public long freeMemory() {
long memoryFreed = 0;
for (MemoryBlock block : allocatedPages) {
memoryManager.freePage(block);
shuffleMemoryManager.release(block.size());
memoryFreed += block.size();
}
allocatedPages.clear();
currentPage = null;
currentPagePosition = -1;
freeSpaceInCurrentPage = 0;
return memoryFreed;
}
/**
* Clean up all allocated memory and pages. Returns the number of bytes freed. A non-zero return
* value can be used to detect memory leaks.
*/
public long cleanUpAllAllocatedMemory() {
long freedBytes = 0;
for (MemoryBlock page : pageTable) {
if (page != null) {
freedBytes += page.size();
freePage(page);
}
}
final Iterator<MemoryBlock> iter = allocatedNonPageMemory.iterator();
while (iter.hasNext()) {
final MemoryBlock memory = iter.next();
freedBytes += memory.size();
// We don't call free() here because that calls Set.remove, which would lead to a
// ConcurrentModificationException here.
executorMemoryManager.free(memory);
iter.remove();
}
return freedBytes;
}