[목표]
mmap 구현을 해봅니다.
발표자료를 만듭니다.
13주차 퀴즈 오답 노트를 작성합니다.
10:00 ~ 12:00
어제 develop5에 merge한 것을 내가 작성한 코드에 맞게 merge했습니다.
12:00 ~ 13:00
식사를 했습니다.
13:30 ~ 14:30
어제 합친 develop5에 대해 pull을 당겨왔고, 내 코드만 복구하여 make check를 돌려보았다. 놀랍게도 9개의 테스트 케이스가 추가로 통과했다. 뭔가 다른 부분이 복구되면서 개선이 된것 같다.
pass tests/userprog/args-none
pass tests/userprog/args-single
pass tests/userprog/args-multiple
pass tests/userprog/args-many
pass tests/userprog/args-dbl-space
pass tests/userprog/halt
pass tests/userprog/exit
pass tests/userprog/create-normal
pass tests/userprog/create-empty
pass tests/userprog/create-null
pass tests/userprog/create-bad-ptr
pass tests/userprog/create-long
pass tests/userprog/create-exists
pass tests/userprog/create-bound
pass tests/userprog/open-normal
pass tests/userprog/open-missing
pass tests/userprog/open-boundary
pass tests/userprog/open-empty
pass tests/userprog/open-null
pass tests/userprog/open-bad-ptr
pass tests/userprog/open-twice
pass tests/userprog/close-normal
pass tests/userprog/close-twice
pass tests/userprog/close-bad-fd
pass tests/userprog/read-normal
pass tests/userprog/read-bad-ptr
pass tests/userprog/read-boundary
pass tests/userprog/read-zero
pass tests/userprog/read-stdout
pass tests/userprog/read-bad-fd
pass tests/userprog/write-normal
pass tests/userprog/write-bad-ptr
pass tests/userprog/write-boundary
pass tests/userprog/write-zero
pass tests/userprog/write-stdin
pass tests/userprog/write-bad-fd
pass tests/userprog/fork-once
pass tests/userprog/fork-multiple
pass tests/userprog/fork-recursive
pass tests/userprog/fork-read
pass tests/userprog/fork-close
pass tests/userprog/fork-boundary
pass tests/userprog/exec-once
pass tests/userprog/exec-arg
pass tests/userprog/exec-boundary
pass tests/userprog/exec-missing
pass tests/userprog/exec-bad-ptr
pass tests/userprog/exec-read
pass tests/userprog/wait-simple
pass tests/userprog/wait-twice
pass tests/userprog/wait-killed
pass tests/userprog/wait-bad-pid
pass tests/userprog/multi-recurse
pass tests/userprog/multi-child-fd
pass tests/userprog/rox-simple
pass tests/userprog/rox-child
pass tests/userprog/rox-multichild
pass tests/userprog/bad-read
pass tests/userprog/bad-write
pass tests/userprog/bad-read2
pass tests/userprog/bad-write2
pass tests/userprog/bad-jump
pass tests/userprog/bad-jump2
pass tests/vm/pt-grow-stack
pass tests/vm/pt-grow-bad
pass tests/vm/pt-big-stk-obj
pass tests/vm/pt-bad-addr
pass tests/vm/pt-bad-read
pass tests/vm/pt-write-code
FAIL tests/vm/pt-write-code2
FAIL tests/vm/pt-grow-stk-sc
pass tests/vm/page-linear
pass tests/vm/page-parallel
pass tests/vm/page-merge-seq
pass tests/vm/page-merge-par
FAIL tests/vm/page-merge-stk
FAIL tests/vm/page-merge-mm
pass tests/vm/page-shuffle
FAIL tests/vm/mmap-read
FAIL tests/vm/mmap-close
FAIL tests/vm/mmap-unmap
FAIL tests/vm/mmap-overlap
FAIL tests/vm/mmap-twice
FAIL tests/vm/mmap-write
FAIL tests/vm/mmap-ro
FAIL tests/vm/mmap-exit
FAIL tests/vm/mmap-shuffle
pass tests/vm/mmap-bad-fd
FAIL tests/vm/mmap-clean
FAIL tests/vm/mmap-inherit
FAIL tests/vm/mmap-misalign
FAIL tests/vm/mmap-null
FAIL tests/vm/mmap-over-code
FAIL tests/vm/mmap-over-data
FAIL tests/vm/mmap-over-stk
FAIL tests/vm/mmap-remove
pass tests/vm/mmap-zero
pass tests/vm/mmap-bad-fd2
pass tests/vm/mmap-bad-fd3
pass tests/vm/mmap-zero-len
