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comparison: toolkit/components/perf/PerfMeasurement.cpp
toolkit/components/perf/PerfMeasurement.cpp
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| -1:000000000000 | 0:92fabc89c71c |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "PerfMeasurement.h" | |
| 7 #include "jsperf.h" | |
| 8 #include "mozilla/ModuleUtils.h" | |
| 9 #include "nsMemory.h" | |
| 10 #include "mozilla/Preferences.h" | |
| 11 #include "mozJSComponentLoader.h" | |
| 12 #include "nsZipArchive.h" | |
| 13 | |
| 14 #define JSPERF_CONTRACTID \ | |
| 15 "@mozilla.org/jsperf;1" | |
| 16 | |
| 17 #define JSPERF_CID \ | |
| 18 { 0x421c38e6, 0xaee0, 0x4509, \ | |
| 19 { 0xa0, 0x25, 0x13, 0x0f, 0x43, 0x78, 0x03, 0x5a } } | |
| 20 | |
| 21 namespace mozilla { | |
| 22 namespace jsperf { | |
| 23 | |
| 24 NS_GENERIC_FACTORY_CONSTRUCTOR(Module) | |
| 25 | |
| 26 NS_IMPL_ISUPPORTS(Module, nsIXPCScriptable) | |
| 27 | |
| 28 Module::Module() | |
| 29 { | |
| 30 } | |
| 31 | |
| 32 Module::~Module() | |
| 33 { | |
| 34 } | |
| 35 | |
| 36 #define XPC_MAP_CLASSNAME Module | |
| 37 #define XPC_MAP_QUOTED_CLASSNAME "Module" | |
| 38 #define XPC_MAP_WANT_CALL | |
| 39 #define XPC_MAP_FLAGS nsIXPCScriptable::WANT_CALL | |
| 40 #include "xpc_map_end.h" | |
| 41 | |
| 42 static bool | |
| 43 SealObjectAndPrototype(JSContext* cx, JS::Handle<JSObject *> parent, const char* name) | |
| 44 { | |
| 45 JS::Rooted<JS::Value> prop(cx); | |
| 46 if (!JS_GetProperty(cx, parent, name, &prop)) | |
| 47 return false; | |
| 48 | |
| 49 if (prop.isUndefined()) { | |
| 50 // Pretend we sealed the object. | |
| 51 return true; | |
| 52 } | |
| 53 | |
| 54 JS::Rooted<JSObject*> obj(cx, prop.toObjectOrNull()); | |
| 55 if (!JS_GetProperty(cx, obj, "prototype", &prop)) | |
| 56 return false; | |
| 57 | |
| 58 JS::Rooted<JSObject*> prototype(cx, prop.toObjectOrNull()); | |
| 59 return JS_FreezeObject(cx, obj) && JS_FreezeObject(cx, prototype); | |
| 60 } | |
| 61 | |
| 62 static bool | |
| 63 InitAndSealPerfMeasurementClass(JSContext* cx, JS::Handle<JSObject*> global) | |
| 64 { | |
| 65 // Init the PerfMeasurement class | |
| 66 if (!JS::RegisterPerfMeasurement(cx, global)) | |
| 67 return false; | |
| 68 | |
| 69 // Seal up Object, Function, and Array and their prototypes. (This single | |
| 70 // object instance is shared amongst everyone who imports the jsperf module.) | |
| 71 if (!SealObjectAndPrototype(cx, global, "Object") || | |
| 72 !SealObjectAndPrototype(cx, global, "Function") || | |
| 73 !SealObjectAndPrototype(cx, global, "Array")) | |
| 74 return false; | |
| 75 | |
| 76 // Finally, seal the global object, for good measure. (But not recursively; | |
| 77 // this breaks things.) | |
| 78 return JS_FreezeObject(cx, global); | |
| 79 } | |
| 80 | |
| 81 NS_IMETHODIMP | |
| 82 Module::Call(nsIXPConnectWrappedNative* wrapper, | |
| 83 JSContext* cx, | |
| 84 JSObject* obj, | |
| 85 const JS::CallArgs& args, | |
| 86 bool* _retval) | |
| 87 { | |
| 88 | |
| 89 mozJSComponentLoader* loader = mozJSComponentLoader::Get(); | |
| 90 JS::Rooted<JSObject*> targetObj(cx); | |
| 91 nsresult rv = loader->FindTargetObject(cx, &targetObj); | |
| 92 NS_ENSURE_SUCCESS(rv, rv); | |
| 93 | |
| 94 *_retval = InitAndSealPerfMeasurementClass(cx, targetObj); | |
| 95 return NS_OK; | |
| 96 } | |
| 97 | |
| 98 } | |
| 99 } | |
| 100 | |
| 101 NS_DEFINE_NAMED_CID(JSPERF_CID); | |
| 102 | |
| 103 static const mozilla::Module::CIDEntry kPerfCIDs[] = { | |
| 104 { &kJSPERF_CID, false, nullptr, mozilla::jsperf::ModuleConstructor }, | |
| 105 { nullptr } | |
| 106 }; | |
| 107 | |
| 108 static const mozilla::Module::ContractIDEntry kPerfContracts[] = { | |
| 109 { JSPERF_CONTRACTID, &kJSPERF_CID }, | |
| 110 { nullptr } | |
| 111 }; | |
| 112 | |
| 113 static const mozilla::Module kPerfModule = { | |
| 114 mozilla::Module::kVersion, | |
| 115 kPerfCIDs, | |
| 116 kPerfContracts | |
| 117 }; | |
| 118 | |
| 119 NSMODULE_DEFN(jsperf) = &kPerfModule; |
