The Tor Browser / file comparison
comparison: tools/profiler/tests/test_enterjit_osr.js
tools/profiler/tests/test_enterjit_osr.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:5767035a1a01 |
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| 1 // Check that the EnterJIT frame, added by the JIT trampoline and | |
| 2 // usable by a native unwinder to resume unwinding after encountering | |
| 3 // JIT code, is pushed as expected. | |
| 4 function run_test() { | |
| 5 let p = Cc["@mozilla.org/tools/profiler;1"]; | |
| 6 // Just skip the test if the profiler component isn't present. | |
| 7 if (!p) | |
| 8 return; | |
| 9 p = p.getService(Ci.nsIProfiler); | |
| 10 if (!p) | |
| 11 return; | |
| 12 | |
| 13 // This test assumes that it's starting on an empty SPS stack. | |
| 14 // (Note that the other profiler tests also assume the profiler | |
| 15 // isn't already started.) | |
| 16 do_check_true(!p.IsActive()); | |
| 17 | |
| 18 const ms = 5; | |
| 19 p.StartProfiler(100, ms, ["js"], 1); | |
| 20 let profile = (function arbitrary_name(){ | |
| 21 // A frame for |arbitrary_name| has been pushed. | |
| 22 let then = Date.now(); | |
| 23 do { | |
| 24 let n = 10000; | |
| 25 while (--n); // OSR happens here | |
| 26 // Spin until we're sure we have a sample. | |
| 27 } while (Date.now() - then < ms * 2.5); | |
| 28 return p.getProfileData().threads[0].samples; | |
| 29 })(); | |
| 30 do_check_neq(profile.length, 0); | |
| 31 let stack = profile[profile.length - 1].frames.map(f => f.location); | |
| 32 stack = stack.slice(stack.indexOf("js::RunScript") + 1); | |
| 33 | |
| 34 do_print(stack); | |
| 35 // This test needs to not break on platforms and configurations | |
| 36 // where IonMonkey isn't available / enabled. | |
| 37 if (stack.length < 2 || stack[1] != "EnterJIT") { | |
| 38 do_print("No JIT?"); | |
| 39 // Try to check what we can.... | |
| 40 do_check_eq(Math.min(stack.length, 1), 1); | |
| 41 let thisInterp = stack[0]; | |
| 42 do_check_eq(thisInterp.split(" ")[0], "arbitrary_name"); | |
| 43 if (stack.length >= 2) { | |
| 44 let nextFrame = stack[1]; | |
| 45 do_check_neq(nextFrame.split(" ")[0], "arbitrary_name"); | |
| 46 } | |
| 47 } else { | |
| 48 do_check_eq(Math.min(stack.length, 3), 3); | |
| 49 let thisInterp = stack[0]; | |
| 50 let enterJit = stack[1]; | |
| 51 let thisBC = stack[2]; | |
| 52 do_check_eq(thisInterp.split(" ")[0], "arbitrary_name"); | |
| 53 do_check_eq(enterJit, "EnterJIT"); | |
| 54 do_check_eq(thisBC.split(" ")[0], "arbitrary_name"); | |
| 55 } | |
| 56 | |
| 57 p.StopProfiler(); | |
| 58 } |
