Peter Dimov wrote: [...]
I have PS/2 Model 80 (with 64 Megs) "tank" at home (in addition to A31p ThinkPad ;-) ).
He he. OK, if you had CAS (PS/2 Model 70 486) how would you do it?
Ok, you owe me a "Blue Lightening" processor upgrade. ;-) How about void lock() throw() { while (int lock_status = m_lock_status.cas(0, 1, msync::ddacq)) if (lock_status < 0 || m_lock_status.cas(1,-1, msync::ddacq)) m_retry_event.wait(); } bool trylock() throw() { return !m_lock_status.cas(0, 1, msync::acq); } bool timedlock(absolute_timeout const & timeout) throw() { while (int lock_status = m_lock_status.cas(0, 1, msync::ddacq)) if (lock_status < 0 || m_lock_status.cas(1,-1, msync::ddacq)) if (!m_retry_event.timedwait(timeout)) m_retry_event.set(), return !m_lock_status.swap(1, msync::acq); return true; } void unlock() throw() { if (m_lock_status.swap(0, msync::rel) < 0) m_retry_event.set(); } <?> regards, alexander.