FAIL tests/vm/mmap-off
FAIL tests/vm/mmap-bad-off
FAIL tests/vm/mmap-kernel
FAIL tests/vm/lazy-file
pass tests/vm/lazy-anon
FAIL tests/vm/swap-file
FAIL tests/vm/swap-anon
FAIL tests/vm/swap-iter
pass tests/vm/swap-fork
pass tests/filesys/base/lg-create
pass tests/filesys/base/lg-full
pass tests/filesys/base/lg-random
pass tests/filesys/base/lg-seq-block
pass tests/filesys/base/lg-seq-random
pass tests/filesys/base/sm-create
pass tests/filesys/base/sm-full
pass tests/filesys/base/sm-random
pass tests/filesys/base/sm-seq-block
pass tests/filesys/base/sm-seq-random
pass tests/filesys/base/syn-read
pass tests/filesys/base/syn-remove
pass tests/filesys/base/syn-write
pass tests/threads/alarm-single
pass tests/threads/alarm-multiple
pass tests/threads/alarm-simultaneous
pass tests/threads/alarm-priority
pass tests/threads/alarm-zero
pass tests/threads/alarm-negative
pass tests/threads/priority-change
pass tests/threads/priority-donate-one
pass tests/threads/priority-donate-multiple
pass tests/threads/priority-donate-multiple2
pass tests/threads/priority-donate-nest
pass tests/threads/priority-donate-sema
pass tests/threads/priority-donate-lower
pass tests/threads/priority-fifo
pass tests/threads/priority-preempt
pass tests/threads/priority-sema
pass tests/threads/priority-condvar
pass tests/threads/priority-donate-chain
FAIL tests/vm/cow/cow-simple
29 of 141 tests failed.14:30 ~ 15:50
어제 쓴 TIL에 대해 정리해보고 깃허브를 어떻게 사용하는지에 대해 생각을 해보았습니다. 솔직히 정리할게 많지만 다음주 중에 정리해보도록 하고, 지금은 mmap에 집중하여 테스트 케이스를 통과하는데에 집중해보겠습니다.
15:50 ~ 18:00
mmap를 기윤님 코드를 보면서 이해를 하고, 작성해보았습니다. 어제 작성을 해보았지만, 잘 작동하지 않아서 수정을 해야될 것 같습니다.
vm/file.c
do_mmap
mmap을 수행하는 주요 코드입니다. 이번 mmap은 process.c에 있는 load_segment 함수를 참고하여 작성하면 좋습니다.
/* Do the mmap */
// mmap 관련 기능입니다.
void *
do_mmap (void *addr, size_t length, int writable,
struct file *file, off_t offset) {
off_t file_ofs;
//printf("addr: %d, length: %d, writable:%d, file: %d, file_ofs: %d\n", addr, length, writable, file, file_ofs);
void *backup_addr = addr;
addr = pg_round_down(addr);
off_t total_len = file_length(file);
//printf("total_len: %d\n",total_len);
uint32_t read_bytes = total_len - offset;
uint32_t zero_bytes = ROUND_UP(read_bytes, PGSIZE) - read_bytes;
off_t ofs = offset;
uint8_t * upage = addr;
while (read_bytes > 0 || zero_bytes > 0){
size_t page_read_bytes = read_bytes < PGSIZE ? read_bytes : PGSIZE;
size_t page_zero_bytes = PGSIZE - page_read_bytes;
struct mmap_file *mmap = calloc(1, sizeof(struct mmap_file));
mmap -> addr = addr;
// mmap -> length = length;
mmap -> writable = writable;
mmap -> file = file;
mmap -> ofs = ofs;
mmap -> read_bytes = page_read_bytes;
mmap -> zero_bytes = page_zero_bytes;
if(!vm_alloc_page_with_initializer(VM_FILE, addr, writable, lazy_load_mmap, mmap)) {
return false;
}
// vm_alloc_page()
read_bytes -= page_read_bytes;
zero_bytes -= page_zero_bytes;
upage += PGSIZE;
/* file_read를 하지 않기 때문에 수동으로 ofs을 이동시켜줘야 한다. */
ofs += page_read_bytes;
}
return backup_addr;
}물론 위의 mmap구조체를 쓰기 위해서는 상단에 해당 구조체를 선언해줘야합니다.
struct mmap_file {
int mapid;
struct file *file;
void *addr;
size_t length;
int writable;
struct list_elem elem;
off_t ofs;
uint32_t read_bytes;
uint32_t zero_bytes;
};lazy_load_mmap
그러면 lazy_load_mmap이라는 lazy 페이지를 mmap하는 코드가 필요하게 됩니다. process.c의 lazy_load_segment를 참고하여 다음과 같이 만들어주면 됩니다.
