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[gio] minor improvements to g_cancellable_cancel()

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- make this function not crash when cancellable is NULL
- avoid locking when the cancellable has already been cancelled
This commit is contained in:
Benjamin Otte 2009-07-05 21:34:39 +02:00
parent 8a2e617e41
commit c85ff0c750
1 changed files with 12 additions and 12 deletions
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24
gio/gcancellable.c
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@ -514,27 +514,27 @@ g_cancellable_make_pollfd (GCancellable *cancellable, GPollFD *pollfd)
void
g_cancellable_cancel (GCancellable *cancellable)
{
static const char ch = 'x';
gboolean cancel;
GCancellablePrivate *priv;
if (cancellable == NULL ||
priv->cancelled)
return;
priv = cancellable->priv;
cancel = FALSE;
G_LOCK(cancellable);
if (cancellable != NULL &&
!priv->cancelled)
{
char ch = 'x';
cancel = TRUE;
priv->cancelled = TRUE;
priv->cancelled_running = TRUE;
cancel = TRUE;
priv->cancelled = TRUE;
priv->cancelled_running = TRUE;
#ifdef G_OS_WIN32
if (priv->event)
SetEvent(priv->event);
if (priv->event)
SetEvent(priv->event);
#endif
if (priv->cancel_pipe[1] != -1)
write (priv->cancel_pipe[1], &ch, 1);
}
if (priv->cancel_pipe[1] != -1)
write (priv->cancel_pipe[1], &ch, 1);
G_UNLOCK(cancellable);
if (cancel)