more signal handling

src/core/worker_loop_.ml

@@ -144,22 +144,7 @@ module Fine_grained (Args : FINE_GRAINED_ARGS) () = struct
     if !state <> New then invalid_arg "worker_loop.setup: not a new instance";
     state := Ready;
 
-    if block_signals then (
-      try
-        ignore
-          (Unix.sigprocmask SIG_BLOCK
-             [
-               Sys.sigterm;
-               Sys.sigpipe;
-               Sys.sigint;
-               Sys.sigchld;
-               Sys.sigalrm;
-               Sys.sigusr1;
-               Sys.sigusr2;
-             ]
-            : _ list)
-      with _ -> ()
-    );
+    if block_signals then Signals_.ignore_signals_ ();
 
     TLS.set Runner.For_runner_implementors.k_cur_runner runner;
 

src/dpool/moonpool_dpool.ml

@@ -99,11 +99,7 @@ let domains_ : (worker_state option * Domain_.t option) Lock.t array =
       a [Pool.with_] or [Pool.create() … Pool.shutdown()] in a tight loop), and
       if nothing happens it tries to stop to free resources. *)
 let work_ idx (st : worker_state) : unit =
-  Thread.sigmask SIG_BLOCK
-    [
-      Sys.sigpipe; Sys.sigbus; Sys.sigterm; Sys.sigint; Sys.sigusr1; Sys.sigusr2;
-    ]
-  |> ignore;
+  Signals_.ignore_signals_ ();
   let main_loop () =
     let continue = ref true in
     while !continue do

src/private/signals_.ml

@@ -0,0 +1,15 @@
+let ignore_signals_ () =
+  try
+    Thread.sigmask SIG_BLOCK
+      [
+        Sys.sigpipe;
+        Sys.sigbus;
+        Sys.sigterm;
+        Sys.sigchld;
+        Sys.sigalrm;
+        Sys.sigint;
+        Sys.sigusr1;
+        Sys.sigusr2;
+      ]
+    |> ignore
+  with _ -> ()