Intel® oneAPI Threading Building Blocks Developer Guide and API Reference
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Visible to Intel only — GUID: GUID-EB051FB7-743A-4461-9EE4-ACEA8C4E12B3
fixed_pool
A class for scalable memory allocation from a buffer of fixed size.
Description
fixed_pool allocates and frees memory in a way that scales with the number of processors. All the memory available for the allocation is initially passed through arguments of the constructor. fixed_pool meet the Memory Pool named requirement.
API
Header
#include "oneapi/tbb/memory_pool.h"
Synopsis
namespace oneapi {
namespace tbb {
class fixed_pool {
public:
fixed_pool(void *buffer, size_t size);
fixed_pool(const fixed_pool& other) = delete;
fixed_pool& operator=(const fixed_pool& other) = delete;
~fixed_pool();
void recycle();
void* malloc(size_t size);
void free(void* ptr);
void* realloc(void* ptr, size_t size);
};
} // namespace tbb
} // namespace oneapi
Member Functions
fixed_pool(void*buffer, size_tsize)
Effects: Constructs a memory pool to manage the memory of size size pointed to by buffer. Throws the bad_alloc exception if the library fails to construct an instance of the class.
Examples
The code below provides a simple example of allocation from a fixed pool.
#define TBB_PREVIEW_MEMORY_POOL 1 #include "oneapi/tbb/memory_pool.h" ... char buf[1024*1024]; oneapi::tbb::fixed_pool my_pool(buf, 1024*1024); void* my_ptr = my_pool.malloc(10); my_pool.free(my_ptr);}