| Lab | report | Final Data |
|---|---|---|
| Lab 1 Thread | Lab 1 report | 2019-03-08 |
| Lab 2 Thread Schedule | Lab 2 report | 2019-03-09 |
| Lab 3 Thread IPC | Lab 3 report | 2019-03-22 |
| MegaDam | MegaDam | 2019-04-22 |
| Lab 4 Memory | Lab 4 report | 2019-05-11 |
| Lab 5 FileSystem | Lab 5 report | 2019-06-02 |
| Lab 6 System Call | Lab 6 report | 2019-06-03 |
| SpinLock XV6 | SpinLock XV6 | 2019-06-03 |
| XV6 IPC | XV6 IPC | 2019-06-13 |
| XV6 Thread | XV6 Thread | 2019-06-15 |
| XV6 FileSystem | XV6 FS | 2019-06-15 |
| XV6 VitualMemory | XV6 VM | 2019-06-15 |
| XV6 SysCall | XV6 SysCall | 2019-06-16 |
- The order of
#inculudeis very import!!! - More DEBUG than printf.
Shoudld be
Initializing address space, num pages 10, size 1280
Initializing code segment, at 0x0, size 256
Initializing stack register to 1264
Starting thread "main" at time 10
Reading VA 0x0, size 4
Translate 0x0, read: phys addr = 0x0
value read = 0c000034
At PC = 0x0: JAL 52
Reading VA 0x4, size 4
Translate 0x4, read: phys addr = 0x4
value read = 00000000
At PC = 0x4: SLL r0,r0,0
Reading VA 0xd0, size 4
Translate 0xd0, read: phys addr = 0xd0
value read = 27bdffe8
At PC = 0xd0: ADDIU r29,r29,-24
Reading VA 0xd4, size 4
Translate 0xd4, read: phys addr = 0xd4
value read = afbf0014
At PC = 0xd4: SW r31,20(r29)
Writing VA 0x4ec, size 4, value 0x8
Translate 0x4ec, write: phys addr = 0x4ec
Reading VA 0xd8, size 4
Translate 0xd8, read: phys addr = 0xd8
value read = afbe0010
At PC = 0xd8: SW r30,16(r29)
Writing VA 0x4e8, size 4, value 0x0
Translate 0x4e8, write: phys addr = 0x4e8
Reading VA 0xdc, size 4
Translate 0xdc, read: phys addr = 0xdc
value read = 0c000030
At PC = 0xdc: JAL 48
Reading VA 0xe0, size 4
Translate 0xe0, read: phys addr = 0xe0
value read = 03a0f021
At PC = 0xe0: ADDU r30,r29,r0
Reading VA 0xc0, size 4
Translate 0xc0, read: phys addr = 0xc0
value read = 03e00008
At PC = 0xc0: JR r0,r31
Reading VA 0xc4, size 4
Translate 0xc4, read: phys addr = 0xc4
value read = 00000000
At PC = 0xc4: SLL r0,r0,0
Reading VA 0xe4, size 4
Translate 0xe4, read: phys addr = 0xe4
value read = 0c000004
At PC = 0xe4: JAL 4
Reading VA 0xe8, size 4
Translate 0xe8, read: phys addr = 0xe8
value read = 00000000
At PC = 0xe8: SLL r0,r0,0
Reading VA 0x10, size 4
Translate 0x10, read: phys addr = 0x10
value read = 24020000
At PC = 0x10: ADDIU r2,r0,0
Reading VA 0x14, size 4
Translate 0x14, read: phys addr = 0x14
value read = 0000000c
At PC = 0x14: SYSCALL
Exception: syscall
Shutdown, initiated by user program.
Machine halting!
Ticks: total 22, idle 0, system 10, user 12
Disk I/O: reads 0, writes 0
Console I/O: reads 0, writes 0
Paging: faults 0
Network I/O: packets received 0, sent 0
Cleaning up...
One
Write by Jiang Huiqiang 1801210840 in 2019-05-05
Initializing address space, num pages 10, size 1280
Initializing code segment, at 0x0, size 256
Initializing stack register to 1264
Starting thread "main" at time 10
Reading VA 0x0, size 4
Translate 0x0, read: *** no valid TLB entry found for this virtual page!
Exception: page fault/no TLB entry
Unexpected user mode exception 2 0
Assertion failed: line 110, file "../userprog/exception.cc"
[1] 2622 abort ./nachos -x ../test/halt -d am
TLB MIss Time: 66, Ratio TLB Miss:5.64% TLB MIss Time: 50, Ratio TLB Miss:4.31%
In file included from ../threads/thread.h:44:0,
from ../threads/scheduler.h:14,
from ../threads/system.h:13,
from ../threads/main.cc:53:
../userprog/addrspace.h:35:3: error: 'TranslationEntry' does not name a type
TranslationEntry *pageTable; // Assume linear page table translation
The order of 'include' is very import.
int have_many_1(int n ){
int count = 0;
while(n){
count++;
n = (n-1) & n;
}
return count;
}
// find last 1 position -> to 10 scale
_bit = n & ((n - 1)^-1);
f_bit = n & (~(n - 1))- Maybe the work of Lab4 will trouble in Lab 5 about time_t and other!!!
- The Init FileSystem is necessary.
./nachos -f - You must delete the code of Thread in main.cc
Until now, I have not find problem in where. But I know it's cause by lab4 code.
openFile = fileSystem->Open(to);
ASSERT(openFile != NULL);you must run ./nachos -f before other
you should use strncpy rather than strcpy
strncpy(type, fileType, sizeof type - 1);
type[sizeof type - 1] = '\0';