Error
IOS_DestroySempahore(SemaphoreId id)
{
auto semaphore = getSemaphore(id);
if (!semaphore) {
return Error::Invalid;
}
semaphore->count = 0;
semaphore->maxCount = 0;
// Add semaphore to the free semaphore linked list.
auto index = static_cast<int16_t>(semaphore - phys_addrof(sData->semaphores));
auto prevSemaphoreIndex = sData->lastFreeSemaphoreIndex;
if (prevSemaphoreIndex >= 0) {
auto prevSemaphore = phys_addrof(sData->semaphores[sData->lastFreeSemaphoreIndex]);
prevSemaphore->nextFreeSemaphoreIndex = index;
}
semaphore->prevFreeSemaphoreIndex = prevSemaphoreIndex;
semaphore->nextFreeSemaphoreIndex = int16_t { -1 };
sData->lastFreeSemaphoreIndex = index;
if (sData->firstFreeSemaphoreIndex < 0) {
sData->firstFreeSemaphoreIndex = index;
}
internal::wakeupAllThreads(phys_addrof(semaphore->waitThreadQueue),
Error::Intr);
internal::reschedule();
return Error::Invalid;
}
Error
IOS_WaitSemaphore(SemaphoreId id,
BOOL tryWait)
{
auto semaphore = getSemaphore(id);
if (!semaphore) {
return Error::Invalid;
}
if (semaphore->count <= 0 && tryWait) {
return Error::SemUnavailable;
}
while (semaphore->count <= 0) {
internal::sleepThread(phys_addrof(semaphore->waitThreadQueue));
internal::reschedule();
auto thread = internal::getCurrentThread();
if (thread->context.queueWaitResult != Error::OK) {
return thread->context.queueWaitResult;
}
}
semaphore->count -= 1;
return Error::OK;
}
bool
SharedMem::attach()
{
#if !ENABLE_SHARED_MEM
# error "You need SYSV Shared memory support to use this option"
#endif
// Don't try to attach twice.
if (_addr) return true;
_shmkey = rcfile.getLCShmKey();
// Check rcfile for key; if there isn't one, use the Adobe key.
if (_shmkey == 0) {
log_debug("No shared memory key specified in rcfile. Using default for communication with other players");
_shmkey = 0xdd3adabd;
}
log_debug("Using shared memory key %s",
boost::io::group(std::hex, std::showbase, _shmkey));
if (!getSemaphore()) {
return false;
}
// Note that at this point semval is of indeterminate value: for the
// process that created the semaphore, the value is 1, but for another
// process the value would depend on whether there is an existing lock.
Lock lock(*this);
// Then attach shared memory. See if it exists.
_shmid = ::shmget(_shmkey, _size, 0600);
// If not create it.
if (_shmid < 0) {
_shmid = ::shmget(_shmkey, _size, IPC_CREAT | 0660);
}
if (_shmid < 0) {
log_error(_("Unable to get shared memory segment!"));
return false;
}
_addr = static_cast<iterator>(::shmat(_shmid, nullptr, 0));
if (!_addr) {
log_error(_("Unable to attach shared memory: %s"),
std::strerror(errno));
return false;
}
assert(_addr);
return true;
}
void consume(int *memAddr, int semID)
{
while(1) {
getSemaphore(semID);
if(memAddr[FILLINDEX] > 0) {
getNumber(memAddr);
}
releaseSemaphore(semID);
sleep(1);
}
}
void produce(int *memoryAddr, int semID)
{
while(1) {
getSemaphore(semID);
if(memoryAddr[FILLINDEX] < ARRAYSIZE) {
putNumber(memoryAddr);
}
releaseSemaphore(semID);
sleep(1);
}
}
Error
IOS_SignalSempahore(SemaphoreId id)
{
auto semaphore = getSemaphore(id);
if (!semaphore) {
return Error::Invalid;
}
if (semaphore->count < semaphore->maxCount) {
semaphore->count += 1;
