Package java.util.concurrent.locks.ReentrantReadWriteLock

Examples of java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock

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         * {@inheritDoc}
         */
        @Override
        public void addObject(final K key) throws Exception,
                IllegalStateException, UnsupportedOperationException {
            WriteLock writeLock = readWriteLock.writeLock();
            writeLock.lock();
            try {
                keyedPool.addObject(key);
            } finally {
                writeLock.unlock();
            }
        }
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        /**
         * {@inheritDoc}
         */
        @Override
        public void clear() throws Exception, UnsupportedOperationException {
            WriteLock writeLock = readWriteLock.writeLock();
            writeLock.lock();
            try {
                keyedPool.clear();
            } finally {
                writeLock.unlock();
            }
        }
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         * {@inheritDoc}
         */
        @Override
        public void clear(final K key) throws Exception,
                UnsupportedOperationException {
            WriteLock writeLock = readWriteLock.writeLock();
            writeLock.lock();
            try {
                keyedPool.clear(key);
            } finally {
                writeLock.unlock();
            }
        }
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        /**
         * {@inheritDoc}
         */
        @Override
        public void close() {
            WriteLock writeLock = readWriteLock.writeLock();
            writeLock.lock();
            try {
                keyedPool.close();
            } catch (Exception e) {
                // swallowed as of Pool 2
            } finally {
                writeLock.unlock();
            }
        }
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        if (closed) {
            throw new IOException(sm.getString("apr.closed", Long.valueOf(socket)));
        }

        Lock readLock = wrapper.getBlockingStatusReadLock();
        WriteLock writeLock = wrapper.getBlockingStatusWriteLock();

        boolean readDone = false;
        int result = 0;
        readLock.lock();
        try {
            if (wrapper.getBlockingStatus() == block) {
                result = Socket.recv(socket, b, off, len);
                readDone = true;
            }
        } finally {
            readLock.unlock();
        }

        if (!readDone) {
            writeLock.lock();
            try {
                wrapper.setBlockingStatus(block);
                // Set the current settings for this socket
                Socket.optSet(socket, Socket.APR_SO_NONBLOCK, (block ? 0 : 1));
                // Downgrade the lock
                readLock.lock();
                try {
                    writeLock.unlock();
                    result = Socket.recv(socket, b, off, len);
                } finally {
                    readLock.unlock();
                }
            } finally {
                // Should have been released above but may not have been on some
                // exception paths
                if (writeLock.isHeldByCurrentThread()) {
                    writeLock.unlock();
                }
            }
        }

        if (result > 0) {
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    private synchronized void writeToSocket(boolean block) throws IOException {

        Lock readLock = wrapper.getBlockingStatusReadLock();
        WriteLock writeLock = wrapper.getBlockingStatusWriteLock();

        readLock.lock();
        try {
            if (wrapper.getBlockingStatus() == block) {
                writeToSocket();
                return;
            }
        } finally {
            readLock.unlock();
        }

        writeLock.lock();
        try {
            // Set the current settings for this socket
            wrapper.setBlockingStatus(block);
            if (block) {
                Socket.timeoutSet(socket, endpoint.getSoTimeout() * 1000);
            } else {
                Socket.timeoutSet(socket, 0);
            }

            // Downgrade the lock
            readLock.lock();
            try {
                writeLock.unlock();
                writeToSocket();
            } finally {
                readLock.unlock();
            }
        } finally {
            // Should have been released above but may not have been on some
            // exception paths
            if (writeLock.isHeldByCurrentThread()) {
                writeLock.unlock();
            }
        }
    }
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    private int doReadSocket(boolean block) {

