2 * Copyright (C) 2011 Apple Inc. All rights reserved.
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5 * modification, are permitted provided that the following conditions
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27 #include "VTableSpectrum.h"
30 #include "Structure.h"
33 #include <wtf/Platform.h>
34 #include <wtf/Vector.h>
42 VTableSpectrum::VTableSpectrum()
46 VTableSpectrum::~VTableSpectrum()
50 void VTableSpectrum::countVPtr(void* vTablePointer)
52 std::pair<HashMap<void*, unsigned long>::iterator, bool> result = m_map.add(vTablePointer, 1);
54 result.first->second++;
57 void VTableSpectrum::count(JSCell* cell)
59 countVPtr(cell->vptr());
62 struct VTableAndCount {
68 VTableAndCount(void* vtable, unsigned long count)
74 bool operator<(const VTableAndCount& other) const
76 if (count != other.count)
77 return count < other.count;
78 return vtable > other.vtable; // this results in lower-addressed vtables being printed first
82 void VTableSpectrum::dump(FILE* output, const char* comment)
84 fprintf(output, "%s:\n", comment);
86 HashMap<void*, unsigned long>::iterator begin = m_map.begin();
87 HashMap<void*, unsigned long>::iterator end = m_map.end();
89 Vector<VTableAndCount, 0> list;
91 for (HashMap<void*, unsigned long>::iterator iter = begin; iter != end; ++iter)
92 list.append(VTableAndCount(iter->first, iter->second));
94 std::sort(list.begin(), list.end());
96 for (size_t index = list.size(); index-- > 0;) {
97 VTableAndCount item = list.at(index);
100 if (dladdr(item.vtable, &info)) {
101 char* findResult = strrchr(info.dli_fname, '/');
102 const char* strippedFileName;
105 strippedFileName = findResult + 1;
107 strippedFileName = info.dli_fname;
109 fprintf(output, " %s:%s(%p): %lu\n", strippedFileName, info.dli_sname, item.vtable, item.count);
113 fprintf(output, " %p: %lu\n", item.vtable, item.count);