62 : _M_device(0), _M_owns(
false)
86 template<
typename _Clock,
typename _Duration>
90 _M_owns(_M_device->try_lock_until(
__atime))
93 template<
typename _Rep,
typename _Period>
97 _M_owns(_M_device->try_lock_for(
__rtime))
110 : _M_device(
__u._M_device), _M_owns(
__u._M_owns)
133 __throw_system_error(
int(errc::operation_not_permitted));
135 __throw_system_error(
int(errc::resource_deadlock_would_occur));
147 __throw_system_error(
int(errc::operation_not_permitted));
149 __throw_system_error(
int(errc::resource_deadlock_would_occur));
152 _M_owns = _M_device->try_lock();
157 template<
typename _Clock,
typename _Duration>
162 __throw_system_error(
int(errc::operation_not_permitted));
164 __throw_system_error(
int(errc::resource_deadlock_would_occur));
167 _M_owns = _M_device->try_lock_until(
__atime);
172 template<
typename _Rep,
typename _Period>
177 __throw_system_error(
int(errc::operation_not_permitted));
179 __throw_system_error(
int(errc::resource_deadlock_would_occur));
182 _M_owns = _M_device->try_lock_for(
__rtime);
191 __throw_system_error(
int(errc::operation_not_permitted));
202 std::swap(_M_device,
__u._M_device);
203 std::swap(_M_owns,
__u._M_owns);
209 mutex_type*
__ret = _M_device;
216 owns_lock()
const noexcept
219 explicit operator bool()
const noexcept
220 {
return owns_lock(); }
223 mutex()
const noexcept
224 {
return _M_device; }
227 mutex_type* _M_device;