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Don't use iterators after a promise is set.

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GitOrigin-RevId: eba7487d7025410ae4a2230d4ce09cfa02012fdf
This commit is contained in:
levlam 2020-10-24 01:45:04 +03:00
parent c768cd202a
commit 0846e7aec5
1 changed files with 21 additions and 12 deletions
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33
td/telegram/MessagesManager.cpp
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@ -22964,8 +22964,10 @@ void MessagesManager::on_upload_message_media_finished(int64 media_album_id, Dia
if (request.finished_count == request.message_ids.size() || request.results[pos].is_error()) {
// must use send_closure_later if some messages may be being deleted now
// but this function is called only through send_closure_later, so there should be no being deleted messages
// we must to use synchronous calls to keep the correct message order during copying of multiple messages
for (auto request_message_id : request.message_ids) {
// we must use synchronous calls to keep the correct message order during copying of multiple messages
// but "request" iterator can be invalidated by do_send_message_group, so it must not be used below
auto message_ids = request.message_ids;
for (auto request_message_id : message_ids) {
LOG(INFO) << "Send on_media_message_ready_to_send for " << request_message_id << " in " << dialog_id;
auto promise = PromiseCreator::lambda([this, media_album_id](Result<Message *> result) {
if (result.is_error() || G()->close_flag()) {
@ -23159,17 +23161,27 @@ void MessagesManager::on_media_message_ready_to_send(DialogId dialog_id, Message
void MessagesManager::on_yet_unsent_media_queue_updated(DialogId dialog_id) {
auto queue_id = get_sequence_dispatcher_id(dialog_id, MessageContentType::Photo);
CHECK(queue_id & 1);
auto &queue = yet_unsent_media_queues_[queue_id];
LOG(INFO) << "Queue for " << dialog_id << " is updated to size of " << queue.size();
while (!queue.empty()) {
while (true) {
auto it = yet_unsent_media_queues_.find(queue_id);
if (it == yet_unsent_media_queues_.end()) {
return;
}
auto &queue = it->second;
if (queue.empty()) {
yet_unsent_media_queues_.erase(it);
return;
}
auto first_it = queue.begin();
if (!first_it->second) {
break;
return;
}
auto m = get_message({dialog_id, MessageId(first_it->first)});
auto promise = std::move(first_it->second);
queue.erase(first_it);
LOG(INFO) << "Queue for " << dialog_id << " now has size " << queue.size();
// don't use it/queue/first_it after promise is called
if (m != nullptr) {
LOG(INFO) << "Can send " << FullMessageId{dialog_id, m->message_id};
promise.set_value(std::move(m));
@ -23177,10 +23189,6 @@ void MessagesManager::on_yet_unsent_media_queue_updated(DialogId dialog_id) {
promise.set_error(Status::Error(400, "Message not found"));
}
}
LOG(INFO) << "Queue for " << dialog_id << " now has size " << queue.size();
if (queue.empty()) {
yet_unsent_media_queues_.erase(queue_id);
}
}
Result<MessageId> MessagesManager::send_bot_start_message(UserId bot_user_id, DialogId dialog_id,
@ -34236,7 +34244,9 @@ void MessagesManager::after_get_channel_difference(DialogId dialog_id, bool succ
auto it_get_message_requests = postponed_get_message_requests_.find(dialog_id);
if (it_get_message_requests != postponed_get_message_requests_.end()) {
CHECK(d != nullptr);
for (auto &request : it_get_message_requests->second) {
auto requests = std::move(it_get_message_requests->second);
postponed_get_message_requests_.erase(it_get_message_requests);
for (auto &request : requests) {
auto message_id = request.message_id;
LOG(INFO) << "Run postponed getMessage request for " << message_id << " in " << dialog_id;
CHECK(message_id.is_valid());
@ -34247,7 +34257,6 @@ void MessagesManager::after_get_channel_difference(DialogId dialog_id, bool succ
get_message_from_server({dialog_id, message_id}, std::move(request.promise), std::move(request.input_message));
}
}
postponed_get_message_requests_.erase(it_get_message_requests);
}
auto it = pending_channel_on_get_dialogs_.find(dialog_id);