Re: remove some STATUS_* symbols

On Thu, Jun 11, 2020 at 03:55:59PM +0200, Peter Eisentraut wrote:
> On 2020-01-16 13:56, Robert Haas wrote:
>> IMHO, custom enums for each particular case would be a big improvement
>> over supposedly-generic STATUS codes. It makes it clearer which values
>> are possible in each code path, and it comes out nicer in the
>> debugger, too.
>
> Given this feedback, I would like to re-propose the original patch, attached
> again here.
>
> After this, the use of the remaining STATUS_* symbols will be contained to
> the frontend and backend libpq code, so it'll be more coherent.

I am still in a so-so state regarding this patch, but I find the
debugger argument a good one.  And please don't consider me as a
blocker.

> Add a separate enum for use in the locking APIs, which were the only
> user.

> +typedef enum
> +{
> +    PROC_WAIT_STATUS_OK,
> +    PROC_WAIT_STATUS_WAITING,
> +    PROC_WAIT_STATUS_ERROR,
> +} ProcWaitStatus;

ProcWaitStatus, and more particularly PROC_WAIT_STATUS_WAITING are
strange names (the latter refers to "wait" twice).  What do you think
about renaming the enum to ProcStatus and the flags to PROC_STATUS_*?
--
Michael