}
internal::wakeupOneThread(phys_addrof(semaphore->waitThreadQueue), Error::OK);
internal::reschedule();
return Error::OK;
}
void initIPC() {
if (data == NULL) getSharedMemory(DIRECTORY_NUMERADOR_CLIENTES, ID_NUMERADOR_CLIENTES);
if (semaphoreId == 0) getSemaphore(DIRECTORY_NUMERADOR_CLIENTES, ID_NUMERADOR_CLIENTES, 1);
}
int sched::sched_sleep(int sleeptime)
{
// Timers:
timeval currTime;
timeval sleepStartTime;
int prevTimeSlept = 0;
int currTimeSlept = 0;
// Figure out how long to sleep:
//int time2sleep = sleeptime;
/*if( sleeptime != -1 )
{
time2sleep = sleeptime - timeSlept;
}*/
prevTimeSlept = timeSlept;
myLogger.lw(SPAM,"SLEEP: Taking a nap for sleeptime: %d - timeslept: %d = %d seconds. Play = %d.", sleeptime, timeSlept, sleeptime - timeSlept, (int) play );
// Get time:
gettimeofday(&currTime, NULL);
sleepStartTime = currTime;
do
{
// Checking for signal:
if(*stop)
return -1;
myLogger.lw(SPAM,"SLEEP: Play = %d, Sleeping for %d more seconds.", (int) play, sleeptime - timeSlept );
// Kick pdog:
//myLogger.lw(SPAM,"SLEEP: Kicking pdog.");
if ((setSemaphore(semid,SCHED_KICK_SEM,1)) == -1)
{
myLogger.lw(ERROR,"SLEEP: Unable to set semaphore!");
if ((semid = getSemaphoreID(KICK_PATH,NUM_KICK)) == -1)
{
myLogger.lw(ERROR,"SLEEP: Unable to grab semaphores (%s)", KICK_PATH);
}
}
// Sleep:
usleep(1000000);
// See if we are in pause or play mode:
play = (bool) getSemaphore(sched_semid,1);
setGV(playFname, (int) play);
// Calculate amount of time slept so far if we are not paused:
if( play )
{
// Get the current time:
gettimeofday(&currTime, NULL);
currTimeSlept = (currTime.tv_sec - sleepStartTime.tv_sec);
timeSlept = prevTimeSlept + currTimeSlept;
setGV(timeSleptFname, timeSlept);
setSemaphore(sched_semid,4,timeSlept);
}
else
{
// Store previous time:
prevTimeSlept = timeSlept;
// Reset the sleep start time until we are in play mode again:
gettimeofday(&sleepStartTime, NULL);
}
} while( (timeSlept < sleeptime) || (sleeptime == -1) || !play );
// Reset time slept to zero:
timeSlept = 0;
setGV(timeSleptFname, timeSlept);
return 0;
}
void CommandWrapper::execute(message* msg)
{
// Lets prevent seggies...
msg->rsp.length = 0;
// Subsystem or Process??
if(msg->cmd.proc >= TOT_PROC) // Subsystem Block
{
msg->err = 0;
msg->qid = myqid; // make sure the message come back to by queue
msg->mtype = mytid; // unique message type for each process / thread
if(msg->cmd.type == STATUS || msg->cmd.type == GET || msg->cmd.type == SET || msg->cmd.type == DATA)
{
// cout << msg->toString() << endl;
if( msgQueueWrapper.msgQueueSend(ssmqid, msg) == -1 )
{
msg->rsp.ret = ERR_MSGQ_SEND;
return;
}
if( msgQueueWrapper.msgQueueReceive(myqid, msg->mtype, msg) == -1 )
{
msg->rsp.ret = ERR_MSGQ_RECV;
return;
}
// cout << msg->toString() << endl;
}
else if(msg->cmd.type == STOP || msg->cmd.type == START) // Run start/stop script
{
char action[1024];
// Read in config file:
configmap myConfig;
myConfig.readfile("/home/conf/commandlist.xml");
// Form action string:
sprintf(action,"cmd_%d_%d",(unsigned int)msg->cmd.proc,(unsigned int)msg->cmd.type);
// Execute action string in config file:
msg->rsp.ret = system(myConfig[action].c_str())/256;
// Is error?
