[Process] Use stream based storage to avoid memory issues

romainneutron · romainneutron · commit 2d931f43e074 · 2016-01-20T10:24:45.000+01:00
diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
@@ -491,6 +491,10 @@ public function getOutput()
      */
     public function getIncrementalOutput()
     {
+        if ($this->outputDisabled) {
+            throw new LogicException('Output has been disabled.');
+        }
+
         $this->requireProcessIsStarted(__FUNCTION__);
 
         $latest = stream_get_contents($this->stdout, -1, $this->incrementalOutputOffset);
@@ -510,7 +514,8 @@ public function getIncrementalOutput()
      */
     public function clearOutput()
     {
-        $this->stdout = '';
+        ftruncate($this->stdout, 0);
+        fseek($this->stdout, 0);
         $this->incrementalOutputOffset = 0;
 
         return $this;
@@ -555,6 +560,10 @@ public function getErrorOutput()
      */
     public function getIncrementalErrorOutput()
     {
+        if ($this->outputDisabled) {
+            throw new LogicException('Output has been disabled.');
+        }
+
         $this->requireProcessIsStarted(__FUNCTION__);
 
         $latest = stream_get_contents($this->stderr, -1, $this->incrementalErrorOutputOffset);
@@ -574,7 +583,8 @@ public function getIncrementalErrorOutput()
      */
     public function clearErrorOutput()
     {
-        $this->stderr = '';
+        ftruncate($this->stderr, 0);
+        fseek($this->stderr, 0);
         $this->incrementalErrorOutputOffset = 0;
 
         return $this;
