[debugger] Further stepping support in test wrapper

test/mjsunit/debug-break-inline.js

-// Copyright 2011 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Flags: --expose-debug-as debug --allow-natives-syntax
-
-// This test tests that deoptimization due to debug breaks works for
-// inlined functions where the full-code is generated before the
-// debugger is attached.
-//
-//See http://code.google.com/p/chromium/issues/detail?id=105375
-
-// Get the Debug object exposed from the debug context global object.
-Debug = debug.Debug;
-
-var count = 0;
-var break_count = 0;
-
-// Debug event listener which sets a breakpoint first time it is hit
-// and otherwise counts break points hit and checks that the expected
-// state is reached.
-function listener(event, exec_state, event_data, data) {
-  if (event == Debug.DebugEvent.Break) {
-    break_count++;
-    if (break_count == 1) {
-      Debug.setBreakPoint(g, 3);
-
-      for (var i = 0; i < exec_state.frameCount(); i++) {
-        var frame = exec_state.frame(i);
-        // When function f is optimized (1 means YES, see runtime.cc) we
-        // expect an optimized frame for f and g.
-        if (%GetOptimizationStatus(f) == 1) {
-          if (i == 1) {
-            assertTrue(frame.isOptimizedFrame());
-            assertTrue(frame.isInlinedFrame());
-            assertEquals(4 - i, frame.inlinedFrameIndex());
-          } else if (i == 2) {
-            assertTrue(frame.isOptimizedFrame());
-            assertFalse(frame.isInlinedFrame());
-          } else {
-            assertFalse(frame.isOptimizedFrame());
-            assertFalse(frame.isInlinedFrame());
-          }
-        }
-      }
-    }
-  }
-}
-
-function f() {
-  g();
-}
-
-function g() {
-  count++;
-  h();
-  var b = 1;  // Break point is set here.
-}
-
-function h() {
-  debugger;
-}
-
-f();f();f();
-%OptimizeFunctionOnNextCall(f);
-f();
-
-// Add the debug event listener.
-Debug.setListener(listener);
-
-f();
-
-assertEquals(5, count);
-assertEquals(2, break_count);
-
-// Get rid of the debug event listener.
-Debug.setListener(null);