15 lines
251 B
C
15 lines
251 B
C
#include <stdint.h>
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volatile uint64_t x;
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int main(int argc, char *argv[])
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{
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uint64_t old, new = argc;
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argv = argv;
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do {
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old = __sync_val_compare_and_swap(&x, 0, 0);
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} while (!__sync_bool_compare_and_swap(&x, old, new));
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return old == new;
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}
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