bool EmergeThread::popBlockEmerge(v3s16 *pos, u8 *flags) {
std::map<v3s16, BlockEmergeData *>::iterator iter;
JMutexAutoLock queuelock(emerge->queuemutex);
if (blockqueue.empty())
return false;
v3s16 p = blockqueue.front();
blockqueue.pop();
*pos = p;
iter = emerge->blocks_enqueued.find(p);
if (iter == emerge->blocks_enqueued.end())
return false; //uh oh, queue and map out of sync!!
BlockEmergeData *bedata = iter->second;
*flags = bedata->flags;
emerge->peer_queue_count[bedata->peer_requested]--;
delete bedata;
emerge->blocks_enqueued.erase(iter);
return true;
}
bool EmergeManager::enqueueBlockEmergeEx(
v3s16 blockpos,
u16 peer_id,
u16 flags,
EmergeCompletionCallback callback,
void *callback_param)
{
EmergeThread *thread = NULL;
bool entry_already_exists = false;
{
MutexAutoLock queuelock(m_queue_mutex);
if (!pushBlockEmergeData(blockpos, peer_id, flags,
callback, callback_param, &entry_already_exists))
return false;
if (entry_already_exists)
return true;
thread = getOptimalThread();
thread->pushBlock(blockpos);
}
thread->signal();
return true;
}
bool EmergeManager::enqueueBlockEmerge(u16 peer_id, v3s16 p, bool allow_generate)
{
std::map<v3s16, BlockEmergeData *>::const_iterator iter;
BlockEmergeData *bedata;
u16 count;
u8 flags = 0;
int idx = 0;
if (allow_generate)
flags |= BLOCK_EMERGE_ALLOWGEN;
{
MutexAutoLock queuelock(queuemutex);
count = blocks_enqueued.size();
if (count >= qlimit_total)
return false;
count = peer_queue_count[peer_id];
u16 qlimit_peer = allow_generate ? qlimit_generate : qlimit_diskonly;
if (count >= qlimit_peer)
return false;
iter = blocks_enqueued.find(p);
if (iter != blocks_enqueued.end()) {
bedata = iter->second;
bedata->flags |= flags;
return true;
}
bedata = new BlockEmergeData;
bedata->flags = flags;
bedata->peer_requested = peer_id;
blocks_enqueued.insert(std::make_pair(p, bedata));
peer_queue_count[peer_id] = count + 1;
// insert into the EmergeThread queue with the least items
int lowestitems = emergethread[0]->blockqueue.size();
for (u32 i = 1; i != emergethread.size(); i++) {
int nitems = emergethread[i]->blockqueue.size();
if (nitems < lowestitems) {
idx = i;
lowestitems = nitems;
}
}
emergethread[idx]->blockqueue.push(p);
}
emergethread[idx]->qevent.signal();
return true;
}
bool EmergeThread::popBlockEmerge(v3s16 *pos, BlockEmergeData *bedata)
{
MutexAutoLock queuelock(m_emerge->m_queue_mutex);
if (m_block_queue.empty())
return false;
*pos = m_block_queue.front();
m_block_queue.pop();
m_emerge->popBlockEmergeData(*pos, bedata);
return true;
}
void EmergeThread::cancelPendingItems()
{
MutexAutoLock queuelock(m_emerge->m_queue_mutex);
while (!m_block_queue.empty()) {
BlockEmergeData bedata;
v3s16 pos;
pos = m_block_queue.front();
m_block_queue.pop();
m_emerge->popBlockEmergeData(pos, &bedata);
runCompletionCallbacks(pos, EMERGE_CANCELLED, bedata.callbacks);
}
}
void *EmergeThread::run()
{
DSTACK(__FUNCTION_NAME);
BEGIN_DEBUG_EXCEPTION_HANDLER
v3s16 last_tried_pos(-32768,-32768,-32768); // For error output
v3s16 p;
u8 flags = 0;
map = (ServerMap *)&(m_server->m_env->getMap());
emerge = m_server->m_emerge;
mapgen = emerge->mapgen[id];
enable_mapgen_debug_info = emerge->mapgen_debug_info;
while (!stopRequested())
try {
if (!popBlockEmerge(&p, &flags)) {
qevent.wait();
continue;
}
last_tried_pos = p;
if (blockpos_over_limit(p))
continue;
bool allow_generate = flags & BLOCK_EMERGE_ALLOWGEN;
EMERGE_DBG_OUT("p=" PP(p) " allow_generate=" << allow_generate);
/*
Try to fetch block from memory or disk.
