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A universal thread-safe memory pool
source link: https://www.tuicool.com/articles/hit/63YRVnJ
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ump
A universal thread-safe memory pool. This simple memory pool can be used if following conditions are satisfied:
(1) The memory sizes are some fixed numbers. E.g, 32
, 64
, 128
, etc, not random;
(2) The allocating memory operation is not so cheap, e.g., CUDA.
Example:
#include <cstdlib>
#include <iostream>
#include "ump.h"
int main()
{
UMP ump{malloc, free};
auto p1 = ump.allocate_memory(100);
std::cout << p1 << std::endl;
auto p2 = ump.allocate_memory(100);
std::cout << p2 << std::endl;
ump.free_memory(p1);
auto p3 = ump.allocate_memory(100);
std::cout << p3 << std::endl;
ump.free_memory(p2);
ump.free_memory(p3);
std::cout << ump.get_used_memory() << std::endl;
return 0;
}
Build and run it:
$ c++ -g -O2 -Wall main.cpp $ ./a.out 0x55db2b807160 0x55db2b807620 0x55db2b807160 200
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