mirror of
https://github.com/superseriousbusiness/gotosocial.git
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5e2bf0bdca
* [chore] Remove years from all license headers Years or year ranges aren't required in license headers. Many projects have removed them in recent years and it avoids a bit of yearly toil. In many cases our copyright claim was also a bit dodgy since we added the 2021-2023 header to files created after 2021 but you can't claim copyright into the past that way. * [chore] Add license header check This ensures a license header is always added to any new file. This avoids maintainers/reviewers needing to remember to check for and ask for it in case a contribution doesn't include it. * [chore] Add missing license headers * [chore] Further updates to license header * Use the more common // indentend comment format * Remove the hack we had for the linter now that we use the // format * Add SPDX license identifier
68 lines
1.9 KiB
Go
68 lines
1.9 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package timeline
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import (
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"container/list"
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)
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const (
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defaultDesiredIndexedItemsLength = 400
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defaultDesiredPreparedItemsLength = 50
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)
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func (t *timeline) Prune(desiredPreparedItemsLength int, desiredIndexedItemsLength int) int {
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t.Lock()
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defer t.Unlock()
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pruneList := func(pruneTo int, listToPrune *list.List) int {
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if listToPrune == nil {
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// no need to prune
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return 0
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}
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unprunedLength := listToPrune.Len()
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if unprunedLength <= pruneTo {
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// no need to prune
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return 0
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}
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// work from the back + assemble a slice of entries that we will prune
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amountStillToPrune := unprunedLength - pruneTo
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itemsToPrune := make([]*list.Element, 0, amountStillToPrune)
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for e := listToPrune.Back(); amountStillToPrune > 0; e = e.Prev() {
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itemsToPrune = append(itemsToPrune, e)
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amountStillToPrune--
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}
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// remove the entries we found
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var totalPruned int
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for _, e := range itemsToPrune {
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listToPrune.Remove(e)
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totalPruned++
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}
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return totalPruned
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}
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prunedPrepared := pruneList(desiredPreparedItemsLength, t.preparedItems.data)
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prunedIndexed := pruneList(desiredIndexedItemsLength, t.indexedItems.data)
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return prunedPrepared + prunedIndexed
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}
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