Get rid of the Unallocated thread context state.

Basically merge it in with Halted.
Also had to get rid of a few other functions that
called ThreadContext::deallocate(), including:
 - InOrderCPU's setThreadRescheduleCondition.
 - ThreadContext::exit().  This function was there to avoid terminating
   simulation when one thread out of a multi-thread workload exits, but we
   need to find a better (non-cpu-centric) way.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/sim/system.cc b/src/sim/system.cc
index d16524c41..f10167bba 100644
--- a/src/sim/system.cc
+++ b/src/sim/system.cc
@@ -211,6 +211,17 @@ System::registerThreadContext(ThreadContext *tc, int assigned)
     return id;
 }
 
+int
+System::numRunningContexts()
+{
+    int running = 0;
+    for (int i = 0; i < _numContexts; ++i) {
+        if (threadContexts[i]->status() != ThreadContext::Halted)
+            ++running;
+    }
+    return running;
+}
+
 void
 System::startup()
 {