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  * Authors: Nathan Binkert
  29  */
  30
  31 #ifndef __CPU_PROFILE_HH__
  32 #define __CPU_PROFILE_HH__
  33
  34 #include <map>
  35
  36 #include "arch/stacktrace.hh"
  37 #include "base/types.hh"
  38 #include "config/the_isa.hh"
  39 #include "cpu/static_inst.hh"
  40
  41 class ThreadContext;
  42
  43 class ProfileNode
  44 {
  45   private:
  46     friend class FunctionProfile;
  47
  48     typedef std::map<Addr, ProfileNode *> ChildList;
  49     ChildList children;
  50
  51   public:
  52     Counter count;
  53
  54   public:
  55     ProfileNode();
  56
  57     void dump(const std::string &symbol, uint64_t id,
  58               const SymbolTable *symtab, std::ostream &os) const;
  59     void clear();
  60 };
  61
  62 class Callback;
  63 class FunctionProfile
  64 {
  65   private:
  66     Callback *reset;
  67     const SymbolTable *symtab;
  68     ProfileNode top;
  69     std::map<Addr, Counter> pc_count;
  70     TheISA::StackTrace trace;
  71
  72   public:
  73     FunctionProfile(const SymbolTable *symtab);
  74     ~FunctionProfile();
  75
  76     ProfileNode *consume(ThreadContext *tc, const StaticInstPtr &inst);
  77     ProfileNode *consume(const std::vector<Addr> &stack);
  78     void clear();
  79     void dump(ThreadContext *tc, std::ostream &out) const;
  80     void sample(ProfileNode *node, Addr pc);
  81 };
  82
  83 inline ProfileNode *
  84 FunctionProfile::consume(ThreadContext *tc, const StaticInstPtr &inst)
  85 {
  86     if (!trace.trace(tc, inst))
  87         return NULL;
  88     trace.dprintf();
  89     return consume(trace.getstack());
  90 }
  91
  92 #endif // __CPU_PROFILE_HH__