Occlusion Notifications

applicationDidChangeOcclusionState: in NSApplicationDelegate Protocol Reference

NSApplicationDidChangeOcclusionStateNotification in NSApplication Class Reference

NSWindowDidChangeOcclusionStateNotification in NSWindow Class Reference

occlusionState in NSApplication Class Reference

occlusionState in NSWindow Class Reference

windowDidChangeOcclusionState: in NSWindowDelegate Protocol Reference

Active App Transitions

applicationWillResignActive: in NSApplicationDelegate Protocol Reference

applicationDidResignActive: in NSApplicationDelegate Protocol Reference

applicationWillBecomeActive: in NSApplicationDelegate Protocol Reference

applicationDidBecomeActive: in NSApplicationDelegate Protocol Reference

NSApplicationWillResignActiveNotification in NSApplication Class Reference

NSApplicationDidResignActiveNotification in NSApplication Class Reference

NSApplicationWillBecomeActiveNotification in NSApplication Class Reference

NSApplicationDidBecomeActiveNotification in NSApplication Class Reference

Quality of Service Classes (QoS)

Concurrency Programming Guide

Grand Central Dispatch (GCD) Reference

NSOperation Class Reference

NSOperationQueue Class Reference

NSTask Class Reference

NSThread Class Reference

powermetrics(1) Mac OS X Manual Page

spindump(8) Mac OS X Manual Page

Testing with Xcode

Grand Central Dispatch (GCD)

Concurrency Programming Guide

Grand Central Dispatch (GCD) Reference

Scheduling Background Activity

NSActivityBackground in NSProcessInfo Class Reference

beginActivityWithOptions:reason: in NSProcessInfo Class Reference

performActivityWithOptions:reason:usingBlock: in NSProcessInfo Class Reference

Scheduling Background Networking

NSURLSessionDataDelegate Protocol Reference

NSURLSessionDelegate Protocol Reference

NSURLSessionDownloadDelegate Protocol Reference

NSURLSessionTaskDelegate Protocol Reference

NSURL Class Reference

NSURLRequest Class Reference

NSURLSession Class Reference

XPC Activity

activity.h Reference in XPC Services API Reference

Daemons and Services Programming Guide

XPC Services API Reference

Minimizing I/O

fs_usage(1) Mac OS X Manual Page

Instruments User Guide

Networking Overview

Performance Tips in File System Programming Guide

Testing with Xcode

Xcode Overview

Minimizing Timer Usage

CFRunLoop Reference

Concurrency Programming Guide

Creating XPC Services in Daemons and Services Programming Guide

Darwin Notification API Reference

Determining Reachability and Getting Connected in System Configuration Programming Guidelines

Disk Arbitration Programming Guide

DNS Service Discovery Programming Guide and NSNetServices and CFNetServices Programming Guide

File System Events Programming Guide

Finding and Accessing Devices in Accessing Hardware From Applications

Grand Central Dispatch (GCD) Reference

Local and Remote Notification Programming Guide

Monitoring Events in Cocoa Event Handling Guide

NSDistributedNotificationCenter Class Reference

NSTimer Class Reference

sleep(3) Mac OS X Developer Tools Manual Page

Synchronization in Threading Programming Guide

timerfires(1) Mac OS X Manual Page

usleep(3) Mac OS X Developer Tools Manual Page

Avoiding Extraneous Content Updates

Drawing Performance Guidelines

getRectsBeingDrawn:count: in NSView Class Reference

needsToDrawRect: in NSView Class Reference

Optimizing View Drawing in View Programming Guide

General Resources

Debug Your App in Xcode Overview

Instruments User Guide

Testing with Xcode

Monitoring Energy Usage

dtrace(1) Mac OS X Manual Page

fs_usage(1) Mac OS X Manual Page

pmset(1) Mac OS X Manual Page

powermetrics(1) Mac OS X Manual Page

sample(1) Mac OS X Manual Page

spindump(8) Mac OS X Manual Page

timerfires(1) Mac OS X Manual Page

top(1) Mac OS X Manual Page

Performance Testing

Performance Overview