54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
#ifndef DEF_VMAP_H
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#define DEF_VMAP_H
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#include <pthread.h>
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#include "mmap.h"
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typedef struct VMap {
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MMap* mmap;
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linkedList* pages;
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pthread_mutex_t lock;
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int index; // size already alloc'ed
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} VMap;
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typedef struct Memory { // List of VMaps
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struct Memory* next;
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VMap* vmap;
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int pid;
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} Memory;
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typedef struct PageMapInfo {
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int start;
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int key; // key for mmap
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int cursor; // Last allocation end
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int nb_allocs; // Free page if 0
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bool swapped;
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} PageMapInfo;
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/**
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* If PID is (-1), a blank VMap is created and will be assigned to the 1st pid requesting it
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*/
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Memory* memory_init(int pid);
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VMap* vmap_init();
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/**
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* Get page hosting a certain pointer
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*/
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PageMapInfo* vmap_get_page(VMap* vmap, void* ptr);
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/**
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* From implemented memory to real memory
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*/
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void vmap_copy_to_memory(Memory* mem, void *src, void *dst, int size, int pid);
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/**
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* From real memory to implemented memory
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*/
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void vmap_copy_from_memory(Memory* mem, void *src, void *dst, int size, int pid);
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void* my_malloc(Memory* mem, int size, int pid);
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void my_free(Memory* mem, void* ptr, int pid);
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void my_copy(Memory* mem, void* src, void* dst, int size, int pid);
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#endif |