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1. ½ø³ÌÊÇʲô?
Ò»¸ö½ø³Ì¾ÍÊdzöÓÚÖ´ÐÐÆڵijÌÐò, °üÀ¨:¿ÉÖ´ÐгÌÐò´úÂë(´úÂë¶Î), ´ò¿ªµÄÎļþ, ¹ÒÆðµÄÐźÅ, ÄÚºËÄÚ²¿Êý¾Ý, ´¦ÀíÆ÷״̬, µØÖ·¿Õ¼ä, Ò»¸ö»ò¶à¸öÖ´ÐÐÏß³Ì, µ±È»»¹°üÀ¨ÓÃÀ´´æ·ÅÈ«¾Ö±äÁ¿µÄÊý¾Ý¶Î, µÈµÈ.
2. ʲôÊÇÏß³Ì?ËüºÍ½ø³ÌµÄ¹ØϵÊÇʲôÑùµÄ? Ïß³ÌÔÚLINUXÖоßÌåÊÇÔõôÑùʵÏÖµÄ?
ÊÇÔÚ½ø³ÌÖлµÄ¶ÔÏó, ¶Ôlinux¶øÑÔ, Ïß³ÌÖ»²»¹ýÊÇÒ»ÖÖÌØÊâµÄ½ø³Ì.
Ïß³ÌÖ®¼ä¿ÉÒÔ¹²ÏíÐéÄâÄÚ´æ, µ«ÓµÓи÷×ÔµÄÐéÄâ´¦ÀíÆ÷.
3. ½ø³ÌÔÚÄÚºËÖеıíʾ.
3.1 ͨ¹ý´óÔ¼1.7K(ÔÚ32λµÄ»úÆ÷ÉÏ)µÄ½ø³ÌÃèÊö·ûtask_structÀ´±íʾ, ËùÓÐÕâЩ½á¹¹Ìå×é³ÉÒ»¸öË«ÏòµÄÑ»·Áбí(±»³ÆΪtask list).
3.2 Õâ¸ötask_struct°üº¬ÁËÄں˹ÜÀíÒ»¸ö½ø³ÌËùÐèµÄËùÓÐÐÅÏ¢.
3.3. ÔÚ2.6ÒÔÇ°µÄÄÚºËÖÐ,¸÷¸ö½ø³ÌµÄtask_struct´æ·ÅÔÚËüÃÇÄÚºËÕ»µÄβ¶Ë; ÏÖÔÚÊÇÓÃslab·ÖÅäÆ÷À´¶¯Ì¬Éú³ÉµÄ, Ö»ÐèÔÚÕ»µ×(¶ÔÓÚÏòÏÂÔö³¤µÄÕ»À´Ëµ)»òÕ»¶¥(¶ÔÓÚÏòÉÏÔö³¤µÄÕ»À´Ëµ)´´½¨Ò»¸öеĽṹstruct_thread_info.
task_struct½á¹¹Ìå:
struct_thread_info½á¹¹Ìå:
3.4 ½ø³ÌÓÐÏÂÃæÕâЩ״̬:
4. ½ø³ÌµÄ´´½¨
5. ½ø³ÌµÄÖÕ½á¹ý³Ì
һЩ´óµÄ¸ÅÄî:
1. UNIX²Ù×÷ϵͳµÄÁ½¸ö»ù±¾³éÏó: ½ø³ÌºÍÎļþ.
2. ÔÚÏÖ´ú²Ù×÷ϵͳÖÐ, ½ø³ÌÌṩÁ½ÖÖÐéÄâ»úÖÆ: ÐéÄâ´¦ÀíÆ÷ºÍÐéÄâÄÚ´æ.
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$ sudo ls
Password:
cuser is not in the sudoers file. This incident will be reported.
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1. Technically speaking, and in this book, the operating
system
is considered the parts of the system responsible for basic use
and administration. This includes the kernel and device drivers, boot loader,
command shell or other user interface, and basic file and system utilities ......
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