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Coro alignment #232

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Coro alignment #232

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10 changes: 9 additions & 1 deletion libs/coroutine/source/Coro.c
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Expand Up @@ -85,6 +85,14 @@ Coro *Coro_new(void)
return self;
}

// Returns a size that corresponds to `size` aligned on `alignment` bounds
static inline size_t aligned_size(size_t size, size_t alignment)
{
assert(alignment <= 0x8000);
size_t r = size + --alignment + 2;
return (r + 2 + alignment) & ~alignment;
}

#ifndef USE_FIBERS
void Coro_allocStackIfNeeded(Coro *self)
{
Expand Down Expand Up @@ -599,7 +607,7 @@ void Coro_setup(Coro *self, void *arg)
if (64 > (- sav[i] + (uintptr_t)&i))
break;
assert(i < sz);
sav[i] = stackend - sizeof(uintptr_t) - 128;
sav[i] = aligned_size(stackend - sizeof(uintptr_t) - 128, 16);
}
}

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