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//===------- JITLoaderVTune.cpp - Register profiler objects -----*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Register objects for access by profilers via the VTune JIT interface.
//===----------------------------------------------------------------------===//
#include "llvm/ExecutionEngine/Orc/TargetProcess/JITLoaderVTune.h"
#include "llvm/ExecutionEngine/Orc/Shared/VTuneSharedStructs.h"
#if LLVM_USE_INTEL_JITEVENTS
#include "IntelJITEventsWrapper.h"
#include "ittnotify.h"
#include <map>
using namespace llvm;
using namespace llvm::orc;
namespace {
class JITEventWrapper {
public:
static std::unique_ptr<IntelJITEventsWrapper> Wrapper;
};
std::unique_ptr<IntelJITEventsWrapper> JITEventWrapper::Wrapper;
} // namespace
static Error registerJITLoaderVTuneRegisterImpl(const VTuneMethodBatch &MB) {
const size_t StringsSize = MB.Strings.size();
for (const auto &MethodInfo : MB.Methods) {
iJIT_Method_Load MethodMessage;
memset(&MethodMessage, 0, sizeof(iJIT_Method_Load));
MethodMessage.method_id = MethodInfo.MethodID;
if (MethodInfo.NameSI != 0 && MethodInfo.NameSI < StringsSize) {
MethodMessage.method_name =
const_cast<char *>(MB.Strings.at(MethodInfo.NameSI).data());
} else {
MethodMessage.method_name = NULL;
}
if (MethodInfo.ClassFileSI != 0 && MethodInfo.ClassFileSI < StringsSize) {
MethodMessage.class_file_name =
const_cast<char *>(MB.Strings.at(MethodInfo.ClassFileSI).data());
} else {
MethodMessage.class_file_name = NULL;
}
if (MethodInfo.SourceFileSI != 0 && MethodInfo.SourceFileSI < StringsSize) {
MethodMessage.source_file_name =
const_cast<char *>(MB.Strings.at(MethodInfo.SourceFileSI).data());
} else {
MethodMessage.source_file_name = NULL;
}
MethodMessage.method_load_address = MethodInfo.LoadAddr.toPtr<void *>();
MethodMessage.method_size = MethodInfo.LoadSize;
MethodMessage.class_id = 0;
MethodMessage.user_data = NULL;
MethodMessage.user_data_size = 0;
MethodMessage.env = iJDE_JittingAPI;
std::vector<LineNumberInfo> LineInfo;
for (const auto &LInfo : MethodInfo.LineTable) {
LineInfo.push_back(LineNumberInfo{LInfo.first, LInfo.second});
}
if (LineInfo.size() == 0) {
MethodMessage.line_number_size = 0;
MethodMessage.line_number_table = 0;
} else {
MethodMessage.line_number_size = LineInfo.size();
MethodMessage.line_number_table = &*LineInfo.begin();
}
JITEventWrapper::Wrapper->iJIT_NotifyEvent(
iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED, &MethodMessage);
}
return Error::success();
}
static void registerJITLoaderVTuneUnregisterImpl(
const std::vector<std::pair<uint64_t, uint64_t>> &UM) {
for (auto &Method : UM) {
JITEventWrapper::Wrapper->iJIT_NotifyEvent(
iJVM_EVENT_TYPE_METHOD_UNLOAD_START,
const_cast<uint64_t *>(&Method.first));
}
}
extern "C" llvm::orc::shared::CWrapperFunctionResult
llvm_orc_registerVTuneImpl(const char *Data, uint64_t Size) {
using namespace orc::shared;
if (!JITEventWrapper::Wrapper)
JITEventWrapper::Wrapper.reset(new IntelJITEventsWrapper);
return WrapperFunction<SPSError(SPSVTuneMethodBatch)>::handle(
Data, Size, registerJITLoaderVTuneRegisterImpl)
.release();
}
extern "C" llvm::orc::shared::CWrapperFunctionResult
llvm_orc_unregisterVTuneImpl(const char *Data, uint64_t Size) {
using namespace orc::shared;
return WrapperFunction<void(SPSVTuneUnloadedMethodIDs)>::handle(
Data, Size, registerJITLoaderVTuneUnregisterImpl)
.release();
}
