Speedup CL spot price check and swap by removing an iterator #7258
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ValarDragon
requested review from
czarcas7ic,
p0mvn and
AlpinYukseloglu
as code owners
p0mvn
approved these changes
Jan 7, 2024
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LGTM!
Confirmed that this is valid per:
- pool creation with no positions:
osmosis/x/concentrated-liquidity/model/pool.go
Lines 46 to 47 in 74ea7f1
- removal of last position:
osmosis/x/concentrated-liquidity/lp.go
Lines 615 to 616 in 74ea7f1
| // the current sqrt price being 0. | ||
| // We also check that the current tick is 0, which is also guaranteed in this situation. | ||
| // That derisks any edge-case where the sqrt price is 0 but the tick is not 0. | ||
| func (k Keeper) PoolHasPosition(ctx sdk.Context, pool types.ConcentratedPoolExtension) bool { |
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Would it be appropriate to define this method on the pool itself?
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Actually on further thought I'm not sure, this is a convention set by the keeper not the pool itself. (Adding a position doesn't go through a pool.AddPosition method)
Co-authored-by: Roman <[email protected]>
PaddyMc
approved these changes
Jan 7, 2024
czarcas7ic
approved these changes
Jan 7, 2024
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Speedup the CL check for if a pool is initialized.
Right now we do a very expensive iterator call. This technically saves gas for user swaps, but this is really small (at not all commensurate with the CPU costs it induces)
More pressingly, this is a notable delay to block processing time, due to occurrence in:
Notice that SpotPrice is 0 iff there is no position in the pool. You can convince yourself of this by looking at: