tmp/tmpv2w3nzo7/{from.md → to.md}
RENAMED
|
@@ -0,0 +1,72 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
##### General <a id="thread.lock.unique.general">[[thread.lock.unique.general]]</a>
|
| 2 |
+
|
| 3 |
+
``` cpp
|
| 4 |
+
namespace std {
|
| 5 |
+
template<class Mutex>
|
| 6 |
+
class unique_lock {
|
| 7 |
+
public:
|
| 8 |
+
using mutex_type = Mutex;
|
| 9 |
+
|
| 10 |
+
// [thread.lock.unique.cons], construct/copy/destroy
|
| 11 |
+
unique_lock() noexcept;
|
| 12 |
+
explicit unique_lock(mutex_type& m);
|
| 13 |
+
unique_lock(mutex_type& m, defer_lock_t) noexcept;
|
| 14 |
+
unique_lock(mutex_type& m, try_to_lock_t);
|
| 15 |
+
unique_lock(mutex_type& m, adopt_lock_t);
|
| 16 |
+
template<class Clock, class Duration>
|
| 17 |
+
unique_lock(mutex_type& m, const chrono::time_point<Clock, Duration>& abs_time);
|
| 18 |
+
template<class Rep, class Period>
|
| 19 |
+
unique_lock(mutex_type& m, const chrono::duration<Rep, Period>& rel_time);
|
| 20 |
+
~unique_lock();
|
| 21 |
+
|
| 22 |
+
unique_lock(const unique_lock&) = delete;
|
| 23 |
+
unique_lock& operator=(const unique_lock&) = delete;
|
| 24 |
+
|
| 25 |
+
unique_lock(unique_lock&& u) noexcept;
|
| 26 |
+
unique_lock& operator=(unique_lock&& u);
|
| 27 |
+
|
| 28 |
+
// [thread.lock.unique.locking], locking
|
| 29 |
+
void lock();
|
| 30 |
+
bool try_lock();
|
| 31 |
+
|
| 32 |
+
template<class Rep, class Period>
|
| 33 |
+
bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
|
| 34 |
+
template<class Clock, class Duration>
|
| 35 |
+
bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time);
|
| 36 |
+
|
| 37 |
+
void unlock();
|
| 38 |
+
|
| 39 |
+
// [thread.lock.unique.mod], modifiers
|
| 40 |
+
void swap(unique_lock& u) noexcept;
|
| 41 |
+
mutex_type* release() noexcept;
|
| 42 |
+
|
| 43 |
+
// [thread.lock.unique.obs], observers
|
| 44 |
+
bool owns_lock() const noexcept;
|
| 45 |
+
explicit operator bool () const noexcept;
|
| 46 |
+
mutex_type* mutex() const noexcept;
|
| 47 |
+
|
| 48 |
+
private:
|
| 49 |
+
mutex_type* pm; // exposition only
|
| 50 |
+
bool owns; // exposition only
|
| 51 |
+
};
|
| 52 |
+
}
|
| 53 |
+
```
|
| 54 |
+
|
| 55 |
+
An object of type `unique_lock` controls the ownership of a lockable
|
| 56 |
+
object within a scope. Ownership of the lockable object may be acquired
|
| 57 |
+
at construction or after construction, and may be transferred, after
|
| 58 |
+
acquisition, to another `unique_lock` object. Objects of type
|
| 59 |
+
`unique_lock` are not copyable but are movable. The behavior of a
|
| 60 |
+
program is undefined if the contained pointer `pm` is not null and the
|
| 61 |
+
lockable object pointed to by `pm` does not exist for the entire
|
| 62 |
+
remaining lifetime [[basic.life]] of the `unique_lock` object. The
|
| 63 |
+
supplied `Mutex` type shall meet the *Cpp17BasicLockable* requirements
|
| 64 |
+
[[thread.req.lockable.basic]].
|
| 65 |
+
|
| 66 |
+
[*Note 1*: `unique_lock<Mutex>` meets the *Cpp17BasicLockable*
|
| 67 |
+
requirements. If `Mutex` meets the *Cpp17Lockable* requirements
|
| 68 |
+
[[thread.req.lockable.req]], `unique_lock<Mutex>` also meets the
|
| 69 |
+
*Cpp17Lockable* requirements; if `Mutex` meets the *Cpp17TimedLockable*
|
| 70 |
+
requirements [[thread.req.lockable.timed]], `unique_lock<Mutex>` also
|
| 71 |
+
meets the *Cpp17TimedLockable* requirements. — *end note*]
|
| 72 |
+
|