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libkernaux/include/kernaux/pfa.h

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#ifndef KERNAUX_INCLUDED_PFA
#define KERNAUX_INCLUDED_PFA 1
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#ifdef __cplusplus
extern "C" {
#endif
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#include <stdbool.h>
#include <stddef.h>
#define KERNAUX_PFA_PAGE_SIZE (4 * 1024)
#define KERNAUX_PFA_PAGES_COUNT_MAX (1024 * 1024)
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#define KernAux_PFA_alloc_page(pfa) \
(KernAux_PFA_alloc_pages((pfa), KERNAUX_PFA_PAGE_SIZE))
#define KernAux_PFA_free_page(pfa, page_addr) \
(KernAux_PFA_free_pages((pfa), (page_addr), KERNAUX_PFA_PAGE_SIZE))
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typedef struct KernAux_PFA *KernAux_PFA;
struct KernAux_PFA {
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bool pages[KERNAUX_PFA_PAGES_COUNT_MAX];
};
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void KernAux_PFA_initialize(KernAux_PFA pfa)
__attribute__((nonnull));
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bool KernAux_PFA_is_available(KernAux_PFA pfa, size_t page_addr)
__attribute__((nonnull));
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void KernAux_PFA_mark_available(KernAux_PFA pfa, size_t start, size_t end)
__attribute__((nonnull));
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void KernAux_PFA_mark_unavailable(KernAux_PFA pfa, size_t start, size_t end)
__attribute__((nonnull));
size_t KernAux_PFA_alloc_pages(KernAux_PFA pfa, size_t mem_size)
__attribute__((nonnull));
void KernAux_PFA_free_pages(KernAux_PFA pfa, size_t page_addr, size_t mem_size)
__attribute__((nonnull));
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#ifdef __cplusplus
}
#endif
#endif