// For Testing: following code comes from llvm-jitlistener.cpp in llvm tools
namespace {
using SourceLocations = std::vector<std::pair<std::string, unsigned int>>;
using NativeCodeMap = std::map<uint64_t, SourceLocations>;
NativeCodeMap ReportedDebugFuncs;
} // namespace
static int NotifyEvent(iJIT_JVM_EVENT EventType, void *EventSpecificData) {
switch (EventType) {
case iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED: {
if (!EventSpecificData) {
errs() << "Error: The JIT event listener did not provide a event data.";
return -1;
}
iJIT_Method_Load *msg = static_cast<iJIT_Method_Load *>(EventSpecificData);
ReportedDebugFuncs[msg->method_id];
outs() << "Method load [" << msg->method_id << "]: " << msg->method_name
<< ", Size = " << msg->method_size << "\n";
for (unsigned int i = 0; i < msg->line_number_size; ++i) {
if (!msg->line_number_table) {
errs() << "A function with a non-zero line count had no line table.";
return -1;
}
std::pair<std::string, unsigned int> loc(
std::string(msg->source_file_name),
msg->line_number_table[i].LineNumber);
ReportedDebugFuncs[msg->method_id].push_back(loc);
outs() << " Line info @ " << msg->line_number_table[i].Offset << ": "
<< msg->source_file_name << ", line "
<< msg->line_number_table[i].LineNumber << "\n";
}
outs() << "\n";
} break;
case iJVM_EVENT_TYPE_METHOD_UNLOAD_START: {
if (!EventSpecificData) {
errs() << "Error: The JIT event listener did not provide a event data.";
return -1;
}
unsigned int UnloadId =
*reinterpret_cast<unsigned int *>(EventSpecificData);
assert(1 == ReportedDebugFuncs.erase(UnloadId));
outs() << "Method unload [" << UnloadId << "]\n";
} break;
default:
break;
}
return 0;
}
static iJIT_IsProfilingActiveFlags IsProfilingActive(void) {
// for testing, pretend we have an Intel Parallel Amplifier XE 2011
// instance attached
return iJIT_SAMPLING_ON;
}
static unsigned int GetNewMethodID(void) {
static unsigned int id = 0;
return ++id;
}
extern "C" llvm::orc::shared::CWrapperFunctionResult
llvm_orc_test_registerVTuneImpl(const char *Data, uint64_t Size) {
using namespace orc::shared;
JITEventWrapper::Wrapper.reset(new IntelJITEventsWrapper(
NotifyEvent, NULL, NULL, IsProfilingActive, 0, 0, GetNewMethodID));
return WrapperFunction<SPSError(SPSVTuneMethodBatch)>::handle(
Data, Size, registerJITLoaderVTuneRegisterImpl)
.release();
}
#else
using namespace llvm;
using namespace llvm::orc;
static Error unsupportedBatch(const VTuneMethodBatch &MB) {
return llvm::make_error<StringError>("unsupported for Intel VTune",
inconvertibleErrorCode());
}
static void unsuppported(const std::vector<std::pair<uint64_t, uint64_t>> &UM) {
}
extern "C" llvm::orc::shared::CWrapperFunctionResult
llvm_orc_registerVTuneImpl(const char *Data, uint64_t Size) {
using namespace orc::shared;
return WrapperFunction<SPSError(SPSVTuneMethodBatch)>::handle(
Data, Size, unsupportedBatch)
.release();
}
extern "C" llvm::orc::shared::CWrapperFunctionResult
llvm_orc_unregisterVTuneImpl(const char *Data, uint64_t Size) {
using namespace orc::shared;
return WrapperFunction<void(SPSVTuneUnloadedMethodIDs)>::handle(Data, Size,
unsuppported)
.release();
}
extern "C" llvm::orc::shared::CWrapperFunctionResult
llvm_orc_test_registerVTuneImpl(const char *Data, uint64_t Size) {
using namespace orc::shared;
return WrapperFunction<SPSError(SPSVTuneMethodBatch)>::handle(
Data, Size, unsupportedBatch)
.release();
}
#endif
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