Worker doesn't released until executing sleep(1) in the Main Thread

[aharondavid]

emcc 3.1.55

Worker is stuck on reading a file :
read -> _fd_read -> proxyToMainThread -> emscripten_futex_wait

it released after a few (10) seconds.
but if we execute a sleep(1) in the main thread loop, it release immediately.

The file is not accessed by the main thread, how it can be explained ?

[aharondavid]

I figure it out:
the main thread, is fire a lot of proxyToMainThread calls for GL processing.

I wander why the _fd_read need to be executed in the Main Thread while the file is placed entirely in the memory.

[sbc100]

I believe the new wasmfs filesystem (-sWASMFS) keep the memfs in shared memory and therefore doesn't need proxying to read/writing to memfs files.