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@ -56,7 +56,7 @@ import java.util.HashSet;
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import java.util.Locale; |
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import java.util.Objects; |
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import java.util.Set; |
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import java.util.concurrent.atomic.AtomicReference; |
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import java.util.concurrent.locks.ReentrantLock; |
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import org.eclipse.jgit.annotations.Nullable; |
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import org.eclipse.jgit.api.errors.JGitInternalException; |
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@ -125,7 +125,10 @@ public class FileRepository extends Repository {
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private final RefDatabase refs; |
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private final ObjectDirectory objectDatabase; |
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private AtomicReference<FileSnapshot> snapshot = new AtomicReference<>(); |
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private final ReentrantLock snapshotLock = new ReentrantLock(); |
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// protected by snapshotLock
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private FileSnapshot snapshot; |
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/** |
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* Construct a representation of a Git repository. |
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@ -240,8 +243,9 @@ public class FileRepository extends Repository {
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Long.valueOf(repositoryFormatVersion))); |
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} |
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if (!isBare()) |
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snapshot.getAndSet(FileSnapshot.save(getIndexFile())); |
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if (!isBare()) { |
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snapshot = FileSnapshot.save(getIndexFile()); |
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} |
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} |
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private void loadSystemConfig() throws IOException { |
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@ -549,17 +553,30 @@ public class FileRepository extends Repository {
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} |
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File indexFile = getIndexFile(); |
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if (snapshot.get() == null) { |
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snapshot.getAndSet(FileSnapshot.save(indexFile)); |
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} else if (snapshot.get().isModified(indexFile)) { |
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notifyIndexChanged(false); |
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snapshotLock.lock(); |
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try { |
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if (snapshot == null) { |
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snapshot = FileSnapshot.save(indexFile); |
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} else if (snapshot.isModified(indexFile)) { |
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snapshotLock.unlock(); |
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notifyIndexChanged(false); |
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} |
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} finally { |
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if (snapshotLock.isHeldByCurrentThread()) { |
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snapshotLock.unlock(); |
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} |
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} |
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} |
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/** {@inheritDoc} */ |
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@Override |
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public void notifyIndexChanged(boolean internal) { |
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snapshot.getAndSet(FileSnapshot.save(getIndexFile())); |
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snapshotLock.lock(); |
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try { |
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snapshot = FileSnapshot.save(getIndexFile()); |
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} finally { |
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snapshotLock.unlock(); |
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} |
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fireEvent(new IndexChangedEvent(internal)); |
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} |
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