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* perf(subsonic): keep album/mediafile params on stack in response helpers Two helpers were forcing their entire value parameter onto the heap via pointer-to-field aliasing, adding one full-struct heap allocation per response item on hot Subsonic endpoints (search3, getAlbumList2, etc.). - childFromMediaFile assigned &mf.BirthTime to the returned Child, pulling the whole ~1KB model.MediaFile to the heap on every call. - buildDiscSubtitles passed &a.UpdatedAt to NewArtworkID inside a loop, pulling the whole model.Album to the heap on every album with discs. Both now copy the time.Time to a stack-local and use gg.P / &local so only the small time.Time escapes. Verified via go build -gcflags=-m=2: moved to heap: mf and moved to heap: a are gone at these sites. * perf(metadata): avoid per-track closure allocations in PID computation createGetPID was a factory that returned nested closures capturing mf model.MediaFile (~992 bytes) by reference. Since it is called three times per track during scans (trackPID, albumID, artistID), every track triggered the allocation of three closures plus a heap copy of the full MediaFile. Refactor the body into package-level functions (computePID, getPIDAttr) that take hash as an explicit parameter and the inner slice.Map callback to an indexed for loop, removing the closure-capture of mf entirely. trackPID/albumID/artistID now call computePID directly. The tiny createGetPID wrapper was kept only for tests; move the closure-building into the test file so production has no dead API. Verified via go build -gcflags=-m=2 on model/metadata: no "moved to heap: mf" anywhere in persistent_ids.go, and the callers in map_mediafile.go / map_participants.go no longer heap-promote their MediaFile argument. |
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| .. | ||
| criteria | ||
| id | ||
| metadata | ||
| request | ||
| album.go | ||
| album_test.go | ||
| annotation.go | ||
| artist.go | ||
| artist_info.go | ||
| artist_test.go | ||
| artwork_id.go | ||
| artwork_id_test.go | ||
| bookmark.go | ||
| datastore.go | ||
| errors.go | ||
| file_types.go | ||
| file_types_test.go | ||
| folder.go | ||
| folder_test.go | ||
| genre.go | ||
| get_entity.go | ||
| image.go | ||
| library.go | ||
| lyrics.go | ||
| lyrics_test.go | ||
| mediafile.go | ||
| mediafile_internal_test.go | ||
| mediafile_test.go | ||
| model_suite_test.go | ||
| participants.go | ||
| participants_test.go | ||
| player.go | ||
| playlist.go | ||
| playlist_test.go | ||
| playqueue.go | ||
| plugin.go | ||
| properties.go | ||
| radio.go | ||
| radio_test.go | ||
| scanner.go | ||
| scanner_test.go | ||
| scrobble.go | ||
| scrobble_buffer.go | ||
| searchable.go | ||
| share.go | ||
| tag.go | ||
| tag_mappings.go | ||
| tag_test.go | ||
| transcoding.go | ||
| user.go | ||
| user_props.go | ||
| user_test.go | ||