From f2c51bc81d2aa618b29ddbeaae5ac1c5308821f0 Mon Sep 17 00:00:00 2001 From: Alex Auvolat Date: Mon, 9 Feb 2015 17:39:41 +0100 Subject: Reorganize all. --- src/kernel/include/region.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 src/kernel/include/region.h (limited to 'src/kernel/include/region.h') diff --git a/src/kernel/include/region.h b/src/kernel/include/region.h new file mode 100644 index 0000000..1fef582 --- /dev/null +++ b/src/kernel/include/region.h @@ -0,0 +1,38 @@ +#pragma once + +// Kernel virtual memory region allocator + +// This is entirely thread-safe + +#include +#include + +struct region_info; +typedef void (*page_fault_handler_t)(pagedir_t *pd, struct region_info *r, void* addr); + +typedef struct region_info { + void* addr; + size_t size; + char* type; + page_fault_handler_t pf; +} region_info_t; + +void region_allocator_init(void* kernel_data_end); + +void* region_alloc(size_t size, char* type, page_fault_handler_t pf); // returns 0 on error +region_info_t *find_region(void* addr); +void region_free(void* addr); + +// some usefull PF handlers +// default_allocator_pf_handler : just allocates new frames on page faults +void default_allocator_pf_handler(pagedir_t *pd, struct region_info *r, void* addr); + +// some functions for freeing regions and frames +// region_free_unmap_free : deletes a region and frees all frames that were mapped in it +void region_free_unmap_free(void* addr); +// region_free_unmap : deletes a region and unmaps all frames that were mapped in it, without freeing them +void region_free_unmap(void* addr); + +void dbg_print_region_info(); + +/* vim: set ts=4 sw=4 tw=0 noet :*/ -- cgit v1.2.3