '^') | |||||
return MatchRegexAtHead(regex + 1, str); | |||||
// A successful match can be anywhere in str. | |||||
do { | |||||
if (MatchRegexAtHead(regex, str)) | |||||
return true; | |||||
} while (*str++ != '\0'); | |||||
return false; | |||||
} | |||||
// Implements the RE class. | |||||
RE::~RE() { | |||||
free(const_cast<char*>(pattern_)); | |||||
free(const_cast<char*>(full_pattern_)); | |||||
} | |||||
// Returns true iff regular expression re matches the entire str. | |||||
bool RE::FullMatch(const char* str, const RE& re) { | |||||
return re.is_valid_ && MatchRegexAnywhere(re.full_pattern_, str); | |||||
} | |||||
// Returns true iff regular expression re matches a substring of str | |||||
// (including str itself). | |||||
bool RE::PartialMatch(const char* str, const RE& re) { | |||||
return re.is_valid_ && MatchRegexAnywhere(re.pattern_, str); | |||||
} | |||||
// Initializes an RE from its string representation. | |||||
void RE::Init(const char* regex) { | |||||
pattern_ = full_pattern_ = NULL; | |||||
if (regex != NULL) { | |||||
pattern_ = posix::StrDup(regex); | |||||
} | |||||
is_valid_ = ValidateRegex(regex); | |||||
if (!is_valid_) { | |||||
// No need to calculate the full pattern when the regex is invalid. | |||||
return; | |||||
} | |||||
const size_t len = strlen(regex); | |||||
// Reserves enough bytes to hold the regular expression used for a | |||||
// full match: we need space to prepend a '^', append a '$', and | |||||
// terminate the string with '\0'. | |||||
char* buffer = static_cast<char*>(malloc(len + 3)); | |||||
full_pattern_ = buffer; | |||||
if (*regex != '^') | |||||
*buffer++ = '^'; // Makes sure full_pattern_ starts with '^'. | |||||
// We don't use snprintf or strncpy, as they trigger a warning when | |||||
// compiled with VC++ 8.0. | |||||
memcpy(buffer, regex, len); | |||||
buffer += len; | |||||
if (len == 0 || regex[len - 1] != '$') | |||||
*buffer++ = '$'; // Makes sure full_pattern_ ends with '$'. | |||||
*buffer = '\0'; | |||||
} | |||||
#endif // GTEST_USES_POSIX_RE | |||||
const char kUnknownFile[] = "unknown file"; | |||||
// Formats a source file path and a line number as they would appear | |||||
// in an error message from the compiler used to compile this code. | |||||
GTEST_API_ ::std::string FormatFileLocation(const char* file, int line) { | |||||
const std::string file_name(file == NULL ? kUnknownFile : file); | |||||
if (line < 0) { | |||||
return file_name + ":"; | |||||
} | |||||
#ifdef _MSC_VER | |||||
return file_name + "(" + StreamableToString(line) + "):"; | |||||
#else | |||||
return file_name + ":" + StreamableToString(line) + ":"; | |||||
#endif // _MSC_VER | |||||
} | |||||
// Formats a file location for compiler-independent XML output. | |||||
// Although this function is not platform dependent, we put it next to | |||||
// FormatFileLocation in order to contrast the two functions. | |||||
// Note that FormatCompilerIndependentFileLocation() does NOT append colon | |||||
// to the file location it produces, unlike FormatFileLocation(). | |||||
GTEST_API_ ::std::string FormatCompilerIndependentFileLocation( | |||||
const char* file, int line) { | |||||
const std::string file_name(file == NULL ? kUnknownFile : file); | |||||
if (line < 0) | |||||
return file_name; | |||||
else | |||||
return file_name + ":" + StreamableToString(line); | |||||
} | |||||
GTestLog::GTestLog(GTestLogSeverity severity, const char* file, int line) | |||||
: severity_(severity) { | |||||
const char* const marker = | |||||
severity == GTEST_INFO ? "[ INFO ]" : | |||||
severity == GTEST_WARNING ? "[WARNING]" : | |||||
severity == GTEST_ERROR ? "[ ERROR ]" : "[ FATAL ]"; | |||||
GetStream() << ::std::endl << marker << " " | |||||
<< FormatFileLocation(file, line).c_str() << ": "; | |||||
} | |||||
