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Make cache1d try a little harder to find a suitable block before bailing with "CACHE SPACE ALL LOCKED UP!"

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git-svn-id: https://svn.eduke32.com/eduke32@7764 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2019-07-06 16:30:54 +00:00 committed by Christoph Oelckers
parent 53000d1f31
commit 940df04eb6
1 changed files with 38 additions and 24 deletions
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62
source/build/src/cache1d.cpp
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@ -174,29 +174,15 @@ static inline void inc_and_check_cacnum(void)
reportandexit("Too many objects in cache! (cacnum > MAXCACHEOBJECTS)"); reportandexit("Too many objects in cache! (cacnum > MAXCACHEOBJECTS)");
} }
void cacheAllocateBlock(intptr_t *newhandle, int32_t newbytes, char *newlockptr) int32_t cacheFindBlock(int32_t newbytes, int32_t *besto, int32_t *bestz)
{ {
if (EDUKE32_PREDICT_FALSE(*newlockptr == 0))
reportandexit("ALLOCACHE CALLED WITH LOCK OF 0!");
// Make all requests a multiple of 16 bytes
newbytes = (newbytes + 15) & ~0xf;
if (EDUKE32_PREDICT_FALSE((unsigned)newbytes > (unsigned)cachesize))
{
initprintf("Cachesize: %d\n",cachesize);
initprintf("*Newhandle: 0x%" PRIxPTR ", Newbytes: %d, *Newlock: %d\n",(intptr_t)newhandle,newbytes,*newlockptr);
reportandexit("BUFFER TOO BIG TO FIT IN CACHE!");
}
int32_t bestz = 0;
int32_t besto = 0;
int32_t bestval = 0x7fffffff; int32_t bestval = 0x7fffffff;
for (native_t z=cacnum-1, o1=cachesize; z>=0; z--) for (native_t z=cacnum-1, o1=cachesize; z>=0; z--)
{ {
o1 -= cac[z].leng; o1 -= cac[z].leng;
int32_t o2 = o1 + newbytes;
int32_t const o2 = o1 + newbytes;
if (o2 > cachesize) if (o2 > cachesize)
continue; continue;
@ -207,8 +193,7 @@ void cacheAllocateBlock(intptr_t *newhandle, int32_t newbytes, char *newlockptr)
{ {
if (*cac[zz].lock == 0) if (*cac[zz].lock == 0)
continue; continue;
else if (*cac[zz].lock >= 200)
if (*cac[zz].lock >= 200)
{ {
daval = 0x7fffffff; daval = 0x7fffffff;
break; break;
@ -226,18 +211,47 @@ void cacheAllocateBlock(intptr_t *newhandle, int32_t newbytes, char *newlockptr)
if (daval < bestval) if (daval < bestval)
{ {
bestval = daval; bestval = daval;
besto = o1; *besto = o1;
bestz = z; *bestz = z;
if (bestval == 0) if (bestval == 0)
break; break;
} }
} }
//printf("%d %d %d\n",besto,newbytes,*newlockptr); return bestval;
}
if (EDUKE32_PREDICT_FALSE(bestval == 0x7fffffff)) void cacheAllocateBlock(intptr_t* newhandle, int32_t newbytes, char* newlockptr)
reportandexit("CACHE SPACE ALL LOCKED UP!"); {
// Make all requests a multiple of 16 bytes
newbytes = (newbytes + 15) & ~0xf;
#ifdef DEBUGGINGAIDS
if (EDUKE32_PREDICT_FALSE(!newlockptr || *newlockptr == 0))
reportandexit("ALLOCACHE CALLED WITH LOCK OF 0!");
#endif
if (EDUKE32_PREDICT_FALSE((unsigned)newbytes > (unsigned)cachesize))
{
initprintf("Cachesize: %d\n",cachesize);
initprintf("*Newhandle: 0x%" PRIxPTR ", Newbytes: %d, *Newlock: %d\n",(intptr_t)newhandle,newbytes,*newlockptr);
reportandexit("BUFFER TOO BIG TO FIT IN CACHE!");
}
int32_t bestz = 0;
int32_t besto = 0;
int cnt = cacnum-1;
// if we can't find a block, try to age the cache until we can
// it's better than the alternative of aborting the entire program
while (cacheFindBlock(newbytes, &besto, &bestz) == 0x7fffffff)
{
cacheAgeEntries();
if (!cnt--) reportandexit("CACHE SPACE ALL LOCKED UP!");
}
//printf("%d %d %d\n",besto,newbytes,*newlockptr);
//Suck things out //Suck things out
int32_t sucklen = -newbytes; int32_t sucklen = -newbytes;