Feat: lab 4

kernel/include/kmalloc.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <stddef.h>
+
+#define KMALLOC_MAX_ALLOCATOR_SIZE 256
+
+typedef struct kmalloc_header {
+  size_t unit;
+  size_t left;
+  void *begin;
+  struct kmalloc_header *page_prev, *page_next;
+}__attribute__((packed)) kmalloc_header_t;
+
+typedef struct {
+  size_t left;
+  kmalloc_header_t *page_begin;
+} kmalloc_allocator_t;
+
+void init_mman_kmalloc();
+void *simple_alloc(size_t size);
+void *mman_alloc(size_t size);
+void mman_free(void *ptr);
+
+extern void *(*kmalloc)(size_t size);
+extern void (*kfree)(void *ptr);
+
+extern kmalloc_allocator_t mman_kmalloc_pool[KMALLOC_MAX_ALLOCATOR_SIZE + 1];