René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Make initial size of interpreter stacks configurable","articleBody":"# Description\n\nCurrently, the TinyWasm interpreter pre-allocates a fixed/hardcoded amount of memory for its stacks. While this works well in general-purpose environments, it poses challenges for constrained targets—particularly embedded systems.\n\nConcretely, I had the problem of not being able to run tw on an nrf53 due to OOM panics, until I reduced the initial size of the interpreter stacks.\n\nThis issue proposes making the interpreter's value stack size configurable by the user. This would:\n\n- Allow embedded developers to tune memory usage based on available resources.\n- Enable to address scenarios where the characteristics of the Wasm modules relevant for the target are known ahead of time (e.g., if they use only 32-bit values) by optimizing the pre-allocated stacks to the expected program type.\n\nThe proposed change is backward-compatible and would not affect users who rely on the default stack size.\n\nNote that this does not remedy the problem described in #42 : The stacks still grow dynamically and a Wasm module requiring enough memory on the interpreter side can still crash the program via an OOM panic.","author":{"url":"https://github.com/FedorSmirnov89","@type":"Person","name":"FedorSmirnov89"},"datePublished":"2025-07-12T07:44:04.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/43/tinywasm/issues/43"}