本文整理汇总了Scala中java.nio.channels.FileChannel.MapMode类的典型用法代码示例。如果您正苦于以下问题：Scala MapMode类的具体用法？Scala MapMode怎么用？Scala MapMode使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了MapMode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Scala代码示例。
示例1: TorrentFileStream
//设置package包名称以及导入依赖的类
package com.spooky.bencode
import scala.collection.JavaConversions._
import java.io.File
import java.nio.channels.FileChannel
import java.nio.file.StandardOpenOption
import java.nio.channels.FileChannel.MapMode
import java.nio.ByteBuffer
import scala.Range
class TorrentFileStream(channel: FileChannel, buffer: ByteBuffer) extends BStream {
def headChar: Char = buffer.duplicate.get.asInstanceOf[Char]
def headByte: Byte = buffer.duplicate.get
def tail = {
val tail = buffer.duplicate
tail.get
new TorrentFileStream(channel, tail)
}
def isEmpty = !buffer.hasRemaining
def close: Unit = channel.close
override def toString: String = {
val buff = buffer.duplicate
val builder = StringBuilder.newBuilder
while (buff.hasRemaining) {
if (builder.endsWith("6:pieces")) {
val bah = StringBuilder.newBuilder
var chaaa = buff.get.asInstanceOf[Char]
while ("0123456789".contains(chaaa)) {
bah.append(chaaa)
chaaa = buff.get.asInstanceOf[Char]
}
var i = bah.toString.toInt
while(i >= 0){
buff.get
i = i-1
}
}
builder += buff.get.asInstanceOf[Char]
}
builder.toString
}
}
object TorrentFileStream {
def apply(torrent: File) = {
val channel = FileChannel.open(torrent.toPath, StandardOpenOption.READ)
new TorrentFileStream(channel, channel.map(MapMode.READ_ONLY, 0, channel.size).load)
}
} 示例2: ImmutableTest
//设置package包名称以及导入依赖的类
package com.github.sorhus.webalytics.cruft
import java.io.{DataOutputStream, File, FileOutputStream, RandomAccessFile}
import java.nio.channels.FileChannel.MapMode
import org.roaringbitmap.RoaringBitmap
import org.roaringbitmap.buffer.ImmutableRoaringBitmap
object ImmutableTest extends App {
val outFile = new File(args(0))
outFile.createNewFile()
val fos = new FileOutputStream(outFile)
val dos = new DataOutputStream(fos)
val x = RoaringBitmap.bitmapOf(1,3,5)
x.runOptimize()
x.serialize(dos)
dos.close()
val inFile = new RandomAccessFile(args(0), "r")
val memoryMapped = inFile.getChannel.map(MapMode.READ_ONLY, 0, inFile.length())
val bb = memoryMapped.slice()
val bitset = new ImmutableRoaringBitmap(bb)
println(ImmutableRoaringBitmap.and(bitset,bitset).getCardinality)
println(ImmutableRoaringBitmap.andCardinality(bitset,bitset))
inFile.close()
}