ACE/examples/IPC_SAP/TLI_SAP/db-server.cpp

   1 // Simple multi-threaded database server example.
   2
   3 #include "ace/OS_NS_stdio.h"
   4 #include "ace/TLI_Acceptor.h"
   5 #include "ace/Thread_Manager.h"
   6
   7
   8 #if defined (ACE_HAS_THREADS) && defined (ACE_HAS_TLI)
   9
  10 // Global thread manager.
  11 ACE_Thread_Manager thr_mgr;
  12
  13 void *
  14 lookup_name (ACE_HANDLE handle)
  15 {
  16   enum
  17   {
  18     MAXLINE = 255,
  19     EMPNAMELEN = 512
  20   };
  21
  22   static struct
  23   {
  24     int emp_id;
  25     const char *emp_name;
  26   } employee_db[] =
  27     {
  28       {123, "John Wayne Bobbit"},
  29       {124, "Woody Allen"},
  30       {125, "O. J. Simpson"},
  31       {126, "Bill Clinton"},
  32       {127, "Rush Limbaugh"},
  33       {128, "Michael Jackson"},
  34       {129, "Kenneth Starr"},
  35       {130, "Paula Jones"},
  36       {131, "Monica Lewinsky"},
  37       {132, "Marv Albert"},
  38       {0, ""}
  39     };
  40
  41   int flags;
  42   int employee_id;
  43   int index;
  44   int found;
  45   ACE_TLI_Stream stream;
  46   char recvline[MAXLINE];
  47   char sendline[MAXLINE];
  48
  49   ACE_DEBUG ((LM_DEBUG,
  50               "stream handle = %d, thread id = %t\n",
  51               handle));
  52   stream.set_handle (handle);
  53
  54   ssize_t n = stream.recv (recvline, MAXLINE, &flags);
  55
  56   if (n == -1)
  57     ACE_OS::t_error ("stream.recv error");
  58
  59   employee_id = ACE_OS::atoi (recvline);
  60   found = 0;
  61
  62   for (index = 0; found == 0 && employee_db[index].emp_id; index++)
  63     if (employee_id == employee_db[index].emp_id)
  64       {
  65         found = 1;
  66         n = ACE_OS::sprintf (sendline,
  67                              "%s", employee_db[index].emp_name);
  68       }
  69
  70   if (found == 0)
  71     n = ACE_OS::sprintf (sendline, "%s", "ERROR");
  72
  73   if (stream.send (sendline, n + 1, 0) == -1)
  74     ACE_OS::t_error ("stream.send error");
  75
  76   if (stream.sndrel () == -1)
  77     ACE_OS::t_error ("stream.send error");
  78
  79   if (stream.close () == -1)
  80     ACE_OS::t_error ("stream.close error");
  81
  82   return 0;
  83 }
  84
  85 int
  86 ACE_TMAIN (int argc, ACE_TCHAR *argv[])
  87 {
  88   u_short port = argc > 1 ? ACE_OS::atoi (argv[1]) : ACE_DEFAULT_SERVER_PORT;
  89   ACE_INET_Addr l_addr (port);
  90   ACE_TLI_Acceptor server (l_addr, 1); // Create server, reuse addr if in use.
  91   ACE_TLI_Stream new_stream;
  92
  93   // Wait for a connection from a client.  This is an example of a
  94   // concurrent server.
  95
  96   for (;;)
  97     {
  98       if (server.accept (new_stream) == -1)
  99         ACE_OS::t_error ("server.accept error");
 100
 101       if (thr_mgr.spawn (ACE_THR_FUNC (lookup_name),
 102                          (void *) new_stream.get_handle (),
 103                          THR_DETACHED) == -1)
 104         ACE_DEBUG ((LM_ERROR,
 105                     "server: can't create worker thread %d\n"));
 106     }
 107
 108   ACE_NOTREACHED (return 0);
 109 }
 110 #else
 111 #include <stdio.h>
 112 int ACE_TMAIN (int, ACE_TCHAR *[])
 113 {
 114   ACE_ERROR_RETURN ((LM_ERROR,
 115                      "platform isn't configured to support TLI\n"),
 116                     1);
 117 }
 118 #endif /* ACE_HAS_THREADS */