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1、进程状态转换(1/10)PCBofprocessAPCBofprocessBCPUstatereadystatereadyAXxxAX0AX10ZUCCPCA0PC操作系统原理B0PCxxMemoryusedbyAMemoryusedbyB�A0:movAX,a�B0:movAX,8A1:incAXB1:movb,AXA2:mova,AXa2b99a++a++bb==88chap31PDF文件使用"pdfFactoryPro"试用版本创建www.fineprint.cn进程状态转换(2/10)PCBofprocessAPCBofproces
2、sBCPUstaterunning5statereadyAX0AX0AX107ZUCCPCA0PC操作系统原理B0PCA0MemoryusedbyAMemoryusedbyB�A0:movAX,a�B0:movAX,8A1:incAXB1:movb,AXA2:mova,AXa2b99CPU分派给ProcessA.A的PCB块中的进程状态信息复制到CPU。Achap32PDF文件使用"pdfFactoryPro"试用版本创建www.fineprint.cn进程状态转换(3/10)PCBofprocessAPCBofprocessBCPUsta
3、terunningstatereadyAX2AX0AX10ZUCCPCA0PC操作系统原理B0PCA1MemoryusedbyAMemoryusedbyBA0:movAX,a�B0:movAX,8�A1:incAXB1:movb,AXA2:mova,AXa2b99A0执行后……A0执行后……chap33PDF文件使用"pdfFactoryPro"试用版本创建www.fineprint.cn进程状态转换(4/10)PCBofprocessAPCBofprocessBCPUstaterunningstatereadyAX3AX0AX10ZUCC
4、PCA0PC操作系统原理B0PCA2MemoryusedbyAMemoryusedbyBA0:movAX,a�B0:movAX,8A1:incAXB1:movb,AX�A2:mova,AXa2b99A1执行后……A1执行后……chap34PDF文件使用"pdfFactoryPro"试用版本创建www.fineprint.cn进程状态转换(5/10)PCBofprocessAPCBofprocessBCPUstateready1statereadyAX3AX3AX10ZUCCPCA22PCB0操作系统原理PCA23MemoryusedbyAM
5、emoryusedbyB4A0:movAX,a�B0:movAX,8A1:incAXB1:movb,AX�A2:mova,AXa2b99时间到，ProcessA从运行态转到就绪态。A的PCB块被更新，进程状AA态信息从CPU复制到A的PCB块中。Achap35PDF文件使用"pdfFactoryPro"试用版本创建www.fineprint.cn进程状态转换(6/10)PCBofprocessAPCBofprocessBCPUstatereadystaterunning5AX10AX3AX107ZUCCPCA2PC操作系统原理B0PCB0M
6、emoryusedbyAMemoryusedbyBA0:movAX,a�B0:movAX,8A1:incAXB1:movb,AX�A2:mova,AXa2b99CPU分派给ProcessBB.chap36PDF文件使用"pdfFactoryPro"试用版本创建www.fineprint.cn进程状态转换(7/10)PCBofprocessAPCBofprocessBCPUstatereadystaterunningAX8AX3AX10ZUCCPCA2PC操作系统原理B0PCB2MemoryusedbyAMemoryusedbyBA0:mov
7、AX,aB0:movAX,8A1:incAXB1:movb,AX�A2:mova,AX�a2b8执行B0和B1后……执行B0和B1后……chap37PDF文件使用"pdfFactoryPro"试用版本创建www.fineprint.cn进程状态转换(8/10)PCBofprocessAPCBofprocessBCPUstatereadystateready1AX8AX3AX8ZUCCPCA2PC操作系统原理B22PCB23MemoryusedbyAMemoryusedbyB4A0:movAX,aB0:movAX,8A1:incAXB1:mo
8、vb,AX�A2:mova,AX�a2b8ProcessBB时间到,,从运行态转到就绪态..BB的PCB块被更新，进程状态信息从CPU复制到B的PCB块中。Bchap38PDF文
