本文整理汇总了C++中std::atomic_flag::test_and_set方法的典型用法代码示例。如果您正苦于以下问题:C++ atomic_flag::test_and_set方法的具体用法?C++ atomic_flag::test_and_set怎么用?C++ atomic_flag::test_and_set使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类std::atomic_flag
的用法示例。
在下文中一共展示了atomic_flag::test_and_set方法的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: initializeNotifier
void* initializeNotifier(void (*process)(uint64_t, void*), void *param, int32_t *status)
{
if (!process) {
*status = NULL_PARAMETER;
return nullptr;
}
if (!notifierAtexitRegistered.test_and_set())
std::atexit(cleanupNotifierAtExit);
if (notifierRefCount.fetch_add(1) == 0) {
std::lock_guard<priority_mutex> sync(notifierInterruptMutex);
// create manager and alarm if not already created
if (!notifierManager) {
notifierManager = new tInterruptManager(1 << kTimerInterruptNumber, false, status);
notifierManager->registerHandler(alarmCallback, NULL, status);
notifierManager->enable(status);
}
if (!notifierAlarm) notifierAlarm = tAlarm::create(status);
}
std::lock_guard<priority_recursive_mutex> sync(notifierMutex);
// create notifier structure and add to list
Notifier* notifier = new Notifier();
notifier->prev = nullptr;
notifier->next = notifiers;
if (notifier->next) notifier->next->prev = notifier;
notifier->param = param;
notifier->process = process;
notifiers = notifier;
return notifier;
}
示例2: Error
void Sys::Error(Str::StringRef message)
{
// Only try sending an ErrorMsg once
static std::atomic_flag errorEntered;
if (!errorEntered.test_and_set()) {
// Disable checks for sending sync messages when handling async messages.
// At this point we don't really care since this is an error.
VM::rootChannel.canSendSyncMsg = true;
// Try to tell the engine about the error, but ignore errors doing so.
try {
VM::SendMsg<VM::ErrorMsg>(message);
} catch (...) {}
}
#ifdef BUILD_VM_IN_PROCESS
// Then engine will close the root socket when it wants us to exit, which
// will trigger an error in the IPC functions. If we reached this point then
// we try to exit the thread semi-cleanly by throwing an exception.
throw ExitException();
#else
// The SendMsg should never return since the engine should kill our process.
// Just in case it doesn't, exit here.
_exit(255);
#endif
}
示例3: append_number
void append_number(int x)
{
while (lock_stream.test_and_set()) {
}
stream << "thread #" << x << '\n';
lock_stream.clear();
}
示例4: lock
void lock() {
while (m_lock.test_and_set(std::memory_order_acquire)) {
//spin
}
// test_and_set, atomically sets the flag to true and obtains its previous value
// if value is false, set to true, return false, no spin, acquire lock.
// if value is true, return true, spin...
}
示例5: f
void f(int n)
{
while(lock.test_and_set(std::memory_order_acquire)){
cout<<"waiting from thread "<< n <<endl;
}
cout<<"thread "<< n <<"starts working!"<<endl;
}
示例6: runtime_error
Terminator::Terminator() {
static std::atomic_flag created = ATOMIC_FLAG_INIT;
if (created.test_and_set()) {
throw std::runtime_error("Terminator may be crated exactly once.");
}
std::atomic_init(&this->should_terminate_, false);
signal_handler_ = SpawnThread(this);
}
示例7: main
int main()
{
lock.test_and_set();
std::thread t1(f,1);
std::thread t2(g,2);
t1.join();
t2.join();
}
示例8: test
void test()
{
lock.test_and_set();
thread t1(f, 1);
thread t2(g, 2);
t1.join();
usleep(100); //posix unix
t2.join();
}
示例9: step
void step()
{
while(lock_vis.test_and_set()){}
for(auto i = elements->begin(); i != elements->end(); ++i)
{
if(i->step())
{
i = elements->erase(i);
--i;
}
}
lock_vis.clear();
}
示例10: _tWinMain
int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
auto ev = OpenEvent(EVENT_ALL_ACCESS, FALSE, _T("B_ready_mutex"));
SetEvent(ev);
while(working.test_and_set())
{
std::this_thread::sleep_for(std::chrono::milliseconds(1));
}
::MessageBox(NULL, _T("call succeeded"), _T("Remote Call"), MB_OK);
CloseHandle(ev);
return 0;
}
示例11: count1m
void count1m(int id)
{
while (!ready) {
std::this_thread::yield();
} // 等待主线程中设置 ready 为 true.
for (int i = 0; i < 1000000; ++i) {
} // 计数.
// 如果某个线程率先执行完上面的计数过程,则输出自己的 ID.
