Thread‐safe multipool that manages memory via size‐tiered pools.

Synopsis

Declared in <bdlma_concurrentmultipool.h>

class ConcurrentMultipool;

Description

This class implements a memory manager that maintains a configurable number of bdlma::Pool objects, each dispensing memory blocks of a unique size. The Pool objects are placed in an array, with each successive pool managing memory blocks of size twice that of the previous pool. Each multipool allocation (deallocation) request allocates memory from (returns memory to) the internal pool having the smallest block size not less than the requested size, or, if no pool manages memory blocks of sufficient sized, from a separately managed list of memory blocks. Both the release method and the destructor of a bdema::Multipool release all memory currently allocated via the object.

Member Functions

Name

Description

ConcurrentMultipool [constructor]

Constructors

~ConcurrentMultipool [destructor]

Destroy this multipool. All memory allocated from this memory pool is released.

allocate

Return a contiguous block of maximally‐aligned memory of at least size.

allocator

Return the allocator used by this object to allocate memory. Note that this allocator can not be used to deallocate memory allocated through this pool.

deallocate

Relinquish the memory block at address back to this multipool.

deleteObject

Destroy and deallocate object using its dynamic type.

deleteObjectRaw

Destroy and deallocate object using its static type.

maxPooledBlockSize

Return the maximum size of memory blocks pooled by this multipool.

numPools

Return the number of pools managed by this multipool object.

release

Relinquish all memory currently allocated via this multipool object.

reserveCapacity

Reserve capacity for at least numBlocks blocks of the specified size.

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