java.util.concurrent.Semaphore.availablePermits()方法的使用及代码示例

x33g5p2x  于2022-01-29 转载在 其他  
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本文整理了Java中java.util.concurrent.Semaphore.availablePermits()方法的一些代码示例,展示了Semaphore.availablePermits()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。Semaphore.availablePermits()方法的具体详情如下:
包路径:java.util.concurrent.Semaphore
类名称:Semaphore
方法名:availablePermits

Semaphore.availablePermits介绍

[英]Returns the current number of permits available in this semaphore.

This method is typically used for debugging and testing purposes.
[中]返回此信号量中当前可用的许可证数。
此方法通常用于调试和测试目的。

代码示例

代码示例来源:origin: resilience4j/resilience4j

/**
 * {@inheritDoc}
 */
@Override
public int getAvailablePermissions() {
  return semaphore.availablePermits();
}

代码示例来源:origin: resilience4j/resilience4j

@Override
  public int getAvailableConcurrentCalls() {
    return semaphore.availablePermits();
  }
}

代码示例来源:origin: twitter/distributedlog

@Override
  public Number getSample() {
    return null == semaphore ? 0 : concurrency - semaphore.availablePermits();
  }
});

代码示例来源:origin: wildfly/wildfly

@Override
public int getBalance() {
 return semaphore.availablePermits();
}

代码示例来源:origin: apache/geode

@Override
public String toString() {
 return "<InitialImageFlowControl for GII to " + target + " with " + permits.availablePermits()
   + " available permits>";
}

代码示例来源:origin: org.apache.hadoop/hadoop-common

/**
 * Size returns the sum of all sub-queue sizes, so it may be greater than
 * capacity.
 * Note: size provides no strict consistency, and should not be used to
 * control queue IO.
 */
@Override
public int size() {
 return semaphore.availablePermits();
}

代码示例来源:origin: voldemort/voldemort

public int availablePermits() {
  return this.scanPermits.availablePermits();
}

代码示例来源:origin: org.apache.hadoop/hadoop-common

/**
 * Get the number of permits available; guaranteed to be
 * {@code 0 <= availablePermits <= size}.
 * @return the number of permits available at the time of invocation.
 */
public int getAvailablePermits() {
 return queueingPermits.availablePermits();
}

代码示例来源:origin: wildfly/wildfly

public int getAvailableCount() {
  return semaphore.availablePermits();
}

代码示例来源:origin: Netflix/eureka

@Monitor(name = METRIC_REPLICATION_PREFIX + "pendingJobRequests", description = "Number of worker threads awaiting job assignment", type = DataSourceType.GAUGE)
public long getPendingJobRequests() {
  return singleItemWorkRequests.availablePermits() + batchWorkRequests.availablePermits();
}

代码示例来源:origin: apache/hive

LockHandleImpl(Connection conn, Statement stmt, ResultSet rs, String key, Semaphore derbySemaphore) {
 this.dbConn = conn;
 this.stmt = stmt;
 this.rs = rs;
 this.derbySemaphore = derbySemaphore;
 if(derbySemaphore != null) {
  //oterwise it may later release permit acquired by someone else
  assert derbySemaphore.availablePermits() == 0 : "Expected locked Semaphore";
 }
 keys.add(key);
}
void addKey(String key) {

代码示例来源:origin: pentaho/pentaho-kettle

@Override public synchronized void resume() {
 if ( paused.getAndSet( false ) ) {
  assert acceptingRowsSemaphore.availablePermits() == 0;
  acceptingRowsSemaphore.release();
 }
}

代码示例来源:origin: apache/flink

@VisibleForTesting
int getAvailablePermits() {
  return semaphore.availablePermits();
}

代码示例来源:origin: resilience4j/resilience4j

void refreshLimit() {
  int permissionsToRelease = this.rateLimiterConfig.get().getLimitForPeriod() - semaphore.availablePermits();
  semaphore.release(permissionsToRelease);
}

代码示例来源:origin: apache/incubator-pinot

private void checkStopResourceManager() {
  if (!isRunning && runningQueriesSemaphore.availablePermits() == numRunners) {
   resourceManager.stop();
  }
 }
}

代码示例来源:origin: apache/geode

private void abort() {
 if (!aborted.getAndSet(true)) {
  incMessagesInFlight(-(maxPermits - permits.availablePermits()));
  // Just in case java has issues with semaphores rolling over, set this
  // to half Integer.MAX_VALUE rather to release all of the waiters
  permits.release(Integer.MAX_VALUE / 2);
 }
}

代码示例来源:origin: apache/flink

@VisibleForTesting
  int getAcquiredPermits() {
    return config.getMaxConcurrentRequests() - semaphore.availablePermits();
  }
}

代码示例来源:origin: pentaho/pentaho-kettle

/**
 * Marks the source paused (if not already) and acquires the permit, which will cause acceptRows to block.
 */
@Override public synchronized void pause() {
 if ( !paused.getAndSet( true ) ) {
  try {
   assert acceptingRowsSemaphore.availablePermits() == 1;
   acceptingRowsSemaphore.acquire();
  } catch ( InterruptedException e ) {
   logChannel.logError( getString( PKG, "BlockingQueueStream.PauseInterrupt" ) );
  }
 }
}

代码示例来源:origin: pentaho/pentaho-kettle

@Test
@SuppressWarnings ( "unchecked" )
public void errorLoggedIfInterruptedInPause() throws InterruptedException {
 streamSource.acceptingRowsSemaphore = semaphore;
 when( semaphore.availablePermits() ).thenReturn( 1 );
 streamSource.logChannel = logChannel;
 doThrow( new InterruptedException( "interrupt" ) )
  .when( semaphore ).acquire();
 streamSource.pause();
 verify( logChannel ).logError( any() );
}

代码示例来源:origin: AsyncHttpClient/async-http-client

/**
 * {@inheritDoc}
 */
@Override
public <T> FilterContext<T> filter(FilterContext<T> ctx) throws FilterException {
 try {
  if (logger.isDebugEnabled()) {
   logger.debug("Current Throttling Status {}", available.availablePermits());
  }
  long startOfWait = System.currentTimeMillis();
  attemptConcurrencyPermitAcquistion(ctx);
  attemptRateLimitedPermitAcquistion(ctx, startOfWait);
 } catch (InterruptedException e) {
  throw new FilterException(String.format("Interrupted Request %s with AsyncHandler %s", ctx.getRequest(), ctx.getAsyncHandler()));
 }
 return new FilterContext.FilterContextBuilder<>(ctx)
     .asyncHandler(ReleasePermitOnComplete.wrap(ctx.getAsyncHandler(), available))
     .build();
}

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