Bug 2990 - ACE_Thread_Mutex + priority inheritance
Summary: ACE_Thread_Mutex + priority inheritance
Status: NEW
Alias: None
Product: ACE
Classification: Unclassified
Component: ACE Core (show other bugs)
Version: 5.5.9
Hardware: All All
: P3 normal
Assignee: DOC Center Support List (internal)
URL:
Depends on:
Blocks: 2989
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Reported: 2007-07-16 16:02 CDT by Abdul Sowayan
Modified: 2008-03-20 16:04 CDT (History)
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Description Abdul Sowayan 2007-07-16 16:02:20 CDT 
The constructor of ACE_Thread_Mutex is as follows:

ACE_Thread_Mutex (const ACE_TCHAR *name=0, ACE_mutexattr_t *attributes=0)

Notice that there is an optional argument called attributes. What I'm trying to find out if there is a portable way under real-time operating systems to have ACE_Thread_Mutex employ a priority inheritance protocol to avoid the potential for priority inversion.

Is such a thing possible in ACE?

Thanks,
Abdul
Comment 1 Abdul Sowayan 2007-07-16 16:02:45 CDT 
I don't think this is possible with ACE (yet), but it should probably be
added, e.g., by creating a new ACE_Priority_Inheritance_Thread_Mutex
class that uses ACE_Thread_Mutex and sets this attributes parameter
portably!

Thanks,

        Doug
Comment 2 Johnny Willemsen 2007-07-17 05:25:46 CDT 
changed severity
Comment 3 Johnny Willemsen 2008-03-20 16:04:10 CDT 
for example vxworks delivery a priority inversion algorithm, when creating the mutex you have to specify a special flag. Seems the best way to add a new class that wraps this.