diff options
Diffstat (limited to 'dom/base/ScriptSettings.cpp')
| -rw-r--r-- | dom/base/ScriptSettings.cpp | 839 |
1 files changed, 0 insertions, 839 deletions
diff --git a/dom/base/ScriptSettings.cpp b/dom/base/ScriptSettings.cpp deleted file mode 100644 index 92ab221c95..0000000000 --- a/dom/base/ScriptSettings.cpp +++ /dev/null @@ -1,839 +0,0 @@ -/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/* vim: set ts=8 sts=2 et sw=2 tw=80: */ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ - -#include "mozilla/dom/ScriptSettings.h" -#include "mozilla/ThreadLocal.h" -#include "mozilla/Assertions.h" -#include "mozilla/CycleCollectedJSContext.h" - -#include "jsapi.h" -#include "xpcpublic.h" -#include "nsIGlobalObject.h" -#include "nsIDocShell.h" -#include "nsIScriptGlobalObject.h" -#include "nsIScriptContext.h" -#include "nsContentUtils.h" -#include "nsGlobalWindow.h" -#include "nsPIDOMWindow.h" -#include "nsTArray.h" -#include "nsJSUtils.h" -#include "nsDOMJSUtils.h" -#include "WorkerPrivate.h" - -namespace mozilla { -namespace dom { - -static MOZ_THREAD_LOCAL(ScriptSettingsStackEntry*) sScriptSettingsTLS; -static bool sScriptSettingsTLSInitialized; - -class ScriptSettingsStack { -public: - static ScriptSettingsStackEntry* Top() { - return sScriptSettingsTLS.get(); - } - - static void Push(ScriptSettingsStackEntry *aEntry) { - MOZ_ASSERT(!aEntry->mOlder); - // Whenever JSAPI use is disabled, the next stack entry pushed must - // not be an AutoIncumbentScript. - MOZ_ASSERT_IF(!Top() || Top()->NoJSAPI(), - !aEntry->IsIncumbentScript()); - // Whenever the top entry is not an incumbent canidate, the next stack entry - // pushed must not be an AutoIncumbentScript. - MOZ_ASSERT_IF(Top() && !Top()->IsIncumbentCandidate(), - !aEntry->IsIncumbentScript()); - - aEntry->mOlder = Top(); - sScriptSettingsTLS.set(aEntry); - } - - static void Pop(ScriptSettingsStackEntry *aEntry) { - MOZ_ASSERT(aEntry == Top()); - sScriptSettingsTLS.set(aEntry->mOlder); - } - - static nsIGlobalObject* IncumbentGlobal() { - ScriptSettingsStackEntry *entry = Top(); - while (entry) { - if (entry->IsIncumbentCandidate()) { - return entry->mGlobalObject; - } - entry = entry->mOlder; - } - return nullptr; - } - - static ScriptSettingsStackEntry* EntryPoint() { - ScriptSettingsStackEntry *entry = Top(); - while (entry) { - if (entry->IsEntryCandidate()) { - return entry; - } - entry = entry->mOlder; - } - return nullptr; - } - - static nsIGlobalObject* EntryGlobal() { - ScriptSettingsStackEntry *entry = EntryPoint(); - if (!entry) { - return nullptr; - } - return entry->mGlobalObject; - } - -#ifdef DEBUG - static ScriptSettingsStackEntry* TopNonIncumbentScript() { - ScriptSettingsStackEntry *entry = Top(); - while (entry) { - if (!entry->IsIncumbentScript()) { - return entry; - } - entry = entry->mOlder; - } - return nullptr; - } -#endif // DEBUG - -}; - -static unsigned long gRunToCompletionListeners = 0; - -void -UseEntryScriptProfiling() -{ - MOZ_ASSERT(NS_IsMainThread()); - ++gRunToCompletionListeners; -} - -void -UnuseEntryScriptProfiling() -{ - MOZ_ASSERT(NS_IsMainThread()); - MOZ_ASSERT(gRunToCompletionListeners > 0); - --gRunToCompletionListeners; -} - -void -InitScriptSettings() -{ - bool success = sScriptSettingsTLS.init(); - if (!success) { - MOZ_CRASH(); - } - - sScriptSettingsTLS.set(nullptr); - sScriptSettingsTLSInitialized = true; -} - -void -DestroyScriptSettings() -{ - MOZ_ASSERT(sScriptSettingsTLS.get() == nullptr); -} - -bool -ScriptSettingsInitialized() -{ - return sScriptSettingsTLSInitialized; -} - -ScriptSettingsStackEntry::ScriptSettingsStackEntry(nsIGlobalObject *aGlobal, - Type aType) - : mGlobalObject(aGlobal) - , mType(aType) - , mOlder(nullptr) -{ - MOZ_ASSERT_IF(IsIncumbentCandidate() && !NoJSAPI(), mGlobalObject); - MOZ_ASSERT(!mGlobalObject || mGlobalObject->GetGlobalJSObject(), - "Must have an actual JS global for the duration on the stack"); - MOZ_ASSERT(!mGlobalObject || - JS_IsGlobalObject(mGlobalObject->GetGlobalJSObject()), - "No outer windows allowed"); -} - -ScriptSettingsStackEntry::~ScriptSettingsStackEntry() -{ - // We must have an actual JS global for the entire time this is on the stack. - MOZ_ASSERT_IF(mGlobalObject, mGlobalObject->GetGlobalJSObject()); -} - -// If the entry or incumbent global ends up being something that the subject -// principal doesn't subsume, we don't want to use it. This never happens on -// the web, but can happen with asymmetric privilege relationships (i.e. -// nsExpandedPrincipal and System Principal). -// -// The most correct thing to use instead would be the topmost global on the -// callstack whose principal is subsumed by the subject principal. But that's -// hard to compute, so we just substitute the global of the current -// compartment. In practice, this is fine. -// -// Note that in particular things like: -// -// |SpecialPowers.wrap(crossOriginWindow).eval(open())| -// -// trigger this case. Although both the entry global and the current global -// have normal principals, the use of Gecko-specific System-Principaled JS -// puts the code from two different origins on the callstack at once, which -// doesn't happen normally on the web. -static nsIGlobalObject* -ClampToSubject(nsIGlobalObject* aGlobalOrNull) -{ - if (!aGlobalOrNull || !NS_IsMainThread()) { - return aGlobalOrNull; - } - - nsIPrincipal* globalPrin = aGlobalOrNull->PrincipalOrNull(); - NS_ENSURE_TRUE(globalPrin, GetCurrentGlobal()); - if (!nsContentUtils::SubjectPrincipalOrSystemIfNativeCaller()->SubsumesConsideringDomain(globalPrin)) { - return GetCurrentGlobal(); - } - - return aGlobalOrNull; -} - -nsIGlobalObject* -GetEntryGlobal() -{ - return ClampToSubject(ScriptSettingsStack::EntryGlobal()); -} - -nsIDocument* -GetEntryDocument() -{ - nsIGlobalObject* global = GetEntryGlobal(); - nsCOMPtr<nsPIDOMWindowInner> entryWin = do_QueryInterface(global); - - // If our entry global isn't a window, see if it's an addon scope associated - // with a window. If it is, the caller almost certainly wants that rather - // than null. - if (!entryWin && global) { - if (auto* win = xpc::AddonWindowOrNull(global->GetGlobalJSObject())) { - entryWin = win->AsInner(); - } - } - - return entryWin ? entryWin->GetExtantDoc() : nullptr; -} - -nsIGlobalObject* -GetIncumbentGlobal() -{ - // We need the current JSContext in order to check the JS for - // scripted frames that may have appeared since anyone last - // manipulated the stack. If it's null, that means that there - // must be no entry global on the stack, and therefore no incumbent - // global either. - JSContext *cx = nsContentUtils::GetCurrentJSContextForThread(); - if (!cx) { - MOZ_ASSERT(ScriptSettingsStack::EntryGlobal() == nullptr); - return