111 lines
4.0 KiB
C
111 lines
4.0 KiB
C
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//===-- IntelJITEventsWrapper.h - Intel JIT Events API Wrapper --*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a wrapper for the Intel JIT Events API. It allows for the
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// implementation of the jitprofiling library to be swapped with an alternative
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// implementation (for testing). To include this file, you must have the
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// jitprofiling.h header available; it is available in Intel(R) VTune(TM)
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// Amplifier XE 2011.
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//
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//===----------------------------------------------------------------------===//
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#ifndef INTEL_JIT_EVENTS_WRAPPER_H
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#define INTEL_JIT_EVENTS_WRAPPER_H
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#include "jitprofiling.h"
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namespace llvm {
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typedef enum {
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LoadBinaryModule,
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LoadBinarySection,
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UnloadBinaryModule,
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UnloadBinarySection
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} IttEventType;
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class IntelJITEventsWrapper {
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// Function pointer types for testing implementation of Intel jitprofiling
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// library
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typedef int (*NotifyEventPtr)(iJIT_JVM_EVENT, void*);
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typedef int (*IttnotifyInfoPtr)(IttEventType, const char *, unsigned int);
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typedef void (*RegisterCallbackExPtr)(void *, iJIT_ModeChangedEx );
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typedef iJIT_IsProfilingActiveFlags (*IsProfilingActivePtr)(void);
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typedef void (*FinalizeThreadPtr)(void);
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typedef void (*FinalizeProcessPtr)(void);
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typedef unsigned int (*GetNewMethodIDPtr)(void);
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NotifyEventPtr NotifyEventFunc;
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IttnotifyInfoPtr IttnotifyInfoFunc;
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RegisterCallbackExPtr RegisterCallbackExFunc;
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IsProfilingActivePtr IsProfilingActiveFunc;
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GetNewMethodIDPtr GetNewMethodIDFunc;
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public:
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bool isAmplifierRunning() {
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return iJIT_IsProfilingActive() == iJIT_SAMPLING_ON;
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}
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IntelJITEventsWrapper()
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: NotifyEventFunc(::iJIT_NotifyEvent), IttnotifyInfoFunc(0),
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RegisterCallbackExFunc(::iJIT_RegisterCallbackEx),
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IsProfilingActiveFunc(::iJIT_IsProfilingActive),
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GetNewMethodIDFunc(::iJIT_GetNewMethodID) {}
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IntelJITEventsWrapper(NotifyEventPtr NotifyEventImpl,
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IttnotifyInfoPtr IttnotifyInfoImpl,
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RegisterCallbackExPtr RegisterCallbackExImpl,
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IsProfilingActivePtr IsProfilingActiveImpl,
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FinalizeThreadPtr FinalizeThreadImpl,
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FinalizeProcessPtr FinalizeProcessImpl,
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GetNewMethodIDPtr GetNewMethodIDImpl)
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: NotifyEventFunc(NotifyEventImpl), IttnotifyInfoFunc(IttnotifyInfoImpl),
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RegisterCallbackExFunc(RegisterCallbackExImpl),
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IsProfilingActiveFunc(IsProfilingActiveImpl),
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GetNewMethodIDFunc(GetNewMethodIDImpl) {}
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// Sends an event announcing that a function has been emitted
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// return values are event-specific. See Intel documentation for details.
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int iJIT_NotifyEvent(iJIT_JVM_EVENT EventType, void *EventSpecificData) {
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if (!NotifyEventFunc)
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return -1;
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return NotifyEventFunc(EventType, EventSpecificData);
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}
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int iJitIttNotifyInfo(IttEventType EventType, const char *Name,
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unsigned int Size) {
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if (!IttnotifyInfoFunc)
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return -1;
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return IttnotifyInfoFunc(EventType, Name, Size);
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}
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// Registers a callback function to receive notice of profiling state changes
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void iJIT_RegisterCallbackEx(void *UserData,
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iJIT_ModeChangedEx NewModeCallBackFuncEx) {
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if (RegisterCallbackExFunc)
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RegisterCallbackExFunc(UserData, NewModeCallBackFuncEx);
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}
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// Returns the current profiler mode
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iJIT_IsProfilingActiveFlags iJIT_IsProfilingActive(void) {
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if (!IsProfilingActiveFunc)
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return iJIT_NOTHING_RUNNING;
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return IsProfilingActiveFunc();
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}
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// Generates a locally unique method ID for use in code registration
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unsigned int iJIT_GetNewMethodID(void) {
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if (!GetNewMethodIDFunc)
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return -1;
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return GetNewMethodIDFunc();
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}
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};
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} //namespace llvm
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#endif //INTEL_JIT_EVENTS_WRAPPER_H
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