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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "data/data_pts_waiter.h"
#include "api/api_updates.h"
PtsWaiter::PtsWaiter(not_null<Api::Updates*> owner) : _owner(owner) {
}
uint64 PtsWaiter::ptsKey(PtsSkippedQueue queue, int32 pts) {
return _queue.emplace(
uint64(uint32(pts)) << 32 | (++_skippedKey),
queue
).first->first;
}
void PtsWaiter::setWaitingForSkipped(ChannelData *channel, crl::time ms) {
if (ms >= 0) {
_owner->ptsWaiterStartTimerFor(channel, ms);
_waitingForSkipped = true;
} else {
_waitingForSkipped = false;
checkForWaiting(channel);
}
}
void PtsWaiter::setWaitingForShortPoll(ChannelData *channel, crl::time ms) {
if (ms >= 0) {
_owner->ptsWaiterStartTimerFor(channel, ms);
_waitingForShortPoll = true;
} else {
_waitingForShortPoll = false;
checkForWaiting(channel);
}
}
void PtsWaiter::checkForWaiting(ChannelData *channel) {
if (!_waitingForSkipped && !_waitingForShortPoll) {
_owner->ptsWaiterStartTimerFor(channel, -1);
}
}
void PtsWaiter::applySkippedUpdates(ChannelData *channel) {
if (!_waitingForSkipped) {
return;
}
setWaitingForSkipped(channel, -1);
if (_queue.empty()) {
return;
}
++_applySkippedLevel;
for (auto i = _queue.cbegin(), e = _queue.cend(); i != e; ++i) {
switch (i->second) {
case SkippedUpdate: {
_owner->applyUpdateNoPtsCheck(_updateQueue[i->first]);
} break;
case SkippedUpdates: {
_owner->applyUpdatesNoPtsCheck(_updatesQueue[i->first]);
} break;
}
}
--_applySkippedLevel;
clearSkippedUpdates();
}
void PtsWaiter::clearSkippedUpdates() {
_queue.clear();
_updateQueue.clear();
_updatesQueue.clear();
_applySkippedLevel = 0;
}
bool PtsWaiter::updated(
ChannelData *channel,
int32 pts,
int32 count,
const MTPUpdates &updates) {
if (_requesting || _applySkippedLevel) {
return true;
} else if (pts <= _good && count > 0) {
return false;
} else if (check(channel, pts, count)) {
return true;
}
_updatesQueue.emplace(ptsKey(SkippedUpdates, pts), updates);
return false;
}
bool PtsWaiter::updated(
ChannelData *channel,
int32 pts,
int32 count,
const MTPUpdate &update) {
if (_requesting || _applySkippedLevel) {
return true;
} else if (pts <= _good && count > 0) {
return false;
} else if (check(channel, pts, count)) {
return true;
}
_updateQueue.emplace(ptsKey(SkippedUpdate, pts), update);
return false;
}
bool PtsWaiter::updated(ChannelData *channel, int32 pts, int32 count) {
if (_requesting || _applySkippedLevel) {
return true;
} else if (pts <= _good && count > 0) {
return false;
}
return check(channel, pts, count);
}
bool PtsWaiter::updateAndApply(
ChannelData *channel,
int32 pts,
int32 count,
const MTPUpdates &updates) {
if (!updated(channel, pts, count, updates)) {
return false;
}
if (!_waitingForSkipped || _queue.empty()) {
// Optimization - no need to put in queue and back.
_owner->applyUpdatesNoPtsCheck(updates);
} else {
_updatesQueue.emplace(ptsKey(SkippedUpdates, pts), updates);
applySkippedUpdates(channel);
}
return true;
}
bool PtsWaiter::updateAndApply(
ChannelData *channel,
int32 pts,
int32 count,
const MTPUpdate &update) {
if (!updated(channel, pts, count, update)) {
return false;
}
if (!_waitingForSkipped || _queue.empty()) {
// Optimization - no need to put in queue and back.
_owner->applyUpdateNoPtsCheck(update);
} else {
_updateQueue.emplace(ptsKey(SkippedUpdate, pts), update);
applySkippedUpdates(channel);
}
return true;
}
bool PtsWaiter::updateAndApply(
ChannelData *channel,
int32 pts,
int32 count) {
if (!updated(channel, pts, count)) {
return false;
}
applySkippedUpdates(channel);
return true;
}
// Return false if need to save that update and apply later.
bool PtsWaiter::check(ChannelData *channel, int32 pts, int32 count) {
if (!inited()) {
init(pts);
return true;
}
_last = qMax(_last, pts);
_count += count;
if (_last == _count) {
_good = _last;
return true;
} else if (_last < _count) {
setWaitingForSkipped(channel, 1);
} else {
setWaitingForSkipped(channel, kWaitForSkippedTimeout);
}
return !count;
}
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