chapter  11
STU SING EVENT F LAGS
YNCHRONIZATION OF HREADS ROUPS
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Event flags provide a powerful tool for thread synchronization. Event flags can be set or cleared

by any thread and can be inspected by any thread. Threads can suspend while waiting for some combination of event flags to be set. Each event flag is represented by a single bit. Event flags are arranged in groups of 32 as illustrated by Figure 11.1.