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RE: macro

for more info reg. these types of macros refer to kernel newbies FAQ.
http://www.kernelnewbies.org/faq/.
Good explanation from Ben Collins.

Thanks,
sreedhar.



-----Original Message-----
From: K.R. Foley [mailto:kr@cybsft.com]
Sent: Wednesday, October 02, 2002 7:09 PM
To: Mohit Kalra
Cc: R!SC; kernelnewbies@nl.linux.org
Subject: Re: macro


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Mohit Kalra wrote:
| http://www.kernelnewbies.org/faq/index.php3#dowhile
|
| Regards,
| Mohit Kalra
|
| "It is a capital mistake to theorize before one has data.
| Insensibly one begins to twist facts to suit theories, instead of theories
| to suit facts."
| -SH
|
|
|

|                       "R!SC"

|                       <risc54@inwind.it>            To:
<kernelnewbies@nl.linux.org>

|                       Sent by:                      cc:

|                       kernelnewbies-bounce@n        Subject:  macro

|                       l.linux.org

|

|

|                       10/02/02 04:13 PM

|

|

|
|
|
| often i see in the linux kernel source, the macro written in following
| mode:
|
| #define macro_name do{
|       asm volatile{....}
|   while(0);
|
| why use do while(0) if the number of loop is one?
|
| Thanks
| R!SC
|
|
|
| --
| Kernelnewbies: Help each other learn about the Linux kernel.
| Archive:       http://mail.nl.linux.org/kernelnewbies/
| FAQ:           http://kernelnewbies.org/faq/
|

I think it is a method of creating a block that will always be grouped
together no matter how certain statements get evaluated.
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--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive:       http://mail.nl.linux.org/kernelnewbies/
FAQ:           http://kernelnewbies.org/faq/
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Kernelnewbies: Help each other learn about the Linux kernel.
Archive:       http://mail.nl.linux.org/kernelnewbies/
FAQ:           http://kernelnewbies.org/faq/