X-Git-Url: http://git.silcnet.org/gitweb/?a=blobdiff_plain;f=lib%2Fsilcutil%2Fsilcasync.h;h=6e7469839e8ea06dfd953ee43fd89831295fdbf4;hb=e7b6c157b80152bf9fb9266e6bdd93f9fb0db776;hp=2853e9c3d0f02ab79cb3acea7d88f7ed8a924219;hpb=c1c904ec2af21f1c2b272d790b38d93824af5352;p=silc.git

diff --git a/lib/silcutil/silcasync.h b/lib/silcutil/silcasync.h
index 2853e9c3..6e746983 100644
--- a/lib/silcutil/silcasync.h
+++ b/lib/silcutil/silcasync.h
@@ -35,6 +35,32 @@
  * operation, no callback function will be called back to the upper layer.
  * This must be remembered when implementing the operation layer.
  *
+ * EXAMPLE
+ *
+ * SilcAsyncOperation async_call(Callback callback, void *cb_context)
+ * {
+ *   SilcAsyncOperation op;
+ *   OpContext ctx;
+ *
+ *   // Allocate async operation so that caller can control us, like abort
+ *   op = silc_async_alloc(async_call_abort, NULL, ctx);
+ *   ctx->callback = callback;
+ *
+ *   ...
+ *
+ *   // Return async operation for upper layer
+ *   return op;
+ * }
+ *
+ * // This callback is called when silc_async_abort is called by upper layer.
+ * // The callback given to async_call must not be called after this.
+ * void async_call_abort(SilcAsyncOperation op, void *context)
+ * {
+ *   OpContext ctx = context;
+ *   ctx->aborted = TRUE;
+ *   ctx->callback = NULL;
+ * }
+ *
  ***/
 
 #ifndef SILCASYNC_H
@@ -252,7 +278,7 @@ SilcAsyncOperation silc_async_alloc(SilcAsyncOperationAbort abort_cb,
  *    silc_async_abort.  Since this use pre-allocated context, the function
  *    silc_async_free need not be called.  This function is equivalent
  *    to silc_async_alloc except this does not allocate any memory.  The `op'
- *    needs not be uninitialized.
+ *    needs not be uninitialized.  This returns always TRUE.
  *
  *    If the `pause_cb' is provided then the upper layer may also halt and
  *    then later resume the execution of the operation, by calling the