VBOX: Add option to use 'savestate' instead of 'poweroff' during graceful VM shutdown.

samples/vboxwrapper/vboxjob.cpp

@@ -117,6 +117,7 @@ void VBOX_JOB::clear() {
     enable_remotedesktop = false;
     enable_gbac = false;
     enable_graphics_support = false;
+    enable_vm_savestate_usage = false;
     disable_automatic_checkpoints = false;
     pf_guest_port = 0;
     pf_host_port = 0;
@@ -169,6 +170,7 @@ int VBOX_JOB::parse() {
         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_bool("enable_vm_savestate_usage", enable_vm_savestate_usage)) continue;
         else if (xp.parse_bool("disable_automatic_checkpoints", disable_automatic_checkpoints)) 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;

samples/vboxwrapper/vboxjob.h

@@ -102,6 +102,9 @@ public:
     // http://boinc.berkeley.edu/trac/wiki/GraphicsApi#File
     bool enable_graphics_support;
 
+    // whether to use savestate instead of poweroff on exit
+    bool enable_vm_savestate_usage;
+
     // whether to disable automatic checkpoint support
     bool disable_automatic_checkpoints;
 

samples/vboxwrapper/vboxwrapper.cpp

@@ -876,7 +876,16 @@ int main(int argc, char** argv) {
 
         if (boinc_status.no_heartbeat || boinc_status.quit_request) {
             pVM->reset_vm_process_priority();
+            if (pVM->enable_vm_savestate_usage) {
+                retval = pVM->create_snapshot(elapsed_time);
+                if (!retval) {
+                    checkpoint.update(elapsed_time, current_cpu_time);
+                    boinc_checkpoint_completed();
+                }
+                pVM->stop();
+            } else {
                 pVM->poweroff();
+            }
             boinc_temporary_exit(86400);
         }
         if (boinc_status.abort_request) {
@@ -907,7 +916,12 @@ int main(int argc, char** argv) {
             }
             delete_temporary_exit_trigger_file(*pVM);
             pVM->reset_vm_process_priority();
-            pVM->stop();
+            retval = pVM->create_snapshot(elapsed_time);
+            if (!retval) {
+                checkpoint.update(elapsed_time, current_cpu_time);
+                boinc_checkpoint_completed();
+            }
+            pVM->poweroff();
             if (is_notice) {
                 boinc_temporary_exit(temp_delay, message.c_str(), is_notice);
             } else {