Uses of Class
org.objectweb.howl.log.LogBuffer

Packages that use LogBuffer
Package
Description
org.objectweb.howl.log
Core functionality for any log file implementation.

  • Uses of LogBuffer in org.objectweb.howl.log

    Subclasses of LogBuffer in org.objectweb.howl.log
    Modifier and Type
    Class
    Description
    (package private) class 
    BlockLogBuffer
    An implementation of LogBuffer that provides features necessary for a reliable Transaction Monitor journal.
    (package private) class 
    BlockLogBufferSink
    An implementation of BlockLogBuffer that does *not* perform IO.
    Fields in org.objectweb.howl.log declared as LogBuffer
    Modifier and Type
    Field
    Description
    (package private) LogBuffer
    LogRecord.buffer
    used by Logger.get() and Logger.getNext() to retrieve records from the journal.
    private LogBuffer[]
    LogBufferManager.bufferList
    array of all LogBuffer objects allocated.
    private LogBuffer
    LogBufferManager.fillBuffer
    The LogBuffer that is currently being filled.
    private LogBuffer[]
    LogBufferManager.forceQueue
    queue of buffers waiting to be written.
    private LogBuffer[]
    LogBufferManager.freeBuffer
    array of LogBuffer objects available for filling
    Methods in org.objectweb.howl.log that return LogBuffer
    Modifier and Type
    Method
    Description
    private LogBuffer
    LogBufferManager.getFillBuffer()
    returns a LogBuffer to be filled.
    (package private) LogBuffer
    LogBufferManager.getLogBuffer(int index)
    return a new instance of LogBuffer.
    (package private) LogBuffer
    BlockLogBuffer.init(int bsn, LogFileManager lfm)
    initialize members for buffer reuse.
    (package private) abstract LogBuffer
    LogBuffer.init(int bsn, LogFileManager lfm)
    initialize members for LogBuffer implementation class for reuse.
    (package private) LogBuffer
    BlockLogBuffer.read(LogFile lf, long position)
    Reads a block from LogFile lf and validates header and footer information.
    (package private) abstract LogBuffer
    LogBuffer.read(LogFile lf, long position)
    read a block of data from the LogFile object provided in the lf parameter starting at the position specified in the postiion parameter.
    Methods in org.objectweb.howl.log with parameters of type LogBuffer
    Modifier and Type
    Method
    Description
    (package private) void
    LogBufferManager.fqAdd(LogBuffer buffer)
    Add a buffer to the forceQueue.
    protected LogRecord
    LogRecord.get(LogBuffer lb)
    protected method to copy next logical record from the LogBuffer specified by the callers lb parameter.
    (package private) LogFile
    LogFileManager.getLogFileForWrite(LogBuffer lb)
    Called by LogBuffer.init() to obtain the LogFile that will be used to write a specific log block.
    private LogRecord
    LogRecord.getNext(LogBuffer lb)
    helper for get().
    (package private) int
    LogFileManager.read(LogBuffer lb, int bsn)
    reads a block of data into LogBuffer lb .
    private void
    LogBufferManager.releaseBuffer(LogBuffer buffer)
    decrements count of threads waiting on this buffer.
    private void
    LogBufferManager.sync(LogBuffer logBuffer)
    Waits for logBuffer to be forced to disk.
    (package private) void
    LogFileManager.validateFileHeader(LogBuffer lb)
    Compares values in log file header record with current configuration.
    (package private) void
    LogFile.write(LogBuffer lb)
    Helper provides access to the FileChannel.write() method for the FileChannel associated with this LogFile.