c_syncResult
c_condTimedWait (
c_cond *cnd,
c_mutex *mtx,
const c_time time)
{
os_result result;
os_time t;
t.tv_sec = time.seconds;
t.tv_nsec = time.nanoseconds;
#ifdef NDEBUG
result = os_condTimedWait(cnd,mtx,&t);
#else
mtx->owner = OS_THREAD_ID_NONE;
result = os_condTimedWait(cnd,&mtx->mtx,&t);
mtx->owner = os_threadIdSelf();
#endif
#if 1
/* TODO: Remove temporary workaround to prevent spinning
* applications and come up with an actual fix.
*/
wait_on_error(result);
#endif
if((result != os_resultSuccess) && (result != os_resultTimeout)){
OS_REPORT_1(OS_ERROR, "c_condWait", 0, "os_condWait failed; os_result = %d.", result);
assert((result == os_resultSuccess) || (result == os_resultTimeout));
}
return result;
}
/**
* \brief This operation will return whether or not the shared memory is clean.
*
* This operation will block as long as the shared memory monitor is determining
* if terminated processes left resources and if it can remove those leaked
* resources. When unable the shared memory will be unclean.
*
* \param _this The shmMonitor instance.
*
* \return This operation will return TRUE is the shared memory is clean.
* Otherwise it will return FALSE.
*/
c_bool
s_shmMonitorIsClean(s_shmMonitor _this)
{
c_bool result;
os_duration pollDelay = 100*OS_DURATION_MILLISECOND;
os_mutexLock(&_this->mutex);
while ((_this->terminate == OS_FALSE) && (_this->shmState == SHM_STATE_UNKNOWN)) {
(void) os_condTimedWait(&_this->cleanCondition, &_this->mutex, pollDelay);
}
result = (_this->shmState == SHM_STATE_CLEAN) ? TRUE : FALSE;
os_mutexUnlock(&_this->mutex);
return result;
}
os_result
_ObjectTimedWait(
_Object object,
os_cond *cv,
const os_time *timeout)
{
gapi_handle handle;
os_result result;
assert(object);
assert(object->handle);
assert(cv != NULL);
handle = (gapi_handle)object->handle;
assert(handle->magic == MAGIC);
result = os_condTimedWait(cv, &handle->mutex, timeout);
return result;
}
int
s_kernelManagerWaitForActive(
s_kernelManager km)
{
int result;
os_time delay = {1, 0};
os_time cur;
os_time start;
os_result osr;
os_mutexLock(&km->mtx);
osr = os_resultSuccess;
cur = os_timeGet();
start = cur;
while ((km->active < 2) && (cur.tv_sec - start.tv_sec < 20)) {
osr = os_condTimedWait(&km->cv, &km->mtx, &delay);
cur = os_timeGet();
}
result = km->active;
os_mutexUnlock(&km->mtx);
return result;
}
static void
nw_serviceMain(
const char *serviceName,
const char *URI)
{
u_serviceManager serviceManager;
os_time sleepTime;
os_result waitResult;
nw_termination terminate;
os_mutexAttr termMtxAttr;
os_condAttr termCvAttr;
c_bool fatal = FALSE;
v_duration leasePeriod;
terminate.terminate = FALSE;
os_mutexAttrInit( & termMtxAttr );
os_condAttrInit( & termCvAttr );
termMtxAttr.scopeAttr = OS_SCOPE_PRIVATE;
termCvAttr.scopeAttr = OS_SCOPE_PRIVATE;
os_mutexInit( &terminate.mtx, &termMtxAttr );
os_condInit( &terminate.cv, &terminate.mtx, &termCvAttr );
/* Create networking service with kernel */
service = u_serviceNew(URI, NW_ATTACH_TIMEOUT, serviceName, NULL,
U_SERVICE_NETWORKING, NULL);
/* Initialize configuration */
nw_configurationInitialize(service, serviceName, URI);
/* Ask service manager for splicedaemon state */
serviceManager = u_serviceManagerNew(u_participant(service));
/* Create the controller which starts the updating */
/* and calls the listener on a fatal error */
controller = nw_controllerNew(service,controller_onfatal,&fatal);
if (controller) {
os_procAtExit(on_exit_handler);
/* Start the actual engine */
NW_REPORT_INFO(1, "Networking started");
NW_TRACE(Mainloop, 1, "Networking started");
nw_controllerStart(controller);
/* Change state for spliced */
u_serviceChangeState(service, STATE_INITIALISING);
u_serviceChangeState(service, STATE_OPERATIONAL);
/* Get sleeptime from configuration */
