void CSyncDebugger::Initialize(bool useBacktrace, unsigned numPlayers)
{
delete[] history;
history = NULL;
delete[] historybt;
historybt = NULL;
#ifdef HAVE_BACKTRACE
if (useBacktrace) {
historybt = new HistItemWithBacktrace[HISTORY_SIZE * BLOCK_SIZE];
memset(historybt, 0, HISTORY_SIZE * BLOCK_SIZE * sizeof(HistItemWithBacktrace));
} else
#endif
{
history = new HistItem[HISTORY_SIZE * BLOCK_SIZE];
memset(history, 0, HISTORY_SIZE * BLOCK_SIZE * sizeof(HistItem));
}
//cleanup
historyIndex = 0;
disable_history = false;
may_enable_history = false;
flop = 0;
players.clear();
players.resize(numPlayers);
pendingBlocksToRequest.clear();
waitingForBlockResponse = false;
// init logger
logger.SetFilename(useBacktrace ? LOGFILE_SERVER : LOGFILE_CLIENT);
logger.AddLine("SyncDebugger initialized");
logger.FlushBuffer();
}
/**
* @brief serverside network receiver
*
* Plugin for the CGameServer network code in GameServer.cpp.
* @return the number of bytes read from the network stream
*/
bool CSyncDebugger::ServerReceived(const unsigned char* inbuf)
{
bool syncDebugPacket = false;
switch (inbuf[0]) {
case NETMSG_SD_CHKRESPONSE:
if (*(short*)&inbuf[1] != HISTORY_SIZE * sizeof(unsigned) + 12) {
logger.AddLine("Server: received checksum response of %d instead of %d bytes", *(short*)&inbuf[1], HISTORY_SIZE * 4 + 12);
} else {
int player = inbuf[3];
if(player >= playerHandler->ActivePlayers() || player < 0) {
logger.AddLine("Server: got invalid playernum %d in checksum response", player);
} else {
logger.AddLine("Server: got checksum response from %d", player);
const unsigned* begin = (unsigned*)&inbuf[12];
const unsigned* end = begin + HISTORY_SIZE;
players[player].checksumResponses.resize(HISTORY_SIZE);
std::copy(begin, end, players[player].checksumResponses.begin());
players[player].remoteFlop = *(uint64_t*)&inbuf[4];
assert(!players[player].checksumResponses.empty());
int i = 0;
while (i < playerHandler->ActivePlayers() && !players[i].checksumResponses.empty()) ++i;
if (i == playerHandler->ActivePlayers()) {
ServerQueueBlockRequests();
logger.AddLine("Server: checksum responses received; %d block requests queued", pendingBlocksToRequest.size());
}
}
}
syncDebugPacket = true;
break;
case NETMSG_SD_BLKRESPONSE:
if (*(short*)&inbuf[1] != BLOCK_SIZE * sizeof(unsigned) + 4) {
logger.AddLine("Server: received block response of %d instead of %d bytes", *(short*)&inbuf[1], BLOCK_SIZE * 4 + 4);
} else {
int player = inbuf[3];
if(player >= playerHandler->ActivePlayers() || player < 0) {
logger.AddLine("Server: got invalid playernum %d in block response", player);
} else {
const unsigned* begin = (unsigned*)&inbuf[4];
const unsigned* end = begin + BLOCK_SIZE;
unsigned size = players[player].remoteHistory.size();
players[player].remoteHistory.resize(size + BLOCK_SIZE);
std::copy(begin, end, players[player].remoteHistory.begin() + size);
int i = 0;
size += BLOCK_SIZE;
while (i < playerHandler->ActivePlayers() && size == players[i].remoteHistory.size()) ++i;
if (i == playerHandler->ActivePlayers()) {
logger.AddLine("Server: block responses received");
ServerReceivedBlockResponses();
}
}
}
syncDebugPacket = true;
break;
default:
logger.AddLine("Server: unknown packet");
break;
}
logger.FlushBuffer();
return syncDebugPacket;
}
void CSyncDebugger::ServerQueueBlockRequests()
{
logger.AddLine("Server: queuing block requests");
boost::uint64_t correctFlop = 0;
for (int j = 0; j < playerHandler->ActivePlayers(); ++j) {
if (correctFlop) {
if (players[j].remoteFlop != correctFlop)
logger.AddLine(
#ifdef _WIN32
"Server: bad flop# %I64u instead of %I64u for player %d",
#else
"Server: bad flop# %llu instead of %llu for player %d",
#endif
players[j].remoteFlop, correctFlop, j);
} else {
correctFlop = players[j].remoteFlop;
}
}
unsigned i = ((unsigned)(correctFlop % (HISTORY_SIZE * BLOCK_SIZE)) / BLOCK_SIZE) + 1;
for (unsigned c = 0; c < HISTORY_SIZE; ++i, ++c) {
unsigned correctChecksum = 0;
if (i == HISTORY_SIZE) i = 0;
for (int j = 0; j < playerHandler->ActivePlayers(); ++j) {
if (correctChecksum && players[j].checksumResponses[i] != correctChecksum) {
pendingBlocksToRequest.push_back(i);
break;
}
correctChecksum = players[j].checksumResponses[i];
}
}
if (!pendingBlocksToRequest.empty()) {
logger.AddLine("Server: blocks: %u equal, %u not equal", HISTORY_SIZE - pendingBlocksToRequest.size(), pendingBlocksToRequest.size());
requestedBlocks = pendingBlocksToRequest;
// we know the first FPU bug occured in block # ii, so we send out a block request for it.
