build: add option to compile with ThreadSanitizer

ThreadSanitizer is a debugging tool that can detect threads that race
for data modifications. These races can result in data corruption and
are difficult to track and fix.

Change-Id: Ibbdaf17c811e30e79cd5bdcf9cd9ff2d0cdb2abb
URL: https://github.com/google/sanitizers/wiki/ThreadSanitizerCppManual
Reported-by: Yaniv Kaul <ykaul@redhat.com>
Fixes: #543
Signed-off-by: Niels de Vos <ndevos@redhat.com>

configure.ac

@@ -299,6 +299,19 @@ else
         BUILD_ASAN=no
 fi
 
+AC_ARG_ENABLE([atan],
+              AC_HELP_STRING([--enable-tsan],
+                             [Enable ThreadSanitizer support]))
+if test "x$enable_tsan" = "xyes"; then
+        BUILD_TSAN=yes
+        AC_CHECK_LIB([tsan], [__tsan_init], ,
+                [AC_MSG_ERROR([libtsan.so not found, this is required for --enable-tsan])])
+        GF_CFLAGS="${GF_CFLAGS} -O2 -g -fsanitize=thread"
+        GF_LDFLAGS="${GF_LDFLAGS} -ltsan"
+else
+        BUILD_TSAN=no
+fi
+
 
 dnl When possible, prefer libtirpc over glibc rpc.
 dnl
@@ -1597,6 +1610,7 @@ echo "georeplication       : $BUILD_SYNCDAEMON"
 echo "Linux-AIO            : $BUILD_LIBAIO"
 echo "Enable Debug         : $BUILD_DEBUG"
 echo "Enable ASAN          : $BUILD_ASAN"
+echo "Enable TSAN          : $BUILD_TSAN"
 echo "Use syslog           : $USE_SYSLOG"
 echo "XML output           : $BUILD_XML_OUTPUT"
 echo "Encryption xlator    : $BUILD_CRYPT_XLATOR"

glusterfs.spec.in

@@ -112,6 +112,15 @@
 %global _without_syslog --disable-syslog
 %endif
 
+# tsan
+# if you wish to compile an rpm with thread sanitizer...
+# rpmbuild -ta @PACKAGE_NAME@-@PACKAGE_VERSION@.tar.gz --with tsan
+%{?_with_tsan:%global _with_tsan --enable-tsan}
+
+%if ( 0%{?rhel} && 0%{?rhel} < 7 )
+%global _with_tsan %{nil}
+%endif
+
 # valgrind
 # if you wish to compile an rpm to run all processes under valgrind...
 # rpmbuild -ta @PACKAGE_NAME@-@PACKAGE_VERSION@.tar.gz --with valgrind
@@ -247,6 +256,9 @@ Requires:         %{name}-libs%{?_isa} = %{version}-%{release}
 %if 0%{?_with_asan:1} && !( 0%{?rhel} && 0%{?rhel} < 7 )
 BuildRequires:    libasan
 %endif
+%if 0%{?_with_tsan:1} && !( 0%{?rhel} && 0%{?rhel} < 7 )
+BuildRequires:    libtsan
+%endif
 BuildRequires:    bison flex
 BuildRequires:    gcc make libtool
 BuildRequires:    ncurses-devel readline-devel
@@ -684,6 +696,7 @@ done
         %{?_with_firewalld} \
         %{?_with_gnfs} \
         %{?_with_tmpfilesdir} \
+        %{?_with_tsan} \
         %{?_with_valgrind} \
         %{?_without_epoll} \
         %{?_without_events} \
@@ -1373,6 +1386,9 @@ exit 0
 %endif
 
 %changelog
+* Tue Nov 13 2018 Niels de Vos <ndevos@redhat.com>
+- Add an option to build with ThreadSanitizer (TSAN)
+
 * Fri Sep 7 2018 Niels de Vos <ndevos@redhat.com>
 - Add an option to build with address sanitizer (ASAN)