void
RPCChannel::DebugAbort(const char* file, int line, const char* cond,
const char* why,
const char* type, bool reply) const
{
printf_stderr("###!!! [RPCChannel][%s][%s:%d] "
"Assertion (%s) failed. %s (triggered by %s%s)\n",
mChild ? "Child" : "Parent",
file, line, cond,
why,
type, reply ? "reply" : "");
// technically we need the mutex for this, but we're dying anyway
DumpRPCStack(" ");
printf_stderr(" remote RPC stack guess: %lu\n",
mRemoteStackDepthGuess);
printf_stderr(" deferred stack size: %lu\n",
mDeferred.size());
printf_stderr(" out-of-turn RPC replies stack size: %lu\n",
mOutOfTurnReplies.size());
printf_stderr(" Pending queue size: %lu, front to back:\n",
mPending.size());
MessageQueue pending = mPending;
while (!pending.empty()) {
printf_stderr(" [ %s%s ]\n",
pending.front().is_rpc() ? "rpc" :
(pending.front().is_sync() ? "sync" : "async"),
pending.front().is_reply() ? "reply" : "");
pending.pop_front();
}
NS_RUNTIMEABORT(why);
}
Uint32 Sum(const MessageQueue& q)
{
Uint32 sum = 0;
for (const Message* m = q.front(); m; m = m->getNext())
{
const Alarm* a = (const Alarm*)m;
sum += a->getKey();
}
return sum;
}
bool
RPCChannel::OnMaybeDequeueOne()
{
// XXX performance tuning knob: could process all or k pending
// messages here
AssertWorkerThread();
mMonitor->AssertNotCurrentThreadOwns();
Message recvd;
{
MonitorAutoLock lock(*mMonitor);
if (!Connected()) {
ReportConnectionError("RPCChannel");
return false;
}
if (!mDeferred.empty())
MaybeUndeferIncall();
MessageQueue *queue = mUrgent.empty()
? mNonUrgentDeferred.empty()
? &mPending
: &mNonUrgentDeferred
: &mUrgent;
if (queue->empty())
return false;
recvd = queue->front();
queue->pop_front();
}
if (IsOnCxxStack() && recvd.is_rpc() && recvd.is_reply()) {
// We probably just received a reply in a nested loop for an
// RPC call sent before entering that loop.
mOutOfTurnReplies[recvd.seqno()] = recvd;
return false;
}
CxxStackFrame f(*this, IN_MESSAGE, &recvd);
if (recvd.is_rpc())
Incall(recvd, 0);
else if (recvd.is_sync())
SyncChannel::OnDispatchMessage(recvd);
else
AsyncChannel::OnDispatchMessage(recvd);
return true;
}
void TestMessageQueue2()
{
MessageQueue q;
Uint32 sum = 0;
for (Uint32 i = 1; i <= 5; i++)
{
q.enqueue(new Alarm(i));
sum += i;
}
assert(sum == 15);
while (!q.isEmpty())
q.remove(q.front());
assert(q.getCount() == 0);
}
void TestMessageQueue1()
{
MessageQueue q;
Uint32 sum = 0;
for (Uint32 i = 1; i <= 5; i++)
{
q.enqueue(new Alarm(i));
sum += i;
}
assert(Sum(q) == sum);
// Test removing from the middle:
Message* m = q.findByKey(3);
assert(m != 0);
q.remove(m);
assert(Sum(q) == sum - 3);
assert(q.getCount() == 4);
// Test removing from the front:
q.remove(q.front());
assert(Sum(q) == sum - 3 - 1);
assert(q.getCount() == 3);
// Test removing from the front:
q.remove(q.back());
assert(Sum(q) == sum - 3 - 1 - 5);
assert(q.getCount() == 2);
// Test dequeue:
m = q.dequeue();
assert(m->getKey() == 2);
assert(Sum(q) == sum - 3 - 1 - 5 - 2);
assert(q.getCount() == 1);
// Test dequeue:
m = q.dequeue();
assert(m->getKey() == 4);
assert(Sum(q) == sum - 3 - 1 - 5 - 2 - 4);
assert(q.getCount() == 0);
}