nw_retrieveLeaseSettings(&leasePeriod, &sleepTime);
/*sleepTime.tv_sec = 1; */
/* Loop until termination is requested */
u_serviceWatchSpliceDaemon(service, nw_splicedaemonListener,
&terminate);
os_mutexLock( &terminate.mtx );
while ((!(int)terminate.terminate) && (!(int)fatal) && (!(int)f_exit)) {
/* Assert my liveliness and the Splicedaemon's liveliness*/
u_serviceRenewLease(service, leasePeriod);
/* Check if anybody is still remotely interested */
nw_controllerUpdateHeartbeats(controller);
/* Wait before renewing again */
waitResult = os_condTimedWait( &terminate.cv, &terminate.mtx, &sleepTime );
if (waitResult == os_resultFail)
{
OS_REPORT(OS_CRITICAL, "nw_serviceMain", 0,
"os_condTimedWait failed - thread will terminate");
fatal = TRUE;
}
/* QAC EXPECT 2467; Control variable, terminate, not modified inside loop. That is correct, it is modified by another thread */
}
os_mutexUnlock( &terminate.mtx );
/* keep process here waiting for the exit processing */
while ((int)f_exit){os_nanoSleep(sleepTime);}
if (!(int)fatal ) {
leasePeriod.seconds = 20;
leasePeriod.nanoseconds = 0;
u_serviceRenewLease(service, leasePeriod);
u_serviceChangeState(service, STATE_TERMINATING);
nw_controllerStop(controller);
nw_controllerFree(controller);
controller = NULL;
NW_REPORT_INFO(1, "Networking stopped");
NW_TRACE(Mainloop, 1, "Networking stopped");
}
}
if (!(int)fatal ) {
nw_configurationFinalize();
/* Clean up */
u_serviceChangeState(service, STATE_TERMINATED);
u_serviceManagerFree(serviceManager);
u_serviceFree(service);
}
}
static void *lease_renewal_thread (struct nn_servicelease *sl)
{
/* Do not check more often than once every 100ms (no particular
reason why it has to be 100ms), regardless of the lease settings.
Note: can't trust sl->self, may have been scheduled before the
assignment. */
const os_int64 min_progress_check_intv = 100 * T_MILLISECOND;
struct thread_state1 *self = lookup_thread_state ();
nn_mtime_t next_thread_cputime = { 0 };
nn_mtime_t tlast = { 0 };
int was_alive = 1;
unsigned i;
for (i = 0; i < thread_states.nthreads; i++)
{
sl->av_ary[i].alive = 1;
sl->av_ary[i].wd = thread_states.ts[i].watchdog - 1;
}
os_mutexLock (&sl->lock);
while (sl->keepgoing)
{
unsigned n_alive = 0;
nn_mtime_t tnow = now_mt ();
LOG_THREAD_CPUTIME (next_thread_cputime);
TRACE (("servicelease: tnow %"PA_PRId64":", tnow.v));
/* Check progress only if enough time has passed: there is no
guarantee that os_cond_timedwait wont ever return early, and we
do want to avoid spurious warnings. */
if (tnow.v < tlast.v + min_progress_check_intv)
{
n_alive = thread_states.nthreads;
}
else
{
tlast = tnow;
for (i = 0; i < thread_states.nthreads; i++)
{
if (thread_states.ts[i].state != THREAD_STATE_ALIVE)
n_alive++;
else
{
vtime_t vt = thread_states.ts[i].vtime;
vtime_t wd = thread_states.ts[i].watchdog;
int alive = vtime_asleep_p (vt) || vtime_asleep_p (wd) || vtime_gt (wd, sl->av_ary[i].wd);
n_alive += (unsigned) alive;
TRACE ((" %d(%s):%c:%u:%u->%u:", i, thread_states.ts[i].name, alive ? 'a' : 'd', vt, sl->av_ary[i].wd, wd));
sl->av_ary[i].wd = wd;
if (sl->av_ary[i].alive != alive)
{
const char *name = thread_states.ts[i].name;
const char *msg;
if (!alive)
msg = "failed to make progress";
else
msg = "once again made progress";
NN_WARNING2 ("thread %s %s\n", name ? name : "(anon)", msg);
sl->av_ary[i].alive = (char) alive;
}
}
}
}
/* Only renew the lease if all threads are alive, so that one
thread blocking for a while but not too extremely long will
cause warnings for that thread in the log file, but won't cause
the DDSI2 service to be marked as dead. */
if (n_alive == thread_states.nthreads)
{
TRACE ((": [%d] renewing\n", n_alive));
/* FIXME: perhaps it would be nice to control automatic
liveliness updates from here.
