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glib: add compatibility interface for g_get_monotonic_time() 

This patch fixes compilation errors when building against glib <2.28.0
due to the missing g_get_monotonic_time() function.

The compilation error in tests/libqos/virtio.c was introduced in commit
70556264a8 ("libqos: use microseconds
instead of iterations for virtio timeout").

Add a simple g_get_monotonic_time() implementation to glib-compat.h
based on code from vhost-user-test.c.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
[Igor: add G_TIME_SPAN_SECOND, include glib-compat.h in libqtest.h]
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Stefan Hajnoczi 2014-10-15 14:29:30 +02:00 committed by Peter Maydell
parent 32d9c5613e
commit 89b516d8b9
3 changed files with 21 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
include/glib-compat.h
View File

@ -18,6 +18,11 @@
#include <glib.h>
/* GLIB version compatibility flags */
#if !GLIB_CHECK_VERSION(2, 26, 0)
#define G_TIME_SPAN_SECOND (G_GINT64_CONSTANT(1000000))
#endif
#if !GLIB_CHECK_VERSION(2, 14, 0)
static inline guint g_timeout_add_seconds(guint interval, GSourceFunc function,
gpointer data)
@ -26,6 +31,20 @@ static inline guint g_timeout_add_seconds(guint interval, GSourceFunc function,
}
#endif
#if !GLIB_CHECK_VERSION(2, 28, 0)
static inline gint64 g_get_monotonic_time(void)
{
/* g_get_monotonic_time() is best-effort so we can use the wall clock as a
* fallback.
*/
GTimeVal time;
g_get_current_time(&time);
return time.tv_sec * G_TIME_SPAN_SECOND + time.tv_usec;
}
#endif
#ifdef _WIN32
/*
* g_poll has a problem on Windows when using

1
tests/libqtest.h
View File

@ -23,6 +23,7 @@
#include <stdarg.h>
#include <sys/types.h>
#include "qapi/qmp/qdict.h"
#include "glib-compat.h"
typedef struct QTestState QTestState;

23
tests/vhost-user-test.c
View File

@ -21,15 +21,6 @@
#include <sys/vfs.h>
#include <qemu/sockets.h>
/* GLIB version compatibility flags */
#if !GLIB_CHECK_VERSION(2, 26, 0)
#define G_TIME_SPAN_SECOND (G_GINT64_CONSTANT(1000000))
#endif
#if GLIB_CHECK_VERSION(2, 28, 0)
#define HAVE_MONOTONIC_TIME
#endif
#if GLIB_CHECK_VERSION(2, 32, 0)
#define HAVE_MUTEX_INIT
#define HAVE_COND_INIT
@ -116,18 +107,6 @@ static VhostUserMemory memory;
static GMutex *data_mutex;
static GCond *data_cond;
static gint64 _get_time(void)
{
#ifdef HAVE_MONOTONIC_TIME
return g_get_monotonic_time();
#else
GTimeVal time;
g_get_current_time(&time);
return time.tv_sec * G_TIME_SPAN_SECOND + time.tv_usec;
#endif
}
static GMutex *_mutex_new(void)
{
GMutex *mutex;
@ -210,7 +189,7 @@ static void read_guest_mem(void)
g_mutex_lock(data_mutex);
end_time = _get_time() + 5 * G_TIME_SPAN_SECOND;
end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
while (!fds_num) {
if (!_cond_wait_until(data_cond, data_mutex, end_time)) {
/* timeout has passed */