aliguori
baf35cb902
Use signalfd() to work around signal/select race
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This patch introduces signalfd() to work around the signal/select race in
checking for AIO completions. For platforms that don't support signalfd(), we
emulate it with threads.
There was a long discussion about this approach. I don't believe there are any
fundamental problems with this approach and I believe eliminating the use of
signals is a good thing.
I've tested Windows and Linux using Windows and Linux guests. I've also checked
for disk IO performance regressions.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5187 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-10 15:45:19 +00:00
blueswir1
543952ca93
Add missing FreeBSD #include (Juergen Lock)
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5081 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-24 10:43:12 +00:00
blueswir1
128ab2ff50
Preliminary OpenBSD host support (based on OpenBSD patches by Todd T. Fries)
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5012 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-15 18:33:42 +00:00
blueswir1
414f0dab09
Use AIO only if host supports it (based on OpenBSD patches by Todd T. Fries)
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5010 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-15 18:20:52 +00:00
ths
2f7264888a
Add a parameter to disable host cache, by Laurent Vivier.
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4836 c046a42c-6fe2-441c-8c8c-71466251a162
2008-07-03 11:47:46 +00:00
bellard
bed5cc5207
Align file accesses with cache=off (O_DIRECT) (Kevin Wolf, Laurent Vivier)
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4599 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-28 09:51:09 +00:00
blueswir1
6dd2db52a9
Revert 4367
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4377 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-07 15:26:22 +00:00
blueswir1
adcbebaa40
Align file accesses with cache=off (Kevin Wolf, Laurent Vivier)
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4367 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-06 17:26:59 +00:00
bellard
01534fe901
restore original values for ai.aio_threads and ai.aio_num
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3896 c046a42c-6fe2-441c-8c8c-71466251a162
2008-01-06 18:53:07 +00:00
ths
985a03b0ce
Real SCSI device passthrough (v4), by Laurent Vivier.
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3851 c046a42c-6fe2-441c-8c8c-71466251a162
2007-12-24 16:10:43 +00:00
balrog
33f002714b
Add "cache" parameter to "-drive" (Laurent Vivier).
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3848 c046a42c-6fe2-441c-8c8c-71466251a162
2007-12-24 14:33:24 +00:00
ths
223d4670a0
Split block-raw.c into block-raw-posix.c and block-raw-win32.c, by
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Anthony Liguori.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3814 c046a42c-6fe2-441c-8c8c-71466251a162
2007-12-15 17:28:36 +00:00
