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Make releaseMemory private and return byte array instead, fix other platform compilation issues, reduce in-memory chunk size.

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This commit is contained in:
j.laycock 2019-10-01 12:21:44 +01:00
parent d5f5acb734
commit eb27c2b037
4 changed files with 24 additions and 27 deletions
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12
weed/storage/memory_map/memory_map.go
View file

@ -25,16 +25,16 @@ type MemoryMap struct {
var FileMemoryMap = make(map[string]*MemoryMap)
func (mMap *MemoryMap) CreateMemoryMap(file *os.File, maxLength uint64) {
}
func (mMap *MemoryMap) WriteMemory(offset uint64, length uint64, data []byte) {
}
func (mMap *MemoryMap) ReadMemory(offset uint64, length uint64) (MemoryBuffer, error) {
return MemoryBuffer{}, fmt.Errorf("Memory Map not implemented for this platform")
}
func (mBuffer *MemoryBuffer) ReleaseMemory() {
func (mMap *MemoryMap) ReadMemory(offset uint64, length uint64) ([]byte, error) {
dataSlice := []byte{}
return dataSlice, fmt.Errorf("Memory Map not implemented for this platform")
}
func (mBuffer *MemoryMap) DeleteFileAndMemoryMap() {

22
weed/storage/memory_map/memory_map_windows.go
View file

@ -48,7 +48,7 @@ var currentMaxWorkingSet uint64 = 0
var _ = getProcessWorkingSetSize(uintptr(currentProcess), &currentMinWorkingSet, &currentMaxWorkingSet)
var systemInfo, _ = getSystemInfo()
var chunkSize = uint64(systemInfo.dwAllocationGranularity) * 256
var chunkSize = uint64(systemInfo.dwAllocationGranularity) * 128
var memoryStatusEx, _ = globalMemoryStatusEx()
var maxMemoryLimitBytes = uint64(float64(memoryStatusEx.ullTotalPhys) * 0.8)
@ -82,7 +82,7 @@ func (mMap *MemoryMap) DeleteFileAndMemoryMap() {
windows.CloseHandle(windows.Handle(mMap.File.Fd()))
for _, view := range mMap.write_map_views {
view.ReleaseMemory()
view.releaseMemory()
}
mMap.write_map_views = nil
@ -130,17 +130,21 @@ func (mMap *MemoryMap) WriteMemory(offset uint64, length uint64, data []byte) {
}
}
func (mMap *MemoryMap) ReadMemory(offset uint64, length uint64) (MemoryBuffer, error) {
return allocate(windows.Handle(mMap.file_memory_map_handle), offset, length, false)
func (mMap *MemoryMap) ReadMemory(offset uint64, length uint64) (dataSlice []byte, err error) {
dataSlice = make([]byte, length)
mBuffer, err := allocate(windows.Handle(mMap.file_memory_map_handle), offset, length, false)
copy(dataSlice, mBuffer.Buffer)
mBuffer.releaseMemory()
return dataSlice, err
}
func (mBuffer *MemoryBuffer) ReleaseMemory() {
func (mBuffer *MemoryBuffer) releaseMemory() {
windows.VirtualUnlock(mBuffer.aligned_ptr, uintptr(mBuffer.aligned_length))
windows.UnmapViewOfFile(mBuffer.aligned_ptr)
currentMinWorkingSet = currentMinWorkingSet - mBuffer.aligned_length
currentMaxWorkingSet = currentMaxWorkingSet - mBuffer.aligned_length
currentMinWorkingSet -= mBuffer.aligned_length
currentMaxWorkingSet -= mBuffer.aligned_length
if currentMinWorkingSet < maxMemoryLimitBytes {
var _ = setProcessWorkingSetSize(uintptr(currentProcess), currentMinWorkingSet, currentMaxWorkingSet)
@ -182,8 +186,8 @@ func allocate(hMapFile windows.Handle, offset uint64, length uint64, write bool)
access = windows.FILE_MAP_WRITE
}
currentMinWorkingSet = currentMinWorkingSet + aligned_length
currentMaxWorkingSet = currentMaxWorkingSet + aligned_length
currentMinWorkingSet += aligned_length
currentMaxWorkingSet += aligned_length
if currentMinWorkingSet < maxMemoryLimitBytes {
// increase the process working set size to hint to windows memory manager to

11
weed/storage/needle/needle_read_write.go
View file

@ -164,13 +164,11 @@ func (n *Needle) Append(w *os.File, version Version) (offset uint64, size uint32
func ReadNeedleBlob(r *os.File, offset int64, size uint32, version Version) (dataSlice []byte, err error) {
dataSize := GetActualSize(size, version)
dataSlice = make([]byte, dataSize)
dataSlice = make([]byte, int(dataSize))
mMap, exists := memory_map.FileMemoryMap[r.Name()]
if exists {
mBuffer, err := mMap.ReadMemory(uint64(offset), uint64(dataSize))
copy(dataSlice, mBuffer.Buffer)
mBuffer.ReleaseMemory()
dataSlice, err := mMap.ReadMemory(uint64(offset), uint64(dataSize))
return dataSlice, err
} else {
_, err = r.ReadAt(dataSlice, offset)
@ -291,10 +289,7 @@ func ReadNeedleHeader(r *os.File, version Version, offset int64) (n *Needle, byt
mMap, exists := memory_map.FileMemoryMap[r.Name()]
if exists {
mBuffer, err := mMap.ReadMemory(uint64(offset), NeedleHeaderSize)
copy(bytes, mBuffer.Buffer)
mBuffer.ReleaseMemory()
bytes, err = mMap.ReadMemory(uint64(offset), NeedleHeaderSize)
if err != nil {
return nil, bytes, 0, err
}

6
weed/storage/volume_super_block.go
View file

@ -113,13 +113,11 @@ func ReadSuperBlock(dataFile *os.File) (superBlock SuperBlock, err error) {
header := make([]byte, _SuperBlockSize)
mMap, exists := memory_map.FileMemoryMap[dataFile.Name()]
if exists {
mBuffer, e := mMap.ReadMemory(0, _SuperBlockSize)
header, err = mMap.ReadMemory(0, _SuperBlockSize)
if err != nil {
err = fmt.Errorf("cannot read volume %s super block: %v", dataFile.Name(), e)
err = fmt.Errorf("cannot read volume %s super block: %v", dataFile.Name(), err)
return
}
copy(header, mBuffer.Buffer)
mBuffer.ReleaseMemory()
} else {
if _, err = dataFile.Seek(0, 0); err != nil {
err = fmt.Errorf("cannot seek to the beginning of %s: %v", dataFile.Name(), err)