Modified patch from Matt Kopec that fixes a process launch issue on linux where we wouldn't acquire the process run lock.

llvm-svn: 163163

1 files changed, 10 insertions, 2 deletions

diff --git a/lldb/source/Target/Process.cpp b/lldb/source/Target/Process.cpp
index 9cbefffc82a..63a336551a0 100644
--- a/lldb/source/Target/Process.cpp
+++ b/lldb/source/Target/Process.cpp
@@ -2561,8 +2561,16 @@ Process::Launch (const ProcessLaunchInfo &launch_info)
                 SetPublicState (eStateLaunching);
                 m_should_detach = false;
 
-                // Now launch using these arguments.
-                error = DoLaunch (exe_module, launch_info);
+                if (m_run_lock.WriteTryLock())
+                {
+                    // Now launch using these arguments.
+                    error = DoLaunch (exe_module, launch_info);
+                }
+                else
+                {
+                    // This shouldn't happen
+                    error.SetErrorString("failed to acquire process run lock");
+                }
 
                 if (error.Fail())
                 {