annotate lib/ExecutionEngine/IntelJITEvents/IntelJITEventsWrapper.h @ 97:b0dd3743370f

LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Wed, 14 Oct 2015 19:39:58 +0900
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1 //===-- IntelJITEventsWrapper.h - Intel JIT Events API Wrapper --*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file defines a wrapper for the Intel JIT Events API. It allows for the
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11 // implementation of the jitprofiling library to be swapped with an alternative
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12 // implementation (for testing). To include this file, you must have the
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13 // jitprofiling.h header available; it is available in Intel(R) VTune(TM)
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14 // Amplifier XE 2011.
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15 //
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16 //===----------------------------------------------------------------------===//
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17
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18 #ifndef INTEL_JIT_EVENTS_WRAPPER_H
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19 #define INTEL_JIT_EVENTS_WRAPPER_H
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20
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21 #include "jitprofiling.h"
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22
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23 namespace llvm {
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24
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25 class IntelJITEventsWrapper {
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26 // Function pointer types for testing implementation of Intel jitprofiling
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27 // library
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28 typedef int (*NotifyEventPtr)(iJIT_JVM_EVENT, void*);
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29 typedef void (*RegisterCallbackExPtr)(void *, iJIT_ModeChangedEx );
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30 typedef iJIT_IsProfilingActiveFlags (*IsProfilingActivePtr)(void);
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31 typedef void (*FinalizeThreadPtr)(void);
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32 typedef void (*FinalizeProcessPtr)(void);
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33 typedef unsigned int (*GetNewMethodIDPtr)(void);
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34
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35 NotifyEventPtr NotifyEventFunc;
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36 RegisterCallbackExPtr RegisterCallbackExFunc;
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37 IsProfilingActivePtr IsProfilingActiveFunc;
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38 GetNewMethodIDPtr GetNewMethodIDFunc;
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39
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40 public:
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41 bool isAmplifierRunning() {
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42 return iJIT_IsProfilingActive() == iJIT_SAMPLING_ON;
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43 }
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44
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45 IntelJITEventsWrapper()
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46 : NotifyEventFunc(::iJIT_NotifyEvent),
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47 RegisterCallbackExFunc(::iJIT_RegisterCallbackEx),
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48 IsProfilingActiveFunc(::iJIT_IsProfilingActive),
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49 GetNewMethodIDFunc(::iJIT_GetNewMethodID) {
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50 }
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51
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52 IntelJITEventsWrapper(NotifyEventPtr NotifyEventImpl,
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53 RegisterCallbackExPtr RegisterCallbackExImpl,
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54 IsProfilingActivePtr IsProfilingActiveImpl,
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55 FinalizeThreadPtr FinalizeThreadImpl,
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56 FinalizeProcessPtr FinalizeProcessImpl,
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57 GetNewMethodIDPtr GetNewMethodIDImpl)
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58 : NotifyEventFunc(NotifyEventImpl),
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59 RegisterCallbackExFunc(RegisterCallbackExImpl),
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60 IsProfilingActiveFunc(IsProfilingActiveImpl),
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61 GetNewMethodIDFunc(GetNewMethodIDImpl) {
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62 }
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63
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64 // Sends an event announcing that a function has been emitted
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65 // return values are event-specific. See Intel documentation for details.
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66 int iJIT_NotifyEvent(iJIT_JVM_EVENT EventType, void *EventSpecificData) {
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67 if (!NotifyEventFunc)
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68 return -1;
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69 return NotifyEventFunc(EventType, EventSpecificData);
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70 }
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71
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72 // Registers a callback function to receive notice of profiling state changes
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73 void iJIT_RegisterCallbackEx(void *UserData,
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74 iJIT_ModeChangedEx NewModeCallBackFuncEx) {
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75 if (RegisterCallbackExFunc)
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76 RegisterCallbackExFunc(UserData, NewModeCallBackFuncEx);
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77 }
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78
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79 // Returns the current profiler mode
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80 iJIT_IsProfilingActiveFlags iJIT_IsProfilingActive(void) {
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81 if (!IsProfilingActiveFunc)
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82 return iJIT_NOTHING_RUNNING;
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83 return IsProfilingActiveFunc();
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84 }
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85
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86 // Generates a locally unique method ID for use in code registration
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87 unsigned int iJIT_GetNewMethodID(void) {
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88 if (!GetNewMethodIDFunc)
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89 return -1;
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90 return GetNewMethodIDFunc();
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91 }
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92 };
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93
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94 } //namespace llvm
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95
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96 #endif //INTEL_JIT_EVENTS_WRAPPER_H