int main( void )
{
int i, n_queue;
int s, r;
mach_port_t destination;
kern_return_t err;
printf("in qlimit\n");
err = mach_port_allocate( mach_task_self(), MACH_PORT_RIGHT_RECEIVE,&destination );
if( err != KERN_SUCCESS )
{
perror( "Error : could not allocate any port\n" );
}
if (fork() == 0)
send_integer( destination, 9999);
else
{
receive_integer( destination, &r );
printf("The received integer is : %d\n", r );
}
mach_port_deallocate( mach_task_self(), destination );
return(r);
}
void send_packet(char *buffer, int length, char packetno, char checksum_type)
{
if (length == 128) send_short(SOH_CHR);
else send_short(STX_CHR);
send_short(packetno);
send_short(~packetno);
send_buffer(buffer,length);
switch (checksum_type)
{
case CRC_8: send_short(calc_8bit_checksum(buffer,length));
break;
case CRC_16: send_integer(calc_crc_checksum((unsigned char *)buffer,length));
break;
}
wait_for_xmit(tswitch,30);
};
int main( void )
{
int i, n_queue;
int s, r;
mach_port_t destination;
kern_return_t err;
err = mach_port_allocate( mach_task_self(), MACH_PORT_RIGHT_RECEIVE,&destination );
mach_port_insert_right(mach_task_self(), destination, destination, MACH_MSG_TYPE_MAKE_SEND);
printf("THE PORT IS %d.\n", destination);
send_integer( destination, 9999 );
mach_msg_type_name_t desired;
err = mach_port_extract_right(mach_task_self(), destination, MACH_MSG_TYPE_PORT_RECEIVE, &destination, &desired);
if (err)
{
error(1, err, "in mach_port_extract");
}
while (1);
mach_port_deallocate( mach_task_self(), destination );
return(r);
}