// mmap에서 lazt페이지를 로드한다.
static bool
lazy_load_mmap (struct page *page, void *aux) {
// printf("mmap lazy load\n");
uint8_t* upage = page->va;
uint8_t* kpage = page->frame->kva;
struct mmap_file* mmap = (struct mmap_file*)aux;
struct file* file = mmap -> file;
off_t ofs = mmap -> ofs;
size_t page_read_bytes = mmap -> read_bytes;
size_t page_zero_bytes = mmap -> zero_bytes;
ASSERT ((page_read_bytes + page_zero_bytes) % PGSIZE == 0);
ASSERT (pg_ofs (upage) == 0);
ASSERT (ofs % PGSIZE == 0);
/* Do calculate how to fill this page.
* We will read PAGE_READ_BYTES bytes from FILE
* and zero the final PAGE_ZERO_BYTES bytes. */
/* Load this page. */
if (file_read_at (file, kpage, page_read_bytes, ofs) != (int) page_read_bytes) {
return false;
}
memset (kpage + page_read_bytes, 0, page_zero_bytes);
file_close(file);
free(aux);
return true;
}do_mmap
그럼 mumap을 구현해봅니다.
/* Do the munmap */
// munamp 관련 기능입니다.
void
do_munmap (void *addr) {
addr = pg_round_down(addr);
struct page* munmap = spt_find_page(&thread_current()->spt, addr);
if (munmap == NULL) {
return;
}
struct list* mapped_pages = munmap -> mmaped_list;
if(mapped_pages == NULL) {
return;
}
struct list_elem* mapped_page_elem;
struct page* tmp_page;
while (!list_empty(mapped_pages)) {
mapped_page_elem = list_pop_front(mapped_pages);
tmp_page = list_entry(mapped_page_elem, struct page, mmaped_elem);
vm_dealloc_page(tmp_page);
}
free(mapped_pages);
}
이렇게 하면 될줄 알았는데, 테스트 케이스를 실행해서 하나도 통과안해서 테스트 케이스를 확인을 해봤더니, syscall을 따로 구현해줘야했다.
syscall.c
SYS_MMAP 과 SYS_MUNMAP
void *sys_mmap(void *addr, size_t length, int writable, int fd, off_t offset);
void munmap(void *addr);
case SYS_MMAP:
{
void *addr = (void *)f->R.rdi;
size_t length = (size_t)f->R.rsi;
int writable = (int)f->R.rdx;
int fd = (int)f->R.r10;
off_t offset = (off_t)f->R.r8;
if(is_kernel_vaddr(addr) || is_kernel_vaddr(addr + length))
break;
f->R.rax = sys_mmap(addr, length, writable, fd, offset);
break;
}
case SYS_MUNMAP:
{
void *addr = (void *)f->R.rdi;
if(is_kernel_vaddr(addr))
break;
sys_munmap(addr);
break;
}sys_mmap 와 sys_munmap
밑에 추가적인 함수 구현은 밑에 작성했습니다.
void *sys_mmap(void *addr, size_t length, int writable, int fd, off_t offset) {
if (fd < 0 || fd >= MAX_FD || thread_current()->fd_table[fd] == NULL)
return NULL;
struct file *file = thread_current()->fd_table[fd];
if (file == NULL)
return NULL;
return do_mmap(addr, length, writable, file, offset);
}
void sys_munmap(void *addr) {
return do_munmap(addr);
}
18:00 ~ 19:00
식사를 했습니다.
