发生死锁的资源分配图 RI R3 PI P3 958 R2 R4 Resource-allocation graph ith a deadlock k 嵌入式系统实验室 EMBEDDED SYSTEM LAB口RAT口RY SU:MDU INTHUTE OR AOVANCLD STUOY D USTt发生死锁的资源分配图 R4 R3 R2 R1 P1 P2 Resource-allocation graph with a deadlock P3