Receive status

[VictorEijkhout]

I notice that your recv calls returns a status object that gets created with a reinterpret_cast of the MPI_Status. Fine. But I usually specify MPI_STATUS_IGNORE. In MPL that would be dropping the status object and never assigning it? But does that lead to a memory leak?

(This is the first time I'm looking at MPL and its source so I maybe overlooking something.)

[rabauke]

No there is no memory leak. The recv function creates a local status object which is automatically clean-up by the compiler when leaving the function. Note that reinterpret_cast does not create a new object.

reinterpret_cast<MPI_Status *>(&s)

Means, take the address of s (which is of type mpl::status) and interpret this address as a pointer to MPI_Status.