Imbus/xv6-riscv-kernel
1
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

modify each page in usertests countfree()

Browse source 
get rid of static for walk() and freewalk()
This commit is contained in:
Robert Morris 2020-08-07 05:32:48 -04:00
parent 050a69610a
commit 8b9b799937
4 changed files with 11 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

5
user/usertests.c
View file

@ -2251,9 +2251,12 @@ countfree()
int n = 0;
while(1){
if((uint64)sbrk(4096) == 0xffffffffffffffff){
uint64 a = (uint64) sbrk(4096);
if(a == 0xffffffffffffffff){
break;
}
// modify the memory to make sure it's really allocated.
*(char *)(a - 1) = 1;
n += 1;
}
sbrk(-((uint64)sbrk(0) - sz0));