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d2d7b5bbb6
The root of the problem is that ./configure mixed together two different things. One is the availability of GCC atomic operation intrinsics. The other is the selection of which primitives to use for my_atomic implementation. Then at some point a hack was made to not use GCC intrinsics in my_atomic to work around some test failures. But because the two things are mixed in ./configure, this as a side effect also makes GCC intrinsics unavailable for XtraDB. Fixed by splitting this in two in configure, so that we have HAVE_GCC_ATOMIC_BUILTINS for GCC intrinsics availability and MY_ATOMIC_MODE_GCC_BUILTINS for use in my_atomic.
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* Copyright (C) 2006 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#if defined(__i386__) || defined(_MSC_VER) || \
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defined(__x86_64__) || defined(MY_ATOMIC_MODE_GCC_BUILTINS)
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# ifdef MY_ATOMIC_MODE_DUMMY
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# define LOCK_prefix ""
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# else
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# define LOCK_prefix "lock"
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# endif
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# ifdef MY_ATOMIC_MODE_GCC_BUILTINS
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# include "gcc_builtins.h"
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# elif __GNUC__
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# include "x86-gcc.h"
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# elif defined(_MSC_VER)
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# include "generic-msvc.h"
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# endif
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#endif
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#ifdef make_atomic_cas_body
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typedef char my_atomic_rwlock_t __attribute__ ((unused));
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#define my_atomic_rwlock_destroy(name)
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#define my_atomic_rwlock_init(name)
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#define my_atomic_rwlock_rdlock(name)
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#define my_atomic_rwlock_wrlock(name)
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#define my_atomic_rwlock_rdunlock(name)
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#define my_atomic_rwlock_wrunlock(name)
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#endif
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