Experimental Physics and
Industrial Control System

Folks,

 

I am quite sure this is a bug in base.  I modified libCom/osi/epicsTime.cpp so it just prints an error, rather than throwing an exception, if epicsTimeGetCurrent() returns an error:

 

corvette:src/libCom/osi>cvs diff epicsTime.cpp

Index: epicsTime.cpp

===================================================================

RCS file: /net/phoebus/epicsmgr/cvsroot/epics/base/src/libCom/osi/epicsTime.cpp,v

retrieving revision 1.25.2.20

diff -u -r1.25.2.20 epicsTime.cpp

--- epicsTime.cpp       18 Apr 2008 18:39:19 -0000      1.25.2.20

+++ epicsTime.cpp       11 May 2009 20:30:01 -0000

@@ -192,7 +192,8 @@

     epicsTimeStamp current;

     int status = epicsTimeGetCurrent (&current);

     if (status) {

-        throwWithLocation ( unableToFetchCurrentTime () );

+printf("epicsTime::getCurrent, unable to fetch current time\n");

+        //throwWithLocation ( unableToFetchCurrentTime () );

     }

     return epicsTime ( current );

 }

 

 

With this change I observe that when the IOC starts up I see one of those error messages, and no more.  I think we still have a timing problem where the generalTime system is not up and running on Windows before it is first being called.  I have been using this patched version of 3.14.10 for a while with no problems, but my application recently got more complex, with more DLLs being loaded when the application starts.  I believe that is slowing things down enough when the application starts that we are now seeing another problem.  The version of osi/os/WIN32/osdTime.cpp that I am using is effectively 1.38.2.8, which Andrew and I worked on to fix similar problems in 3.14.10.

 

$ ../../bin/win32-x86/prosilicaApp.exe st.cmd.win32

epicsTime::getCurrent, unable to fetch current time

< envPaths.win32

epicsEnvSet("ARCH","win32-x86")

…

 

Mark

 

 

 

Folks,

 

I am getting a crash when I start the areaDetector IOC on win32-x86 and win32-x86-debug.  It looks like it might be a problem in base, perhaps related to the bug Andrew and I previously fixed with the timer not being created before it was being used.  Here is the trace.  The problem is in the 7’th line from the bottom, copied here:

 

simDetectorApp.exe!throwExceptionWithLocation<epicsTime::unableToFetchCurrentTime>(const epicsTime::unableToFetchCurrentTime & parm={...}, const char * pFileName=0x00616620, unsigned int lineNo=195)  Line 74            C++

 

This is happening right when the IOC starts up, even without an st.cmd file.

 

Mark

 

 

 

            ntdll.dll!7c90eb94()       

            [Frames below may be incorrect and/or missing, no symbols loaded for ntdll.dll]

            user32.dll!7e419418()    

            user32.dll!7e42dba8()   

            user32.dll!7e42593f()    

            user32.dll!7e43a91e()    

>          simDetectorApp.exe!_output_s_l(_iobuf * stream=0x00000000, const char * format=0x001449b0, localeinfo_struct * plocinfo=0x00144690, char * argptr=0x00012012)  Line 1164 + 0x17 bytes           C++

            user32.dll!7e466278()    

            user32.dll!7e450617()    

            user32.dll!7e4505cf()    

            simDetectorApp.exe!__crtMessageBoxA(const char * lpText=0x003b8620, const char * lpCaption=0x0061fe50, unsigned int uType=73746)  Line 145      C

            simDetectorApp.exe!__crtMessageWindowA(int nRptType=1, const char * szFile=0x00000000, const char * szLine=0x00000000, const char * szModule=0x00000000, const char * szUserMessage=0x003b9694)  Line 420 + 0x16 bytes            C

            simDetectorApp.exe!_VCrtDbgReportA(int nRptType=1, const char * szFile=0x00000000, int nLine=0, const char * szModule=0x00000000, const char * szFormat=0x0061e2c0, char * arglist=0x003be728)  Line 417 + 0x28 bytes     C

