Hi all, The following code demonstrates thread_specific_ptr problem while loading/unloading a shared library. Apparently some resource is not cleanned up. Can somebody comment on this? Thanks, Arkadiy lib.cpp: ------- #include <string> #include <boost/thread.hpp> boost::thread_specific_ptr < std::string > tls_with_mmap; main.cpp: ---------- #include <stdint.h> #include <stdlib.h> #include <dlfcn.h> #include <stdio.h> int main( int argc, const char* argv[]) { if( argc < 3 ) { printf("usage %s <dlname> <repeat count>\n", argv[0]); return 1; } const char* dlname = argv[1]; uint16_t iters = atoi(argv[2]); for( uint16_t i = 0; i < iters; ++i ) { printf("attempt %02d\n", i); void* handle = ::dlopen(dlname, RTLD_NOW ); if( handle ) ::dlclose(handle); else { printf("dlopen failed\n"); break; } } return 0; } build.sh: -------- BOOST_VER=38 CCFLAGS="-Wcomment -Wformat -Wmissing-braces -Wparentheses -Wreturn-type -Wsign-compare -Wstrict-aliasing -Wswitch -Wtrigraphs -Wunknown-pragmas -Wunused-function -Wunused-label -Wunused-value -Wunused-variable -Wextra -g -O0 -fno-inline -fexceptions -ftemplate-depth-128 -Wnon-virtual-dtor -I/usr/include/nptl -I/builder/3rdParty/boost/v${BOOST_VER}.0/include -D__NO_INLINE__=1 -D_DEBUG -DDEBUG" g++ -x c++ -m32 ${CCFLAGS} -fPIC -pipe -o "lib.o" -c "lib.cpp" g++ -m32 -o boost_thread_test.so -shared -Wl,-Bsymbolic -Wl,-h -Wl,boost_thread_test.so -Wl,--no-undefined -Wl,--start-group lib.o /builder/3rdParty/boost/v${BOOST_VER}.0/lib32/gcc-3.4.6/libboost_thread-mt-d.a /usr/lib/libpthread.so -lstdc++ -lc -lm -Wl,--end-group g++ -x c++ -m32 ${CCFLAGS} -fPIC -pipe -o "main.o" -c "main.cpp" g++ -m32 -o boost_thread_test.exe -Wl,--start-group main.o /usr/lib/libpthread.so /usr/lib/libdl.so -lstdc++ -lc -lm -Wl,--end-group Linux version: -------------- Red Hat Enterprise Linux ES release 4 (Nahant Update 4) Invocation: -----------
./boost_thread_test.exe ./boost_thread_test.so 600 ... attempt 509 attempt 510 attempt 511 boost_thread_test.exe: libs/thread/src/pthread/thread.cpp:102: void boost::detail::<unnamed>::create_current_thread_tls_key(): Assertion `!pthread_key_create(¤t_thread_tls_key,&tls_destructor)' failed. Aborted