This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGbcce8e0fccc1: Fix the logic so stop-hooks get run after a
breakpoint that ran an expression (authored by jingham).
Herald added a project: LLDB.
Herald added a subscriber: lldb-commits.
Changed prior to commit:
https://reviews.llvm.org/D106514?vs=360661&id=360990#toc
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D106514/new/
https://reviews.llvm.org/D106514
Files:
lldb/include/lldb/Target/Target.h
lldb/source/Target/Target.cpp
lldb/test/API/commands/target/stop-hooks/TestStopHookScripted.py
lldb/test/API/commands/target/stop-hooks/TestStopHooks.py
lldb/test/API/commands/target/stop-hooks/main.c
Index: lldb/test/API/commands/target/stop-hooks/main.c
===================================================================
--- lldb/test/API/commands/target/stop-hooks/main.c
+++ lldb/test/API/commands/target/stop-hooks/main.c
@@ -7,9 +7,15 @@
return g_var; // Set a breakpoint here and step out.
}
+void
+increment_gvar() {
+ g_var++;
+}
+
int
main()
{
int result = step_out_of_me(); // Stop here first
+ increment_gvar(); // Continue to here
return result;
}
Index: lldb/test/API/commands/target/stop-hooks/TestStopHooks.py
===================================================================
--- lldb/test/API/commands/target/stop-hooks/TestStopHooks.py
+++ lldb/test/API/commands/target/stop-hooks/TestStopHooks.py
@@ -29,6 +29,11 @@
"""Test that stop hooks fire on step-out."""
self.step_out_test()
+ def test_stop_hooks_after_expr(self):
+ """Test that a stop hook fires when hitting a breakpoint
+ that runs an expression"""
+ self.after_expr_test()
+
def step_out_test(self):
(target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(self,
"Set a breakpoint here", self.main_source_file)
@@ -42,3 +47,44 @@
self.assertTrue(var.IsValid())
self.assertEqual(var.GetValueAsUnsigned(), 1, "Updated g_var")
+ def after_expr_test(self):
+ interp = self.dbg.GetCommandInterpreter()
+ result = lldb.SBCommandReturnObject()
+ interp.HandleCommand("target stop-hook add -o 'expr g_var++'", result)
+ self.assertTrue(result.Succeeded, "Set the target stop hook")
+
+ (target, process, thread, first_bkpt) = lldbutil.run_to_source_breakpoint(self,
+ "Set a breakpoint here", self.main_source_file)
+
+ var = target.FindFirstGlobalVariable("g_var")
+ self.assertTrue(var.IsValid())
+ self.assertEqual(var.GetValueAsUnsigned(), 1, "Updated g_var")
+
+ bkpt = target.BreakpointCreateBySourceRegex("Continue to here", self.main_source_file)
+ self.assertNotEqual(bkpt.GetNumLocations(), 0, "Set the second breakpoint")
+ commands = lldb.SBStringList()
+ commands.AppendString("expr increment_gvar()")
+ bkpt.SetCommandLineCommands(commands);
+
+ threads = lldbutil.continue_to_breakpoint(process, bkpt)
+ self.assertEqual(len(threads), 1, "Hit my breakpoint")
+
+ self.assertTrue(var.IsValid())
+ self.assertEqual(var.GetValueAsUnsigned(), 3, "Updated g_var")
+
+ # Make sure running an expression does NOT run the stop hook.
+ # Our expression will increment it by one, but the stop shouldn't
+ # have gotten it to 5.
+ threads[0].frames[0].EvaluateExpression("increment_gvar()")
+ self.assertTrue(var.IsValid())
+ self.assertEqual(var.GetValueAsUnsigned(), 4, "Updated g_var")
+
+
+ # Make sure a rerun doesn't upset the state we've set up:
+ process.Kill()
+ lldbutil.run_to_breakpoint_do_run(self, target, first_bkpt)
+ var = target.FindFirstGlobalVariable("g_var")
+ self.assertTrue(var.IsValid())
+ self.assertEqual(var.GetValueAsUnsigned(), 1, "Updated g_var")
