tailix
/
libkernaux
mirror of https://github.com/tailix/libkernaux.git
1
0
Fork 0
Code Releases Activity

Use typedef in PFA

This commit is contained in:
Alex Kotov 2021-12-14 04:03:13 +05:00
parent 87bb83a91f
commit 05e8794bcb
Signed by: kotovalexarian
GPG Key ID: 553C0EBBEB5D5F08
2 changed files with 14 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
include/kernaux/pfa.h
View File

@ -11,31 +11,25 @@ extern "C" {
#define KERNAUX_PFA_PAGE_SIZE (4 * 1024) #define KERNAUX_PFA_PAGE_SIZE (4 * 1024)
#define KERNAUX_PFA_PAGES_COUNT_MAX (1024 * 1024) #define KERNAUX_PFA_PAGES_COUNT_MAX (1024 * 1024)
typedef struct KernAux_PFA *KernAux_PFA;
struct KernAux_PFA { struct KernAux_PFA {
bool pages[KERNAUX_PFA_PAGES_COUNT_MAX]; bool pages[KERNAUX_PFA_PAGES_COUNT_MAX];
}; };
void KernAux_PFA_initialize(struct KernAux_PFA *pfa) void KernAux_PFA_initialize(KernAux_PFA pfa)
__attribute__((nonnull)); __attribute__((nonnull));
void KernAux_PFA_mark_available( void KernAux_PFA_mark_available(KernAux_PFA pfa, size_t start, size_t end)
struct KernAux_PFA *pfa,
size_t start,
size_t end
)
__attribute__((nonnull)); __attribute__((nonnull));
void KernAux_PFA_mark_unavailable( void KernAux_PFA_mark_unavailable(KernAux_PFA pfa, size_t start, size_t end)
struct KernAux_PFA *pfa,
size_t start,
size_t end
)
__attribute__((nonnull)); __attribute__((nonnull));
size_t KernAux_PFA_alloc_page(struct KernAux_PFA *pfa) size_t KernAux_PFA_alloc_page(KernAux_PFA pfa)
__attribute__((nonnull)); __attribute__((nonnull));
void KernAux_PFA_free_page(struct KernAux_PFA *pfa, size_t page_addr) void KernAux_PFA_free_page(KernAux_PFA pfa, size_t page_addr)
__attribute__((nonnull)); __attribute__((nonnull));
#ifdef __cplusplus #ifdef __cplusplus

14
src/pfa.c
View File

@ -6,20 +6,20 @@
#include <kernaux/stdlib.h> #include <kernaux/stdlib.h>
static void KernAux_PFA_mark( static void KernAux_PFA_mark(
struct KernAux_PFA *pfa, KernAux_PFA pfa,
bool status, bool status,
size_t start, size_t start,
size_t end size_t end
) )
__attribute__((nonnull)); __attribute__((nonnull));
void KernAux_PFA_initialize(struct KernAux_PFA *const pfa) void KernAux_PFA_initialize(const KernAux_PFA pfa)
{ {
kernaux_memset(pfa->pages, false, sizeof(pfa->pages)); kernaux_memset(pfa->pages, false, sizeof(pfa->pages));
} }
void KernAux_PFA_mark_available( void KernAux_PFA_mark_available(
struct KernAux_PFA *const pfa, const KernAux_PFA pfa,
const size_t start, const size_t start,
const size_t end const size_t end
) { ) {
@ -27,7 +27,7 @@ void KernAux_PFA_mark_available(
} }
void KernAux_PFA_mark_unavailable( void KernAux_PFA_mark_unavailable(
struct KernAux_PFA *const pfa, const KernAux_PFA pfa,
const size_t start, const size_t start,
const size_t end const size_t end
) { ) {
@ -35,7 +35,7 @@ void KernAux_PFA_mark_unavailable(
} }
void KernAux_PFA_mark( void KernAux_PFA_mark(
struct KernAux_PFA *const pfa, const KernAux_PFA pfa,
const bool status, const bool status,
size_t start, size_t start,
size_t end size_t end
@ -61,7 +61,7 @@ void KernAux_PFA_mark(
} }
} }
size_t KernAux_PFA_alloc_page(struct KernAux_PFA *const pfa) size_t KernAux_PFA_alloc_page(const KernAux_PFA pfa)
{ {
// We start from 1 because 0 indicates failure. // We start from 1 because 0 indicates failure.
// It is not very usefull to alloc page at address 0; // It is not very usefull to alloc page at address 0;
@ -76,7 +76,7 @@ size_t KernAux_PFA_alloc_page(struct KernAux_PFA *const pfa)
return 0; return 0;
} }
void KernAux_PFA_free_page(struct KernAux_PFA *const pfa, size_t page_addr) void KernAux_PFA_free_page(const KernAux_PFA pfa, size_t page_addr)
{ {
if (page_addr % KERNAUX_PFA_PAGE_SIZE != 0) return; if (page_addr % KERNAUX_PFA_PAGE_SIZE != 0) return;