Save and restore terminal state when lldb is suspended with SIGTSTP and resumed with SIGCONT.

Readline & gdb have a bunch of code to handle older UNIX'es with other job control mechanisms.
I didn't try to replicate that.

llvm-svn: 169032

1 files changed, 20 insertions, 0 deletions

diff --git a/lldb/tools/driver/Driver.cpp b/lldb/tools/driver/Driver.cpp
index 85fec519f37..b410f572a6e 100644
--- a/lldb/tools/driver/Driver.cpp
+++ b/lldb/tools/driver/Driver.cpp
@@ -1579,6 +1579,24 @@ sigint_handler (int signo)
 	exit (signo);
 }
 
+void
+sigtstp_handler (int signo)
+{
+    g_driver->GetDebugger().SaveInputTerminalState();
+    signal (signo, SIG_DFL);
+    kill (getpid(), signo);
+    signal (signo, sigtstp_handler);
+}
+
+void
+sigcont_handler (int signo)
+{
+    g_driver->GetDebugger().RestoreInputTerminalState();
+    signal (signo, SIG_DFL);
+    kill (getpid(), signo);
+    signal (signo, sigcont_handler);
+}
+
 int
 main (int argc, char const *argv[], const char *envp[])
 {
@@ -1589,6 +1607,8 @@ main (int argc, char const *argv[], const char *envp[])
     signal (SIGPIPE, SIG_IGN);
     signal (SIGWINCH, sigwinch_handler);
     signal (SIGINT, sigint_handler);
+    signal (SIGTSTP, sigtstp_handler);
+    signal (SIGCONT, sigcont_handler);
 
     // Create a scope for driver so that the driver object will destroy itself
     // before SBDebugger::Terminate() is called.