Class RamJournalRM.DefaultDependencies

java.lang.Object
com.tangosol.io.journal.AbstractJournalRM.DefaultDependencies
com.tangosol.io.journal.RamJournalRM.DefaultDependencies
All Implemented Interfaces:
AbstractJournalRM.Dependencies, RamJournalRM.Dependencies
Enclosing class:
RamJournalRM
public static class RamJournalRM.DefaultDependencies extends AbstractJournalRM.DefaultDependencies implements RamJournalRM.Dependencies
The DefaultDependencies class provides a default implementation of Dependencies.
Since:
Coherence 3.7
Author:
cp/cf 2010-06-24

  • Field Details

    • MIN_FILE_SIZE

      public static final long MIN_FILE_SIZE
      Minimum maximum size of a "file" i.e. a buffer (1MB).
      See Also:

    • MAX_FILE_SIZE

      public static final long MAX_FILE_SIZE
      Maximum size of a "file" i.e. a buffer (2GB).
      See Also:

    • MIN_TOTAL_SIZE

      public static final long MIN_TOTAL_SIZE
      Minimum maximum total size of RAM used (16MB).
      See Also:

    • MAX_TOTAL_SIZE

      public static final long MAX_TOTAL_SIZE
      Maximum total size of RAM used (64GB).
      See Also:

    • DFT_TOTAL_SIZE

      public static final long DFT_TOTAL_SIZE
      Default total size of RAM used (1GB).
      See Also:

    • MAX_VALUE_SIZE

      public static final int MAX_VALUE_SIZE
      Maximum value size (4MB).
      See Also:

    • DFT_VALUE_SIZE

      public static final int DFT_VALUE_SIZE
      Default maximum value size (16KB).
      See Also:

    • DFT_COLLECT_PCT

      public static final double DFT_COLLECT_PCT
      Default collection factor (collect files that are 84% or less utilized).
      See Also:

    • MAX_POOL_SIZE

      public static final long MAX_POOL_SIZE
      Maximum pool size (64GB).
      See Also:

    • DFT_POOL_SIZE

      public static final long DFT_POOL_SIZE
      Default pool size (16MB).
      See Also:

  • Constructor Details

    • DefaultDependencies

      public DefaultDependencies()
      Construct a DefaultDependencies object.

    • DefaultDependencies

      public DefaultDependencies(RamJournalRM.Dependencies deps)
      Construct a DefaultDependencies object. Copy the values from the specified Dependencies object.
      Parameters:
      deps - the dependencies to copy, or null

  • Method Details

    • isNioRam

      public boolean isNioRam()
      Return if the journal will use off-heap buffers (NIO RAM) instead of on-heap buffers (byte arrays).
      Specified by:
      isNioRam in interface RamJournalRM.Dependencies
      Returns:
      true if the journal is configured to use NIO "direct buffer" RAM

    • setNioRam

      public RamJournalRM.DefaultDependencies setNioRam(boolean fUseNioRam)
      Set the journal to use direct buffers (NIO RAM) versus on-heap buffers (byte arrays) to store the journal data. The default is that the journal data is kept on heap in byte arrays.
      Parameters:
      fUseNioRam - pass true to use NIO direct buffers off the heap, or false to use byte arrays on the heap
      Returns:
      this object

    • getMaxPoolSize

      public long getMaxPoolSize()
      Return the maximum size (in bytes) of the buffers that can be held by the pool. This is not a limit of how many buffers can be allocated, since some may be in use at any time, but rather how many will be held by the pool (i.e. recycled) as they are released.
      Specified by:
      getMaxPoolSize in interface RamJournalRM.Dependencies
      Returns:
      the maximum size in bytes of all of the buffers that the buffer pool can hold onto

    • setMaxPoolSize

      public RamJournalRM.DefaultDependencies setMaxPoolSize(long maxPool)
      Set the size of the buffers pool. The default is defined by DFT_POOL_SIZE, with a maximum defined by MAX_POOL_SIZE and a minimum of zero.
      Parameters:
      maxPool - the size, in bytes, for the buffer pool
      Returns:
      this object

    • validate

      public RamJournalRM.DefaultDependencies validate()
      Validate the supplied dependencies.
      Overrides:
      validate in class AbstractJournalRM.DefaultDependencies
      Returns:
      this object
      Throws:
      IllegalArgumentException - if the dependencies are not valid

    • getDefaultMaxFileSize

      protected long getDefaultMaxFileSize()
      Get the default maximum file size for this Journal Resource Manager.
      Specified by:
      getDefaultMaxFileSize in class AbstractJournalRM.DefaultDependencies
      Returns:
      the default maximum file size

    • getDefaultMaxValueSize

      protected int getDefaultMaxValueSize()
      Get the default maximum value size for this Journal Resource Manager.
      Specified by:
      getDefaultMaxValueSize in class AbstractJournalRM.DefaultDependencies
      Returns:
      the default maximum value size

    • getDefaultMaxSize

      protected long getDefaultMaxSize()
      Get the default maximum size (capacity) for this Journal Resource Manager.
      Specified by:
      getDefaultMaxSize in class AbstractJournalRM.DefaultDependencies
      Returns:
      the default maximum size

    • getDefaultCollectorLoadFactor

      protected double getDefaultCollectorLoadFactor()
      Get the default percentage at which a file is eligible for garbage collection.
      Specified by:
      getDefaultCollectorLoadFactor in class AbstractJournalRM.DefaultDependencies
      Returns:
      the default garbage collection load factor

    • getPermittedMinJournalSize

      protected long getPermittedMinJournalSize()
      Return the lowest memory size that can be allocated per journal.
      Specified by:
      getPermittedMinJournalSize in class AbstractJournalRM.DefaultDependencies
      Returns:
      the lowest memory size that can be allocated per journal

    • getPermittedMaxJournalSize

      protected long getPermittedMaxJournalSize()
      Return the highest memory size that can be allocated per journal.
      Specified by:
      getPermittedMaxJournalSize in class AbstractJournalRM.DefaultDependencies
      Returns:
      the highest memory size that can be allocated per journal

    • getPermittedMinFileSize

      protected long getPermittedMinFileSize()
      Return the lowest memory size that can be allocated per journal file.
      Specified by:
      getPermittedMinFileSize in class AbstractJournalRM.DefaultDependencies
      Returns:
      the lowest memory size that can be allocated per journal file

    • getPermittedMaxFileSize

      protected long getPermittedMaxFileSize()
      Return the highest memory size that can be allocated per journal file.
      Specified by:
      getPermittedMaxFileSize in class AbstractJournalRM.DefaultDependencies
      Returns:
      the highest memory size that can be allocated per journal file

    • getPermittedMaxValueSize

      protected int getPermittedMaxValueSize()
      Return the highest memory size permitted for each value stored in the journal.
      Specified by:
      getPermittedMaxValueSize in class AbstractJournalRM.DefaultDependencies
      Returns:
      the highest memory size permitted for each value stored in the journal

    • toString

      public String toString()
      Return the DefautlDependencies in String format.
      Overrides:
      toString in class AbstractJournalRM.DefaultDependencies
      Returns:
      the DefautlDependencies in String format