作者: 韩晨旭@ArcueidType(Arcueid) 10225101440 李畅@wesley 10225102463 设计文档为PLAN.md,md版本报告为README.md,pdf版本报告为Report.pdf
選択できるのは25トピックまでです。 トピックは、先頭が英数字で、英数字とダッシュ('-')を使用した35文字以内のものにしてください。

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This directory contains interfaces and implementations that isolate the
rest of the package from platform details.

Code in the rest of the package includes "port.h" from this directory.
"port.h" in turn includes a platform specific "port_<platform>.h" file
that provides the platform specific implementation.

See port_posix.h for an example of what must be provided in a platform
specific header file.