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java.lang.Objectcom.sleepycat.je.log.LogManager
public abstract class LogManager
The LogManager supports reading and writing to the JE log.
Nested Class Summary | |
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(package private) static class |
LogManager.LogResult
LogResult holds the multivalue return from logInternal. |
Field Summary | |
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protected EnvironmentImpl |
envImpl
|
protected LogBufferPool |
logBufferPool
|
protected Latch |
logWriteLatch
|
Constructor Summary | |
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LogManager(EnvironmentImpl envImpl,
boolean readOnly)
There is a single log manager per database environment. |
Method Summary | |
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abstract void |
countObsoleteINs(java.util.List lsnList)
Counts the given obsolete IN LSNs under the log write latch. |
protected void |
countObsoleteINsInternal(java.util.List lsnList)
|
abstract void |
countObsoleteNode(long lsn,
LogEntryType type,
int size)
Count node as obsolete under the log write latch. |
protected void |
countObsoleteNodeInternal(UtilizationTracker tracker,
long lsn,
LogEntryType type,
int size)
|
abstract void |
countObsoleteNodes(java.util.Collection summaries)
Counts file summary info under the log write latch. |
protected void |
countObsoleteNodesInternal(UtilizationTracker tracker,
java.util.Collection summaries)
|
void |
flush()
Flush all log entries, fsync the log file. |
protected abstract void |
flushInternal()
|
void |
flushNoSync()
May be used to avoid sync to speed unit tests. |
java.lang.Object |
get(long lsn)
Fault in the first object in the log entry log entry at this LSN. |
boolean |
getChecksumOnRead()
|
long |
getLastLsnAtRecovery()
|
LogEntry |
getLogEntry(long lsn)
Instantiate all the objects in the log entry at this LSN. |
(package private) LogEntry |
getLogEntry(long lsn,
java.io.RandomAccessFile file)
|
LogSource |
getLogSource(long lsn)
Find the LSN, whether in a file or still in the log buffers. |
abstract TrackedFileSummary |
getUnflushableTrackedSummary(long file)
Returns a tracked summary for the given file which will not be flushed. |
protected TrackedFileSummary |
getUnflushableTrackedSummaryInternal(long file)
|
abstract void |
loadEndOfLogStat(EnvironmentStats stats)
|
(package private) void |
loadEndOfLogStatInternal(EnvironmentStats stats)
|
void |
loadStats(StatsConfig config,
EnvironmentStats stats)
|
long |
log(LogEntry item)
Write a log entry. |
long |
log(LogEntry item,
boolean isProvisional,
boolean backgroundIO,
long oldNodeLsn,
int oldNodeSize)
Write a log entry. |
long |
logForceFlip(LogEntry item)
Log this single object and force a flip of the log files. |
long |
logForceFlush(LogEntry item,
boolean fsyncRequired)
Log this single object and force a write of the log files. |
protected LogManager.LogResult |
logInternal(LogEntryHeader header,
LogEntry item,
boolean isProvisional,
boolean flushRequired,
boolean forceNewLogFile,
long oldNodeLsn,
int oldNodeSize,
boolean marshallOutsideLatch,
java.nio.ByteBuffer marshalledBuffer,
UtilizationTracker tracker,
boolean shouldReplicate)
Called within the log write critical section. |
protected abstract LogManager.LogResult |
logItem(LogEntryHeader header,
LogEntry item,
boolean isProvisional,
boolean flushRequired,
boolean forceNewLogFile,
long oldNodeLsn,
int oldNodeSize,
boolean marshallOutsideLatch,
java.nio.ByteBuffer marshalledBuffer,
UtilizationTracker tracker,
boolean shouldReplicate)
|
(package private) java.nio.ByteBuffer |
putIntoBuffer(LogEntry item,
long prevLogEntryOffset)
Serialize a log entry into this buffer with proper entry header. |
abstract void |
removeTrackedFile(TrackedFileSummary tfs)
Removes the tracked summary for the given file. |
protected void |
removeTrackedFileInternal(TrackedFileSummary tfs)
|
void |
resetPool(DbConfigManager configManager)
Reset the pool when the cache is resized. |
void |
setLastLsnAtRecovery(long lastLsnAtRecovery)
|
void |
setReadHook(TestHook hook)
|
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected LogBufferPool logBufferPool
protected Latch logWriteLatch
protected EnvironmentImpl envImpl
Constructor Detail |
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public LogManager(EnvironmentImpl envImpl, boolean readOnly) throws DatabaseException
DatabaseException
Method Detail |
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public boolean getChecksumOnRead()
public long getLastLsnAtRecovery()
public void setLastLsnAtRecovery(long lastLsnAtRecovery)
public void resetPool(DbConfigManager configManager) throws DatabaseException
DatabaseException
public long logForceFlush(LogEntry item, boolean fsyncRequired) throws DatabaseException
item
- object to be loggedfsyncRequired
- if true, log files should also be fsynced.
