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| author | Ulrich Drepper <drepper@redhat.com> | 2003-03-20 07:19:17 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2003-03-20 07:19:17 +0000 |
| commit | 4009bf404450e4ad7b72140d7bae3226fad3468c (patch) | |
| tree | 175b2211f0ae10f837a3822c08cb2b989663725a /bits/atomic.h | |
| parent | 85b5767c57eecaad6aea0967444f5e5d42a4cc17 (diff) | |
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Update.
2003-03-19 Ulrich Drepper <drepper@redhat.com>
* Makefile (distribute): Add include/atomic.h and bits/atomic.h.
* include/atomic.h: New file.
* sysdeps/i386/i486/bits/atomic.h: New file.
* sysdeps/x86_64/bits/atomic.h: New file.
* sysdeps/s390/bits/atomic.h: New file.
* sysdeps/sh/bits/atomic.h: New file.
* sysdeps/ia64/bits/atomic.h: New file.
* sysdeps/powerpc/bits/atomic.h: New file.
* sysdeps/generic/bits/atomic.h: New file.
* sysdeps/i386/i486/atomicity.h: Removed.
* sysdeps/x86_64/atomicity.h: Removed.
* sysdeps/s390/s390-32/atomicity.h: Removed.
* sysdeps/s390/s390-64/atomicity.h: Removed.
* sysdeps/ia64/atomicity.h: Removed.
* sysdeps/powerpc/powerpc32/atomicity.h: Removed.
* sysdeps/powerpc/powerpc64/atomicity.h: Removed.
* elf/dl-profile.c: Use atomic.h instead of atomicity.h. Adjust
use of macros from atomicity.h to new names and semantics.
* gmon_mcount.c: Likewise.
* malloc/set-freeres.c: Likewise.
* nscd/cache.c: Likewise.
* stdlib/cxa_finalize.c: Likewise.
* sysdeps/unix/sysv/linux/getsysstats.c: Likewise.
* sysdeps/mips/ieee754.h: New file, suitable to replace both
* stdlib/strtod.c (INTERNAL): While eating trailing zeros handle
Diffstat (limited to 'bits/atomic.h')
| -rw-r--r-- | bits/atomic.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/bits/atomic.h b/bits/atomic.h new file mode 100644 index 0000000000..7595b407ca --- /dev/null +++ b/bits/atomic.h @@ -0,0 +1,31 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _BITS_ATOMIC_H +#define _BITS_ATOMIC_H 1 + +/* We have by default no support for atomic operations. So define + them non-atomic. If this is a problem somebody will have to come + up with real definitions. */ + +/* The only basic operation needed is compare and exchange. */ +#define arch_compare_and_exchange_acq(mem, newval, oldval) \ + ({ *(mem) == (oldval) ? 1 : (*(mem) = (newval), 0); }) + +#endif /* bits/atomic.h */ |