netwerk/protocol/about/src/nsAboutBloat.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   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 mozilla.org code.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
  29  * under the terms of either the GPL or the LGPL, and not to allow others to
  30  * use your version of this file under the terms of the MPL, indicate your
  31  * decision by deleting the provisions above and replace them with the notice
  32  * and other provisions required by the GPL or the LGPL. If you do not delete
  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #include "nsTraceRefcntImpl.h"
  39
  40 // if NS_BUILD_REFCNT_LOGGING isn't defined, don't try to build
  41 #ifdef NS_BUILD_REFCNT_LOGGING
  42
  43 #include "nsAboutBloat.h"
  44 #include "nsIIOService.h"
  45 #include "nsIServiceManager.h"
  46 #include "nsStringStream.h"
  47 #include "nsXPIDLString.h"
  48 #include "nsIURI.h"
  49 #include "prtime.h"
  50 #include "nsCOMPtr.h"
  51 #include "nsIFileStreams.h"
  52 #include "nsNetUtil.h"
  53 #include "nsDirectoryServiceDefs.h"
  54 #include "nsILocalFile.h"
  55
  56 #ifdef XP_MAC
  57 extern "C" void GC_gcollect(void);
  58 #else
  59 static void GC_gcollect() {}
  60 #endif
  61
  62 NS_IMPL_ISUPPORTS1(nsAboutBloat, nsIAboutModule)
  63
  64 NS_IMETHODIMP
  65 nsAboutBloat::NewChannel(nsIURI *aURI, nsIChannel **result)
  66 {
  67     NS_ENSURE_ARG_POINTER(aURI);
  68     nsresult rv;
  69     nsCAutoString path;
  70     rv = aURI->GetPath(path);
  71     if (NS_FAILED(rv)) return rv;
  72
  73     nsTraceRefcntImpl::StatisticsType statType = nsTraceRefcntImpl::ALL_STATS;
  74     PRBool clear = PR_FALSE;
  75     PRBool leaks = PR_FALSE;
  76
  77     PRInt32 pos = path.Find("?");
  78     if (pos > 0) {
  79         nsCAutoString param;
  80         (void)path.Right(param, path.Length() - (pos+1));
  81         if (param.EqualsLiteral("new"))
  82             statType = nsTraceRefcntImpl::NEW_STATS;
  83         else if (param.EqualsLiteral("clear"))
  84             clear = PR_TRUE;
  85         else if (param.EqualsLiteral("leaks"))
  86             leaks = PR_TRUE;
  87     }
  88
  89     nsCOMPtr<nsIInputStream> inStr;
  90     if (clear) {
  91         nsTraceRefcntImpl::ResetStatistics();
  92
  93         const char* msg = "Bloat statistics cleared.";
  94         rv = NS_NewCStringInputStream(getter_AddRefs(inStr), nsDependentCString(msg));
  95         if (NS_FAILED(rv)) return rv;
  96     }
  97     else if (leaks) {
  98         // dump the current set of leaks.
  99         GC_gcollect();
 100
 101         const char* msg = "Memory leaks dumped.";
 102         rv = NS_NewCStringInputStream(getter_AddRefs(inStr), nsDependentCString(msg));
 103         if (NS_FAILED(rv)) return rv;
 104     }
 105     else {
 106         nsCOMPtr<nsIFile> file;
 107         rv = NS_GetSpecialDirectory(NS_OS_CURRENT_PROCESS_DIR,
 108                                     getter_AddRefs(file));
 109         if (NS_FAILED(rv)) return rv;
 110
 111         rv = file->AppendNative(NS_LITERAL_CSTRING("bloatlogs"));
 112         if (NS_FAILED(rv)) return rv;
 113
 114         PRBool exists;
 115         rv = file->Exists(&exists);
 116         if (NS_FAILED(rv)) return rv;
 117
 118         if (!exists) {
 119             // On all the platforms that I know use permissions,
 120             // directories need to have the executable flag set
 121             // if you want to do anything inside the directory.
 122             rv = file->Create(nsIFile::DIRECTORY_TYPE, 0755);
 123             if (NS_FAILED(rv)) return rv;
 124         }
 125
 126         nsCAutoString dumpFileName;
 127         if (statType == nsTraceRefcntImpl::ALL_STATS)
 128             dumpFileName.AssignLiteral("all-");
 129         else
 130             dumpFileName.AssignLiteral("new-");
 131         PRExplodedTime expTime;
 132         PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &expTime);
 133         char time[128];
 134         PR_FormatTimeUSEnglish(time, 128, "%Y-%m-%d-%H%M%S.txt", &expTime);
 135         dumpFileName += time;
 136         rv = file->AppendNative(dumpFileName);
 137         if (NS_FAILED(rv)) return rv;
 138
 139         FILE* out;
 140         nsCOMPtr<nsILocalFile> lfile = do_QueryInterface(file);
 141         if (lfile == nsnull)
 142             return NS_ERROR_FAILURE;
 143         rv = lfile->OpenANSIFileDesc("w", &out);
 144         if (NS_FAILED(rv)) return rv;
 145
 146         rv = nsTraceRefcntImpl::DumpStatistics(statType, out);
 147         ::fclose(out);
 148         if (NS_FAILED(rv)) return rv;
 149
 150         rv = NS_NewLocalFileInputStream(getter_AddRefs(inStr), file);
 151         if (NS_FAILED(rv)) return rv;
 152     }
 153
 154     nsIChannel* channel;
 155     rv = NS_NewInputStreamChannel(&channel, aURI, inStr,
 156                                   NS_LITERAL_CSTRING("text/plain"),
 157                                   NS_LITERAL_CSTRING("utf-8"));
 158     if (NS_FAILED(rv)) return rv;
 159
 160     *result = channel;
 161     return rv;
 162 }
 163
 164 NS_IMETHODIMP
 165 nsAboutBloat::GetURIFlags(nsIURI *aURI, PRUint32 *result)
 166 {
 167     *result = 0;
 168     return NS_OK;
 169 }
 170
 171 NS_METHOD
 172 nsAboutBloat::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
 173 {
 174     nsAboutBloat* about = new nsAboutBloat();
 175     if (about == nsnull)
 176         return NS_ERROR_OUT_OF_MEMORY;
 177     NS_ADDREF(about);
 178     nsresult rv = about->QueryInterface(aIID, aResult);
 179     NS_RELEASE(about);
 180     return rv;
 181 }
 182
 183 ////////////////////////////////////////////////////////////////////////////////
 184 #endif /* NS_BUILD_REFCNT_LOGGING */