1  /* PR rtl-optimization/16199 */
       2  /* Origin: Olaf Klein <oklein@smallo.ruhr.de> */
       3  
       4  typedef enum {
       5      APR_LOCK_FCNTL,
       6      APR_LOCK_FLOCK,
       7      APR_LOCK_SYSVSEM,
       8      APR_LOCK_PROC_PTHREAD,
       9      APR_LOCK_POSIXSEM,
      10      APR_LOCK_DEFAULT
      11  } apr_lockmech_e;
      12  
      13  struct apr_proc_mutex_unix_lock_methods_t {
      14      unsigned int flags;
      15      const char *name;
      16  };
      17  
      18  typedef struct apr_proc_mutex_unix_lock_methods_t apr_proc_mutex_unix_lock_methods_t;
      19  
      20  extern const apr_proc_mutex_unix_lock_methods_t apr_proc_mutex_unix_sysv_methods;
      21  
      22  struct apr_proc_mutex_t {
      23      const apr_proc_mutex_unix_lock_methods_t *inter_meth;
      24      int curr_locked;
      25      char *fname;
      26  };
      27  
      28  typedef struct apr_proc_mutex_t apr_proc_mutex_t;
      29  
      30  extern const apr_proc_mutex_unix_lock_methods_t apr_proc_mutex_unix_proc_pthread_methods;
      31  
      32  extern const apr_proc_mutex_unix_lock_methods_t apr_proc_mutex_unix_fcntl_methods;
      33  
      34  static int proc_mutex_choose_method(apr_proc_mutex_t *new_mutex, apr_lockmech_e mech)
      35  {
      36      switch (mech) {
      37      case APR_LOCK_FCNTL:
      38          new_mutex->inter_meth = &apr_proc_mutex_unix_fcntl_methods;
      39          break;
      40      case APR_LOCK_FLOCK:
      41          return ((20000 + 50000) + 23);
      42          break;
      43      case APR_LOCK_SYSVSEM:
      44          new_mutex->inter_meth = &apr_proc_mutex_unix_sysv_methods;
      45          break;
      46      case APR_LOCK_POSIXSEM:
      47          return ((20000 + 50000) + 23);
      48          break;
      49      case APR_LOCK_PROC_PTHREAD:
      50          new_mutex->inter_meth = &apr_proc_mutex_unix_proc_pthread_methods;
      51          break;
      52      case APR_LOCK_DEFAULT:
      53          new_mutex->inter_meth = &apr_proc_mutex_unix_proc_pthread_methods;
      54          break;
      55      default:
      56          return ((20000 + 50000) + 23);
      57      }
      58      return 0;
      59  }
      60  
      61  const char* apr_proc_mutex_defname(void)
      62  {
      63      apr_proc_mutex_t mutex;
      64  
      65      if (proc_mutex_choose_method(&mutex, APR_LOCK_DEFAULT) != 0) {
      66          return "unknown";
      67      }
      68  }