protected static class DatabaseFactory.EnvironmentHolder.DirectoryLock extends Object
A single instance of the DirectoryLock is not intended for inter thread locking. Multiple instance referring to the same File should be used instead.
Modifier and Type | Field and Description |
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static String |
LOCK_FILE_NAME
Name of warning file.
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protected File |
m_dir
Directory to lock.
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protected FileOutputStream |
m_fstreamLocked
The FileStream which the actual lock is held on.
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protected FileLock |
m_lockDir
The actual FileLock.
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protected String |
m_sLockText
Text to include in the lock file.
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Constructor and Description |
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DirectoryLock(File dir, String sLockText)
Create a DirectoryLock which can be used to try to lock a directory.
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Modifier and Type | Method and Description |
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protected void |
finalize()
Automatically release the lock on finalization.
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boolean |
tryLock()
Try to lock the directory.
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boolean |
tryUnlock()
Try to unlock the directory.
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public static final String LOCK_FILE_NAME
protected File m_dir
protected FileOutputStream m_fstreamLocked
protected FileLock m_lockDir
protected String m_sLockText
public boolean tryLock() throws IOException
IOException
- if an IO error occurs while creating the lock filepublic boolean tryUnlock() throws IOException
IOException
- if an IO error occurs while deleting the lock file, the lock may be left in an unlocked state