- client: fetch work from backup (zero resource share) projects

only if a device instance is idle


svn path=/trunk/boinc/; revision=25271

checkin_notes

@@ -1756,3 +1756,10 @@ David  15 Feb 2012
         vda_lib.h
     client/
         hostinfo_network.cpp
+
+David  15 Feb 2012
+    - client: fetch work from backup (zero resource share) projects
+        only if a device instance is idle
+
+    client/
+        work_fetch.cpp

client/work_fetch.cpp

@@ -225,6 +225,13 @@ PROJECT* RSC_WORK_FETCH::choose_project_hyst() {
         if (!p->pwf.can_fetch_work) continue;
         if (!project_state(p).may_have_work) continue;
 
+        // if project has zero resource share,
+        // only fetch work if a device is idle
+        //
+        if (p->resource_share == 0 && nidle_now == 0) {
+            continue;
+        }
+
         // if project has excluded GPUs of this type,
         // and it has runnable jobs for this type,
         // don't fetch work for it.