Hypervisor.framework is a powerful API provided by Apple that allows developers to create and manage virtual machines (VMs) on macOS. This framework is particularly important for developers who need to test software in different environments, run multiple operating systems on a single machine, or develop virtualization software. Unlike other virtualization solutions, Hypervisor.framework is tightly integrated with macOS, offering better performance and stability.

The Hypervisor.framework is designed to be used with Swift or Objective-C, and it provides a high-level interface to the low-level hardware virtualization features of Intel and Apple Silicon processors. This makes it an excellent choice for developers working within the Apple ecosystem.

Examples:

1. Setting Up a Simple Virtual Machine:

   To get started with Hypervisor.framework, you need to import the framework and set up a basic virtual machine. Below is an example in Swift:

   import Hypervisor
   
   func createVM() {
      // Create a virtual machine configuration
      let vmConfig = VZVirtualMachineConfiguration()
   
      // Set the CPU and memory configuration
      let cpuCount = 2
      let memorySize = 2 * 1024 * 1024 * 1024 // 2 GB
      vmConfig.cpuCount = cpuCount
      vmConfig.memorySize = memorySize
   
      // Validate the configuration
      do {
          try vmConfig.validate()
      } catch {
          print("Invalid VM configuration: \(error)")
          return
      }
   
      // Create the virtual machine
      let virtualMachine = VZVirtualMachine(configuration: vmConfig)
      print("Virtual machine created successfully.")
   }
   
   createVM()

2. Running a Virtual Machine:

   After creating a virtual machine, you need to load a bootable image and start the VM. Here is an example of how to load a Linux kernel image and start the VM:

   import Hypervisor
   
   func startVM() {
      let vmConfig = VZVirtualMachineConfiguration()
      vmConfig.cpuCount = 2
      vmConfig.memorySize = 2 * 1024 * 1024 * 1024 // 2 GB
   
      // Load the Linux kernel image
      let kernelURL = URL(fileURLWithPath: "/path/to/vmlinuz")
      let kernel = VZLinuxKernelBootLoader(kernelURL: kernelURL)
      vmConfig.bootLoader = kernel
   
      // Validate the configuration
      do {
          try vmConfig.validate()
      } catch {
          print("Invalid VM configuration: \(error)")
          return
      }
   
      // Create and start the virtual machine
      let virtualMachine = VZVirtualMachine(configuration: vmConfig)
      virtualMachine.start { result in
          switch result {
          case .success:
              print("Virtual machine started successfully.")
          case .failure(let error):
              print("Failed to start virtual machine: \(error)")
          }
      }
   }
   
   startVM()