[Ace-users] Re: [ace-bugs] [ACE Autoconf setup]: [ACE_HAS_POSIX_SEM_TIMEOUT neverdefined under LINUX]

[Johnny Willemsen]

Hi,

Thanks for reporting this. I have fixed this in the main archive.

Regards,

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

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>  This problem is simular to BUG# 2836 - but here are two patches.
>  And I'm not permitted to edit bugs in product ACE, so I can 
> not attach them.
> 
>    ACE VERSION: 5.5.9
> 
>    HOST MACHINE and OPERATING SYSTEM:
>    Linux 2.6.18.8-0.3-default #1 SMP
>    x86_64 x86_64 x86_64 GNU/Linux
>    SuSE 10.2
> 
>    COMPILER NAME AND VERSION (AND PATCHLEVEL):
>    gcc (GCC) 4.1.2 20061115 (prerelease) (SUSE Linux)
> 
>     SYNOPSIS:
> Neither ACE_HAS_POSIX_SEM_TIMEOUT or 
> ACE_HAS_POSIX_SEM_TIMEOUT_EMULATION can 
> be defined using ./configure, because there is no AC_DEFINE for it.
> 
>     DESCRIPTION:
> Using the traditional build (not with ./configure) everything 
> works fine.
> But using the ./configure script ACE_HAS_POSIX_SEM_TIMEOUT 
> will not defined, 
> because there is no test or anything in configure.ac for it.
> 
> In the traditional build this definition is set to 1 under Linux.
> 
> Without ACE_HAS_POSIX_SEM_TIMEOUT ACE will not wait on a 
> timed out acquire for 
> a semaphore.
> 
> This problem should be reproducible on all systems defining 
> ACE_HAS_POSIX_SEM 
> and using the configure script.
> 
> 
>     REPEAT BY:
> Write a program containing this:
>   ACE_Time_Value tv = ACE_Time_Value(10) + ACE_OS::gettimeofday();
>   ACE_Semaphore* sem = new ACE_Semaphore(0);
>   
>   sem->acquire(tv); // <-- should wait 10 seconds
> 
>   delete sem;
> 
> Using ./configure the program will not stop for 10 seconds. 
> Without using ./configure it will wait.
> 
>    PATCHES:
> --- ACE-5.5.9_orig/ACE_wrappers/configure.ac      2007-05-24 
> 05:45:22.000000000 +0000
> +++ ACE-5.5.9/ACE_wrappers/configure.ac   2007-07-27 
> 06:16:11.000000000 +0000
> @@ -4405,6 +4405,10 @@
>      ,
>      [AC_DEFINE([ACE_LACKS_CONDATTR_PSHARED])])
> 
> +  AC_CHECK_FUNC([pthread_cond_timedwait],
> +    [AC_DEFINE([ACE_HAS_POSIX_SEM_TIMEOUT])],
> +    [AC_DEFINE([ACE_HAS_POSIX_SEM_TIMEOUT_EMULATION])])
> +
>    AC_CHECK_FUNC([pthread_attr_setstackaddr],
>      ,
>      [AC_DEFINE([ACE_LACKS_THREAD_STACK_ADDR])])
> 
> --- ACE-5.5.9_orig/ACE_wrappers/m4/config_h.m4    2006-12-14 
> 00:14:22.000000000 +0000
> +++ ACE-5.5.9/ACE_wrappers/m4/config_h.m4 2007-07-27 
> 06:43:41.000000000 +0000
> @@ -516,6 +516,12 @@
>  [Platform supports POSIX real-time semaphores (e.g., VxWorks and
>     Solaris)])
> 
> +AH_TEMPLATE([ACE_HAS_POSIX_SEM_TIMEOUT],
> +[Compiler supports timed mutex acquisitions (e.g. 
> pthread_mutex_timedlock()).])
> +
> +AH_TEMPLATE([ACE_HAS_POSIX_SEM_TIMEOUT_EMULATION],
> +[Emulation for timed mutex acquisitions.])
> +
>  AH_TEMPLATE([ACE_HAS_POSIX_TIME],
>  [Platform supports the POSIX struct timespec type])
> 
> IMPORTANT NOTES:
> I don't know what ACE_HAS_POSIX_SEM_TIMEOUT_EMULATION is for, 
> but it looks 
> OK, if its defined here.
> Or the else entry in AC_CHECK_FUNC should be left empty.
> 
> This is only tested on one system under one operating system!
> 
> (Don't forget to run autoheader and autoconf after applying 
> the patches)
> 
> Thanks for developing and maintaing ACE,
> Peter
> 
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