cpu/profile.hh: Add a placeholder for a reset callback --HG-- extra : convert_revision : 7fa13e5d04daf1cf93eb35c8fdaf67a40ce3ef73
154 lines
4.5 KiB
C++
154 lines
4.5 KiB
C++
/*
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* Copyright (c) 2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <string>
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#include "base/bitfield.hh"
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#include "base/callback.hh"
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#include "base/statistics.hh"
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#include "base/trace.hh"
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#include "cpu/base.hh"
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#include "cpu/exec_context.hh"
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#include "cpu/profile.hh"
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using namespace std;
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ProfileNode::ProfileNode()
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: count(0)
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{ }
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void
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ProfileNode::dump(const string &symbol, uint64_t id, const SymbolTable *symtab,
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ostream &os) const
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{
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ccprintf(os, "%#x %s %d ", id, symbol, count);
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ChildList::const_iterator i, end = children.end();
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for (i = children.begin(); i != end; ++i) {
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const ProfileNode *node = i->second;
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ccprintf(os, "%#x ", (intptr_t)node);
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}
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ccprintf(os, "\n");
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for (i = children.begin(); i != end; ++i) {
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Addr addr = i->first;
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string symbol;
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if (addr == 1)
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symbol = "user";
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else if (addr == 2)
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symbol = "console";
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else if (addr == 3)
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symbol = "unknown";
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else if (!symtab->findSymbol(addr, symbol))
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panic("could not find symbol for address %#x\n", addr);
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const ProfileNode *node = i->second;
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node->dump(symbol, (intptr_t)node, symtab, os);
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}
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}
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void
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ProfileNode::clear()
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{
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count = 0;
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ChildList::iterator i, end = children.end();
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for (i = children.begin(); i != end; ++i)
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i->second->clear();
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}
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FunctionProfile::FunctionProfile(const SymbolTable *_symtab)
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: reset(0), symtab(_symtab)
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{
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reset = new MakeCallback<FunctionProfile, &FunctionProfile::clear>(this);
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Stats::registerResetCallback(reset);
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}
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FunctionProfile::~FunctionProfile()
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{
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if (reset)
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delete reset;
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}
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ProfileNode *
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FunctionProfile::consume(const vector<Addr> &stack)
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{
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ProfileNode *current = ⊤
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for (int i = 0, size = stack.size(); i < size; ++i) {
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ProfileNode *&ptr = current->children[stack[size - i - 1]];
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if (ptr == NULL)
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ptr = new ProfileNode;
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current = ptr;
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}
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return current;
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}
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void
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FunctionProfile::clear()
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{
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top.clear();
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pc_count.clear();
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}
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void
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FunctionProfile::dump(ExecContext *xc, ostream &os) const
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{
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ccprintf(os, ">>>PC data\n");
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map<Addr, Counter>::const_iterator i, end = pc_count.end();
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for (i = pc_count.begin(); i != end; ++i) {
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Addr pc = i->first;
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Counter count = i->second;
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std::string symbol;
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if (pc == 1)
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ccprintf(os, "user %d\n", count);
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else if (symtab->findSymbol(pc, symbol) && !symbol.empty())
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ccprintf(os, "%s %d\n", symbol, count);
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else
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ccprintf(os, "%#x %d\n", pc, count);
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}
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ccprintf(os, ">>>function data\n");
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top.dump("top", 0, symtab, os);
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}
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void
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FunctionProfile::sample(ProfileNode *node, Addr pc)
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{
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node->count++;
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Addr symaddr;
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if (symtab->findNearestAddr(pc, symaddr)) {
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pc_count[symaddr]++;
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} else {
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// record PC even if we don't have a symbol to avoid
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// silently biasing the histogram
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pc_count[pc]++;
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}
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}
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