ACE/examples/Shared_Memory/test_SV.cpp

   1 #include "ace/Shared_Memory_SV.h"
   2 #include "ace/Log_Msg.h"
   3 #include "ace/OS_NS_unistd.h"
   4
   5 #define SHMSZ 27
   6 #define SHM_KEY (key_t) 5678
   7
   8 static void
   9 client ()
  10 {
  11   ACE_Shared_Memory_SV shm_client (SHM_KEY, SHMSZ);
  12   char *shm = (char *) shm_client.malloc ();
  13
  14   for (char *s = shm; *s != '\0'; s++)
  15     putchar (*s);
  16
  17   putchar ('\n');
  18   *shm = '*';
  19 }
  20
  21 static void
  22 server ()
  23 {
  24   ACE_Shared_Memory_SV shm_server (SHM_KEY,
  25                                    SHMSZ,
  26                                    ACE_Shared_Memory_SV::ACE_CREATE);
  27   char *shm = (char *) shm_server.malloc ();
  28   char *s   = shm;
  29
  30   for (char c = 'a'; c <= 'z'; c++)
  31     *s++ = c;
  32
  33   *s = '\0';
  34
  35   while (*shm != '*')
  36     ACE_OS::sleep (1);
  37
  38   if (shm_server.remove () < 0)
  39     ACE_ERROR ((LM_ERROR, "%p\n", "remove"));
  40 }
  41
  42 int
  43 ACE_TMAIN (int, ACE_TCHAR *[])
  44 {
  45   switch (ACE_OS::fork ())
  46     {
  47     case -1:
  48       ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "fork"), 1);
  49     case 0:
  50       // Make sure the server starts up first.
  51       ACE_OS::sleep (1);
  52       client ();
  53       break;
  54     default:
  55       server ();
  56       break;
  57     }
  58
  59   return 0;
  60 }
  61