19:00 ~ 22:00
시스템 콜을 구현하고, mmap가 정상적으로 되지 않아서 여러 수정을 거졌습니다. 시스템 콜에서 정의가 이상해지는 문제가 있어서 다음과 같은 프로토타입을 선언하여 사용했습니다.
void *sys_mmap(void *addr, size_t length, int writable, int fd, off_t offset);
void munmap(void *addr);mmap 인자에 다음과 같이 추가했습니다.
mmap -> read_bytes = page_read_bytes;
mmap -> zero_bytes = page_zero_bytes;그래서 mmap-read는 되는데, 다른 테스트 케이스가 안되서 디버깅 해봐야합니다.
pass tests/userprog/args-none
pass tests/userprog/args-single
pass tests/userprog/args-multiple
pass tests/userprog/args-many
pass tests/userprog/args-dbl-space
pass tests/userprog/halt
pass tests/userprog/exit
pass tests/userprog/create-normal
pass tests/userprog/create-empty
pass tests/userprog/create-null
pass tests/userprog/create-bad-ptr
pass tests/userprog/create-long
pass tests/userprog/create-exists
pass tests/userprog/create-bound
pass tests/userprog/open-normal
pass tests/userprog/open-missing
pass tests/userprog/open-boundary
pass tests/userprog/open-empty
pass tests/userprog/open-null
pass tests/userprog/open-bad-ptr
pass tests/userprog/open-twice
pass tests/userprog/close-normal
pass tests/userprog/close-twice
pass tests/userprog/close-bad-fd
pass tests/userprog/read-normal
pass tests/userprog/read-bad-ptr
pass tests/userprog/read-boundary
pass tests/userprog/read-zero
pass tests/userprog/read-stdout
pass tests/userprog/read-bad-fd
pass tests/userprog/write-normal
pass tests/userprog/write-bad-ptr
pass tests/userprog/write-boundary
pass tests/userprog/write-zero
pass tests/userprog/write-stdin
pass tests/userprog/write-bad-fd
pass tests/userprog/fork-once
pass tests/userprog/fork-multiple
pass tests/userprog/fork-recursive
pass tests/userprog/fork-read
pass tests/userprog/fork-close
pass tests/userprog/fork-boundary
pass tests/userprog/exec-once
pass tests/userprog/exec-arg
pass tests/userprog/exec-boundary
pass tests/userprog/exec-missing
pass tests/userprog/exec-bad-ptr
pass tests/userprog/exec-read
pass tests/userprog/wait-simple
pass tests/userprog/wait-twice
pass tests/userprog/wait-killed
pass tests/userprog/wait-bad-pid
FAIL tests/userprog/multi-recurse
pass tests/userprog/multi-child-fd
pass tests/userprog/rox-simple
pass tests/userprog/rox-child
pass tests/userprog/rox-multichild
pass tests/userprog/bad-read
pass tests/userprog/bad-write
pass tests/userprog/bad-read2
pass tests/userprog/bad-write2
pass tests/userprog/bad-jump
pass tests/userprog/bad-jump2
pass tests/vm/pt-grow-stack
pass tests/vm/pt-grow-bad
pass tests/vm/pt-big-stk-obj
pass tests/vm/pt-bad-addr
pass tests/vm/pt-bad-read
pass tests/vm/pt-write-code
FAIL tests/vm/pt-write-code2
FAIL tests/vm/pt-grow-stk-sc
pass tests/vm/page-linear
pass tests/vm/page-parallel
pass tests/vm/page-merge-seq
pass tests/vm/page-merge-par
FAIL tests/vm/page-merge-stk
FAIL tests/vm/page-merge-mm
pass tests/vm/page-shuffle
pass tests/vm/mmap-read
FAIL tests/vm/mmap-close
pass tests/vm/mmap-unmap
FAIL tests/vm/mmap-overlap
pass tests/vm/mmap-twice
FAIL tests/vm/mmap-write
FAIL tests/vm/mmap-ro
FAIL tests/vm/mmap-exit
FAIL tests/vm/mmap-shuffle
pass tests/vm/mmap-bad-fd
FAIL tests/vm/mmap-clean
FAIL tests/vm/mmap-inherit
FAIL tests/vm/mmap-misalign
pass tests/vm/mmap-null
pass tests/vm/mmap-over-code
pass tests/vm/mmap-over-data
pass tests/vm/mmap-over-stk
FAIL tests/vm/mmap-remove
pass tests/vm/mmap-zero
pass tests/vm/mmap-bad-fd2
pass tests/vm/mmap-bad-fd3
FAIL tests/vm/mmap-zero-len
FAIL tests/vm/mmap-off
