Page Comparison

...

Pointer to a set of socket file descriptors to:

• • Check for available read operations.
  • Returns the actual socket file descriptors ready for available read operations, if no errors;
  • Returns the initial, non-modified set of socket file descriptors, on any errors;
  • Returns a null-valued (i.e., zero-cleared) descriptor set, if any timeout expires.

psock_desc_wr

Pointer to a set of socket file descriptors to:

• • Check for available read operations.
  • Returns the actual socket file descriptors ready for available write operations, if no errors;
  • Returns the initial, non-modified set of socket file descriptors, on any errors;
  • Returns a null-valued (i.e., zero-cleared) descriptor set, if any timeout expires.

psock_desc_err

Pointer to a set of socket file descriptors to:

• • Check for any available socket errors.
  • Returns the actual socket file descriptors ready with any pending errors;
  • Returns the initial, non-modified set of socket file descriptors, on any errors;
  • Returns a null-valued (i.e., zero-cleared) descriptor set, if any timeout expires.

ptimeout

Pointer to a timeout argument.

...