mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
112 lines
2.9 KiB
C++
112 lines
2.9 KiB
C++
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ChromeWorkerScope.h"
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#include "jsapi.h"
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#include "nsXPCOM.h"
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#include "nsNativeCharsetUtils.h"
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#include "nsStringGlue.h"
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#include "WorkerPrivate.h"
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#define CTYPES_STR "ctypes"
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using namespace mozilla::dom;
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USING_WORKERS_NAMESPACE
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namespace {
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#ifdef BUILD_CTYPES
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char*
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UnicodeToNative(JSContext* aCx, const jschar* aSource, size_t aSourceLen)
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{
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nsDependentString unicode(aSource, aSourceLen);
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nsAutoCString native;
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if (NS_FAILED(NS_CopyUnicodeToNative(unicode, native))) {
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JS_ReportError(aCx, "Could not convert string to native charset!");
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return nullptr;
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}
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char* result = static_cast<char*>(JS_malloc(aCx, native.Length() + 1));
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if (!result) {
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return nullptr;
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}
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memcpy(result, native.get(), native.Length());
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result[native.Length()] = 0;
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return result;
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}
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JSCTypesCallbacks gCTypesCallbacks = {
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UnicodeToNative
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};
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JSBool
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CTypesLazyGetter(JSContext* aCx, JSHandleObject aObj, JSHandleId aId, JSMutableHandleValue aVp)
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{
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NS_ASSERTION(JS_GetGlobalObject(aCx) == aObj, "Not a global object!");
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NS_ASSERTION(JSID_IS_STRING(aId), "Bad id!");
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NS_ASSERTION(JS_FlatStringEqualsAscii(JSID_TO_FLAT_STRING(aId), CTYPES_STR),
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"Bad id!");
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WorkerPrivate* worker = GetWorkerPrivateFromContext(aCx);
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NS_ASSERTION(worker->IsChromeWorker(), "This should always be true!");
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if (!worker->DisableMemoryReporter()) {
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return false;
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}
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jsval ctypes;
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if (!JS_DeletePropertyById(aCx, aObj, aId) ||
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!JS_InitCTypesClass(aCx, aObj) ||
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!JS_GetPropertyById(aCx, aObj, aId, &ctypes)) {
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return false;
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}
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JS_SetCTypesCallbacks(JSVAL_TO_OBJECT(ctypes), &gCTypesCallbacks);
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return JS_GetPropertyById(aCx, aObj, aId, aVp.address());
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}
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#endif
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inline bool
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DefineCTypesLazyGetter(JSContext* aCx, JSObject* aGlobal)
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{
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#ifdef BUILD_CTYPES
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{
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JSString* ctypesStr = JS_InternString(aCx, CTYPES_STR);
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if (!ctypesStr) {
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return false;
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}
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jsid ctypesId = INTERNED_STRING_TO_JSID(aCx, ctypesStr);
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// We use a lazy getter here to let us unregister the blocking memory
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// reporter since ctypes can easily block the worker thread and we can
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// deadlock. Remove once bug 673323 is fixed.
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if (!JS_DefinePropertyById(aCx, aGlobal, ctypesId, JSVAL_VOID,
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CTypesLazyGetter, NULL, 0)) {
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return false;
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}
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}
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#endif
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return true;
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}
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} // anonymous namespace
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BEGIN_WORKERS_NAMESPACE
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bool
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DefineChromeWorkerFunctions(JSContext* aCx, JSObject* aGlobal)
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{
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// Currently ctypes is the only special property given to ChromeWorkers.
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return DefineCTypesLazyGetter(aCx, aGlobal);
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}
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END_WORKERS_NAMESPACE
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