Unblock a thread that's waiting on a condition variable
#include <pthread.h> int pthread_cond_signal( pthread_cond_t* cond );
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The pthread_cond_signal() function unblocks the highest priority thread that's waiting on the condition variable, cond.
If more than one thread at the highest priority is waiting, pthread_cond_signal() unblocks the one that has been waiting the longest.
POSIX 1003.1 THR
pthread_cond_broadcast(), pthread_cond_wait(), SyncCondvarSignal().
Processes and Threads chapter of Getting Started with QNX Neutrino