            simDetectorApp.exe!_CrtDbgReportV(int nRptType=1, const char * szFile=0x00000000, int nLine=0, const char * szModule=0x00000000, const char * szFormat=0x0061e2c0, char * arglist=0x003be728)  Line 300 + 0x1d bytes    C

            simDetectorApp.exe!_CrtDbgReport(int nRptType=1, const char * szFile=0x00000000, int nLine=0, const char * szModule=0x00000000, const char * szFormat=0x0061e2c0, ...)  Line 317 + 0x1d bytes    C

            simDetectorApp.exe!_NMSG_WRITE(int rterrnum=10)  Line 197 + 0x18 bytes       C

            simDetectorApp.exe!abort()  Line 59 + 0x7 bytes            C

            simDetectorApp.exe!terminate()  Line 136           C++

            simDetectorApp.exe!__CxxUnhandledExceptionFilter(_EXCEPTION_POINTERS * pPtrs=0x003bf1cc)  Line 72      C++

            kernel32.dll!7c863016()  

            simDetectorApp.exe!_XcptFilter(unsigned long xcptnum=3765269347, _EXCEPTION_POINTERS * pxcptinfoptrs=0x003bf1cc)  Line 237 + 0xa bytes           C

            simDetectorApp.exe!_callthreadstartex()  Line 350 + 0x17 bytes  C

            simDetectorApp.exe!@_EH4_CallFilterFunc@8()  + 0x12 bytes   Asm

            simDetectorApp.exe!_except_handler4(_EXCEPTION_RECORD * ExceptionRecord=0x003bf2c0, _EXCEPTION_REGISTRATION_RECORD * EstablisherFrame=0x003bff98, _CONTEXT * ContextRecord=0x003bf2e0, void * DispatcherContext=0x003bf294)  + 0xb7 bytes   C

            ntdll.dll!7c9037bf()        

            ntdll.dll!7c90378b()       

            ntdll.dll!7c937860()       

            ntdll.dll!7c90eafa()        

            kernel32.dll!7c812a5b()

            ntdll.dll!7c9106eb()       

            ntdll.dll!7c911538()       

            kernel32.dll!7c812a5b()

            ntdll.dll!7c911596()       

            ntdll.dll!7c9106eb()       

            ntdll.dll!7c9106eb()       

            ntdll.dll!7c911538()       

            ntdll.dll!7c919a9c()       

            ntdll.dll!7c919b3f()        

            ntdll.dll!7c919aeb()       

            ntdll.dll!7c911538()       

            ntdll.dll!7c919aeb()       

            ntdll.dll!7c919d27()       

            ntdll.dll!7c919a9c()       

            ntdll.dll!7c919b3f()        

            ntdll.dll!7c919aeb()       

            kernel32.dll!7c812a5b()

            simDetectorApp.exe!fetchWin32ThreadGlobal()  Line 183 + 0x11 bytes    C

            simDetectorApp.exe!_CxxThrowException(void * pExceptionObject=0x003bf650, const _s__ThrowInfo * pThrowInfo=0x0063e0e0)  Line 166         C++

            simDetectorApp.exe!throwExceptionWithLocation<epicsTime::unableToFetchCurrentTime>(const epicsTime::unableToFetchCurrentTime & parm={...}, const char * pFileName=0x00616620, unsigned int lineNo=195)  Line 74            C++

            simDetectorApp.exe!epicsTime::getCurrent()  Line 195 + 0x18 bytes        C++

            simDetectorApp.exe!epicsThreadCallEntryPoint(void * pPvt=0x003a96f4)  Line 68 + 0xc bytes     C++

            simDetectorApp.exe!epicsWin32ThreadEntry(void * lpParameter=0x003a9a68)  Line 498 + 0x11 bytes      C

            simDetectorApp.exe!_callthreadstartex()  Line 348 + 0xf bytes    C

            simDetectorApp.exe!_threadstartex(void * ptd=0x003a9ac8)  Line 331     C

            kernel32.dll!7c80b683()