[Fatal Error] When the amount of data is too large, errors occur

[cs-moushuai]

#include "../src/memory_pool.h"
// #include "../tmp/MemoryPool.h"


// #include "../src/allocate.h"

#include <vector>
#include <cstdlib>
#include <iostream>

std::vector<int, MemoryPool<int>> v;
// std::vector<int> v;
int main(void) {
    for (int i=0; i<100000000; i++) {
        int t = rand()%10;
        v.emplace_back(t);
        if (i % 100000 == 0)
            std::cout << i << "\n";
    }
    return 0;
}

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2000000
[1]    95072 segmentation fault  ./test

[chenjinxin3140101848]

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[JalanChao]

i have run and test your code.And my debug envornment is ubuntu22 linux 5.19 clang++ 14
The problem may caused by that the default blockSize is 4096.If you use AddressSanitizer you will find that the this code will always error at i==1021(1021*4+some util mem). Every time before you want to allocate a piece of memory from this pool ,you should find out if it has enough memory or catch the error. Or just set a1 bigger BlockSize.

[cs-moushuai]

i have run and test your code.And my debug envornment is ubuntu22 linux 5.19 clang++ 14 The problem may caused by that the default blockSize is 4096.If you use AddressSanitizer you will find that the this code will always error at i==1021(1021*4+some util mem). Every time before you want to allocate a piece of memory from this pool ,you should find out if it has enough memory or catch the error. Or just set a1 bigger BlockSize.

If there is not enough memory, shouldn't a new block be generated? Why increase the size of the block?

[yankaizhang20]

The allocate interface in MemoryPool only supports one object at a time as the note says. It's going to get worse when std::vector request the twice of the capicity.

[chenjinxin3140101848]

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