wForget commented on code in PR #9424:
URL: https://github.com/apache/incubator-gluten/pull/9424#discussion_r2065245194
##########
cpp/velox/memory/VeloxMemoryManager.cc:
##########
@@ -168,7 +168,13 @@ class ListenableArbitrator : public
velox::memory::MemoryArbitrator {
}
auto reclaimedFreeBytes = shrinkPool(pool, 0);
auto neededBytes = velox::bits::roundUp(bytes - reclaimedFreeBytes,
memoryPoolTransferCapacity_);
- listener_->allocationChanged(neededBytes);
+ try {
+ listener_->allocationChanged(neededBytes);
+ } catch (const std::exception& e) {
+ // if allocationChanged failed, we need to free the reclaimed bytes
+ listener_->allocationChanged(-reclaimedFreeBytes);
+ throw e;
Review Comment:
Is it ok like this?
```
try {
listener_->allocationChanged(neededBytes);
} catch (const std::exception&) {
// if allocationChanged failed, we need to free the reclaimed bytes
listener_->allocationChanged(-reclaimedFreeBytes);
std::rethrow_exception(std::current_exception());
}
```
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