Returning back to WASM multi-threading after COOP/COEP put a spanner in the
works when I last tried it. Unfortunately, the Emscripten toolchain has
much changed since I last managed to compile a multi-threaded build.
Specifically, I am running into what looks like a trivial problem. This
code won't compile:
#include <emscripten/threading.h>
#include <stdio.h>
static void a(int arg) {
printf("Hello %i\n", arg);
}
int main(int argc, char **argv) {
em_queued_call q = {
.functionEnum = EM_FUNC_SIG_VI,
.functionPtr = a
};
q.args[0].i = 42;
emscripten_sync_run_in_main_thread(&q);
}
Specifically, the struct em_queued_call is only partially defined (as per
emscripten/threading.h
<https://github.com/emscripten-core/emscripten/blob/main/system/include/emscripten/threading.h#L49>),
where the full definition (in threading_internal.h
<https://github.com/emscripten-core/emscripten/blob/main/system/lib/pthread/threading_internal.h#L23>)
is not included.
I am compiling like so:
emcc -pthread test.c
Doesn't get any simpler. I remember this worked with an old Emscripten
version 1.XX, but no more.
Any ideas?
Soeren
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