text: /* cnaiapi_init.c - cnaiapi_init */
  
  #include <cnaiapi.h>
  #include <stdio.h>
  
  #if defined(LINUX) || defined(SOLARIS)
  pthread_mutex_t		await_contact_mutex = PTHREAD_MUTEX_INITIALIZER;
  pthread_mutex_t		cname_mutex = PTHREAD_MUTEX_INITIALIZER;
  pthread_mutex_t		appname_mutex = PTHREAD_MUTEX_INITIALIZER;
  #elif defined(WIN32)
  HANDLE			await_contact_mutex;	
  HANDLE			cname_mutex;
  HANDLE			appname_mutex;
  #endif
  
  int init = 0;
  
  /*-----------------------------------------------------------------------
   * cnaiapi_init - initialize the library. Initialize Winsock (if Win32)
   * and create mutexes.
   *
   * Note: All CNAIAPI functions call cnaiapi_init first to ensure that
   * the library is initialized. This is done for ease-of-use for
   * beginners. 
   *
   * **
   * ** Having the functions call cnaiapi_init first creates
   * ** a race condition in multi-threaded applications.
   * ** If your application is multithreaded, call cnaiapi_init explicitly
   * ** before you spawn any threads.
   * **
   *
   *-----------------------------------------------------------------------
   */
  void
  cnaiapi_init(void)
  {
  #if defined(WIN32)
  	WORD    wsavers;
  	WSADATA wsadata;
  #endif
  
  	if (init != 0)
  		return;
  
  #if defined(WIN32)
  	wsavers = MAKEWORD(1, 1);
  	if (WSAStartup(wsavers, &wsadata) != 0) {
  		(void) fprintf(stderr, "WSAStartup failed.\n");
  		exit(1);
  	}
  
  	await_contact_mutex = CreateMutex(NULL, FALSE, NULL);
  	cname_mutex = CreateMutex(NULL, FALSE, NULL);
  	appname_mutex = CreateMutex(NULL, FALSE, NULL);
  #endif
  	init = 1;
  }
  