llgs: add proper exec support for Linux.

This change:
* properly captures execs in NativeProcessLinux.
* clears out all non-main-thread thread metadata in NativeProcessLinux on exec.
* adds a DidExec() method to the NativeProcessProtocol delegate.
* clears out the auxv data cache when we exec (on Linux).

This is a small part of the llgs for local Linux debugging work going on here:
https://github.com/tfiala/lldb/tree/dev-llgs-local

I'm breaking it into small patches.

llvm-svn: 216670

1 files changed, 6 insertions, 0 deletions

diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h
index 412b591e6ec..13c037c0287 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h
@@ -218,6 +218,9 @@ public:
     void
     ProcessStateChanged (lldb_private::NativeProcessProtocol *process, lldb::StateType state) override;
 
+    void
+    DidExec (lldb_private::NativeProcessProtocol *process) override;
+
 protected:
     lldb::PlatformSP m_platform_sp;
     lldb::thread_t m_async_thread;
@@ -534,6 +537,9 @@ private:
     void
     MaybeCloseInferiorTerminalConnection ();
 
+    void
+    ClearProcessSpecificData ();
+
     //------------------------------------------------------------------
     // For GDBRemoteCommunicationServer only
     //------------------------------------------------------------------