ee882e3a09
for FreeBSD project. Besides huge speed boost compared with socketpair-based pipes, this implementation also uses pagable kernel memory instead of mbufs. Significant differences to FreeBSD version: * uses uvm_loan() facility for direct write * async/SIGIO handling correct also for sync writer, async reader * limits settable via sysctl, amountpipekva and nbigpipes available via sysctl * pipes are unidirectional - this is enforced on file descriptor level for now only, the code would be updated to take advantage of it eventually * uses lockmgr(9)-based locks instead of home brew variant * scatter-gather write is handled correctly for direct write case, data is transferred by PIPE_DIRECT_CHUNK bytes maximum, to avoid running out of kva All FreeBSD/NetBSD specific code is within appropriate #ifdef, in preparation to feed changes back to FreeBSD tree. This pipe implementation is optional for now, add 'options NEW_PIPE' to your kernel config to use it. |
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| .. | ||
| defines | ||
| files | ||
| newvers.sh | ||
| newvers_stand.sh | ||
| osrelease.sh | ||
| param.c | ||