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- remove the non-atomic write and repeated argument evaluation from __atomic_store_n - remove the recursive atomic_signal_fence macro - add tests for stores and signal fences tested with make test on linux x86_64
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
#include <stdatomic.h>
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#include <stdio.h>
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static int value_calls;
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static int order_calls;
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static int next_value(void)
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{
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++value_calls;
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return 42;
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}
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static int next_order(void)
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{
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++order_calls;
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return __ATOMIC_SEQ_CST;
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}
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int main(void)
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{
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int values[2] = {7, 8};
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int index = 0;
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int value = 1;
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volatile int vol = 0;
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int *pointer = &value;
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void (*signal_fence)(memory_order) = &atomic_signal_fence;
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__atomic_store_n(&values[index++], next_value(), next_order());
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printf("%d %d %d %d %d\n", index, value_calls, order_calls,
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values[0], values[1]);
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__atomic_store_n(&value, value + 1, __ATOMIC_RELAXED);
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printf("%d\n", value);
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__atomic_store_n(&vol, 13, __ATOMIC_RELEASE);
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printf("%d\n", __atomic_load_n(&vol, __ATOMIC_ACQUIRE));
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__atomic_store_n(&pointer, &values[0], __ATOMIC_RELEASE);
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printf("%d\n", *__atomic_load_n(&pointer, __ATOMIC_ACQUIRE));
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atomic_signal_fence(memory_order_acquire);
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__atomic_signal_fence(__ATOMIC_RELEASE);
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signal_fence(memory_order_seq_cst);
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atomic_thread_fence(memory_order_seq_cst);
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__atomic_thread_fence(__ATOMIC_SEQ_CST);
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puts("ok");
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return 0;
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}
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