The main thread is a little special on the Web since it can't block, which can cause issues (like pthread_create doesn't immediately create an available pthread

The main thread is a little special on the Web since it can't block, which can cause issues (like pthread_create doesn't immediately create an available pthread). There are workarounds for most of those issues (like pre-allocating a threadpool), and many applications work well, but sometimes not out of the box. See https://emscripten.org/docs/porting/pthreads.html#special-considerations https://emscripten.org/docs/porting/pthreads.html#special-co...