Function myalloc

src/myalloc.c:93–214

int alloced = 0;

void * myalloc(size_t size){
	struct mempage *newpage, *page;
	unsigned pagesize;
	unsigned i=0, j, k=0;
	int p;


	alloced++;
	if(!mem_init)init_mem();
	for(p = nomem; ; ) {
		if(!p){
#if DEBUGLEVEL > 2
fprintf(stderr, "Page is too large (%u), requesting malloc instead\n", size);
fflush(stderr);
#endif
			return malloc(size);
		}
		p--;
		if(size<memsizes[p]){
			break;
		}
	}

	if(p == p64k){
#if DEBUGLEVEL > 2
fprintf(stderr, "Page will p64k\n");
fflush(stderr);
#endif
		return myalloc64k();
	}

	pagesize = memsizes[p];
#if DEBUGLEVEL > 2
fprintf(stderr, "Calculated pagesize: %u\n", pagesize);
fflush(stderr);
#endif
	pthread_mutex_lock(&mem_mutex);
	newpage = pages[p];
	if(newpage && newpage->usable){
#if DEBUGLEVEL > 2
fprintf(stderr, "Useful page found: %X,", newpage);
fflush(stderr);
#endif
		for(j=0; j<32; j++){
			register unsigned c = newpage->bitmap[j];
			if(c){
				for(k=0; ;k++)if(c & (1<<k))break;
				i = (j<<11) + (k<<8);
#if DEBUGLEVEL > 2
fprintf(stderr, "region: %X, offset %u, byte %u, %u, %u\n", newpage->data + i, i, j, k, newpage->bitmap[j]);
fflush(stderr);
#endif                  
				break;
			}
		}
	}
	else{
		if(!(newpage = (struct mempage *)malloc(sizeof(struct mempage)))){