__sync family are legacy functions now and it is recommended
that new code use the __atomic functions.
http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html
* configure.in: check existence of __atomic functions.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43851 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ruby_atomic.h (ATOMIC_SIZE_SUB): add cast to suppress a warning by VC++.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43356 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ruby_atomic.h (ATOMIC_CAS): suppress C4022 and C4047 warnings in
VC6. only InterlockedCompareExchange is declared using PVOID.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41759 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ruby_atomic.h: Skip using Solaris10 atomic_ops on Solaris 9 or earlier if atomic.h is not available. [ruby-dev:47229] [Bug #8228]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40163 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ruby_atomic.h, signal.c (NEED_RUBY_ATOMIC_OPS): renamed from
NEED_RUBY_ATOMIC_EXCHANGE.
* signal.c (ruby_atomic_compare_and_swap): naive, non-atomic
compare-and-swap implementation only used for platforms without
valid support for atomic operations.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37897 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
on Solaris 10. [ruby-dev:46414] [Bug #7287]
* gc.c, signal.c, vm_core.h, common.mk: reflect the rename from atomic.h
to ruby_atomic.h.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37604 b2dd03c8-39d4-4d8f-98ff-823fe69b080e