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37 lines
881 B
C
37 lines
881 B
C
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#ifndef KERNAUX_INCLUDED_PFA
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#define KERNAUX_INCLUDED_PFA
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#define KERNAUX_PFA_PAGE_SIZE (4 * 1024)
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#define KERNAUX_PFA_PAGES_COUNT_MAX (1024 * 1024)
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#define KERNAUX_PFA_FLAGS_SIZE (KERNAUX_PFA_PAGES_COUNT_MAX / 8)
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typedef struct KernAux_PFA *KernAux_PFA;
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struct KernAux_PFA {
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uint8_t flags[KERNAUX_PFA_FLAGS_SIZE];
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};
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void KernAux_PFA_initialize(KernAux_PFA pfa);
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bool KernAux_PFA_is_available(KernAux_PFA pfa, size_t page_addr);
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void KernAux_PFA_mark_available(KernAux_PFA pfa, size_t start, size_t end);
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void KernAux_PFA_mark_unavailable(KernAux_PFA pfa, size_t start, size_t end);
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size_t KernAux_PFA_alloc_pages(KernAux_PFA pfa, size_t mem_size);
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void KernAux_PFA_free_pages(KernAux_PFA pfa, size_t page_addr, size_t mem_size);
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#ifdef __cplusplus
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}
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#endif
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#endif
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