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27 lines
388 B
27 lines
388 B
C R+poonceonces |
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(* |
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* Result: Sometimes |
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* |
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* This is the unordered (thus lacking smp_mb()) version of one of the |
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* classic counterintuitive litmus tests that illustrates the effects of |
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* store propagation delays. |
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*) |
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{} |
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P0(int *x, int *y) |
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{ |
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WRITE_ONCE(*x, 1); |
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WRITE_ONCE(*y, 1); |
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} |
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P1(int *x, int *y) |
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{ |
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int r0; |
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WRITE_ONCE(*y, 2); |
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r0 = READ_ONCE(*x); |
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} |
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exists (y=2 /\ 1:r0=0)
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