public void enterBarrier(int barrierNum, int threadNum) {
if (!active) {
throw new IllegalStateException(
"Parallel Region is not active, unable to enter/escape a barrier");
}
if (log.isDebugEnabled()) {
log.debug("OMP thread " + threadNum + " is entering barrier " + barrierNum);
}
if (barrierNum < 0) {
throw new IllegalArgumentException("Barrier number must be >= 0");
}
if (threadNum < 0 || threadNum > team.length - 1) {
throw new IllegalArgumentException(
"Thread with number " + threadNum + " not registered in this region");
}
OMPThreadBarrier barrier;
barrierLock.lock();
try {
barrier = barriers.get(barrierNum);
if (barrier == null) {
if (log.isDebugEnabled()) {
log.debug("OMP thread " + threadNum + " is the first to enter barrier " + barrierNum);
}
barrier = new OMPThreadBarrier(team.length);
barriers.put(barrierNum, barrier);
}
} finally {
barrierLock.unlock();
}
// this Java thread will wait
barrier.await(team[threadNum]);
}
public boolean escapeBarrier(int barrierNum, int threadNum) {
if (!active) {
throw new IllegalStateException(
"Parallel Region is not active, unable to enter/escape a barrier");
}
if (barrierNum < 1) {
throw new IllegalArgumentException("Barrier number must be > 0");
}
if (threadNum < 0 || threadNum > team.length - 1) {
throw new IllegalArgumentException(
"Thread with number " + threadNum + " not registered in this region");
}
OMPThreadBarrier barrier = barriers.get(barrierNum);
if (barrier == null) {
throw new IllegalArgumentException("No barrier with id " + barrierNum + " registered");
}
return barrier.release(threadNum);
}