29 lines
950 B
Go
29 lines
950 B
Go
package ffiwrapper
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import (
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"github.com/filecoin-project/lotus/extern/sector-storage/partialfile"
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"golang.org/x/xerrors"
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rlepluslazy "github.com/filecoin-project/go-bitfield/rle"
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"github.com/filecoin-project/go-state-types/abi"
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"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
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)
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// merge gaps between ranges which are close to each other
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// TODO: more benchmarking to come up with more optimal number
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const mergeGaps = 32 << 20
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// TODO const expandRuns = 16 << 20 // unseal more than requested for future requests
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func computeUnsealRanges(unsealed rlepluslazy.RunIterator, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize) (rlepluslazy.RunIterator, error) {
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todo := partialfile.PieceRun(offset.Padded(), size.Padded())
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todo, err := rlepluslazy.Subtract(todo, unsealed)
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if err != nil {
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return nil, xerrors.Errorf("compute todo-unsealed: %w", err)
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}
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return rlepluslazy.JoinClose(todo, mergeGaps)
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}
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