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perf[executor]: use & bits operation to improve performance

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godotg committed 2024-08-11 12:12:40 +08:00
1 parent 6b4ad5f7bd
commit 452723508b
2 files changed
+18 -13
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net/src/main/java/com/zfoo/net/task/TaskBus.java
+13 -10
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@@ -19,6 +19,7 @@ import com.zfoo.protocol.util.RandomUtils;
import com.zfoo.protocol.util.StringUtils;
import com.zfoo.protocol.util.ThreadUtils;
import io.netty.util.concurrent.FastThreadLocalThread;
import io.netty.util.internal.MathUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@@ -40,8 +41,9 @@ public final class TaskBus {
private static final Logger logger = LoggerFactory.getLogger(TaskBus.class);
// EN: The size of the thread pool can also be specified through the provider thread configuration
// CN: 线程池的大小，也可以通过provider thread配置指定
private static final int EXECUTOR_SIZE;
// CN: 线程池的大小，也可以通过provider thread配置指定，会通过EXECUTOR_MASK的与操作提高定位到Executor的性能
public static final int EXECUTOR_SIZE;
private static final int EXECUTOR_MASK;
/**
* EN: Use different thread pools to achieve isolation between thread pools without affecting each other
@@ -50,11 +52,13 @@ public final class TaskBus {
private static final ExecutorService[] executors;
static {
var localConfig = NetContext.getConfigManager().getLocalConfig();
var providerConfig = localConfig.getProvider();
EXECUTOR_SIZE = (providerConfig == null || StringUtils.isBlank(providerConfig.getThread())) ? (Runtime.getRuntime().availableProcessors() + 1) : Integer.parseInt(providerConfig.getThread());
var providerConfig = NetContext.getConfigManager().getLocalConfig().getProvider();
var expectThreads = (providerConfig == null || StringUtils.isBlank(providerConfig.getThread()))
? Runtime.getRuntime().availableProcessors()
: Integer.parseInt(providerConfig.getThread());
EXECUTOR_SIZE = MathUtil.safeFindNextPositivePowerOfTwo(expectThreads);
// if EXECUTOR_SIZE = 8 then EXECUTOR_MASK = 7 = 0b0111
EXECUTOR_MASK = EXECUTOR_SIZE - 1;
executors = new ExecutorService[EXECUTOR_SIZE];
for (int i = 0; i < executors.length; i++) {
var namedThreadFactory = new TaskThreadFactory(i);
@@ -89,8 +93,7 @@ public final class TaskBus {
private static int calTaskExecutorIndex(int taskExecutorHash) {
// Other hash algorithms can be customized to make the distribution more uniform
return Math.abs(taskExecutorHash % EXECUTOR_SIZE);
return taskExecutorHash & EXECUTOR_MASK;
}
public static int calTaskExecutorHash(Object argument) {
@@ -113,7 +116,7 @@ public final class TaskBus {
execute(calTaskExecutorHash(argument), runnable);
}
public static ExecutorService executorOf(int hash){
public static ExecutorService executorOf(int hash) {
return executors[calTaskExecutorIndex(hash)];
}