Experimental Physics and
Industrial Control System

Hello EPICS community!

I wrote a simple multithread CA client program like this:

 //some pvs_res init

 ca_context_create(ca_enable_preemptive_callback);

 my_ca_context = ca_current_context();

 for(unsigned int i = 0; i < pvs_cnt; i++) //pvs_cnt = 4000;

 {

     ca_create_channel(pvs_res[i], NULL, NULL, CA_PRIORITY_DEFAULT, &pvs_res[i].pv_chid);

 }

 ca_status = ca_pend_io(1.0);

 ... ...

Everything was OK in Windows compiled with Visual Studio 2017. But when I compiled it in Linux, the program crashed when exec this line:

 ca_status = ca_pend_io(1.0);

The last message showed in the terminal was:

 pthread_create error Invalid argument

 errlogInit failed

EPICS base is 7.0.7 release version with default configure.

My linux environment:

 ~ uname -a

Linux debian 6.1.0-6-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.15-1 (2023-03-05) x86_64 GNU/Linux

~ ldd --version

ldd (Debian GLIBC 2.36-9) 2.36

~ gcc -v

Using built-in specs.

COLLECT_GCC=gcc

COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/12/lto-wrapper

OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa

OFFLOAD_TARGET_DEFAULT=1

Target: x86_64-linux-gnu

Configured with: ../src/configure -v --with-pkgversion='Debian 12.2.0-14' --with-bugurl=file:///usr/share/doc/gcc-12/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-12 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/gcc-12-bTRWOB/gcc-12-12.2.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-12-bTRWOB/gcc-12-12.2.0/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu

Thread model: posix

Supported LTO compression algorithms: zlib zstd

gcc version 12.2.0 (Debian 12.2.0-14) 

Any help will be appreciated.

Thank you very much!