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| author | Roland McGrath <roland@gnu.org> | 2003-03-22 23:01:01 +0000 |
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| committer | Roland McGrath <roland@gnu.org> | 2003-03-22 23:01:01 +0000 |
| commit | d15851ec24d31ccf3ee9a4a388104974d1f494dc (patch) | |
| tree | 6ad9a310067d563e20b58cd275fac04cdea53c04 /sysdeps/ia64 | |
| parent | 38ed16cf8860812f4f18d19a69fc031ab9da1156 (diff) | |
| download | glibc-d15851ec24d31ccf3ee9a4a388104974d1f494dc.tar.gz glibc-d15851ec24d31ccf3ee9a4a388104974d1f494dc.tar.xz glibc-d15851ec24d31ccf3ee9a4a388104974d1f494dc.zip | |
* include/atomic.h (atomic_increment_and_test): Invert sense of test.
Add comment. (atomic_decrement_and_test): Add comment. 2003-03-22 Jakub Jelinek <jakub@redhat.com> * include/atomic.h (atomic_compare_and_exchange_val_acq): Add comment. Don't define if __arch_compare_and_exchange_val_32_acq is not defined. (atomic_compare_and_exchange_bool_acq): Add comment. Don't use __oldval variable in the macro, since it might be macro argument. (atomic_decrement_if_positive): Initialize __memp, remove setting of non-existent variable. (atomic_bit_test_set): Cast 1 to __typeof (*mem) before shifting. * sysdeps/ia64/bits/atomic.h (atomic_exchange_and_add): Implement using atomic_compare_and_exchange_val_acq. (atomic_decrement_if_positive, atomic_bit_test_set): Define. * sysdeps/s390/bits/atomic.h (__arch_compare_and_exchange_val_8_acq): Renamed from... (__arch_compare_and_exchange_bool_8_acq): ... this. (__arch_compare_and_exchange_val_16_acq): Renamed from... (__arch_compare_and_exchange_bool_16_acq): ... this. (__arch_compare_and_exchange_val_32_acq): Return old value. Renamed from... (__arch_compare_and_exchange_bool_32_acq): ... this. (__arch_compare_and_exchange_val_64_acq): Return old value. Renamed from... (__arch_compare_and_exchange_bool_64_acq): ... this. (__arch_compare_and_exchange_val_32_acq): Use __typeof for local variables types instead of assuming int. Change prefix of local variables to __arch. * sysdeps/generic/bits/atomic.h (arch_compare_and_exchange_acq): Remove. (atomic_compare_and_exchange_val_acq, atomic_compare_and_exchange_bool_acq): Define. * csu/tst-atomic.c: New test. * csu/tst-atomic-long.c: New test. * csu/Makefile (tests): Add tst-atomic and tst-atomic-long. * malloc/memusagestat.c (main): Kill warning if uint64_t is ulong. * sysdeps/s390/Versions: Add trailing newline. * sysdeps/unix/sysv/linux/sysconf.c (__sysconf): Kill warning if INTERNAL_SYSCALL_ERROR_P doesn't use its first argument.
Diffstat (limited to 'sysdeps/ia64')
| -rw-r--r-- | sysdeps/ia64/bits/atomic.h | 71 |
1 files changed, 45 insertions, 26 deletions
diff --git a/sysdeps/ia64/bits/atomic.h b/sysdeps/ia64/bits/atomic.h index 27789c0a2e..68d79fa9ec 100644 --- a/sysdeps/ia64/bits/atomic.h +++ b/sysdeps/ia64/bits/atomic.h @@ -78,30 +78,49 @@ typedef uintmax_t uatomic_max_t; __sync_lock_test_and_set_si (mem, value) #define atomic_exchange_and_add(mem, value) \ - ({ \ - __typeof (*mem) __oldval, __val; \ - __typeof (mem) __memp = (mem); \ - __typeof (*mem) __value = (value); \ + ({ __typeof (*mem) __oldval, __val; \ + __typeof (mem) __memp = (mem); \ + __typeof (*mem) __value = (value); \ \ - __val = *__memp; \ - if (sizeof (*mem) == 4) \ - do \ - { \ - __oldval = __val; \ - __val = __arch_compare_and_exchange_32_val_acq (__memp, \ - __oldval + __value, \ - __oldval); \ - } \ - while (__builtin_expect (__val != __oldval, 0)); \ - else if (sizeof (*mem) == 8) \ - do \ - { \ - __oldval = __val; \ - __val = __arch_compare_and_exchange_64_val_acq (__memp, \ - __oldval + __value, \ - __oldval); \ - } \ - while (__builtin_expect (__val != __oldval, 0)); \ - else \ - abort (); \ - __oldval + __value; }) + __val = (*__memp); \ + do \ + { \ + __oldval = __val; \ + __val = atomic_compare_and_exchange_val_acq (__memp, \ + __oldval + __value, \ + __oldval); \ + } \ + while (__builtin_expect (__val != __oldval, 0)); \ + __oldval; }) + +#define atomic_decrement_if_positive(mem) \ + ({ __typeof (*mem) __oldval, __val; \ + __typeof (mem) __memp = (mem); \ + \ + __val = (*__memp); \ + do \ + { \ + __oldval = __val; \ + if (__builtin_expect (__val <= 0, 0)) \ + break; \ + __val = atomic_compare_and_exchange_val_acq (__memp, __oldval - 1, \ + __oldval); \ + } \ + while (__builtin_expect (__val != __oldval, 0)); \ + __oldval; }) + +#define atomic_bit_test_set(mem, bit) \ + ({ __typeof (*mem) __oldval, __val; \ + __typeof (mem) __memp = (mem); \ + __typeof (*mem) __mask = ((__typeof (*mem)) 1 << (bit)); \ + \ + __val = (*__memp); \ + do \ + { \ + __oldval = __val; \ + __val = atomic_compare_and_exchange_val_acq (__memp, \ + __oldval | __mask, \ + __oldval); \ + } \ + while (__builtin_expect (__val != __oldval, 0)); \ + __oldval & __mask; }) |