FIXME: should terminate failure of renew_cb() */
sl->renew_cb (sl->renew_arg);
was_alive = 1;
}
else
{
TRACE ((": [%d] NOT renewing\n", n_alive));
if (was_alive)
log_stack_traces ();
was_alive = 0;
}
#if SYSDEPS_HAVE_GETRUSAGE
/* If getrusage() is available, use it to log CPU and memory
statistics to the trace. Getrusage() can't fail if the
parameters are valid, and these are by the book. Still we
check. */
if (config.enabled_logcats & LC_TIMING)
{
struct rusage u;
if (getrusage (RUSAGE_SELF, &u) == 0)
{
nn_log (LC_TIMING,
"rusage: utime %d.%06d stime %d.%06d maxrss %ld data %ld vcsw %ld ivcsw %ld\n",
(int) u.ru_utime.tv_sec, (int) u.ru_utime.tv_usec,
(int) u.ru_stime.tv_sec, (int) u.ru_stime.tv_usec,
u.ru_maxrss, u.ru_idrss, u.ru_nvcsw, u.ru_nivcsw);
}
}
#endif
os_condTimedWait (&sl->cond, &sl->lock, sl->sleepTime);
/* We are never active in a way that matters for the garbage
collection of old writers, &c. */
thread_state_asleep (self);
}
os_mutexUnlock (&sl->lock);
return NULL;
}
u_result
u_waitsetWaitAction (
const u_waitset _this,
u_waitsetAction action,
void *arg,
const os_duration timeout)
{
u_result result = U_RESULT_OK;
os_result osr;
c_ulong length;
assert(_this != NULL);
assert(action != NULL);
assert(OS_DURATION_ISPOSITIVE(timeout));
osr = os_mutexLock_s(&_this->mutex);
if (osr == os_resultSuccess) {
if (!_this->alive) {
result = U_RESULT_ALREADY_DELETED;
}
if (result == U_RESULT_OK) {
if (!_this->waitBusy) {
/* Wait for possible detach to complete.
* If you don't do that, it's possible that this wait call sets
* the waitBusy flag before the detach can wake up of its waitBusy
* loop, meaning that the detach will block at least until the
* waitset is triggered again.
*/
while (_this->detachCnt > 0) {
os_condWait(&_this->waitCv, &_this->mutex);
}
_this->waitBusy = TRUE;
length = c_iterLength(_this->entries);
if (length == 1) {
/* Single Domain Mode. */
u_waitsetEntry entry = c_iterObject(_this->entries,0);
os_mutexUnlock(&_this->mutex);
result = u_waitsetEntryWait(entry, action, arg, timeout);
os_mutexLock(&_this->mutex);
_this->waitBusy = FALSE;
os_condBroadcast(&_this->waitCv);
os_mutexUnlock(&_this->mutex);
if ((result == U_RESULT_OK) && (_this->alive == FALSE)) {
result = U_RESULT_ALREADY_DELETED;
}
} else {
/* Multi Domain Mode (or no Domain). */
if (OS_DURATION_ISINFINITE(timeout)) {
os_condWait(&_this->cv, &_this->mutex);
osr = os_resultSuccess;
} else {
osr = os_condTimedWait(&_this->cv, &_this->mutex, timeout);
}
_this->waitBusy = FALSE;
os_condBroadcast(&_this->waitCv);
switch (osr) {
case os_resultSuccess:
if (_this->alive == TRUE) {
result = U_RESULT_OK;
} else {
result = U_RESULT_ALREADY_DELETED;
}
break;
case os_resultTimeout:
result = U_RESULT_TIMEOUT;
break;
default:
result = U_RESULT_INTERNAL_ERROR;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction", result,
"os_condWait failed for waitset 0x" PA_ADDRFMT,
(PA_ADDRCAST)_this);
break;
}
os_mutexUnlock(&_this->mutex);
}
} else {
os_mutexUnlock(&_this->mutex);
result = U_RESULT_PRECONDITION_NOT_MET;
}
} else {
os_mutexUnlock(&_this->mutex);
}
} else {
result = U_RESULT_INTERNAL_ERROR;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction", result,
"os_mutexLock failed for waitset 0x" PA_ADDRFMT,
