bool empty()
{
c_region.enter();
bool res = (active_buffers == 0);
c_region.leave();
return res;
}
int ServiceManager::registerService(waServiceFactory *service, GUID owner) {
ASSERT(owner != INVALID_GUID);
if (owner == INVALID_GUID) return 0;
GUID svctype = GetServiceTypeL(service);
cs.enter();
if (!services.multiHaveItem(svctype, service)) {
services.multiAddItem(svctype, service);
ownermap.addItem(service, owner);
GUID svcguid = service->getGuid();
if (svcguid != INVALID_GUID) services_by_guid.addItem(svcguid, service);
}
cs.leave();
service->serviceNotify(SvcNotify::ONREGISTERED);
#ifdef WASABI_COMPILE_SYSCB
CallbackManager::issueCallback(SysCallback::SERVICE,
SvcCallback::ONREGISTER,
reinterpret_cast<long>(&svctype), reinterpret_cast<long>(service));
#endif
return 1;
}
int ServiceManager::release(void *svcptr) {
if (svcptr == NULL) return 0;
waServiceFactory *wsvc = NULL;
cs.enter(); // note cs getting locked twice via release+unlock
if (!lockmap.getItem(svcptr, &wsvc)) {
cs.leave();
DebugString("WARNING: got release with no lock record!");
return 0;
}
unlock(svcptr);
cs.leave();
ASSERT(wsvc != NULL);
return wsvc->releaseInterface(svcptr);
}
void ServiceManager::sendNotification(int msg, int param1, int param2) {
cs.enter();
for (int x = 0; x < services.multiGetNumPairs(); x++) {
for (int y = 0; ; y++) {
waServiceFactory *svc;
if (!services.multiGetItemDirect(x, y, &svc)) {
break;
}
svc->serviceNotify(msg, param1, param2);
}
}
cs.leave();
#ifdef WASABI_COMPILE_COMPONENTS
// also notify components
for (int i = 0; ; i++) {
WaComponent *wac = ComponentManager::enumComponent(i);
if (wac == NULL) break;
wac->onNotify(WAC_NOTIFY_SERVICE_NOTIFY, msg, param1, param2);
}
#endif
#ifdef WASABI_COMPILE_SYSCB
// and syscallbacks
CallbackManager::issueCallback(SysCallback::RUNLEVEL, msg);
#endif
}
void unlock()
{
#ifdef DEBUG
if (!locked) throw "Already unlocked";
#endif
cs->leave();
locked = false;
}
void pop (_et &element)
{
data_avail.wait();
c_region.enter();
element = elements[first];
first = (first + 1) % element_count;
active_buffers--;
c_region.leave();
free_space.signal();
}
void push(const _et &element)
{
free_space.wait();
c_region.enter();
int next = (last + 1) % element_count;
elements[last] = element;
last = next;
active_buffers++;
c_region.leave();
data_avail.signal();
}
int ServiceManager::unlock(void *svcptr) {
if (svcptr == NULL) return 0;
waServiceFactory *wsvc = NULL;
cs.enter();
if (!lockmap.getItem(svcptr, &wsvc)) {
cs.leave();
DebugString("WARNING: got unlock with no lock record!");
return 0;
}
int r = lockmap.delItem(svcptr);
ASSERT(r);
//CUT // this might fail, client locking isn't enforceable
//CUT clientmap.delItem(svcptr);
cs.leave();
return 1;
}
bool lock(SessionId owner,bool exclusive, unsigned timeout)
{
CTimeMon tm(timeout);
sect.enter();
loop {
unsigned num = owners.ordinality();
if (exclusive) {
if (num==0) {
owners.append(owner);
exclusivenest = 1;
break;
}
else if (exclusivenest && (owners.item(0)==owner)) {
exclusivenest++;
break;
}
}
else if (!exclusivenest) {
owners.append(owner);
break;
}
waiting++;
sect.leave();
unsigned remaining;
if (tm.timedout(&remaining)||!sem.wait(remaining)) {
sect.enter();
if (!sem.wait(0)) {
waiting--;
sect.leave();
return false;
}
}
else
sect.enter();
}
sect.leave();
return true;
}
bool push(const _et &element,long timeout)
{
if (free_space.wait(timeout) ) {
c_region.enter();
int next = (last + 1) % element_count;
elements[last] = element;
last = next;
active_buffers++;
c_region.leave();
data_avail.signal();
return true;
}
return false;
}
void unlock(SessionId owner)
{
sect.enter();
if (exclusivenest) {
exclusivenest--;
if (exclusivenest) { // still locked
assertex(owners.item(0)==owner);
sect.leave();
return;
}
}
verifyex(owners.zap(owner));
if (owners.ordinality()==0) {
exclusivenest = 0;
if (waiting) {
sem.signal(waiting);
waiting = 0;
}
}
else {
assertex(!exclusivenest);
}
sect.leave();
}
int ServiceManager::deregisterService(waServiceFactory *service, int internal) {
GUID svctype = GetServiceTypeL(service);
// make sure it was there
cs.enter();
if (services.multiHaveItem(svctype, service)) {
// make sure there aren't still services issued by this guy
// ASSERT(internal || !lockmap.reverseGetItem(service));
services.multiDelItem(svctype, service);
ownermap.delItem(service);
services_by_guid.reverseDelItem(service);
}
cs.leave();
service->serviceNotify(SvcNotify::ONDEREGISTERED);
#ifdef WASABI_COMPILE_SYSCB
CallbackManager::issueCallback(SysCallback::SERVICE,
SvcCallback::ONDEREGISTER,
reinterpret_cast<long>(&svctype), reinterpret_cast<long>(service));
#endif
return 1;
}
unsigned in_queue() {
c_region.enter();
unsigned res = active_buffers;
c_region.leave();
return res;
}
