private function Process::getDescriptors

Creates the descriptors needed by the proc_open.

Return value

array

File

drupal/core/vendor/symfony/process/Symfony/Component/Process/Process.php, line 1080

Class

Process

Process is a thin wrapper around proc_* functions to ease start independent PHP processes.

Namespace

Code

private function getDescriptors() {

  //Fix for PHP bug #51800: reading from STDOUT pipe hangs forever on Windows if the output is too big.

  //Workaround for this problem is to use temporary files instead of pipes on Windows platform.

  //@see https://bugs.php.net/bug.php?id=51800
  if (defined('PHP_WINDOWS_VERSION_BUILD')) {
    $this->fileHandles = array(
      self::STDOUT => tmpfile(),
    );
    if (false === $this->fileHandles[self::STDOUT]) {
      throw new RuntimeException('A temporary file could not be opened to write the process output to, verify that your TEMP environment variable is writable');
    }
    $this->readBytes = array(
      self::STDOUT => 0,
    );
    return array(
      array(
        'pipe',
        'r',
      ),
      $this->fileHandles[self::STDOUT],
      array(
        'pipe',
        'w',
      ),
    );
  }
  if ($this->tty) {
    $descriptors = array(
      array(
        'file',
        '/dev/tty',
        'r',
      ),
      array(
        'file',
        '/dev/tty',
        'w',
      ),
      array(
        'file',
        '/dev/tty',
        'w',
      ),
    );
  }
  else {
    $descriptors = array(
      array(
        'pipe',
        'r',
      ),
      // stdin
      array(
        'pipe',
        'w',
      ),
      // stdout
      array(
        'pipe',
        'w',
      ),
    );
  }
  if ($this->enhanceSigchildCompatibility && $this
    ->isSigchildEnabled()) {

    // last exit code is output on the fourth pipe and caught to work around --enable-sigchild
    $descriptors = array_merge($descriptors, array(
      array(
        'pipe',
        'w',
      ),
    ));
    $this->commandline = '(' . $this->commandline . ') 3>/dev/null; code=$?; echo $code >&3; exit $code';
  }
  return $descriptors;
}