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std::pmr::pool_options

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< cpp‎ | memory
 
 
 
Dynamic memory management
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(C++17)
(deprecated since c++17)
(deprecated since c++17)
(deprecated since c++17)
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Low level memory management
 
Defined in header <memory_resource>
struct pool_options;
(since C++17)

std::pmr::pool_options is a set of constructor options for pool resources including std::pmr::synchronized_pool_resource and std::pmr::unsynchronized_pool_resource.

[edit] Data members

Member Meaning
std::size_t max_blocks_per_chunk;
The maximum number of blocks that will be allocated at once from the upstream std::pmr::memory_resource to replenish the pool. If the value of max_blocks_per_chunk is zero or is greater than an implementation-defined limit, that limit is used instead. The implementation may choose to use a smaller value than is specified in this field and may use different values for different pools.
std::size_t largest_required_pool_block;
The largest allocation size that is required to be fulfilled using the pooling mechanism. Attempts to allocate a single block larger than this threshold will be allocated directly from the upstream std::pmr::memory_resource. If largest_required_pool_block is zero or is greater than an implementation-defined limit, that limit is used instead. The implementation may choose a pass-through threshold larger than specified in this field.


[edit] See also

a thread-safe std::pmr::memory_resource for managing allocations in pools of different block sizes
(class) [edit]
a thread-unsafe std::pmr::memory_resource for managing allocations in pools of different block sizes
(class) [edit]