heap/VTableSpectrum.cpp

   1 /*
   2  * Copyright (C) 2011 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "VTableSpectrum.h"
  28
  29 #include "JSObject.h"
  30 #include "Structure.h"
  31 #include <algorithm>
  32 #include <stdio.h>
  33 #include <wtf/Platform.h>
  34 #include <wtf/Vector.h>
  35
  36 #if PLATFORM(MAC)
  37 #include <dlfcn.h>
  38 #endif
  39
  40 namespace JSC {
  41
  42 VTableSpectrum::VTableSpectrum()
  43 {
  44 }
  45
  46 VTableSpectrum::~VTableSpectrum()
  47 {
  48 }
  49
  50 void VTableSpectrum::countVPtr(void* vTablePointer)
  51 {
  52     add(vTablePointer);
  53 }
  54
  55 void VTableSpectrum::count(JSCell* cell)
  56 {
  57     // FIXME: we need to change this class to count ClassInfos rather than vptrs
  58     UNUSED_PARAM(cell);
  59 }
  60
  61 void VTableSpectrum::dump(FILE* output, const char* comment)
  62 {
  63     fprintf(output, "%s:\n", comment);
  64
  65     Vector<KeyAndCount> list = buildList();
  66
  67     for (size_t index = list.size(); index-- > 0;) {
  68         KeyAndCount item = list.at(index);
  69 #if PLATFORM(MAC)
  70         Dl_info info;
  71         if (dladdr(item.key, &info)) {
  72             char* findResult = strrchr(info.dli_fname, '/');
  73             const char* strippedFileName;
  74
  75             if (findResult)
  76                 strippedFileName = findResult + 1;
  77             else
  78                 strippedFileName = info.dli_fname;
  79
  80             fprintf(output, "    %s:%s(%p): %lu\n", strippedFileName, info.dli_sname, item.key, item.count);
  81             continue;
  82         }
  83 #endif
  84         fprintf(output, "    %p: %lu\n", item.key, item.count);
  85     }
  86
  87     fflush(output);
  88 }
  89
  90 } // namespace JSC