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[spotbugs] DfsReftableDatabase: extract lock to local variable 

This fixes UL_UNRELEASED_LOCK_EXCEPTION_PATH raised by spotbugs in
#DfsReftableDatabase and #clearCache.

Change-Id: Ifd3189288d2a8e64139c02cd105eb335fa2f68cf
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This commit is contained in:
Matthias Sohn 2020-12-04 11:12:27 +01:00
parent 1fd0a49ce0
commit 39cbc574d1
1 changed files with 7 additions and 4 deletions
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11
org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsReftableDatabase.java
View File

@ -17,6 +17,7 @@
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.eclipse.jgit.annotations.Nullable;
@ -62,11 +63,12 @@ protected DfsReftableDatabase(DfsRepository repo) {
reftableDatabase = new ReftableDatabase() {
@Override
public MergedReftable openMergedReftable() throws IOException {
DfsReftableDatabase.this.getLock().lock();
Lock l = DfsReftableDatabase.this.getLock();
l.lock();
try {
return new MergedReftable(stack().readers());
} finally {
DfsReftableDatabase.this.getLock().unlock();
l.unlock();
}
}
};
@ -207,7 +209,8 @@ boolean exists() throws IOException {
@Override
void clearCache() {
getLock().lock();
ReentrantLock l = getLock();
l.lock();
try {
if (ctx != null) {
ctx.close();
@ -219,7 +222,7 @@ void clearCache() {
stack = null;
}
} finally {
getLock().unlock();
l.unlock();
}
}