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memoryMap

Source (upstream pre-purge) Current
File consensus/ethash/ethash.go ethash.go
Symbol memoryMap memoryMap
Ref dde2da0ef~1 etc/v1.17.3-full-node

3-way merge — purge → getc ← upstream

pre-purge
// memoryMap tries to memory map a file of uint32s for read only access.
func memoryMap(path string, lock bool) (*os.File, mmap.MMap, []uint32, error) {
file, err := os.OpenFile(path, os.O_RDONLY, 0644)
if err != nil {
return nil, nil, nil, err
}
mem, buffer, err := memoryMapFile(file, false)
if err != nil {
file.Close()
return nil, nil, nil, err
}
for i, magic := range dumpMagic {
if buffer[i] != magic {
mem.Unmap()
file.Close()
return nil, nil, nil, ErrInvalidDumpMagic
}
}
if lock {
if err := mem.Lock(); err != nil {
mem.Unmap()
file.Close()
return nil, nil, nil, err
}
}
return file, mem, buffer[len(dumpMagic):], err
}
core-geth validation — **Identical** ✅ | | | |---|---| | File | [`ethash.go`](https://github.com/etclabscore/core-geth/blob/v1.12.20/consensus/ethash/ethash.go) | | Symbol | `memoryMap` | | Ref | `v1.12.20` |

← Consensus & Ethash