Евгений Напрягло ".NET Framework Hosting API Overview"
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The .NET CLR Hosting API allows a native application to host and control the .NET Common Language Runtime (CLR). This enables: 1. Customizing the CLR's runtime behavior through policies, assembly loading, memory management, and more. 2. Monitoring and debugging CLR applications through profiling and debugging APIs. 3. Integrating the CLR into native applications and environments like device drivers through a hosting interface.
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Евгений Напрягло ".NET Framework Hosting API Overview"
- 1. .NET CLR Hosting API Evgen Napryaglo Intetics
- 2. 1. Runtime Customizations Runtime Assembly Loading Policy Management Host Protection Memory Management Garbage Collection I/O Completion CLR Events Task Management Synchronization Management Thread Pool Management Application Host – Native Environment .NET Application Environment
- 3. Objectives • Monitoring • Diagnostics • Customization • Restriction • Integration • Extensibility Development Operations Product Development Enterprise Integration
- 4. 2. Execution & State Monitoring Profiling API Debugging API
- 6. Initialization Flow :Host :mscoree :Runtime CorBindToRuntimeEx ICLRRuntimeHost SetHostControl Start Initialization ICLRControl Status GetCLRControl ICLRControl ExecuteInDefaultAppDomain
- 7. Assembly Loading ICLRAssemblyReferenceList ICLRAssemblyIdentityManager • The location from which assemblies are loaded • The way versions are managed • The formats from which assemblies can be loaded Customize IHostAssemblyManager IHostAssemblyStore
- 8. Synchronization Management IHostSyncManager ICLRSyncManager Enables the host to implement its own synchronization primitives for the runtime to use. Custom Events IHostManualEvent, IHostAutoEvent Critical Section Semaphore IHostSemaphore IHostCrst
- 9. Policy Management ICLRPolicyManager IHostPolicyManager Enables the host to specify the way program failures are handled, to support different reliability requirements. NoAction ThrowException AbortThread RudeAbortThread UnloadAppDomain RudeUnloadAppDomain ExitProcess FastExitProcess RudeExitProcess DisableRuntime NonCriticalResource CriticalResource FatalRuntime OrphanedLock StackOverflow ThreadAbort ThreadRudeAbortInNonCriticalRegion ThreadRudeAbortInCriticalRegion AppDomainUnload AppDomainRudeUnload ProcessExit FinalizerRun ActionsFailures Events
- 10. Host Protection Enables the host to enforce its own programming model, by preventing the use of specified types or members. ICLRHostProtectionManager Reflection Licensing Synchronization UI Components
- 11. Thread Pool Management Enables the host to implement its own thread pool for the runtime to use. IHostThreadPoolManager GetAvailableThreads GetMaxThreads GetMinThreads QueueUserWorkItem SetMaxThreads SetMinThreads
- 12. I/O Completion IHostIoCompletionManager Enables the host to implement its own implementation of asynchronous input/output. ICLRIoCompletionManager CLR Host IHostIoCompletionManager ICLRIoCompletionManager IO Operations Calls Results & Feedback
- 13. Profiling • Class loading and unloading events. • Thread creation and destruction events. • Function entry and exit events. • Exceptions. • Transitions between different runtime contexts. • Information about runtime suspensions. • Information about the runtime memory heap and garbage collection activity. Application For Profiling CLR HOST IPC Transport Profiler User Interface Profile Target Profiler ICorProfilerInfo ICorProfilerCallback
- 14. Debugging Application For Debugging CLR HOST IPC Transport Debugger User Interface Profile Target Debugger ICorDebug ICorDebugManagedCallback • Accessing Call Stacks and Variables • Accessing IL Code and Native Code • On-the-Fly Data and Code modifications • Runtime Expressions Evaluation • IL Code Injections • Custom Breakpoints • Step by Step Execution
- 15. Practical Case
- 18. Windows User Mode Driver Framework Virtual Printer Driver CLR Host .NET Data Converter .NET Data Converter .NET Data Converter Native Native Native
- 19. CLR Hosting vs COM Integration Simple Programming Model Fully Managed Good Performance Flexible Programming Model High Reliability Tailored Integration with Native Services Native Programming Environment Low Reliability COM Infrastructure Availability Complex Diagnostics Strange Errors
- 20. THANK YOU