1 files changed, 9 insertions, 6 deletions
diff --git a/lldb/source/Commands/CommandObjectProcess.cpp b/lldb/source/Commands/CommandObjectProcess.cpp
index e744b58..f1d3eb3 100644
--- a/lldb/source/Commands/CommandObjectProcess.cpp
+++ b/lldb/source/Commands/CommandObjectProcess.cpp
@@ -792,14 +792,17 @@ protected:
                 }
             }
             
-            const uint32_t num_threads = process->GetThreadList().GetSize();
+            {  // Scope for thread list mutex:
+                Mutex::Locker locker (process->GetThreadList().GetMutex());
+                const uint32_t num_threads = process->GetThreadList().GetSize();
 
-            // Set the actions that the threads should each take when resuming
-            for (uint32_t idx=0; idx<num_threads; ++idx)
-            {
-                process->GetThreadList().GetThreadAtIndex(idx)->SetResumeState (eStateRunning);
+                // Set the actions that the threads should each take when resuming
+                for (uint32_t idx=0; idx<num_threads; ++idx)
+                {
+                    process->GetThreadList().GetThreadAtIndex(idx)->SetResumeState (eStateRunning);
+                }
             }
-
+            
             Error error(process->Resume());
             if (error.Success())
             {