Fixed a couple of issues, removed ruby-level signal handling again

src/ruby/ext/grpc/rb_completion_queue.c

@@ -62,13 +62,10 @@ static void *grpc_rb_completion_queue_next_no_gil(void *param) {
   gpr_timespec deadline;
   do {
     deadline = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), increment);
-    if (gpr_time_cmp(deadline, next_call->timeout) > 0) {
-      // Then we have run out of time
-      break;
-    }
     next_call->event = grpc_completion_queue_next(next_call->cq,
                                                   deadline, NULL);
-    if (next_call->event.success) {
+    if (next_call->event.type != GRPC_QUEUE_TIMEOUT ||
+        gpr_time_cmp(deadline, next_call->timeout) > 0) {
       break;
     }
   } while (!next_call->interrupted);
@@ -82,14 +79,11 @@ static void *grpc_rb_completion_queue_pluck_no_gil(void *param) {
   gpr_timespec deadline;
   do {
     deadline = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), increment);
-    if (gpr_time_cmp(deadline, next_call->timeout) > 0) {
-      // Then we have run out of time
-      break;
-    }
     next_call->event = grpc_completion_queue_pluck(next_call->cq,
                                                    next_call->tag,
                                                    deadline, NULL);
-    if (next_call->event.type != GRPC_QUEUE_TIMEOUT) {
+    if (next_call->event.type != GRPC_QUEUE_TIMEOUT ||
+        gpr_time_cmp(deadline, next_call->timeout) > 0) {
       break;
     }
   } while (!next_call->interrupted);
@@ -195,8 +189,8 @@ grpc_event grpc_rb_completion_queue_pluck_event(VALUE self, VALUE tag,
 
      The basic reason we need this relatively complicated construction is that
      we need to re-acquire the GVL when an interrupt comes in, so that the ruby
-     interpeter can do what it needs to do with the interrupt. But we also need
-     to get back to plucking when */
+     interpreter can do what it needs to do with the interrupt. But we also need
+     to get back to plucking when the interrupt has been handled. */
   do {
     next_call.interrupted = 0;
     rb_thread_call_without_gvl(grpc_rb_completion_queue_pluck_no_gil,

src/ruby/lib/grpc.rb

@@ -33,7 +33,6 @@ require_relative 'grpc/errors'
 require_relative 'grpc/grpc'
 require_relative 'grpc/logconfig'
 require_relative 'grpc/notifier'
-require_relative 'grpc/signals'
 require_relative 'grpc/version'
 require_relative 'grpc/core/time_consts'
 require_relative 'grpc/generic/active_call'
@@ -48,5 +47,3 @@ begin
 ensure
   file.close
 end
-
-GRPC::Signals.init

src/ruby/lib/grpc/generic/active_call.rb

@@ -123,10 +123,6 @@ module GRPC
       @unmarshal = unmarshal
       @metadata_tag = metadata_tag
       @op_notifier = nil
-      weak_self = WeakRef.new(self)
-      signal_handler = proc { weak_self.cancel if weak_self.weakref_alive? }
-      remove_handler = GRPC::Signals.register_handler(&signal_handler)
-      ObjectSpace.define_finalizer(self, remove_handler)
     end
 
     # output_metadata are provides access to hash that can be used to

src/ruby/lib/grpc/generic/rpc_server.rb

@@ -353,10 +353,7 @@ module GRPC
         transition_running_state(:running)
         @run_cond.broadcast
       end
-      remove_signal_handler = GRPC::Signals.register_handler { stop }
       loop_handle_server_calls
-      # Remove signal handler when server stops
-      remove_signal_handler.call
     end
 
     alias_method :run_till_terminated, :run

src/ruby/lib/grpc/signals.rb

@@ -1,68 +0,0 @@
-# Copyright 2016, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-require 'thread'
-require_relative 'grpc'
-
-# GRPC contains the General RPC module.
-module GRPC
-  # Signals contains gRPC functions related to signal handling
-  module Signals
-    @signal_handlers = []
-    @handlers_mutex = Mutex.new
-    @previous_handlers = {}
-    # @signal_received = false
-
-    def register_handler(&handler)
-      @handlers_mutex.synchronize do
-        @signal_handlers.push(handler)
-        # handler.call if @signal_received
-      end
-      # Returns a function to remove the handler
-      lambda do
-        @handlers_mutex.synchronize { @signal_handlers.delete(handler) }
-      end
-    end
-    module_function :register_handler
-
-    def run_handlers(signal)
-      # @signal_received = true
-      @signal_handlers.each(&:call)
-      @previous_handlers[signal].call
-    end
-    module_function :run_handlers
-
-    def init
-      %w(INT TERM).each do |sig|
-        @previous_handlers[sig] = Signal.trap(sig) { run_handlers(sig) }
-      end
-    end
-    module_function :init
-  end
-end