add small-memory-footprint option to configure

This adds the following option to configure:
--enable-small-memory-footprint

When enabled the following defines are set
to reduce the overall memory footprint.

MESSAGE_SIZE_MAX=1024*64
MESSAGE_QUEUE_MAX=512
PROCESSOR_COUNT_MAX=16
IPC_REQUEST_SIZE=1024*64
IPC_RESPONSE_SIZE=1024*64
IPC_DISPATCH_SIZE=1024*64




git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@2410 fd59a12c-fef9-0310-b244-a6a79926bd2f

configure.ac

@@ -192,6 +192,10 @@ AC_ARG_ENABLE([coverage],
 	[  --enable-coverage       : coverage analysis of the codebase. ],
 	[ default="no" ])
 
+AC_ARG_ENABLE([small-memory-footprint],
+	[  --enable-small-memory-footprint : Use small message queues and small messages sizes. ],
+	[ default="no" ])
+
 AC_ARG_ENABLE([nss],
 	[  --enable-nss            : Network Security Services encryption. ],,
 	[ enable_nss="yes" ])
@@ -353,6 +357,12 @@ else
 	COVERAGE_LDFLAGS=""
 fi
 
+
+if test "x${enable_small_memory_footprint}" = xyes ; then
+	AC_DEFINE_UNQUOTED([HAVE_SMALL_MEMORY_FOOTPRINT], 1, [have small_memory_footprint])
+	PACKAGE_FEATURES="$PACKAGE_FEATURES small-memory-footprint"
+fi
+
 if test "x${enable_ansi}" = xyes && \
 		cc_supports_flag -std=iso9899:199409 ; then
 	AC_MSG_NOTICE([Enabling ANSI Compatibility])

include/corosync/corodefs.h

@@ -60,7 +60,11 @@ enum corosync_service_types {
 	AMF_V2_SERVICE = 17
 };
 
-#define PROCESSOR_COUNT_MAX	384
+#ifdef HAVE_SMALL_MEMORY_FOOTPRINT
+#define PROCESSOR_COUNT_MAX 16
+#else
+#define PROCESSOR_COUNT_MAX 384
+#endif /* HAVE_SMALL_MEMORY_FOOTPRINT */
 
 #define TOTEMIP_ADDRLEN (sizeof(struct in6_addr))
 

include/corosync/engine/coroapi.h

@@ -65,16 +65,17 @@ struct corosync_tpg_group {
 
 #define TOTEMIP_ADDRLEN (sizeof(struct in6_addr))
 
-#define PROCESSOR_COUNT_MAX 384
 #define INTERFACE_MAX 2
 
-#ifndef MESSAGE_SIZE_MAX
+#ifdef HAVE_SMALL_MEMORY_FOOTPRINT
+#define PROCESSOR_COUNT_MAX	16
+#define MESSAGE_SIZE_MAX	1024*64
+#define MESSAGE_QUEUE_MAX	512
+#else
+#define PROCESSOR_COUNT_MAX	384
 #define MESSAGE_SIZE_MAX	1024*1024 /* (1MB) */
-#endif /* MESSAGE_SIZE_MAX */
-
-#ifndef MESSAGE_QUEUE_MAX
-#define MESSAGE_QUEUE_MAX MESSAGE_SIZE_MAX / totem_config->net_mtu
-#endif /* MESSAGE_QUEUE_MAX */
+#define MESSAGE_QUEUE_MAX	MESSAGE_SIZE_MAX / totem_config->net_mtu
+#endif /* HAVE_SMALL_MEMORY_FOOTPRINT */
 
 #define TOTEM_AGREED	0
 #define TOTEM_SAFE	1

include/corosync/totem/totem.h

@@ -36,15 +36,16 @@
 #define TOTEM_H_DEFINED
 #include "totemip.h"
 
-#ifndef MESSAGE_SIZE_MAX
+#ifdef HAVE_SMALL_MEMORY_FOOTPRINT
+#define PROCESSOR_COUNT_MAX	16
+#define MESSAGE_SIZE_MAX	1024*64
+#define MESSAGE_QUEUE_MAX	512
+#else
+#define PROCESSOR_COUNT_MAX	384
 #define MESSAGE_SIZE_MAX	1024*1024 /* (1MB) */
-#endif /* MESSAGE_SIZE_MAX */
-
-#ifndef MESSAGE_QUEUE_MAX
-#define MESSAGE_QUEUE_MAX MESSAGE_SIZE_MAX / totem_config->net_mtu
-#endif /* MESSAGE_QUEUE_MAX */
+#define MESSAGE_QUEUE_MAX	MESSAGE_SIZE_MAX / totem_config->net_mtu
+#endif /* HAVE_SMALL_MEMORY_FOOTPRINT */
 
-#define PROCESSOR_COUNT_MAX	384
 #define FRAME_SIZE_MAX		10000
 #define TRANSMITS_ALLOWED	16
 #define SEND_THREADS_MAX	16

lib/util.h

@@ -53,8 +53,14 @@ static inline cs_error_t hdb_error_to_cs (int res)		\
 	}							\
 }
 
+#ifdef HAVE_SMALL_MEMORY_FOOTPRINT
+#define IPC_REQUEST_SIZE        1024*64
+#define IPC_RESPONSE_SIZE       1024*64
+#define IPC_DISPATCH_SIZE       1024*64
+#else
 #define IPC_REQUEST_SIZE        8192*128
 #define IPC_RESPONSE_SIZE       8192*128
 #define IPC_DISPATCH_SIZE       8192*128
+#endif /* HAVE_SMALL_MEMORY_FOOTPRINT */
 
 #endif /* AIS_UTIL_H_DEFINED */