+
+
Index: lldb/test/API/commands/target/stop-hooks/TestStopHookScripted.py
===================================================================
--- lldb/test/API/commands/target/stop-hooks/TestStopHookScripted.py
+++ lldb/test/API/commands/target/stop-hooks/TestStopHookScripted.py
@@ -96,12 +96,12 @@
# Now set the breakpoint on step_out_of_me, and make sure we run the
# expression, then continue back to main.
bkpt = target.BreakpointCreateBySourceRegex("Set a breakpoint here and step out", self.main_source_file)
- self.assertTrue(bkpt.GetNumLocations() > 0, "Got breakpoints in step_out_of_me")
+ self.assertNotEqual(bkpt.GetNumLocations(), 0, "Got breakpoints in step_out_of_me")
process.Continue()
var = target.FindFirstGlobalVariable("g_var")
self.assertTrue(var.IsValid())
- self.assertEqual(var.GetValueAsUnsigned(), 5, "Updated g_var")
+ self.assertEqual(var.GetValueAsUnsigned(), 6, "Updated g_var")
func_name = process.GetSelectedThread().frames[0].GetFunctionName()
self.assertEqual("main", func_name, "Didn't stop at the expected function.")
Index: lldb/source/Target/Target.cpp
===================================================================
--- lldb/source/Target/Target.cpp
+++ lldb/source/Target/Target.cpp
@@ -95,6 +95,7 @@
m_watchpoint_list(), m_process_sp(), m_search_filter_sp(),
m_image_search_paths(ImageSearchPathsChanged, this),
m_source_manager_up(), m_stop_hooks(), m_stop_hook_next_id(0),
+ m_latest_stop_hook_id(0),
m_valid(true), m_suppress_stop_hooks(false),
m_is_dummy_target(is_dummy_target),
m_frame_recognizer_manager_up(
@@ -181,6 +182,7 @@
DisableAllWatchpoints(false);
ClearAllWatchpointHitCounts();
ClearAllWatchpointHistoricValues();
+ m_latest_stop_hook_id = 0;
}
void Target::DeleteCurrentProcess() {
@@ -2609,12 +2611,6 @@
if (m_process_sp->GetState() != eStateStopped)
return false;
- // <rdar://problem/12027563> make sure we check that we are not stopped
- // because of us running a user expression since in that case we do not want
- // to run the stop-hooks
- if (m_process_sp->GetModIDRef().IsLastResumeForUserExpression())
- return false;
-
if (m_stop_hooks.empty())
return false;
@@ -2629,6 +2625,18 @@
if (!any_active_hooks)
return false;
+ // <rdar://problem/12027563> make sure we check that we are not stopped
+ // because of us running a user expression since in that case we do not want
+ // to run the stop-hooks. Note, you can't just check whether the last stop
+ // was for a User Expression, because breakpoint commands get run before
+ // stop hooks, and one of them might have run an expression. You have
+ // to ensure you run the stop hooks once per natural stop.
+ uint32_t last_natural_stop = m_process_sp->GetModIDRef().GetLastNaturalStopID();
+ if (last_natural_stop != 0 && m_latest_stop_hook_id == last_natural_stop)
+ return false;
+
+ m_latest_stop_hook_id = last_natural_stop;
+
std::vector<ExecutionContext> exc_ctx_with_reasons;
ThreadList &cur_threadlist = m_process_sp->GetThreadList();
Index: lldb/include/lldb/Target/Target.h
===================================================================
--- lldb/include/lldb/Target/Target.h
+++ lldb/include/lldb/Target/Target.h
@@ -1429,8 +1429,10 @@
typedef std::map<lldb::user_id_t, StopHookSP> StopHookCollection;
StopHookCollection m_stop_hooks;
lldb::user_id_t m_stop_hook_next_id;
+ uint32_t m_latest_stop_hook_id; /// This records the last natural stop at
+ /// which we ran a stop-hook.
bool m_valid;
- bool m_suppress_stop_hooks;
+ bool m_suppress_stop_hooks; /// Used to not run stop hooks for expressions
bool m_is_dummy_target;
unsigned m_next_persistent_variable_index = 0;
/// An optional \a lldb_private::Trace object containing processor trace
_______________________________________________
lldb-commits mailing list
lldb-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
