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Add global and per-peer queue limits

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This commit is contained in:
kwolekr 2013-02-14 18:32:56 -05:00
parent b9d8e59bbf
commit 3b7a445cd7
3 changed files with 48 additions and 26 deletions
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43
src/emerge.cpp
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@ -88,7 +88,10 @@ Mapgen *EmergeManager::getMapgen() {
}
bool EmergeManager::enqueueBlockEmerge(u16 peer_id, v3s16 p, bool allow_generate) { ///return false if adding failed, or queue full!
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;
if (allow_generate)
@ -103,14 +106,30 @@ bool EmergeManager::enqueueBlockEmerge(u16 peer_id, v3s16 p, bool allow_generate
{
JMutexAutoLock queuelock(queuemutex);
std::map<v3s16, u8>::const_iterator iter = blocks_enqueued.find(p);
count = blocks_enqueued.size();
u16 queuelimit_total = 256;
if (count >= queuelimit_total)
return false;
count = peer_queue_count[peer_id];
u16 queuelimit_peer = allow_generate ? 1 : 5;
if (count >= queuelimit_peer)
return false;
iter = blocks_enqueued.find(p);
if (iter != blocks_enqueued.end()) {
flags |= iter->second;
blocks_enqueued[p] = flags;
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;
blocks_enqueued.insert(std::make_pair(p, flags));
emergethread->blockqueue.push(p);
}
emergethread->qevent.signal();
@ -120,6 +139,7 @@ bool EmergeManager::enqueueBlockEmerge(u16 peer_id, v3s16 p, bool allow_generate
bool EmergeManager::popBlockEmerge(v3s16 *pos, u8 *flags) {
std::map<v3s16, BlockEmergeData *>::iterator iter;
JMutexAutoLock queuelock(queuemutex);
if (emergethread->blockqueue.empty())
@ -128,12 +148,17 @@ bool EmergeManager::popBlockEmerge(v3s16 *pos, u8 *flags) {
emergethread->blockqueue.pop();
*pos = p;
iter = blocks_enqueued.find(p);
if (iter == blocks_enqueued.end())
return false; //uh oh, queue and map out of sync!!
std::map<v3s16, u8>::iterator iter = blocks_enqueued.find(p);
if (iter == blocks_enqueued.end()) //uh oh, this isn't right!!!!!!!!!!!!!!!!!!
return false;
BlockEmergeData *bedata = iter->second;
*flags = bedata->flags;
peer_queue_count[bedata->peer_requested]--;
*flags = iter->second;
delete bedata;
blocks_enqueued.erase(iter);
return true;