1// Copyright 2013 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
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
9//       copyright notice, this list of conditions and the following
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11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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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// Flags: --concurrent-recompilation --block-concurrent-recompilation
30
31if (!%IsConcurrentRecompilationSupported()) {
32  print("Concurrent recompilation is disabled. Skipping this test.");
33  quit();
34}
35
36Debug = debug.Debug;
37
38function listener(event, exec_state, event_data, data) {
39  if (event != Debug.DebugEvent.Break) return;
40  try {
41    assertEquals("foo", exec_state.frame(0).evaluate("a").value());
42  } catch (e) {
43    exception = e;
44  };
45  listened++;
46};
47
48var exception = null;
49var listened = 0;
50
51var f = function() {
52  var a = "foo";
53  var b = a.substring("1");
54  [a, b].sort();
55  return a;
56}
57
58f();
59f();
60%OptimizeFunctionOnNextCall(f, "concurrent");  // Mark with builtin.
61f();                           // Kick off concurrent recompilation.
62
63// After compile graph has been created...
64Debug.setListener(listener);   // Activate debugger.
65Debug.setBreakPoint(f, 2, 0);  // Force deopt.
66
67// At this point, concurrent recompilation is still being blocked.
68assertUnoptimized(f, "no sync");
69// Let concurrent recompilation proceed.
70%UnblockConcurrentRecompilation();
71// Sync with optimization thread.  But no optimized code is installed.
72assertUnoptimized(f, "sync");
73
74f();                           // Trigger break point.
75assertEquals(1, listened);
76assertNull(exception);
77