May 2019
Beginner to intermediate
296 pages
6h 58m
Japanese
Content preview from IT用語図鑑 ビジネスで使える厳選キーワード256
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
241
6
I
T
関連用語
用語に関連する話
用語の使用例
カーネル
OSの中核部分
O S の中核にある部 分 で 、C PU やメモリ、ハードウェアなどをソフトウェアが 使うために必
要な基本的な機能を提供するソフトウェアをカーネルと言う。UNIX 系の OS では、利用
者がカーネルに直接アクセスできず、カーネルを取り囲むように表現される「シェル」や
アプリケーションからシステムコールなどを使ってアクセスする。
「カーネルのソースコードを読むとコンピュータの動作がよくわかる。」
システムコール の役割
アプリケーションからハードウェ
アを直接制御することはできず、
よく使う機能を用意したシステ
ムコールを使うことで、開発者の
負担を下げ、移植性を高めている。
プロセスの制御
OSにおいてプログラムを実行す
る単位にプロセスがあり、複数の
プログラムが同時に実行できる
ように、アクセスできるメモリの
範囲を管理している。
カー ネ ル モード
CPUにはユーザーモードとカー
ネルモードがあり、デバイスドラ
イバなどはカーネルモードで動
作するが、一般的なアプリはユー
ザーモードで動作する。
Keyword
216
▶
かーねる
O S とア プリケー ション
……P79
リーナス・トーバルズ
……P279
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.