1 //===-- IntelJITEventListener.cpp - Tell Intel profiler about JITed code --===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines a JITEventListener object to tell Intel(R) VTune(TM)
11 // Amplifier XE 2011 about JITted functions.
13 //===----------------------------------------------------------------------===//
15 #include "llvm/Config/config.h"
16 #include "llvm/ExecutionEngine/JITEventListener.h"
18 #include "llvm/IR/DebugInfo.h"
19 #include "llvm/IR/Function.h"
20 #include "llvm/IR/Metadata.h"
21 #include "llvm/ADT/DenseMap.h"
22 #include "llvm/CodeGen/MachineFunction.h"
23 #include "llvm/DebugInfo/DIContext.h"
24 #include "llvm/Object/ObjectFile.h"
25 #include "llvm/Support/Debug.h"
26 #include "llvm/Support/raw_ostream.h"
27 #include "llvm/Support/Errno.h"
28 #include "llvm/IR/ValueHandle.h"
29 #include "EventListenerCommon.h"
30 #include "IntelJITEventsWrapper.h"
33 using namespace llvm::jitprofiling;
34 using namespace llvm::object;
36 #define DEBUG_TYPE "amplifier-jit-event-listener"
40 class IntelJITEventListener : public JITEventListener {
41 typedef DenseMap<void*, unsigned int> MethodIDMap;
43 std::unique_ptr<IntelJITEventsWrapper> Wrapper;
44 MethodIDMap MethodIDs;
45 FilenameCache Filenames;
47 typedef SmallVector<const void *, 64> MethodAddressVector;
48 typedef DenseMap<const void *, MethodAddressVector> ObjectMap;
50 ObjectMap LoadedObjectMap;
51 std::map<const char*, OwningBinary<ObjectFile>> DebugObjects;
54 IntelJITEventListener(IntelJITEventsWrapper* libraryWrapper) {
55 Wrapper.reset(libraryWrapper);
58 ~IntelJITEventListener() {
61 void NotifyObjectEmitted(const ObjectFile &Obj,
62 const RuntimeDyld::LoadedObjectInfo &L) override;
64 void NotifyFreeingObject(const ObjectFile &Obj) override;
67 static LineNumberInfo DILineInfoToIntelJITFormat(uintptr_t StartAddress,
70 LineNumberInfo Result;
72 Result.Offset = Address - StartAddress;
73 Result.LineNumber = Line.Line;
78 static iJIT_Method_Load FunctionDescToIntelJITFormat(
79 IntelJITEventsWrapper& Wrapper,
83 iJIT_Method_Load Result;
84 memset(&Result, 0, sizeof(iJIT_Method_Load));
86 Result.method_id = Wrapper.iJIT_GetNewMethodID();
87 Result.method_name = const_cast<char*>(FnName);
88 Result.method_load_address = reinterpret_cast<void*>(FnStart);
89 Result.method_size = FnSize;
92 Result.class_file_name = NULL;
93 Result.user_data = NULL;
94 Result.user_data_size = 0;
95 Result.env = iJDE_JittingAPI;
100 void IntelJITEventListener::NotifyObjectEmitted(
101 const ObjectFile &Obj,
102 const RuntimeDyld::LoadedObjectInfo &L) {
104 OwningBinary<ObjectFile> DebugObjOwner = L.getObjectForDebug(Obj);
105 const ObjectFile &DebugObj = *DebugObjOwner.getBinary();
107 // Get the address of the object image for use as a unique identifier
108 const void* ObjData = DebugObj.getData().data();
109 DIContext* Context = DIContext::getDWARFContext(DebugObj);
110 MethodAddressVector Functions;
112 // Use symbol info to iterate functions in the object.
113 for (symbol_iterator I = DebugObj.symbol_begin(),
114 E = DebugObj.symbol_end();
117 std::vector<LineNumberInfo> LineInfo;
118 std::string SourceFileName;
120 SymbolRef::Type SymType;
121 if (I->getType(SymType)) continue;
122 if (SymType == SymbolRef::ST_Function) {
126 if (I->getName(Name)) continue;
127 if (I->getAddress(Addr)) continue;
128 if (I->getSize(Size)) continue;
130 // Record this address in a local vector
131 Functions.push_back((void*)Addr);
133 // Build the function loaded notification message
134 iJIT_Method_Load FunctionMessage = FunctionDescToIntelJITFormat(*Wrapper,
139 DILineInfoTable Lines = Context->getLineInfoForAddressRange(Addr, Size);
140 DILineInfoTable::iterator Begin = Lines.begin();
141 DILineInfoTable::iterator End = Lines.end();
142 for (DILineInfoTable::iterator It = Begin; It != End; ++It) {
143 LineInfo.push_back(DILineInfoToIntelJITFormat((uintptr_t)Addr,
147 if (LineInfo.size() == 0) {
148 FunctionMessage.source_file_name = 0;
149 FunctionMessage.line_number_size = 0;
150 FunctionMessage.line_number_table = 0;
152 SourceFileName = Lines.front().second.FileName;
153 FunctionMessage.source_file_name = const_cast<char *>(SourceFileName.c_str());
154 FunctionMessage.line_number_size = LineInfo.size();
155 FunctionMessage.line_number_table = &*LineInfo.begin();
158 FunctionMessage.source_file_name = 0;
159 FunctionMessage.line_number_size = 0;
160 FunctionMessage.line_number_table = 0;
163 Wrapper->iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED,
165 MethodIDs[(void*)Addr] = FunctionMessage.method_id;
169 // To support object unload notification, we need to keep a list of
170 // registered function addresses for each loaded object. We will
171 // use the MethodIDs map to get the registered ID for each function.
172 LoadedObjectMap[ObjData] = Functions;
173 DebugObjects[Obj.getData().data()] = std::move(DebugObjOwner);
176 void IntelJITEventListener::NotifyFreeingObject(const ObjectFile &Obj) {
177 // This object may not have been registered with the listener. If it wasn't,
179 if (DebugObjects.find(Obj.getData().data()) == DebugObjects.end())
182 // Get the address of the object image for use as a unique identifier
183 const ObjectFile &DebugObj = *DebugObjects[Obj.getData().data()].getBinary();
184 const void* ObjData = DebugObj.getData().data();
186 // Get the object's function list from LoadedObjectMap
187 ObjectMap::iterator OI = LoadedObjectMap.find(ObjData);
188 if (OI == LoadedObjectMap.end())
190 MethodAddressVector& Functions = OI->second;
192 // Walk the function list, unregistering each function
193 for (MethodAddressVector::iterator FI = Functions.begin(),
194 FE = Functions.end();
197 void* FnStart = const_cast<void*>(*FI);
198 MethodIDMap::iterator MI = MethodIDs.find(FnStart);
199 if (MI != MethodIDs.end()) {
200 Wrapper->iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_UNLOAD_START,
206 // Erase the object from LoadedObjectMap
207 LoadedObjectMap.erase(OI);
208 DebugObjects.erase(Obj.getData().data());
211 } // anonymous namespace.
214 JITEventListener *JITEventListener::createIntelJITEventListener() {
215 return new IntelJITEventListener(new IntelJITEventsWrapper);
219 JITEventListener *JITEventListener::createIntelJITEventListener(
220 IntelJITEventsWrapper* TestImpl) {
221 return new IntelJITEventListener(TestImpl);