LCOV - app.info - dom/workers/ChromeWorkerScope.cpp

LCOV - code coverage report
| Current view: | directory - dom/workers - ChromeWorkerScope.cpp (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 37 | 0 | 0.0 %
| Date: | 2012-04-21 | Functions: | 4 | 0 | 0.0 %

           1                 : /* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
           2                 : /* ***** BEGIN LICENSE BLOCK *****
           3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           4                 :  *
           5                 :  * The contents of this file are subject to the Mozilla Public License Version
           6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           7                 :  * the License. You may obtain a copy of the License at
           8                 :  * http://www.mozilla.org/MPL/
           9                 :  *
          10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          12                 :  * for the specific language governing rights and limitations under the
          13                 :  * License.
          14                 :  *
          15                 :  * The Original Code is Web Workers.
          16                 :  *
          17                 :  * The Initial Developer of the Original Code is
          18                 :  *   The Mozilla Foundation.
          19                 :  * Portions created by the Initial Developer are Copyright (C) 2011
          20                 :  * the Initial Developer. All Rights Reserved.
          21                 :  *
          22                 :  * Contributor(s):
          23                 :  *   Ben Turner <bent.mozilla@gmail.com> (Original Author)
          24                 :  *
          25                 :  * Alternatively, the contents of this file may be used under the terms of
          26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
          27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          29                 :  * of those above. If you wish to allow use of your version of this file only
          30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          31                 :  * use your version of this file under the terms of the MPL, indicate your
          32                 :  * decision by deleting the provisions above and replace them with the notice
          33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          34                 :  * the provisions above, a recipient may use your version of this file under
          35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          36                 :  *
          37                 :  * ***** END LICENSE BLOCK ***** */
          38                 :
          39                 : #include "ChromeWorkerScope.h"
          40                 :
          41                 : #include "jsapi.h"
          42                 :
          43                 : #include "nsXPCOM.h"
          44                 : #include "nsNativeCharsetUtils.h"
          45                 : #include "nsStringGlue.h"
          46                 :
          47                 : #include "WorkerPrivate.h"
          48                 :
          49                 : #define CTYPES_STR "ctypes"
          50                 :
          51                 : USING_WORKERS_NAMESPACE
          52                 :
          53                 : namespace {
          54                 :
          55                 : #ifdef BUILD_CTYPES
          56                 : char*
          57               0 : UnicodeToNative(JSContext* aCx, const jschar* aSource, size_t aSourceLen)
          58                 : {
          59               0 :   nsDependentString unicode(aSource, aSourceLen);
          60                 :
          61               0 :   nsCAutoString native;
          62               0 :   if (NS_FAILED(NS_CopyUnicodeToNative(unicode, native))) {
          63               0 :     JS_ReportError(aCx, "Could not convert string to native charset!");
          64               0 :     return nsnull;
          65                 :   }
          66                 :
          67               0 :   char* result = static_cast<char*>(JS_malloc(aCx, native.Length() + 1));
          68               0 :   if (!result) {
          69               0 :     return nsnull;
          70                 :   }
          71                 :
          72               0 :   memcpy(result, native.get(), native.Length());
          73               0 :   result[native.Length()] = 0;
          74               0 :   return result;
          75                 : }
          76                 :
          77                 : JSCTypesCallbacks gCTypesCallbacks = {
          78                 :   UnicodeToNative
          79                 : };
          80                 :
          81                 : JSBool
          82               0 : CTypesLazyGetter(JSContext* aCx, JSObject* aObj, jsid aId, jsval* aVp)
          83                 : {
          84               0 :   NS_ASSERTION(JS_GetGlobalObject(aCx) == aObj, "Not a global object!");
          85               0 :   NS_ASSERTION(JSID_IS_STRING(aId), "Bad id!");
          86               0 :   NS_ASSERTION(JS_FlatStringEqualsAscii(JSID_TO_FLAT_STRING(aId), CTYPES_STR),
          87                 :                "Bad id!");
          88                 :
          89               0 :   WorkerPrivate* worker = GetWorkerPrivateFromContext(aCx);
          90               0 :   NS_ASSERTION(worker->IsChromeWorker(), "This should always be true!");
          91                 :
          92               0 :   if (!worker->DisableMemoryReporter()) {
          93               0 :     return false;
          94                 :   }
          95                 :
          96                 :   jsval ctypes;
          97               0 :   if (!JS_DeletePropertyById(aCx, aObj, aId) ||
          98               0 :       !JS_InitCTypesClass(aCx, aObj) ||
          99               0 :       !JS_GetPropertyById(aCx, aObj, aId, &ctypes)) {
         100               0 :     return false;
         101                 :   }
         102               0 :   JS_SetCTypesCallbacks(JSVAL_TO_OBJECT(ctypes), &gCTypesCallbacks);
         103               0 :   return JS_GetPropertyById(aCx, aObj, aId, aVp);
         104                 : }
         105                 : #endif
         106                 :
         107                 : inline bool
         108               0 : DefineCTypesLazyGetter(JSContext* aCx, JSObject* aGlobal)
         109                 : {
         110                 : #ifdef BUILD_CTYPES
         111                 :   {
         112               0 :     JSString* ctypesStr = JS_InternString(aCx, CTYPES_STR);
         113               0 :     if (!ctypesStr) {
         114               0 :       return false;
         115                 :     }
         116                 :
         117               0 :     jsid ctypesId = INTERNED_STRING_TO_JSID(aCx, ctypesStr);
         118                 :
         119                 :     // We use a lazy getter here to let us unregister the blocking memory
         120                 :     // reporter since ctypes can easily block the worker thread and we can
         121                 :     // deadlock. Remove once bug 673323 is fixed.
         122               0 :     if (!JS_DefinePropertyById(aCx, aGlobal, ctypesId, JSVAL_VOID,
         123               0 :                                CTypesLazyGetter, NULL, 0)) {
         124               0 :       return false;
         125                 :     }
         126                 :   }
         127                 : #endif
         128                 :
         129               0 :   return true;
         130                 : }
         131                 :
         132                 : } // anonymous namespace
         133                 :
         134                 : BEGIN_WORKERS_NAMESPACE
         135                 :
         136                 : namespace chromeworker {
         137                 :
         138                 : bool
         139               0 : DefineChromeWorkerFunctions(JSContext* aCx, JSObject* aGlobal)
         140                 : {
         141                 :   // Currently ctypes is the only special property given to ChromeWorkers.
         142               0 :   return DefineCTypesLazyGetter(aCx, aGlobal);
         143                 : }
         144                 :
         145                 : } // namespace chromeworker
         146                 :
         147                 : END_WORKERS_NAMESPACE

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