So, is it thread-safety work: 1) On startup I call to event_init() which give me back an "event base" bool SocketManager::Init() {     m_base = (event_base*)event_init();     return (m_base != NULL); } 2) I run libevent mainloop in new thread with this "event base" void SocketRunnable::ThreadProc() {   //     while(!g_bExit)     {        //        // ....        //         if( event_base_loop(m_base, 0) == -1 )         {                 outError("<Socket manager> Critical error is occured in event_loot. Exit.");                 return;         }     } } This thread handles the listen socket; it calls accept() and SocketManager::AddSocket() to add new socket event loop bool SocketManager::AddSocket(SocketBase* pSocket) {     event_set(&pSocket->m_ev_read, (int)pSocket->GetHandle(), EV_READ | EV_PERSIST, io_handle_read, pSocket);     event_base_set(m_base, &pSocket->m_ev_read);         if(event_add(&pSocket->m_ev_read, &tv) == -1)         return false;     event_set(&pSocket->m_ev_write, (int)pSocket->GetHandle(), EV_WRITE, io_handle_write, pSocket);     event_base_set(m_base, &pSocket->m_ev_write);     return true; } 3) After "event_base_set(m_base, &pSocket->m_ev_write);" if i want to send from another thread, i can call smth like this: bool Socket::Send(IN const uint8* pSrc, INOUT uint32 unSize) {     //some checks and output buffer operation     return (event_add(&m_ev_write, NULL) != -1); } and on write callback i send data directly in socket: void io_handle_write(int fd, short event, void *arg) {     send(fd, ........); } am i right or wrong? Thanks. P.S. Sorry for bad English.. Best regards, Maksim Lapo