Rethrow abi::__forced_unwind in wxThread code under Unix.
We must always rethrow the special abi::__forced_unwind exception when handling exception in threads under Linux as the NPTL simply terminates the process at first opportunity if this exception is not rethrown. See http://udrepper.livejournal.com/21541.html for more details. Closes #14626. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72531 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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Vadim Zeitlin
parent
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commit
e02ea2030c
88
configure
vendored
88
configure
vendored
@ -2809,6 +2809,37 @@ $as_echo "$ac_res" >&6; }
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} # ac_fn_c_check_header_compile
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# ac_fn_cxx_check_header_compile LINENO HEADER VAR INCLUDES
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# ---------------------------------------------------------
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# Tests whether HEADER exists and can be compiled using the include files in
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# INCLUDES, setting the cache variable VAR accordingly.
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ac_fn_cxx_check_header_compile ()
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{
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as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
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$as_echo_n "checking for $2... " >&6; }
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if eval \${$3+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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$4
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#include <$2>
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_ACEOF
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if ac_fn_cxx_try_compile "$LINENO"; then :
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eval "$3=yes"
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else
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eval "$3=no"
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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eval ac_res=\$$3
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
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$as_echo "$ac_res" >&6; }
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eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
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} # ac_fn_cxx_check_header_compile
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# ac_fn_c_compute_int LINENO EXPR VAR INCLUDES
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# --------------------------------------------
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# Tries to find the compile-time value of EXPR in a program that includes
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@ -2992,37 +3023,6 @@ rm -f conftest.val
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} # ac_fn_c_compute_int
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# ac_fn_cxx_check_header_compile LINENO HEADER VAR INCLUDES
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# ---------------------------------------------------------
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# Tests whether HEADER exists and can be compiled using the include files in
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# INCLUDES, setting the cache variable VAR accordingly.
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ac_fn_cxx_check_header_compile ()
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{
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as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
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$as_echo_n "checking for $2... " >&6; }
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if eval \${$3+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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$4
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#include <$2>
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_ACEOF
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if ac_fn_cxx_try_compile "$LINENO"; then :
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eval "$3=yes"
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else
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eval "$3=no"
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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eval ac_res=\$$3
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
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$as_echo "$ac_res" >&6; }
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eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
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} # ac_fn_cxx_check_header_compile
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# ac_fn_cxx_check_type LINENO TYPE VAR INCLUDES
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# ---------------------------------------------
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# Tests whether TYPE exists after having included INCLUDES, setting cache
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@ -20045,6 +20045,32 @@ fi
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done
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ac_ext=cpp
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ac_cpp='$CXXCPP $CPPFLAGS'
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ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
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ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
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ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
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for ac_header in cxxabi.h
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do :
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ac_fn_cxx_check_header_compile "$LINENO" "cxxabi.h" "ac_cv_header_cxxabi_h" "$ac_includes_default
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"
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if test "x$ac_cv_header_cxxabi_h" = xyes; then :
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cat >>confdefs.h <<_ACEOF
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#define HAVE_CXXABI_H 1
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_ACEOF
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fi
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done
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ac_ext=c
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ac_cpp='$CPP $CPPFLAGS'
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ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
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ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
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ac_compiler_gnu=$ac_cv_c_compiler_gnu
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fi
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@ -1591,9 +1591,15 @@ case "${host}" in
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;;
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esac
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dnl POSIX needs this for select(), but old systems don't have it
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if test "$USE_UNIX" = 1 ; then
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dnl POSIX needs this for select(), but old systems don't have it
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AC_CHECK_HEADERS([sys/select.h],,, [AC_INCLUDES_DEFAULT()])
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dnl Header defining C++ ABI is currently only available with g++ but test
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dnl for it unconditionally in case it becomes supported by other compilers.
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AC_LANG_PUSH(C++)
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AC_CHECK_HEADERS([cxxabi.h],,, [AC_INCLUDES_DEFAULT()])
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AC_LANG_POP()
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fi
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dnl ---------------------------------------------------------------------------
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@ -1225,6 +1225,9 @@
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/* Define if you have the <sys/select.h> header file. */
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#undef HAVE_SYS_SELECT_H
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/* Define if you have <cxxabi.h> header file. */
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#undef HAVE_CXXABI_H
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/* Define if fdopen is available. */
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#undef HAVE_FDOPEN
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@ -54,6 +54,10 @@
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#include <thread.h>
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#endif
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#ifdef HAVE_CXXABI_H
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#include <cxxabi.h>
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#endif
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// we use wxFFile under Linux in GetCPUCount()
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#ifdef __LINUX__
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#include "wx/ffile.h"
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@ -857,6 +861,18 @@ void *wxThreadInternal::PthreadStart(wxThread *thread)
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wxT("Thread %p Entry() returned %lu."),
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THR_ID(pthread), wxPtrToUInt(pthread->m_exitcode));
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}
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#ifdef HAVE_CXXABI_H
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// When using common C++ ABI under Linux we must always rethrow this
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// special exception used to unwind the stack when the thread was
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// cancelled, otherwise the thread library would simply terminate the
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// program, see http://udrepper.livejournal.com/21541.html
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catch ( abi::__forced_unwind& )
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{
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wxCriticalSectionLocker lock(thread->m_critsect);
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pthread->SetState(STATE_EXITED);
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throw;
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}
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#endif // HAVE_CXXABI_H
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wxCATCH_ALL( wxTheApp->OnUnhandledException(); )
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{
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