initial commit

src/config.hpp

@@ -0,0 +1,71 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __ZS_CONFIG_HPP_INCLUDED__
+#define __ZS_CONFIG_HPP_INCLUDED__
+
+namespace zs
+{
+
+    //  Compile-time settings.
+
+    enum 
+    {
+
+        //  Number of new messages in message pipe needed to trigger new memory
+        //  allocation. Setting this parameter to 256 decreases the impact of
+        //  memory allocation by approximately 99.6%
+        message_pipe_granularity = 256,
+
+        //  Number of new commands in command pipe needed to trigger new memory
+        //  allocation. The number should  be kept low to decrease the memory
+        //  footprint of dispatcher.
+        command_pipe_granularity = 4,
+
+        //  Maximal batching size for engines with receiving functionality.
+        //  So, if there are 10 messages that fit into the batch size, all of
+        //  them may be read by a single 'recv' system call, thus avoiding
+        //  unnecessary network stack traversals.
+        in_batch_size = 8192,
+
+        //  Maximal batching size for engines with sending functionality.
+        //  So, if there are 10 messages that fit into the batch size, all of
+        //  them may be written by a single 'send' system call, thus avoiding
+        //  unnecessary network stack traversals.
+        out_batch_size = 8192,        
+
+        //  Maximum number of events the I/O thread can process in one go.
+        max_io_events = 256,
+
+        //  Maximal wait time for a timer (milliseconds).
+        max_timer_period = 100,
+
+        //  Maximal delay to process command in API thread (in CPU ticks).
+        //  3,000,000 ticks equals to 1 - 2 milliseconds on current CPUs.
+        max_command_delay = 3000000,
+
+        //  Maximal number of non-accepted connections that can be held by
+        //  TCP listener object.
+        tcp_connection_backlog = 10
+
+    };
+
+}
+
+#endif