Trait compio_driver::OpCode

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pub trait OpCode {
    // Required method
    unsafe fn operate(
        self: Pin<&mut Self>,
        optr: *mut OVERLAPPED
    ) -> Poll<Result<usize>>;

    // Provided methods
    fn op_type(&self) -> OpType { ... }
    unsafe fn cancel(self: Pin<&mut Self>, optr: *mut OVERLAPPED) -> Result<()> { ... }
}
Expand description

Abstraction of IOCP operations.

Required Methods§

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unsafe fn operate( self: Pin<&mut Self>, optr: *mut OVERLAPPED ) -> Poll<Result<usize>>

Perform Windows API call with given pointer to overlapped struct.

It is always safe to cast optr to a pointer to Overlapped<Self>.

§Safety
  • self must be alive until the operation completes.
  • Should not use Overlapped::op.

Provided Methods§

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fn op_type(&self) -> OpType

Determines that the operation is really overlapped defined by Windows API. If not, the driver will try to operate it in another thread.

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unsafe fn cancel(self: Pin<&mut Self>, optr: *mut OVERLAPPED) -> Result<()>

Cancel the async IO operation.

Usually it calls CancelIoEx.

§Safety

Implementors§