ACE/apps/drwho/HT_Server.cpp

   1 #include "HT_Server.h"
   2 #include "ace/ACE.h"
   3 #include "ace/OS_NS_string.h"
   4 #include "ace/OS_Memory.h"
   5
   6 // Insert a KEY_NAME into the hash table, if it doesn't already exist
   7 // there.  What gets returned is a pointer to the node inserted.  Note
   8 // that we do our own memory allocation here...
   9
  10 Protocol_Record *
  11 HT_Server::insert (const char *key_name, int max_len)
  12 {
  13   Protocol_Record **prpp = 0;
  14
  15   // This is tricky...
  16
  17   for (prpp = &this->hash_table[ACE::hash_pjw (key_name) % this->hash_table_size];
  18        *prpp != 0 && ACE_OS::strncmp ((*prpp)->get_login (), key_name, max_len) != 0;
  19        prpp = &(*prpp)->next_)
  20     continue;
  21
  22   if (*prpp == 0)
  23     {
  24       // Remember, the server must be very careful about stuff it
  25       // receives from the rwho manager, since it may not be
  26       // NUL-terminated.  That's why we use ACE::strnnew ()...
  27
  28       ACE_NEW_RETURN (*prpp,
  29                       Protocol_Record (ACE::strnnew (key_name,
  30                                                      max_len),
  31                                        *prpp),
  32                       0);
  33       this->count_++;
  34     }
  35
  36   return *prpp;
  37 }