d4566d4aaa
* compare chunks by timestamp * fix slab clearing error * fix test compilation * move oldest chunk to sealed, instead of by fullness * lock on fh.entryViewCache * remove verbose logs * revert slat clearing * less logs * less logs * track write and read by timestamp * remove useless logic * add entry lock on file handle release * use mem chunk only, swap file chunk has problems * comment out code that maybe used later * add debug mode to compare data read and write * more efficient readResolvedChunks with linked list * small optimization * fix test compilation * minor fix on writer * add SeparateGarbageChunks * group chunks into sections * turn off debug mode * fix tests * fix tests * tmp enable swap file chunk * Revert "tmp enable swap file chunk" This reverts commit 985137ec472924e4815f258189f6ca9f2168a0a7. * simple refactoring * simple refactoring * do not re-use swap file chunk. Sealed chunks should not be re-used. * comment out debugging facilities * either mem chunk or swap file chunk is fine now * remove orderedMutex as *semaphore.Weighted not found impactful * optimize size calculation for changing large files * optimize performance to avoid going through the long list of chunks * still problems with swap file chunk * rename * tiny optimization * swap file chunk save only successfully read data * fix * enable both mem and swap file chunk * resolve chunks with range * rename * fix chunk interval list * also change file handle chunk group when adding chunks * pick in-active chunk with time-decayed counter * fix compilation * avoid nil with empty fh.entry * refactoring * rename * rename * refactor visible intervals to *list.List * refactor chunkViews to *list.List * add IntervalList for generic interval list * change visible interval to use IntervalList in generics * cahnge chunkViews to *IntervalList[*ChunkView] * use NewFileChunkSection to create * rename variables * refactor * fix renaming leftover * renaming * renaming * add insert interval * interval list adds lock * incrementally add chunks to readers Fixes: 1. set start and stop offset for the value object 2. clone the value object 3. use pointer instead of copy-by-value when passing to interval.Value 4. use insert interval since adding chunk could be out of order * fix tests compilation * fix tests compilation
93 lines
2.2 KiB
Go
93 lines
2.2 KiB
Go
package mount
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import (
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/mount/page_writer"
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)
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type PageWriter struct {
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fh *FileHandle
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collection string
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replication string
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chunkSize int64
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writerPattern *WriterPattern
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randomWriter page_writer.DirtyPages
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}
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var (
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_ = page_writer.DirtyPages(&PageWriter{})
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)
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func newPageWriter(fh *FileHandle, chunkSize int64) *PageWriter {
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pw := &PageWriter{
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fh: fh,
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chunkSize: chunkSize,
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writerPattern: NewWriterPattern(chunkSize),
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randomWriter: newMemoryChunkPages(fh, chunkSize),
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}
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return pw
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}
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func (pw *PageWriter) AddPage(offset int64, data []byte, isSequential bool, tsNs int64) {
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glog.V(4).Infof("%v AddPage [%d, %d)", pw.fh.fh, offset, offset+int64(len(data)))
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chunkIndex := offset / pw.chunkSize
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for i := chunkIndex; len(data) > 0; i++ {
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writeSize := min(int64(len(data)), (i+1)*pw.chunkSize-offset)
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pw.addToOneChunk(i, offset, data[:writeSize], isSequential, tsNs)
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offset += writeSize
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data = data[writeSize:]
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}
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}
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func (pw *PageWriter) addToOneChunk(chunkIndex, offset int64, data []byte, isSequential bool, tsNs int64) {
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pw.randomWriter.AddPage(offset, data, isSequential, tsNs)
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}
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func (pw *PageWriter) FlushData() error {
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return pw.randomWriter.FlushData()
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}
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func (pw *PageWriter) ReadDirtyDataAt(data []byte, offset int64, tsNs int64) (maxStop int64) {
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glog.V(4).Infof("ReadDirtyDataAt %v [%d, %d)", pw.fh.fh, offset, offset+int64(len(data)))
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chunkIndex := offset / pw.chunkSize
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for i := chunkIndex; len(data) > 0; i++ {
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readSize := min(int64(len(data)), (i+1)*pw.chunkSize-offset)
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maxStop = pw.randomWriter.ReadDirtyDataAt(data[:readSize], offset, tsNs)
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offset += readSize
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data = data[readSize:]
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}
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return
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}
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func (pw *PageWriter) LockForRead(startOffset, stopOffset int64) {
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pw.randomWriter.LockForRead(startOffset, stopOffset)
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}
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func (pw *PageWriter) UnlockForRead(startOffset, stopOffset int64) {
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pw.randomWriter.UnlockForRead(startOffset, stopOffset)
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}
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func (pw *PageWriter) Destroy() {
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pw.randomWriter.Destroy()
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}
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func max(x, y int64) int64 {
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if x > y {
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return x
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}
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return y
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}
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func min(x, y int64) int64 {
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if x < y {
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return x
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}
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return y
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}
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