private static ThreadLocal<Map> threadLocalCache = new ThreadLocal<>(); public static void setCache(Map value) { threadLocalCache.set(value); } public static Map getCache() { return threadLocalCache.get(); } public static void removeCache() { threadLocalCache.remove(); } public static v...
当localCache 的值被重置之后 cacheInstance 被 ThreadLocalMap 中的 value 引用,无法被 GC,但是其 key 对 ThreadLocal 实例的引用是一个弱引用。 本来ThreadLocal 的实例被 localCache 和 ThreadLocalMap 的 key 同时引用,但是当 localCache 的引用被重置之后,则 ThreadLocal 的实例只有 ThreadLocalMap 的 key ...
ThreadLocalCache localCache)throws Throwable{Object[]args=joinpoint.getArgs();Method method=((MethodSignature)joinpoint.getSignature()).getMethod();String className=joinpoint.getTarget().getClass().getName();String methodName=method.getName();String key...
publicclassThreadLocalCache {privatestaticThreadLocal<Map<String, Object>> cache=newThreadLocal<Map<String,Object>>();/*** 从ThreadLocal里获取缓存的值 *@paramkey 要获取的数据的KEY *@return要获取的值*/publicstaticObject getCache(String key) { ...
returnt.threadLocals; } getMap方法直接返回当前Thread的threadLocals变量,这样说明了之所以说ThreadLocal是线程局部变量就是因为它只是通过ThreadLocal把变量存在了Thread本身而已。 createMap方法 voidcreateMap(Threadt,T firstValue){ t.threadLocals=newThreadLocalMap(this,firstValue); ...
Processor has separate cache memory per thread assuming processor will handle fixed number of such threads pinned to it for execution. It helps us to increase performance of threads which access similar data for a long time.SHARMA, PRATIK
final class PoolThreadLocalCache extends FastThreadLocal<PoolThreadCache> { @Override protected synchronized PoolThreadCache initialValue() { final PoolArena<byte[]> heapArena = leastUsedArena(heapArenas); final PoolArena<ByteBuffer> directArena = leastUsedArena(directArenas); Thread current = Thread.cu...
当 localCache 的值被重置之后 cacheInstance 被 ThreadLocalMap 中的 value 引用,无法被 GC,但是其 ...
Cache是由很多个cache line组成的。每个cache line通常是64字节,并且它有效地引用主内存中的一块儿地址。一个Java的long类型变量是8字节,因此在一个缓存行中可以存8个long类型的变量。 CPU每次从主存中拉取数据时,会把相邻的数据也存入同一个cache line。