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atomics: Remove unused atomics
Remove all unused atomics. Replace uses of catomic_increment and catomic_decrement with atomic_fetch_add_relaxed which maps to a standard compiler builtin. Relaxed memory ordering is correct for simple counters since they only need atomicity. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
@@ -553,7 +553,7 @@ _dl_mcount (ElfW(Addr) frompc, ElfW(Addr) selfpc)
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froms[newfromidx].here = &data[narcs];
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froms[newfromidx].here = &data[narcs];
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froms[newfromidx].link = tos[to_index];
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froms[newfromidx].link = tos[to_index];
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tos[to_index] = newfromidx;
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tos[to_index] = newfromidx;
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catomic_increment (&narcs);
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atomic_fetch_add_relaxed (&narcs, 1);
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}
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}
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/* If we still have no entry stop searching and insert. */
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/* If we still have no entry stop searching and insert. */
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434
include/atomic.h
434
include/atomic.h
@@ -19,18 +19,11 @@
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#ifndef _ATOMIC_H
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#ifndef _ATOMIC_H
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#define _ATOMIC_H 1
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#define _ATOMIC_H 1
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/* This header defines three types of macros:
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/* This header defines two types of macros:
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- atomic arithmetic and logic operation on memory. They all
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- atomic arithmetic and logic operation on memory. They all
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have the prefix "atomic_".
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have the prefix "atomic_".
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- conditionally atomic operations of the same kinds. These
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always behave identical but can be faster when atomicity
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is not really needed since only one thread has access to
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the memory location. In that case the code is slower in
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the multi-thread case. The interfaces have the prefix
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"catomic_".
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- support functions like barriers. They also have the prefix
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- support functions like barriers. They also have the prefix
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"atomic_".
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"atomic_".
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@@ -48,41 +41,6 @@
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#include <atomic-machine.h>
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#include <atomic-machine.h>
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/* Wrapper macros to call pre_NN_post (mem, ...) where NN is the
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bit width of *MEM. The calling macro puts parens around MEM
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and following args. */
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#define __atomic_val_bysize(pre, post, mem, ...) \
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({ \
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__typeof ((__typeof (*(mem))) *(mem)) __atg1_result; \
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if (sizeof (*mem) == 1) \
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__atg1_result = pre##_8_##post (mem, __VA_ARGS__); \
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else if (sizeof (*mem) == 2) \
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__atg1_result = pre##_16_##post (mem, __VA_ARGS__); \
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else if (sizeof (*mem) == 4) \
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__atg1_result = pre##_32_##post (mem, __VA_ARGS__); \
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else if (sizeof (*mem) == 8) \
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__atg1_result = pre##_64_##post (mem, __VA_ARGS__); \
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else \
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abort (); \
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__atg1_result; \
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})
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#define __atomic_bool_bysize(pre, post, mem, ...) \
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({ \
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int __atg2_result; \
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if (sizeof (*mem) == 1) \
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__atg2_result = pre##_8_##post (mem, __VA_ARGS__); \
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else if (sizeof (*mem) == 2) \
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__atg2_result = pre##_16_##post (mem, __VA_ARGS__); \
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else if (sizeof (*mem) == 4) \
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__atg2_result = pre##_32_##post (mem, __VA_ARGS__); \
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else if (sizeof (*mem) == 8) \
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__atg2_result = pre##_64_##post (mem, __VA_ARGS__); \
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else \
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abort (); \
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__atg2_result; \
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})
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#if USE_ATOMIC_COMPILER_BUILTINS
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# undef atomic_compare_and_exchange_val_acq
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# undef atomic_compare_and_exchange_val_acq
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# define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
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# define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
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@@ -107,159 +65,6 @@
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!atomic_compare_exchange_acquire (mem, (void*)&__atg3_old, newval); \
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!atomic_compare_exchange_acquire (mem, (void*)&__atg3_old, newval); \
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})
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})
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# undef atomic_exchange_and_add
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# define atomic_exchange_and_add(mem, val) atomic_fetch_add_relaxed(mem,val)
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#endif
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/* Atomically store NEWVAL in *MEM if *MEM is equal to OLDVAL.
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Return the old *MEM value. */
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#if !defined atomic_compare_and_exchange_val_acq \
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&& defined __arch_compare_and_exchange_val_32_acq
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# define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
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__atomic_val_bysize (__arch_compare_and_exchange_val,acq, \
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mem, newval, oldval)
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#endif
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#ifndef catomic_compare_and_exchange_val_acq
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# ifdef __arch_c_compare_and_exchange_val_32_acq
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# define catomic_compare_and_exchange_val_acq(mem, newval, oldval) \
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__atomic_val_bysize (__arch_c_compare_and_exchange_val,acq, \
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mem, newval, oldval)
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# else
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# define catomic_compare_and_exchange_val_acq(mem, newval, oldval) \
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atomic_compare_and_exchange_val_acq (mem, newval, oldval)
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# endif
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#endif
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#ifndef catomic_compare_and_exchange_val_rel
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# ifndef atomic_compare_and_exchange_val_rel
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# define catomic_compare_and_exchange_val_rel(mem, newval, oldval) \
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catomic_compare_and_exchange_val_acq (mem, newval, oldval)
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# else
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# define catomic_compare_and_exchange_val_rel(mem, newval, oldval) \
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atomic_compare_and_exchange_val_rel (mem, newval, oldval)
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# endif
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#endif
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#ifndef atomic_compare_and_exchange_val_rel
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# define atomic_compare_and_exchange_val_rel(mem, newval, oldval) \
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atomic_compare_and_exchange_val_acq (mem, newval, oldval)
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#endif
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/* Atomically store NEWVAL in *MEM if *MEM is equal to OLDVAL.
