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・ Native Forest Action
・ Native Forest Action Council
・ Native Forest Council
・ Native Forest Law
・ Native Friendship Center of Montreal
・ Native Friendship Centre
・ Native fuchsia
・ Native Gap Conservation Reserve
・ Native grape
・ Native ground
・ Native Hawaiian Legal Corporation
・ Native Hawaiians
・ Native headmen of Ceylon
・ Native hydrangea
・ Native ice cream
Native Image Generator
・ Native Indonesians
・ Native Instruments
・ Native Jetty Bridge
・ Native Korean Rock
・ Native Labour (Settlement of Disputes) Act, 1953
・ Native Land
・ Native Land Register
・ Native Language Immersion Student Achievement Act
・ Native Language Music
・ Native laurel
・ Native Laws Amendment Act, 1952
・ Native Location Act of 1879
・ Native Love (Step by Step)
・ Native metal


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Native Image Generator : ウィキペディア英語版
Native Image Generator

The Native Image Generator, or simply NGen is the ahead-of-time compilation service of the .NET Framework. It allows a CLI assembly to be pre-compiled instead of letting the Common Language Runtime (CLR) do a just-in-time compilation at runtime. In some cases the execution will be significantly faster than with JIT.
== General information ==
The Native Image Generator produces a native binary image for the current environment (i.e.; operating systems). This eliminates the JIT overhead at the expense of portability and disk space; whenever an NGen-generated image is run in an incompatible environment, .NET Framework automatically reverts to using JIT. Once NGen is run against an assembly, the resulting native image is placed into the Native Image Cache for use by all other CLI assemblies. This makes it possible, for example, to use NGen to process CLI assemblies at installation time, saving processor time later on, when the end-user invokes the application on their system.
NGen is intended to make the assembly execute faster by removing the JIT compilation process at runtime, but this does not always improve performance because some optimizations can be done only by a JIT compiler (e.g., if the JIT compiler knows that the code is already running with full trust, it can skip certain expensive security checks). Because of this fact, it makes sense to use NGen only after benchmarking the application performance before and after it.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Native Image Generator」の詳細全文を読む



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