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| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-09-22 19:17:18 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-09-22 19:17:18 +0000 |
| commit | a76bab4952a1539266490295fb50b78802c467c2 (patch) | |
| tree | ae411e977a38d038186d96cee86affe3e04e1d57 /block-raw-win32.c | |
| parent | 1121f87961e87563df65134b15db05c0c2cc67da (diff) | |
| download | qemu-a76bab4952a1539266490295fb50b78802c467c2.zip qemu-a76bab4952a1539266490295fb50b78802c467c2.tar.gz qemu-a76bab4952a1539266490295fb50b78802c467c2.tar.bz2 | |
Refactor AIO to allow multiple AIO implementations
This patch refactors the AIO layer to allow multiple AIO implementations. It's
only possible because of the recent signalfd() patch.
Right now, the AIO infrastructure is pretty specific to the block raw backend.
For other block devices to implement AIO, the qemu_aio_wait function must
support registration. This patch introduces a new function,
qemu_aio_set_fd_handler, which can be used to register a file descriptor to be
called back. qemu_aio_wait() now polls a set of file descriptors registered
with this function until one becomes readable or writable.
This patch should allow the implementation of alternative AIO backends (via a
thread pool or linux-aio) and AIO backends in non-traditional block devices
(like NBD).
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5297 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'block-raw-win32.c')
| -rw-r--r-- | block-raw-win32.c | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/block-raw-win32.c b/block-raw-win32.c index 71404ac..fd4a9e3 100644 --- a/block-raw-win32.c +++ b/block-raw-win32.c @@ -339,19 +339,6 @@ static int raw_create(const char *filename, int64_t total_size, return 0; } -void qemu_aio_init(void) -{ -} - -void qemu_aio_flush(void) -{ -} - -void qemu_aio_wait(void) -{ - qemu_bh_poll(); -} - BlockDriver bdrv_raw = { "raw", sizeof(BDRVRawState), |