SPSCQ capacity assert.

[AsherValentini]

Hi :)

I was just looking over this repo's SPSCQ's ctr, and would like to ask a question regarding the Capacity assertions.

Two assertion are made:

1. Capacity > 0
2. Capacity == 2^k

This setup allows the SPSCQ to be constructed with a Capacity of 1?

1. 1 > 0 (tick)
2. 0001 & 0000 = 0000 (tick)

A buffer with this capacity will always look full and always look empty, no?

I doubt that the buffer will ever be ctr'd with a capacity of 1, but since we are placing strict'ish construction rails, would it not be best to ensure a Capacity > 1 and a Capacity = 2^k.

Am I off the mark here, or is this an industry norm I am just not used to...

All the best,

Ash

[eeiaao]

hi, nice catch! I absolutely missed this corner case
do not hesitate to make a pr to fix this scenario, cheers

[AsherValentini]

on it :)