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Return zero if *MEM was changed or non-zero if no exchange happened. */
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#ifndef atomic_compare_and_exchange_bool_acq
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# ifdef __arch_compare_and_exchange_bool_32_acq
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# define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
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__atomic_bool_bysize (__arch_compare_and_exchange_bool,acq, \
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mem, newval, oldval)
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# else
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# define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
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({ /* Cannot use __oldval here, because macros later in this file might \
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call this macro with __oldval argument. */ \
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__typeof (oldval) __atg3_old = (oldval); \
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atomic_compare_and_exchange_val_acq (mem, newval, __atg3_old) \
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!= __atg3_old; \
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})
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# endif
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#endif
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#ifndef catomic_compare_and_exchange_bool_acq
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# ifdef __arch_c_compare_and_exchange_bool_32_acq
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# define catomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
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__atomic_bool_bysize (__arch_c_compare_and_exchange_bool,acq, \
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mem, newval, oldval)
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# else
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# define catomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
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({ /* Cannot use __oldval here, because macros later in this file might \
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call this macro with __oldval argument. */ \
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__typeof (oldval) __atg4_old = (oldval); \
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catomic_compare_and_exchange_val_acq (mem, newval, __atg4_old) \
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!= __atg4_old; \
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})
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# endif
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#endif
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/* Store NEWVALUE in *MEM and return the old value. */
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#ifndef atomic_exchange_acq
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# define atomic_exchange_acq(mem, newvalue) \
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({ __typeof ((__typeof (*(mem))) *(mem)) __atg5_oldval; \
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__typeof (mem) __atg5_memp = (mem); \
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__typeof ((__typeof (*(mem))) *(mem)) __atg5_value = (newvalue); \
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\
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do \
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__atg5_oldval = *__atg5_memp; \
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while (__builtin_expect \
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(atomic_compare_and_exchange_bool_acq (__atg5_memp, __atg5_value, \
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__atg5_oldval), 0)); \
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\
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__atg5_oldval; })
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#endif
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#ifndef atomic_exchange_rel
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# define atomic_exchange_rel(mem, newvalue) atomic_exchange_acq (mem, newvalue)
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#endif
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/* Add VALUE to *MEM and return the old value of *MEM. */
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#ifndef atomic_exchange_and_add_acq
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# ifdef atomic_exchange_and_add
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# define atomic_exchange_and_add_acq(mem, value) \
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atomic_exchange_and_add (mem, value)
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# else
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# define atomic_exchange_and_add_acq(mem, value) \
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({ __typeof (*(mem)) __atg6_oldval; \
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__typeof (mem) __atg6_memp = (mem); \
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__typeof (*(mem)) __atg6_value = (value); \
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\
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do \
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__atg6_oldval = *__atg6_memp; \
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while (__builtin_expect \
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(atomic_compare_and_exchange_bool_acq (__atg6_memp, \
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__atg6_oldval \
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+ __atg6_value, \
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__atg6_oldval), 0)); \
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\
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__atg6_oldval; })
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# endif
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#endif
