blonded04 / concurrent-monotonic-buffer-allocator

Simple header-only C++20 concurrent monotonic buffer allocator that models the allocator requirements from the [allocator.requirements] ISO C++ section.

concurrent-monotonic-buffer-allocator

Simple thread-safe header-only C++-20 monotonic buffer allocator for testing STL-compliant concurrent data-structures.

Currently there are:

• cmb_allocator: concurrent monotonic buffer allocator;
• cmb_multiallocator: concurrent monotonic multibuffer allocator, may contain multiple buffers for better cache-coherence and less synchronization overhead.

Usage

Just #include <cmba/allocator.h> to your code:

#include <cmba/allocator.h>

#include <cstddef>
#include <cstdint>
#include <vector>

constexpr std::size_t k_elements_count = 100000;

int main() {
    std::vector<std::byte> buffer(k_elements_count * 256);
    // also possible: cmba::cmb_resource
    cmba::concurrent_monotonic_buffer_resource resource(buffer.data(), buffer.size());

    // also possible: cmba::cmb_allocator<int>
    cmba::concurrent_monotonic_buffer_allocator<int> allocator_int(&resource);

    std::vector<int, cmba::cmb_allocator<int>> container_vector(allocator_int);
    container_vector.reserve(k_elements_count);
    for (int i = 0; i < k_elements_count; i++) {
        container_vector.push_back(i + 10);
    }
    container_vector.push_back(2004);  // reallocation happens
}

You may also want to see other examples.

License

This code is licensed under The Unlicense, which means that you are free to do anything you want with this code.