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| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-09-10 15:45:19 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-09-10 15:45:19 +0000 |
| commit | baf35cb90204d75404892aa4e52628ae7a00669b (patch) | |
| tree | 44d96418e4d0e90c5841692a29743022fbc107c1 /Makefile | |
| parent | 279826619dfb36bac39d8549526a76eabb9d311e (diff) | |
| download | qemu-baf35cb90204d75404892aa4e52628ae7a00669b.zip qemu-baf35cb90204d75404892aa4e52628ae7a00669b.tar.gz qemu-baf35cb90204d75404892aa4e52628ae7a00669b.tar.bz2 | |
Use signalfd() to work around signal/select race
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
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -177,7 +177,7 @@ QEMU_IMG_BLOCK_OBJS = $(BLOCK_OBJS) ifdef CONFIG_WIN32 QEMU_IMG_BLOCK_OBJS += qemu-img-block-raw-win32.o else -QEMU_IMG_BLOCK_OBJS += nbd.o qemu-img-block-raw-posix.o +QEMU_IMG_BLOCK_OBJS += nbd.o qemu-img-block-raw-posix.o compatfd.o endif ###################################################################### @@ -195,7 +195,7 @@ qemu-nbd-%.o: %.c $(CC) $(CFLAGS) $(CPPFLAGS) -DQEMU_NBD -c -o $@ $< qemu-nbd$(EXESUF): qemu-nbd.o qemu-nbd-nbd.o qemu-img-block.o \ - osdep.o qemu-nbd-block-raw-posix.o $(BLOCK_OBJS) + osdep.o qemu-nbd-block-raw-posix.o compatfd.o $(BLOCK_OBJS) $(CC) $(LDFLAGS) -o $@ $^ -lz $(LIBS) # dyngen host tool |