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#ifndef atomic_exchange_and_add_rel
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# define atomic_exchange_and_add_rel(mem, value) \
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atomic_exchange_and_add_acq(mem, value)
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#endif
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#ifndef atomic_exchange_and_add
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# define atomic_exchange_and_add(mem, value) \
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atomic_exchange_and_add_acq(mem, value)
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#endif
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#ifndef catomic_exchange_and_add
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# define catomic_exchange_and_add(mem, value) \
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({ __typeof (*(mem)) __atg7_oldv; \
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__typeof (mem) __atg7_memp = (mem); \
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__typeof (*(mem)) __atg7_value = (value); \
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\
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do \
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__atg7_oldv = *__atg7_memp; \
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while (__builtin_expect \
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(catomic_compare_and_exchange_bool_acq (__atg7_memp, \
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__atg7_oldv \
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+ __atg7_value, \
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__atg7_oldv), 0)); \
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\
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__atg7_oldv; })
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#endif
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#ifndef atomic_max
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#ifndef atomic_max
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# define atomic_max(mem, value) \
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# define atomic_max(mem, value) \
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do { \
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do { \
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@@ -277,107 +82,6 @@
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#endif
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#endif
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#ifndef catomic_max
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# define catomic_max(mem, value) \
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do { \
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__typeof (*(mem)) __atg9_oldv; \
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__typeof (mem) __atg9_memp = (mem); \
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__typeof (*(mem)) __atg9_value = (value); \
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do { \
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__atg9_oldv = *__atg9_memp; \
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if (__atg9_oldv >= __atg9_value) \
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break; \
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} while (__builtin_expect \
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(catomic_compare_and_exchange_bool_acq (__atg9_memp, \
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__atg9_value, \
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__atg9_oldv), 0)); \
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} while (0)
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#endif
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#ifndef atomic_min
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# define atomic_min(mem, value) \
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do { \
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__typeof (*(mem)) __atg10_oldval; \
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__typeof (mem) __atg10_memp = (mem); \
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__typeof (*(mem)) __atg10_value = (value); \
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do { \
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__atg10_oldval = *__atg10_memp; \
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if (__atg10_oldval <= __atg10_value) \
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break; \
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} while (__builtin_expect \
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(atomic_compare_and_exchange_bool_acq (__atg10_memp, \
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__atg10_value, \
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__atg10_oldval), 0)); \
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} while (0)
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#endif
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#ifndef atomic_add
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# define atomic_add(mem, value) (void) atomic_exchange_and_add ((mem), (value))
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#endif
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#ifndef catomic_add
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# define catomic_add(mem, value) \
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(void) catomic_exchange_and_add ((mem), (value))
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#endif
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#ifndef atomic_increment
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# define atomic_increment(mem) atomic_add ((mem), 1)
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#endif
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#ifndef catomic_increment
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# define catomic_increment(mem) catomic_add ((mem), 1)
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#endif
