Introduce lok_preinit() to preload all registered UNO implementations

Intended to be used from an application like the LibreOffice On-Line
server so that it can be called in a process that then will call
fork() several times, and much space consuming data will end up being
shared.

Change-Id: I65341c57d00308d246ec90deab8050b2c4bb3e61

1 files changed, 23 insertions, 1 deletions

diff --git a/smoketest/libtest.cxx b/smoketest/libtest.cxx
index 29959b07654d..98607fbd9609 100644
--- a/smoketest/libtest.cxx
+++ b/smoketest/libtest.cxx
@@ -82,7 +82,29 @@ int main (int argc, char **argv)
         return 1;
 
     // coverity[tainted_string] - build time test tool
-    Office *pOffice = lok_cpp_init( argv[1] );
+    char *install_path = argv[1];
+
+    if( argc > 4 )
+    {
+        fprintf( stderr, "testing preinit\n");
+        char *imp_lib;
+        void *dlhandle;
+        dlhandle = lok_dlopen( install_path, &imp_lib );
+        if( !dlhandle )
+        {
+            fprintf( stderr, "Failed to link '%s'\n", lok_dlerror() );
+            return -1;
+        }
+        LokHookPreInit *preinit = (LokHookPreInit *) lok_dlsym( dlhandle, "lok_preinit" );
+        if( !preinit )
+        {
+            fprintf( stderr, "Failed to find pre-init symbol: %s\n", lok_dlerror() );
+            return -1;
+        }
+        preinit( install_path, NULL );
+    }
+
+    Office *pOffice = lok_cpp_init( install_path );
     if( !pOffice )
     {
         fprintf( stderr, "Failed to initialize\n" );