diff --git a/configure.in b/configure.in index 2c9c472d7..889962086 100644 --- a/configure.in +++ b/configure.in @@ -1848,7 +1848,7 @@ AC_TRY_LINK(, [ ac_have_builtin_atomic=yes AC_MSG_RESULT([yes]) - AC_DEFINE(HAVE_BUILTIN_ATOMIC, 1, [Define to 1 if gcc supports __sync_bool_compare_and_swap() a.o.]) + AC_DEFINE(HAVE_BUILTIN_ATOMIC, 1, [Define to 1 if gcc supports __sync_bool_compare_and_swap() and __sync_add_and_fetch()]) ], [ ac_have_builtin_atomic=no @@ -1859,6 +1859,33 @@ CFLAGS=$safe_CFLAGS AM_CONDITIONAL([HAVE_BUILTIN_ATOMIC], [test x$ac_have_builtin_atomic = xyes]) +# does g++ have built-in functions for atomic memory access ? +AC_MSG_CHECKING([if g++ supports __sync_bool_compare_and_swap]) + +safe_CXXFLAGS=$CXXFLAGS +CXXFLAGS="$mflag_primary" + +AC_LANG_PUSH(C++) +AC_TRY_LINK(, +[ + int variable = 1; + return (__sync_bool_compare_and_swap(&variable, 1, 2) + && __sync_add_and_fetch(&variable, 1) ? 1 : 0) +], +[ + ac_have_builtin_atomic_cxx=yes + AC_MSG_RESULT([yes]) + AC_DEFINE(HAVE_BUILTIN_ATOMIC_CXX, 1, [Define to 1 if g++ supports __sync_bool_compare_and_swap() and __sync_add_and_fetch()]) +], +[ + ac_have_builtin_atomic_cxx=no + AC_MSG_RESULT([no]) +]) +AC_LANG_POP(C++) + +CXXFLAGS=$safe_CXXFLAGS + +AM_CONDITIONAL([HAVE_BUILTIN_ATOMIC_CXX], [test x$ac_have_builtin_atomic_cxx = xyes]) #---------------------------------------------------------------------------- # Ok. We're done checking. diff --git a/drd/tests/Makefile.am b/drd/tests/Makefile.am index 62f74625c..2a259558b 100644 --- a/drd/tests/Makefile.am +++ b/drd/tests/Makefile.am @@ -323,9 +323,13 @@ if HAVE_BUILTIN_ATOMIC check_PROGRAMS += \ annotate_barrier \ annotate_rwlock \ - annotate_smart_pointer \ atomic_var \ - circular_buffer \ + circular_buffer +endif + +if HAVE_BUILTIN_ATOMIC_CXX +check_PROGRAMS += \ + annotate_smart_pointer \ tsan_unittest endif