        Lock readLock = wrapper.getBlockingStatusReadLock();
        WriteLock writeLock = wrapper.getBlockingStatusWriteLock();

        boolean readDone = false;
        int result = 0;
        readLock.lock();
        try {
            if (wrapper.getBlockingStatus() == block) {
                result = Socket.recvbb(socket, 0, buf.length - lastValid);
                readDone = true;
            }
        } finally {
            readLock.unlock();
        }

        if (!readDone) {
            writeLock.lock();
            try {
                wrapper.setBlockingStatus(block);
                // Set the current settings for this socket
                if (block) {
                    Socket.optSet(socket, Socket.APR_SO_NONBLOCK, 0);
                } else {
                    Socket.optSet(socket, Socket.APR_SO_NONBLOCK, 1);
                    Socket.timeoutSet(socket, 0);
                }
                // Downgrade the lock
                readLock.lock();
                try {
                    writeLock.unlock();
                    result = Socket.recvbb(socket, 0, buf.length - lastValid);
                } finally {
                    readLock.unlock();
                }
            } finally {
                // Should have been released above but may not have been on some
                // exception paths
                if (writeLock.isHeldByCurrentThread()) {
                    writeLock.unlock();
                }
            }
        }

        return result;
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    private int writeSocket(int pos, int len, boolean block) {

        Lock readLock = socketWrapper.getBlockingStatusReadLock();
        WriteLock writeLock = socketWrapper.getBlockingStatusWriteLock();
        long socket = socketWrapper.getSocket().longValue();

        boolean writeDone = false;
        int result = 0;
        readLock.lock();
        try {
            if (socketWrapper.getBlockingStatus() == block) {
                result = Socket.sendbb(socket, pos, len);
                writeDone = true;
            }
        } finally {
            readLock.unlock();
        }

        if (!writeDone) {
            writeLock.lock();
            try {
                socketWrapper.setBlockingStatus(block);
                // Set the current settings for this socket
                Socket.optSet(socket, Socket.APR_SO_NONBLOCK, (block ? 0 : 1));
                // Downgrade the lock
                readLock.lock();
                try {
                    writeLock.unlock();
                    result = Socket.sendbb(socket, pos, len);
                } finally {
                    readLock.unlock();
                }
            } finally {
                // Should have been released above but may not have been on some
                // exception paths
                if (writeLock.isHeldByCurrentThread()) {
                    writeLock.unlock();
                }
            }
        }

        return result;
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    private int readSocket(int pos, int len, boolean block) {

        Lock readLock = socketWrapper.getBlockingStatusReadLock();
        WriteLock writeLock = socketWrapper.getBlockingStatusWriteLock();
        long socket = socketWrapper.getSocket().longValue();

        boolean readDone = false;
        int result = 0;
        readLock.lock();
        try {
            if (socketWrapper.getBlockingStatus() == block) {
                result = Socket.recvbb(socket, pos, len);
                readDone = true;
            }
        } finally {
            readLock.unlock();
        }

        if (!readDone) {
            writeLock.lock();
            try {
                socketWrapper.setBlockingStatus(block);
                // Set the current settings for this socket
                Socket.optSet(socket, Socket.APR_SO_NONBLOCK, (block ? 0 : 1));
                // Downgrade the lock
                readLock.lock();
                try {
                    writeLock.unlock();
                    result = Socket.recvbb(socket, pos, len);
                } finally {
                    readLock.unlock();
                }
            } finally {
                // Should have been released above but may not have been on some
                // exception paths
                if (writeLock.isHeldByCurrentThread()) {
                    writeLock.unlock();
                }
            }
        }

        return result;
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        if (closed) {
            throw new IOException(sm.getString("apr.closed", Long.valueOf(socket)));
        }

        Lock readLock = socketWrapper.getBlockingStatusReadLock();
        WriteLock writeLock = socketWrapper.getBlockingStatusWriteLock();

        readLock.lock();
        try {
            if (socketWrapper.getBlockingStatus() == block) {
                return doWriteInternal(b, off, len);
            }
        } finally {
            readLock.unlock();
        }

        writeLock.lock();
        try {
            // Set the current settings for this socket
            socketWrapper.setBlockingStatus(block);
            if (block) {
                Socket.timeoutSet(socket, endpoint.getSoTimeout() * 1000);
            } else {
                Socket.timeoutSet(socket, 0);
            }

            // Downgrade the lock
            readLock.lock();
            try {
                writeLock.unlock();
                return doWriteInternal(b, off, len);
            } finally {
                readLock.unlock();
            }
        } finally {
            // Should have been released above but may not have been on some
            // exception paths
            if (writeLock.isHeldByCurrentThread()) {
                writeLock.unlock();
            }
        }
    }
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