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changed bufconfig to support new bufconfig structure

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This commit is contained in:
David Schleef 2001-03-01 22:01:15 +00:00
parent c6093128a1
commit 10204606f9
1 changed files with 60 additions and 16 deletions
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76
comedi_config/comedi_config.c
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@ -94,6 +94,7 @@ int main(int argc,char *argv[])
{
comedi_devconfig it;
comedi_bufconfig bc;
comedi_devinfo devinfo;
int fd;
int c,i,num,k;
char *opts;
@ -160,7 +161,14 @@ int main(int argc,char *argv[])
fd=open(fn,O_RDWR);
if(fd<0){
perror(fn);
switch(errno){
case ENODEV:
fprintf(stderr,"comedi.o not loaded\n");
break;
default:
perror(fn);
break;
}
exit(1);
}
@ -274,23 +282,59 @@ int main(int argc,char *argv[])
}
}
// do buffer resizing
if(read_buf_size || write_buf_size)
{
memset(&bc, 0, sizeof(bc));
bc.read_size = read_buf_size * 1024;
bc.write_size = write_buf_size * 1024;
if(ioctl(fd, COMEDI_BUFCONFIG, &bc) < 0)
{
perror("buffer resize error");
if(read_buf_size || write_buf_size){
ret = ioctl(fd,COMEDI_DEVINFO,&devinfo);
if(ret<0){
perror("devinfo");
exit(1);
}
if(verbose)
{
if(read_buf_size) printf("%s read buffer resized to %i kilobytes\n",
fn, bc.read_size / 1024);
if(write_buf_size) printf("%s write buffer resized to %i kilobytes\n",
fn, bc.write_size / 1024);
if(devinfo.version_code < ((7<<8) | (57))){
fprintf(stderr,"Buffer resizing requires Comedi version >= 0.7.56\n");
exit(1);
}
}
// do buffer resizing
if(read_buf_size)
{
if(devinfo.read_subdevice){
fprintf(stderr,"warning: no read subdevice, resize ignored\n");
}else{
memset(&bc, 0, sizeof(bc));
bc.subdevice = devinfo.read_subdevice;
bc.maximum_size = read_buf_size * 1024;
bc.size = read_buf_size * 1024;
if(ioctl(fd, COMEDI_BUFCONFIG, &bc) < 0)
{
perror("buffer resize error");
exit(1);
}
if(verbose)
{
printf("%s read buffer resized to %i kilobytes\n",
fn, bc.size / 1024);
}
}
}
if(write_buf_size)
{
if(devinfo.write_subdevice){
fprintf(stderr,"warning: no write subdevice, resize ignored\n");
}else{
memset(&bc, 0, sizeof(bc));
bc.subdevice = devinfo.write_subdevice;
bc.maximum_size = write_buf_size * 1024;
bc.size = write_buf_size * 1024;
if(ioctl(fd, COMEDI_BUFCONFIG, &bc) < 0)
{
perror("buffer resize error");
exit(1);
}
if(verbose)
{
printf("%s write buffer resized to %i kilobytes\n",
fn, bc.size / 1024);
}
}
}