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      1 // Copyright 2011 the V8 project authors. All rights reserved.
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      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
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     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
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     14 //       from this software without specific prior written permission.
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     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 // Flags: --expose-debug-as debug --allow-natives-syntax
     29 
     30 // This test tests that deoptimization due to debug breaks works for
     31 // inlined functions where the full-code is generated before the
     32 // debugger is attached.
     33 //
     34 //See http://code.google.com/p/chromium/issues/detail?id=105375
     35 
     36 // Get the Debug object exposed from the debug context global object.
     37 Debug = debug.Debug;
     38 
     39 var count = 0;
     40 var break_count = 0;
     41 
     42 // Debug event listener which sets a breakpoint first time it is hit
     43 // and otherwise counts break points hit and checks that the expected
     44 // state is reached.
     45 function listener(event, exec_state, event_data, data) {
     46   if (event == Debug.DebugEvent.Break) {
     47     break_count++;
     48     if (break_count == 1) {
     49       Debug.setBreakPoint(g, 3);
     50 
     51       for (var i = 0; i < exec_state.frameCount(); i++) {
     52         var frame = exec_state.frame(i);
     53         // When function f is optimized (1 means YES, see runtime.cc) we
     54         // expect an optimized frame for f and g.
     55         if (%GetOptimizationStatus(f) == 1) {
     56           if (i == 1) {
     57             assertTrue(frame.isOptimizedFrame());
     58             assertTrue(frame.isInlinedFrame());
     59             assertEquals(4 - i, frame.inlinedFrameIndex());
     60           } else if (i == 2) {
     61             assertTrue(frame.isOptimizedFrame());
     62             assertFalse(frame.isInlinedFrame());
     63           } else {
     64             assertFalse(frame.isOptimizedFrame());
     65             assertFalse(frame.isInlinedFrame());
     66           }
     67         }
     68       }
     69     }
     70   }
     71 }
     72 
     73 function f() {
     74   g();
     75 }
     76 
     77 function g() {
     78   count++;
     79   h();
     80   var b = 1;  // Break point is set here.
     81 }
     82 
     83 function h() {
     84   debugger;
     85 }
     86 
     87 f();f();f();
     88 %OptimizeFunctionOnNextCall(f);
     89 f();
     90 
     91 // Add the debug event listener.
     92 Debug.setListener(listener);
     93 
     94 f();
     95 
     96 assertEquals(5, count);
     97 assertEquals(2, break_count);
     98 
     99 // Get rid of the debug event listener.
    100 Debug.setListener(null);
    101