jimzah/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src.git synced 2024-11-27 09:12:44 +00:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

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

Browse Source 
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:
Matthew Dillon 2002-12-19 23:23:20 +00:00
parent 86fea6be59
commit 914d31686b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=108108
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
lib/libstand/zalloc.c
View File

@ -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