nullptr; - } - - // See what the JS engine has to say. If we've got a scripted caller - // override in place, the JS engine will lie to us and pretend that - // there's nothing on the JS stack, which will cause us to check the - // incumbent script stack below. - if (JSObject *global = JS::GetScriptedCallerGlobal(cx)) { - return ClampToSubject(xpc::NativeGlobal(global)); - } - - // Ok, nothing from the JS engine. Let's use whatever's on the - // explicit stack. - return ClampToSubject(ScriptSettingsStack::IncumbentGlobal()); -} - -nsIGlobalObject* -GetCurrentGlobal() -{ - JSContext *cx = nsContentUtils::GetCurrentJSContextForThread(); - if (!cx) { - return nullptr; - } - - JSObject *global = JS::CurrentGlobalOrNull(cx); - if (!global) { - return nullptr; - } - - return xpc::NativeGlobal(global); -} - -nsIPrincipal* -GetWebIDLCallerPrincipal() -{ - MOZ_ASSERT(NS_IsMainThread()); - ScriptSettingsStackEntry *entry = ScriptSettingsStack::EntryPoint(); - - // If we have an entry point that is not NoJSAPI, we know it must be an - // AutoEntryScript. - if (!entry || entry->NoJSAPI()) { - return nullptr; - } - AutoEntryScript* aes = static_cast<AutoEntryScript*>(entry); - - return aes->mWebIDLCallerPrincipal; -} - -bool -IsJSAPIActive() -{ - ScriptSettingsStackEntry* topEntry = ScriptSettingsStack::Top(); - return topEntry && !topEntry->NoJSAPI(); -} - -namespace danger { -JSContext* -GetJSContext() -{ - return CycleCollectedJSContext::Get()->Context(); -} -} // namespace danger - -JS::RootingContext* -RootingCx() -{ - return CycleCollectedJSContext::Get()->RootingCx(); -} - -AutoJSAPI::AutoJSAPI() - : ScriptSettingsStackEntry(nullptr, eJSAPI) - , mCx(nullptr) - , mIsMainThread(false) // For lack of anything better -{ -} - -AutoJSAPI::~AutoJSAPI() -{ - if (!mCx) { - // No need to do anything here: we never managed to Init, so can't have an - // exception on our (nonexistent) JSContext. We also don't need to restore - // any state on it. Finally, we never made it to pushing outselves onto the - // ScriptSettingsStack, so shouldn't pop. - MOZ_ASSERT(ScriptSettingsStack::Top() != this); - return; - } - - ReportException(); - - if (mOldWarningReporter.isSome()) { - JS::SetWarningReporter(cx(), mOldWarningReporter.value()); - } - - // Leave the request before popping. - if (mIsMainThread) { - mAutoRequest.reset(); - } - - ScriptSettingsStack::Pop(this); -} - -void -WarningOnlyErrorReporter(JSContext* aCx, JSErrorReport* aRep); - -void -AutoJSAPI::InitInternal(nsIGlobalObject* aGlobalObject, JSObject* aGlobal, - JSContext* aCx, bool aIsMainThread) -{ - MOZ_ASSERT(aCx); - MOZ_ASSERT(aCx == danger::GetJSContext()); - MOZ_ASSERT(aIsMainThread == NS_IsMainThread()); - MOZ_ASSERT(bool(aGlobalObject) == bool(aGlobal)); - MOZ_ASSERT_IF(aGlobalObject, aGlobalObject->GetGlobalJSObject() == aGlobal); -#ifdef DEBUG - bool haveException = JS_IsExceptionPending(aCx); -#endif // DEBUG - - mCx = aCx; - mIsMainThread = aIsMainThread; - mGlobalObject = aGlobalObject; - if (aIsMainThread) { - // We _could_ just unconditionally emplace mAutoRequest here. It's just not - // needed on worker threads, and we're hoping to kill it on the main thread - // too. - mAutoRequest.emplace(mCx); - } - if (aGlobal) { - JS::ExposeObjectToActiveJS(aGlobal); - } - mAutoNullableCompartment.emplace(mCx, aGlobal); - - ScriptSettingsStack::Push(this); - - mOldWarningReporter.emplace(JS::GetWarningReporter(aCx)); - - JS::SetWarningReporter(aCx, WarningOnlyErrorReporter); - -#ifdef DEBUG - if (haveException) { - JS::Rooted<JS::Value> exn(aCx); - JS_GetPendingException(aCx, &exn); - - JS_ClearPendingException(aCx); - if (exn.isObject()) { - JS::Rooted<JSObject*> exnObj(aCx, &exn.toObject()); - - nsAutoJSString stack, filename, name, message; - int32_t line; - - JS::Rooted<JS::Value> tmp(aCx); - if (!JS_GetProperty(aCx, exnObj, "filename", &tmp)) { - JS_ClearPendingException(aCx); - } - if (tmp.isUndefined()) { - if (!JS_GetProperty(aCx, exnObj, "fileName", &tmp)) { - JS_ClearPendingException(aCx); - } - } - - if (!filename.init(aCx, tmp)) { - JS_ClearPendingException(aCx); - } - - if (!JS_GetProperty(aCx, exnObj, "stack", &tmp) || - !stack.init(aCx, tmp)) { - JS_ClearPendingException(aCx); - } - - if (!JS_GetProperty(aCx, exnObj, "name", &tmp) || - !name.init(aCx, tmp)) { - JS_ClearPendingException(aCx); - } - - if (!JS_GetProperty(aCx, exnObj, "message", &tmp) || - !message.init(aCx, tmp)) { - JS_ClearPendingException(aCx); - } - - if (!JS_GetProperty(aCx, exnObj, "lineNumber", &tmp) || - !JS::ToInt32(aCx, tmp, &line)) { - JS_ClearPendingException(aCx); - line = 0; - } - - printf_stderr("PREEXISTING EXCEPTION OBJECT: '%s: %s'\n%s:%d\n%s\n", - NS_ConvertUTF16toUTF8(name).get(), - NS_ConvertUTF16toUTF8(message).get(), - NS_ConvertUTF16toUTF8(filename).get(), line, - NS_ConvertUTF16toUTF8(stack).get()); - } else { - // It's a primitive... not much we can do other than stringify it. - nsAutoJSString exnStr; - if (!exnStr.init(aCx, exn)) { - JS_ClearPendingException(aCx); - } - - printf_stderr("PREEXISTING EXCEPTION PRIMITIVE: %s\n", - NS_ConvertUTF16toUTF8(exnStr).get()); - } - MOZ_ASSERT(false, "We had an exception; we should not have"); - } -#endif // DEBUG -} - -AutoJSAPI::AutoJSAPI(nsIGlobalObject* aGlobalObject, - bool aIsMainThread, - Type aType) - : ScriptSettingsStackEntry(aGlobalObject, aType) - , mIsMainThread(aIsMainThread) -{ - MOZ_ASSERT(aGlobalObject); - MOZ_ASSERT(aGlobalObject->GetGlobalJSObject(), "Must have a JS global"); - MOZ_ASSERT(aIsMainThread == NS_IsMainThread()); - - InitInternal(aGlobalObject, aGlobalObject->GetGlobalJSObject(), - danger::GetJSContext(), aIsMainThread); -} - -void -AutoJSAPI::Init() -{ - MOZ_ASSERT(!mCx, "An AutoJSAPI should only be initialised once"); - - InitInternal(/* aGlobalObject */ nullptr, /* aGlobal */ nullptr, - danger::GetJSContext(), NS_IsMainThread()); -} - -bool -AutoJSAPI::Init(nsIGlobalObject* aGlobalObject, JSContext* aCx) -{ - MOZ_ASSERT(!mCx, "An AutoJSAPI should only be initialised once"); - MOZ_ASSERT(aCx); - - if (NS_WARN_IF(!aGlobalObject)) { - return false; - } - - JSObject* global = aGlobalObject->GetGlobalJSObject(); - if (NS_WARN_IF(!global)) { - return false; - } - - InitInternal(aGlobalObject, global, aCx, NS_IsMainThread()); - return true; -} - -bool -AutoJSAPI::Init(nsIGlobalObject* aGlobalObject) -{ - return Init(aGlobalObject, danger::GetJSContext()); -} - -bool -AutoJSAPI::Init(JSObject* aObject) -{ - nsIGlobalObject* global = nullptr; - if (aObject) - global = xpc::NativeGlobal(aObject); - if (global) - return Init(global); - else - return false; -} - -bool -AutoJSAPI::Init(nsPIDOMWindowInner* aWindow, JSContext* aCx) -{ - return Init(nsGlobalWindow::Cast(aWindow), aCx); -} - -bool -AutoJSAPI::Init(nsPIDOMWindowInner* aWindow) -{ - return Init(nsGlobalWindow::Cast(aWindow)); -} - -bool -AutoJSAPI::Init(nsGlobalWindow* aWindow, JSContext* aCx) -{ - return Init(static_cast<nsIGlobalObject*>(aWindow), aCx); -} - -bool -AutoJSAPI::Init(nsGlobalWindow* aWindow) -{ - return Init(static_cast<nsIGlobalObject*>(aWindow)); -} - -// Even with autoJSAPIOwnsErrorReporting, the JS engine still sends warning -// reports to the JSErrorReporter as soon as they are generated. These go -// directly to the console, so we can handle them easily here. -// -// Eventually, SpiderMonkey will have a special-purpose callback for warnings -// only. -void -WarningOnlyErrorReporter(JSContext* aCx, JSErrorReport* aRep) -{ - MOZ_ASSERT(JSREPORT_IS_WARNING(aRep->flags)); - if (!NS_IsMainThread()) { - // Reporting a warning on workers is a bit complicated because we have to - // climb our parent chain until we get to the main thread. So go ahead and - // just go through the worker ReportError codepath here. - // - // That said, it feels like we should be able to short-circuit things a bit - // here by posting an appropriate runnable to the main thread directly... - // Worth looking into sometime. - workers::WorkerPrivate* worker = workers::GetWorkerPrivateFromContext(aCx); - MOZ_ASSERT(worker); - - worker->ReportError(aCx, JS::ConstUTF8CharsZ(), aRep); - return; - } - - RefPtr<xpc::ErrorReport> xpcReport = new xpc::ErrorReport(); - nsGlobalWindow* win = xpc::CurrentWindowOrNull(aCx); - if (!win) { - // We run addons in a separate privileged compartment, but if we're in an - // addon compartment we should log warnings to the console of the associated - // DOM Window. - win = xpc::AddonWindowOrNull(JS::CurrentGlobalOrNull(aCx)); - } - xpcReport->Init(aRep, nullptr, nsContentUtils::IsCallerChrome(), - win ? win->AsInner()->WindowID() : 0); - xpcReport->LogToConsole(); -} - -void -AutoJSAPI::ReportException() -{ - if (!HasException()) { - return; - } - - // AutoJSAPI uses a JSAutoNullableCompartment, and may be in a null - // compartment when the destructor is called. However, the JS engine - // requires us to be in a compartment when we fetch the pending exception. - // In this case, we enter the privileged junk scope and don't dispatch any - // error events. - JS::Rooted<JSObject*> errorGlobal(cx(), JS::CurrentGlobalOrNull(cx())); - if (!errorGlobal) { - if (mIsMainThread) { - errorGlobal = xpc::PrivilegedJunkScope(); - } else { - errorGlobal = workers::GetCurrentThreadWorkerGlobal(); - } - } - JSAutoCompartment ac(cx(), errorGlobal); - JS::Rooted<JS::Value> exn(cx()); - js::ErrorReport jsReport(cx()); - if (StealException(&exn) && - jsReport.init(cx(), exn, js::ErrorReport::WithSideEffects)) { - if (mIsMainThread) { - RefPtr<xpc::ErrorReport> xpcReport = new xpc::ErrorReport(); - - RefPtr<nsGlobalWindow> win = xpc::WindowGlobalOrNull(errorGlobal); - if (!win) { - // We run addons in a separate privileged compartment, but they still - // expect to trigger the onerror handler of their associated DOM Window. - win = xpc::AddonWindowOrNull(errorGlobal); - } - nsPIDOMWindowInner* inner = win ? win->AsInner() : nullptr; - xpcReport->Init(jsReport.report(), jsReport.toStringResult().c_str(), - nsContentUtils::IsCallerChrome(), - inner ? inner->WindowID() : 