void
callCleaner(ByteBuffer byteBuffer) Perform "GC" of byte buffer
Method cleanerMethod = byteBuffer.getClass().getMethod("cleaner");
cleanerMethod.setAccessible(true);
Object cleaner = cleanerMethod.invoke(byteBuffer);
Method cleanMethod = cleaner.getClass().getMethod("clean");
cleanMethod.setAccessible(true);
cleanMethod.invoke(cleaner);
void
cleanBuffer(final ByteBuffer bb) clean Buffer
bb.rewind();
int remain = 0;
while ((remain = bb.remaining()) > 0) {
final int r = remain & 0x7;
if (r == 0) {
bb.putLong(0L);
} else {
if ((r & 0x4) != 0) {
...
void
cleanDirectBuffer(ByteBuffer buffer) Force to unmap direct buffer if the buffer is no longer used.
if (buffer == null) {
return;
if (buffer.isDirect()) {
Cleaner cleaner = ((DirectBuffer) buffer).cleaner();
cleaner.clean();
Method
getCleanerMethod(final ByteBuffer buffer) get Cleaner Method
Method result = cleanerMethodCache.get(buffer.getClass());
if (result == null) {
result = buffer.getClass().getMethod("cleaner", (Class[]) null);
result.setAccessible(true);
cleanerMethodCache.put(buffer.getClass(), result);
return result;