LCOV - code coverage report
Current view: directory - js/xpconnect/src - XPCLog.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 38 4 10.5 %
Date: 2012-06-02 Functions: 7 1 14.3 %

       1                 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2                 :  *
       3                 :  * ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is Mozilla Communicator client code, released
      17                 :  * March 31, 1998.
      18                 :  *
      19                 :  * The Initial Developer of the Original Code is
      20                 :  * Netscape Communications Corporation.
      21                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      22                 :  * the Initial Developer. All Rights Reserved.
      23                 :  *
      24                 :  * Contributor(s):
      25                 :  *   John Bandhauer <jband@netscape.com> (original author)
      26                 :  *
      27                 :  * Alternatively, the contents of this file may be used under the terms of
      28                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      29                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      31                 :  * of those above. If you wish to allow use of your version of this file only
      32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      33                 :  * use your version of this file under the terms of the MPL, indicate your
      34                 :  * decision by deleting the provisions above and replace them with the notice
      35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      36                 :  * the provisions above, a recipient may use your version of this file under
      37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      38                 :  *
      39                 :  * ***** END LICENSE BLOCK ***** */
      40                 : 
      41                 : /* Debug Logging support. */
      42                 : 
      43                 : #include "xpcprivate.h"
      44                 : 
      45                 : // this all only works for DEBUG...
      46                 : #ifdef DEBUG
      47                 : 
      48                 : #define SPACE_COUNT     200
      49                 : #define LINE_LEN        200
      50                 : #define INDENT_FACTOR   2
      51                 : 
      52                 : #define CAN_RUN (g_InitState == 1 || (g_InitState == 0 && Init()))
      53                 : 
      54                 : static char*    g_Spaces;
      55                 : static int      g_InitState = 0;
      56                 : static int      g_Indent = 0;
      57                 : static PRLogModuleInfo* g_LogMod = nsnull;
      58                 : 
      59               0 : static bool Init()
      60                 : {
      61               0 :     g_LogMod = PR_NewLogModule("xpclog");
      62               0 :     g_Spaces = new char[SPACE_COUNT+1];
      63               0 :     if (!g_LogMod || !g_Spaces || !PR_LOG_TEST(g_LogMod,1)) {
      64               0 :         g_InitState = 1;
      65               0 :         XPC_Log_Finish();
      66               0 :         return false;
      67                 :     }
      68               0 :     memset(g_Spaces, ' ', SPACE_COUNT);
      69               0 :     g_Spaces[SPACE_COUNT] = 0;
      70               0 :     g_InitState = 1;
      71               0 :     return true;
      72                 : }
      73                 : 
      74                 : void
      75            1403 : XPC_Log_Finish()
      76                 : {
      77            1403 :     if (g_InitState == 1) {
      78               0 :         delete [] g_Spaces;
      79                 :         // we'd like to properly cleanup the LogModule, but nspr owns that
      80               0 :         g_LogMod = nsnull;
      81                 :     }
      82            1403 :     g_InitState = -1;
      83            1403 : }
      84                 : 
      85                 : void
      86               0 : XPC_Log_print(const char *fmt, ...)
      87                 : {
      88                 :     va_list ap;
      89                 :     char line[LINE_LEN];
      90                 : 
      91               0 :     va_start(ap, fmt);
      92               0 :     PR_vsnprintf(line, sizeof(line)-1, fmt, ap);
      93               0 :     va_end(ap);
      94               0 :     if (g_Indent)
      95               0 :         PR_LogPrint("%s%s",g_Spaces+SPACE_COUNT-(INDENT_FACTOR*g_Indent),line);
      96                 :     else
      97               0 :         PR_LogPrint("%s",line);
      98               0 : }
      99                 : 
     100                 : bool
     101               0 : XPC_Log_Check(int i)
     102                 : {
     103               0 :     return CAN_RUN && PR_LOG_TEST(g_LogMod,1);
     104                 : }
     105                 : 
     106                 : void
     107               0 : XPC_Log_Indent()
     108                 : {
     109               0 :     if (INDENT_FACTOR*(++g_Indent) > SPACE_COUNT)
     110               0 :         g_Indent-- ;
     111               0 : }
     112                 : 
     113                 : void
     114               0 : XPC_Log_Outdent()
     115                 : {
     116               0 :     if (--g_Indent < 0)
     117               0 :         g_Indent++;
     118               0 : }
     119                 : 
     120                 : void
     121               0 : XPC_Log_Clear_Indent()
     122                 : {
     123               0 :     g_Indent = 0;
     124               0 : }
     125                 : 
     126                 : #endif
     127                 : 
     128                 : #ifdef DEBUG_slimwrappers
     129                 : void
     130                 : LogSlimWrapperWillMorph(JSContext *cx, JSObject *obj, const char *propname,
     131                 :                         const char *functionName)
     132                 : {
     133                 :     if (obj && IS_SLIM_WRAPPER(obj)) {
     134                 :         XPCNativeScriptableInfo *si =
     135                 :             GetSlimWrapperProto(obj)->GetScriptableInfo();
     136                 :         printf("***** morphing %s from %s", si->GetJSClass()->name,
     137                 :                functionName);
     138                 :         if (propname)
     139                 :             printf(" for %s", propname);
     140                 :         printf(" (%p, %p)\n", obj,
     141                 :                static_cast<nsISupports*>(xpc_GetJSPrivate(obj)));
     142                 :         xpc_DumpJSStack(cx, false, false, false);
     143                 :     }
     144                 : }
     145                 : 
     146                 : void
     147                 : LogSlimWrapperNotCreated(JSContext *cx, nsISupports *obj, const char *reason)
     148                 : {
     149                 :     char* className = nsnull;
     150                 :     nsCOMPtr<nsIClassInfo> ci = do_QueryInterface(obj);
     151                 :     if (ci)
     152                 :         ci->GetClassDescription(&className);
     153                 :     printf("***** refusing to create slim wrapper%s%s, reason: %s (%p)\n",
     154                 :            className ? " for " : "", className ? className : "", reason, obj);
     155                 :     if (className)
     156                 :         PR_Free(className);
     157                 :     JSAutoRequest autoRequest(cx);
     158                 :     xpc_DumpJSStack(cx, false, false, false);
     159                 : }
     160                 : #endif

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