Template class for scalable memory allocation from memory blocks provided by an underlying allocator.
If the underlying allocator refers to another scalable memory pool, the inner pool (or pools) must be destroyed before the outer pool is destroyed or recycled.
template <typename Alloc> class memory_pool;
#define TBB_PREVIEW_MEMORY_POOL 1 #include "tbb/memory_pool.h"
A memory_pool allocates and frees memory in a way that scales with the number of processors. The memory is obtained as big chunks from an underlying allocator specified by the template argument. The latter must satisfy the subset of requirements described in Table 29 with allocate, deallocate, and value_type valid for sizeof(value_type)>0. A memory_pool models the Memory Pool concept described in Table 52.
#define TBB_PREVIEW_MEMORY_POOL 1 #include "tbb/memory_pool.h" ... tbb::memory_pool<std::allocator<char> > my_pool; void* my_ptr = my_pool.malloc(10); my_pool.free(my_ptr);
The code above provides a simple example of allocation from an extensible memory pool.
namespace tbb { template <typename Alloc> class memory_pool : no_copy { public: memory_pool(const Alloc &src = Alloc()) throw(std::bad_alloc); ~memory_pool(); void recycle(); void *malloc(size_t size); void free(void* ptr); void *realloc(void* ptr, size_t size); }; }
Member | Description |
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memory_pool(const Alloc &src = Alloc()) |
Constructs memory pool with an instance of underlying memory allocator of type Alloc copied from src. Throws bad_alloc exception if runtime fails to construct an instance of the class. |