Source:
public void run() { Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); Request request; while (true) { try { request = mQueue.take(); } catch (InterruptedException e) { if (mQuit) { return; } continue; } try { request.addMarker("network-queue-take"); if (request.isCanceled()) { request.finish("network-discard-cancelled"); continue; } if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) { TrafficStats.setThreadStatsTag(request.getTrafficStatsTag()); } NetworkResponse networkResponse = mNetwork.performRequest(request); request.addMarker("network-http-complete"); if (networkResponse.notModified) { if (request.hasHadResponseDelivered()) { request.finish("not-modified-already-delivered"); continue; } else { request.addMarker("not-modified-but-will-deliver"); } } Response<?> response = request.parseNetworkResponse(networkResponse); request.addMarker("network-parse-complete"); if (request.shouldCache() && response.cacheEntry != null) { mCache.put(request.getCacheKey(), response.cacheEntry); request.addMarker("network-cache-written"); } if (request.hasHadResponseDelivered() && request.getReturnStrategy() == ReturnStrategy.NETWORK_IF_NO_CACHE) { continue; } mDelivery.postResponse(request, response); request.markDelivered(); } catch (VolleyError volleyError) { if (request.hasHadResponseDelivered() && request.getReturnStrategy() == ReturnStrategy.NETWORK_IF_NO_CACHE) { continue; } parseAndDeliverNetworkError(request, volleyError); } catch (Exception e) { VolleyLog.e(e, "Unhandled exception %s", e.toString()); if (request.hasHadResponseDelivered() && request.getReturnStrategy() == ReturnStrategy.NETWORK_IF_NO_CACHE) { continue; } mDelivery.postError(request, new VolleyError(e)); } } }

Target:
public void run() { Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); Request request; while (true) { try { request = mQueue.take(); } catch (InterruptedException e) { if (mQuit) { return; } continue; } try { request.addMarker("network-queue-take"); if (request.isCanceled()) { request.finish("network-discard-cancelled"); continue; } if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) { TrafficStats.setThreadStatsTag(request.getTrafficStatsTag()); } NetworkResponse networkResponse = mNetwork.performRequest(request); request.addMarker("network-http-complete"); if (networkResponse.notModified) { if (request.hasHadResponseDelivered()) { request.finish("not-modified-already-delivered"); continue; } else { request.addMarker("not-modified-but-will-deliver"); } } Response<?> response = request.parseNetworkResponse(networkResponse); request.addMarker("network-parse-complete"); if (request.shouldCache() && response.cacheEntry != null) { mCache.put(request.getCacheKey(), response.cacheEntry); request.addMarker("network-cache-written"); } if (request.hasHadResponseDelivered() && request.getReturnStrategy() == ReturnStrategy.NETWORK_IF_NO_CACHE) { continue; } request.markDelivered(); mDelivery.postResponse(request, response); } catch (VolleyError volleyError) { if (request.hasHadResponseDelivered() && request.getReturnStrategy() == ReturnStrategy.NETWORK_IF_NO_CACHE) { continue; } parseAndDeliverNetworkError(request, volleyError); } catch (Exception e) { VolleyLog.e(e, "Unhandled exception %s", e.toString()); if (request.hasHadResponseDelivered() && request.getReturnStrategy() == ReturnStrategy.NETWORK_IF_NO_CACHE) { continue; } mDelivery.postError(request, new VolleyError(e)); } } }