The maximum size of the queue is 1024？ about concurrentqueue HOT 3 CLOSED

I have solved it by changing the BLOCK_SIZE, tks

from concurrentqueue.

Interesting! You're actually hitting the limit on the IMPLICIT_INITIAL_INDEX_SIZE. By default, this is 32, and so is the BLOCK_SIZE. Since no one is dequeueing from the queue, the index fills up (one entry is taken for each block inserted) until it's completely full. This happens after 32 blocks, which means 32*32 elements -- this is where the 1024 limit is coming from. try_enqueue is not allowed to allocate memory, so it fails when the block index is full.

I admit this is not something I had thought about when designing the queue. It's a little unfortunate. Sorry!

You'll need to change IMPLICIT_INITIAL_INDEX_SIZE (or EXPLICIT_INITIAL_INDEX_SIZE if using explicit tokens) to something at least as large as 10000000/BLOCK_SIZE if you want to enqueue without ever allocating new memory. A good balance would probably be blocks of around 1024-8192 and a corresponding index size of 16K-2K.

from concurrentqueue.

Tks for your reply. I got it . Tks very much!

from concurrentqueue.