OSELAS.Toolchain-2011.03.0: PTHREAD_PRIO_INHERIT undeclared for arm-1136jfs-linux-gcc

OSELAS.Toolchain-2011.03.0: PTHREAD_PRIO_INHERIT undeclared for arm-1136jfs-linux-gcc

[Daniel Lehne]

Hello,

in c++ the protocol PTHREAD_PRIO_INHERIT protocol for mutexes is 
available, but for c it is not available.
I've traced it up to features.h which declares __USE_UNIX98 for 
_XOPEN_SOURCE = 500. Once __USE_UNIX98 is set the protocols are 
available in pthread.h. How it is activated by c++, i don't know. It is 
confusing, because pthread_mutexattr_setprotocol() is declared but the 
protocols not.

simple example - reproduce on compile everytime:

/* test of problem PTHREAD_PRIO_INHERIT undeclared in pthread.h (only in 
gcc, cpp with g++ no problem) */
/* toolchain: 
OSELAS.Toolchain-2011.03.0/arm-1136jfs-linux-gnueabi/gcc-4.5.2-glibc-2.13-binutils-2.21-kernel-2.6.36-sanitized/bin/arm-1136jfs-linux-gnueabi-gcc 
*/
/* linked libs: pthread */

#include <pthread.h>

int main(int argc, char* argv[])
{
   int iRet;
   pthread_mutexattr_t csAttr;

   iRet = pthread_mutexattr_init(&csAttr);
   if (iRet == 0)
     iRet = pthread_mutexattr_settype(&csAttr, PTHREAD_MUTEX_ERRORCHECK);
   if (iRet == 0)
     iRet = pthread_mutexattr_setprotocol(&csAttr, 
PTHREAD_PRIO_INHERIT); // error: PTHREAD_PRIO_INHERIT undeclared

   pthread_mutexattr_destroy(&csAttr);
   return 0;
}

This example was build with the following configuration and output:
Building file: ../main.c
Invoking: GCC C Compiler
/opt/OSELAS.Toolchain-2011.03.0/arm-1136jfs-linux-gnueabi/gcc-4.5.2-glibc-2.13-binutils-2.21-kernel-2.6.36-sanitized/bin/arm-1136jfs-linux-gnueabi-gcc 
-O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.d" 
-o"main.o" "../main.c"
../main.c: In function 'main':
../main.c:14:51: error: 'PTHREAD_PRIO_INHERIT' undeclared (first use in 
this function)
../main.c:14:51: note: each undeclared identifier is reported only once 
for each function it appears in
make: *** [main.o] Error 1
make: Target `all' not remade because of errors.

Why this protocol is only for __USE_UNIX98 allowed? Is there a solution 
to use this protocol PTHREAD_PRIO_INHERIT  with gcc?

Best regards!

--
For unsubscribe information see http://sourceware.org/lists.html#faq

Re: OSELAS.Toolchain-2011.03.0: PTHREAD_PRIO_INHERIT undeclared for arm-1136jfs-linux-gcc

[Khem Raj]

On (04/01/12 13:34), Daniel Lehne wrote:
> Hello,
> 
> in c++ the protocol PTHREAD_PRIO_INHERIT protocol for mutexes is
> available, but for c it is not available.
> I've traced it up to features.h which declares __USE_UNIX98 for
> _XOPEN_SOURCE = 500. Once __USE_UNIX98 is set the protocols are
> available in pthread.h. How it is activated by c++, i don't know. It
> is confusing, because pthread_mutexattr_setprotocol() is declared
> but the protocols not.
> 
> simple example - reproduce on compile everytime:
> 
> /* test of problem PTHREAD_PRIO_INHERIT undeclared in pthread.h
> (only in gcc, cpp with g++ no problem) */
> /* toolchain: OSELAS.Toolchain-2011.03.0/arm-1136jfs-linux-gnueabi/gcc-4.5.2-glibc-2.13-binutils-2.21-kernel-2.6.36-sanitized/bin/arm-1136jfs-linux-gnueabi-gcc
> */
> /* linked libs: pthread */
> 
> #include <pthread.h>
> 
> int main(int argc, char* argv[])
> {
>   int iRet;
>   pthread_mutexattr_t csAttr;
> 
>   iRet = pthread_mutexattr_init(&csAttr);
>   if (iRet == 0)
>     iRet = pthread_mutexattr_settype(&csAttr, PTHREAD_MUTEX_ERRORCHECK);
>   if (iRet == 0)
>     iRet = pthread_mutexattr_setprotocol(&csAttr,
> PTHREAD_PRIO_INHERIT); // error: PTHREAD_PRIO_INHERIT undeclared
> 
>   pthread_mutexattr_destroy(&csAttr);
>   return 0;
> }
> 
> This example was build with the following configuration and output:
> Building file: ../main.c
> Invoking: GCC C Compiler
> /opt/OSELAS.Toolchain-2011.03.0/arm-1136jfs-linux-gnueabi/gcc-4.5.2-glibc-2.13-binutils-2.21-kernel-2.6.36-sanitized/bin/arm-1136jfs-linux-gnueabi-gcc
> -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.d"
> -o"main.o" "../main.c"
> ../main.c: In function 'main':
> ../main.c:14:51: error: 'PTHREAD_PRIO_INHERIT' undeclared (first use
> in this function)
> ../main.c:14:51: note: each undeclared identifier is reported only
> once for each function it appears in
> make: *** [main.o] Error 1
> make: Target `all' not remade because of errors.
> 
> Why this protocol is only for __USE_UNIX98 allowed? Is there a
> solution to use this protocol PTHREAD_PRIO_INHERIT  with gcc?

