src/cpu/profile.hh

   1 /*
   2  * Copyright (c) 2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * 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  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef __CPU_PROFILE_HH__
  30 #define __CPU_PROFILE_HH__
  31
  32 #include <map>
  33
  34 #include "arch/stacktrace.hh"
  35 #include "base/types.hh"
  36 #include "config/the_isa.hh"
  37 #include "cpu/static_inst.hh"
  38
  39 class ThreadContext;
  40
  41 class ProfileNode
  42 {
  43   private:
  44     friend class FunctionProfile;
  45
  46     typedef std::map<Addr, ProfileNode *> ChildList;
  47     ChildList children;
  48
  49   public:
  50     Counter count;
  51
  52   public:
  53     ProfileNode();
  54
  55     void dump(const std::string &symbol, uint64_t id,
  56               const Loader::SymbolTable &symtab, std::ostream &os) const;
  57     void clear();
  58 };
  59
  60 class Callback;
  61 class FunctionProfile
  62 {
  63   private:
  64     Callback *reset;
  65     const Loader::SymbolTable &symtab;
  66     ProfileNode top;
  67     std::map<Addr, Counter> pc_count;
  68     TheISA::StackTrace trace;
  69
  70   public:
  71     FunctionProfile(const Loader::SymbolTable &symtab);
  72     ~FunctionProfile();
  73
  74     ProfileNode *consume(ThreadContext *tc, const StaticInstPtr &inst);
  75     ProfileNode *consume(const std::vector<Addr> &stack);
  76     void clear();
  77     void dump(ThreadContext *tc, std::ostream &out) const;
  78     void sample(ProfileNode *node, Addr pc);
  79 };
  80
  81 inline ProfileNode *
  82 FunctionProfile::consume(ThreadContext *tc, const StaticInstPtr &inst)
  83 {
  84     if (!trace.trace(tc, inst))
  85         return NULL;
  86     trace.dprintf();
  87     return consume(trace.getstack());
  88 }
  89
  90 #endif // __CPU_PROFILE_HH__