Examples with ErrnoException libcore.io.ErrnoException used on opensource projects

Example 16 with ErrnoException

use of libcore.io.ErrnoException in project XobotOS by xamarin.

the class FileChannelImpl method release.

/**
     * Non-API method to release a given lock on a file channel. Assumes that
     * the lock will mark itself invalid after successful unlocking.
     */
public void release(FileLock lock) throws IOException {
    checkOpen();
    StructFlock flock = new StructFlock();
    flock.l_type = (short) F_UNLCK;
    flock.l_whence = (short) SEEK_SET;
    flock.l_start = lock.position();
    flock.l_len = translateLockLength(lock.size());
    try {
        Libcore.os.fcntlFlock(fd, F_SETLKW64, flock);
    } catch (ErrnoException errnoException) {
        throw errnoException.rethrowAsIOException();
    }
    removeLock(lock);
}

Example 17 with ErrnoException

use of libcore.io.ErrnoException in project XobotOS by xamarin.

the class FileChannelImpl method map.

public final MappedByteBuffer map(MapMode mapMode, long position, long size) throws IOException {
    checkOpen();
    if (mapMode == null) {
        throw new NullPointerException("mapMode == null");
    }
    if (position < 0 || size < 0 || size > Integer.MAX_VALUE) {
        throw new IllegalArgumentException("position=" + position + " size=" + size);
    }
    int accessMode = (mode & O_ACCMODE);
    if (accessMode == O_RDONLY) {
        if (mapMode != MapMode.READ_ONLY) {
            throw new NonWritableChannelException();
        }
    } else if (accessMode == O_WRONLY) {
        throw new NonReadableChannelException();
    }
    if (position + size > size()) {
        // and we only care about making our backing file longer here.
        try {
            Libcore.os.ftruncate(fd, position + size);
        } catch (ErrnoException errnoException) {
            throw errnoException.rethrowAsIOException();
        }
    }
    long alignment = position - position % Libcore.os.sysconf(_SC_PAGE_SIZE);
    int offset = (int) (position - alignment);
    MemoryBlock block = MemoryBlock.mmap(fd, alignment, size + offset, mapMode);
    return new MappedByteBufferAdapter(block, (int) size, offset, mapMode);
}

Example 18 with ErrnoException

use of libcore.io.ErrnoException in project XobotOS by xamarin.

the class FileChannelImpl method basicLock.

private FileLock basicLock(long position, long size, boolean shared, boolean wait) throws IOException {
    int accessMode = (mode & O_ACCMODE);
    if (accessMode == O_RDONLY) {
        if (!shared) {
            throw new NonWritableChannelException();
        }
    } else if (accessMode == O_WRONLY) {
        if (shared) {
            throw new NonReadableChannelException();
        }
    }
    if (position < 0 || size < 0) {
        throw new IllegalArgumentException("position=" + position + " size=" + size);
    }
    FileLock pendingLock = new FileLockImpl(this, position, size, shared);
    addLock(pendingLock);
    StructFlock flock = new StructFlock();
    flock.l_type = (short) (shared ? F_RDLCK : F_WRLCK);
    flock.l_whence = (short) SEEK_SET;
    flock.l_start = position;
    flock.l_len = translateLockLength(size);
    boolean success = false;
    try {
        success = (Libcore.os.fcntlFlock(fd, wait ? F_SETLKW64 : F_SETLK64, flock) != -1);
    } catch (ErrnoException errnoException) {
        throw errnoException.rethrowAsIOException();
    } finally {
        if (!success) {
            removeLock(pendingLock);
        }
    }
    return success ? pendingLock : null;
}

Example 19 with ErrnoException

use of libcore.io.ErrnoException in project XobotOS by xamarin.

the class InetAddress method isReachable.

private boolean isReachable(InetAddress destination, InetAddress source, int timeout) throws IOException {
    // TODO: try ICMP first (http://code.google.com/p/android/issues/detail?id=20106)
    FileDescriptor fd = IoBridge.socket(true);
    boolean reached = false;
    try {
        if (source != null) {
            IoBridge.bind(fd, source, 0);
        }
        IoBridge.connect(fd, destination, 7, timeout);
        reached = true;
    } catch (IOException e) {
        if (e.getCause() instanceof ErrnoException) {
            // "Connection refused" means the IP address was reachable.
            reached = (((ErrnoException) e.getCause()).errno == ECONNREFUSED);
        }
    }
    IoBridge.closeSocket(fd);
    return reached;
}

Example 20 with ErrnoException

use of libcore.io.ErrnoException in project robovm by robovm.

the class InetAddress method isReachable.

private boolean isReachable(InetAddress destination, InetAddress source, int timeout) throws IOException {
    // TODO: try ICMP first (http://code.google.com/p/android/issues/detail?id=20106)
    FileDescriptor fd = IoBridge.socket(true);
    boolean reached = false;
    try {
        if (source != null) {
            IoBridge.bind(fd, source, 0);
        }
        IoBridge.connect(fd, destination, 7, timeout);
        reached = true;
    } catch (IOException e) {
        if (e.getCause() instanceof ErrnoException) {
            // "Connection refused" means the IP address was reachable.
            reached = (((ErrnoException) e.getCause()).errno == ECONNREFUSED);
        }
    }
    IoBridge.closeSocket(fd);
    return reached;
}