message: Just install the signal handler once
diff: @@ -15,6 +15,7 @@ use std::{
  mem,
  ptr::{self, NonNull},
  slice, str,
  + sync::Once,
  };
  use wasmer_runtime_core::{
  backend::{FuncResolver, ProtectedCaller, Token, UserTrapper},
  @@ -258,9 +259,11 @@ impl LLVMBackend {
  )
  };
  - unsafe {
  + static SIGNAL_HANDLER_INSTALLED: Once = Once::new();
  +
  + SIGNAL_HANDLER_INSTALLED.call_once(|| unsafe {
  crate::platform::install_signal_handler();
  - }
  + });
  if res != LLVMResult::OK {
  panic!("failed to load object")
  