Merge lp:~trond-norbye/drizzle/libumem into lp:~drizzle-trunk/drizzle/development

[Trond Norbye]

[Trond Norbye (trond-norbye)]

Allow the user to add --enable-umem to link with libumem instead of libmtmalloc. Libumem is often referred to as "a userspace implementation of the slab allocator in the Solaris kernel", and provides a fast and scalable object caching. In addition to just being a memory allocator, it also provides great debugging functionality, such as: detecting memory leaks, buffer overruns, multiple free, use of uninitialized data etc.

[Monty Taylor (mordred)]

Looks great. At some point, we should also add an error if the user requests both of those options.

review: Approve

=== modified file 'configure.ac'
--- configure.ac	2009-06-30 18:09:07 +0000
+++ configure.ac	2009-07-08 10:33:58 +0000
@@ -348,7 +348,16 @@
       [ac_enable_mtmalloc="$enableval"],
       [ac_enable_mtmalloc="yes"])
 
-    if test "x$ac_enable_mtmalloc" != "xno"
+    AC_ARG_ENABLE([umem],
+      [AS_HELP_STRING([--enable-umem],
+         [Enable linking with libumem @<:@default=off@:>@])],
+      [ac_enable_umem="$enableval"],
+      [ac_enable_umem="no"])
+
+    if test "x$ac_enable_umem" = "xyes"
+    then
+      AC_CHECK_LIB(umem,malloc,[],[])
+    elif test "x$ac_enable_mtmalloc" != "xno"
     then
       AC_CHECK_LIB(mtmalloc,malloc,[],[])
     fi