From 0d8670a9359d6a895b003ad1cfd7a523983ba775 Mon Sep 17 00:00:00 2001
From: Alexander Clouter <alex@digriz.org.uk>
Date: Fri, 18 Nov 2016 18:50:24 +0000
Subject: document {yield/nb_yield}() limitation

---
 lib/kernel/doc/src/rpc.xml | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'lib')

diff --git a/lib/kernel/doc/src/rpc.xml b/lib/kernel/doc/src/rpc.xml
index 5944e9321a..adec2d9520 100644
--- a/lib/kernel/doc/src/rpc.xml
+++ b/lib/kernel/doc/src/rpc.xml
@@ -88,6 +88,12 @@
           to retrieve the value of evaluating <c>apply(<anno>Module</anno>,
           <anno>Function</anno>, <anno>Args</anno>)</c> on node
           <c><anno>Node</anno></c>.</p>
+        <note>
+          <p><seealso marker="#yield/1"><c>yield/1</c></seealso> and
+            <seealso marker="#nb_yield/1"><c>nb_yield/1,2</c></seealso>
+            must be called by the same process from which this function
+            was made otherwise they will never yield correctly.</p>
+        </note>
       </desc>
     </func>
 
@@ -299,6 +305,11 @@
           the tuple <c>{value, <anno>Val</anno>}</c> when the computation is
           finished, or <c>timeout</c> when <c><anno>Timeout</anno></c>
           milliseconds has elapsed.</p>
+        <note>
+          <p>This function must be called by the same process from which
+            <seealso marker="#async_call/4"><c>async_call/4</c></seealso>
+            was made otherwise it will only return <c>timeout</c>.</p>
+        </note>
       </desc>
     </func>
 
@@ -407,6 +418,11 @@
           If the answer is available, it is
           returned immediately. Otherwise, the calling process is
           suspended until the answer arrives from <c>Node</c>.</p>
+        <note>
+          <p>This function must be called by the same process from which
+            <seealso marker="#async_call/4"><c>async_call/4</c></seealso>
+            was made otherwise it will never return.</p>
+        </note>
       </desc>
     </func>
   </funcs>
-- 
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