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    Length: 3568 (0xdf0)
    Types: TextFile
    Notes: UNIX file
    Names: »chantest.c«

└─⟦0cfe73749⟧ Bits:30004154/config.imd SW95707I VP/ix MS-DOS emulator Rel. 1.1
└─⟦0cfe73749⟧ UNIX Filesystem
    └─⟦this⟧ »vc/new/usr/vpix/src/channels/chantest.c« 

TextFile

/*\r
 *   DOS program to test channel manager routines.\r
 *\r
 *   This program has been compiled and tested in both small and large models\r
 *   with MSC 5.0.\r
 */\r
\r
\r
/*\r
 *   include the standard stuff\r
 */\r
\r
#include <stdio.h>\r
#include <string.h>\r
#include <signal.h>\r
\r
\r
/*\r
 *   include the channel-library definitions\r
 */\r
\r
#include "doschan.h"\r
\r
\r
/*\r
 *   function prototypes\r
 */\r
\r
void main(void);\r
void exit_program(void);\r
void sighandler(void);\r
void exit(int exitval);\r
\r
\r
/*\r
 *   declare the assmbly-language interrupt handler\r
 */\r
\r
void far inthdl();\r
\r
\r
/*\r
 *   communication buffers\r
 */\r
\r
#define COMBUFSIZE  256             /* size of the buffers          */\r
char dosbuff[COMBUFSIZE];           /* DOS->UNIX buffer             */\r
char unixbuff[COMBUFSIZE];          /* UNIX->DOS buffer             */\r
\r
\r
/*\r
 *   other globals\r
 */\r
\r
int errors = 0;                     /* number of errors encountered */\r
CHANNEL_ID id;                      /* channel-ID                   */\r
\r
\r
/*\r
 *   The test program opens a channel called "test".  It then loops\r
 *   (until the Control-Break key is pressed), sending messages to the\r
 *   associated Emulation Module, which responds to each message with a\r
 *   reply.  The interrupt handler linked into this program (see\r
 *   "int.asm") prints these replies to the screen as they are received.\r
 */\r
\r
void main()\r
{\r
    CH_OPEN openstruct;                 /* channel-open structure       */\r
    CH_OPEN far *optr = &openstruct;    /* pointer to ch-open struct    */\r
    int msgcount = 1;                   /* number of messages sent      */\r
    int retcode;                        /* return code                  */\r
\r
    /*\r
     *   fill-in the channel-open structure\r
     */\r
\r
    openstruct.dosbuff  = (FPTR)dosbuff;        /* DOS->UNIX buffer  */\r
    openstruct.dbufflen = (long)COMBUFSIZE;     /* and length        */\r
    openstruct.unixbuff = (FPTR)unixbuff;       /* UNIX->DOS buffer  */\r
    openstruct.ubufflen = (long)COMBUFSIZE;     /* and length        */\r
    openstruct.funcptr  = (FPFV)inthdl;         /* interrupt-handler */\r
    strcpy(openstruct.chname, "test");          /* channel name      */\r
\r
    /*\r
     *   open the channel\r
     */\r
\r
    id = dos_ch_open(optr);\r
    if(id < 0)\r
    {\r
        errors++;\r
        printf("Failed to open channel: Error code: %d\n", ch_errno);\r
        exit_program();\r
    }\r
\r
    /*\r
     *   set up a Control-Break handler function\r
     *   (this is how we'll exit the program)\r
     */\r
\r
    signal(SIGINT, sighandler);\r
\r
    /*\r
     *   loop, sending messages\r
     */\r
\r
    while(1)\r
    {\r
        /*\r
         *   put a message in the DOS->UNIX buffer\r
         */\r
\r
        sprintf(dosbuff, "This is message #%d from DOS", msgcount++);\r
\r
        /*\r
         *   call the channel-send routine\r
         */\r
\r
        retcode = dos_ch_send(id);\r
        if(retcode != ERR_NONE)\r
        {\r
            printf("SEND failed at message #%d with error code %d\n",\r
                   msgcount - 1, ch_errno);\r
            errors++;\r
        }\r
    }\r
}\r
\r
\r
/*\r
 *   signal-handler -- close channel and exit\r
 */\r
\r
void sighandler()\r
{\r
    int retcode;\r
\r
    retcode = dos_ch_close(id);\r
    if(retcode != ERR_NONE)\r
    {\r
        errors++;\r
        printf("Failed to close channel: Error code: %d\n", ch_errno);\r
    }\r
    exit_program();\r
}\r
\r
\r
/*\r
 *   display the error-count and exit\r
 */\r
\r
void exit_program()\r
{\r
    printf("Total number of errors: %d\n", errors);\r
    exit(0);\r
}\r
\r
\r