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

Example 36 with FileDescriptor

use of java.io.FileDescriptor in project fresco by facebook.

the class WebpBitmapFactoryTest method testJpegFileDescriptorDecode.

@Test
public void testJpegFileDescriptorDecode() throws Throwable {
    FileDescriptor fd = getImageFileDescriptor("redsquare.jpg");
    final Bitmap bitmap = mWebpBitmapFactory.decodeFileDescriptor(fd, null, null);
    testBitmapDefault(bitmap, 20, 20);
}

Example 37 with FileDescriptor

use of java.io.FileDescriptor in project XobotOS by xamarin.

the class BackupHelperDispatcher method performBackup.

public void performBackup(ParcelFileDescriptor oldState, BackupDataOutput data, ParcelFileDescriptor newState) throws IOException {
    // First, do the helpers that we've already done, since they're already in the state
    // file.
    int err;
    Header header = new Header();
    TreeMap<String, BackupHelper> helpers = (TreeMap<String, BackupHelper>) mHelpers.clone();
    FileDescriptor oldStateFD = null;
    FileDescriptor newStateFD = newState.getFileDescriptor();
    if (oldState != null) {
        oldStateFD = oldState.getFileDescriptor();
        while ((err = readHeader_native(header, oldStateFD)) >= 0) {
            if (err == 0) {
                BackupHelper helper = helpers.get(header.keyPrefix);
                Log.d(TAG, "handling existing helper '" + header.keyPrefix + "' " + helper);
                if (helper != null) {
                    doOneBackup(oldState, data, newState, header, helper);
                    helpers.remove(header.keyPrefix);
                } else {
                    skipChunk_native(oldStateFD, header.chunkSize);
                }
            }
        }
    }
    // Then go through and do the rest that we haven't done.
    for (Map.Entry<String, BackupHelper> entry : helpers.entrySet()) {
        header.keyPrefix = entry.getKey();
        Log.d(TAG, "handling new helper '" + header.keyPrefix + "'");
        BackupHelper helper = entry.getValue();
        doOneBackup(oldState, data, newState, header, helper);
    }
}

Example 38 with FileDescriptor

use of java.io.FileDescriptor in project XobotOS by xamarin.

the class FileBackupHelperBase method performBackup_checked.

/**
     * Check the parameters so the native code doesn't have to throw all the exceptions
     * since it's easier to do that from Java.
     */
static void performBackup_checked(ParcelFileDescriptor oldState, BackupDataOutput data, ParcelFileDescriptor newState, String[] files, String[] keys) {
    if (files.length == 0) {
        return;
    }
    // files must be all absolute paths
    for (String f : files) {
        if (f.charAt(0) != '/') {
            throw new RuntimeException("files must have all absolute paths: " + f);
        }
    }
    // the length of files and keys must be the same
    if (files.length != keys.length) {
        throw new RuntimeException("files.length=" + files.length + " keys.length=" + keys.length);
    }
    // oldStateFd can be null
    FileDescriptor oldStateFd = oldState != null ? oldState.getFileDescriptor() : null;
    FileDescriptor newStateFd = newState.getFileDescriptor();
    if (newStateFd == null) {
        throw new NullPointerException();
    }
    int err = performBackup_native(oldStateFd, data.mBackupWriter, newStateFd, files, keys);
    if (err != 0) {
        // TODO: more here
        throw new RuntimeException("Backup failed 0x" + Integer.toHexString(err));
    }
}

Example 39 with FileDescriptor

use of java.io.FileDescriptor in project XobotOS by xamarin.

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?
    }
}

Example 40 with FileDescriptor

use of java.io.FileDescriptor in project XobotOS by xamarin.

the class IoBridge method open.

/**
     * java.io only throws FileNotFoundException when opening files, regardless of what actually
     * went wrong. Additionally, java.io is more restrictive than POSIX when it comes to opening
     * directories: POSIX says read-only is okay, but java.io doesn't even allow that. We also
     * have an Android-specific hack to alter the default permissions.
     */
public static FileDescriptor open(String path, int flags) throws FileNotFoundException {
    FileDescriptor fd = null;
    try {
        // On Android, we don't want default permissions to allow global access.
        int mode = ((flags & O_ACCMODE) == O_RDONLY) ? 0 : 0600;
        fd = Libcore.os.open(path, flags, mode);
        if (fd.valid()) {
            // Java disallows reading directories too.
            if (S_ISDIR(Libcore.os.fstat(fd).st_mode)) {
                throw new ErrnoException("open", EISDIR);
            }
        }
        return fd;
    } catch (ErrnoException errnoException) {
        try {
            if (fd != null) {
                IoUtils.close(fd);
            }
        } catch (IOException ignored) {
        }
        FileNotFoundException ex = new FileNotFoundException(path + ": " + errnoException.getMessage());
        ex.initCause(errnoException);
        throw ex;
    }
}