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add stake lock handling

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This commit is contained in:
Shrenuj Bansal 2023-08-14 21:47:27 -04:00
parent 16fb7cc0da
commit 854d3c80dd
1 changed files with 11 additions and 2 deletions
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13
storage/paths/db_index.go
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@ -725,6 +725,9 @@ func (dbi *DBIndex) StorageBestAlloc(ctx context.Context, allocate storiface.Sec
return result, nil
}
// timeout after which we consider a lock to be stale
const LockTimeOut = 300 * time.Second
func (dbi *DBIndex) lock(ctx context.Context, sector abi.SectorID, read storiface.SectorFileType, write storiface.SectorFileType) (bool, error) {
if read|write == 0 {
return false, nil
@ -769,15 +772,21 @@ func (dbi *DBIndex) lock(ctx context.Context, sector abi.SectorID, read storifac
}
// Check if we can acquire write locks
// Conditions: No write lock or write lock is stale, No read lock or read lock is stale
for wft := range write.AllSet() {
if lockMap[storiface.SectorFileType(wft)].writeTs.Valid || lockMap[storiface.SectorFileType(wft)].readTs.Valid {
if (lockMap[storiface.SectorFileType(wft)].writeTs.Valid &&
lockMap[storiface.SectorFileType(wft)].writeTs.Time.After(time.Now().Add(LockTimeOut))) ||
(lockMap[storiface.SectorFileType(wft)].readTs.Valid &&
lockMap[storiface.SectorFileType(wft)].writeTs.Time.After(time.Now().Add(LockTimeOut))) {
return false, xerrors.Errorf("Cannot acquire writelock for sector %v filetype %d already locked", sector, wft)
}
}
// Check if we can acquire read locks
// Conditions: No write lock or write lock is stale
for rft := range read.AllSet() {
if lockMap[storiface.SectorFileType(rft)].writeTs.Valid {
if lockMap[storiface.SectorFileType(rft)].writeTs.Valid &&
lockMap[storiface.SectorFileType(rft)].writeTs.Time.After(time.Now().Add(LockTimeOut)) {
return false, xerrors.Errorf("Cannot acquire read lock for sector %v filetype %d already locked for writing", sector, rft)
}
}