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#ifndef atomic_increment_val
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# define atomic_increment_val(mem) (atomic_exchange_and_add ((mem), 1) + 1)
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#endif
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#ifndef catomic_increment_val
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# define catomic_increment_val(mem) (catomic_exchange_and_add ((mem), 1) + 1)
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#endif
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/* Add one to *MEM and return true iff it's now zero. */
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#ifndef atomic_increment_and_test
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# define atomic_increment_and_test(mem) \
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(atomic_exchange_and_add ((mem), 1) + 1 == 0)
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#endif
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#ifndef atomic_decrement
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# define atomic_decrement(mem) atomic_add ((mem), -1)
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#endif
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#ifndef catomic_decrement
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# define catomic_decrement(mem) catomic_add ((mem), -1)
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#endif
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#ifndef atomic_decrement_val
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# define atomic_decrement_val(mem) (atomic_exchange_and_add ((mem), -1) - 1)
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#endif
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#ifndef catomic_decrement_val
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# define catomic_decrement_val(mem) (catomic_exchange_and_add ((mem), -1) - 1)
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#endif
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/* Subtract 1 from *MEM and return true iff it's now zero. */
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#ifndef atomic_decrement_and_test
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# define atomic_decrement_and_test(mem) \
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(atomic_exchange_and_add ((mem), -1) == 1)
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#endif
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/* Decrement *MEM if it is > 0, and return the old value. */
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/* Decrement *MEM if it is > 0, and return the old value. */
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#ifndef atomic_decrement_if_positive
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#ifndef atomic_decrement_if_positive
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# define atomic_decrement_if_positive(mem) \
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# define atomic_decrement_if_positive(mem) \
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@@ -398,142 +102,6 @@
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#endif
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#endif
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#ifndef atomic_add_negative
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# define atomic_add_negative(mem, value) \
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({ __typeof (value) __atg12_value = (value); \
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atomic_exchange_and_add (mem, __atg12_value) < -__atg12_value; })
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#endif
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|
||||||
#ifndef atomic_add_zero
|
|
||||||
# define atomic_add_zero(mem, value) \
|
|
||||||
({ __typeof (value) __atg13_value = (value); \
|
|
||||||
atomic_exchange_and_add (mem, __atg13_value) == -__atg13_value; })
|
|
||||||
#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)) __atg14_old; \
|
|
||||||
__typeof (mem) __atg14_memp = (mem); \
|
|
||||||
__typeof (*(mem)) __atg14_mask = ((__typeof (*(mem))) 1 << (bit)); \
|
|
||||||
\
|
|
||||||
do \
|
|
||||||
__atg14_old = (*__atg14_memp); \
|
|
||||||
while (__builtin_expect \
|
|
||||||
(atomic_compare_and_exchange_bool_acq (__atg14_memp, \
|
|
||||||
__atg14_old | __atg14_mask,\
|
|
||||||
__atg14_old), 0)); \
|
|
||||||
\
|
|
||||||
__atg14_old & __atg14_mask; })
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/* Atomically *mem &= mask. */
|
|
||||||
#ifndef atomic_and
|
|
||||||
# define atomic_and(mem, mask) \
|
|
||||||
do { \
|
|
||||||
__typeof (*(mem)) __atg15_old; \
|
|
||||||
__typeof (mem) __atg15_memp = (mem); \
|
|
||||||
__typeof (*(mem)) __atg15_mask = (mask); \
|
|
||||||
\
|
|
||||||
do \
|
|
||||||
__atg15_old = (*__atg15_memp); \
|
|
||||||
while (__builtin_expect \
|
|
||||||
(atomic_compare_and_exchange_bool_acq (__atg15_memp, \
|
|
||||||
__atg15_old & __atg15_mask, \
|
|
||||||
__atg15_old), 0)); \
|
|
||||||
} while (0)
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifndef catomic_and
|
|
||||||
# define catomic_and(mem, mask) \
|
|
||||||
do { \
|
|
||||||
__typeof (*(mem)) __atg20_old; \
|
|
||||||
__typeof (mem) __atg20_memp = (mem); \
|
|
||||||
__typeof (*(mem)) __atg20_mask = (mask); \
|
|
||||||
\
|
|
||||||
do \
|
|
||||||
__atg20_old = (*__atg20_memp); \
|
|
||||||
while (__builtin_expect \
|
|
||||||
(catomic_compare_and_exchange_bool_acq (__atg20_memp, \
|
|
||||||
__atg20_old & __atg20_mask,\
|
|
||||||
__atg20_old), 0)); \
|
|
||||||
} while (0)
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/* Atomically *mem &= mask and return the old value of *mem. */
|
|
||||||
#ifndef atomic_and_val
|
|
||||||
# define atomic_and_val(mem, mask) \
|
|
||||||
({ __typeof (*(mem)) __atg16_old; \
|
|
||||||
__typeof (mem) __atg16_memp = (mem); \
|
|
||||||
__typeof (*(mem)) __atg16_mask = (mask); \
|
|
||||||
\
|
|
||||||
do \
|
|
||||||
__atg16_old = (*__atg16_memp); \
|
|
||||||
while (__builtin_expect \
|
|
||||||
