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How does genericobjectpool work in Apache Commons pool?
When coupled with the appropriate PooledObjectFactory , GenericObjectPool provides robust pooling functionality for arbitrary objects. Optionally, one may configure the pool to examine and possibly evict objects as they sit idle in the pool and to ensure that a minimum number of idle objects are available.
How to borrow object from Apache Commons pool?
Borrows an object from the pool using the specific waiting time which only applies if BaseGenericObjectPool.getBlockWhenExhausted () is true. Borrows an object from the pool using the specific waiting time which only applies if BaseGenericObjectPool.getBlockWhenExhausted () is true.
What happens if validation fails in basegenericobjectpool?
If validation fails, a NoSuchElementException is thrown. If the pool is exhausted (no available idle instances and no capacity to create new ones), this method will either block (if BaseGenericObjectPool.getBlockWhenExhausted () is true) or throw a NoSuchElementException (if BaseGenericObjectPool.getBlockWhenExhausted () is false).
When to use nosuchelementexception in Apache Commons pool?
NoSuchElementException – when the pool is exhausted and cannot or will not return another instance. Borrows an object from the pool using the specific waiting time which only applies if BaseGenericObjectPool.getBlockWhenExhausted () is true.
Which is object pool for allocating generic objects?
I try to follow CppCoreGuidelines everywhere but some things are too low level so they are in C-style C++ (e.g. memset and memcpy ). ObjectPool.hpp:
Is the single header object pool cross platform?
I made a single header object pool for use in personal projects. It’s supposed to be easy to use, cross-platform and thread safe. It uses a free list for allocations and a hashmap for dereferencing handles.
How to get rid of idle objects in pool?
Clears any objects sitting idle in the pool by removing them from the idle instance pool and then invoking the configured PooledObjectFactory.destroyObject (PooledObject) method on each idle instance. Closes the pool. Perform numTests idle object eviction tests, evicting examined objects that meet the criteria for eviction.
How to borrow an object from a pool?
Equivalent to borrowObject(BaseGenericObjectPool.getMaxWaitMillis ()). Borrows an object from the pool using the specific waiting time which only applies if BaseGenericObjectPool.getBlockWhenExhausted () is true.