26 lines
		
	
	
		
			324 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			26 lines
		
	
	
		
			324 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| C CoRW+poonceonce+Once
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| 
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| (*
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|  * Result: Never
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|  *
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|  * Test of read-write coherence, that is, whether or not a read from
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|  * a given variable and a later write to that same variable are ordered.
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|  *)
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| 
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| {}
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| 
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| P0(int *x)
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| {
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| 	int r0;
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| 
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| 	r0 = READ_ONCE(*x);
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| 	WRITE_ONCE(*x, 1);
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| }
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| 
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| P1(int *x)
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| {
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| 	WRITE_ONCE(*x, 2);
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| }
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| 
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| exists (x=2 /\ 0:r0=2)
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