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Re: [Qemu-devel] [PATCH 01/17] aio: introduce aio_co_schedule and aio_co
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH 01/17] aio: introduce aio_co_schedule and aio_co_wake |
Date: |
Mon, 30 Jan 2017 15:18:59 +0000 |
User-agent: |
Mutt/1.7.1 (2016-10-04) |
On Fri, Jan 20, 2017 at 05:43:06PM +0100, Paolo Bonzini wrote:
> diff --git a/include/qemu/coroutine_int.h b/include/qemu/coroutine_int.h
> index 14d4f1d..1efa356 100644
> --- a/include/qemu/coroutine_int.h
> +++ b/include/qemu/coroutine_int.h
> @@ -40,12 +40,20 @@ struct Coroutine {
> CoroutineEntry *entry;
> void *entry_arg;
> Coroutine *caller;
> +
> + /* Only used when the coroutine has terminated. */
> QSLIST_ENTRY(Coroutine) pool_next;
> size_t locks_held;
locks_held is used when the coroutine is running. Please add a newline
to separate it from pool_next.
>
> - /* Coroutines that should be woken up when we yield or terminate */
> + /* Coroutines that should be woken up when we yield or terminate.
> + * Only used when the coroutine is running.
> + */
> QSIMPLEQ_HEAD(, Coroutine) co_queue_wakeup;
> +
> + /* Only used when the coroutine is sleeping. */
"running", "yielded", and "terminated" are terms with specific meanings.
Is "sleeping" a subset of "yielded" where the coroutine is waiting for a
mutex or its AioContext to schedule it?
> +static void test_multi_co_schedule_entry(void *opaque)
Missing coroutine_fn.
> diff --git a/tests/test-vmstate.c b/tests/test-vmstate.c
> index d2f529b..cb87997 100644
> --- a/tests/test-vmstate.c
> +++ b/tests/test-vmstate.c
> @@ -33,17 +33,6 @@
> static char temp_file[] = "/tmp/vmst.test.XXXXXX";
> static int temp_fd;
>
> -/* Fake yield_until_fd_readable() implementation so we don't have to pull the
> - * coroutine code as dependency.
> - */
> -void yield_until_fd_readable(int fd)
> -{
> - fd_set fds;
> - FD_ZERO(&fds);
> - FD_SET(fd, &fds);
> - select(fd + 1, &fds, NULL, NULL, NULL);
> -}
> -
>
> /* Duplicate temp_fd and seek to the beginning of the file */
> static QEMUFile *open_test_file(bool write)
This should be a separate patch.
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- [Qemu-devel] [PATCH 00/17] aio_context_acquire/release pushdown, part 2, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PATCH 02/17] block-backend: allow blk_prw from coroutine context, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PATCH 03/17] test-thread-pool: use generic AioContext infrastructure, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PATCH 01/17] aio: introduce aio_co_schedule and aio_co_wake, Paolo Bonzini, 2017/01/20
- Re: [Qemu-devel] [PATCH 01/17] aio: introduce aio_co_schedule and aio_co_wake,
Stefan Hajnoczi <=
- [Qemu-devel] [PATCH 05/17] io: add methods to set I/O handlers on AioContext, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PATCH 06/17] io: make qio_channel_yield aware of AioContexts, Paolo Bonzini, 2017/01/20
- Re: [Qemu-devel] [PATCH 06/17] io: make qio_channel_yield aware of AioContexts, Stefan Hajnoczi, 2017/01/30
- [Qemu-devel] [PATCH 08/17] coroutine-lock: reschedule coroutine on the AioContext it was running on, Paolo Bonzini, 2017/01/20