Allow to use an external ExecutorService for background auto-gc
If set use the external executor, otherwise use JGit's own simple WorkQueue. Move WorkQueue to an internal package so we can reuse it without exposing it in the public API. Change-Id: I060d62ffd6692362a88b4bf13ee07b0dc857abe9 Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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@ -85,6 +85,7 @@ Export-Package: org.eclipse.jgit.annotations;version="4.8.0",
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org.eclipse.jgit.treewalk,
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org.eclipse.jgit.transport,
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org.eclipse.jgit.submodule",
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org.eclipse.jgit.lib.internal;version="4.8.0";x-internal:=true,
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org.eclipse.jgit.merge;version="4.8.0";
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uses:="org.eclipse.jgit.lib,
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org.eclipse.jgit.treewalk,
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@ -78,7 +78,6 @@
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import java.util.concurrent.Callable;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.Future;
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import java.util.regex.Pattern;
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import java.util.stream.Collectors;
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@ -107,6 +106,7 @@
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import org.eclipse.jgit.lib.ProgressMonitor;
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import org.eclipse.jgit.lib.Ref;
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import org.eclipse.jgit.lib.Ref.Storage;
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import org.eclipse.jgit.lib.internal.WorkQueue;
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import org.eclipse.jgit.lib.RefDatabase;
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import org.eclipse.jgit.lib.ReflogEntry;
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import org.eclipse.jgit.lib.ReflogReader;
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@ -151,7 +151,19 @@ public class GC {
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private static final int DEFAULT_AUTOLIMIT = 6700;
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private static ExecutorService executor = Executors.newFixedThreadPool(1);
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private static volatile ExecutorService executor;
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/**
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* Set the executor for running auto-gc in the background. If no executor is
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* set JGit's own WorkQueue will be used.
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*
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* @param e
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* the executor to be used for running auto-gc
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* @since 4.8
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*/
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public static void setExecutor(ExecutorService e) {
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executor = e;
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}
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private final FileRepository repo;
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@ -271,7 +283,7 @@ public Collection<PackFile> gc() throws IOException, ParseException {
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}
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return Collections.emptyList();
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};
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Future<Collection<PackFile>> result = executor.submit(gcTask);
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Future<Collection<PackFile>> result = executor().submit(gcTask);
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if (background) {
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// TODO(ms): in 5.0 change signature and return the Future
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return Collections.emptyList();
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@ -283,6 +295,10 @@ public Collection<PackFile> gc() throws IOException, ParseException {
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}
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}
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private ExecutorService executor() {
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return (executor != null) ? executor : WorkQueue.getExecutor();
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}
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private Collection<PackFile> doGc() throws IOException, ParseException {
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if (automatic && !needGc()) {
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return Collections.emptyList();
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@ -46,6 +46,8 @@
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import java.util.concurrent.Future;
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import java.util.concurrent.TimeUnit;
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import org.eclipse.jgit.lib.internal.WorkQueue;
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/** ProgressMonitor that batches update events. */
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public abstract class BatchingProgressMonitor implements ProgressMonitor {
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private long delayStartTime;
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@ -55,6 +55,7 @@
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import org.eclipse.jgit.annotations.NonNull;
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import org.eclipse.jgit.errors.RepositoryNotFoundException;
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import org.eclipse.jgit.internal.storage.file.FileRepository;
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import org.eclipse.jgit.lib.internal.WorkQueue;
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import org.eclipse.jgit.util.FS;
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import org.eclipse.jgit.util.IO;
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import org.eclipse.jgit.util.RawParseUtils;
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@ -41,7 +41,7 @@
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.eclipse.jgit.lib;
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package org.eclipse.jgit.lib.internal;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ScheduledThreadPoolExecutor;
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@ -50,7 +50,7 @@
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/**
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* Simple work queue to run tasks in the background
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*/
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class WorkQueue {
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public class WorkQueue {
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private static final ScheduledThreadPoolExecutor executor;
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static final Object executorKiller;
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@ -94,7 +94,10 @@ protected void finalize() {
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};
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}
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static ScheduledThreadPoolExecutor getExecutor() {
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/**
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* @return the WorkQueue's executor
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*/
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public static ScheduledThreadPoolExecutor getExecutor() {
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return executor;
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}
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}
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