18 lines
468 B
Cython
18 lines
468 B
Cython
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cdef extern from "mpi.h":
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ctypedef void *MPI_Comm
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cdef extern from "Python.h":
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object PyLong_FromVoidPtr(void*)
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cdef extern:
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ctypedef class mpi4py.MPI.Comm [object PyMPICommObject]:
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cdef MPI_Comm ob_mpi
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cdef unsigned flags
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# For compatibility with mpi4py <= 1.3.1
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# Newer versions could use the MPI._addressof function
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def _addressof(Comm comm):
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cdef void *ptr = NULL
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ptr = <void*>&comm.ob_mpi
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return PyLong_FromVoidPtr(ptr)
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