win32: use glib gpoll if glib >= 2.50

A fix has been committed in upstream glib commit
210a9796f78eb90f76f1bd6a304e9fea05e97617.
(See also related bug https://bugzilla.gnome.org/show_bug.cgi?id=764415)

It is desirable to use the glib version instead of qemu copy, since it
provides more debugging facilities (G_MAIN_POLL_DEBUG etc), and
hopefully has a better maintainance. Hopefully, we can drop the qemu
copy in a few years.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/include/glib-compat.h b/include/glib-compat.h
index acf254d..0cd24ff 100644 (file)
--- a/include/glib-compat.h
+++ b/include/glib-compat.h
@@ -39,7 +39,7 @@ static inline gint64 qemu_g_get_monotonic_time(void)
 #define g_get_monotonic_time() qemu_g_get_monotonic_time()
 #endif
 
-#ifdef _WIN32
+#if defined(_WIN32) && !GLIB_CHECK_VERSION(2, 50, 0)
 /*
  * g_poll has a problem on Windows when using
  * timeouts < 10ms, so use wrapper.

diff --git a/util/oslib-win32.c b/util/oslib-win32.c
index d09863c..0b1890f 100644 (file)
--- a/util/oslib-win32.c
+++ b/util/oslib-win32.c
@@ -327,6 +327,7 @@ char *qemu_get_exec_dir(void)
     return g_strdup(exec_dir);
 }
 
+#if !GLIB_CHECK_VERSION(2, 50, 0)
 /*
  * The original implementation of g_poll from glib has a problem on Windows
  * when using timeouts < 10 ms.
@@ -530,6 +531,7 @@ gint g_poll(GPollFD *fds, guint nfds, gint timeout)
 
     return retval;
 }
+#endif
 
 int getpagesize(void)
 {