vmalloc.h

Go to the documentation of this file.

#ifndef _KERNEL_MM_VMALLOC_H
#define _KERNEL_MM_VMALLOC_H
 
#include <stddef.h>
 
/**
 * @brief Maximum size of the virtual memory region for vmalloc.
 */
#define VMALLOC_SIZE (PAGE_SIZE * 512)
 
/**
 * @brief Alignment for each vmalloc allocation.
 */
#define VMALLOC_ALIGNMENT 16
 
/**
 * @brief Initializes the virtual memory allocator.
 * This should be called after frame allocator and paging are initialized.
 */
void vmalloc_init(void);
 
/**
 * @brief Allocates `size` bytes of virtual memory and returns a pointer to it.
 * The allocation is aligned to `VMALLOC_ALIGNMENT`. It panics if out of memory.
 */
void *vmalloc(size_t size);
void *vmalloc(size_t size);
 
/**
 * @brief Frees the virtual memory allocated at `addr`.
 * (TODO: stop using bump allocator)
 */
void vfree(void *addr);
 
#endif // _KERNEL_MM_VMALLOC_H