28 lines
681 B
C
28 lines
681 B
C
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#ifndef ARENA_INCLUDED
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#define ARENA_INCLUDED
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#include <stddef.h>
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#define SIZEOF(x) (ptrdiff_t)sizeof(x)
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#define NELEMS(a) (sizeof(a) / sizeof(*(a)))
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#define LEN(s) (NELEMS(s) - 1)
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#define KB(x) ((size_t)(x) << 10) // 1 KB = 1024 bytes
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#define MB(x) ((size_t)(x) << 20) // 1 MB = 1024 * 1024 bytes
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#define GB(x) ((size_t)(x) << 30) // 1 GB = 1024 * 1024 * 1024 bytes
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typedef struct {
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char* beg;
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char* end;
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} Arena;
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typedef enum {
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NOZERO = 0x1,
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SOFTFAIL = 0x2,
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} ArenaFlags;
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Arena arena_new(ptrdiff_t cap, int flags);
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char* arena_alloc(Arena* a, ptrdiff_t nb, ptrdiff_t align, ptrdiff_t count, int flags);
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#endif
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