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aio / timers: Convert aio_poll to use AioContext timers' deadline

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Convert aio_poll to use deadline based on AioContext's timers.

aio_poll has been changed to return accurately whether progress
has occurred. Prior to this commit, aio_poll always returned
true if g_poll was entered, whether or not any progress was
made. This required a change to tests/test-aio.c where an
assert was backwards.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Alex Bligh 2013-08-21 16:02:53 +01:00 • committed by Stefan Hajnoczi
parent 4e29e8311a
commit 438e1f47e7
2 changed files with 30 additions and 8 deletions
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18
aio-posix.c
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@ -165,6 +165,10 @@ static bool aio_dispatch(AioContext *ctx)
g_free(tmp);
}
}
/* Run our timers */
progress |= timerlistgroup_run_timers(&ctx->tlg);
return progress;
}
@ -219,9 +223,9 @@ bool aio_poll(AioContext *ctx, bool blocking)
}
/* wait until next event */
ret = g_poll((GPollFD *)ctx->pollfds->data,
ctx->pollfds->len,
blocking ? -1 : 0);
ret = qemu_poll_ns((GPollFD *)ctx->pollfds->data,
ctx->pollfds->len,
blocking ? timerlistgroup_deadline_ns(&ctx->tlg) : 0);
/* if we have any readable fds, dispatch event */
if (ret > 0) {
@ -232,9 +236,11 @@ bool aio_poll(AioContext *ctx, bool blocking)
node->pfd.revents = pfd->revents;
}
}
if (aio_dispatch(ctx)) {
progress = true;
}
}
/* Run dispatch even if there were no readable fds to run timers */
if (aio_dispatch(ctx)) {
progress = true;
}
return progress;