Introduce Mysql#blocking?; Set the file drescriptor for all new connections to non blocking; Add tests to the existing evented and threaded runs. ( verified 1.8 && 1.9 )

ext/mysql.c

@@ -60,6 +60,7 @@ struct mysql {
     MYSQL handler;
     char connection;
     char query_with_result;
+    char blocking;
 };
 
 struct mysql_res {
@@ -268,6 +269,11 @@ static VALUE real_connect(int argc, VALUE* argv, VALUE klass)
 
     myp->handler.reconnect = 0;
     myp->connection = Qtrue;
+    
+    my_bool was_blocking;
+    vio_blocking(myp->handler.net.vio, 0, &was_blocking);    
+    myp->blocking = vio_is_blocking( myp->handler.net.vio );
+
     myp->query_with_result = Qtrue;
     rb_obj_call_init(obj, argc, argv);
 
@@ -756,6 +762,11 @@ static VALUE socket(VALUE obj)
     return INT2NUM(m->net.fd);
 }
 
+/* blocking */
+static VALUE blocking(VALUE obj){
+  return ( GetMysqlStruct(obj)->blocking ? Qtrue : Qfalse );
+}
+
 /* readable(timeout=nil) */
 static VALUE readable( int argc, VALUE* argv, VALUE obj )
 {
@@ -2113,6 +2124,7 @@ void Init_mysql(void)
     rb_define_method(cMysql, "send_query", send_query, 1);
     rb_define_method(cMysql, "get_result", get_result, 0);
     rb_define_method(cMysql, "readable?", readable, -1);
+    rb_define_method(cMysql, "blocking?", blocking, 0);
     rb_define_method(cMysql, "socket", socket, 0);
     rb_define_method(cMysql, "refresh", refresh, 1);
     rb_define_method(cMysql, "reload", reload, 0);

lib/mysqlplus.rb

@@ -1,10 +1,12 @@
 require 'mysql'
 
 class Mysql
+  
   alias_method :c_async_query, :async_query
 
   def async_query(sql, timeout = nil)
     c_async_query(sql, timeout) if ENV['MYSQL_C_ASYNC_QUERY'] == '1'
+    puts "** Blocking ? #{blocking?().inspect}" if ENV['MYSQL_BLOCKING_STATUS'] == '1'
     send_query(sql)
     select [ (@sockets ||= {})[socket] ||= IO.new(socket) ], nil, nil, nil
     get_result

test/evented_test.rb

@@ -2,6 +2,7 @@ require File.dirname(__FILE__) + '/test_helper'
 
 EventedMysqlTest.new( 10 ) do |test|
   test.setup{ Mysql.real_connect('localhost','root') }
+  test.log_blocking_status = true
   test.run!
 end
 

test/test_helper.rb

@@ -11,7 +11,8 @@ class MysqlTest
                 :connection_signature,
                 :start,
                 :done,
-                :c_async_query
+                :c_async_query,
+                :log_blocking_status
   
   def initialize( queries )
     @queries = queries
@@ -27,8 +28,10 @@ class MysqlTest
   
   def run!
     c_or_native_ruby_async_query do
-      prepare
-      yield
+      with_blocking_status do
+        prepare
+        yield
+      end  
     end  
   end
   
@@ -67,6 +70,15 @@ class MysqlTest
     yield
   end
   
+  def with_blocking_status
+    if @log_blocking_status
+      ENV['MYSQL_BLOCKING_STATUS'] = '1'
+    else
+      ENV['MYSQL_BLOCKING_STATUS'] = '0'
+    end
+    yield
+  end
+  
 end
 
 class EventedMysqlTest < MysqlTest

test/threaded_test.rb

@@ -2,6 +2,7 @@ require File.dirname(__FILE__) + '/test_helper'
 
 ThreadedMysqlTest.new( 10 ) do |test|
   test.setup{ Mysql.real_connect('localhost','root') }
+  test.log_blocking_status = true
   test.run!
 end