Revert "uitest: make child soffice process die when parent dies"

This reverts commit d35840a211, now that
43aef04d77 "Reliably wait for soffice to
terminate" makes sure that no soffice-related processes are left behind by
UITests.  Using PR_SET_PDEATHSIG had the following drawbacks:

* It defeats debugging if a runaway process is forcefully killed by the test
  framework.  (And there are already higher-layer mechanisms in place for the
  reliable termination of runaway tinderbox builds, see the commit message of
  43aef04d77 mentioned above.)

* It is brittle in that it can terminate soffice-related processes too early, as
  the signal is sent as soon as the parent's thread that spawned the child (and
  not the parent process as a whole) terminates.

* It is Linux-only.

Change-Id: Ia07f5dbaafc824bad0dfbdb1a2aabe6d5508741b
Reviewed-on: https://gerrit.libreoffice.org/80186
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

desktop/source/app/cmdlineargs.cxx

@@ -42,11 +42,6 @@
 #include <osl/file.hxx>
 #include <sal/log.hxx>
 
-#ifdef LINUX
-#include <sys/prctl.h>
-#include <signal.h>
-#endif
-
 using namespace com::sun::star::lang;
 using namespace com::sun::star::uri;
 using namespace com::sun::star::uno;
@@ -367,15 +362,6 @@ void CommandLineArgs::ParseCommandLine_Impl( Supplier& supplier )
             {
                 // Do nothing, accept only for backward compatibility
             }
-            else if ( oArg == "dont-survive-parent" )
-            {
-// only supported on linux for now
-#ifdef LINUX
-            prctl(PR_SET_PDEATHSIG, SIGKILL);
-#else
-            fprintf(stderr, "Warning: dont-survive-parent is not supported on this platform (yet).\n");
-#endif
-            }
             else if ( oArg == "nologo" )
             {
                 m_nologo = true;

desktop/source/app/cmdlinehelp.cxx

@@ -112,8 +112,7 @@ namespace desktop
         "Developer arguments:                                                           \n"
         "   --terminate_after_init                                                      \n"
         "                       Exit after initialization complete (no documents loaded)\n"
-        "   --eventtesting      Exit after loading documents.                           \n"
-        "   --dont-survive-parent Exit when the parent exits (linux only)               \n\n"
+        "   --eventtesting      Exit after loading documents.                           \n\n"
         "New document creation arguments:                                               \n"
         "The arguments create an empty document of specified kind. Only one of them may \n"
         "be used in one command line. If filenames are specified after an argument,     \n"

desktop/unx/source/args.c

@@ -9,10 +9,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <osl/process.h>
-#ifdef LINUX
-#include <sys/prctl.h>
-#include <signal.h>
-#endif
 
 #include "args.h"
 
@@ -125,15 +121,6 @@ Args *args_parse (void)
                     args->pPageinType = pArgDescr[j].pPageinType;
                 break;
             }
-            if (rtl_ustr_ascii_compare_WithLength(
-                    arg, length, "dont-survive-parent")
-                == 0)
-            {
-#ifdef LINUX
-                prctl(PR_SET_PDEATHSIG, SIGKILL);
-#endif
-                break;
-            }
         }
     }
 

uitest/libreoffice/connection.py

@@ -66,7 +66,7 @@ class OfficeConnection:
         argv = [soffice, "--accept=" + socket + ";urp",
                 "-env:UserInstallation=" + userdir,
                 "--quickstart=no", "--nofirststartwizard",
-                "--norestore", "--nologo", "--dont-survive-parent"]
+                "--norestore", "--nologo"]
         if "--valgrind" in self.args:
             argv.append("--valgrind")