DatabaseException
public long logForceFlip(LogEntry item) throws DatabaseException
item
- object to be loggedfsyncRequired
- if true, log files should also be fsynced.
DatabaseException
public long log(LogEntry item) throws DatabaseException
DatabaseException
public long log(LogEntry item, boolean isProvisional, boolean backgroundIO, long oldNodeLsn, int oldNodeSize) throws DatabaseException
DatabaseException
protected abstract LogManager.LogResult logItem(LogEntryHeader header, LogEntry item, boolean isProvisional, boolean flushRequired, boolean forceNewLogFile, long oldNodeLsn, int oldNodeSize, boolean marshallOutsideLatch, java.nio.ByteBuffer marshalledBuffer, UtilizationTracker tracker, boolean shouldReplicate) throws java.io.IOException, DatabaseException
java.io.IOException
DatabaseException
protected LogManager.LogResult logInternal(LogEntryHeader header, LogEntry item, boolean isProvisional, boolean flushRequired, boolean forceNewLogFile, long oldNodeLsn, int oldNodeSize, boolean marshallOutsideLatch, java.nio.ByteBuffer marshalledBuffer, UtilizationTracker tracker, boolean shouldReplicate) throws java.io.IOException, DatabaseException
java.io.IOException
DatabaseException
java.nio.ByteBuffer putIntoBuffer(LogEntry item, long prevLogEntryOffset) throws DatabaseException
DatabaseException
public LogEntry getLogEntry(long lsn) throws DatabaseException
lsn
- location of entry in log.
DatabaseException
LogEntry getLogEntry(long lsn, java.io.RandomAccessFile file) throws DatabaseException
DatabaseException
public java.lang.Object get(long lsn) throws DatabaseException
lsn
- location of object in log
DatabaseException
public LogSource getLogSource(long lsn) throws DatabaseException
DatabaseException
public void flush() throws DatabaseException
DatabaseException
public void flushNoSync() throws DatabaseException
DatabaseException
protected abstract void flushInternal() throws LogException, DatabaseException
LogException
DatabaseException
public void loadStats(StatsConfig config, EnvironmentStats stats) throws DatabaseException
DatabaseException
public abstract TrackedFileSummary getUnflushableTrackedSummary(long file) throws DatabaseException
DatabaseException
protected TrackedFileSummary getUnflushableTrackedSummaryInternal(long file) throws DatabaseException
DatabaseException
public abstract void removeTrackedFile(TrackedFileSummary tfs) throws DatabaseException
DatabaseException
protected void removeTrackedFileInternal(TrackedFileSummary tfs)
public abstract void countObsoleteNode(long lsn, LogEntryType type, int size) throws DatabaseException
DatabaseException
protected void countObsoleteNodeInternal(UtilizationTracker tracker, long lsn, LogEntryType type, int size) throws DatabaseException
DatabaseException
public abstract void countObsoleteNodes(java.util.Collection summaries) throws DatabaseException
DatabaseException
protected void countObsoleteNodesInternal(UtilizationTracker tracker, java.util.Collection summaries) throws DatabaseException
DatabaseException
public abstract void countObsoleteINs(java.util.List lsnList) throws DatabaseException
DatabaseException
protected void countObsoleteINsInternal(java.util.List lsnList) throws DatabaseException
DatabaseException
public abstract void loadEndOfLogStat(EnvironmentStats stats) throws DatabaseException
DatabaseException
void loadEndOfLogStatInternal(EnvironmentStats stats)
public void setReadHook(TestHook hook)
|
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