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2016-03-01 19:39:51 0 举报graphic summary of <operating system with JAVA> written by SILBERSCHATZ, GALVIN & GAGNE chapter 4,5 & 6.
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progam A
signals
heap
2.one to one model
code
memory that is dynamically allocated suring process run time
process 1
stack
kernel thread
user thread
progam B
data
lightweight process[LWP]
program counter
current activity
registerset
comprise
process2
data section
open files
text scetion
when executablefile is loadedinto memory
shared rescources
1.many to one model
process 3
supported by operating system
4.two level model
thread 2
3.many to many model
Program counter
thread ID
thread 1[basic unit of CPU]
virtual processers
=a program in execution
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