add #define _GNU_SOURCE
at the top of your source file.

--
For unsubscribe information see http://sourceware.org/lists.html#faq

Re: OSELAS.Toolchain-2011.03.0: PTHREAD_PRIO_INHERIT undeclared for arm-1136jfs-linux-gcc

[Daniel Lehne]

On 04.1.2012 г. 20:06, Khem Raj wrote:
> On (04/01/12 13:34), Daniel Lehne wrote:
>> Hello,
>>
>> Why this protocol is only for __USE_UNIX98 allowed? Is there a
>> solution to use this protocol PTHREAD_PRIO_INHERIT  with gcc?
> add #define _GNU_SOURCE
> at the top of your source file.
>
>
I've tried it already __GNU_SOURCE don't works because of _XOPEN_SOURCE 
= 600. I don't want to make changes in features.h. May i will set 
__USE_UNIX98 directly in source before the usage of phtread.h. Your 
answer shows me, this PTHREAD_PRIO_INHERIT should be available also for 
c source (gcc).

Thanks!


--
For unsubscribe information see http://sourceware.org/lists.html#faq

Re: OSELAS.Toolchain-2011.03.0: PTHREAD_PRIO_INHERIT undeclared for arm-1136jfs-linux-gcc

[Khem Raj]

On Wed, Jan 4, 2012 at 10:31 PM, Daniel Lehne
<daniel.lehne@amk-drives.bg> wrote:
> On 04.1.2012 г. 20:06, Khem Raj wrote:
>>
>> On (04/01/12 13:34), Daniel Lehne wrote:
>>>
>>> Hello,
>>>
>>> Why this protocol is only for __USE_UNIX98 allowed? Is there a
>>> solution to use this protocol PTHREAD_PRIO_INHERIT  with gcc?
>>
>> add #define _GNU_SOURCE
>> at the top of your source file.
>>
>>
> I've tried it already __GNU_SOURCE don't works because of _XOPEN_SOURCE =
> 600. I don't want to make changes in features.h. May i will set __USE_UNIX98
> directly in source before the usage of phtread.h. Your answer shows me, this
> PTHREAD_PRIO_INHERIT should be available also for c source (gcc).
>

take your source add
#define _GNU_SOURCE to it on top
or add it on cmdline like below

-D_GNU_SOURCE

is that too hard ?

> Thanks!
>

--
For unsubscribe information see http://sourceware.org/lists.html#faq

Re: OSELAS.Toolchain-2011.03.0: PTHREAD_PRIO_INHERIT undeclared for arm-1136jfs-linux-gcc

[Daniel Lehne]

On 05.1.2012 г. 20:08, Khem Raj wrote:
> On Wed, Jan 4, 2012 at 10:31 PM, Daniel Lehne
> <daniel.lehne@amk-drives.bg>  wrote:
>> On 04.1.2012 г. 20:06, Khem Raj wrote:
>>> On (04/01/12 13:34), Daniel Lehne wrote:
>>>> Hello,
>>>>
>>>> Why this protocol is only for __USE_UNIX98 allowed? Is there a
>>>> solution to use this protocol PTHREAD_PRIO_INHERIT  with gcc?
>>> add #define _GNU_SOURCE
>>> at the top of your source file.
>>>
>>>
>> I've tried it already __GNU_SOURCE don't works because of _XOPEN_SOURCE =
>> 600. I don't want to make changes in features.h. May i will set __USE_UNIX98
>> directly in source before the usage of phtread.h. Your answer shows me, this
>> PTHREAD_PRIO_INHERIT should be available also for c source (gcc).
>>
> take your source add
> #define _GNU_SOURCE to it on top
> or add it on cmdline like below
>
> -D_GNU_SOURCE
>
> is that too hard ?
>
>> Thanks!
>>
>>

Thank for the correction. Of course _GNU_SOURCE works, when it's defined(spelled) correctly.


--
For unsubscribe information see http://sourceware.org/lists.html#faq