Want a C Vector with Stack Storage? Check out Chromium\'s StackVector!

STL-Like Vector with Stack Storage

While crafting custom solutions, developers often seek established alternatives. For those seeking a C vector equivalent that utilizes stack storage, Chromium's stack_container.h library offers a viable solution.

The library features a StackVector class that mimics the functionality of a regular vector. However, it stores data within a stack-allocated array. This approach avoids heap allocations, enhancing efficiency and reducing overhead.

Using StackVector

The StackVector class allows for flexible buffer allocation. One way to employ it is by specifying the buffer size as a template parameter, as shown below:

<code class="cpp">StackVector<int, 128> stack_vector;</code>

This allocates a stack buffer capable of storing up to 128 integers. If the buffer size is exceeded, the allocator seamlessly switches to heap allocation, ensuring uninterrupted operation.

Drop-in Replacement

As mentioned by the original poster, the StackVector class can act as a drop-in replacement for standard vectors. Code that operates on vectors can be adapted to work with StackVectors simply by passing the StackVector allocator as the second parameter.

Custom Allocator

For those who prefer to use their own custom allocator, the STL provides the ability to specify an allocator as a constructor parameter. This allows for fine-tuned control over memory management and resource utilization.

Conclusion

The Chromium stack_container.h library provides an efficient and flexible solution for managing data on the stack. Its StackVector class closely emulates the functionality of STL vectors, making it easy to integrate into existing codebase while harnessing the advantages of stack storage.

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