Add ContractCodeCostInputs and new cost types #177
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(Continuing on from #172 which got its history messed up in github's brain due to my initial branch mis-targeting) |
sisuresh
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Mar 22, 2024
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This is a sketch of the first step in the plan for addressing #1292 and eventually #827 and #1313, namely: - add a bunch of cost types that decompose the current "worst case" VM instantiation cost type - continue to charge the worst case on initial contract upload - _store_ the decomposed cost-type inputs in the ledger, since we can observe them after the initial upload parse - _use_ those decomposed cost-type inputs when doing runtime instantiation - add a module cache - populate the module cache with all modules on host startup - use cached modules during instantiation This PR has accompanying changes in XDR and wasmi: - stellar/stellar-xdr#177 - stellar/rs-stellar-xdr#346 Remaining to do: - [x] determine what the correct set of decomposed cost types even is - [ ] ~add more code to wasmi to enable observing more inputs~ - [x] add cost-type runners / calibrations for all the decomposed cost-types - [x] protocol-gate this new behaviour - [x] make the linker-loop do less work to match the tighter cost model (i.e. complete #1292) - [x] possibly _duplicate_ the set of cost types added here, so we have a cached and uncached version of each, and implement a solution to #827 - [ ] possibly decompose the set sufficiently to model what will happen when we take wasmi 0.32 and enable lazy translation (i.e. complete #1313)
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This is a sketch of changes in support of stellar/rs-soroban-env#1359 -- see that PR for explanation and links to underlying bugs.