{"id":18887103,"url":"https://github.com/punchdrunkard/-3-1-operating-systems","last_synced_at":"2026-02-24T03:30:19.715Z","repository":{"id":148717347,"uuid":"373735619","full_name":"punchdrunkard/-3-1-Operating-Systems","owner":"punchdrunkard","description":"운영체제 과제","archived":false,"fork":false,"pushed_at":"2021-07-05T06:57:14.000Z","size":288,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2024-12-31T05:18:56.293Z","etag":null,"topics":["operating-system"],"latest_commit_sha":null,"homepage":"","language":"C","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/punchdrunkard.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2021-06-04T05:55:41.000Z","updated_at":"2022-11-21T15:47:25.000Z","dependencies_parsed_at":null,"dependency_job_id":"f482f32f-f57c-46a5-82b6-c80f9793ca1a","html_url":"https://github.com/punchdrunkard/-3-1-Operating-Systems","commit_stats":null,"previous_names":["punchdrunkard/-3-1-operating-systems"],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/punchdrunkard%2F-3-1-Operating-Systems","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/punchdrunkard%2F-3-1-Operating-Systems/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/punchdrunkard%2F-3-1-Operating-Systems/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/punchdrunkard%2F-3-1-Operating-Systems/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/punchdrunkard","download_url":"https://codeload.github.com/punchdrunkard/-3-1-Operating-Systems/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":239859563,"owners_count":19708863,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["operating-system"],"created_at":"2024-11-08T07:34:09.629Z","updated_at":"2026-02-24T03:30:19.673Z","avatar_url":"https://github.com/punchdrunkard.png","language":"C","funding_links":[],"categories":[],"sub_categories":[],"readme":"# -3-1-Operating-Systems\n\n3-1에 수강한 \"운영체제\"과목의 과제를 모아둔 공간입니다.\nxv6을 이용하여 프로젝트를 진행하였습니다.\n\n0. Install xv6 \n- xv6을 설치하고, xv6의 개념에 대해서 알아보았습니다.\n- xv6의 boot message의 본인의 학번과 이름을 출력해봄으로써, xv6이 booting 될 때, 제일 먼저 시작되는 프로그램이 뭔지 알아보았습니다.\n2. System Call\n- System Call의 개념을 알고, 직접 시스템콜을 구현할 수 있었다.\n- System Call이 호출되었을 때, 내부적으로 어떤 일이 일어나는지 이해할 수 있었다.\n3. Stack Growth\n- pagefault handler를 구현하였다. \n- rc2()를 호출해 page fault가 발생한 virtulal address를 결정하고, virtual address가 valid한 값인지 확인한다.\n4. Copy-on-Write\n- child process를 fork하게 되면 같은 메모리 공간을 공유하게 되는데, parent process가 데이터를 새로 넣거나 수정하거나 지우게 되면 같은 메모리 공간을 공유할 수 없게 되므로, parent process는 해당 page를 복사한 다음 수정한다. 이것이 바로 Copy-on-write 과정이다.\n- \n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpunchdrunkard%2F-3-1-operating-systems","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fpunchdrunkard%2F-3-1-operating-systems","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpunchdrunkard%2F-3-1-operating-systems/lists"}