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* Include LICENCE in the Jekyll build * Replace old licence link with new and improved licence link * Add note to EIP-1 mandating the new link * Maybe this fixes it? * Rename LICENCE so that jekyll picks it up * Add original LICENCE file back * Delete the markdown file * Add Jekyll header Hopefully the tooling still detects it as CC0 * Remove Jekyll header * Maybe this will trick Jekyll and satisfy github? * Remove config changes * Enable incremental build * Will it work if I rename it? * I'll just paste the content of the licence into the file... * Perhaps this will work * Replace the licence file * Fix false positive Co-authored-by: Micah Zoltu <micah@zoltu.net> * Resolve feedback * Perhaps this might work * It didn't work This reverts commit 55116e15168fb20ae57dea97388bb260c0941465. * Will licencee still detect this correctly? * Jekyll Preamble in licence file * Include it? * Licence -> License, get rid of CC0.md * Force wording of copyright waiver * Formatting consistent with the rest of the list * Spelling * Escape * Task failed successfully * Fix two more links * Will this render it? * Perhaps this will work too * .md essential * Fix the issues Micah noted Co-authored-by: Micah Zoltu <micah@zoltu.net>
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| eip | title | author | discussions-to | status | type | category | created |
|---|---|---|---|---|---|---|---|
| 3322 | Account gas storage opcodes | William Morriss (@wjmelements) | https://ethereum-magicians.org/t/eip-3322-efficient-gas-storage/5470 | Stagnant | Standards Track | Core | 2020-03-04 |
Simple Summary
Allows contract accounts to store gas that can be transferred to the refund counter.
Abstract
Contracts can persist gas for later transfer to the refund counter. Three opcodes are introduced to read, add to, and use this gas counter.
Motivation
The refund mechanism is currently being used by gas tokens to arbitrage gas price. This brings gas supply elasticity and price stability by moving gas from blocks with less demand to blocks with more demand. Unfortunately this rewards unnecessary state growth. By introducing a superior gas storage mechanism, the gas market will require less storage and computation.
Specification
Contract accounts gain an unsigned gas refund counter, initially zero.
Three new opcodes are introduced to manage this state.
SELFGAS(0x49): Pushes the current account's gas refund counter onto the stack. Shares gas pricing withSELFBALANCE.USEGAS(0x4a): Popsamountfrom the stack. The minimum ofamountand the current account's gas refund counter is transferred to the execution context's refund counter. Costs5000gas.STOREGAS(0x4b): Popsamountfrom the stack. Costs5000 + amountgas. Increases the current account's gas refund counter byamount.
Rationale
By reusing the execution context's refund counter we can reuse its 50% DoS protection, which limits its block elasticity contribution to 2x.
The gas costs are based on similar opcodes SELFBALANCE and SSTORE.
Most accounts will store no gas, so the per-account storage overhead should be minimal or even zero in the normal case.
The opcode numbers chosen are in the same 0x4X range as SELFBALANCE and GASLIMIT.
Backwards Compatibility
Because the gas is added to the refund counter, no compatibility issues are anticipated.
Test Cases
| Code | Used Gas | Refund | Original | Final |
|---|---|---|---|---|
| 0x60004900 | 5003 | 0 | 0 | 0 |
| 0x60034900 | 5003 | 2 | 2 | 0 |
| 0x60034900 | 5003 | 3 | 3 | 0 |
| 0x60034900 | 5003 | 3 | 4 | 1 |
| 0x60034960034900 | 10006 | 4 | 4 | 0 |
| 0x60034960034900 | 10006 | 6 | 6 | 0 |
| 0x484900 | 5010 | 100000 | 100000 | 0 |
| 0x61ffff4a00 | 70538 | 0 | 0 | 65535 |
Security Considerations
DoS is already limited by the 50% refund limit.
Copyright
Copyright and related rights waived via CC0.