(atomic_compare_and_exchange_bool_acq (__atg16_memp, \
|
|
||||||
__atg16_old & __atg16_mask,\
|
|
||||||
__atg16_old), 0)); \
|
|
||||||
\
|
|
||||||
__atg16_old; })
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/* Atomically *mem |= mask and return the old value of *mem. */
|
|
||||||
#ifndef atomic_or
|
|
||||||
# define atomic_or(mem, mask) \
|
|
||||||
do { \
|
|
||||||
__typeof (*(mem)) __atg17_old; \
|
|
||||||
__typeof (mem) __atg17_memp = (mem); \
|
|
||||||
__typeof (*(mem)) __atg17_mask = (mask); \
|
|
||||||
\
|
|
||||||
do \
|
|
||||||
__atg17_old = (*__atg17_memp); \
|
|
||||||
while (__builtin_expect \
|
|
||||||
(atomic_compare_and_exchange_bool_acq (__atg17_memp, \
|
|
||||||
__atg17_old | __atg17_mask, \
|
|
||||||
__atg17_old), 0)); \
|
|
||||||
} while (0)
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifndef catomic_or
|
|
||||||
# define catomic_or(mem, mask) \
|
|
||||||
do { \
|
|
||||||
__typeof (*(mem)) __atg18_old; \
|
|
||||||
__typeof (mem) __atg18_memp = (mem); \
|
|
||||||
__typeof (*(mem)) __atg18_mask = (mask); \
|
|
||||||
\
|
|
||||||
do \
|
|
||||||
__atg18_old = (*__atg18_memp); \
|
|
||||||
while (__builtin_expect \
|
|
||||||
(catomic_compare_and_exchange_bool_acq (__atg18_memp, \
|
|
||||||
__atg18_old | __atg18_mask,\
|
|
||||||
__atg18_old), 0)); \
|
|
||||||
} while (0)
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/* Atomically *mem |= mask and return the old value of *mem. */
|
|
||||||
#ifndef atomic_or_val
|
|
||||||
# define atomic_or_val(mem, mask) \
|
|
||||||
({ __typeof (*(mem)) __atg19_old; \
|
|
||||||
__typeof (mem) __atg19_memp = (mem); \
|
|
||||||
__typeof (*(mem)) __atg19_mask = (mask); \
|
|
||||||
\
|
|
||||||
do \
|
|
||||||
__atg19_old = (*__atg19_memp); \
|
|
||||||
while (__builtin_expect \
|
|
||||||
(atomic_compare_and_exchange_bool_acq (__atg19_memp, \
|
|
||||||
__atg19_old | __atg19_mask,\
|
|
||||||
__atg19_old), 0)); \
|
|
||||||
\
|
|
||||||
__atg19_old; })
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifndef atomic_full_barrier
|
#ifndef atomic_full_barrier
|
||||||
# define atomic_full_barrier() __asm ("" ::: "memory")
|
# define atomic_full_barrier() __asm ("" ::: "memory")
|
||||||
#endif
|
#endif
|
||||||
|
|||||||
@@ -841,11 +841,11 @@ arena_get2 (size_t size, mstate avoid_arena)
|
|||||||
enough address space to create that many arenas. */
|
enough address space to create that many arenas. */
|
||||||
if (__glibc_unlikely (n <= narenas_limit - 1))
|
if (__glibc_unlikely (n <= narenas_limit - 1))
|
||||||
{
|
{
|
||||||
if (catomic_compare_and_exchange_bool_acq (&narenas, n + 1, n))
|
if (atomic_compare_and_exchange_bool_acq (&narenas, n + 1, n))
|
||||||
goto repeat;
|
goto repeat;
|
||||||
a = _int_new_arena (size);
|
a = _int_new_arena (size);
|
||||||
if (__glibc_unlikely (a == NULL))
|
if (__glibc_unlikely (a == NULL))
|
||||||
catomic_decrement (&narenas);
|
atomic_fetch_add_relaxed (&narenas, -1);
|
||||||
}
|
}
|
||||||
else
|
else
|
||||||
a = reused_arena (avoid_arena);
|
a = reused_arena (avoid_arena);
|
||||||
|
|||||||
@@ -4008,7 +4008,7 @@ _int_malloc (mstate av, size_t bytes)
|
|||||||
if (__glibc_unlikely (pp != NULL && misaligned_chunk (pp))) \
|
if (__glibc_unlikely (pp != NULL && misaligned_chunk (pp))) \
|
||||||
malloc_printerr ("malloc(): unaligned fastbin chunk detected"); \
|
malloc_printerr ("malloc(): unaligned fastbin chunk detected"); \
|
||||||
} \
|
} \
|
||||||
while ((pp = catomic_compare_and_exchange_val_acq (fb, pp, victim)) \
|
while ((pp = atomic_compare_and_exchange_val_acq (fb, pp, victim)) \
|
||||||
!= victim); \
|
!= victim); \
|
||||||
|
|
||||||
if ((unsigned long) (nb) <= (unsigned long) (get_max_fast ()))
|
if ((unsigned long) (nb) <= (unsigned long) (get_max_fast ()))
|
||||||
@@ -4667,7 +4667,7 @@ _int_free_chunk (mstate av, mchunkptr p, INTERNAL_SIZE_T size, int have_lock)
|
|||||||
old2 = old;
|
old2 = old;
|
||||||
p->fd = PROTECT_PTR (&p->fd, old);
|
p->fd = PROTECT_PTR (&p->fd, old);
|
||||||
}
|
}
|
||||||
while ((old = catomic_compare_and_exchange_val_rel (fb, p, old2))
|
while ((old = atomic_compare_and_exchange_val_rel (fb, p, old2))
|
||||||
!= old2);
|
!= old2);
|
||||||
|
|
||||||
/* Check that size of fastbin chunk at the top is the same as
|
/* Check that size of fastbin chunk at the top is the same as
|
||||||
|
|||||||
@@ -354,7 +354,7 @@ this function is in @file{stdlib.h}.
|
|||||||
@c that's protected by list_lock; next_free is only modified while
|
@c that's protected by list_lock; next_free is only modified while
|
||||||
@c list_lock is held too. All other data members of an arena, as well
|
@c list_lock is held too. All other data members of an arena, as well
|
||||||
@c as the metadata of the memory areas assigned to it, are only modified
|
@c as the metadata of the memory areas assigned to it, are only modified
|
||||||
@c while holding the arena's mutex (fastbin pointers use catomic ops
|
@c while holding the arena's mutex (fastbin pointers use atomic ops
|
||||||
@c because they may be modified by free without taking the arena's
|
@c because they may be modified by free without taking the arena's
|
||||||
@c lock). Some reassurance was needed for fastbins, for it wasn't clear
|
@c lock). Some reassurance was needed for fastbins, for it wasn't clear
|
||||||
@c how they were initialized. It turns out they are always
|
@c how they were initialized. It turns out they are always
|
||||||
@@ -383,7 +383,7 @@ this function is in @file{stdlib.h}.
|
|||||||
@c mutex_lock (arena lock) dup @asulock @aculock [returns locked]
|
@c mutex_lock (arena lock) dup @asulock @aculock [returns locked]
|
||||||
@c __get_nprocs ext ok @acsfd
|
@c __get_nprocs ext ok @acsfd
|
||||||
@c NARENAS_FROM_NCORES ok
|
@c NARENAS_FROM_NCORES ok
|
||||||
@c catomic_compare_and_exchange_bool_acq ok
|
@c atomic_compare_and_exchange_bool_acq ok
|
||||||
@c _int_new_arena ok @asulock @aculock @acsmem
|
@c _int_new_arena ok @asulock @aculock @acsmem
|
||||||
@c new_heap ok @acsmem
|
@c new_heap ok @acsmem
|
||||||
@c mmap ok @acsmem
|
@c mmap ok @acsmem
|
||||||
@@ -397,7 +397,7 @@ this function is in @file{stdlib.h}.