pass tests/vm/mmap-bad-off
FAIL tests/vm/mmap-kernel
FAIL tests/vm/lazy-file
pass tests/vm/lazy-anon
FAIL tests/vm/swap-file
FAIL tests/vm/swap-anon
FAIL tests/vm/swap-iter
pass tests/vm/swap-fork
pass tests/filesys/base/lg-create
pass tests/filesys/base/lg-full
pass tests/filesys/base/lg-random
pass tests/filesys/base/lg-seq-block
pass tests/filesys/base/lg-seq-random
pass tests/filesys/base/sm-create
pass tests/filesys/base/sm-full
pass tests/filesys/base/sm-random
pass tests/filesys/base/sm-seq-block
pass tests/filesys/base/sm-seq-random
pass tests/filesys/base/syn-read
pass tests/filesys/base/syn-remove
pass tests/filesys/base/syn-write
pass tests/threads/alarm-single
pass tests/threads/alarm-multiple
pass tests/threads/alarm-simultaneous
pass tests/threads/alarm-priority
pass tests/threads/alarm-zero
pass tests/threads/alarm-negative
pass tests/threads/priority-change
pass tests/threads/priority-donate-one
pass tests/threads/priority-donate-multiple
pass tests/threads/priority-donate-multiple2
pass tests/threads/priority-donate-nest
pass tests/threads/priority-donate-sema
pass tests/threads/priority-donate-lower
pass tests/threads/priority-fifo
pass tests/threads/priority-preempt
pass tests/threads/priority-sema
pass tests/threads/priority-condvar
pass tests/threads/priority-donate-chain
FAIL tests/vm/cow/cow-simple
23 of 141 tests failed.권호형 딸깍으로 고쳐줬다.
mmap를 할 때, 파일을 열어서 확인후 닫아버려서 file을 mmap에 넘기지 못하는 문제가 있어서 file을 다시 열어서 사용할 수 있게 했다.
sys_mmap
void *sys_mmap(void *addr, size_t length, int writable, int fd, off_t offset) {
if (fd < 0 || fd >= MAX_FD || thread_current()->fd_table[fd] == NULL)
return NULL;
struct file *file = thread_current()->fd_table[fd];
if (file == NULL)
return NULL;
file = file_reopen(file);
return do_mmap(addr, length, writable, file, offset);
}
void sys_munmap(void *addr) {
return do_munmap(addr);
}pass tests/userprog/args-none
pass tests/userprog/args-single
pass tests/userprog/args-multiple
pass tests/userprog/args-many
pass tests/userprog/args-dbl-space
pass tests/userprog/halt
pass tests/userprog/exit
pass tests/userprog/create-normal
pass tests/userprog/create-empty
pass tests/userprog/create-null
pass tests/userprog/create-bad-ptr
pass tests/userprog/create-long
pass tests/userprog/create-exists
pass tests/userprog/create-bound
pass tests/userprog/open-normal
pass tests/userprog/open-missing
pass tests/userprog/open-boundary
pass tests/userprog/open-empty
pass tests/userprog/open-null
pass tests/userprog/open-bad-ptr
pass tests/userprog/open-twice
pass tests/userprog/close-normal
pass tests/userprog/close-twice
pass tests/userprog/close-bad-fd
pass tests/userprog/read-normal
pass tests/userprog/read-bad-ptr
pass tests/userprog/read-boundary
pass tests/userprog/read-zero
pass tests/userprog/read-stdout
pass tests/userprog/read-bad-fd
pass tests/userprog/write-normal
pass tests/userprog/write-bad-ptr
pass tests/userprog/write-boundary
pass tests/userprog/write-zero
pass tests/userprog/write-stdin
pass tests/userprog/write-bad-fd
pass tests/userprog/fork-once
pass tests/userprog/fork-multiple
pass tests/userprog/fork-recursive
pass tests/userprog/fork-read
pass tests/userprog/fork-close
pass tests/userprog/fork-boundary
pass tests/userprog/exec-once
pass tests/userprog/exec-arg
pass tests/userprog/exec-boundary
pass tests/userprog/exec-missing
pass tests/userprog/exec-bad-ptr
