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authorUlrich Drepper <drepper@redhat.com>2003-03-20 07:19:17 +0000
committerUlrich Drepper <drepper@redhat.com>2003-03-20 07:19:17 +0000
commit4009bf404450e4ad7b72140d7bae3226fad3468c (patch)
tree175b2211f0ae10f837a3822c08cb2b989663725a /include
parent85b5767c57eecaad6aea0967444f5e5d42a4cc17 (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 'include')
-rw-r--r--include/atomic.h141
1 files changed, 141 insertions, 0 deletions
diff --git a/include/atomic.h b/include/atomic.h
new file mode 100644
index 0000000..813fb80
--- /dev/null
+++ b/include/atomic.h
@@ -0,0 +1,141 @@
+/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ 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 _ATOMIC_H
+#define _ATOMIC_H 1
+
+#include <stdlib.h>
+
+#include <bits/atomic.h>
+
+
+#ifndef atomic_compare_and_exchange_acq
+# define atomic_compare_and_exchange_acq(mem, newval, oldval) \
+ ({ __typeof (__arch_compare_and_exchange_32_acq (mem, newval, oldval)) \
+ __result; \
+ if (sizeof (*mem) == 1) \
+ __result = __arch_compare_and_exchange_8_acq (mem, newval, oldval); \
+ else if (sizeof (*mem) == 2) \
+ __result = __arch_compare_and_exchange_16_acq (mem, newval, oldval); \
+ else if (sizeof (*mem) == 4) \
+ __result = __arch_compare_and_exchange_32_acq (mem, newval, oldval); \
+ else if (sizeof (*mem) == 8) \
+ __result = __arch_compare_and_exchange_64_acq (mem, newval, oldval); \
+ else \
+ abort (); \
+ __result; })
+#endif
+
+
+#ifndef atomic_compare_and_exchange_rel
+# define atomic_compare_and_exchange_rel(mem, oldval, newval) \
+ atomic_compare_and_exchange_acq (mem, oldval, newval)
+#endif
+
+
+#ifndef atomic_exchange_and_add
+# define atomic_exchange_and_add(mem, value) \
+ ({ __typeof (*mem) __oldval; \
+ __typeof (mem) __memp = (mem); \
+ __typeof (*mem) __value = (value); \
+ \
+ do \
+ __oldval = (*__memp); \
+ while (atomic_compare_and_exchange_acq (__memp, __oldval + __value, \
+ __oldval)); \
+ \
+ __oldval + __value; })
+#endif
+
+
+#ifndef atomic_add
+# define atomic_add(mem, value) (void) atomic_exchange_and_add (mem, value)
+#endif
+
+
+#ifndef atomic_increment
+# define atomic_increment(mem) atomic_add (mem, 1)
+#endif
+
+
+#ifndef atomic_increment_and_test
+# define atomic_increment_and_test(mem) \
+ (atomic_exchange_and_add (mem, 1) == 0)
+#endif
+
+
+#ifndef atomic_decrement
+# define atomic_decrement(mem) atomic_add (mem, -1)
+#endif
+
+
+#ifndef atomic_decrement_and_test
+# define atomic_decrement_and_test(mem) \
+ (atomic_exchange_and_add (mem, -1) == 0)
+#endif
+
+
+#ifndef atomic_add_negative
+# define atomic_add_negative(mem, value) \
+ (atomic_exchange_and_add (mem, value) < 0)
+#endif
+
+
+#ifndef atomic_add_zero
+# define atomic_add_zero(mem, value) \
+ (atomic_exchange_and_add (mem, value) == 0)
+#endif
+
+
+#ifndef atomic_bit_set
+# define atomic_bit_set(mem, bit) \
+ (void) atomic_bit_test_set(mem, bit)
+#endif
+
+
+#ifndef atomic_bit_test_set
+# define atomic_bit_test_set(mem, bit) \
+ ({ __typeof (*mem) __oldval; \
+ __typeof (mem) __memp = (mem); \
+ __typeof (*mem) __mask = (1 << (bit)); \
+ \
+ do \
+ __oldval = (*__memp); \
+ while (atomic_compare_and_exchange_acq (__memp, \
+ __oldval | __mask, __oldval)); \
+ \
+ __oldval & __mask; })
+#endif
+
+
+#ifndef atomic_full_barrier
+# define atomic_full_barrier() __asm ("" ::: "memory")
+#endif
+
+
+#ifndef atomic_read_barrier
+# define atomic_read_barrier() atomic_full_barrier()
+#endif
+
+
+#ifndef atomic_write_barrier
+# define atomic_write_barrier() atomic_full_barrier()
+#endif
+
+#endif /* atomic.h */