本文整理汇总了Java中org.antlr.misc.Barrier类的典型用法代码示例。如果您正苦于以下问题：Java Barrier类的具体用法？Java Barrier怎么用？Java Barrier使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
Barrier类属于org.antlr.misc包，在下文中一共展示了Barrier类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: NFAConversionThread
import org.antlr.misc.Barrier; //导入依赖的package包/类
public NFAConversionThread(Grammar grammar,
Barrier barrier,
int i,
int j)
{
this.grammar = grammar;
this.barrier = barrier;
this.i = i;
this.j = j;
}
示例2: createLookaheadDFAs
import org.antlr.misc.Barrier; //导入依赖的package包/类
/** For each decision in this grammar, compute a single DFA using the
* NFA states associated with the decision. The DFA construction
* determines whether or not the alternatives in the decision are
* separable using a regular lookahead language.
*
* Store the lookahead DFAs in the AST created from the user's grammar
* so the code generator or whoever can easily access it.
*
* This is a separate method because you might want to create a
* Grammar without doing the expensive analysis.
*/
public void createLookaheadDFAs() {
if ( nfa==null ) {
createNFAs();
}
long start = System.currentTimeMillis();
//System.out.println("### create DFAs");
int numDecisions = getNumberOfDecisions();
if ( NFAToDFAConverter.SINGLE_THREADED_NFA_CONVERSION ) {
for (int decision=1; decision<=numDecisions; decision++) {
NFAState decisionStartState = getDecisionNFAStartState(decision);
if ( !externalAnalysisAbort && decisionStartState.getNumberOfTransitions()>1 ) {
createLookaheadDFA(decision);
}
}
}
else {
ErrorManager.info("two-threaded DFA conversion");
// create a barrier expecting n DFA and this main creation thread
Barrier barrier = new Barrier(3);
// assume 2 CPU for now
int midpoint = numDecisions/2;
NFAConversionThread t1 =
new NFAConversionThread(this, barrier, 1, midpoint);
new Thread(t1).start();
if ( midpoint == (numDecisions/2) ) {
midpoint++;
}
NFAConversionThread t2 =
new NFAConversionThread(this, barrier, midpoint, numDecisions);
new Thread(t2).start();
// wait for these two threads to finish
try {
barrier.waitForRelease();
}
catch(InterruptedException e) {
ErrorManager.internalError("what the hell? DFA interruptus", e);
}
}
long stop = System.currentTimeMillis();
DFACreationWallClockTimeInMS = stop - start;
// indicate that we've finished building DFA (even if #decisions==0)
allDecisionDFACreated = true;
}