[PATCH v2 1/6] gdb: add in_cond_eval field to thread_control_state struct.

[Natalia Saiapova <natalia.saiapova@intel.com>]

This patch adds a new field to thread_control_state struct, which
is set to true when the thread is evaluating a breakpoint condition,
and false otherwise.

gdb/ChangeLog:
2020-08-27  Natalia Saiapova  <natalia.saiapova@intel.com>
	    Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>

	* breakpoint.c (bpstat_check_breakpoint_conditions): Set/unset
	thread->control.in_cond_eval.
	* gdbthread.h (thread_control_state) <in_cond_eval>: New boolean field.

Co-authored-by: Natalia Saiapova <natalia.saiapova@intel.com>
Co-authored-by: Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>

Signed-off-by: Natalia Saiapova <natalia.saiapova@intel.com>
---
 gdb/breakpoint.c | 3 +++
 gdb/gdbthread.h  | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index 296b08c0afc..77f927dc645 100644
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -5209,10 +5209,13 @@ bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread)
 	{
 	  try
 	    {
+	      thread->control.in_cond_eval = true;
 	      condition_result = breakpoint_cond_eval (cond);
+	      thread->control.in_cond_eval = false;
 	    }
 	  catch (const gdb_exception &ex)
 	    {
+	      thread->control.in_cond_eval = false;
 	      exception_fprintf (gdb_stderr, ex,
 				 "Error in testing breakpoint condition:\n");
 	    }
diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h
index ab5771fdb47..9e93587f221 100644
--- a/gdb/gdbthread.h
+++ b/gdb/gdbthread.h
@@ -158,6 +158,9 @@ struct thread_control_state
      command.  This is used to decide whether "set scheduler-locking
      step" behaves like "on" or "off".  */
   int stepping_command = 0;
+
+  /* True if the thread is evaluating a BP condition.  */
+  bool in_cond_eval = false;
 };
 
 /* Inferior thread specific part of `struct infcall_suspend_state'.  */
-- 
2.17.1

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