34 lines
507 B
C
34 lines
507 B
C
#include "assert.h"
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#include "malloc.h"
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struct arena {
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uint8_t * mem;
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uint32_t size;
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uint32_t ix;
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};
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static uint8_t arena_mem[0x100000];
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static struct arena arena = {
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.mem = arena_mem,
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.size = (sizeof (arena_mem)),
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.ix = 0,
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};
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void malloc_arena_reset()
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{
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arena.ix = 0;
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}
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void * malloc_arena(uint32_t size)
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{
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if (size == 0)
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return nullptr;
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assert((arena.ix & (~3)) == arena.ix);
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void * ptr = &arena.mem[arena.ix];
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size = (size + 3) & (~3);
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arena.ix += size;
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return ptr;
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}
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