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avoid concurrent access to map object

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fix https://github.com/chrislusf/seaweedfs/issues/2866
This commit is contained in:
chrislu 2022-04-03 01:08:25 -07:00
parent 6a2bcd03aa
commit e8d7bb42e2
1 changed files with 12 additions and 5 deletions
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17
weed/mount/page_writer/page_chunk_swapfile.go
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@ -5,6 +5,7 @@ import (
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/chrislusf/seaweedfs/weed/util/mem"
"os"
"sync"
)
var (
@ -14,11 +15,12 @@ var (
type ActualChunkIndex int
type SwapFile struct {
dir string
file *os.File
logicToActualChunkIndex map[LogicChunkIndex]ActualChunkIndex
chunkSize int64
freeActualChunkList []ActualChunkIndex
dir string
file *os.File
logicToActualChunkIndex map[LogicChunkIndex]ActualChunkIndex
logicToActualChunkIndexLock sync.Mutex
chunkSize int64
freeActualChunkList []ActualChunkIndex
}
type SwapFileChunk struct {
@ -52,6 +54,8 @@ func (sf *SwapFile) NewTempFileChunk(logicChunkIndex LogicChunkIndex) (tc *SwapF
return nil
}
}
sf.logicToActualChunkIndexLock.Lock()
defer sf.logicToActualChunkIndexLock.Unlock()
actualChunkIndex, found := sf.logicToActualChunkIndex[logicChunkIndex]
if !found {
if len(sf.freeActualChunkList) > 0 {
@ -72,6 +76,9 @@ func (sf *SwapFile) NewTempFileChunk(logicChunkIndex LogicChunkIndex) (tc *SwapF
}
func (sc *SwapFileChunk) FreeResource() {
sc.swapfile.logicToActualChunkIndexLock.Lock()
defer sc.swapfile.logicToActualChunkIndexLock.Unlock()
sc.swapfile.freeActualChunkList = append(sc.swapfile.freeActualChunkList, sc.actualChunkIndex)
delete(sc.swapfile.logicToActualChunkIndex, sc.logicChunkIndex)
}