VBOX: Make creating/writing the graphics status file part of the job file...

VBOX: Make creating/writing the graphics status file part of the job file configuration.  No need to write it if there is not going to be a running graphics application.

samples/vboxwrapper/vboxjob.cpp

@@ -114,6 +114,7 @@ void VBOX_JOB::clear() {
     enable_isocontextualization = false;
     enable_remotedesktop = false;
     enable_gbac = false;
+    enable_graphics_support = false;
     enable_network = false;
     network_bridged_mode = false;
     pf_guest_port = 0;
@@ -166,6 +167,7 @@ int VBOX_JOB::parse() {
         else if (xp.parse_bool("enable_isocontextualization", enable_isocontextualization)) continue;
         else if (xp.parse_bool("enable_remotedesktop", enable_remotedesktop)) continue;
         else if (xp.parse_bool("enable_gbac", enable_gbac)) continue;
+        else if (xp.parse_bool("enable_graphics_support", enable_graphics_support)) continue;
         else if (xp.parse_int("pf_guest_port", pf_guest_port)) continue;
         else if (xp.parse_int("pf_host_port", pf_host_port)) continue;
         else if (xp.parse_string("copy_to_shared", str)) {

samples/vboxwrapper/vboxjob.h

@@ -98,6 +98,10 @@ public:
     // whether to enable GBAC functionality
     bool enable_gbac;
 
+    // whether to enable graphics support by way of
+    // http://boinc.berkeley.edu/trac/wiki/GraphicsApi#File
+    bool enable_graphics_support;
+
     // maximum amount of wall-clock time this VM is allowed to run before
     // considering itself done.
     double job_duration;

samples/vboxwrapper/vboxwrapper.cpp

@@ -868,7 +868,9 @@ int main(int argc, char** argv) {
         pVM->poll();
 
         // Write updates for the graphics application's use
+        if (pVM->enable_graphics_support) {
             boinc_write_graphics_status(current_cpu_time, elapsed_time, fraction_done);
+        }
 
         if (boinc_status.no_heartbeat || boinc_status.quit_request) {
             pVM->reset_vm_process_priority();