ArchiSys/TP/TP2/rendu/vmap.h

#ifndef DEF_VMAP_H
#define DEF_VMAP_H

#include <pthread.h>

#include "mmap.h"

typedef struct VMap {
    MMap* mmap;
    linkedList* pages;
    pthread_mutex_t lock;
    int index; // size already alloc'ed
} VMap;

typedef struct Memory { // List of VMaps
    struct Memory* next;
    VMap* vmap;
    int pid;
} Memory;

typedef struct PageMapInfo {
    int start;
    int key; // key for mmap
    int cursor; // Last allocation end
    int nb_allocs; // Free page if 0
    bool swapped;
} PageMapInfo;

/**
 * If PID is (-1), a blank VMap is created and will be assigned to the 1st pid requesting it
*/
Memory* memory_init(int pid);
VMap* vmap_init();

/**
 * Get page hosting a certain pointer
*/
PageMapInfo* vmap_get_page(VMap* vmap, void* ptr);

/**
 * From implemented memory to real memory
*/
void vmap_copy_to_memory(Memory* mem, void *src, void *dst, int size, int pid);

/**
 * From real memory to implemented memory
*/
void vmap_copy_from_memory(Memory* mem, void *src, void *dst, int size, int pid);

void* my_malloc(Memory* mem, int size, int pid);
void my_free(Memory* mem, void* ptr, int pid);
void my_copy(Memory* mem, void* src, void* dst, int size, int pid);

#endif