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[gio] minor improvements to g_cancellable_cancel()
- make this function not crash when cancellable is NULL - avoid locking when the cancellable has already been cancelled
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8a2e617e41
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@ -514,27 +514,27 @@ g_cancellable_make_pollfd (GCancellable *cancellable, GPollFD *pollfd)
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void
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g_cancellable_cancel (GCancellable *cancellable)
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{
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static const char ch = 'x';
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gboolean cancel;
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GCancellablePrivate *priv;
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if (cancellable == NULL ||
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priv->cancelled)
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return;
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priv = cancellable->priv;
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cancel = FALSE;
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G_LOCK(cancellable);
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if (cancellable != NULL &&
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!priv->cancelled)
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{
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char ch = 'x';
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cancel = TRUE;
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priv->cancelled = TRUE;
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priv->cancelled_running = TRUE;
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cancel = TRUE;
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priv->cancelled = TRUE;
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priv->cancelled_running = TRUE;
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#ifdef G_OS_WIN32
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if (priv->event)
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SetEvent(priv->event);
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if (priv->event)
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SetEvent(priv->event);
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#endif
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if (priv->cancel_pipe[1] != -1)
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write (priv->cancel_pipe[1], &ch, 1);
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}
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if (priv->cancel_pipe[1] != -1)
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write (priv->cancel_pipe[1], &ch, 1);
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G_UNLOCK(cancellable);
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if (cancel)
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