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Hanzo AI
8385394b51
Thin re-export layer so consumers importing the legacy node path
github.com/luxfi/node/vms/thresholdvm see the GPU substrate without
source changes. ONE dlopen handle across the whole process — both
the chains/ and node/ paths share the same plugin instance per
sync.Once in chains/thresholdvm/backend.go.
Files (under vms/thresholdvm/):
- thresholdvm_gpu.go (cgo) : aliases GPUBackend + 8 wire structs
from chains/thresholdvm; constants
re-exported; SelectGPUBackend helper
for luxd startup diagnostics
- thresholdvm_gpu_nocgo.go (!cgo) : aliases the same types; Backend()
returns nil; every method short-
circuits to ErrGPUNotAvailable
- backend.go (cgo) : SelectGPUBackend() — one-line
diagnostic string in the cevm.go
pattern (chains/evm/backend_cgo.go)
- thresholdvm_gpu_test.go : 3 tests covering layout sizes, the
dlopen round-trip with a zero
fixture, and the nil-receiver +
zero-GPUBackend stub contract
Per the project memory note ('Lux GPU plugin home 2026-05-28' +
'project_lux_gpu_plugins.md'), luxd's thresholdvm (M-Chain) is NOT
yet registered in the running luxd VM manager — this commit provides
the bridge surface only; flipping the manager hook-up is a separate
ops PR.
Constraints honored:
- Existing thresholdvm.go re-export (chains/thresholdvm alias wrapper)
NOT modified — bridge is opt-in alongside it
- Both build flavors compile: go build + CGO_ENABLED=0 go build
- Tests pass: 3/3 under cgo, 3/3 under nocgo, race-clean
50 lines
1.8 KiB
Go
50 lines
1.8 KiB
Go
// Copyright (C) 2026, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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//go:build !cgo
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// nocgo re-export of the chains/thresholdvm GPU bridge. Under !cgo the
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// upstream GPUBackend methods all return ErrGPUNotAvailable and
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// Backend() returns nil; this layer transparently passes that through
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// so callers see identical behaviour regardless of build mode.
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//
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// One and only one nocgo stub for the entire process: it lives in
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// chains/thresholdvm. This package just re-exports the types and the
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// sentinel error.
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package thresholdvm
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import "github.com/luxfi/chains/thresholdvm"
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type (
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GPUBackend = thresholdvm.GPUBackend
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GPUBackendKind = thresholdvm.GPUBackendKind
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GPUCeremony = thresholdvm.GPUCeremony
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GPUKeyShare = thresholdvm.GPUKeyShare
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GPUContribution = thresholdvm.GPUContribution
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GPUMPCVMState = thresholdvm.GPUMPCVMState
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GPUMPCVMRoundDescriptor = thresholdvm.GPUMPCVMRoundDescriptor
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GPUCeremonyOp = thresholdvm.GPUCeremonyOp
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GPUContributionOp = thresholdvm.GPUContributionOp
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GPUMPCVMTransitionResult = thresholdvm.GPUMPCVMTransitionResult
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)
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const (
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GPUBackendNone = thresholdvm.GPUBackendNone
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GPUBackendCUDA = thresholdvm.GPUBackendCUDA
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GPUBackendHIP = thresholdvm.GPUBackendHIP
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GPUBackendMetal = thresholdvm.GPUBackendMetal
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GPUBackendVulkan = thresholdvm.GPUBackendVulkan
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GPUBackendWebGPU = thresholdvm.GPUBackendWebGPU
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)
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var ErrGPUNotAvailable = thresholdvm.ErrGPUNotAvailable
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// GPUBackendInstance returns nil under !cgo — the upstream Backend()
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// returns nil because no dlopen ever happens. Callers branch on the
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// IsAvailable() check (or `g == nil`) and route to the CPU reference.
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func GPUBackendInstance() *GPUBackend {
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return thresholdvm.Backend()
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}
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