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-rw-r--r--src/base/types.hh4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/base/types.hh b/src/base/types.hh
index 3d53e6ba0..bc5c715ce 100644
--- a/src/base/types.hh
+++ b/src/base/types.hh
@@ -181,6 +181,10 @@ const Addr MaxAddr = (Addr)-1;
typedef int16_t ThreadID;
const ThreadID InvalidThreadID = (ThreadID)-1;
+/** Globally unique thread context ID */
+typedef int ContextID;
+const ContextID InvalidContextID = (ContextID)-1;
+
/**
* Port index/ID type, and a symbolic name for an invalid port id.
*/