Function run

pub fn run(module: &mut Module) -> Result<Option<ThreadCount>, Error>

Execute the transformation on the parsed Wasm module specified.

This function will prepare Module to be run on multiple threads, performing steps such as:

• All data segments are switched to “passive” data segments to ensure they’re only initialized once (coming later)
• If memory is exported from this module, it is instead switched to being imported (with the same parameters).
• The imported memory is required to be shared, ensuring it’s backed by a SharedArrayBuffer on the web.
• A global for a thread ID is injected.
• Four bytes in linear memory are reserved for the counter of thread IDs.
• A start function is injected (or prepended if one already exists) which initializes memory for the first thread and otherwise allocates thread ids for all threads.
• Some stack space is prepared for each thread after the first one.

More and/or less may happen here over time, stay tuned!