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42 lines
802 B
42 lines
802 B
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mod ffi;
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#[cfg(test)]
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mod tests {
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#[test]
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fn raw_trampoline()
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{
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use std::ffi::c_void;
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let size: usize = 100;
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let output = {
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let mut size: usize = size;
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extern "C" fn callback(ptr: *mut c_void, data: *mut c_void)
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{
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let size = unsafe {&mut *(data as *mut usize)};
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let slice = unsafe {
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std::ptr::write_bytes(ptr, 0, *size);
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std::slice::from_raw_parts_mut(ptr as *mut u8, *size)
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};
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println!("From callback! Size is {}", slice.len());
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for (i, x) in (0..).zip(slice.iter_mut())
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{
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*x = i as u8;
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}
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*size = slice.iter().map(|&x| x as usize).sum::<usize>();
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}
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unsafe {
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super::ffi::alloca_trampoline(size, callback, &mut size as *mut usize as *mut _);
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}
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size
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};
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assert_eq!(output, (0..size).sum::<usize>());
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}
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}
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