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d129baba7a
This method had a buffer argument, but that was nil at all call sites. That's removed, and instead LoadUnpacked now reuses whatever it allocates inside its retry loop.
36 lines
1.1 KiB
Go
36 lines
1.1 KiB
Go
package index
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import (
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"context"
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"runtime"
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"sync"
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"github.com/restic/restic/internal/restic"
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)
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// ForAllIndexes loads all index files in parallel and calls the given callback.
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// It is guaranteed that the function is not run concurrently. If the callback
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// returns an error, this function is cancelled and also returns that error.
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func ForAllIndexes(ctx context.Context, repo restic.Repository,
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fn func(id restic.ID, index *Index, oldFormat bool, err error) error) error {
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// decoding an index can take quite some time such that this can be both CPU- or IO-bound
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// as the whole index is kept in memory anyways, a few workers too much don't matter
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workerCount := repo.Connections() + uint(runtime.GOMAXPROCS(0))
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var m sync.Mutex
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return restic.ParallelList(ctx, repo.Backend(), restic.IndexFile, workerCount, func(ctx context.Context, id restic.ID, size int64) error {
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var err error
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var idx *Index
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oldFormat := false
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buf, err := repo.LoadUnpacked(ctx, restic.IndexFile, id)
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if err == nil {
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idx, oldFormat, err = DecodeIndex(buf, id)
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}
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m.Lock()
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defer m.Unlock()
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return fn(id, idx, oldFormat, err)
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})
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}
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