// serverNet->SendData<unsigned> (NETMSG_SD_BLKREQUEST, ii);
} else {
logger.AddLine("Server: huh, all blocks equal?!?");
clientNet->Send(CBaseNetProtocol::Get().SendSdReset());
}
//cleanup
for (PlayerVec::iterator it = players.begin(); it != players.end(); ++it)
it->checksumResponses.clear();
logger.FlushBuffer();
}
/**
* @brief initialize
*
* Initialize the sync debugger. Pass true for a server (this requires approx.
* 144 megabytes on 32 bit systems and 240 megabytes on 64 bit systems) and
* false for a client (requires only 16 megabytes extra).
* FIXME update this comment to reflect new values
*/
void CSyncDebugger::Initialize(bool useBacktrace, unsigned numPlayers)
{
delete[] history;
history = 0;
delete[] historybt;
historybt = 0;
#ifdef HAVE_BACKTRACE
if (useBacktrace) {
historybt = new HistItemWithBacktrace[HISTORY_SIZE * BLOCK_SIZE];
memset(historybt, 0, HISTORY_SIZE * BLOCK_SIZE * sizeof(HistItemWithBacktrace));
} else
#endif
{
history = new HistItem[HISTORY_SIZE * BLOCK_SIZE];
memset(history, 0, HISTORY_SIZE * BLOCK_SIZE * sizeof(HistItem));
}
//cleanup
historyIndex = 0;
disable_history = false;
may_enable_history = false;
flop = 0;
for (unsigned j = 0; j < numPlayers; ++j) {
PlayerStruct buf;
buf.checksumResponses.clear();
buf.remoteHistory.clear();
buf.remoteFlop = 0;
players.push_back(buf);
}
pendingBlocksToRequest.clear();
waitingForBlockResponse = false;
// init logger
logger.SetFilename(useBacktrace ? LOGFILE_SERVER : LOGFILE_CLIENT);
logger.AddLine("Syncdebugger initialised");
logger.FlushBuffer();
}
/**
* @brief clientside network receiver
*
* Plugin for the CGame network code in Game.cpp.
* @return the number of bytes read from the network stream
*/
bool CSyncDebugger::ClientReceived(const unsigned char* inbuf)
{
bool syncDebugPacket = false;
switch (inbuf[0]) {
case NETMSG_SD_CHKREQUEST:
if (gs->frameNum != *(int*)&inbuf[1]) {
logger.AddLine("Client: received checksum request for frame %d instead of %d", *(int*)&inbuf[1], gs->frameNum);
} else {
disable_history = true; // no more additions to the history until we're done
may_enable_history = false;
ClientSendChecksumResponse();
logger.AddLine("Client: checksum response sent");
}
syncDebugPacket = true;
break;
case NETMSG_SD_BLKREQUEST:
if (*(unsigned short*)&inbuf[1] >= HISTORY_SIZE) {
logger.AddLine("Client: invalid block number %d in block request", *(unsigned short*)&inbuf[1]);
} else {
ClientSendBlockResponse(*(unsigned short*)&inbuf[1]);
logger.AddLine("Client: block response sent for block %d", *(unsigned short*)&inbuf[1]);
// simple progress indication
logOutput.Print("[SD] Client: %d / %d", *(unsigned short*)&inbuf[3], *(unsigned short*)&inbuf[5]);
}
syncDebugPacket = true;
break;
case NETMSG_SD_RESET:
logger.CloseSession();
logOutput.Print("[SD] Client: Done!");
// disable_history = false;
may_enable_history = true;
syncDebugPacket = true;
break;
}
logger.FlushBuffer();
return syncDebugPacket;
}