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44 lines
824 B
Fortran
44 lines
824 B
Fortran
! @@name: task_depend.6.f90
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! @@type: F-free
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! @@compilable: yes
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! @@linkable: yes
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! @@expect: success
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subroutine foo()
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implicit none
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integer :: x, y
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x = 0
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y = 2
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!$omp task depend(inout: x) shared(x)
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x = x + 1 !! 1st child task
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!$omp end task
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!$omp task shared(y)
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y = y - 1 !! 2nd child task
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!$omp end task
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!$omp taskwait depend(in: x) !! 1st taskwait
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print*, "x=", x
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!! Second task may not be finished.
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!! Accessing y here will create a race condition.
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!$omp taskwait !! 2nd taskwait
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print*, "y=", y
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end subroutine foo
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program p
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implicit none
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!$omp parallel
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!$omp single
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call foo()
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!$omp end single
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!$omp end parallel
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end program p
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