mirror of
https://github.com/autc04/Retro68.git
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68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
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#include <stdlib.h>
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#include <unistd.h>
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int
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main ()
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{
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int x = 0, y = 0, z = 0, err;
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int shared_mem = 0;
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#pragma omp target map(to: shared_mem)
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shared_mem = 1;
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#pragma omp parallel
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#pragma omp single
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{
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#pragma omp task depend(in: x)
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{
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usleep (5000);
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x = 1;
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}
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#pragma omp task depend(in: x)
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{
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usleep (6000);
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y = 2;
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}
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#pragma omp task depend(out: z)
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{
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usleep (7000);
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z = 3;
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}
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#pragma omp target enter data map(to: x, y, z) depend(inout: x, z) nowait
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#pragma omp task depend(inout: x, z)
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{
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x++; y++; z++;
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}
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#pragma omp target update to(x, y) depend(inout: x) nowait
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#pragma omp target enter data map(always, to: z) depend(inout: z) nowait
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#pragma omp target map (alloc: x, y, z) map (from: err) depend(inout: x, z)
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{
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err = x != 2 || y != 3 || z != 4;
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x = 5; y = 6; z = 7;
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}
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#pragma omp task depend(in: x)
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{
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usleep (5000);
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if (!shared_mem)
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x = 1;
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}
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#pragma omp task depend(in: x)
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{
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usleep (6000);
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if (!shared_mem)
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y = 2;
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}
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#pragma omp task depend(out: z)
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{
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usleep (3000);
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if (!shared_mem)
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z = 3;
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}
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#pragma omp target exit data map(release: z) depend(inout: z) nowait
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#pragma omp target exit data map(from: x, y) depend(inout: x) nowait
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#pragma omp target exit data map(from: z) depend(inout: z) nowait
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#pragma omp taskwait
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if (err || x != 5 || y != 6 || z != 7)
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abort ();
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}
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return 0;
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}
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