[lldb] Move breakpoint hit reset code to Target::CleanupProcess

This ensures it is run regardless of the method we use to initiate the
session (previous version did not handle connects), and it is the same
place that is used for resetting watchpoints.

Differential Revision: https://reviews.llvm.org/D134882

lldb/source/Target/Process.cpp

@@ -2761,18 +2761,15 @@ ListenerSP ProcessAttachInfo::GetListenerForProcess(Debugger &debugger) {
 }
 
 Status Process::WillLaunch(Module *module) {
-  GetTarget().ResetBreakpointHitCounts();
   return DoWillLaunch(module);
 }
 
 Status Process::WillAttachToProcessWithID(lldb::pid_t pid) {
-  GetTarget().ResetBreakpointHitCounts();
   return DoWillAttachToProcessWithID(pid);
 }
 
 Status Process::WillAttachToProcessWithName(const char *process_name,
                                             bool wait_for_launch) {
-  GetTarget().ResetBreakpointHitCounts();
   return DoWillAttachToProcessWithName(process_name, wait_for_launch);
 }
 

lldb/source/Target/Target.cpp

@@ -177,6 +177,7 @@ void Target::CleanupProcess() {
   // clean up needs some help from the process.
   m_breakpoint_list.ClearAllBreakpointSites();
   m_internal_breakpoint_list.ClearAllBreakpointSites();
+  ResetBreakpointHitCounts();
   // Disable watchpoints just on the debugger side.
   std::unique_lock<std::recursive_mutex> lock;
   this->GetWatchpointList().GetListMutex(lock);

lldb/test/API/functionalities/gdb_remote_client/TestProcessConnect.py

@@ -63,3 +63,57 @@ class TestProcessConnect(GDBRemoteTestBase):
             self.dbg.GetSelectedTarget().GetProcess().Kill()
         lldbutil.expect_state_changes(self, self.dbg.GetListener(),
                                       self.process(), [lldb.eStateExited])
+    def test_breakpoint_count(self):
+        """
+        Test that breakpoint count gets reset for each new connection.
+        """
+        class MyResponder(MockGDBServerResponder):
+
+            def __init__(self):
+                super().__init__()
+                self.continued = False
+
+            def qfThreadInfo(self):
+                return "m47"
+
+            def qsThreadInfo(self):
+                return "l"
+
+            def setBreakpoint(self, packet):
+                return "OK"
+
+            def readRegister(self, reg):
+                # Pretend we're at the breakpoint after we've been resumed.
+                return "3412000000000000" if self.continued else "4747000000000000"
+
+            def cont(self):
+                self.continued = True
+                return "T05thread=47;reason:breakpoint"
+
+        # Connect to the first process and set our breakpoint.
+        self.server.responder = MyResponder()
+        target = self.createTarget("a.yaml")
+        process = self.connect(target)
+
+        bkpt = target.BreakpointCreateByAddress(0x1234)
+        self.assertTrue(bkpt.IsValid())
+        self.assertEqual(bkpt.GetNumLocations(), 1)
+
+        # "continue" the process. It should hit our breakpoint.
+        process.Continue()
+        self.assertState(process.GetState(), lldb.eStateStopped)
+        self.assertEqual(bkpt.GetHitCount(), 1)
+
+        # Now kill it. The breakpoint should still show a hit count of one.
+        process.Kill()
+        self.server.stop()
+        self.assertEqual(bkpt.GetHitCount(), 1)
+
+        # Start over, and reconnect.
+        self.server = MockGDBServer(self.server_socket_class())
+        self.server.start()
+
+        process = self.connect(target)
+
+        # The hit count should be reset.
+        self.assertEqual(bkpt.GetHitCount(), 0)