Process#stop: make sure the full process tree is killed (on Unix). See …

…#66.

.gitignore

@@ -20,5 +20,6 @@ pkg
 .rbx
 Gemfile.lock
 .ruby-version
+.bundle
 
 ## PROJECT::SPECIFIC

lib/childprocess/unix/fork_exec_process.rb

@@ -18,6 +18,8 @@ def launch_process
         end
 
         @pid = fork {
+          ::Process.setpgid 0, 0 # same process group as parent
+
           if @cwd
             Dir.chdir(@cwd)
           end

lib/childprocess/unix/posix_spawn_process.rb

@@ -34,11 +34,8 @@ def launch_process
           actions.add_close fileno_for(writer)
         end
 
-        if defined? Platform::POSIX_SPAWN_USEVFORK
-          flags |= Platform::POSIX_SPAWN_USEVFORK
-        end
-
-        attrs.flags = flags
+        attrs.flags = flags | Platform::POSIX_SPAWN_SETPGROUP
+        attrs.flags |= Platform::POSIX_SPAWN_USEVFORK if defined? Platform::POSIX_SPAWN_USEVFORK
 
         # wrap in helper classes in order to avoid GC'ed pointers
         argv = Argv.new(@args)

lib/childprocess/unix/process.rb

@@ -66,7 +66,7 @@ def send_signal(sig)
         assert_started
 
         log "sending #{sig}"
-        ::Process.kill sig, @pid
+        ::Process.kill sig, -@pid
       end
 
     end # Process