File 0559-Clarify-the-atomic-guarantees-for-ets-upda... of Package erlang

Overview Repositories Revisions Requests Users Attributes Meta

File 0559-Clarify-the-atomic-guarantees-for-ets-update_counter.patch of Package erlang (Revision aa120d3233f613ad478314c3181372c5)

Currently displaying revision aa120d3233f613ad478314c3181372c5 , Show latest

From b1da810f5702e4bedfacd24eb37907648891b277 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Fri, 22 Feb 2019 12:43:25 +0100
Subject: [PATCH] Clarify the atomic guarantees for ets:update_counter()

The phrasing "no process can access the ETS table in the middle of the
operation" implies that the entire table is looked during
the operation, which is not true if `write_concurrency`
is enabled.
---
 lib/stdlib/doc/src/ets.xml | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/lib/stdlib/doc/src/ets.xml b/lib/stdlib/doc/src/ets.xml
index 622edc072e..b9ceaa1d69 100644
--- a/lib/stdlib/doc/src/ets.xml
+++ b/lib/stdlib/doc/src/ets.xml
@@ -2008,9 +2008,8 @@ true</pre>
         <p>This function provides an efficient way to update one or more 
           counters, without the trouble of having to look up an object, update 
           the object by incrementing an element, and insert the resulting
-          object into the table again. (The update is done atomically,
-          that is, no process 
-          can access the ETS table in the middle of the operation.)</p>
+          object into the table again. The operation is guaranteed to be
+          <seealso marker="#concurrency">atomic and isolated</seealso>.</p>
         <p>This function destructively update the object with key
           <c><anno>Key</anno></c> in table <c><anno>Tab</anno></c> by adding
           <c><anno>Incr</anno></c> to the element at position
-- 
2.16.4

Places

File 0559-Clarify-the-atomic-guarantees-for-ets-update_counter.patch of Package erlang (Revision aa120d3233f613ad478314c3181372c5)

Places