|
|||||||
@c mutex_lock (list_lock) dup @asulock @aculock
|
@c mutex_lock (list_lock) dup @asulock @aculock
|
||||||
@c atomic_write_barrier ok
|
@c atomic_write_barrier ok
|
||||||
@c mutex_unlock (list_lock) @aculock
|
@c mutex_unlock (list_lock) @aculock
|
||||||
@c catomic_decrement ok
|
@c atomic_fetch_add ok
|
||||||
@c reused_arena @asulock @aculock
|
@c reused_arena @asulock @aculock
|
||||||
@c reads&writes next_to_use and iterates over arena next without guards
|
@c reads&writes next_to_use and iterates over arena next without guards
|
||||||
@c those are harmless as long as we don't drop arenas from the
|
@c those are harmless as long as we don't drop arenas from the
|
||||||
@@ -414,7 +414,7 @@ this function is in @file{stdlib.h}.
|
|||||||
@c get_max_fast ok
|
@c get_max_fast ok
|
||||||
@c fastbin_index ok
|
@c fastbin_index ok
|
||||||
@c fastbin ok
|
@c fastbin ok
|
||||||
@c catomic_compare_and_exhange_val_acq ok
|
@c atomic_compare_and_exhange_val_acq ok
|
||||||
@c malloc_printerr dup @mtsenv
|
@c malloc_printerr dup @mtsenv
|
||||||
@c if we get to it, we're toast already, undefined behavior must have
|
@c if we get to it, we're toast already, undefined behavior must have
|
||||||
@c been invoked before
|
@c been invoked before
|
||||||
@@ -521,10 +521,9 @@ this function is in @file{stdlib.h}.
|
|||||||
@c chunk2mem dup ok
|
@c chunk2mem dup ok
|
||||||
@c free_perturb ok
|
@c free_perturb ok
|
||||||
@c set_fastchunks ok
|
@c set_fastchunks ok
|
||||||
@c catomic_and ok
|
|
||||||
@c fastbin_index dup ok
|
@c fastbin_index dup ok
|
||||||
@c fastbin dup ok
|
@c fastbin dup ok
|
||||||
@c catomic_compare_and_exchange_val_rel ok
|
@c atomic_compare_and_exchange_val_rel ok
|
||||||
@c chunk_is_mmapped ok
|
@c chunk_is_mmapped ok
|
||||||
@c contiguous dup ok
|
@c contiguous dup ok
|
||||||
@c prev_inuse ok
|
@c prev_inuse ok
|
||||||
@@ -706,7 +705,7 @@ The prototype for this function is in @file{stdlib.h}.
|
|||||||
@safety{@prelim{}@mtsafe{}@asunsafe{@asulock{}}@acunsafe{@aculock{} @acsfd{} @acsmem{}}}
|
@safety{@prelim{}@mtsafe{}@asunsafe{@asulock{}}@acunsafe{@aculock{} @acsfd{} @acsmem{}}}
|
||||||
@c __libc_free @asulock @aculock @acsfd @acsmem
|
@c __libc_free @asulock @aculock @acsfd @acsmem
|
||||||
@c releasing memory into fastbins modifies the arena without taking
|
@c releasing memory into fastbins modifies the arena without taking
|
||||||
@c its mutex, but catomic operations ensure safety. If two (or more)
|
@c its mutex, but atomic operations ensure safety. If two (or more)
|
||||||
@c threads are running malloc and have their own arenas locked when
|
@c threads are running malloc and have their own arenas locked when
|
||||||
@c each gets a signal whose handler free()s large (non-fastbin-able)
|
@c each gets a signal whose handler free()s large (non-fastbin-able)
|
||||||
@c blocks from each other's arena, we deadlock; this is a more general
|
@c blocks from each other's arena, we deadlock; this is a more general
|
||||||
|
|||||||
@@ -97,123 +97,6 @@ do_test (void)
|
|||||||
ret = 1;
|
ret = 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
mem = 64;
|
|
||||||
if (atomic_exchange_acq (&mem, 31) != 64
|
|
||||||
|| mem != 31)
|
|
||||||
{
|
|
||||||
puts ("atomic_exchange_acq test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 2;
|
|
||||||
if (atomic_exchange_and_add (&mem, 11) != 2
|
|
||||||
|| mem != 13)
|
|
||||||
{
|
|
||||||
puts ("atomic_exchange_and_add test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 2;
|
|
||||||
if (atomic_exchange_and_add_acq (&mem, 11) != 2
|
|
||||||
|| mem != 13)
|
|
||||||
{
|
|
||||||
puts ("atomic_exchange_and_add test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 2;
|
|
||||||
if (atomic_exchange_and_add_rel (&mem, 11) != 2
|
|
||||||
|| mem != 13)
|
|
||||||
{
|
|
||||||
puts ("atomic_exchange_and_add test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -21;
|
|
||||||
atomic_add (&mem, 22);
|
|
||||||
if (mem != 1)
|
|
||||||
{
|
|
||||||
puts ("atomic_add test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -1;
|
|
||||||
atomic_increment (&mem);
|
|
||||||
if (mem != 0)
|
|
||||||
{
|
|
||||||
puts ("atomic_increment test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 2;
|
|
||||||
if (atomic_increment_val (&mem) != 3)
|
|
||||||
{
|
|
||||||
puts ("atomic_increment_val test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 0;
|
|
||||||
if (atomic_increment_and_test (&mem)
|
|
||||||
|| mem != 1)
|
|
||||||
{
|
|
||||||
