void basicPollingTest() {
static const int msgCount = 3;
int i = 0;
MSG msg[msgCount];
iop_mbx_t mbxInfo = {};
mbxInfo.option = 0;
mbxInfo.attr = MBA_THFIFO | MBA_MSFIFO;
s32 mbxId = CreateMbx(&mbxInfo);
{
s32 result = PollMbx(NULL, mbxId);
printf(" polling from empty box: %d\n", result);
}
for (i = 0; i < msgCount; i++) {
memset(&msg[i], 0, sizeof(MSG));
msg[i].header.priority = msgCount - i;
msg[i].payload = i + 1;
SendMbx(mbxId, &msg[i]);
}
printf(" box contents before polling: ");
printMbx(mbxId);
{
MSG* msg = NULL;
s32 result = PollMbx((void**)&msg, mbxId);
printf(" polling from non-empty box: %d, message: %d\n",
result, msg->payload);
}
printf(" box contents after polling: ");
printMbx(mbxId);
DeleteMbx(mbxId);
}
int _start(int argc, char **argv) {
printf("-- TEST BEGIN\n");
printf("basic polling:\n");
basicPollingTest();
printf("invalid params:\n");
{
s32 result = PollMbx(NULL, ~0);
printf(" polling message from invalid box: %d\n", result);
//Polling into a null pointer seems to work (returns 0 and message is dequeued)
//but it will probably have dangerous side effects because memory at address 0
//will be modified.
//result = PollMbx(NULL, mbxId);
}
printf("-- TEST END\n");
return 0;
}
static u32_t sys_arch_mbox_fetch_internal(sys_mbox_t pMBox, void** ppvMSG, u32_t TimeElaspedout, char block)
{
void *pmsg;
u32_t TimeElasped = 0;
iop_sys_clock_t ClockTicks;
iop_sys_clock_t Start;
iop_sys_clock_t End;
int result, iPID;
if(block){
iPID=GetThreadId();
if(TimeElaspedout > 0)
{
GetSystemTime(&Start);
USec2SysClock(TimeElaspedout * 1000, &ClockTicks);
SetAlarm(&ClockTicks, &TimeoutHandler, (void*)iPID);
}
if((result=ReceiveMbx(&pmsg, pMBox))!= 0) { return(SYS_ARCH_TIMEOUT); }
if(TimeElaspedout > 0)
{
CancelAlarm(TimeoutHandler,(void*)iPID);
GetSystemTime(&End);
TimeElasped = ComputeTimeDiff(&Start, &End);
}
}
else{
TimeElasped=((result=PollMbx(&pmsg, pMBox))!=0)?SYS_MBOX_EMPTY:0;
}
if(result==0){
*ppvMSG = ((arch_message *)pmsg)->sys_msg;
free_msg((arch_message *) pmsg);
}
//Return the number of msec waited.
return TimeElasped;
}
u32_t
sys_arch_mbox_fetch(sys_mbox_t pMBox,void** ppvMSG,u32_t u32Timeout)
{
void *pmsg;
u32 u32Time = 0;
iop_sys_clock_t ClockTicks;
iop_sys_clock_t Start;
iop_sys_clock_t End;
if(PollMbx(&pmsg, pMBox) != 0)
{
int iPID=GetThreadId();
if(u32Timeout > 0)
{
GetSystemTime(&Start);
USec2SysClock(u32Timeout * 1000, &ClockTicks);
SetAlarm(&ClockTicks, TimeoutHandler, (void*)iPID);
}
if(ReceiveMbx(&pmsg, pMBox) != 0) { return(SYS_ARCH_TIMEOUT); }
if(u32Timeout > 0)
{
CancelAlarm(TimeoutHandler,(void*)iPID);
GetSystemTime(&End);
u32Time = ComputeTimeDiff(&Start,&End);
}
}
if(ppvMSG) { *ppvMSG = ((arch_message *) pmsg)->sys_msg; }
free_msg((arch_message *) pmsg);
//Return the number of msec waited.
return u32Time;
}
