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ProfileTreeNode.h
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123 lines (103 loc) · 3.92 KB
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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ProfileTreeNode_h
#define ProfileTreeNode_h
namespace JSC {
class ProfileTreeNode {
typedef HashMap<String, ProfileTreeNode> Map;
typedef Map::KeyValuePairType MapEntry;
public:
ProfileTreeNode()
: m_count(0)
, m_children(0)
{
}
~ProfileTreeNode()
{
delete m_children;
}
ProfileTreeNode* sampleChild(const char* name)
{
if (!m_children)
m_children = new Map();
ProfileTreeNode newEntry;
Map::AddResult result = m_children->add(String(name), newEntry);
ProfileTreeNode* childInMap = &result.iterator->value;
++childInMap->m_count;
return childInMap;
}
void dump()
{
dumpInternal(0);
}
uint64_t count()
{
return m_count;
}
uint64_t childCount()
{
if (!m_children)
return 0;
uint64_t childCount = 0;
for (Map::iterator it = m_children->begin(); it != m_children->end(); ++it)
childCount += it->value.count();
return childCount;
}
private:
void dumpInternal(unsigned indent)
{
if (!m_children)
return;
// Copy pointers to all children into a vector, and sort the vector by sample count.
Vector<MapEntry*> entries;
for (Map::iterator it = m_children->begin(); it != m_children->end(); ++it)
entries.append(&*it);
qsort(entries.begin(), entries.size(), sizeof(MapEntry*), compareEntries);
// Iterate over the children in sample-frequency order.
for (size_t e = 0; e < entries.size(); ++e) {
MapEntry* entry = entries[e];
// Print the number of samples, the name of this node, and the number of samples that are stack-top
// in this node (samples directly within this node, excluding samples in children.
for (unsigned i = 0; i < indent; ++i)
dataLogF(" ");
dataLogF("% 8lld: %s (%lld stack top)\n",
static_cast<long long>(entry->value.count()),
entry->key.utf8().data(),
static_cast<long long>(entry->value.count() - entry->value.childCount()));
// Recursively dump the child nodes.
entry->value.dumpInternal(indent + 1);
}
}
static int compareEntries(const void* a, const void* b)
{
uint64_t da = (*static_cast<MapEntry* const *>(a))->value.count();
uint64_t db = (*static_cast<MapEntry* const *>(b))->value.count();
return (da < db) - (da > db);
}
uint64_t m_count;
Map* m_children;
};
}
#endif // ProfileTreeNode_h