62 typedef _Mutex mutex_type;
65 : _M_device(0), _M_owns(
false)
89 template<
typename _Clock,
typename _Duration>
93 _M_owns(_M_device->try_lock_until(__atime))
96 template<
typename _Rep,
typename _Period>
100 _M_owns(_M_device->try_lock_for(__rtime))
113 : _M_device(__u._M_device), _M_owns(__u._M_owns)
136 __throw_system_error(
int(errc::operation_not_permitted));
138 __throw_system_error(
int(errc::resource_deadlock_would_occur));
150 __throw_system_error(
int(errc::operation_not_permitted));
152 __throw_system_error(
int(errc::resource_deadlock_would_occur));
155 _M_owns = _M_device->try_lock();
160 template<
typename _Clock,
typename _Duration>
165 __throw_system_error(
int(errc::operation_not_permitted));
167 __throw_system_error(
int(errc::resource_deadlock_would_occur));
170 _M_owns = _M_device->try_lock_until(__atime);
175 template<
typename _Rep,
typename _Period>
180 __throw_system_error(
int(errc::operation_not_permitted));
182 __throw_system_error(
int(errc::resource_deadlock_would_occur));
185 _M_owns = _M_device->try_lock_for(__rtime);
194 __throw_system_error(
int(errc::operation_not_permitted));
212 mutex_type* __ret = _M_device;
219 owns_lock()
const noexcept
222 explicit operator bool()
const noexcept
223 {
return owns_lock(); }
226 mutex()
const noexcept
227 {
return _M_device; }
230 mutex_type* _M_device;