81df4a42e4
This change will ensure that all non-optimized code will be compiled with debug break slots when debugging is initiated. This is handled by scanning the heap for non-optimized functions without debug break slots and setting their code to be lazy recomplied. When the lazy recompilation happens the code will ge generated with debug break slots (if debugging is still active at that point in time). R=svenpanne@chromium.org Currently this is only implemented for functions which do not have activations on the stack. BUG= TEST= Review URL: http://codereview.chromium.org//7839030 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9250 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
90 lines
3.0 KiB
JavaScript
90 lines
3.0 KiB
JavaScript
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --expose-debug-as debug
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// This test tests that full code compiled without debug break slots
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// is recompiled with debug break slots when debugging is started.
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// Get the Debug object exposed from the debug context global object.
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Debug = debug.Debug
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var bp;
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var done = false;
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var step_count = 0;
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// Debug event listener which steps until the global variable done is true.
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function listener(event, exec_state, event_data, data) {
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if (event == Debug.DebugEvent.Break) {
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if (!done) exec_state.prepareStep(Debug.StepAction.StepNext);
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step_count++;
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}
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};
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// Set the global variables state to prpare the stepping test.
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function prepare_step_test() {
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done = false;
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step_count = 0;
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}
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// Test function to step through.
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function f() {
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var i = 1;
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var j = 2;
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done = true;
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};
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prepare_step_test();
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f();
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// Add the debug event listener.
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Debug.setListener(listener);
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bp = Debug.setBreakPoint(f, 1);
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prepare_step_test();
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f();
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assertEquals(4, step_count);
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Debug.clearBreakPoint(bp);
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// Set a breakpoint on the first var statement (line 1).
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bp = Debug.setBreakPoint(f, 1);
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// Step through the function ensuring that the var statements are hit as well.
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prepare_step_test();
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f();
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assertEquals(4, step_count);
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// Clear the breakpoint and check that no stepping happens.
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Debug.clearBreakPoint(bp);
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prepare_step_test();
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f();
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assertEquals(0, step_count);
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// Get rid of the debug event listener.
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Debug.setListener(null);
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