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1 /* { dg-do compile } */
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2
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3 #include <omp.h>
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4 typedef struct
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5 {
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6 int a, b;
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7 omp_nest_lock_t lck;
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8 } pair;
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9 int work1 ();
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10 int work2 ();
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11 int work3 ();
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12 void
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13 incr_a (pair * p, int a)
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14 {
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15 /* Called only from incr_pair, no need to lock. */
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16 p->a += a;
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17 }
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18
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19 void
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20 incr_b (pair * p, int b)
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21 {
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22 /* Called both from incr_pair and elsewhere, */
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23 /* so need a nestable lock. */
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24 omp_set_nest_lock (&p->lck);
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25 p->b += b;
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26 omp_unset_nest_lock (&p->lck);
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27 }
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28
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29 void
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30 incr_pair (pair * p, int a, int b)
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31 {
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32 omp_set_nest_lock (&p->lck);
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33 incr_a (p, a);
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34 incr_b (p, b);
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35 omp_unset_nest_lock (&p->lck);
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36 }
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37
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38 void
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39 a40 (pair * p)
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40 {
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41 #pragma omp parallel sections
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42 {
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43 #pragma omp section
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44 incr_pair (p, work1 (), work2 ());
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45 #pragma omp section
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46 incr_b (p, work3 ());
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47 }
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48 }
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