percallstack
Percallstack is a concept in programming that describes maintaining separate call stacks for individual units of work within a program, rather than using a single shared call stack per thread. In runtimes that support asynchronous execution, coroutines, or lightweight tasks, a per-call-stack architecture allows each task to suspend, resume, or unwind independently, preserving its own control-flow state without mutating a common thread stack.
Key characteristics include isolation of stack state to each task or coroutine, dynamic growth to accommodate
Applications and implications vary by platform. Per-call stacks can improve debugging and profiling by providing clearer
Design considerations include memory overhead, stack growth policies, and interaction with garbage collectors, native code interfaces,
Per-call stacks are related to broader concepts such as per-thread call stacks, stackful versus stackless coroutines,