// Flushes the buffers and, if severity is GTEST_FATAL, aborts the program. | |||||
GTestLog::~GTestLog() { | |||||
GetStream() << ::std::endl; | |||||
if (severity_ == GTEST_FATAL) { | |||||
fflush(stderr); | |||||
posix::Abort(); | |||||
} | |||||
} | |||||
// Disable Microsoft deprecation warnings for POSIX functions called from | |||||
// this class (creat, dup, dup2, and close) | |||||
GTEST_DISABLE_MSC_DEPRECATED_PUSH_() | |||||
#if GTEST_HAS_STREAM_REDIRECTION | |||||
// Object that captures an output stream (stdout/stderr). | |||||
class CapturedStream { | |||||
public: | |||||
// The ctor redirects the stream to a temporary file. | |||||
explicit CapturedStream(int fd) : fd_(fd), uncaptured_fd_(dup(fd)) { | |||||
# if GTEST_OS_WINDOWS | |||||
char temp_dir_path[MAX_PATH + 1] = { '\0' }; // NOLINT | |||||
char temp_file_path[MAX_PATH + 1] = { '\0' }; // NOLINT | |||||
::GetTempPathA(sizeof(temp_dir_path), temp_dir_path); | |||||
const UINT success = ::GetTempFileNameA(temp_dir_path, | |||||
"gtest_redir", | |||||
0, // Generate unique file name. | |||||
temp_file_path); | |||||
GTEST_CHECK_(success != 0) | |||||
<< "Unable to create a temporary file in " << temp_dir_path; | |||||
const int captured_fd = creat(temp_file_path, _S_IREAD | _S_IWRITE); | |||||
GTEST_CHECK_(captured_fd != -1) << "Unable to open temporary file " | |||||
<< temp_file_path; | |||||
filename_ = temp_file_path; | |||||
# else | |||||
// There's no guarantee that a test has write access to the current | |||||
// directory, so we create the temporary file in the /tmp directory | |||||
// instead. We use /tmp on most systems, and /sdcard on Android. | |||||
// That's because Android doesn't have /tmp. | |||||
# if GTEST_OS_LINUX_ANDROID | |||||
// Note: Android applications are expected to call the framework's | |||||
// Context.getExternalStorageDirectory() method through JNI to get | |||||
// the location of the world-writable SD Card directory. However, | |||||
// this requires a Context handle, which cannot be retrieved | |||||
// globally from native code. Doing so also precludes running the | |||||
// code as part of a regular standalone executable, which doesn't | |||||
// run in a Dalvik process (e.g. when running it through 'adb shell'). | |||||
// | |||||
// The location /sdcard is directly accessible from native code | |||||
// and is the only location (unofficially) supported by the Android | |||||
// team. It's generally a symlink to the real SD Card mount point | |||||
// which can be /mnt/sdcard, /mnt/sdcard0, /system/media/sdcard, or | |||||
// other OEM-customized locations. Never rely on these, and always | |||||
// use /sdcard. | |||||
char name_template[] = "/sdcard/gtest_captured_stream.XXXXXX"; | |||||
# else | |||||
char name_template[] = "/tmp/captured_stream.XXXXXX"; | |||||
# endif // GTEST_OS_LINUX_ANDROID | |||||
const int captured_fd = mkstemp(name_template); | |||||
filename_ = name_template; | |||||
# endif // GTEST_OS_WINDOWS | |||||
fflush(NULL); | |||||
dup2(captured_fd, fd_); | |||||
close(captured_fd); | |||||
} | |||||
~CapturedStream() { | |||||
remove(filename_.c_str()); | |||||
} | |||||
std::string GetCapturedString() { | |||||
if (uncaptured_fd_ != -1) { | |||||
// Restores the original stream. | |||||
fflush(NULL); | |||||
dup2(uncaptured_fd_, fd_); | |||||
close(uncaptured_fd_); | |||||
uncaptured_fd_ = -1; | |||||
} | |||||
FILE* const file = posix::FOpen(filename_.c_str(), "r"); | |||||
const std::string content = ReadEntireFile(file); | |||||
posix::FClose(file); | |||||
return content; | |||||
} | |||||
private: | |||||
const int fd_; // A stream to capture. | |||||
int uncaptured_fd_; | |||||
// Name of the temporary file holding the stderr output. | |||||
::std::string filename_; | |||||
GTEST_DISALLOW_COPY_AND_ASSIGN_(CapturedStream); | |||||
