Support for having two SmtEngines with the same ExprManager.

Basically, this involves creating a separate StatisticsRegistry for the
ExprManager and for the SmtEngine.  Otherwise, theories register the
same statistic twice.  This is a larger problem, though, for creating
multiple instances of theories, and that is unaddressed.  Still,
separating out the expr statistics into a separate registry is probably
a good idea, since the expr package is somewhat separate anyway (and in
the short term it allows two SmtEngines to co-exist).

1 files changed, 10 insertions, 0 deletions

diff --git a/src/smt/smt_engine_scope.cpp b/src/smt/smt_engine_scope.cpp
new file mode 100644
index 000000000..03298e99a
--- /dev/null
+++ b/src/smt/smt_engine_scope.cpp
@@ -0,0 +1,10 @@
+#include "smt/smt_engine.h"
+#include "smt/smt_engine_scope.h"
+
+namespace CVC4 {
+namespace smt {
+
+CVC4_THREADLOCAL(SmtEngine*) s_smtEngine_current = NULL;
+
+}
+}