* can __exchange_and_add be used from outside?
@ 2007-03-27 13:12 Juan Carlos Franzoy
2007-03-27 14:02 ` Ian Lance Taylor
0 siblings, 1 reply; 2+ messages in thread
From: Juan Carlos Franzoy @ 2007-03-27 13:12 UTC (permalink / raw)
To: gcc-help
Hello. I write because I was wondering if __exchange_and_add can be used from user code or it's an internal detail of libstdc++.
I have to implement a library with AtomicSet and AtomicAdd. The library must be portable across solaris/sparc, linux/x86 and hpux11/parisc.
If the answer is no, do anybody know how to do it?
Thanks.
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Juan Carlos Franzoy
Proyect Leader
mailto:jfranzoy@yahoo.com.ar
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: can __exchange_and_add be used from outside?
2007-03-27 13:12 can __exchange_and_add be used from outside? Juan Carlos Franzoy
@ 2007-03-27 14:02 ` Ian Lance Taylor
0 siblings, 0 replies; 2+ messages in thread
From: Ian Lance Taylor @ 2007-03-27 14:02 UTC (permalink / raw)
To: Juan Carlos Franzoy; +Cc: gcc-help
Juan Carlos Franzoy <jfranzoy@yahoo.com.ar> writes:
> Hello. I write because I was wondering if __exchange_and_add can be used from user code or it's an internal detail of libstdc++.
>
> I have to implement a library with AtomicSet and AtomicAdd. The library must be portable across solaris/sparc, linux/x86 and hpux11/parisc.
>
> If the answer is no, do anybody know how to do it?
gcc provides these calls as extensions:
http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Atomic-Builtins.html
Ian
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