mirror of
https://github.com/seaweedfs/seaweedfs.git
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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 985137ec47.
* 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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