OPENDJ-3179: Migrate LDAP Connection Handler to SDK Grizzly transport

Yannick Lecaillez

08.42.2016 ede52c8f25aa2b7815e006cdfd6fe09f0766b548

 opendj-grizzly/src/main/java/org/forgerock/opendj/grizzly/ServerTCPNIOTransport.java

@@ -20,6 +20,7 @@

import org.forgerock.i18n.LocalizableMessage;
import org.forgerock.i18n.slf4j.LocalizedLogger;
import org.glassfish.grizzly.memory.PooledMemoryManager;
import org.glassfish.grizzly.nio.transport.TCPNIOTransport;
import org.glassfish.grizzly.nio.transport.TCPNIOTransportBuilder;
import org.glassfish.grizzly.strategies.SameThreadIOStrategy;
@@ -36,6 +37,7 @@

    private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
    static final ServerTCPNIOTransport SERVER_TRANSPORT = new ServerTCPNIOTransport();
    private static final long MB = 1024 * 1024;

    private ServerTCPNIOTransport() {
        // Prevent instantiation.
@@ -96,6 +98,24 @@
            // Enabled by default.
            builder.setReuseAddress(Boolean.parseBoolean(reuseAddressStr));
        }
        float heapPercent;
        if (Runtime.getRuntime().maxMemory() < 1024 * MB) {
            // Low heap
            heapPercent = 0.01f;
        } else {
            // Compute a percentage to try to reach roughly 64Mb (big enough (tm))
            heapPercent = 64f * MB / Runtime.getRuntime().maxMemory();
        }
        // Force usage of PooledMemoryManager which allows to use grizzly's buffers across threads.
        builder.setMemoryManager(new PooledMemoryManager(
                1024,  // Initial buffer size
                3,     // Number of pools (with growing factor below this give us pools of 1K, 4K, 16k buffers)
                4,     // Growing factor to apply on the size of the buffer polled by the next pool
                selectorThreadCount,    // Number of pool slices that every pool will stripe allocation requests across
                heapPercent, // The percentage of the heap that this manager will use when populating the pools (5%)
                1f,    // The percentage of buffers to be pre-allocated during MemoryManager initialization (100%)
                true   // true to use direct buffers or false to use heap buffers
        ));

        final TCPNIOTransport transport = builder.build();