src/kernel/malloc.h


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#pragma once
#include <kernel/arch/generic.h>
#include <shared/mem.h>
#include <stddef.h>

/* This seems to be fine for now, and it means that i don't need to concern
 * myself with allocating contiguous pages for now, which is way easier to do
 * well. */
#define KMALLOC_MAX 2048

void mem_init(void *memtop);
void mem_reserve(void *addr, size_t len);
void mem_debugprint(void);

void kmalloc_debugprint(void); /* internal, called by mem_debugprint */

// allocates `pages` consecutive pages
void *page_alloc(size_t pages);
// zeroes the allocated pages
void *page_zalloc(size_t pages);

// frees `pages` consecutive pages starting from *first
void page_free(void *first, size_t pages);

void *kmalloc(size_t len, const char *desc);
void kfree(void *ptr);

// TODO calloc
static inline void *kzalloc(size_t len, const char *desc) {
	void *b = kmalloc(len, desc);
	memset(b, 0, len);
	return b;
}