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authorJustus Winter <4winter@informatik.uni-hamburg.de>2014-11-23 18:11:30 +0100
committerJustus Winter <4winter@informatik.uni-hamburg.de>2014-11-23 18:11:30 +0100
commitb3fcdc50024b3837a76cd854d02a940dac2e5dc3 (patch)
treecd19784b3e8eda7fde8601f0fb2c15d60fb3aae1 /utils
parent25fe9cb62331d609b87b9d0b1db06d06ab825d16 (diff)
libpager: make the request queue more memory-efficient
Previously, `pager_demuxer' allocated a chunk of memory for the response message. But if memory gets scarce, the kernel will issue a large number of paging requests to free up memory. In such a situation, allocating memory is dangerous. Fix this by not allocating space for the response message, rather, use a chunk of the workers stack space. Also, we only handle the `notify' and `memory_object' protocol, which both only contain simple routines, we only need a `mig_response_header_t'. * libpager/demuxer.c (struct request): Remove `inp' and `outp'. (request_inp): New function. (pager_demuxer): Do not allocate memory for the response. (mig_reply_setup): New function. (worker_func): Adjust accordingly.
Diffstat (limited to 'utils')
0 files changed, 0 insertions, 0 deletions