c_bool
v_waitsetAttach (
v_waitset _this,
v_observable o,
c_voidp userData)
{
c_bool result;
v_proxy proxy;
findProxyArgument arg;
assert(_this != NULL);
assert(C_TYPECHECK(_this,v_waitset));
arg.observable = v_publicHandle(v_public(o));
arg.proxy = NULL;
v_waitsetLock(_this);
c_setWalk(_this->observables, findProxy,&arg);
if (arg.proxy == NULL) { /* no proxy to the observer exists */
proxy = v_proxyNew(v_objectKernel(_this),
arg.observable, userData);
c_insert(_this->observables,proxy);
c_free(proxy);
}
v_waitsetUnlock(_this);
result = v_observableAddObserver(o,v_observer(_this), userData);
/* wakeup blocking threads to evaluate new condition. */
if (v_observerWaitCount(_this)) {
v_waitsetTrigger(_this, NULL);
}
return result;
}
v_result
v_subscriberEnable (
v_subscriber _this)
{
v_kernel kernel;
c_iter list;
c_char *partitionName;
v_result result = V_RESULT_ILL_PARAM;
if (_this) {
kernel = v_objectKernel(_this);
v_observableAddObserver(v_observable(kernel->groupSet),
v_observer(_this), NULL);
if (_this->qos->partition != NULL) {
list = v_partitionPolicySplit(_this->qos->partition);
while((partitionName = c_iterTakeFirst(list)) != NULL) {
v_subscriberSubscribe(_this,partitionName);
os_free(partitionName);
}
c_iterFree(list);
}
result = V_RESULT_OK;
}
return result;
}
void
v_participantInit(
v_participant p,
const c_char *name,
v_participantQos qos,
v_statistics s,
c_bool enable)
{
v_kernel kernel;
c_base base;
v_message builtinMsg;
c_type writerProxyType;
assert(C_TYPECHECK(p,v_participant));
assert(C_TYPECHECK(qos, v_participantQos));
kernel = v_objectKernel(p);
base = c_getBase(p);
v_observerInit(v_observer(p),name,s,enable);
p->entities = c_setNew(c_resolve(base,"kernelModule::v_entity"));
p->qos = c_keep(qos);
/* Currently default LIVELINESS policy is used: kind=AUTOMATIC,
* duration=INFINITE This setting implies no lease registration.
*/
p->lease = NULL;
p->leaseManager = v_leaseManagerNew(kernel);
p->resendQuit = FALSE;
c_mutexInit(&p->resendMutex, SHARED_MUTEX);
c_condInit(&p->resendCond, &p->resendMutex, SHARED_COND);
writerProxyType = v_kernelType(kernel,K_PROXY);
p->resendWriters = c_tableNew(writerProxyType, "source.index,source.serial");
p->builtinSubscriber = NULL;
if (!v_observableAddObserver(v_observable(kernel),v_observer(p), NULL)) {
if (name != NULL) {
OS_REPORT_1(OS_WARNING,"Kernel Participant",0,
"%s: Cannot observe Kernel events",name);
} else {
OS_REPORT(OS_WARNING,"Kernel Participant",0,
"Cannot observe Kernel events");
}
}
c_mutexInit(&p->newGroupListMutex,SHARED_MUTEX);
p->newGroupList = c_listNew(c_resolve(base, "kernelModule::v_group"));
v_observerSetEventMask(v_observer(p), V_EVENT_NEW_GROUP);
c_lockInit(&p->lock,SHARED_LOCK);
c_mutexInit(&p->builtinLock,SHARED_MUTEX);
/* Here the Builtin Topic of the participant is published.
* This call mabe a noop in case builtin is disabled on kernel level.
*/
builtinMsg = v_builtinCreateParticipantInfo(kernel->builtin,p);
v_writeBuiltinTopic(kernel, V_PARTICIPANTINFO_ID, builtinMsg);
c_free(builtinMsg);
}
/**************************************************************
* private functions
**************************************************************/
static void
v_serviceWatchSplicedaemon(
v_service service)
{
v_kernel k;
v_serviceManager m;
v_serviceState splicedState;
k = v_objectKernel(service);
m = v_getServiceManager(k);
splicedState = v_serviceManagerGetServiceState(m, V_SPLICED_NAME);
v_observableAddObserver(v_observable(splicedState), v_observer(service), NULL);
}
static void
cmx_participantInitDetach(
v_public entity,
c_voidp args)
{
v_kernel k;
v_serviceManager m;
v_serviceState splicedState;
OS_UNUSED_ARG(args);
k = v_objectKernel(entity);
m = v_getServiceManager(k);
splicedState = v_serviceManagerGetServiceState(m, V_SPLICED_NAME);
v_observableAddObserver(v_observable(splicedState), v_observer(entity), V_EVENTMASK_ALL, NULL);
}
