From 5233c2a4f283f9c863e0b6fd963ff89fa9f19b75 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=A9my=20Deruss=C3=A9?= <jeremy@derusse.com>
Date: Fri, 4 Sep 2020 23:45:41 +0200
Subject: [PATCH] Fix bad example of lock

---
 components/lock.rst | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/components/lock.rst b/components/lock.rst
index 19f1d2dbf8b..fdaf3b7686a 100644
--- a/components/lock.rst
+++ b/components/lock.rst
@@ -117,7 +117,9 @@ method, the resource will stay locked until the timeout::
     // create an expiring lock that lasts 30 seconds
     $lock = $factory->createLock('charts-generation', 30);
 
-    $lock->acquire();
+    if (!$lock->acquire()) {
+        return;
+    }
     try {
         // perform a job during less than 30 seconds
     } finally {
@@ -136,7 +138,9 @@ to reset the TTL to its original value::
     // ...
     $lock = $factory->createLock('charts-generation', 30);
 
-    $lock->acquire();
+    if (!$lock->acquire()) {
+        return;
+    }
     try {
         while (!$finished) {
             // perform a small part of the job.
@@ -366,7 +370,9 @@ Using the above methods, a more robust code would be::
     // ...
     $lock = $factory->createLock('invoice-publication', 30);
 
-    $lock->acquire();
+    if (!$lock->acquire()) {
+        return;
+    }
     while (!$finished) {
         if ($lock->getRemainingLifetime() <= 5) {
             if ($lock->isExpired()) {