[uClibc] Request for: pthread_rwlock_timedwrlock

[Thomas Wehrspann]

Hi,

I'm using uClibc for some time know for my mini linux system. It's a great 
glibc replacement.
I only compiled a few libaries an programs on uClibc, but without problems, 
except one: VDR (Video Disk Recorder).
The missing lround function is no problem and the (now included) timegm (or 
gmtime?) i could work around.

But the newer versions of VDR introduced 'pthread_rwlock_timedwrlock' and 
'pthread_rwlock_timedrdlock'.
Regarding the list of missing SuSv3 function its in the standard.

Are you planning to implement these functions?
Or do you know a workaround?

The problematic code is:
--------------------------------------------------------------------------------------
cRwLock::cRwLock(bool PreferWriter)
{
  pthread_rwlockattr_t attr = { PreferWriter ? 
PTHREAD_RWLOCK_PREFER_WRITER_NP : PTHREAD_RWLOCK_PREFER_READER_NP };
  pthread_rwlock_init(&rwlock, &attr);
}

cRwLock::~cRwLock()
{
  pthread_rwlock_destroy(&rwlock);
}

bool cRwLock::Lock(bool Write, int TimeoutMs)
{
  int Result = 0;
  struct timespec abstime;
  if (TimeoutMs) {
     abstime.tv_sec = TimeoutMs / 1000;
     abstime.tv_nsec = (TimeoutMs % 1000) * 1000000;
     }
  if (Write)
     Result = TimeoutMs ? pthread_rwlock_timedwrlock(&rwlock, &abstime) : 
pthread_rwlock_wrlock(&rwlock);
  else
     Result = TimeoutMs ? pthread_rwlock_timedrdlock(&rwlock, &abstime) : 
pthread_rwlock_rdlock(&rwlock);
  return Result == 0;
}

void cRwLock::Unlock(void)
{
  pthread_rwlock_unlock(&rwlock);
}
--------------------------------------------------------------------------------------

Thanks and best regards,
Thomas