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The zalloc pool's size calculation breaks if sbrk() does not return

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contiguous chunks of memory.  It happens to do so in the bootstrap
code, but not necessarily in other places.
MFC after:	7 days
This commit is contained in:
dillon 2002-12-19 23:23:20 +00:00
parent 514c635ee6
commit 6dc747b608
1 changed files with 3 additions and 3 deletions
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6
lib/libstand/zalloc.c
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@ -247,22 +247,22 @@ zextendPool(MemPool *mp, void *base, iaddr_t bytes)
mp->mp_Base = base;
mp->mp_Used = bytes;
mp->mp_End = (char *)base + bytes;
mp->mp_Size = bytes;
} else {
void *pend = (char *)mp->mp_Base + mp->mp_Size;
if (base < mp->mp_Base) {
/* mp->mp_Size += (char *)mp->mp_Base - (char *)base; */
mp->mp_Size += (char *)mp->mp_Base - (char *)base;
mp->mp_Used += (char *)mp->mp_Base - (char *)base;
mp->mp_Base = base;
}
base = (char *)base + bytes;
if (base > pend) {
/* mp->mp_Size += (char *)base - (char *)pend; */
mp->mp_Size += (char *)base - (char *)pend;
mp->mp_Used += (char *)base - (char *)pend;
mp->mp_End = (char *)base;
}
}
mp->mp_Size += bytes;
}
#ifdef ZALLOCDEBUG