0); - if (inner && jsReport.report()->errorNumber != JSMSG_OUT_OF_MEMORY) { - JS::RootingContext* rcx = JS::RootingContext::get(cx()); - DispatchScriptErrorEvent(inner, rcx, xpcReport, exn); - } else { - JS::Rooted<JSObject*> stack(cx(), - xpc::FindExceptionStackForConsoleReport(inner, exn)); - xpcReport->LogToConsoleWithStack(stack); - } - } else { - // On a worker, we just use the worker error reporting mechanism and don't - // bother with xpc::ErrorReport. This will ensure that all the right - // events (which are a lot more complicated than in the window case) get - // fired. - workers::WorkerPrivate* worker = workers::GetCurrentThreadWorkerPrivate(); - MOZ_ASSERT(worker); - MOZ_ASSERT(worker->GetJSContext() == cx()); - // Before invoking ReportError, put the exception back on the context, - // because it may want to put it in its error events and has no other way - // to get hold of it. After we invoke ReportError, clear the exception on - // cx(), just in case ReportError didn't. - JS_SetPendingException(cx(), exn); - worker->ReportError(cx(), jsReport.toStringResult(), jsReport.report()); - ClearException(); - } - } else { - NS_WARNING("OOMed while acquiring uncaught exception from JSAPI"); - ClearException(); - } -} - -bool -AutoJSAPI::PeekException(JS::MutableHandle<JS::Value> aVal) -{ - MOZ_ASSERT_IF(mIsMainThread, IsStackTop()); - MOZ_ASSERT(HasException()); - MOZ_ASSERT(js::GetContextCompartment(cx())); - if (!JS_GetPendingException(cx(), aVal)) { - return false; - } - return true; -} - -bool -AutoJSAPI::StealException(JS::MutableHandle<JS::Value> aVal) -{ - if (!PeekException(aVal)) { - return false; - } - JS_ClearPendingException(cx()); - return true; -} - -#ifdef DEBUG -bool -AutoJSAPI::IsStackTop() const -{ - return ScriptSettingsStack::TopNonIncumbentScript() == this; -} -#endif // DEBUG - -AutoEntryScript::AutoEntryScript(nsIGlobalObject* aGlobalObject, - const char *aReason, - bool aIsMainThread) - : AutoJSAPI(aGlobalObject, aIsMainThread, eEntryScript) - , mWebIDLCallerPrincipal(nullptr) -{ - MOZ_ASSERT(aGlobalObject); - - if (aIsMainThread && gRunToCompletionListeners > 0) { - mDocShellEntryMonitor.emplace(cx(), aReason); - } -} - -AutoEntryScript::AutoEntryScript(JSObject* aObject, - const char *aReason, - bool aIsMainThread) - : AutoEntryScript(xpc::NativeGlobal(aObject), aReason, aIsMainThread) -{ -} - -AutoEntryScript::~AutoEntryScript() -{ - // GC when we pop a script entry point. This is a useful heuristic that helps - // us out on certain (flawed) benchmarks like sunspider, because it lets us - // avoid GCing during the timing loop. - JS_MaybeGC(cx()); -} - -AutoEntryScript::DocshellEntryMonitor::DocshellEntryMonitor(JSContext* aCx, - const char* aReason) - : JS::dbg::AutoEntryMonitor(aCx) - , mReason(aReason) -{ -} - -void -AutoEntryScript::DocshellEntryMonitor::Entry(JSContext* aCx, JSFunction* aFunction, - JSScript* aScript, JS::Handle<JS::Value> aAsyncStack, - const char* aAsyncCause) -{ - JS::Rooted<JSFunction*> rootedFunction(aCx); - if (aFunction) { - rootedFunction = aFunction; - } - JS::Rooted<JSScript*> rootedScript(aCx); - if (aScript) { - rootedScript = aScript; - } - - nsCOMPtr<nsPIDOMWindowInner> window = - do_QueryInterface(xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx))); - if (!window || !window->GetDocShell() || - !window->GetDocShell()->GetRecordProfileTimelineMarkers()) { - return; - } - - nsCOMPtr<nsIDocShell> docShellForJSRunToCompletion = window->GetDocShell(); - nsString filename; - uint32_t lineNumber = 0; - - js::AutoStableStringChars functionName(aCx); - if (rootedFunction) { - JS::Rooted<JSString*> displayId(aCx, JS_GetFunctionDisplayId(rootedFunction)); - if (displayId) { - if (!functionName.initTwoByte(aCx, displayId)) { - JS_ClearPendingException(aCx); - return; - } - } - } - - if (!rootedScript) { - rootedScript = JS_GetFunctionScript(aCx, rootedFunction); - } - if (rootedScript) { - filename = NS_ConvertUTF8toUTF16(JS_GetScriptFilename(rootedScript)); - lineNumber = JS_GetScriptBaseLineNumber(aCx, rootedScript); - } - - if (!filename.IsEmpty() || functionName.isTwoByte()) { - const char16_t* functionNameChars = functionName.isTwoByte() ? - functionName.twoByteChars() : nullptr; - - docShellForJSRunToCompletion->NotifyJSRunToCompletionStart(mReason, - functionNameChars, - filename.BeginReading(), - lineNumber, aAsyncStack, - aAsyncCause); - } -} - -void -AutoEntryScript::DocshellEntryMonitor::Exit(JSContext* aCx) -{ - nsCOMPtr<nsPIDOMWindowInner> window = - do_QueryInterface(xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx))); - // Not really worth checking GetRecordProfileTimelineMarkers here. - if (window && window->GetDocShell()) { - nsCOMPtr<nsIDocShell> docShellForJSRunToCompletion = window->GetDocShell(); - docShellForJSRunToCompletion->NotifyJSRunToCompletionStop(); - } -} - -AutoIncumbentScript::AutoIncumbentScript(nsIGlobalObject* aGlobalObject) - : ScriptSettingsStackEntry(aGlobalObject, eIncumbentScript) - , mCallerOverride(nsContentUtils::GetCurrentJSContextForThread()) -{ - ScriptSettingsStack::Push(this); -} - -AutoIncumbentScript::~AutoIncumbentScript() -{ - ScriptSettingsStack::Pop(this); -} - -AutoNoJSAPI::AutoNoJSAPI() - : ScriptSettingsStackEntry(nullptr, eNoJSAPI) -{ - ScriptSettingsStack::Push(this); -} - -AutoNoJSAPI::~AutoNoJSAPI() -{ - ScriptSettingsStack::Pop(this); -} - -} // namespace dom - -AutoJSContext::AutoJSContext(MOZ_GUARD_OBJECT_NOTIFIER_ONLY_PARAM_IN_IMPL) - : mCx(nullptr) -{ - JS::AutoSuppressGCAnalysis nogc; - MOZ_ASSERT(!mCx, "mCx should not be initialized!"); - MOZ_ASSERT(NS_IsMainThread()); - - MOZ_GUARD_OBJECT_NOTIFIER_INIT; - - if (dom::IsJSAPIActive()) { - mCx = dom::danger::GetJSContext(); - } else { - mJSAPI.Init(); - mCx = mJSAPI.cx(); - } -} - -AutoJSContext::operator JSContext*() const -{ - return mCx; -} - -AutoSafeJSContext::AutoSafeJSContext(MOZ_GUARD_OBJECT_NOTIFIER_ONLY_PARAM_IN_IMPL) - : AutoJSAPI() -{ - MOZ_ASSERT(NS_IsMainThread()); - - MOZ_GUARD_OBJECT_NOTIFIER_INIT; - - DebugOnly<bool> ok = Init(xpc::UnprivilegedJunkScope()); - MOZ_ASSERT(ok, - "This is quite odd. We should have crashed in the " - "xpc::NativeGlobal() call if xpc::UnprivilegedJunkScope() " - "returned null, and inited correctly otherwise!"); -} - -AutoSlowOperation::AutoSlowOperation(MOZ_GUARD_OBJECT_NOTIFIER_ONLY_PARAM_IN_IMPL) - : AutoJSAPI() -{ - MOZ_ASSERT(NS_IsMainThread()); - - MOZ_GUARD_OBJECT_NOTIFIER_INIT; - - Init(); -} - -void -AutoSlowOperation::CheckForInterrupt() -{ - // JS_CheckForInterrupt expects us to be in a compartment. - JSAutoCompartment ac(cx(), xpc::UnprivilegedJunkScope()); - JS_CheckForInterrupt(cx()); -} - -} // namespace mozilla |