}; | |||||
GTEST_DISABLE_MSC_DEPRECATED_POP_() | |||||
static CapturedStream* g_captured_stderr = NULL; | |||||
static CapturedStream* g_captured_stdout = NULL; | |||||
// Starts capturing an output stream (stdout/stderr). | |||||
static void CaptureStream(int fd, const char* stream_name, | |||||
CapturedStream** stream) { | |||||
if (*stream != NULL) { | |||||
GTEST_LOG_(FATAL) << "Only one " << stream_name | |||||
<< " capturer can exist at a time."; | |||||
} | |||||
*stream = new CapturedStream(fd); | |||||
} | |||||
// Stops capturing the output stream and returns the captured string. | |||||
static std::string GetCapturedStream(CapturedStream** captured_stream) { | |||||
const std::string content = (*captured_stream)->GetCapturedString(); | |||||
delete *captured_stream; | |||||
*captured_stream = NULL; | |||||
return content; | |||||
} | |||||
// Starts capturing stdout. | |||||
void CaptureStdout() { | |||||
CaptureStream(kStdOutFileno, "stdout", &g_captured_stdout); | |||||
} | |||||
// Starts capturing stderr. | |||||
void CaptureStderr() { | |||||
CaptureStream(kStdErrFileno, "stderr", &g_captured_stderr); | |||||
} | |||||
// Stops capturing stdout and returns the captured string. | |||||
std::string GetCapturedStdout() { | |||||
return GetCapturedStream(&g_captured_stdout); | |||||
} | |||||
// Stops capturing stderr and returns the captured string. | |||||
std::string GetCapturedStderr() { | |||||
return GetCapturedStream(&g_captured_stderr); | |||||
} | |||||
#endif // GTEST_HAS_STREAM_REDIRECTION | |||||
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; | |||||
} | |||||
#if GTEST_HAS_DEATH_TEST | |||||
static const std::vector<std::string>* g_injected_test_argvs = NULL; // Owned. | |||||
std::vector<std::string> GetInjectableArgvs() { | |||||
if (g_injected_test_argvs != NULL) { | |||||
return *g_injected_test_argvs; | |||||
} | |||||
return GetArgvs(); | |||||
} | |||||
void SetInjectableArgvs(const std::vector<std::string>* new_argvs) { | |||||
if (g_injected_test_argvs != new_argvs) delete g_injected_test_argvs; | |||||
g_injected_test_argvs = new_argvs; | |||||
} | |||||
void SetInjectableArgvs(const std::vector<std::string>& new_argvs) { | |||||
SetInjectableArgvs( | |||||
new std::vector<std::string>(new_argvs.begin(), new_argvs.end())); | |||||
} | |||||
#if GTEST_HAS_GLOBAL_STRING | |||||
void SetInjectableArgvs(const std::vector< ::string>& new_argvs) { | |||||
SetInjectableArgvs( | |||||
new std::vector<std::string>(new_argvs.begin(), new_argvs.end())); | |||||
} | |||||
#endif // GTEST_HAS_GLOBAL_STRING | |||||
void ClearInjectableArgvs() { | |||||
delete g_injected_test_argvs; | |||||
g_injected_test_argvs = NULL; | |||||
} | |||||
#endif // GTEST_HAS_DEATH_TEST | |||||
#if GTEST_OS_WINDOWS_MOBILE | |||||
namespace posix { | |||||
void Abort() { | |||||
DebugBreak(); | |||||
TerminateProcess(GetCurrentProcess(), 1); | |||||
} | |||||
} // namespace posix | |||||
#endif // GTEST_OS_WINDOWS_MOBILE | |||||
// Returns the name of the environment variable corresponding to the | |||||
// given flag. For example, FlagToEnvVar("foo") will return | |||||
// "GTEST_FOO" in the open-source version. | |||||
static std::string FlagToEnvVar(const char* flag) { | |||||
const std::string full_flag = | |||||
(Message() << GTEST_FLAG_PREFIX_ << flag).GetString(); | |||||
Message env_var; | |||||
for (size_t i = 0; i != full_flag.length(); i++) { | |||||
env_var << ToUpper(full_flag.c_str()[i]); | |||||
} | |||||
return env_var.GetString(); | |||||
} | |||||
// Parses 'str' for a 32-bit signed integer. If successful, writes | |||||
// the result to *value and returns true; otherwise leaves *value | |||||
// unchanged and returns false. | |||||
bool ParseInt32(const Message& src_text, const char* str, Int32* value) { | |||||
