mirror of
https://github.com/OpenMP/Examples.git
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40 lines
733 B
C
40 lines
733 B
C
/*
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* @@name: task_dep.6
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* @@type: C
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* @@operation: run
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* @@expect: success
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* @@version: omp_5.0
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*/
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#include<stdio.h>
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void foo()
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{
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int x = 0, y = 2;
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#pragma omp task depend(inout: x) shared(x)
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x++; // 1st child task
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#pragma omp task shared(y)
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y--; // 2nd child task
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#pragma omp taskwait depend(in: x) // 1st taskwait
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printf("x=%d\n",x);
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// Second task may not be finished.
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// Accessing y here will create a race condition.
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#pragma omp taskwait // 2nd taskwait
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printf("y=%d\n",y);
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}
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int main()
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{
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#pragma omp parallel
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#pragma omp single
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foo();
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return 0;
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}
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