puts ("atomic_increment_and_test test 1 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 35;
|
|
||||||
if (atomic_increment_and_test (&mem)
|
|
||||||
|| mem != 36)
|
|
||||||
{
|
|
||||||
puts ("atomic_increment_and_test test 2 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -1;
|
|
||||||
if (! atomic_increment_and_test (&mem)
|
|
||||||
|| mem != 0)
|
|
||||||
{
|
|
||||||
puts ("atomic_increment_and_test test 3 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 17;
|
|
||||||
atomic_decrement (&mem);
|
|
||||||
if (mem != 16)
|
|
||||||
{
|
|
||||||
puts ("atomic_decrement test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (atomic_decrement_val (&mem) != 15)
|
|
||||||
{
|
|
||||||
puts ("atomic_decrement_val test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 0;
|
|
||||||
if (atomic_decrement_and_test (&mem)
|
|
||||||
|| mem != -1)
|
|
||||||
{
|
|
||||||
puts ("atomic_decrement_and_test test 1 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 15;
|
|
||||||
if (atomic_decrement_and_test (&mem)
|
|
||||||
|| mem != 14)
|
|
||||||
{
|
|
||||||
puts ("atomic_decrement_and_test test 2 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 1;
|
|
||||||
if (! atomic_decrement_and_test (&mem)
|
|
||||||
|| mem != 0)
|
|
||||||
{
|
|
||||||
puts ("atomic_decrement_and_test test 3 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 1;
|
mem = 1;
|
||||||
if (atomic_decrement_if_positive (&mem) != 1
|
if (atomic_decrement_if_positive (&mem) != 1
|
||||||
|| mem != 0)
|
|| mem != 0)
|
||||||
@@ -238,273 +121,6 @@ do_test (void)
|
|||||||
ret = 1;
|
ret = 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
mem = -12;
|
|
||||||
if (! atomic_add_negative (&mem, 10)
|
|
||||||
|| mem != -2)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_negative test 1 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 0;
|
|
||||||
if (atomic_add_negative (&mem, 100)
|
|
||||||
|| mem != 100)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_negative test 2 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 15;
|
|
||||||
if (atomic_add_negative (&mem, -10)
|
|
||||||
|| mem != 5)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_negative test 3 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -12;
|
|
||||||
if (atomic_add_negative (&mem, 14)
|
|
||||||
|| mem != 2)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_negative test 4 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 0;
|
|
||||||
if (! atomic_add_negative (&mem, -1)
|
|
||||||
|| mem != -1)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_negative test 5 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -31;
|
|
||||||
if (atomic_add_negative (&mem, 31)
|
|
||||||
|| mem != 0)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_negative test 6 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -34;
|
|
||||||
if (atomic_add_zero (&mem, 31)
|
|
||||||
|| mem != -3)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_zero test 1 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -36;
|
|
||||||
if (! atomic_add_zero (&mem, 36)
|
|
||||||
|| mem != 0)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_zero test 2 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 113;
|
|
||||||
if (atomic_add_zero (&mem, -13)
|
|
||||||
|| mem != 100)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_zero test 3 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -18;
|
|
||||||
if (atomic_add_zero (&mem, 20)
|
|
||||||
|| mem != 2)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_zero test 4 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 10;
|
|
||||||
if (atomic_add_zero (&mem, -20)
|
|
||||||
|| mem != -10)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_zero test 5 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 10;
|
|
||||||
if (! atomic_add_zero (&mem, -10)
|
|
||||||
|| mem != 0)
|
|
||||||
{
|
|
||||||
puts ("atomic_add_zero test 6 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 0;
|
|
||||||
atomic_bit_set (&mem, 1);
|
|
||||||
if (mem != 2)
|
|
||||||
{
|
|
||||||
puts ("atomic_bit_set test 1 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 8;
|
|
||||||
atomic_bit_set (&mem, 3);
|
|
||||||
if (mem != 8)
|
|
||||||
{
|
|
||||||
puts ("atomic_bit_set test 2 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifdef TEST_ATOMIC64
|
|
||||||
mem = 16;
|
|
||||||
atomic_bit_set (&mem, 35);
|
|
||||||
if (mem != 0x800000010LL)
|
|
||||||
{
|
|
||||||
puts ("atomic_bit_set test 3 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
mem = 0;
|
|
||||||
if (atomic_bit_test_set (&mem, 1)
