Reference:
unlock
public void unlock()
This unlocks the mutex, waking up one thread (if any are sleeping).
Reference:
The Class Extensions.ConditionVar
This is one of our classes. It implements POSIX-style condition variables. Use only when
synchronized sections and wait/notify won't work.
condWait
public void condWait(Mutex m)
This causes the current thread to block until it is awakened by either a call to condSignal() or
by a spurious wakeup (not by interruption). It will release the mutex lock for the object as it goes
to sleep, and reacquire it before returning.
Reference:
condSignal condBroadcast
public void condSignal()
public void condBroadcast()
These cause (one/all) of the threads that are in a condWait() call to wake up and return.
Reference:
Summary
The main issue in writing MT programs is how to get threads to work together. Locks
(synchronized sections) and condition variables (wait/notify) are the fundamental building blocks
from which anything can be built. Although there are many nonintuitive aspects of
synchronization, most of them can be ignored, as things "just work."
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