Re: [Qemu-devel] [PATCH v4 00/10] main-loop: switch to g_poll(3) on POSIX hosts

[Alexander Graf]

On 22.02.2013, at 12:47, Paolo Bonzini wrote:

> Il 22/02/2013 11:07, Laurent Desnogues ha scritto:
>>> The g_poll(3) interface is a portable version of the poll(2) system call.  
>>> The
>>>> difference to select(2) is that fine-grained events (G_IO_IN, G_IO_OUT,
>>>> G_IO_HUP, G_IO_ERR, G_IO_PRI) can be monitored instead of just
>>>> read/write/exception.  Also, there is no limit to the file descriptor 
>>>> numbers
>>>> that may be used, allowing applications to scale to many file descriptors. 
>>>>  See
>>>> the documentation for details:
>>>> 
>>>>  http://developer.gnome.org/glib/2.28/glib-The-Main-Event-Loop.html#g-poll
>> g_poll isn't available in older glib versions used by CentOS (2.12
>> on CentOS 5.6).
> 
> Hmm, right.  But we can just use poll.  We require a newer glib that has
> g_poll on Windows, but we know that on POSIX systems g_poll is really poll.

This is what I get on my openSUSE 11.1 system:

../aio-posix.o: In function `aio_poll':
/home/agraf/release/qemu/aio-posix.c:235: undefined reference to `g_poll'
../main-loop.o: In function `os_host_main_loop_wait':
/home/agraf/release/qemu/main-loop.c:196: undefined reference to `g_poll'
/home/agraf/release/qemu/main-loop.c:196: undefined reference to `g_poll'


Alex