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reduce memory allocation

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This commit is contained in:
Chris Lu 2020-08-16 16:24:40 -07:00
parent 2ba817afac
commit ee0f92a6be
1 changed files with 6 additions and 2 deletions
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8
weed/filesys/filehandle.go
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@ -54,9 +54,13 @@ var _ = fs.HandleReleaser(&FileHandle{})
func (fh *FileHandle) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error { func (fh *FileHandle) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error {
glog.V(5).Infof("%s read fh %d: [%d,%d)", fh.f.fullpath(), fh.handle, req.Offset, req.Offset+int64(req.Size)) glog.V(0).Infof("%s read fh %d: [%d,%d) size %d resp.Data len=%d cap=%d", fh.f.fullpath(), fh.handle, req.Offset, req.Offset+int64(req.Size), req.Size, len(resp.Data), cap(resp.Data))
buff := make([]byte, req.Size) buff := resp.Data[:cap(resp.Data)]
if req.Size > cap(resp.Data) {
// should not happen
buff = make([]byte, req.Size)
}
totalRead, err := fh.readFromChunks(buff, req.Offset) totalRead, err := fh.readFromChunks(buff, req.Offset)
if err == nil { if err == nil {