[ace-users] ACE_Semaphore::acquire (tv) error

[Johnny Willemsen]

Hi,

Probably you have used the autoconf way of compiling, please use the
traditional way.

Regards,

Johnny Willemsen
Remedy IT
Postbus 101
2650 AC  Berkel en Rodenrijs
The Netherlands
www.theaceorb.nl / www.remedy.nl =20

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> HI :
> PRF:
> ACE VERSION: 5.5.9
>=20
>   HOST MACHINE and OPERATING SYSTEM:
>        Red Hat Enterprise Linux AS release 4 (Nahant Update 3)  run
> on wmware workstation 6.0
>=20
>   COMPILER NAME AND VERSION (AND PATCHLEVEL):
>   gcc version 3.4.5 20051201 (Red Hat 3.4.5-2)
>=20
>   Question:
> I wirte simple test:
>   #include <ace/Semaphore.h>
>   #include <ace/Time_Value.h>
>   #include <ace/OS.h>
>   #include <iostream>
>=20
>  int main (int argc, char *argv[])
>  {
>    ACE_Semaphore sem (0);
>    ACE_Time_Value tv =3D ACE_OS::gettimeofday ();
>    tv.sec (tv.sec () + 5);
>    if (sem.acquire (tv) =3D=3D -1)                 // but it does't =
block
> , if use sem.acquire () it's block
>       perror ("");                             // it print "Operation
> not supported"
>    std::cout << "over" << std::endl;
>    return 0;
>  }
>  why use timeout acquire doesn't block? and why "Operation=20
> not supported"
>=20
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>=20
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>=20