// KplTimeCallbackServiceUntil is called from the KplThreadRunloopCycle() function to call timer callbacks that are due
void KplTimeCallbackServiceUntil(void *param, KplTime until)
{
KplTimeCallback cb;
KplThread thread = (KplThread)param;
cb = (KplTimeCallback)thread->timerCallbacks;
if (NULL == cb)
return;
// mark all those that are due
while (cb) {
if (FskTimeCompare((FskTime)until, (FskTime)&cb->trigger) >= 0)
break;
cb->marked = true;
cb = cb->next;
}
// Remove and call any timer callbacks that are due
while (1) {
cb = (KplTimeCallback)FskListGetNext(thread->timerCallbacks, NULL);
if (!cb)
break;
if (!cb->marked)
break;
FskListRemove(&thread->timerCallbacks, cb);
(*cb->callbackProc)(cb, &cb->trigger, cb->param);
}
if (thread->timerCallbacks)
rescheduleTimer(thread);
}
static void drawingPumpUpdate(FskWindow win)
{
FskTimeRecord delta, now;
FskTimeGetNow(&now);
gKplScreen->unlocked = false;
FskTimeCopy(&delta, &now);
FskTimeSub(&gKplScreen->lastUpdateTime, &delta);
FskTimeCopy(&gKplScreen->lastUpdateTime, &now);
MLOG("[%s] called %d ms after last update\n", threadName, FskTimeInMS(&delta));
// estimate next flip time by adding vSync interval to previous flip time
FskTimeCopy(&gKplScreen->nextFlipTime, &gKplScreen->lastFlipTime);
FskTimeAdd(&gKplScreen->vSyncIntervalTime, &gKplScreen->nextFlipTime);
while (FskTimeCompare(&gKplScreen->nextFlipTime, &now) > 0)
FskTimeAdd(&gKplScreen->vSyncIntervalTime, &gKplScreen->nextFlipTime);
MLOG("Next flip time %ld.%06ld \n", gKplScreen->nextFlipTime.seconds, gKplScreen->nextFlipTime.useconds);
FskWindowCheckEventQueue(win);
FskWindowUpdate(win, &gKplScreen->nextFlipTime);
if (!gKplScreen->unlocked)
FskSemaphoreRelease(gKplScreen->flipSemaphore);
MLOG("[%s] Finished callback %ld, nextFlipTime %1d.%03d\n", threadName, gKplScreen->callbackFiredCount, gKplScreen->nextFlipTime.seconds, gKplScreen->nextFlipTime.useconds / 1000);
}
FskErr FskUUIDCreate(FskUUID uuid)
{
FskTimeRecord time;
static UInt32 clockSequence = 0;
static FskTimeRecord lastTime;
char MAC[6];
FskNetInterfaceRecord *netInterface = NULL;
UInt32 numInterfaces;
// find a suitable network interface to get the MAC address from
numInterfaces = FskNetInterfaceEnumerate();
while (numInterfaces--) {
FskNetInterfaceDescribe(numInterfaces, &netInterface);
if ((0 == netInterface->MAC[0]) && (0 == netInterface->MAC[1]) && (0 == netInterface->MAC[2]) &&
(0 == netInterface->MAC[3]) && (0 == netInterface->MAC[4]) && (0 == netInterface->MAC[5])) {
FskNetInterfaceDescriptionDispose(netInterface);
netInterface = NULL;
continue;
}
break;
}
if (NULL == netInterface) {
// can't fail - clients need a value. make something up. (this happens if all network interfaces are disabled on a phone)
int i;
for (i = 0; i < 6; i++)
MAC[i] = (char)FskRandom();
}
else {
FskMemMove(MAC, netInterface->MAC, sizeof(netInterface->MAC));
FskNetInterfaceDescriptionDispose(netInterface);
}
// make sure the clock sequence is good
while (0 == clockSequence)
clockSequence = FskRandom();
// we need the time, and make sure it is unique.
FskTimeGetNow(&time); //@@ should be UTC time
time.useconds = (time.useconds >> 4) | (time.seconds << 28); // only uses 60 bits of time
time.seconds >>= 4; // only uses 60 bits of time
if (FskTimeCompare(&time, &lastTime) <= 0)
clockSequence += 1;
lastTime = time;
// put the pieces together
time.useconds = FskEndianU32_NtoB(time.useconds);
FskMemCopy(&uuid->value[0], &time.useconds, sizeof(time.useconds));
uuid->value[4] = (UInt8)time.seconds;
uuid->value[5] = (UInt8)(time.seconds >> 8);
uuid->value[6] = (((UInt8)(time.seconds >> 24)) & 0x0f) | 1;
uuid->value[7] = (UInt8)(time.seconds >> 16);
uuid->value[8] = ((UInt8)(clockSequence >> 8) & 0x3f) | 0x80;
uuid->value[9] = (UInt8)clockSequence;
FskMemCopy(&uuid->value[10], MAC, sizeof(MAC));
return kFskErrNone;
}
// Insert this timer callback into the owning thread's "timerCallbacks" queue.