pass tests/userprog/exec-read
pass tests/userprog/wait-simple
pass tests/userprog/wait-twice
pass tests/userprog/wait-killed
pass tests/userprog/wait-bad-pid
pass tests/userprog/multi-recurse
pass tests/userprog/multi-child-fd
pass tests/userprog/rox-simple
pass tests/userprog/rox-child
pass tests/userprog/rox-multichild
pass tests/userprog/bad-read
pass tests/userprog/bad-write
pass tests/userprog/bad-read2
pass tests/userprog/bad-write2
pass tests/userprog/bad-jump
pass tests/userprog/bad-jump2
pass tests/vm/pt-grow-stack
pass tests/vm/pt-grow-bad
pass tests/vm/pt-big-stk-obj
pass tests/vm/pt-bad-addr
pass tests/vm/pt-bad-read
pass tests/vm/pt-write-code
FAIL tests/vm/pt-write-code2
FAIL tests/vm/pt-grow-stk-sc
pass tests/vm/page-linear
pass tests/vm/page-parallel
pass tests/vm/page-merge-seq
pass tests/vm/page-merge-par
FAIL tests/vm/page-merge-stk
FAIL tests/vm/page-merge-mm
pass tests/vm/page-shuffle
pass tests/vm/mmap-read
pass tests/vm/mmap-close
pass tests/vm/mmap-unmap
FAIL tests/vm/mmap-overlap
pass tests/vm/mmap-twice
FAIL tests/vm/mmap-write
FAIL tests/vm/mmap-ro
FAIL tests/vm/mmap-exit
FAIL tests/vm/mmap-shuffle
pass tests/vm/mmap-bad-fd
pass tests/vm/mmap-clean
pass tests/vm/mmap-inherit
FAIL tests/vm/mmap-misalign
pass tests/vm/mmap-null
pass tests/vm/mmap-over-code
pass tests/vm/mmap-over-data
pass tests/vm/mmap-over-stk
pass tests/vm/mmap-remove
pass tests/vm/mmap-zero
FAIL tests/vm/mmap-bad-fd2
FAIL tests/vm/mmap-bad-fd3
FAIL tests/vm/mmap-zero-len
FAIL tests/vm/mmap-off
pass tests/vm/mmap-bad-off
FAIL tests/vm/mmap-kernel
FAIL tests/vm/lazy-file
pass tests/vm/lazy-anon
FAIL tests/vm/swap-file
FAIL tests/vm/swap-anon
FAIL tests/vm/swap-iter
pass tests/vm/swap-fork
pass tests/filesys/base/lg-create
pass tests/filesys/base/lg-full
pass tests/filesys/base/lg-random
pass tests/filesys/base/lg-seq-block
pass tests/filesys/base/lg-seq-random
pass tests/filesys/base/sm-create
pass tests/filesys/base/sm-full
pass tests/filesys/base/sm-random
pass tests/filesys/base/sm-seq-block
pass tests/filesys/base/sm-seq-random
pass tests/filesys/base/syn-read
pass tests/filesys/base/syn-remove
pass tests/filesys/base/syn-write
pass tests/threads/alarm-single
pass tests/threads/alarm-multiple
pass tests/threads/alarm-simultaneous
pass tests/threads/alarm-priority
pass tests/threads/alarm-zero
pass tests/threads/alarm-negative
pass tests/threads/priority-change
pass tests/threads/priority-donate-one
pass tests/threads/priority-donate-multiple
pass tests/threads/priority-donate-multiple2
pass tests/threads/priority-donate-nest
pass tests/threads/priority-donate-sema
pass tests/threads/priority-donate-lower
pass tests/threads/priority-fifo
pass tests/threads/priority-preempt
pass tests/threads/priority-sema
pass tests/threads/priority-condvar
pass tests/threads/priority-donate-chain
FAIL tests/vm/cow/cow-simple
20 of 141 tests failed.추가적인 조언으로 munmap에서 pml4_isdirty로 수정사항을 파일에 적고 종료를 해야한다고 한다.
그래서 mmap-exit을 트러블 슈팅하려고 한다.
→ pml4_is_dirty만 추가하면 되는줄 알았는데, 잘안됐습니다. 해결이 안되고 inode값이 0보다 작게 나옵니다…
22:00 ~ 23:00
시간이 늦은 관계로 발표자료를 작성해보도록 하겠습니다.
두가지의 주제로 선정하였고, 어느정도의 흐름을 파악하고 있습니다.
1. pintos에서 page fault는 어떻게 이루어지는가?
2. 스레싱이란 무엇인가?
23:00 ~ 24:00
라면 식사를 하고 왔다. 오늘은 오랫동안 발표자료 만들고, pintos를 고쳐볼 예정입니다.
00:00 ~ 04:20
pintos에서의 page fault에 대해서 알아보겠습니다.
이해하고, 발표자료 작성까지 완료했습니다. 생각보다 오래걸렸습니다…
모든걸 기록하며 성장하고 싶은 개발자입니다. 현재 크래프톤 정글 8기를 수료하고 구직활동 중입니다.