hphp/util/kernel-version.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16 #ifndef incl_HPHP_KERNEL_VERSION_H_
  17 #define incl_HPHP_KERNEL_VERSION_H_
  18
  19 #include <string>
  20
  21 namespace HPHP {
  22
  23 struct KernelVersion {
  24   // <major>.<minor>.<release>-<build>_fbk<fbk>
  25   int m_major;
  26   int m_minor;
  27   int m_release;
  28   int m_build;
  29   std::string m_release_str;
  30   std::string m_build_str;
  31   int m_fbk;
  32   KernelVersion();             // Use uname
  33   explicit KernelVersion(const char*);  // A known kernel version for cmp.
  34   static int cmp(const KernelVersion& l, const KernelVersion& r) {
  35 #define C(field) if (l.field != r.field) return l.field - r.field;
  36     C(m_major);
  37     C(m_minor);
  38     C(m_release);
  39     C(m_build);
  40     C(m_fbk);
  41 #undef C
  42     return 0;
  43   }
  44   private:
  45   void parse(const char* c);
  46   bool isNumber(const std::string s);
  47 };
  48
  49 }
  50
  51 #endif