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* configure.in (rb_cv_gcc_atomic_builtins): check for atomic

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builtins, all are not available in Apple derivative gcc.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29593 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2010-10-26 00:13:37 +00:00
parent 3ea90fc38e
commit 7b410abfb8
3 changed files with 19 additions and 1 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Tue Oct 26 09:13:34 2010 Nobuyoshi Nakada <nobu@ruby-lang.org>
* 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@ruby-lang.org>
* Makefile.in (pkgconfig-data): create pkg-config metadata file.

13
configure.in
View file

@ -775,6 +775,19 @@ if test "$GCC" = yes; then
AC_DEFINE_UNQUOTED([RUBY_ALIAS_FUNCTION_VOID(prot, name, args)],
[RUBY_ALIAS_FUNCTION_TYPE(void, prot, name, args)])
fi
AC_CACHE_CHECK([for atomic builtins], [rb_cv_gcc_atomic_builtins], [
AC_TRY_LINK([unsigned char atomic_var;],
[
__sync_lock_test_and_set(&atomic_var, 0);
__sync_lock_test_and_set(&atomic_var, 1);
__sync_fetch_and_add(&atomic_var, 1);
__sync_fetch_and_sub(&atomic_var, 1);
],
[rb_cv_gcc_atomic_builtins=yes],
[rb_cv_gcc_atomic_builtins=no])])
if test "$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, [

2
signal.c
View file

@ -25,7 +25,7 @@ typedef LONG rb_atomic_t;
# 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 */