nio/ch/FileChannelImpl.java

83     private final Object positionLock = new Object();
156         synchronized (positionLock) {
184         synchronized (positionLock) {
208         synchronized (positionLock) {
236         synchronized (positionLock) {
260         synchronized (positionLock) {
286         synchronized (positionLock) {
308         synchronized (positionLock) {
334         synchronized (positionLock) {
425                Thread.holdsLock(positionLock);
490             synchronized (positionLock) {
632         synchronized (src.positionLock) {
730             synchronized (positionLock) {
739         assert !nd.needsPositionLock() || Thread.holdsLock(positionLock);
769             synchronized (positionLock) {
778         assert !nd.needsPositionLock() || Thread.holdsLock(positionLock);
903             synchronized (positionLock) {