void sInsertInTime(KplTimeCallback el)
{
KplTimeCallback cur, last = NULL;
Boolean reschedule = false;
KplTimeRecord now;
KplThread thread;
thread = (KplThread)el->owner;
KplTimeGetNow(&now);
if (1 == FskTimeCompare((FskTime)&el->trigger, (FskTime)&now))
el->trigger = now;
cur = (KplTimeCallback)FskListGetNext(thread->timerCallbacks, NULL);
el->next = NULL;
el->marked = false;
if (cur == NULL) {
FskListPrepend(&thread->timerCallbacks, el);
reschedule = true;
goto done;
}
while (cur) {
if (FskTimeCompare((FskTime)&el->trigger, (FskTime)&cur->trigger) > 0) {
if (last == NULL) {
reschedule = true;
}
FskListInsertAfter(&thread->timerCallbacks, el, last);
goto done;
}
last = cur;
cur = cur->next;
}
if (!cur && last) {
FskListAppend(&thread->timerCallbacks, el);
}
done:
if (reschedule)
rescheduleTimer(thread);
}
static KprMQTTMessage KprMQTTQueueNextMessageToResend(KprMQTTQueue self)
{
KprMQTTMessage first, message;
message = first = self->outbox;
while (message) {
if (message != first && FskTimeCompare(&message->nextTime, &first->nextTime) > 0) {
first = message;
}
message = message->next;
}
return first;
}
Boolean KplTimeCallbackGetNextTime(const KplTime now, KplTime whenNext, void *threadIn)
{
KplThread thread = threadIn ? threadIn : KplThreadGetCurrent();
if (thread->timerCallbacks) {
KplTimeCallback cb = (KplTimeCallback)thread->timerCallbacks;
if (FskTimeCompare((FskTime)now, (FskTime)&cb->trigger) < 1) {
FskTimeClear((FskTime)whenNext);
return false;
}
*whenNext = cb->trigger;
}
else {
*whenNext = *now;
FskTimeAddSecs((FskTime)whenNext, 3600 * 12); // a long time from now
}
return true;
}
static void fxDoConnect(txMachine *the)
{
if (!FskStrLen(debugAddress)) {
char *address = FskEnvironmentGet("debugger");
if (address)
FskStrCopy(debugAddress, address);
#if TARGET_OS_WIN32 || (TARGET_OS_MAC && !TARGET_OS_IPHONE)
else
FskStrCopy(debugAddress, "localhost");
#endif
}
if (FskStrLen(debugAddress) && !debugAddressFailed) {
FskErr err;
char host[64];
char* colon;
int port;
FskTimeRecord expireTime, now;
SInt32 waitMS;
colon = FskStrNCopyUntil(host, debugAddress, 63, ':');
if (*colon)
port = FskStrToNum(colon);
else
port = 5002;
#if TARGET_OS_MAC
waitMS = 0;
#else
waitMS = -1;
#endif
// Connect to the host asynchronously
err = FskNetConnectToHostPrioritized(host, port, false, fxConnectComplete, the, 0, 0, NULL, "fxConnect");
if (err) goto bail;
// Allow two seconds for the connection to resolve and for the socket to become readable and writable
FskTimeGetNow(&expireTime);
FskTimeAddSecs(&expireTime, 2);
while (!the->connection) {
FskTimeGetNow(&now);
if (FskTimeCompare(&expireTime, &now) > 0)
goto bail;
FskThreadRunloopCycle(waitMS);
}
while (!FskNetSocketIsReadable((FskSocket)the->connection) && !FskNetSocketIsWritable((FskSocket)the->connection)) {
FskTimeGetNow(&now);
if (FskTimeCompare(&expireTime, &now) > 0)
goto bail;
FskThreadRunloopCycle(waitMS);
}
// Make the socket blocking
FskNetSocketMakeBlocking((FskSocket)the->connection);
return;
bail:
if (the->connection) {
FskNetSocketClose((FskSocket)the->connection);
the->connection = 0;
}
debugAddressFailed = true;
}
}
void KprHTTPClientIterate()
{
KprHTTPClient self = gKprHTTPClient;
KprHTTPConnection connection, candidate, available;
KprHTTPTarget target, next, other;
KprMessage message;
for (connection = FskListGetNext(self->connections, NULL); connection; connection = FskListGetNext(self->connections, connection)) {
target = connection->target;
if (target) {
message = connection->target->message;
if (!KprMessageContinue(message)) {
KprHTTPConnectionClose(connection);
KprHTTPClientResumeTarget(target);
}
}
}
target = FskListGetNext(self->targets, NULL);
while (target) {
next = FskListGetNext(self->targets, target);
message = target->message;
if (!KprMessageContinue(message)) {
FskListRemove(&self->targets, target);
KprHTTPClientResumeTarget(target);
}
target = next;
}
target = FskListGetNext(self->targets, NULL);
while (target) {
next = FskListGetNext(self->targets, target);
message = target->message;
candidate = NULL;
available = NULL;
for (connection = FskListGetNext(self->connections, NULL); connection; connection = FskListGetNext(self->connections, connection)) {
if (KprHTTPConnectionCandidate(connection, message)) {
candidate = connection;
break;
}
else if (KprHTTPConnectionAvailable(connection)) {
if (!available || (FskTimeCompare(&connection->time, &available->time) > 0)) // make the older connection the candidate for re-use
available = connection;
}
}
if (candidate) {
if (KprHTTPConnectionAvailable(candidate)) {
FskInstrumentedItemSendMessageDebug(candidate, kprInstrumentedHTTPConnectionCandidate, candidate->client);
}
else {
candidate = NULL;
}
}
else if (available) {
// before closing the available connection, try to find a message that can use it
for (other = FskListGetNext(self->targets, target); other; other = FskListGetNext(self->targets, other)) {
if (abs(other->message->priority) < abs(message->priority)) {
other = NULL;
break; // do not let a lower priority request get in ahead of a higher priority one
}
if (KprHTTPConnectionCandidate(available, other->message)) {
break;
}
}
if (other) {
FskInstrumentedItemSendMessageDebug(available, kprInstrumentedHTTPConnectionCandidate, available->client);
next = target;
target = other;
}
else
KprHTTPConnectionClose(available);
candidate = available;
}
else
break;
if (candidate) {
FskListRemove(&self->targets, target);
if (KprHTTPConnectionProcess(candidate, target)) {
// put back the message in the queue
KprHTTPClientAddTarget(target);
}
}
target = next;
}
}