/*
* Copyright (C) 2009 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.common.base;
import java.util.concurrent.TimeUnit;
/**
* @author Jesse Wilson
*/
class Platform {
private static final char[] CHAR_BUFFER = new char[1024];
static char[] charBufferFromThreadLocal() {
// ThreadLocal is not available to GWT, so we always reuse the same
// instance. It is always safe to return the same instance because
// javascript is single-threaded, and only used by blocks that doesn't
// involve async callbacks.
return CHAR_BUFFER;
}
static CharMatcher precomputeCharMatcher(CharMatcher matcher) {
// CharMatcher.precomputed() produces CharMatchers that are maybe a little
// faster (and that's debatable), but definitely more memory-hungry. We're
// choosing to turn .precomputed() into a no-op in GWT, because it doesn't
// seem to be a worthwhile tradeoff in a browser.
return matcher;
}
static long systemNanoTime() {
// System.nanoTime() is not available in GWT, so we get milliseconds
// and convert to nanos.
return TimeUnit.MILLISECONDS.toNanos(System.currentTimeMillis());
}
}