This commit is contained in:
augustin64 2024-03-29 22:46:30 +01:00
parent 678b8c2808
commit 1edff7956e
4 changed files with 67 additions and 67 deletions

View File

@ -6,16 +6,16 @@
#include "linked_list.h"
struct linkedList* createLinkedList() {
struct linkedList *list = (struct linkedList*)malloc(sizeof(struct linkedList));
linkedList* createLinkedList() {
linkedList *list = (linkedList*)malloc(sizeof(linkedList));
list->head = NULL;
return list;
}
//insert link at the first location
void insertFirst(struct linkedList *list, int key, void *data) {
void insertFirst(linkedList *list, int key, void *data) {
//create a link
struct node *link = (struct node*) malloc(sizeof(struct node));
node *link = (node*) malloc(sizeof(node));
link->key = key;
link->data = data;
@ -28,13 +28,13 @@ void insertFirst(struct linkedList *list, int key, void *data) {
}
//delete first item
struct node* deleteFirst(struct linkedList *list) {
node* deleteFirst(linkedList *list) {
if (list->head == NULL) {
return NULL;
}
//save reference to first link
struct node *tempLink = list->head;
node *tempLink = list->head;
//mark next to first link as first
list->head = list->head->next;
@ -44,10 +44,10 @@ struct node* deleteFirst(struct linkedList *list) {
}
//find a link with given key
struct node* find(struct linkedList *list, int key) {
node* find(linkedList *list, int key) {
//start from the first link
struct node* current = list->head;
node* current = list->head;
//if list is empty
if(list->head == NULL) {
@ -71,11 +71,11 @@ struct node* find(struct linkedList *list, int key) {
}
//delete a link with given key
struct node* deleteElement(struct linkedList *list, int key) {
node* deleteElement(linkedList *list, int key) {
//start from the first link
struct node* current = list->head;
struct node* previous = NULL;
node* current = list->head;
node* previous = NULL;
//if list is empty
if(list->head == NULL) {
@ -109,13 +109,13 @@ struct node* deleteElement(struct linkedList *list, int key) {
}
//is list empty
bool isEmpty(struct linkedList *list) {
bool isEmpty(linkedList *list) {
return list->head == NULL;
}
int length(struct linkedList *list) {
int length(linkedList *list) {
int length = 0;
struct node *current;
node *current;
for(current = list->head; current != NULL; current = current->next) {
length++;

View File

@ -1,19 +1,19 @@
#include <stdbool.h>
struct node {
typedef struct node {
void *data;
int key;
struct node *next;
};
node *next;
} node;
struct linkedList {
struct node *head;
};
typedef struct linkedList {
node *head;
} linkedList;
struct linkedList* createLinkedList();
void insertFirst(struct linkedList *list, int key, void *data);
struct node* deleteFirst(struct linkedList *list);
struct node* find(struct linkedList *list, int key);
struct node* deleteElement(struct linkedList *list, int key);
bool isEmpty(struct linkedList *list);
int length(struct linkedList *list);
linkedList* createLinkedList();
void insertFirst(linkedList *list, int key, void *data);
node* deleteFirst(linkedList *list);
node* find(linkedList *list, int key);
node* deleteElement(linkedList *list, int key);
bool isEmpty(linkedList *list);
int length(linkedList *list);