If not found and asked to generate, initialize generator.
*/
BlockMakeData data;
MapBlock *block = NULL;
std::map<v3s16, MapBlock *> modified_blocks;
if (getBlockOrStartGen(p, &block, &data, allow_generate) && mapgen) {
{
ScopeProfiler sp(g_profiler, "EmergeThread: Mapgen::makeChunk", SPT_AVG);
TimeTaker t("mapgen::make_block()");
mapgen->makeChunk(&data);
if (enable_mapgen_debug_info == false)
t.stop(true); // Hide output
}
{
//envlock: usually 0ms, but can take either 30 or 400ms to acquire
MutexAutoLock envlock(m_server->m_env_mutex);
ScopeProfiler sp(g_profiler, "EmergeThread: after "
"Mapgen::makeChunk (envlock)", SPT_AVG);
map->finishBlockMake(&data, modified_blocks);
block = map->getBlockNoCreateNoEx(p);
if (block) {
/*
Do some post-generate stuff
*/
v3s16 minp = data.blockpos_min * MAP_BLOCKSIZE;
v3s16 maxp = data.blockpos_max * MAP_BLOCKSIZE +
v3s16(1,1,1) * (MAP_BLOCKSIZE - 1);
// Ignore map edit events, they will not need to be sent
// to anybody because the block hasn't been sent to anybody
MapEditEventAreaIgnorer
ign(&m_server->m_ignore_map_edit_events_area,
VoxelArea(minp, maxp));
try { // takes about 90ms with -O1 on an e3-1230v2
m_server->getScriptIface()->environment_OnGenerated(
minp, maxp, mapgen->blockseed);
} catch (LuaError &e) {
m_server->setAsyncFatalError("Lua: " + std::string(e.what()));
}
EMERGE_DBG_OUT("ended up with: " << analyze_block(block));
m_server->m_env->activateBlock(block, 0);
}
}
}
/*
Set sent status of modified blocks on clients
*/
// Add the originally fetched block to the modified list
if (block)
modified_blocks[p] = block;
if (modified_blocks.size() > 0) {
m_server->SetBlocksNotSent(modified_blocks);
}
}
catch (VersionMismatchException &e) {
std::ostringstream err;
err << "World data version mismatch in MapBlock " << PP(last_tried_pos) << std::endl
<< "----" << std::endl
<< "\"" << e.what() << "\"" << std::endl
<< "See debug.txt." << std::endl
<< "World probably saved by a newer version of " PROJECT_NAME_C "."
<< std::endl;
m_server->setAsyncFatalError(err.str());
}
catch (SerializationError &e) {
std::ostringstream err;
err << "Invalid data in MapBlock " << PP(last_tried_pos) << std::endl
<< "----" << std::endl
<< "\"" << e.what() << "\"" << std::endl
<< "See debug.txt." << std::endl
<< "You can ignore this using [ignore_world_load_errors = true]."
<< std::endl;
m_server->setAsyncFatalError(err.str());
}
{
MutexAutoLock queuelock(emerge->queuemutex);
while (!blockqueue.empty())
{
v3s16 p = blockqueue.front();
blockqueue.pop();
std::map<v3s16, BlockEmergeData *>::iterator iter;
iter = emerge->blocks_enqueued.find(p);
if (iter == emerge->blocks_enqueued.end())
continue; //uh oh, queue and map out of sync!!
BlockEmergeData *bedata = iter->second;
delete bedata;
}
}
END_DEBUG_EXCEPTION_HANDLER(errorstream)
return NULL;
}