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[cdsspec-compiler.git] / benchmark / chase-lev-deque-bugfix / deque.c

diff --git a/benchmark/chase-lev-deque-bugfix/deque.c b/benchmark/chase-lev-deque-bugfix/deque.c
index 1ebeb135c3cee5c456133794b2f83bcf1030419d..9fbc426101362b6787a9c45bf42f359246224f4b 100644 (file)
--- a/benchmark/chase-lev-deque-bugfix/deque.c
+++ b/benchmark/chase-lev-deque-bugfix/deque.c
@@ -24,6 +24,7 @@ int take(Deque *q) {
        size_t b = atomic_load_explicit(&q->bottom, memory_order_relaxed) - 1;
        Array *a = (Array *) atomic_load_explicit(&q->array, memory_order_relaxed);
        atomic_store_explicit(&q->bottom, b, memory_order_relaxed);
+       /**** detected correctness ****/
        atomic_thread_fence(memory_order_seq_cst);
        size_t t = atomic_load_explicit(&q->top, memory_order_relaxed);
        /**
@@ -79,7 +80,7 @@ void resize(Deque *q) {
        for(i=top; i < bottom; i++) {
                atomic_store_explicit(&new_a->buffer[i % new_size], atomic_load_explicit(&a->buffer[i % size], memory_order_relaxed), memory_order_relaxed);
        }
-       /**** FIXME: detected failure ****/
+       /**** detected UL ****/
        atomic_store_explicit(&q->array, new_a, memory_order_release);
        printf("resize\n");
 }
@@ -91,7 +92,7 @@ void resize(Deque *q) {
 */
 void push(Deque *q, int x) {
        size_t b = atomic_load_explicit(&q->bottom, memory_order_relaxed);
-       /**** FIXME: detected correctness ****/
+       /**** detected correctness ****/
        size_t t = atomic_load_explicit(&q->top, memory_order_acquire);
        Array *a = (Array *) atomic_load_explicit(&q->array, memory_order_relaxed);
        if (b - t > atomic_load_explicit(&a->size, memory_order_relaxed) - 1) /* Full queue. */ {
@@ -107,6 +108,7 @@ void push(Deque *q, int x) {
                @Label: Push_Point
                @End
        */
+       /**** correctness error ****/
        atomic_thread_fence(memory_order_release);
        
        atomic_store_explicit(&q->bottom, b + 1, memory_order_relaxed);
@@ -121,7 +123,9 @@ void push(Deque *q, int x) {
 int steal(Deque *q) {
        //FIXME: weaken the following acquire causes no spec problem
        size_t t = atomic_load_explicit(&q->top, memory_order_acquire);
+       //FIXME: remove the fence causes no error and fewer executions..
        atomic_thread_fence(memory_order_seq_cst);
+       /**** detected UL ****/
        size_t b = atomic_load_explicit(&q->bottom, memory_order_acquire);
        /**
                @Begin
@@ -132,6 +136,7 @@ int steal(Deque *q) {
        int x = EMPTY;
        if (t < b) {
                /* Non-empty queue. */
+               /**** detected UL ****/
                Array *a = (Array *) atomic_load_explicit(&q->array, memory_order_acquire);
                int size = atomic_load_explicit(&a->size, memory_order_relaxed);
                x = atomic_load_explicit(&a->buffer[t % size], memory_order_relaxed);
@@ -141,7 +146,7 @@ int steal(Deque *q) {
                        @Label: Potential_Steal
                        @End
                */
-               
+               /**** detected correctness failure ****/ 
                bool succ = atomic_compare_exchange_strong_explicit(&q->top, &t, t + 1,
                        memory_order_seq_cst, memory_order_relaxed);
                /**