On 9/6/07, 蹬三轮的 <tricycle@gmail.com> wrote:
According to the description of pool, it should be working like you said. But actually it is not the same. Hereby, there are two cases provided. I think you will find two totally different results between them.
Okay, I have found the problem. pool::alloc_size seems to be a least common multiple of sizeof(void*) and your chunk size. Assuming sizeof(void*) is 4, In the case of 1316, this comes to 1316. In the case of 1317, this comes to 5268, or 4 times the requested size which is what you are seeing. This seems incorrect. I have not tested this, but on line 183 of boost/pool/pool.hpp, change return details::pool::lcm<size_type>(requested_size, min_size); to: return std::max(requested_size + (min_size - 1) & ~(min_size - 1), min_size); This should fix your size problem while still keeping the size aligned on pointer-sized boundaries, which I believe was the original intention of the author. Does Stephen Cleary even monitor this list to comment? -- Cory Nelson