The Tor Browser / file comparison
comparison: toolkit/devtools/server/nsJSInspector.cpp
toolkit/devtools/server/nsJSInspector.cpp
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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 "nsJSInspector.h" | |
| 7 #include "nsIXPConnect.h" | |
| 8 #include "nsThreadUtils.h" | |
| 9 #include "jsfriendapi.h" | |
| 10 #include "js/OldDebugAPI.h" | |
| 11 #include "mozilla/HoldDropJSObjects.h" | |
| 12 #include "mozilla/ModuleUtils.h" | |
| 13 #include "mozilla/dom/ScriptSettings.h" | |
| 14 #include "nsServiceManagerUtils.h" | |
| 15 #include "nsMemory.h" | |
| 16 #include "nsArray.h" | |
| 17 #include "nsTArray.h" | |
| 18 | |
| 19 #define JSINSPECTOR_CONTRACTID \ | |
| 20 "@mozilla.org/jsinspector;1" | |
| 21 | |
| 22 #define JSINSPECTOR_CID \ | |
| 23 { 0xec5aa99c, 0x7abb, 0x4142, { 0xac, 0x5f, 0xaa, 0xb2, 0x41, 0x9e, 0x38, 0xe2 } } | |
| 24 | |
| 25 namespace mozilla { | |
| 26 namespace jsinspector { | |
| 27 | |
| 28 NS_GENERIC_FACTORY_CONSTRUCTOR(nsJSInspector) | |
| 29 | |
| 30 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsJSInspector) | |
| 31 NS_INTERFACE_MAP_ENTRY(nsISupports) | |
| 32 NS_INTERFACE_MAP_ENTRY(nsIJSInspector) | |
| 33 NS_INTERFACE_MAP_END | |
| 34 | |
| 35 NS_IMPL_CYCLE_COLLECTION_CLASS(nsJSInspector) | |
| 36 | |
| 37 NS_IMPL_CYCLE_COLLECTING_ADDREF(nsJSInspector) | |
| 38 NS_IMPL_CYCLE_COLLECTING_RELEASE(nsJSInspector) | |
| 39 | |
| 40 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsJSInspector) | |
| 41 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS | |
| 42 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END | |
| 43 | |
| 44 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsJSInspector) | |
| 45 tmp->mRequestors.Clear(); | |
| 46 tmp->mLastRequestor = JS::NullValue(); | |
| 47 NS_IMPL_CYCLE_COLLECTION_UNLINK_END | |
| 48 | |
| 49 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsJSInspector) | |
| 50 for (uint32_t i = 0; i < tmp->mRequestors.Length(); ++i) { | |
| 51 NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mRequestors[i]) | |
| 52 } | |
| 53 NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mLastRequestor) | |
| 54 NS_IMPL_CYCLE_COLLECTION_TRACE_END | |
| 55 | |
| 56 nsJSInspector::nsJSInspector() : mNestedLoopLevel(0), mRequestors(1), mLastRequestor(JSVAL_NULL) | |
| 57 { | |
| 58 } | |
| 59 | |
| 60 nsJSInspector::~nsJSInspector() | |
| 61 { | |
| 62 MOZ_ASSERT(mRequestors.Length() == 0); | |
| 63 MOZ_ASSERT(mLastRequestor.isNull()); | |
| 64 mozilla::DropJSObjects(this); | |
| 65 } | |
| 66 | |
| 67 NS_IMETHODIMP | |
| 68 nsJSInspector::EnterNestedEventLoop(JS::Handle<JS::Value> requestor, uint32_t *out) | |
| 69 { | |
| 70 nsresult rv = NS_OK; | |
| 71 | |
| 72 mLastRequestor = requestor; | |
| 73 mRequestors.AppendElement(requestor); | |
| 74 mozilla::HoldJSObjects(this); | |
| 75 | |
| 76 mozilla::dom::AutoNoJSAPI nojsapi; | |
| 77 | |
| 78 uint32_t nestLevel = ++mNestedLoopLevel; | |
| 79 while (NS_SUCCEEDED(rv) && mNestedLoopLevel >= nestLevel) { | |
| 80 if (!NS_ProcessNextEvent()) | |
| 81 rv = NS_ERROR_UNEXPECTED; | |
| 82 } | |
| 83 | |
| 84 NS_ASSERTION(mNestedLoopLevel <= nestLevel, | |
| 85 "nested event didn't unwind properly"); | |
| 86 | |
| 87 if (mNestedLoopLevel == nestLevel) { | |
| 88 mLastRequestor = mRequestors.ElementAt(--mNestedLoopLevel); | |
| 89 } | |
| 90 | |
| 91 *out = mNestedLoopLevel; | |
| 92 return rv; | |
| 93 } | |
| 94 | |
| 95 NS_IMETHODIMP | |
| 96 nsJSInspector::ExitNestedEventLoop(uint32_t *out) | |
| 97 { | |
| 98 if (mNestedLoopLevel > 0) { | |
| 99 mRequestors.RemoveElementAt(--mNestedLoopLevel); | |
| 100 if (mNestedLoopLevel > 0) | |
| 101 mLastRequestor = mRequestors.ElementAt(mNestedLoopLevel - 1); | |
| 102 else | |
| 103 mLastRequestor = JSVAL_NULL; | |
| 104 } else { | |
| 105 return NS_ERROR_FAILURE; | |
| 106 } | |
| 107 | |
| 108 *out = mNestedLoopLevel; | |
| 109 | |
| 110 return NS_OK; | |
| 111 } | |
| 112 | |
| 113 NS_IMETHODIMP | |
| 114 nsJSInspector::GetEventLoopNestLevel(uint32_t *out) | |
| 115 { | |
| 116 *out = mNestedLoopLevel; | |
| 117 return NS_OK; | |
| 118 } | |
| 119 | |
| 120 NS_IMETHODIMP | |
| 121 nsJSInspector::GetLastNestRequestor(JS::MutableHandle<JS::Value> out) | |
| 122 { | |
| 123 out.set(mLastRequestor); | |
| 124 return NS_OK; | |
| 125 } | |
| 126 | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 NS_DEFINE_NAMED_CID(JSINSPECTOR_CID); | |
| 131 | |
| 132 static const mozilla::Module::CIDEntry kJSInspectorCIDs[] = { | |
| 133 { &kJSINSPECTOR_CID, false, nullptr, mozilla::jsinspector::nsJSInspectorConstructor }, | |
| 134 { nullptr } | |
| 135 }; | |
| 136 | |
| 137 static const mozilla::Module::ContractIDEntry kJSInspectorContracts[] = { | |
| 138 { JSINSPECTOR_CONTRACTID, &kJSINSPECTOR_CID }, | |
| 139 { nullptr } | |
| 140 }; | |
| 141 | |
| 142 static const mozilla::Module kJSInspectorModule = { | |
| 143 mozilla::Module::kVersion, | |
| 144 kJSInspectorCIDs, | |
| 145 kJSInspectorContracts | |
| 146 }; | |
| 147 | |
| 148 NSMODULE_DEFN(jsinspector) = &kJSInspectorModule; |
