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> Example 2: A thread termination under C/2 with the standard function _endthread()
> 
> (1.) Prototype definition:
> 
>  #include <stdlib.h>    /* also defined in <process.h> */
>  
>  void _endthread(void);
>  
> In the header file stdlib.h there are the definitions for the function _endthread() 
> 
> 
> (2.) Language Level: Extension 
> 
>  The _endthread function explicitly ends a thread  anywhere where it is called in the function of the thread where you previously created it with  _beginthread before the thread has completed its function.
> 
> For example, if some  condition is not met, _endthread terminates the thread. When the thread has finished, it automatically ends itself with an implicit call to _endthread. 
> In other words: A thread can terminate itself either by returning from the main thread
> function or by using and _endthread() anywhere in the execution of the thread.
> 
> Note:   
> 
> 1. When using the _beginthread and _endthread functions, you must specify the 
> /Gm+ compiler option to use the multithread libraries. 
> 
> 2. If you use DosCreateThread, you must explicitly call _endthread to 
> terminate the thread. 
> 
> There is no return value of the function _endthread(). 
> 
>  
> (3.)Programming example:
> 
>  
> 
>  /************************************************************************
>  *
>  In this example, the main program creates two threads, bonjour 
>  and au_revoir. The thread bonjour is forcibly terminated by a 
>  call to _endthread, while the au_revoir thread ends itself with an 
>  implicit call to _endthread. 
> 
>  Note:  To run this example, you must compile it using the /Gm+ 
>  compile-time option. 
> 
>                                                                          *
>  ************************************************************************/
>  
>  
>  
> 
>  #define INCL_DOS
>  #include <os2.h>
>  #include <stdio.h>
>  #include <stdlib.h>
>  #include <process.h>
>  
>  void bonjour(void *arg)
>  {
>     int i = 0;
>     while ( i++ < 5 )
>        printf("Bonjour!\n");
>  
>     _endthread();              /* This thread ends itself explicitly */
>     puts("thread should terminate before printing this");
>  }
>  
>  void au_revoir(void *arg)
>  {
>     int i = 0;
>     while ( i++ < 5 )           /* This thread makes an implicit */
>        printf("Au revoir!\n");  /* call to _endthread            */
>  }
>  
>  int main(void)
>  {
>     unsigned long tid1;
>     unsigned long tid2;
>  
>     tid1 = _beginthread(bonjour, NULL, 8192, NULL);
>     tid2 = _beginthread(au_revoir, NULL, 8192, NULL);
>  
>     if ( (tid1 == -1) || (tid2 == -1) )
>     {
>        printf("Unable to start threads.\n");
>        exit(-1);
>     }
>  
>     DosWaitThread( &tid2, DCWW_WAIT );   /*  wait until threads 1 and 2  */
>     DosWaitThread( &tid1, DCWW_WAIT );   /*  have been completed         */
>  
>     return 0;
>  
>     /* Possible output could be:
>  
>        Bonjour!
>        Au revoir!
>        Bonjour!
>        Au revoir!
>        Bonjour!
>        Au revoir!
>        Bonjour!
>        Au revoir!
>        Bonjour!
>        Au revoir!           */
>  
>  }
>  
>  
> Remarks:
> 
> The return value of -1 from the function _beginthread means that the function ended
> with an error. 
> 
> In this example there are two thread functions definded. It is not sure in which order
> the printout will happen! This case of two or more threads and its order of execution
> will be shown in a further lesson. 
> 
> A thread will also be terminated with a call of abort, return, DosExit, and a DosKillThread. 
> 
> For the definitions of _beginthread() and DosWaitThread() see this reference: http://os2.in.ru/forum/m019628.html
>  
> 
> 
>

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