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AioContext: acquire/release AioContext during aio_poll

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This is the first step in pushing down acquire/release, and will let
rfifolock drop the contention callback feature.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1424449612-18215-3-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2015-02-20 17:26:51 +01:00 • committed by Kevin Wolf
parent e98ab09709
commit 49110174f8
3 changed files with 24 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

8
aio-win32.c
View file

@ -283,6 +283,7 @@ bool aio_poll(AioContext *ctx, bool blocking)
int count;
int timeout;
aio_context_acquire(ctx);
have_select_revents = aio_prepare(ctx);
if (have_select_revents) {
blocking = false;
@ -323,7 +324,13 @@ bool aio_poll(AioContext *ctx, bool blocking)
timeout = blocking
? qemu_timeout_ns_to_ms(aio_compute_timeout(ctx)) : 0;
if (timeout) {
aio_context_release(ctx);
}
ret = WaitForMultipleObjects(count, events, FALSE, timeout);
if (timeout) {
aio_context_acquire(ctx);
}
aio_set_dispatching(ctx, true);
if (first && aio_bh_poll(ctx)) {
@ -349,5 +356,6 @@ bool aio_poll(AioContext *ctx, bool blocking)
progress |= timerlistgroup_run_timers(&ctx->tlg);
aio_set_dispatching(ctx, was_dispatching);
aio_context_release(ctx);
return progress;
}