Examples with FileDescriptor java.io.FileDescriptor used on opensource projects

Example 46 with FileDescriptor

use of java.io.FileDescriptor in project platform_frameworks_base by android.

the class ParcelFileDescriptor method createCommSocketPair.

private static FileDescriptor[] createCommSocketPair() throws IOException {
    try {
        // Use SOCK_SEQPACKET so that we have a guarantee that the status
        // is written and read atomically as one unit and is not split
        // across multiple IO operations.
        final FileDescriptor comm1 = new FileDescriptor();
        final FileDescriptor comm2 = new FileDescriptor();
        Os.socketpair(AF_UNIX, SOCK_SEQPACKET, 0, comm1, comm2);
        IoUtils.setBlocking(comm1, false);
        IoUtils.setBlocking(comm2, false);
        return new FileDescriptor[] { comm1, comm2 };
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    }
}

Example 47 with FileDescriptor

use of java.io.FileDescriptor in project platform_frameworks_base by android.

the class ParcelFileDescriptor method fromFd.

/**
     * Create a new ParcelFileDescriptor from a raw native fd.  The new
     * ParcelFileDescriptor holds a dup of the original fd passed in here,
     * so you must still close that fd as well as the new ParcelFileDescriptor.
     *
     * @param fd The native fd that the ParcelFileDescriptor should dup.
     *
     * @return Returns a new ParcelFileDescriptor holding a FileDescriptor
     * for a dup of the given fd.
     */
public static ParcelFileDescriptor fromFd(int fd) throws IOException {
    final FileDescriptor original = new FileDescriptor();
    original.setInt$(fd);
    try {
        final FileDescriptor dup = Os.dup(original);
        return new ParcelFileDescriptor(dup);
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    }
}

Example 48 with FileDescriptor

use of java.io.FileDescriptor in project platform_frameworks_base by android.

the class ParcelFileDescriptor method createSocketPair.

/**
     * @hide
     */
public static ParcelFileDescriptor[] createSocketPair(int type) throws IOException {
    try {
        final FileDescriptor fd0 = new FileDescriptor();
        final FileDescriptor fd1 = new FileDescriptor();
        Os.socketpair(AF_UNIX, type, 0, fd0, fd1);
        return new ParcelFileDescriptor[] { new ParcelFileDescriptor(fd0), new ParcelFileDescriptor(fd1) };
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    }
}

Example 49 with FileDescriptor

use of java.io.FileDescriptor in project platform_frameworks_base by android.

the class ParcelFileDescriptor method fromFd.

/** {@hide} */
public static ParcelFileDescriptor fromFd(FileDescriptor fd, Handler handler, final OnCloseListener listener) throws IOException {
    if (handler == null) {
        throw new IllegalArgumentException("Handler must not be null");
    }
    if (listener == null) {
        throw new IllegalArgumentException("Listener must not be null");
    }
    final FileDescriptor[] comm = createCommSocketPair();
    final ParcelFileDescriptor pfd = new ParcelFileDescriptor(fd, comm[0]);
    final MessageQueue queue = handler.getLooper().getQueue();
    queue.addOnFileDescriptorEventListener(comm[1], OnFileDescriptorEventListener.EVENT_INPUT, new OnFileDescriptorEventListener() {

        @Override
        public int onFileDescriptorEvents(FileDescriptor fd, int events) {
            Status status = null;
            if ((events & OnFileDescriptorEventListener.EVENT_INPUT) != 0) {
                final byte[] buf = new byte[MAX_STATUS];
                status = readCommStatus(fd, buf);
            } else if ((events & OnFileDescriptorEventListener.EVENT_ERROR) != 0) {
                status = new Status(Status.DEAD);
            }
            if (status != null) {
                queue.removeOnFileDescriptorEventListener(fd);
                IoUtils.closeQuietly(fd);
                listener.onClose(status.asIOException());
                return 0;
            }
            return EVENT_INPUT;
        }
    });
    return pfd;
}

Example 50 with FileDescriptor

use of java.io.FileDescriptor in project robovm by robovm.

the class IoBridge method closeSocket.

public static void closeSocket(FileDescriptor fd) throws IOException {
    if (!fd.valid()) {
        // Socket.close doesn't throw if you try to close an already-closed socket.
        return;
    }
    int intFd = fd.getInt$();
    fd.setInt$(-1);
    FileDescriptor oldFd = new FileDescriptor();
    oldFd.setInt$(intFd);
    AsynchronousCloseMonitor.signalBlockedThreads(oldFd);
    try {
        Libcore.os.close(oldFd);
    } catch (ErrnoException errnoException) {
    // TODO: are there any cases in which we should throw?
    }
}