Examples with IClosableLock org.metaborg.util.concurrent.IClosableLock used on opensource projects

Example 6 with IClosableLock

use of org.metaborg.util.concurrent.IClosableLock in project spoofax by metaborg.

the class AbstractScopeGraphContext method writeLock.

private IClosableLock writeLock() {
    final Lock writeLock = lock.writeLock();
    final IClosableLock lock = new ClosableLock(writeLock);
    return lock;
}

Example 7 with IClosableLock

use of org.metaborg.util.concurrent.IClosableLock in project spoofax by metaborg.

the class IndexTaskContext method unload.

@Override
public void unload() {
    if (index == null && taskEngine == null) {
        return;
    }
    try (IClosableLock lock = writeLock()) {
        index = null;
        taskEngine = null;
    }
}

Example 8 with IClosableLock

use of org.metaborg.util.concurrent.IClosableLock in project spoofax by metaborg.

the class IndexTaskContext method read.

@Override
public IClosableLock read() {
    if (index == null || taskEngine == null) {
        // THREADING: temporarily acquire a write lock when initializing the index, need exclusive access.
        try (IClosableLock lock = writeLock()) {
            /*
                 * THREADING: re-check if index/task engine are still null now that we have exclusive access, there
                 * could have been a context switch before acquiring the lock. Check is also needed because the null
                 * check before is disjunct.
                 */
            if (index == null) {
                index = loadIndex();
            }
            if (taskEngine == null) {
                taskEngine = loadTaskEngine();
            }
        }
    }
    index.recover();
    taskEngine.recover();
    return readLock();
}

Example 9 with IClosableLock

use of org.metaborg.util.concurrent.IClosableLock in project spoofax by metaborg.

the class IndexTaskContext method reset.

@Override
public void reset() throws FileSystemException {
    try (IClosableLock lock = writeLock()) {
        if (index != null) {
            index.reset();
            index = null;
        }
        if (taskEngine != null) {
            taskEngine.reset();
            taskEngine = null;
        }
        final FileObject indexFile = indexFile();
        indexFile.delete();
        final FileObject taskEngineFile = taskEngineFile();
        taskEngineFile.delete();
    }
}

Example 10 with IClosableLock

use of org.metaborg.util.concurrent.IClosableLock in project spoofax by metaborg.

the class IndexTaskContext method write.

@Override
public IClosableLock write() {
    final IClosableLock lock = writeLock();
    if (index == null) {
        index = loadIndex();
    }
    if (taskEngine == null) {
        taskEngine = loadTaskEngine();
    }
    index.recover();
    taskEngine.recover();
    return lock;
}