twemcache 2.6.2 release

.gitignore

@@ -4,6 +4,7 @@
 
 # Compiled Dynamic libraries
 *.so
+*.dylib
 
 # Compiled Static libraries
 *.la

COVERAGE.md

@@ -0,0 +1,22 @@
+# Twemcache Test Coverage
+
+To generate test coverage using gcov & lcov.
+
+## Requirement
+Have both gcov and lcov installed.
+
+## Build
+
+Configure Twemcache with no optimization and with gcov enabled
+```sh
+    CFLAGS="-ggdb3 -O0" ./configure --enable-debug=full --enable-gcov
+```
+
+## Collect data (running at project root level)
+```sh
+    lcov -c --no-external --rc lcov_branch_coverage=1 -i -b src/ -d src/ -o twemcache_base.info
+    make test
+    lcov -c --no-external --rc lcov_branch_coverage=1 -b src/ -d src/ -o twemcache_test.info
+    lcov -a twemcache_base.info -a twemcache_test.info --rc lcov_branch_coverage=1 -o twemcache_total.info
+    genhtml --ignore-errors source twemcache_total.info --legend --output-directory=/tmp/twemcache
+```

ChangeLog

@@ -1,3 +1,17 @@
+2015-09-01  Cache Team <[email protected]>
+	* twemcache: version 2.6.2 release
+	* Feature: adding "config maxbytes" command to adjust heap
+	* Feature: adding socket, memory, and context switch related stats
+	* Feature: adding max reporting for all gauges
+	* Fix: port signal handler patch from twemproxy
+	* Fix: update item_expire for flushed items
+	* Fix: updating settings.verbose when verbosity level changes
+	* Fix: adding long option form of -e
+	* Misc: changing default number of workers from 4 to 2
+	* Misc: downsizing default connection buffer
+	* Misc: lower ac requirements; making -rdynamic linux only
+	* Misc: added coverage support; COVERAGE.md for instructions
+
 2013-06-04  Cache Team <[email protected]>
 	* twemcache: version 2.6.0 release
 	* Fix: memory leak in suffix, with contribution from @ferlatum & @skuzmich

README.md

@@ -104,7 +104,7 @@ Eviction is triggered when a cache reaches full memory capacity. This happens wh
 * Slab LRA eviction (4) - choose the least recently accessed slab, and evict all items from it to reuse the slab.
 * Slab LRC eviction (8) - choose the least recently created slab, and evict all items from it to reuse the slab. Eviction ignores freeq & lruq to make sure the eviction follows the timestamp closely. Recommended if cache is updated on the write path.
 
-Eviction strategies can be *stacked*, in the order of higher to lower bit. For example, `-M 5` means that if slab LRU eviciton fails, Twemcache will try item LRU eviction.
+Eviction strategies can be *stacked*, in the order of higher to lower bit. For example, `-M 5` means that if slab LRA eviciton fails, Twemcache will try item LRU eviction.
 
 ## Observability
 

configure.ac

@@ -1,11 +1,11 @@
 # Define the package version numbers and the bug reporting address
 m4_define([MC_MAJOR], 2)
 m4_define([MC_MINOR], 6)
-m4_define([MC_PATCH], 0)
+m4_define([MC_PATCH], 2)
 m4_define([MC_BUGS], [[email protected]])
 
 # Initialize autoconf
-AC_PREREQ([2.64])
+AC_PREREQ([2.63])
 AC_INIT([twemcache], [MC_MAJOR.MC_MINOR.MC_PATCH], [MC_BUGS])
 AC_CONFIG_SRCDIR([src/mc.c])
 AC_CONFIG_AUX_DIR([config])
@@ -26,6 +26,15 @@ AC_DEFINE(MC_VERSION_STRING, "MC_MAJOR.MC_MINOR.MC_PATCH", [Define the version s
 # Checks for language
 AC_LANG([C])
 
+# Checks for OS and set OS variables
+AC_CANONICAL_HOST
+case $host_os in
+    linux*)   OS_LINUX=yes ;;
+    darwin*)  OS_DARWIN=yes ;;
+    *)        AC_MSG_ERROR([Your platform is not currently supported]) ;;
+esac
+AM_CONDITIONAL([RDYNAMIC], [test x$OS_LINUX = xyes])
+
 # Checks for programs
 AC_PROG_CC
 AC_PROG_INSTALL
@@ -142,7 +151,7 @@ AS_IF(
 trylibeventdir=""
 AC_ARG_WITH([libevent],
   [AS_HELP_STRING([--with-libevent=@<:@path@:>@], [specify path to libevent install])],
-  [trylibeventdir=$withval], []
+  [trylibeventdir=$withval], [trylibeventdir=]
 )
 LIBEVENT_URL=http://libevent.org
 AC_CACHE_CHECK([for libevent directory], [ac_cv_libevent_dir],
@@ -250,6 +259,28 @@ AS_CASE([x$enable_static],
   [AC_MSG_FAILURE([invalid value ${enable_static} for --enable-static])])
 AC_MSG_RESULT([$enable_static])
 
+AC_MSG_CHECKING([whether to enable test coverage])
+AC_ARG_ENABLE([gcov],
+  [AS_HELP_STRING(
+    [--enable-gcov],
+    [enable coverage testing with gcov]),
+  ],
+  [],
+  [enable_gcov=no])
+AS_CASE([x$enable_gcov],
+  [xyes], [
+            AC_DEFINE([HAVE_GCOV], [1], [Define to 1 if gcov is enabled])
+            GCOV_CFLAGS="-O0 -fprofile-arcs -ftest-coverage"
+            GCOV_LDFLAGS="-lgcov"
+          ],
+  [xno],  [
+        GCOV_CFLAGS=""
+        GCOV_LDFLAGS=""
+   ])
+AC_MSG_RESULT([$enable_gcov])
+AC_SUBST(GCOV_CFLAGS)
+AC_SUBST(GCOV_LDFLAGS)
+
 # Define Makefiles
 AC_CONFIG_FILES([Makefile
                  src/Makefile])