// 此后其他线程执行 test_and_set 是 if 语句判断为 false,
// 因此不会输出自身 ID.
if (!winner.test_and_set()) {
std::cout << "thread #" << id << " won!\n";
}
};
示例12: main
int main(int, char**)
{
#if TEST_STD_VER >= 11
assert(global.test_and_set() == 1);
#endif
{
std::atomic_flag f(false);
assert(f.test_and_set() == 0);
}
{
std::atomic_flag f(true);
assert(f.test_and_set() == 1);
}
return 0;
}
示例13: robotPoseCallback
void robotPoseCallback(const wrecs_msgs::sf_state_est::ConstPtr& msg)
{
if (!lock.test_and_set()) {
for (int i = 0; i < 30; i++) {
stored_msg.Joints[i] = msg->joints[i];
}
for (int i = 0; i < 3; i++) {
stored_msg.ComEst[i] = msg->com_est[i];
}
for (int i = 0; i < 2; i++) {
stored_msg.CopEst[i] = msg->cop_est[i];
}
stored_msg.FootBF0.X = msg->foot_b_F[0].x;
stored_msg.FootBF0.Y = msg->foot_b_F[0].y;
stored_msg.FootBF0.Z = msg->foot_b_F[0].z;
stored_msg.FootBF1.X = msg->foot_b_F[1].x;
stored_msg.FootBF1.Y = msg->foot_b_F[1].y;
stored_msg.FootBF1.Z = msg->foot_b_F[1].z;
stored_msg.SdfMidFoot0.Position.X = msg->sdf_mid_foot[0].position.x;
stored_msg.SdfMidFoot0.Position.Y = msg->sdf_mid_foot[0].position.y;
stored_msg.SdfMidFoot0.Position.Z = msg->sdf_mid_foot[0].position.z;
stored_msg.SdfMidFoot0.Orientation.W = msg->sdf_mid_foot[0].orientation.w;
stored_msg.SdfMidFoot0.Orientation.X = msg->sdf_mid_foot[0].orientation.x;
stored_msg.SdfMidFoot0.Orientation.Y = msg->sdf_mid_foot[0].orientation.y;
stored_msg.SdfMidFoot0.Orientation.Z = msg->sdf_mid_foot[0].orientation.z;
stored_msg.SdfMidFoot1.Position.X = msg->sdf_mid_foot[1].position.x;
stored_msg.SdfMidFoot1.Position.Y = msg->sdf_mid_foot[1].position.y;
stored_msg.SdfMidFoot1.Position.Z = msg->sdf_mid_foot[1].position.z;
stored_msg.SdfMidFoot1.Orientation.W = msg->sdf_mid_foot[1].orientation.w;
stored_msg.SdfMidFoot1.Orientation.X = msg->sdf_mid_foot[1].orientation.x;
stored_msg.SdfMidFoot1.Orientation.Y = msg->sdf_mid_foot[1].orientation.y;
stored_msg.SdfMidFoot1.Orientation.Z = msg->sdf_mid_foot[1].orientation.z;
newMessageArrived = true;
lock.clear();
}
}
示例14: Update
/// <summary>
/// Updates the cover art.
/// </summary>
void Update() {
// Set while the updater thread is running.
static std::atomic_flag closed = ATOMIC_FLAG_INIT;
if (!closed.test_and_set()) {
std::thread([] () {
TextFunctions::_Update();
SendMessage(gLSModule.GetMessageWindow(), WindowMessages::WM_TEXTUPDATENOTIFY, 0, 0);
for (auto &coverArt : gCoverArt) {
coverArt.second.Update();
}
closed.clear();
}).detach();
}
}
示例15: sigint_handler
// CODETAG_IOR_SIGNALS
//++
// Details: The SIGINT signal is sent to a process by its controlling terminal
// when a
// user wishes to interrupt the process. This is typically initiated by
// pressing
// Control-C, but on some systems, the "delete" character or "break"
// key can be
// used.
// Be aware this function may be called on another thread besides the
// main thread.
// Type: Function.
// Args: vSigno - (R) Signal number.
// Return: None.
// Throws: None.
//--
void sigint_handler(int vSigno) {
#ifdef _WIN32 // Restore handler as it is not persistent on Windows
signal(SIGINT, sigint_handler);
#endif
static std::atomic_flag g_interrupt_sent = ATOMIC_FLAG_INIT;
CMIDriverMgr &rDriverMgr = CMIDriverMgr::Instance();
lldb::SBDebugger *pDebugger = rDriverMgr.DriverGetTheDebugger();
if (pDebugger != nullptr) {
if (!g_interrupt_sent.test_and_set()) {
pDebugger->DispatchInputInterrupt();
g_interrupt_sent.clear();
}
}
// Send signal to driver so that it can take suitable action
rDriverMgr.DeliverSignal(vSigno);
}