fix shutdown loop.

lib/bitcoind.js

@@ -30,6 +30,10 @@ Bitcoin.prototype.__proto__ = EventEmitter.prototype;
 Bitcoin.prototype.start = function(callback) {
   var self = this;
 
+  var none = {};
+  var exitCaught = none;
+  var errorCaught = none;
+
   this.log_pipe = bitcoindjs.start(function(err, status) {
     if (callback) {
       callback(err);
@@ -42,12 +46,29 @@ Bitcoin.prototype.start = function(callback) {
       self.emit('open', status);
     }
 
-    function stop() {
+    process.on('SIGINT', self.stop.bind(self));
-      return self.stop();
+    process.on('SIGHUP', self.stop.bind(self));
-    }
 
-    process.on('SIGINT', stop);
+    var exit = process.exit;
-    process.on('SIGHUP', stop);
+    self._exit = function() {
+      return exit.apply(process, arguments);
+    };
+
+    process.exit = function(code) {
+      exitCaught = code || 0;
+      if (!self._shutdown) {
+        return self._exit(exitCaught);
+      }
+      self.stop();
+    };
+
+    process.on('uncaughtException', function(err) {
+      errorCaught = err;
+      if (!self._shutdown) {
+        return self._exit(exitCaught !== none ? exitCaught : 1);
+      }
+      self.stop();
+    });
   });
 
   // bitcoind's boost threads aren't in the thread pool
@@ -57,10 +78,23 @@ Bitcoin.prototype.start = function(callback) {
       self._stoppingSaid = true;
       self.log('shutting down...');
     }
+
     if (bitcoindjs.stopped()) {
       self.log('shut down.');
+
       clearInterval(self._shutdown);
       delete self._shutdown;
+
+      if (exitCaught !== none) {
+        return self._exit(0);
+      }
+
+      if (errorCaught !== none) {
+        if (errorCaught.stack) {
+          console.error(errorCaught.stack);
+        }
+        return self._exit(0);
+      }
     }
   }, 1000);