int32_t OSSim::eventResume(Pid_t cpid, Pid_t pid)
{
LOG("OSSim::resume(%d,%d)", cpid, pid);
ProcessId *proc = ProcessId::getProcessId(pid);
if( proc == 0 ) {
LOG("OSSim::resume(%d,%d) non existing process???", cpid, pid);
return 0;
}
// Decrement the suspend counter
proc->decSuspendedCounter();
// If process is in SuspendedState
if(proc->getState()==SuspendedState) {
// If the suspend count is not positive
if(proc->getSuspendedCounter()<=0) {
// Make the process runnable
proc->setState(InvalidState);
cpus.makeRunnable(proc);
}
return 1;
} else {
I(0);
LOG("OSSim::resume(%d,%d) OOO suspend/resume (%d)", cpid, pid, proc->getSuspendedCounter());
}
return 0;
}
int32_t OSSim::eventSuspend(Pid_t cpid, Pid_t pid)
{
LOG("OSSim::suspend(%d) Received from pid %d",pid,cpid);
ProcessId *proc = ProcessId::getProcessId(pid);
if( proc == 0 ) {
LOG("OSSim::suspend(%d) non existing process???", pid);
return 0;
}
// Increment the suspend counter
proc->incSuspendedCounter();
// Check if process already suspended
if(proc->getState()==SuspendedState) {
I(0);
LOG("OSSim::suspend(%d) already suspended (recursive=%d)"
, pid, proc->getSuspendedCounter());
return 0;
}
// The process should be ready or running
I((proc->getState()==ReadyState)||(proc->getState()==RunningState));
// Need to suspend only if suspended counter is positive
if(proc->getSuspendedCounter()>0) {
// The process is no longer runnable
cpus.makeNonRunnable(proc);
// Set the state to SuspendedState
proc->setState(SuspendedState);
} else {
I(0);
LOG("OSSim::suspend(%d,%d) OOO suspend/resume (%d)", cpid, pid, proc->getSuspendedCounter());
}
return 1;
}
