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