gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdb / inflow.h

diff --git a/gdb/inflow.h b/gdb/inflow.h
index 16a78eee0264880ed6cbff1f5d3ce6ab6a778535..fe8c005be0db2500551e49a5b8606546c914d566 100644 (file)
--- a/gdb/inflow.h
+++ b/gdb/inflow.h
@@ -1,6 +1,6 @@
 /* Low level interface to ptrace, for GDB when running under Unix.
 
-   Copyright (C) 2003-2018 Free Software Foundation, Inc.
+   Copyright (C) 2003-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -21,5 +21,36 @@
 #define INFLOW_H
 
 #include <unistd.h>
+#include <signal.h>
+#include "gdbsupport/job-control.h"
+
+/* RAII class used to ignore SIGTTOU in a scope.  */
+
+class scoped_ignore_sigttou
+{
+public:
+  scoped_ignore_sigttou ()
+  {
+#ifdef SIGTTOU
+    if (job_control)
+      m_osigttou = signal (SIGTTOU, SIG_IGN);
+#endif
+  }
+
+  ~scoped_ignore_sigttou ()
+  {
+#ifdef SIGTTOU
+    if (job_control)
+      signal (SIGTTOU, m_osigttou);
+#endif
+  }
+
+  DISABLE_COPY_AND_ASSIGN (scoped_ignore_sigttou);
+
+private:
+#ifdef SIGTTOU
+  sighandler_t m_osigttou = NULL;
+#endif
+};
 
 #endif /* inflow.h */