|
|
||||||
|| mem != 2)
|
|
||||||
{
|
|
||||||
puts ("atomic_bit_test_set test 1 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 8;
|
|
||||||
if (! atomic_bit_test_set (&mem, 3)
|
|
||||||
|| mem != 8)
|
|
||||||
{
|
|
||||||
puts ("atomic_bit_test_set test 2 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifdef TEST_ATOMIC64
|
|
||||||
mem = 16;
|
|
||||||
if (atomic_bit_test_set (&mem, 35)
|
|
||||||
|| mem != 0x800000010LL)
|
|
||||||
{
|
|
||||||
puts ("atomic_bit_test_set test 3 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 0x100000000LL;
|
|
||||||
if (! atomic_bit_test_set (&mem, 32)
|
|
||||||
|| mem != 0x100000000LL)
|
|
||||||
{
|
|
||||||
puts ("atomic_bit_test_set test 4 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifdef catomic_compare_and_exchange_val_acq
|
|
||||||
mem = 24;
|
|
||||||
if (catomic_compare_and_exchange_val_acq (&mem, 35, 24) != 24
|
|
||||||
|| mem != 35)
|
|
||||||
{
|
|
||||||
puts ("catomic_compare_and_exchange_val_acq test 1 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 12;
|
|
||||||
if (catomic_compare_and_exchange_val_acq (&mem, 10, 15) != 12
|
|
||||||
|| mem != 12)
|
|
||||||
{
|
|
||||||
puts ("catomic_compare_and_exchange_val_acq test 2 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -15;
|
|
||||||
if (catomic_compare_and_exchange_val_acq (&mem, -56, -15) != -15
|
|
||||||
|| mem != -56)
|
|
||||||
{
|
|
||||||
puts ("catomic_compare_and_exchange_val_acq test 3 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -1;
|
|
||||||
if (catomic_compare_and_exchange_val_acq (&mem, 17, 0) != -1
|
|
||||||
|| mem != -1)
|
|
||||||
{
|
|
||||||
puts ("catomic_compare_and_exchange_val_acq test 4 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
mem = 24;
|
|
||||||
if (catomic_compare_and_exchange_bool_acq (&mem, 35, 24)
|
|
||||||
|| mem != 35)
|
|
||||||
{
|
|
||||||
puts ("catomic_compare_and_exchange_bool_acq test 1 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 12;
|
|
||||||
if (! catomic_compare_and_exchange_bool_acq (&mem, 10, 15)
|
|
||||||
|| mem != 12)
|
|
||||||
{
|
|
||||||
puts ("catomic_compare_and_exchange_bool_acq test 2 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -15;
|
|
||||||
if (catomic_compare_and_exchange_bool_acq (&mem, -56, -15)
|
|
||||||
|| mem != -56)
|
|
||||||
{
|
|
||||||
puts ("catomic_compare_and_exchange_bool_acq test 3 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -1;
|
|
||||||
if (! catomic_compare_and_exchange_bool_acq (&mem, 17, 0)
|
|
||||||
|| mem != -1)
|
|
||||||
{
|
|
||||||
puts ("catomic_compare_and_exchange_bool_acq test 4 failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 2;
|
|
||||||
if (catomic_exchange_and_add (&mem, 11) != 2
|
|
||||||
|| mem != 13)
|
|
||||||
{
|
|
||||||
puts ("catomic_exchange_and_add test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -21;
|
|
||||||
catomic_add (&mem, 22);
|
|
||||||
if (mem != 1)
|
|
||||||
{
|
|
||||||
puts ("catomic_add test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = -1;
|
|
||||||
catomic_increment (&mem);
|
|
||||||
if (mem != 0)
|
|
||||||
{
|
|
||||||
puts ("catomic_increment test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 2;
|
|
||||||
if (catomic_increment_val (&mem) != 3)
|
|
||||||
{
|
|
||||||
puts ("catomic_increment_val test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
mem = 17;
|
|
||||||
catomic_decrement (&mem);
|
|
||||||
if (mem != 16)
|
|
||||||
{
|
|
||||||
puts ("catomic_decrement test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (catomic_decrement_val (&mem) != 15)
|
|
||||||
{
|
|
||||||
puts ("catomic_decrement_val test failed");
|
|
||||||
ret = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Tests for C11-like atomics. */
|
/* Tests for C11-like atomics. */
|
||||||
mem = 11;
|
mem = 11;
|
||||||
if (atomic_load_relaxed (&mem) != 11 || atomic_load_acquire (&mem) != 11)
|
if (atomic_load_relaxed (&mem) != 11 || atomic_load_acquire (&mem) != 11)
|
||||||
|
|||||||
@@ -43,7 +43,7 @@
|
|||||||
|
|
||||||
#ifndef COMPARE_AND_SWAP
|
#ifndef COMPARE_AND_SWAP
|
||||||
# define COMPARE_AND_SWAP(ptr, old, new) \
|
# define COMPARE_AND_SWAP(ptr, old, new) \
|
||||||
(catomic_compare_and_exchange_bool_acq (ptr, new, old) == 0)
|
(atomic_compare_and_exchange_bool_acq (ptr, new, old) == 0)
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
ElfW(Addr) _dl_boot_fptr_table [ELF_MACHINE_BOOT_FPTR_TABLE_LEN];
|
ElfW(Addr) _dl_boot_fptr_table [ELF_MACHINE_BOOT_FPTR_TABLE_LEN];
|
||||||
|
|||||||
Reference in New Issue
Block a user