std::thread::id

Member functions

id() noexcept; //default constructor

Constructs the thread::id value that represents all non-joinable threads.
thread::id objects are trivially copyable

Non-member function overloads

bool operator== (thread::id lhs, thread::id rhs) noexcept;
bool operator!= (thread::id lhs, thread::id rhs) noexcept;
bool operator< (thread::id lhs, thread::id rhs) noexcept;
bool operator<= (thread::id lhs, thread::id rhs) noexcept;
bool operator> (thread::id lhs, thread::id rhs) noexcept;
bool operator>= (thread::id lhs, thread::id rhs) noexcept;

Two thread::id object compare equal if they represent the same joinable thread, or if they both represent non-joinable threads.
The order established by relational operators is an implementation-defined stable total order, allowing its use as keys for associative containers.

template <class charT, class traits>
basic_ostream<chasrT, traits>& operator<< (basic_ostream<charT,traits>& os, thread::id id);

Inserts a textual representation of id into os (in an implementation-specific manner).
Inserting two thread::id object that compare equal, generates the same textual representation. Inserting different thread::id values generates different representations.

Non-member class specializations

template <class T> struct hash; //generic template declaration
template<> struct hash<thread::id>;

Unary function object class that defines the specialization of hash for objects of type thread::id (see hash).

See also

thread::get_id

Get thread id (public member function)

thread::joinable

Check if joinable (public member function)