View File

@ -7,17 +7,17 @@
#include "mmap.h"
struct MMap* mmap_init(){
struct MMap *mmap = malloc(sizeof(struct MMap));
MMap* mmap_init(){
MMap *mmap = malloc(sizeof(MMap));
mmap->size = 4096*100;
mmap->memory = malloc(mmap->size);
mmap->count = 0;
mmap->support = malloc(sizeof(struct PageInfo));
mmap->support = malloc(sizeof(PageInfo));
mmap->support->data = malloc(4096);
mmap->free_list = createLinkedList();
// insert 100 pages in the free list
for (int i=0; i < 100; i++) {
struct PageInfo *page = malloc(sizeof(struct PageInfo));
PageInfo *page = malloc(sizeof(PageInfo));
page->data = mmap->memory + i*4096;
page->key = i;
insertFirst(mmap->free_list, i, page);
@ -35,15 +35,15 @@ struct MMap* mmap_init(){
return mmap;
}
void mmap_clean(struct MMap *mmap) {
void mmap_clean(MMap *mmap) {
free(mmap->memory);
fclose(mmap->swap);
free(mmap);
remove("/tmp/myswap");
}
struct PageInfo* page_alloc(struct MMap *mmap) {
struct PageInfo *page = NULL;
PageInfo* page_alloc(MMap *mmap) {
PageInfo *page = NULL;
page = page_free(mmap);
if (page) {
insertFirst(mmap->alloc_list, page->key, page);
@ -52,24 +52,24 @@ struct PageInfo* page_alloc(struct MMap *mmap) {
return page;
}
struct PageInfo* page_free(struct MMap *mmap) {
struct PageInfo *page = NULL;
struct node *node = deleteFirst(mmap->free_list);
PageInfo* page_free(MMap *mmap) {
PageInfo *page = NULL;
node *node = deleteFirst(mmap->free_list);
if (node) {
page = node->data;
}
return page;
}
int check_page_free_list(struct MMap *mmap) {
int check_page_free_list(MMap *mmap) {
return length(mmap->free_list);
}
int check_page_alloc(struct MMap *mmap) {
int check_page_alloc(MMap *mmap) {
return length(mmap->alloc_list);
}
int move_to_swap(struct MMap *mmap, struct PageInfo *page) {
int move_to_swap(MMap *mmap, PageInfo *page) {
int key = -1;
fseek(mmap->swap, 0, SEEK_SET);
CHECK_FERROR(mmap->swap);
@ -97,7 +97,7 @@ int move_to_swap(struct MMap *mmap, struct PageInfo *page) {
return -1;
}
struct PageInfo* read_from_swap(struct MMap* mmap, struct PageInfo *page) {
PageInfo* read_from_swap(MMap* mmap, PageInfo *page) {
int key = -1;
fseek(mmap->swap, 0, SEEK_SET);
CHECK_FERROR(mmap->swap);
@ -127,16 +127,16 @@ struct PageInfo* read_from_swap(struct MMap* mmap, struct PageInfo *page) {
return NULL;
}
struct PageInfo* page_lookup(struct MMap* mmap, int key) {
struct node* data = find(mmap->alloc_list, key);
PageInfo* page_lookup(MMap* mmap, int key) {
node* data = find(mmap->alloc_list, key);
if (data) {
return data->data;
}
mmap->support->key = key;
struct PageInfo* page = read_from_swap(mmap, mmap->support);
PageInfo* page = read_from_swap(mmap, mmap->support);
if (page) { // Move one elem from mem to swap
struct PageInfo* swapped_page = deleteFirst(mmap->alloc_list)->data;
PageInfo* swapped_page = deleteFirst(mmap->alloc_list)->data;
move_to_swap(mmap, swapped_page);
memcpy(swapped_page->data, mmap->support->data, 4096);
@ -147,8 +147,8 @@ struct PageInfo* page_lookup(struct MMap* mmap, int key) {
return NULL;
}
void page_remove(struct MMap *mmap, int key) {
struct PageInfo* page = page_lookup(mmap, key);
void page_remove(MMap *mmap, int key) {
PageInfo* page = page_lookup(mmap, key);
if (!page)
return;
@ -156,11 +156,11 @@ void page_remove(struct MMap *mmap, int key) {
mmap->count--;
}
struct PageInfo *page_create(struct MMap *mmap, bool *moved_to_swap) {
PageInfo *page_create(MMap *mmap, bool *moved_to_swap) {
if (mmap->count >= 200)
return NULL;
struct PageInfo* page = page_alloc(mmap);
PageInfo* page = page_alloc(mmap);
*moved_to_swap = false;
if (page)

View File

@ -3,29 +3,29 @@
#include "linked_list.h"
struct MMap {
typedef struct MMap {
void *memory;
int size;
int count;
struct PageInfo *support;
struct linkedList *free_list;
struct linkedList *alloc_list;
PageInfo *support;
linkedList *free_list;
linkedList *alloc_list;
FILE *swap;
};
} MMap;
struct PageInfo {
typedef struct PageInfo {
int key;
void *data;
};
} PageInfo;
struct MMap* mmap_init();
void mmap_clean(struct MMap *mmap);
struct PageInfo* page_alloc(struct MMap *mmap);
struct PageInfo* page_free(struct MMap *mmap);
int check_page_free_list(struct MMap *mmap);
int check_page_alloc(struct MMap *mmap);
int move_to_swap(struct MMap *mmap, struct PageInfo *page);
struct PageInfo* read_from_swap(struct MMap* mmap, struct PageInfo *page);
struct PageInfo *page_lookup(struct MMap *mmap, int key);
void page_remove(struct MMap *mmap, int key);
struct PageInfo *page_create(struct MMap *mmap, bool *moved_to_swap);
MMap* mmap_init();
void mmap_clean(MMap *mmap);
PageInfo* page_alloc(MMap *mmap);
PageInfo* page_free(MMap *mmap);
int check_page_free_list(MMap *mmap);
int check_page_alloc(MMap *mmap);
int move_to_swap(MMap *mmap, PageInfo *page);
PageInfo* read_from_swap(MMap* mmap, PageInfo *page);
PageInfo *page_lookup(MMap *mmap, int key);
void page_remove(MMap *mmap, int key);
PageInfo *page_create(MMap *mmap, bool *moved_to_swap);