Experimental Physics and
Industrial Control System

"Mark Rivers" <[email protected]> · Mon, 15 Dec 2008 15:56:59 -0600

Folks,

I am trying to write a driver for the Prosilica Gigabit Ethernet cameras under Linux.  They provide a pre-built library for controlling their cameras.  One of the notes for this library says the following:

* As the API use some signals internally, it is required to "protect" some of your system calls (such as sem_wait)  from been interupted. This can be done by calling the system call from within a loop and only exiting from it if there was no error or if errno is different from EINTR.

When I run an EPICS application that calls this library it crashes and this is the output of gdb:

(gdb) bt
#0  0x0808ce33 in SIGAction ()
#1  0x0821bf4d in ignoreSigAlarm (signal=14) at ../../../src/libCom/osi/os/posix/osdSignal.cpp:109
#2  <signal handler called>
#3  0x00110416 in __kernel_vsyscall ()
#4  0x002ce671 in select () from /lib/libc.so.6
#5  0x0808d21e in pPvMultiplexer::Body ()
#6  0x08090e00 in _ThreadFunction ()
#7  0x003b932f in start_thread () from /lib/libpthread.so.0
#8  0x002d620e in clone () from /lib/libc.so.6

The same application works fine under Windows, linked with a Prosilica DLL that uses the identical API to their Linux library.

Does anyone have ideas on how to fix this?

Thanks,
Mark

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System