boolean increaseQueueSize() { long oldVal = queueSize; int oldSize = currentQueueSizeOf(oldVal); if (oldSize >= maxQueueSizeOf(oldVal)) { // reject return false; } int newSize = oldSize + 1; while (! compareAndSetQueueSize(oldVal, withCurrentQueueSize(oldVal, newSize))) { if (UPDATE_STATISTICS) spinMisses.increment(); oldVal = queueSize; oldSize = currentQueueSizeOf(oldVal); if (oldSize >= maxQueueSizeOf(oldVal)) { // reject return false; } newSize = oldSize + 1; } if (UPDATE_STATISTICS) { do { // oldSize now represents the old peak size oldSize = peakQueueSize; if (newSize <= oldSize) break; } while (! compareAndSetPeakQueueSize(oldSize, newSize)); } return true; }
boolean increaseQueueSize() { long oldVal = queueSize; int oldSize = currentQueueSizeOf(oldVal); if (oldSize >= maxQueueSizeOf(oldVal)) { // reject return false; } int newSize = oldSize + 1; while (! compareAndSetQueueSize(oldVal, withCurrentQueueSize(oldVal, newSize))) { if (UPDATE_STATISTICS) spinMisses.increment(); oldVal = queueSize; oldSize = currentQueueSizeOf(oldVal); if (oldSize >= maxQueueSizeOf(oldVal)) { // reject return false; } newSize = oldSize + 1; } if (UPDATE_STATISTICS) { do { // oldSize now represents the old peak size oldSize = peakQueueSize; if (newSize <= oldSize) break; } while (! compareAndSetPeakQueueSize(oldSize, newSize)); } return true; }
boolean increaseQueueSize() { long oldVal = queueSize; int oldSize = currentQueueSizeOf(oldVal); if (oldSize >= maxQueueSizeOf(oldVal)) { // reject return false; } int newSize = oldSize + 1; while (! compareAndSetQueueSize(oldVal, withCurrentQueueSize(oldVal, newSize))) { if (UPDATE_STATISTICS) spinMisses.increment(); oldVal = queueSize; oldSize = currentQueueSizeOf(oldVal); if (oldSize >= maxQueueSizeOf(oldVal)) { // reject return false; } newSize = oldSize + 1; } if (UPDATE_STATISTICS) { do { // oldSize now represents the old peak size oldSize = peakQueueSize; if (newSize <= oldSize) break; } while (! compareAndSetPeakQueueSize(oldSize, newSize)); } return true; }