[PATCH v2 19/20] node_device_udev: Pass the `udevEventData` via parameter and use refcounting
Instead of accessing the global `driver` object pass the `udevEventData` as
parameter to the thread handler and watch callback. This has the advantage that:
1. proper refcounting
2. easier to read and test
Reviewed-by: Jonathon Jongsma <jjongsma(a)redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy(a)linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay(a)linux.ibm.com>
---
src/node_device/node_device_udev.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
index 8687be942722..14d44d5bcd0e 100644
--- a/src/node_device/node_device_udev.c
+++ b/src/node_device/node_device_udev.c
@@ -1863,7 +1863,7 @@ udevEventMonitorSanityCheck(udevEventData *priv,
/**
* udevEventHandleThread
- * @opaque: unused
+ * @opaque: udevEventData
*
* Thread to handle the udevEventHandleCallback processing when udev
* tells us there's a device change for us (add, modify, delete, etc).
@@ -1882,9 +1882,9 @@ udevEventMonitorSanityCheck(udevEventData *priv,
* would still come into play.
*/
static void
-udevEventHandleThread(void *opaque G_GNUC_UNUSED)
+udevEventHandleThread(void *opaque)
{
- udevEventData *priv = driver->privateData;
+ g_autoptr(udevEventData) priv = opaque;
struct udev_device *device = NULL;
/* continue rather than break from the loop on non-fatal errors */
@@ -1950,9 +1950,9 @@ static void
udevEventHandleCallback(int watch G_GNUC_UNUSED,
int fd,
int events G_GNUC_UNUSED,
- void *data G_GNUC_UNUSED)
+ void *data)
{
- udevEventData *priv = driver->privateData;
+ udevEventData *priv = data;
VIR_LOCK_GUARD lock = virObjectLockGuard(priv);
if (!udevEventMonitorSanityCheck(priv, fd))
@@ -2489,7 +2489,7 @@ nodeStateInitialize(bool privileged,
priv->udevThread = g_new0(virThread, 1);
if (virThreadCreateFull(priv->udevThread, true, udevEventHandleThread,
- "udev-event", false, NULL) < 0) {
+ "udev-event", false, virObjectRef(priv)) < 0) {
virReportSystemError(errno, "%s",
_("failed to create udev handler thread"));
goto unlock;
@@ -2505,7 +2505,7 @@ nodeStateInitialize(bool privileged,
* that appear while the enumeration is taking place. */
priv->watch = virEventAddHandle(udev_monitor_get_fd(priv->udev_monitor),
VIR_EVENT_HANDLE_READABLE,
- udevEventHandleCallback, NULL, NULL);
+ udevEventHandleCallback, virObjectRef(priv),
virObjectUnref);
if (priv->watch == -1)
goto unlock;
--
2.34.1