Examples of org.apache.tomcat.util.threads.LimitLatch$Sync

org.apache.tomcat.util.threads.LimitLatch
Shared latch that allows the latch to be acquired a limited number of times after which all subsequent requests to acquire the latch will be placed in a FIFO queue until one of the shares is returned.




    private int maxConnections = 10000;
    public void setMaxConnections(int maxCon) {
        this.maxConnections = maxCon;
        LimitLatch latch = this.connectionLimitLatch;
        if (latch != null) {
            // Update the latch that enforces this
            if (maxCon == -1) {
                releaseConnectionLatch();
            } else {
                latch.setLimit(maxCon);
            }
        } else if (maxCon > 0) {
            initializeConnectionLatch();
        }
    }

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     * actual count of connections that are being served.
     *
     * @return The count
     */
    public long getConnectionCount() {
        LimitLatch latch = connectionLimitLatch;
        if (latch != null) {
            return latch.getCount();
        }
        return -1;
    }

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    public abstract boolean getUsePolling();


    protected LimitLatch initializeConnectionLatch() {
        if (maxConnections==-1) return null;
        if (connectionLimitLatch==null) {
            connectionLimitLatch = new LimitLatch(getMaxConnections());
        }
        return connectionLimitLatch;
    }

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        }
        return connectionLimitLatch;
    }


    protected void releaseConnectionLatch() {
        LimitLatch latch = connectionLimitLatch;
        if (latch!=null) latch.releaseAll();
        connectionLimitLatch = null;
    }

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        connectionLimitLatch = null;
    }


    protected void countUpOrAwaitConnection() throws InterruptedException {
        if (maxConnections==-1) return;
        LimitLatch latch = connectionLimitLatch;
        if (latch!=null) latch.countUpOrAwait();
    }

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        if (latch!=null) latch.countUpOrAwait();
    }


    protected long countDownConnection() {
        if (maxConnections==-1) return -1;
        LimitLatch latch = connectionLimitLatch;
        if (latch!=null) {
            long result = latch.countDown();
            if (result<0) {
                getLog().warn("Incorrect connection count, multiple socket.close called on the same socket." );
            }
            return result;
        } else return -1;

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    private int maxConnections = 10000;
    public void setMaxConnections(int maxCon) {
        this.maxConnections = maxCon;
        LimitLatch latch = this.connectionLimitLatch;
        if (latch != null) {
            // Update the latch that enforces this
            if (maxCon == -1) {
                releaseConnectionLatch();
            } else {
                latch.setLimit(maxCon);
            }
        } else if (maxCon > 0) {
            initializeConnectionLatch();
        }
    }

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     * actual count of connections that are being served.
     *
     * @return The count
     */
    public long getConnectionCount() {
        LimitLatch latch = connectionLimitLatch;
        if (latch != null) {
            return latch.getCount();
        }
        return -1;
    }

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    public abstract boolean getUsePolling();


    protected LimitLatch initializeConnectionLatch() {
        if (maxConnections==-1) return null;
        if (connectionLimitLatch==null) {
            connectionLimitLatch = new LimitLatch(getMaxConnections());
        }
        return connectionLimitLatch;
    }

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        }
        return connectionLimitLatch;
    }


    protected void releaseConnectionLatch() {
        LimitLatch latch = connectionLimitLatch;
        if (latch!=null) latch.releaseAll();
        connectionLimitLatch = null;
    }

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