njvm/GC.c
2024-01-27 21:17:06 +01:00

100 lines
2.8 KiB
C

#ifndef GC
#define GC
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "stackslot.c"
#include "stack.c"
#include "bigint.h"
#include "instruktion.c"
#include "record.c"
#include "SDA.c"
typedef struct {
unsigned int freiZeiger;
unsigned int size;
unsigned char *data;
} *heapPartRef;
// SDA
struct sda sda;
// Stack
struct stack stack;
#define SIZE 100000
//Register
struct stack reg;
//heapPartRef primary;
//heapPartRef secondary;
//unsigned int heapSize;
//void initHeap(int size){
// heapSize = 2 * sizeof (unsigned int) + size;
// if ((primary = malloc(heapSize)) == NULL) perror("malloc");
// if ((secondary = malloc(heapSize)) == NULL) perror("malloc");
//}
//
//
//// nimmt obj und copier es in den secondary Speicher
//void copy(ObjRef obj){
// if(obj->brokenHeart == true) return;
// obj->brokenHeart = true;
// if (IS_PRIMITIVE(obj)){
// if(obj->size > secondary->size-secondary->freiZeiger) perror("Heap is to Small");
// obj->forward_pointer = memcpy((void *) secondary->data[secondary->freiZeiger], obj, obj->size);
// secondary->freiZeiger += obj->size;
// } else {
// if(sizeof(*obj) + (GET_ELEMENT_COUNT(obj) * sizeof(void *)) > secondary->size-secondary->freiZeiger) perror("Heap is to Small");
// GET_ELEMENT_COUNT(obj);
// obj->forward_pointer = memcpy((void *) secondary->data[secondary->freiZeiger], obj, sizeof(*obj) + (GET_ELEMENT_COUNT(obj) * sizeof(void *)));
// secondary->freiZeiger += sizeof(*obj) + (GET_ELEMENT_COUNT(obj) * sizeof(void *));
// for (int i = 0; i < GET_ELEMENT_COUNT(obj); ++i) {
// copy(getField(obj,i));
// }
// }
//}
//
//void runGC(){
// int rootSize = *sda.size + *reg.size + *stack.size + 4;
// ObjRef* rootObjs = malloc(sizeof(ObjRef) * rootSize);
// if(rootObjs == NULL) perror("malloc");
// int counter = 0;
// //Bip
// rootObjs[0] = bip.op1;
// rootObjs[counter++] = bip.op2;
// rootObjs[counter++] = bip.res;
// rootObjs[counter++] = bip.rem;
// //SDA
// for (int i = 0; i < *sda.size; ++i) {
// rootObjs[counter++] = sda.sda[i];
// }
// //REG
// for (int i = 0; i < *reg.size; ++i) {
// rootObjs[counter++] = reg.stack[i].u.objRef;
// }
// //STACK
// for (int i = 0; i < *stack.size; ++i) {
// rootObjs[counter++] = stack.stack[i].u.objRef;
// }
//
// for (int i = 0; i < rootSize; ++i) {
// if(rootObjs[i] == NULL) continue;
// copy(rootObjs[i]);
// }
// heapPartRef temp = primary;
// primary = secondary;
// secondary = temp;
//
//}
//
//void *alloc(size_t size){
// if(primary->size-primary->freiZeiger < size){
// runGC();
// }
// primary->freiZeiger += size;
// return (void *) primary->data[primary->freiZeiger - size];
//}
#endif