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Use ReadWriteLock instead of synchronized

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This commit is contained in:
huangyuhui
2018-09-07 01:58:43 +08:00
parent ada63f1452
commit 9360854150
1 changed files with 42 additions and 18 deletions
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60
HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLLocalRepository.java
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@@ -28,6 +28,9 @@ import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.*;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.logging.Level;
import java.util.stream.Collectors;
@@ -36,7 +39,7 @@ public class HMCLLocalRepository extends LocalRepository {
private Path librariesDir;
private Path indexFile;
private final ReadWriteLock lock = new ReentrantReadWriteLock();
private Index index = null;
public HMCLLocalRepository() {
@@ -62,11 +65,14 @@ public class HMCLLocalRepository extends LocalRepository {
librariesDir = commonDir.resolve("libraries");
indexFile = getCacheDirectory().resolve("index.json");
lock.writeLock().lock();
try {
index = Constants.GSON.fromJson(FileUtils.readText(indexFile.toFile()), Index.class);
} catch (IOException e) {
Logging.LOG.log(Level.WARNING, "Unable to read index file", e);
index = new Index();
} finally {
lock.writeLock().unlock();
}
}
@@ -79,8 +85,13 @@ public class HMCLLocalRepository extends LocalRepository {
* @param jar the file of library
*/
public void tryCacheLibrary(Library library, Path jar) {
if (index.getLibraries().stream().anyMatch(it -> library.getName().equals(it.getName())))
return;
lock.readLock().lock();
try {
if (index.getLibraries().stream().anyMatch(it -> library.getName().equals(it.getName())))
return;
} finally {
lock.readLock().unlock();
}
try {
LibraryDownloadInfo info = library.getDownload();
@@ -106,25 +117,32 @@ public class HMCLLocalRepository extends LocalRepository {
* @param library the library we check if cached.
* @return the cached path if exists, otherwise empty
*/
public synchronized Optional<Path> getLibrary(Library library) {
public Optional<Path> getLibrary(Library library) {
LibraryDownloadInfo info = library.getDownload();
String hash = info.getSha1();
if (fileExists(SHA1, hash))
return Optional.of(getFile(SHA1, hash));
// check if this library is from Forge
List<LibraryIndex> libraries = index.getLibraries().stream()
.filter(it -> it.getName().equals(library.getName()))
.collect(Collectors.toList());
for (LibraryIndex libIndex : libraries) {
if (fileExists(SHA1, libIndex.getHash())) {
Path file = getFile(SHA1, libIndex.getHash());
if (libIndex.getType().equalsIgnoreCase(LibraryIndex.TYPE_FORGE)) {
if (LibraryDownloadTask.checksumValid(file.toFile(), library.getChecksums()))
return Optional.of(file);
Lock readLock = lock.readLock();
readLock.lock();
try {
// check if this library is from Forge
List<LibraryIndex> libraries = index.getLibraries().stream()
.filter(it -> it.getName().equals(library.getName()))
.collect(Collectors.toList());
for (LibraryIndex libIndex : libraries) {
if (fileExists(SHA1, libIndex.getHash())) {
Path file = getFile(SHA1, libIndex.getHash());
if (libIndex.getType().equalsIgnoreCase(LibraryIndex.TYPE_FORGE)) {
if (LibraryDownloadTask.checksumValid(file.toFile(), library.getChecksums()))
return Optional.of(file);
}
}
}
} finally {
readLock.unlock();
}
// check old common directory
@@ -158,7 +176,7 @@ public class HMCLLocalRepository extends LocalRepository {
* @return cached file location
* @throws IOException if failed to calculate hash code of {@code path} or copy the file to cache
*/
public synchronized Path cacheLibrary(Library library, Path path, boolean forge) throws IOException {
public Path cacheLibrary(Library library, Path path, boolean forge) throws IOException {
String hash = library.getDownload().getSha1();
if (hash == null)
hash = Hex.encodeHex(DigestUtils.digest(SHA1, path));
@@ -166,9 +184,15 @@ public class HMCLLocalRepository extends LocalRepository {
Path cache = getFile(SHA1, hash);
FileUtils.copyFile(path.toFile(), cache.toFile());
LibraryIndex libIndex = new LibraryIndex(library.getName(), hash, forge ? LibraryIndex.TYPE_FORGE : LibraryIndex.TYPE_JAR);
index.getLibraries().add(libIndex);
saveIndex();
Lock writeLock = lock.writeLock();
writeLock.lock();
try {
LibraryIndex libIndex = new LibraryIndex(library.getName(), hash, forge ? LibraryIndex.TYPE_FORGE : LibraryIndex.TYPE_JAR);
index.getLibraries().add(libIndex);
saveIndex();
} finally {
writeLock.unlock();
}
return cache;
}