function apdqc_install_total_memory in Asynchronous Prefetch Database Query Cache 7

Identify the total amount of system memory available.

Return value

int

1 call to apdqc_install_total_memory()

apdqc_requirements in ./apdqc.install

Implements hook_requirements().

File

./apdqc.install, line 1824

Handles APDQC installation and status checks.

Code

function apdqc_install_total_memory() {

  // Cache the value statically so this is only processed once.
  static $total_memory;

  // First time through, identify how much system memory there is.
  if (is_null($total_memory)) {

    // Windows uses the command "wmic".
    if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
      exec('wmic memorychip get capacity', $total_memory);
      unset($total_memory['0']);
      $total_memory = array_sum($total_memory);
    }
    elseif (strtoupper(substr(PHP_OS, 0, 6)) == 'DARWIN') {
      exec('system_profiler SPHardwareDataType', $total_memory);
      $total_memory = $total_memory[12];
      $total_memory = explode(':', $total_memory);
      $total_memory = apdqc_install_human2byte(trim($total_memory[1]));
    }
    else {
      $data = explode("\n", file_get_contents("/proc/meminfo"));
      $total_memory = apdqc_install_human2byte(substr($data[0], 9));
    }
  }
  return $total_memory;
}