An instance of std::thread::id
identifies a particular thread of
execution.
class thread::id { public: id(); }; bool operator==(thread::id x, thread::id y); bool operator!=(thread::id x, thread::id y); bool operator<(thread::id x, thread::id y); bool operator<=(thread::id x, thread::id y); bool operator>(thread::id x, thread::id y); bool operator>=(thread::id x, thread::id y); template<typename charT, typename traits> basic_ostream<charT, traits>& operator<< ( basic_ostream<charT, traits>&& out, thread::id id);
The std::thread::id
value that identifies a particular thread of execution shall be distinct
from the value of a default-constructed std::thread::id
instance, and from any value
that represents another thread of execution.
The std::thread::id
values for particular threads are not predictable and may vary between
executions of the same program.
std::thread::id
is CopyConstructible
and CopyAssignable
, so
instances of std::thread::id
may be freely copied and
assigned.
#include <thread>