7d2be7c0e0
Optimized frames are now handled by the debugger. When discovering optimized frames during stack inspection in the debugger they are "deoptimized" using the normal deoptimization code and the deoptimizer output information is used to provide frame information to the debugger. Before this change the debugger reported each optimized frame as one frame no matter the number of inlined functuions that might have been called inside of it. Also all locals where reported as undefined. Locals can still be reposted as undefined when their value is not "known" by the optimized frame. As the structures used to calculate the output frames when deoptimizing are not GC safe the information for the debugger is copied to another structure (DeoptimizedFrameInfo) which is registered with the global deoptimizer data and processed during GC. R=fschneider@chromium.org BUG=v8:1140 TEST=test/mjsunit/debug-evaluate-locals-optimized* Review URL: http://codereview.chromium.org//7230045 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8464 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
120 lines
3.7 KiB
JavaScript
120 lines
3.7 KiB
JavaScript
// Copyright 2008 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
|
|
// Get the Debug object exposed from the debug context global object.
|
|
Debug = debug.Debug
|
|
|
|
listenerComplete = false;
|
|
exception = false;
|
|
|
|
|
|
function listener(event, exec_state, event_data, data) {
|
|
try {
|
|
if (event == Debug.DebugEvent.Break)
|
|
{
|
|
assertEquals(6, exec_state.frameCount());
|
|
|
|
for (var i = 0; i < exec_state.frameCount(); i++) {
|
|
var frame = exec_state.frame(i);
|
|
// All frames except the bottom one has normal variables a and b.
|
|
if (i < exec_state.frameCount() - 1) {
|
|
assertEquals('a', frame.localName(0));
|
|
assertEquals('b', frame.localName(1));
|
|
assertEquals(i * 2 + 1, frame.localValue(0).value());
|
|
assertEquals(i * 2 + 2, frame.localValue(1).value());
|
|
}
|
|
|
|
// When function f is optimized (2 means YES, see runtime.cc) we
|
|
// expect an optimized frame for f with g1, g2 and g3 inlined.
|
|
if (%GetOptimizationStatus(f) == 2) {
|
|
if (i == 1 || i == 2 || i == 3) {
|
|
assertTrue(frame.isOptimizedFrame());
|
|
assertTrue(frame.isInlinedFrame());
|
|
} else if (i == 4) {
|
|
assertTrue(frame.isOptimizedFrame());
|
|
assertFalse(frame.isInlinedFrame());
|
|
} else {
|
|
assertFalse(frame.isOptimizedFrame());
|
|
assertFalse(frame.isInlinedFrame());
|
|
}
|
|
}
|
|
}
|
|
|
|
// Indicate that all was processed.
|
|
listenerComplete = true;
|
|
}
|
|
} catch (e) {
|
|
exception = e
|
|
};
|
|
};
|
|
|
|
f();f();f();
|
|
%OptimizeFunctionOnNextCall(f);
|
|
f();
|
|
|
|
// Add the debug event listener.
|
|
Debug.setListener(listener);
|
|
|
|
function h(x, y) {
|
|
var a = 1;
|
|
var b = 2;
|
|
debugger; // Breakpoint.
|
|
};
|
|
|
|
function g3(x, y) {
|
|
var a = 3;
|
|
var b = 4;
|
|
h(a, b);
|
|
};
|
|
|
|
function g2(x, y) {
|
|
var a = 5;
|
|
var b = 6;
|
|
g3(a, b);
|
|
};
|
|
|
|
function g1(x, y) {
|
|
var a = 7;
|
|
var b = 8;
|
|
g2(a, b);
|
|
};
|
|
|
|
function f(x, y) {
|
|
var a = 9;
|
|
var b = 10;
|
|
g1(a, b);
|
|
};
|
|
|
|
f(11, 12);
|
|
|
|
// Make sure that the debug event listener vas invoked.
|
|
assertFalse(exception, "exception in listener " + exception)
|
|
assertTrue(listenerComplete);
|
|
|
|
Debug.setListener(null);
|