我明天要参加考试,
在我们运行一个带有 sttraces 的可执行文件后, 标准 Clib 的结果如下 :
问题在于,为什么第一次对mmap使用PROT-READPROT_EXEC和第二次对PROT_READPROT_WREITE进行轮查。
请详细解释每次闪电后会发生什么。 我不明白为什么一个过程需要修改 libc ( writer access) 。
这些地图是私有的(MAP_PRIVATE ),因此没有任何东西正在修改 libc.so ;相反,它正在修改从libc.so 绘制的私人(进程)页面副本。 这将包括数据段(libc的全球变量)以及全球偏移表(GOT), 以及可能涉及将图书馆迁移到运行时特定地址的其他结构。
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最好、最小、最快、开放的来源、C/C++ 3d 提供方(在3ds max模型的支持下),而不是通用公平市价,
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