org.apache.sysds.runtime.controlprogram.caching

## Class LazyWriteBuffer

- java.lang.Object
- - org.apache.sysds.runtime.controlprogram.caching.LazyWriteBuffer

-     public class LazyWriteBuffer
      extends Object

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `static class` | `LazyWriteBuffer.RPolicy`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `LazyWriteBuffer()`

  - ### Method Summary

    All Methods Static Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static void` | `cleanup()`
    `static void` | `deleteBlock(String fname)`
    `static void` | `forceEviction()` Evicts all buffer pool entries.
    `static long` | `getCacheBlockSize(CacheBlock cb)`
    `static int` | `getQueueSize()`
    `static ExecutorService` | `getUtilThreadPool()`
    `static long` | `getWriteBufferFree()`
    `static long` | `getWriteBufferLimit()`
    `static long` | `getWriteBufferSize()`
    `static void` | `init()`
    `static void` | `printStatus(String position)` Print current status of buffer pool, including all entries.
    `static CacheBlock` | `readBlock(String fname, boolean matrix)`
    `static int` | `writeBlock(String fname, CacheBlock cb)`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### LazyWriteBuffer

          public LazyWriteBuffer()

  - ### Method Detail

    - #### writeBlock

          public static int writeBlock(String fname,
                                       CacheBlock cb)
                                throws IOException

      Throws:
        `IOException`

    - #### deleteBlock

          public static void deleteBlock(String fname)

    - #### readBlock

          public static CacheBlock readBlock(String fname,
                                             boolean matrix)
                                      throws IOException

      Throws:
        `IOException`

    - #### init

          public static void init()

    - #### cleanup

          public static void cleanup()

    - #### getWriteBufferLimit

          public static long getWriteBufferLimit()

    - #### getWriteBufferSize

          public static long getWriteBufferSize()

    - #### getWriteBufferFree

          public static long getWriteBufferFree()

    - #### getQueueSize

          public static int getQueueSize()

    - #### getCacheBlockSize

          public static long getCacheBlockSize(CacheBlock cb)

    - #### printStatus

          public static void printStatus(String position)

      Print current status of buffer pool, including all entries. NOTE: use only for debugging or testing.
      Parameters:
        `position` - the position

    - #### forceEviction

          public static void forceEviction()
                                    throws IOException

      Evicts all buffer pool entries. NOTE: use only for debugging or testing.
      Throws:
        `IOException` - if IOException occurs

    - #### getUtilThreadPool

          public static ExecutorService getUtilThreadPool()

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