Unique identifier for a thread.
class thread::id;
#include "tbb/compat/thread"
A thread::id is an identifier value for a thread that remains unique over the thread's lifetime. A special value thread::id() represents no thread of execution. The instances are totally ordered.
namespace std { class thread::id { public: id(); template<typename charT, typename traits> friend std::basic_ostream<charT, traits>& operator<< (std::basic_ostream<charT, traits> &out, thread::id id) friend bool operator==(thread::id x, thread::id y); friend bool operator!=(thread::id x, thread::id y); friend bool operator<(thread::id x, thread::id y); friend bool operator<=(thread::id x, thread::id y); friend bool operator>(thread::id x, thread::id y); friend bool operator>=(thread::id x, thread::id y); friend size_t tbb_hasher( const thread::id& id ); }; }