ignoring exception from sem_get in SemaphoreStore Lock component, preventing of error: identifier removed

Triplkrypl · Triplkrypl · commit 05787c7149a9 · 2022-03-17T18:57:09.000+01:00
diff --git a/Store/SemaphoreStore.php b/Store/SemaphoreStore.php
@@ -64,12 +64,12 @@ private function lock(Key $key, bool $blocking)
         }
 
         $keyId = unpack('i', md5($key, true))[1];
-        $resource = sem_get($keyId);
-        $acquired = @sem_acquire($resource, !$blocking);
+        $resource = @sem_get($keyId);
+        $acquired = $resource && @sem_acquire($resource, !$blocking);
 
         while ($blocking && !$acquired) {
-            $resource = sem_get($keyId);
-            $acquired = @sem_acquire($resource);
+            $resource = @sem_get($keyId);
+            $acquired = $resource && @sem_acquire($resource);
         }
 
         if (!$acquired) {

Original file line number	Diff line number	Diff line change
`@@ -64,12 +64,12 @@ private function lock(Key $key, bool $blocking)`
`64`	`64`	`}`
`65`	`65`
`66`	`66`	`$keyId = unpack('i', md5($key, true))[1];`
`67`		`- $resource = sem_get($keyId);`
`68`		`- $acquired = @sem_acquire($resource, !$blocking);`
	`67`	`+ $resource = @sem_get($keyId);`
	`68`	`+ $acquired = $resource && @sem_acquire($resource, !$blocking);`
`69`	`69`
`70`	`70`	`while ($blocking && !$acquired) {`
`71`		`- $resource = sem_get($keyId);`
`72`		`- $acquired = @sem_acquire($resource);`
	`71`	`+ $resource = @sem_get($keyId);`
	`72`	`+ $acquired = $resource && @sem_acquire($resource);`
`73`	`73`	`}`
`74`	`74`
`75`	`75`	`if (!$acquired) {`