consistently aborts immediately on ctrl-z (SIGTSTP)

pkg/urbit/daemon/main.c

@@ -530,13 +530,13 @@ report(void)
          H2O_LIBRARY_VERSION_PATCH);
 }
 
-void
+static void
 _stop_exit(c3_i int_i)
 {
-  u3l_log("\r\n[received keyboard stop signal, exiting]\r\n");
-  //  XX crashes if we haven't started a pier yet
+  //  explicit fprintf to avoid allocation in u3l_log
   //
-  u3_pier_exit(u3_pier_stub());
+  fprintf(stderr, "\r\n[received keyboard stop signal, exiting]\r\n");
+  u3_daemon_bail();
 }
 
 /*
@@ -664,6 +664,8 @@ main(c3_i   argc,
 
   //  Block profiling signal, which should be delievered to exactly one thread.
   //
+  //    XX review, may be unnecessary due to similar in u3m_init()
+  //
   if ( _(u3_Host.ops_u.pro) ) {
     sigset_t set;
 

pkg/urbit/include/vere/vere.h

@@ -1260,7 +1260,7 @@
         void
         u3_pier_exit(u3_pier* pir_u);
 
-      /* u3_pier_bail(): clean up all event state.
+      /* u3_pier_bail(): immediately shutdown..
       */
         void
         u3_pier_bail(void);
@@ -1334,6 +1334,11 @@
         void
         u3_daemon_commence();
 
+      /* u3_daemon_bail(): immediately shutdown.
+      */
+        void
+        u3_daemon_bail(void);
+
       /* u3_king_grab(): gc the daemon area
       */
         void

pkg/urbit/vere/daemon.c

@@ -796,6 +796,16 @@ u3_daemon_commence()
   exit(0);
 }
 
+/* u3_daemon_bail(): immediately shutdown.
+*/
+void
+u3_daemon_bail(void)
+{
+  _daemon_loop_exit();
+  u3_pier_bail();
+  exit(1);
+}
+
 /* u3_daemon_grab(): gc the daemon area
 */
 void

pkg/urbit/vere/pier.c

@@ -1985,14 +1985,16 @@ c3_rand(c3_w* rad_w)
   }
 }
 
-/* u3_pier_bail(): clean up all event state.
+/* u3_pier_bail(): immediately shutdown.
 */
 void
 u3_pier_bail(void)
 {
-  fflush(stdout);
-  u3_pier_exit(u3_pier_stub());
+  if ( 0 != u3K.len_w ) {
+    _pier_exit_done(u3_pier_stub());
+  }
 
+  fflush(stdout);
   exit(1);
 }