[RFC] Execution hints #59
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Do you have some examples of other potential hints that we may have? |
mrshiposha
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May 28, 2024
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Closing in favor of polkadot-fellows/RFCs#107 |
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Aug 26, 2024
Moved from polkadot-fellows/xcm-format#59. This RFC proposes a framework for specifying "execution hints", much like [window hints in GLFW](https://www.glfw.org/docs/3.3/window_guide.html#window_hints). The first one is `AssetClaimer`, that allows the user to specify who can claim trapped assets resulting from that program execution. That was an instruction already approved and targeted at XCMv5. This RFC proposes to move it to this hints mechanism. Another potential hint is `LeftoverAssetsDestination`, which, when set, would send all leftover assets to a particular location instead of trapping. This additional hint is not covered by the RFC. It could be proposed in a new one.
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RFC#37 introduces a
SetAssetClaimerinstruction.This idea of instructing the XCVM to change some implementation-specific behavior is useful.
In order to generalize this mechanism, this RFC introduces a new instruction
SetExecutionHintsand makes the
SetAssetClaimerbe just one of many possible execution hints.