Am 02.01.2006 um 04:43 schrieb Vlad Seryakov:
Tried it, nsd started crashing and i am guessing that the problem is combination of aio_write and mmap. When is start spooling, i just submit aio_write and return immediately, so there are a lot of quick aio_write calls. By the time i reach mmap, it looks like it's always ahead of actual writing, so even when i am trying to check aio_error/aio_fsync in the NsGetRequest, i still get SIGBUS/SIGSEGV when i access reqPtr- >content, looks like mmap and aio_write are out of sync. And there is no way to wait until all file buffers will be flushed, so manual separate thread implementation could be the only portable solution. Or i just do not understand aio_xxx things completely.
Hm... the idea is to mmap the file when all is read from the client. So you'd have to aio_write into the file until all is received, then at some point check the aio_status of the write (non-blocking) and when it's done, revert to mmap the file. I do not believe you can mix the aio_ with mmap. Zoran
