Module mpi::request
[−]
[src]
Request objects for non-blocking operations
Non-blocking operations such as immediate_send() return request objects that borrow any
buffers involved in the operation so as to ensure proper access restrictions. In order to
release the borrowed buffers from the request objects, a completion operation such as wait()
or test() must be used on the request object. To enforce this rule, the request objects
implement a Drop bomb which will panic!() when a request object is dropped.
To handle request completion in a RAII style, requests can be wrapped in either WaitGuard or
CancelGuard which will follow the respective policy for completing the operation upon being
dropped instead of panic!()ing.
Unfinished features
- 3.7: Nonblocking mode:
- Completion,
MPI_Waitany(),MPI_Waitall(),MPI_Waitsome(),MPI_Testany(),MPI_Testall(),MPI_Testsome(),MPI_Request_get_status()
- Completion,
- 3.8:
- Cancellation,
MPI_Cancel(),MPI_Test_cancelled()
- Cancellation,
Modules
| traits |
Request object traits |
Structs
| CancelGuard |
Guard object that cancels an operation when it is dropped |
| PlainRequest |
A request object for an non-blocking operation that holds no references |
| ReadRequest |
A request object for a non-blocking operation that holds a reference to an immutable buffer |
| ReadWriteRequest |
A request object for a non-blocking operation that holds a reference to a mutable and an immutable buffer |
| WaitGuard |
Guard object that waits for the completion of an operation when it is dropped |
| WriteRequest |
A request object for a non-blocking operation that holds a reference to a mutable buffer |
Traits
| Request |
A request for a non-blocking operation |