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fixed that the server crashes on too many snap items (Closes #317), optimised snapshot hashing

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This commit is contained in:
oy 2011-01-18 18:09:09 +01:00
parent 0b14286c7f
commit 8cdabb890f
2 changed files with 11 additions and 6 deletions
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15
src/engine/shared/snapshot.cpp
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@ -80,7 +80,7 @@ static void GenerateHash(CItemList *pHashlist, CSnapshot *pSnapshot)
for(int i = 0; i < pSnapshot->NumItems(); i++)
{
int Key = pSnapshot->GetItem(i)->Key();
int HashID = ((Key>>8)&0xf0) | (Key&0xf);
int HashID = ((Key>>12)&0xf0) | (Key&0xf);
if(pHashlist[HashID].m_Num != 64)
{
pHashlist[HashID].m_aIndex[pHashlist[HashID].m_Num] = i;
@ -92,7 +92,7 @@ static void GenerateHash(CItemList *pHashlist, CSnapshot *pSnapshot)
static int GetItemIndexHashed(int Key, const CItemList *pHashlist)
{
int HashID = ((Key>>8)&0xf0) | (Key&0xf);
int HashID = ((Key>>12)&0xf0) | (Key&0xf);
for(int i = 0; i < pHashlist[HashID].m_Num; i++)
{
if(pHashlist[HashID].m_aKeys[i] == Key)
@ -523,6 +523,14 @@ int CSnapshotBuilder::Finish(void *SpnapData)
void *CSnapshotBuilder::NewItem(int Type, int ID, int Size)
{
if(m_DataSize + sizeof(CSnapshotItem) + Size >= CSnapshot::MAX_SIZE ||
m_NumItems+1 >= MAX_ITEMS)
{
dbg_assert(m_DataSize < CSnapshot::MAX_SIZE, "too much data");
dbg_assert(m_NumItems < MAX_ITEMS, "too many items");
return 0;
}
CSnapshotItem *pObj = (CSnapshotItem *)(m_aData + m_DataSize);
mem_zero(pObj, sizeof(CSnapshotItem) + Size);
@ -530,9 +538,6 @@ void *CSnapshotBuilder::NewItem(int Type, int ID, int Size)
m_aOffsets[m_NumItems] = m_DataSize;
m_DataSize += sizeof(CSnapshotItem) + Size;
m_NumItems++;
dbg_assert(m_DataSize < CSnapshot::MAX_SIZE, "too much data");
dbg_assert(m_NumItems < MAX_ITEMS, "too many items");
return pObj->Data();
}

2
src/engine/shared/snapshot.h
View file

@ -114,7 +114,7 @@ class CSnapshotBuilder
{
enum
{
MAX_ITEMS = 1024*2
MAX_ITEMS = 1024
};
char m_aData[CSnapshot::MAX_SIZE];