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
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.
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13 // contributors may be used to endorse or promote products derived
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28 // Flags: --expose-debug-as debug --allow-natives-syntax
29 // Flags: --concurrent-recompilation --block-concurrent-recompilation
30 // Flags: --turbo-deoptimization
32 if (!%IsConcurrentRecompilationSupported()) {
33 print("Concurrent recompilation is disabled. Skipping this test.");
39 function listener(event, exec_state, event_data, data) {
40 if (event != Debug.DebugEvent.Break) return;
42 assertEquals("foo", exec_state.frame(0).evaluate("a").value());
54 var b = a.substring("1");
61 %OptimizeFunctionOnNextCall(f, "concurrent"); // Mark with builtin.
62 f(); // Kick off concurrent recompilation.
64 // After compile graph has been created...
65 Debug.setListener(listener); // Activate debugger.
66 Debug.setBreakPoint(f, 2, 0); // Force deopt.
68 // At this point, concurrent recompilation is still being blocked.
69 assertUnoptimized(f, "no sync");
70 // Let concurrent recompilation proceed.
71 %UnblockConcurrentRecompilation();
72 // Sync with optimization thread. But no optimized code is installed.
73 assertUnoptimized(f, "sync");
75 f(); // Trigger break point.
76 assertEquals(1, listened);
77 assertNull(exception);