Re: terminate called after throwing an instance of 'epicsMutex::invalidMutex'

[Marty Kraimer <mrkraimer@comcast.net>]

On 06/06/2017 05:05 AM, Michael Davidsaver wrote:
> On 06/04/2017 09:16 PM, Marty Kraimer wrote:
> > On 06/04/2017 01:32 PM, Heinz Junkes wrote:
> > > I replaced pvaClientCPP and pvAccessCPP with the code you provide
> > >
> > > Now the tests runs without error:
> > Good news!!!
> >
> > I did make some more changes to
> > https://github.com/mrkraimer/pvAccessCPP/
> >
> > The changes resulted from suggestions made by Michael Davidsaver.
> Well, at least some of them.
>
> FYI. this is what I'm doing
>
> https://github.com/mdavidsaver/pvAccessCPP/commit/6926d911eeb1b8ccb4da14ed7717f381379a7434
>
> This is only the first part though, dealing with the problems in
> caProvider.cpp.
>
> The larger issue I see is that the "conventional" implementations of
> ChannelProviderFactory::sharedInstance() has the factory keep a strong
> ChannelProvider reference.
>
> For my work on P4P server side this was causing problems as all python
> objects should be destroyed well before the global provider factory
> map<> is destroyed.  This resulted in an attempt to take the GIL after
> it had been free'd.  So if a removeProvider() is omitted, then the
> process crashes on exit.
>
> My first change is to turn this strong ref. into a weak ref.  This means
> that destruction of the registry no longer has side-effects related to
> provider destruction.
>
> In clearing up some potential global ctor/dtor ordering issues, the
> global registry (a la. getChannelProviderRegistry() ) is no longer
> free'd.  As it hold only weak refs. there seemed to me no downside other
> than a "reachable" leak.

I tried building with

https://github.com/mdavidsaver/pvAccessCPP


But pvaSrv does not build.
I get

make[2]: Entering directory '/home/epicsv4/master/pvaSrv/src/O.linux-x86_64'
/usr/bin/g++ -o softIocPVA 
-L/home/epicsv4/master/pvaSrv/lib/linux-x86_64 
-L/home/epicsv4/master/pvAccessCPP/lib/linux-x86_64 
-L/home/epicsv4/master/pvDataCPP/lib/linux-x86_64 
-L/home/install/epics/base-3.15.5/lib/linux-x86_64 
-Wl,-rpath,/home/epicsv4/master/pvaSrv/lib/linux-x86_64 
-Wl,-rpath,/home/epicsv4/master/pvAccessCPP/lib/linux-x86_64 
-Wl,-rpath,/home/epicsv4/master/pvDataCPP/lib/linux-x86_64 
-Wl,-rpath,/home/install/epics/base-3.15.5/lib/linux-x86_64 -rdynamic 
-m64            softMain.o softIocPVA_registerRecordDeviceDriver.o    
-lpvaSrv -lpvAccess -lpvData -ldbRecStd -ldbCore -lca -lCom
softIocPVA_registerRecordDeviceDriver.o: In function 
`softIocPVA_registerRecordDeviceDriver':
/home/epicsv4/master/pvaSrv/src/O.linux-x86_64/softIocPVA_registerRecordDeviceDriver.cpp:245: 
undefined reference to `pvar_func_registerStartPVAServer'
collect2: error: ld returned 1 exit status
/home/install/epics/base/configure/RULES_BUILD:201: recipe for target 
'softIocPVA' failed
make[2]: *** [softIocPVA] Error 1
make[2]: Leaving directory '/home/epicsv4/master/pvaSrv/src/O.linux-x86_64'
/home/install/epics/base/configure/RULES_ARCHS:58: recipe for target 
'install.linux-x86_64' failed
make[1]: *** [install.linux-x86_64] Error 2
make[1]: Leaving directory '/home/epicsv4/master/pvaSrv/src'
/home/install/epics/base/configure/RULES_DIRS:84: recipe for target 
'src.install' failed
make: *** [src.install] Error 2
mrk>

https://github.com/mdavidsaver/pvAccessCPP/