src/profiler.h

   1 /*
   2 * Copyright (C) 2007 Benjamin C Meyer
   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 met:
   7 *     * 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 *     * The name of the contributors may not be used to endorse or promote products
  13 *       derived from this software without specific prior written permission.
  14 *
  15 * THIS SOFTWARE IS PROVIDED BY <copyright holder> ``AS IS'' AND ANY
  16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18 * DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
  19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  22 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  24 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25 */
  26
  27 #ifndef PROFILER_H
  28 #define PROFILER_H
  29
  30 #include <QtScript>
  31
  32 class Action {
  33 public:
  34     Action(int lineNumber = 0) : line(lineNumber), cost(0), called(0), callObject(-1){}
  35     inline bool operator <(const Action &other) const {
  36         if (other.line == line)
  37             return other.callFunction < callFunction;
  38         return other.line < line;
  39     }
  40
  41     int line;
  42     uint cost;
  43
  44     uint called;
  45     uint callObject;
  46     QString callFunction;
  47     uint callFunctionLine;
  48 };
  49
  50 class Function {
  51 public:
  52     Function(int line = -1) : startLine(line){}
  53     inline bool operator <(const Function &other) const {
  54         return other.startLine < startLine;
  55     }
  56     QString functionName;
  57     int startLine;
  58     QList<Action> actions;
  59 };
  60
  61 class Object {
  62 public:
  63     QStringList code;
  64     QString fileName;
  65     QList<Function> functions;
  66 };
  67
  68 class Profiler : public QScriptEngineAgent
  69 {
  70 public:
  71     Profiler(QScriptEngine *engine);
  72     ~Profiler();
  73
  74     void positionChange(qint64 scriptId, int lineNumber, int columnNumber);
  75     void scriptLoad (qint64 id, const QString &program, const QString &fileName, int baseLineNumber);
  76     void functionEntry(qint64 scriptId);
  77     void functionExit(qint64 scriptId, const QScriptValue &returnValue);
  78
  79 private:
  80     Function *determineCurrentFunction(qint64 scriptId);
  81     Function *currentFunctionCache;
  82     int scriptIdCache;
  83     void positionDone();
  84     QString functionName(QScriptContext *ctx, qint64 scriptId) const;
  85
  86     QStack<int> currentFunctionLine;
  87     QStack<int> currentLine;
  88     QStack<int> currentScriptId;
  89
  90     bool first;
  91
  92     QStack<Action *>currentFunction;
  93     QHash<int, Object> objects;
  94     suseconds_t instTime;
  95     suseconds_t funTime;
  96 };
  97
  98 #endif