Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Flags: --expose-debug-as debug --allow-natives-syntax |
| 6 | |
| 7 | // Test debug event catch prediction for thrown exceptions. We distinguish |
| 8 | // between "caught" and "uncaught" based on the following assumptions: |
| 9 | // 1) try-catch : Will always catch the exception. |
| 10 | // 2) try-finally : Will always re-throw the exception. |
| 11 | |
| 12 | Debug = debug.Debug; |
| 13 | |
| 14 | var log = []; |
| 15 | |
| 16 | function listener(event, exec_state, event_data, data) { |
| 17 | try { |
| 18 | if (event == Debug.DebugEvent.Exception) { |
| 19 | log.push([event_data.exception(), event_data.uncaught()]); |
| 20 | } |
| 21 | } catch (e) { |
| 22 | %AbortJS(e + "\n" + e.stack); |
| 23 | } |
| 24 | } |
| 25 | |
| 26 | Debug.setBreakOnException(); |
| 27 | Debug.setListener(listener); |
| 28 | |
| 29 | (function TryCatch() { |
| 30 | log = []; // Clear log. |
| 31 | function f(a) { |
| 32 | try { |
| 33 | throw "boom" + a; |
| 34 | } catch(e) { |
| 35 | return e; |
| 36 | } |
| 37 | } |
| 38 | assertEquals("boom1", f(1)); |
| 39 | assertEquals("boom2", f(2)); |
| 40 | %OptimizeFunctionOnNextCall(f); |
| 41 | assertEquals("boom3", f(3)); |
| 42 | print("Collect log:", log); |
| 43 | assertEquals([["boom1",false], ["boom2",false], ["boom3",false]], log); |
| 44 | })(); |
| 45 | |
| 46 | (function TryFinally() { |
| 47 | log = []; // Clear log. |
| 48 | function f(a) { |
| 49 | try { |
| 50 | throw "baem" + a; |
| 51 | } finally { |
| 52 | return a + 10; |
| 53 | } |
| 54 | } |
| 55 | assertEquals(11, f(1)); |
| 56 | assertEquals(12, f(2)); |
| 57 | %OptimizeFunctionOnNextCall(f); |
| 58 | assertEquals(13, f(3)); |
| 59 | print("Collect log:", log); |
| 60 | assertEquals([["baem1",true], ["baem2",true], ["baem3",true]], log); |
| 61 | })(); |
| 62 | |
| 63 | (function TryCatchFinally() { |
| 64 | log = []; // Clear log. |
| 65 | function f(a) { |
| 66 | try { |
| 67 | throw "wosh" + a; |
| 68 | } catch(e) { |
| 69 | return e + a; |
| 70 | } finally { |
| 71 | // Nothing. |
| 72 | } |
| 73 | } |
| 74 | assertEquals("wosh11", f(1)); |
| 75 | assertEquals("wosh22", f(2)); |
| 76 | %OptimizeFunctionOnNextCall(f); |
| 77 | assertEquals("wosh33", f(3)); |
| 78 | print("Collect log:", log); |
| 79 | assertEquals([["wosh1",false], ["wosh2",false], ["wosh3",false]], log); |
| 80 | })(); |
| 81 | |
| 82 | (function TryCatchNestedFinally() { |
| 83 | log = []; // Clear log. |
| 84 | function f(a) { |
| 85 | try { |
| 86 | try { |
| 87 | throw "bang" + a; |
| 88 | } finally { |
| 89 | // Nothing. |
| 90 | } |
| 91 | } catch(e) { |
| 92 | return e + a; |
| 93 | } |
| 94 | } |
| 95 | assertEquals("bang11", f(1)); |
| 96 | assertEquals("bang22", f(2)); |
| 97 | %OptimizeFunctionOnNextCall(f); |
| 98 | assertEquals("bang33", f(3)); |
| 99 | print("Collect log:", log); |
| 100 | assertEquals([["bang1",false], ["bang2",false], ["bang3",false]], log); |
| 101 | })(); |
| 102 | |
| 103 | (function TryFinallyNestedCatch() { |
| 104 | log = []; // Clear log. |
| 105 | function f(a) { |
| 106 | try { |
| 107 | try { |
| 108 | throw "peng" + a; |
| 109 | } catch(e) { |
| 110 | return e |
| 111 | } |
| 112 | } finally { |
| 113 | return a + 10; |
| 114 | } |
| 115 | } |
| 116 | assertEquals(11, f(1)); |
| 117 | assertEquals(12, f(2)); |
| 118 | %OptimizeFunctionOnNextCall(f); |
| 119 | assertEquals(13, f(3)); |
| 120 | print("Collect log:", log); |
| 121 | assertEquals([["peng1",false], ["peng2",false], ["peng3",false]], log); |
| 122 | })(); |
| 123 | |
| 124 | (function TryFinallyNestedFinally() { |
| 125 | log = []; // Clear log. |
| 126 | function f(a) { |
| 127 | try { |
| 128 | try { |
| 129 | throw "oops" + a; |
| 130 | } finally { |
| 131 | // Nothing. |
| 132 | } |
| 133 | } finally { |
| 134 | return a + 10; |
| 135 | } |
| 136 | } |
| 137 | assertEquals(11, f(1)); |
| 138 | assertEquals(12, f(2)); |
| 139 | %OptimizeFunctionOnNextCall(f); |
| 140 | assertEquals(13, f(3)); |
| 141 | print("Collect log:", log); |
| 142 | assertEquals([["oops1",true], ["oops2",true], ["oops3",true]], log); |
| 143 | })(); |