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libkernaux/examples/memmap.c

40 lines
1.7 KiB
C

#include <kernaux/memmap.h>
#include <assert.h>
#include <stdbool.h>
#include <string.h>
#define SIZE_256MiB ( 256 * 1024 * 1024)
#define SIZE_512MiB ( 512 * 1024 * 1024)
#define SIZE_1GiB (1024 * 1024 * 1024)
KernAux_MemMap memmap;
int main()
{
KernAux_MemMap_init(memmap, SIZE_1GiB);
assert(KernAux_MemMap_add_entry(memmap, true, NULL, 0, SIZE_256MiB));
assert(KernAux_MemMap_add_entry(memmap, false, "foo", SIZE_256MiB, SIZE_256MiB));
assert(KernAux_MemMap_add_entry(memmap, true, "bar", SIZE_512MiB, SIZE_512MiB));
assert(KernAux_MemMap_finish(memmap));
// You can get entry by it's index:
assert( KernAux_MemMap_entry_by_index(memmap, 0)->is_available == true);
assert(strcmp(KernAux_MemMap_entry_by_index(memmap, 0)->tag, "") == 0);
assert( KernAux_MemMap_entry_by_index(memmap, 0)->start == 0);
assert( KernAux_MemMap_entry_by_index(memmap, 0)->size == SIZE_256MiB);
assert( KernAux_MemMap_entry_by_index(memmap, 0)->end == SIZE_256MiB - 1);
assert( KernAux_MemMap_entry_by_index(memmap, 0)->limit == SIZE_256MiB);
// You can get entry by it's start address:
assert( KernAux_MemMap_entry_by_start(memmap, SIZE_256MiB)->is_available == false);
assert(strcmp(KernAux_MemMap_entry_by_start(memmap, SIZE_256MiB)->tag, "foo") == 0);
assert( KernAux_MemMap_entry_by_start(memmap, SIZE_256MiB)->start == SIZE_256MiB);
assert( KernAux_MemMap_entry_by_start(memmap, SIZE_256MiB)->size == SIZE_256MiB);
assert( KernAux_MemMap_entry_by_start(memmap, SIZE_256MiB)->end == SIZE_512MiB - 1);
assert( KernAux_MemMap_entry_by_start(memmap, SIZE_256MiB)->limit == SIZE_512MiB);
return 0;
}