if(msg->rsp.ret >= 0xF0)
msg->rsp.ret = msg->rsp.ret | 0xFFFFFF00;
}
else if(msg->cmd.type == SHUTDOWN)
{
system("/home/scripts/rctest.sh; shutdown -P now"); // disable code from starting up again next boot.. and shutdown
}
else
{
msg->rsp.ret = ERR_INV_CMD_NAME;
}
}
else // Process Block
{
// Cmd Line or Sem Execute??
if(msg->cmd.type == STOP || msg->cmd.type == START || msg->cmd.type == STATUS)
{
char action[1024];
// Read in config file:
configmap myConfig;
myConfig.readfile("/home/conf/commandlist.xml");
// Check process number:
if(msg->cmd.proc >= TOT_PROC)
{
msg->rsp.ret = ERR_INV_PROC_NAME;
return;
}
// Form action string:
sprintf(action,"cmd_%d_%d",(unsigned int)msg->cmd.proc,(unsigned int)msg->cmd.type);
// Execute action string in config file:
msg->rsp.ret = system(myConfig[action].c_str())/256;
// Is error?
if(msg->rsp.ret >= 0xF0)
msg->rsp.ret = msg->rsp.ret | 0xFFFFFF00;
}
else if(msg->cmd.type == GET || msg->cmd.type == SET)
{
int semid;
const char* path;
int num_of_sem;
int ret;
// Get SEMID Vars:
switch(msg->cmd.proc)
{
case ALL:
msg->rsp.ret = ERR_CMD_DNE;
return;
case STPRO:
num_of_sem = NUM_STPRO;
path = STPRO_PATH;
break;
case STCH:
num_of_sem = NUM_STCH;
path = STCH_PATH;
break;
case HSKPR:
num_of_sem = NUM_HSKPR;
path = HSKPR_PATH;
break;
case PDOG:
num_of_sem = NUM_PDOG;
path = PDOG_PATH;
break;
case DCOL:
num_of_sem = NUM_DCOL;
path = DCOL_PATH;
break;
case STIMG:
num_of_sem = NUM_STIMG;
path = STIMG_PATH;
break;
case SCHED:
num_of_sem = NUM_SCHED;
path = SCHED_PATH;
break;
default:
msg->rsp.ret = ERR_INV_PROC_NAME;
return;
}
// Get SEMID:
if( (semid = initSemaphores(path,num_of_sem)) == -1 )
{
msg->rsp.ret = ERR_SEM_INIT;
return;
}
// Check sem #:
if( msg->cmd.arg1 >= num_of_sem )
{
msg->rsp.ret = ERR_SEM_DNE;
return;
}
if( msg->cmd.type == GET )
{
if( (ret = getSemaphore(semid, msg->cmd.arg1)) <= -1 )
{
msg->rsp.ret = ERR_SEM_GET;
return;
}
msg->rsp.ret = ret;
}
else
{
// Send command:
if( setSemaphore(semid, msg->cmd.arg1, msg->cmd.arg2) <= -1 )
{
msg->rsp.ret = ERR_SEM_SET;
return;
}
else
{
// Increment command count:
int cmd_cnt;
if( ( cmd_cnt = getSemaphore(semid, 0) ) <= -1 )
{
msg->rsp.ret = ERR_SEM_GET;
return;
}
if( setSemaphore(semid, 0, cmd_cnt + 1) <= -1 )
{
msg->rsp.ret = ERR_SEM_SET;
return;
}
msg->rsp.ret = 1;
}
}
}
else
{
msg->rsp.ret = ERR_INV_CMD_NAME;
return;
}
}
}
void initIPC() {
if (data == NULL) getSharedMemory(DIRECTORY_NUM, ID_SHMEM_NUMERADOR);
if (semaphoreId == 0) getSemaphore(DIRECTORY_NUM, ID_SEMCONTROL_NUMERADOR, 1);
}