Computers as Components, 2nd Edition

320 CHAPTER 6 Processes and Operating Systems

/* processes[] is an array of process activation records,

stored in order of priority, with processes[0] being

the highest-priority process */

Activation_record processes[NPROCESSES];

void RMA(int current) { /* current ⫽ currently executing

process */

int i;

/* turn off current process (may be turned back on) */

processes[current].state ⫽ READY_STATE;

/* find process to start executing */

for (i ⫽ 0; i < NPROCESSES; i⫹⫹)

if (processes[i].state ⫽⫽ READY_STATE) {

/* make this the running process */

processes[i].state ⫽⫽ EXECUTING_STATE;

break;

}

}

FIGURE 6.12

C code for rate-monotonic scheduling.

6.3.2 ...