// Parses the environment variable as a decimal integer. | |||||
char* end = NULL; | |||||
const long long_value = strtol(str, &end, 10); // NOLINT | |||||
// Has strtol() consumed all characters in the string? | |||||
if (*end != '\0') { | |||||
// No - an invalid character was encountered. | |||||
Message msg; | |||||
msg << "WARNING: " << src_text | |||||
<< " is expected to be a 32-bit integer, but actually" | |||||
<< " has value \"" << str << "\".\n"; | |||||
printf("%s", msg.GetString().c_str()); | |||||
fflush(stdout); | |||||
return false; | |||||
} | |||||
// Is the parsed value in the range of an Int32? | |||||
const Int32 result = static_cast<Int32>(long_value); | |||||
if (long_value == LONG_MAX || long_value == LONG_MIN || | |||||
// The parsed value overflows as a long. (strtol() returns | |||||
// LONG_MAX or LONG_MIN when the input overflows.) | |||||
result != long_value | |||||
// The parsed value overflows as an Int32. | |||||
) { | |||||
Message msg; | |||||
msg << "WARNING: " << src_text | |||||
<< " is expected to be a 32-bit integer, but actually" | |||||
<< " has value " << str << ", which overflows.\n"; | |||||
printf("%s", msg.GetString().c_str()); | |||||
fflush(stdout); | |||||
return false; | |||||
} | |||||
*value = result; | |||||
return true; | |||||
} | |||||
// Reads and returns the Boolean environment variable corresponding to | |||||
// the given flag; if it's not set, returns default_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); | |||||
#else | |||||
const std::string env_var = FlagToEnvVar(flag); | |||||
const char* const string_value = posix::GetEnv(env_var.c_str()); | |||||
return string_value == NULL ? | |||||
default_value : strcmp(string_value, "0") != 0; | |||||
#endif // defined(GTEST_GET_BOOL_FROM_ENV_) | |||||
} | |||||
// Reads and returns a 32-bit integer stored in the environment | |||||
// 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); | |||||
#else | |||||
const std::string env_var = FlagToEnvVar(flag); | |||||
const char* const string_value = posix::GetEnv(env_var.c_str()); | |||||
if (string_value == NULL) { | |||||
// The environment variable is not set. | |||||
return default_value; | |||||
} | |||||
Int32 result = default_value; | |||||
if (!ParseInt32(Message() << "Environment variable " << env_var, | |||||
string_value, &result)) { | |||||
printf("The default value %s is used.\n", | |||||
(Message() << default_value).GetString().c_str()); | |||||
fflush(stdout); | |||||
return default_value; | |||||
} | |||||
return result; | |||||
#endif // defined(GTEST_GET_INT32_FROM_ENV_) | |||||
} | |||||
// 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. | |||||
// Note that this is meant to be called at the call site so it does | |||||
// not check that the flag is 'output' | |||||
// In essence this checks an env variable called XML_OUTPUT_FILE | |||||
// and if it is set we prepend "xml:" to its value, if it not set we return "" | |||||
std::string OutputFlagAlsoCheckEnvVar(){ | |||||
std::string default_value_for_output_flag = ""; | |||||
const char* xml_output_file_env = posix::GetEnv("XML_OUTPUT_FILE"); | |||||
if (NULL != xml_output_file_env) { | |||||
default_value_for_output_flag = std::string("xml:") + xml_output_file_env; | |||||
} | |||||
return default_value_for_output_flag; | |||||
} | |||||
// 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) { | |||||
#if defined(GTEST_GET_STRING_FROM_ENV_) | |||||
return GTEST_GET_STRING_FROM_ENV_(flag, default_value); | |||||
#else | |||||
const std::string env_var = FlagToEnvVar(flag); | |||||
const char* const value = posix::GetEnv(env_var.c_str()); | |||||
return value == NULL ? default_value : value; | |||||
#endif // defined(GTEST_GET_STRING_FROM_ENV_) | |||||
} | |||||
} // namespace internal | |||||
} // namespace testing |