ruby-changes:17588
From: nobu <ko1@a...>
Date: Tue, 26 Oct 2010 09:13:47 +0900 (JST)
Subject: [ruby-changes:17588] Ruby:r29593 (trunk): * configure.in (rb_cv_gcc_atomic_builtins): check for atomic
nobu 2010-10-26 09:13:37 +0900 (Tue, 26 Oct 2010) New Revision: 29593 http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=29593 Log: * configure.in (rb_cv_gcc_atomic_builtins): check for atomic builtins, all are not available in Apple derivative gcc. Modified files: trunk/ChangeLog trunk/configure.in trunk/signal.c Index: configure.in =================================================================== --- configure.in (revision 29592) +++ configure.in (revision 29593) @@ -775,6 +775,19 @@ AC_DEFINE_UNQUOTED([RUBY_ALIAS_FUNCTION_VOID(prot, name, args)], [RUBY_ALIAS_FUNCTION_TYPE(void, prot, name, args)]) fi + AC_CACHE_CHECK([for atomic builtins], [rb_cv_gcc_atomic_builtins], [ + AC_TRY_LINK([unsigned char atomic_var;], + [ + __sync_lock_test_and_set(&atomic_var, 0); + __sync_lock_test_and_set(&atomic_var, 1); + __sync_fetch_and_add(&atomic_var, 1); + __sync_fetch_and_sub(&atomic_var, 1); + ], + [rb_cv_gcc_atomic_builtins=yes], + [rb_cv_gcc_atomic_builtins=no])]) + if test "$rb_cv_gcc_atomic_builtins" = yes; then + AC_DEFINE(HAVE_GCC_ATOMIC_BUILTINS) + fi fi AC_CACHE_CHECK(for exported function attribute, rb_cv_func_exported, [ Index: ChangeLog =================================================================== --- ChangeLog (revision 29592) +++ ChangeLog (revision 29593) @@ -1,3 +1,8 @@ +Tue Oct 26 09:13:34 2010 Nobuyoshi Nakada <nobu@r...> + + * configure.in (rb_cv_gcc_atomic_builtins): check for atomic + builtins, all are not available in Apple derivative gcc. + Tue Oct 26 00:29:26 2010 Nobuyoshi Nakada <nobu@r...> * Makefile.in (pkgconfig-data): create pkg-config metadata file. Index: signal.c =================================================================== --- signal.c (revision 29592) +++ signal.c (revision 29593) @@ -25,7 +25,7 @@ # define ATOMIC_INC(var) InterlockedIncrement(&(var)) # define ATOMIC_DEC(var) InterlockedDecrement(&(var)) -#elif __GNUC__ >= 4 +#elif defined HAVE_GCC_ATOMIC_BUILTINS /* @shyouhei hack to support atomic operations in case of gcc. Gcc * has its own pseudo-insns to support them. See info, or * http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html */ -- ML: ruby-changes@q... Info: http://www.atdot.net/~ko1/quickml/