java.util.concurrent

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ConcurrentModificationException Program in java HashMap

code: Map<Integer,DealCountUpdater> dealCountMap=new HashMap<Integer,DealCountUpdater>(); public void update(){[详细]

2023-02-13 15:42 分类：问答
Why is Java Future.get(timeout) Not Reliable?

Future.get(timeout) does not reliably throw the TimeoutException after the given timeout. Is this normal behavior or can I do something to make this more reliable? This test fails on my machine. Howev[详细]

2023-01-29 06:51 分类：问答
Guava MapMaker().weakKeys().makeMap() vs WeakHashMap

We have a Scala server that is getting a node tree using Protocol Buffers over a socket and we need to attach additional data to each node.[详细]

2023-01-25 17:44 分类：问答
Synchronization vs Lock

java.util.concurrent API provides a class called as Lock, which would basically serialize the control in order to access the critical resource. It gives method such as park() and unpark().[详细]

2023-01-25 17:42 分类：问答
What happens to a Thread that fails to acquire a Semaphore?

What happens when a thread cannot acquire a Semaphore (due to lack of permit). Will it be moved to the wait state?[详细]

2023-01-21 12:09 分类：问答
Thread safe Hash Map?

I am writing an application which will return a HashMap to user. User will get refer开发者_StackOverflowence to this MAP.[详细]

2023-01-06 13:49 分类：问答
ScheduledThreadPoolExecutor executing a wrong time because of CPU time discrepancy

I\'m scheduling a task using a Sched开发者_运维技巧uledThreadPoolExecutor object.I use the following method:[详细]

2022-12-28 14:02 分类：问答
ConcurrentLinkedQueue$Node remains in heap after remove()

I have a multithreaded app writing and reading a ConcurrentLinkedQueue, which is conceptually used to back entries in a list/table.I originally used a ConcurrentHashMap for this, which worked well.A n[详细]

2022-12-25 07:11 分类：问答
Is there java.util.concurrent equivalent for WeakHashMap?

Can the following piece of code be rewritten w/o using Collections.synchronizedMap() yet maintaining correctness at concurrency?[详细]

2022-12-20 14:03 分类：问答
java.util.concurrent vs. Boost Threads library

How do the Boost Thread libraries compare against the java.util.concurrent libraries? Performance is critical and so I would prefer to stay with C++ (although Java is a lot faster these days). Given[详细]

2022-12-12 01:04 分类：问答