(PA_ADDRCAST)_this);
}
return result;
}
u_result
u_waitsetWaitAction2 (
const u_waitset _this,
u_waitsetAction2 action,
void *arg,
const os_duration timeout)
{
u_result result = U_RESULT_OK;
os_result osr;
c_ulong length;
struct checkArg a;
a.action = action;
a.arg = arg;
a.count = 0;
assert(_this != NULL);
assert(OS_DURATION_ISPOSITIVE(timeout));
osr = os_mutexLock_s(&_this->mutex);
if (osr == os_resultSuccess) {
if (!_this->alive) {
result = U_RESULT_ALREADY_DELETED;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"Precondition not met: Waitset is already deleted");
}
if (_this->waitBusy) {
result = U_RESULT_PRECONDITION_NOT_MET;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"Precondition not met: A Wait call is already active on this Waitset");
}
if (result == U_RESULT_OK) {
/* Wait for possible detach to complete.
* If you don't do that, it's possible that this wait call sets
* the waitBusy flag before the detach can wake up of its waitBusy
* loop, meaning that the detach will block at least until the
* waitset is triggered again.
*/
while (_this->detachCnt > 0) {
os_condWait(&_this->waitCv, &_this->mutex);
}
length = c_iterLength(_this->entries);
if (length == 1) {
/* Single Domain Mode. */
u_waitsetEntry entry = c_iterObject(_this->entries,0);
_this->waitBusy = TRUE;
os_mutexUnlock(&_this->mutex);
result = u_waitsetEntryWait2(entry, action, arg, timeout);
os_mutexLock(&_this->mutex);
_this->waitBusy = FALSE;
if (_this->notifyDetached) {
result = U_RESULT_DETACHING;
_this->notifyDetached = OS_FALSE;
}
os_condBroadcast(&_this->waitCv);
os_mutexUnlock(&_this->mutex);
if ((result == U_RESULT_OK) && (_this->alive == FALSE)) {
result = U_RESULT_ALREADY_DELETED;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"Precondition not met: Waitset is already deleted");
}
} else {
/* Multi Domain Mode (or no Domain). */
a.count = 0;
/* For each Domain test Conditions. */
(void)c_iterWalkUntil(_this->entries, check_entry_conditions, &a);
/* Test Guard Conditions */
if ((a.count == 0) && (!action(NULL,arg))) {
a.count++;
}
/* If No Conditions are true then wait. */
if (a.count == 0) {
_this->waitBusy = TRUE;
if (OS_DURATION_ISINFINITE(timeout)) {
os_condWait(&_this->cv, &_this->mutex);
osr = os_resultSuccess;
} else {
osr = os_condTimedWait(&_this->cv, &_this->mutex, timeout);
}
_this->waitBusy = FALSE;
os_condBroadcast(&_this->waitCv);
switch (osr) {
case os_resultSuccess:
if (_this->alive == TRUE) {
if (_this->notifyDetached) {
result = U_RESULT_DETACHING;
_this->notifyDetached = OS_FALSE;
} else {
result = U_RESULT_OK;
}
} else {
result = U_RESULT_ALREADY_DELETED;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"Precondition not met: Waitset is already deleted");
}
break;
case os_resultTimeout:
result = U_RESULT_TIMEOUT;
break;
default:
result = U_RESULT_INTERNAL_ERROR;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"os_condWait failed for waitset 0x" PA_ADDRFMT,
(PA_ADDRCAST)_this);
break;
}
}
os_mutexUnlock(&_this->mutex);
}
} else {
os_mutexUnlock(&_this->mutex);
}
} else {
result = U_RESULT_INTERNAL_ERROR;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"os_mutexLock failed for waitset 0x" PA_ADDRFMT,
(PA_ADDRCAST)_this);
}
return result;
}
