LLVM: lib/ExecutionEngine/OProfileJIT/OProfileJITEventListener.cpp Source File (original) (raw)
1
2
3
4
5
6
7
8
9
10
11
12
13
16#include "llvm/Config/config.h"
28#include <dirent.h>
29#include <fcntl.h>
30
31using namespace llvm;
33
34#define DEBUG_TYPE "oprofile-jit-event-listener"
35
36namespace {
37
39 std::unique_ptr Wrapper;
40
42 std::map<ObjectKey, OwningBinary> DebugObjects;
43
44public:
45 OProfileJITEventListener(std::unique_ptr LibraryWrapper)
46 : Wrapper(std::move(LibraryWrapper)) {
48 }
49
50 ~OProfileJITEventListener();
51
52 void notifyObjectLoaded(ObjectKey Key, const ObjectFile &Obj,
54
55 void notifyFreeingObject(ObjectKey Key) override;
56};
57
58void OProfileJITEventListener::initialize() {
59 if (->op_open_agent()) {
61 LLVM_DEBUG(dbgs() << "Failed to connect to OProfile agent: " << err_str
62 << "\n");
63 } else {
64 LLVM_DEBUG(dbgs() << "Connected to OProfile agent.\n");
65 }
66}
67
68OProfileJITEventListener::~OProfileJITEventListener() {
69 if (Wrapper->isAgentAvailable()) {
70 if (Wrapper->op_close_agent() == -1) {
72 LLVM_DEBUG(dbgs() << "Failed to disconnect from OProfile agent: "
73 << err_str << "\n");
74 } else {
75 LLVM_DEBUG(dbgs() << "Disconnected from OProfile agent.\n");
76 }
77 }
78}
79
80void OProfileJITEventListener::notifyObjectLoaded(
83 if (->isAgentAvailable()) {
84 return;
85 }
86
90
91
92 for (const std::pair<SymbolRef, uint64_t> &P : computeSymbolSizes(DebugObj)) {
95 continue;
96
98 if (!NameOrErr)
99 continue;
102 if (!AddrOrErr)
103 continue;
106
107 if (Wrapper->op_write_native_code(Name.data(), Addr, (void *)Addr, Size) ==
108 -1) {
109 LLVM_DEBUG(dbgs() << "Failed to tell OProfile about native function "
110 << Name << " at [" << (void *)Addr << "-"
111 << ((char *)Addr + Size) << "]\n");
112 continue;
113 }
114
116 size_t i = 0;
117 size_t num_entries = Lines.size();
118 struct debug_line_info *debug_line;
119 debug_line = (struct debug_line_info *)calloc(
120 num_entries, sizeof(struct debug_line_info));
121
122 for (auto& It : Lines) {
123 debug_line[i].vma = (unsigned long)It.first;
124 debug_line[i].lineno = It.second.Line;
125 debug_line[i].filename =
126 const_cast<char *>(Lines.front().second.FileName.c_str());
127 ++i;
128 }
129
130 if (Wrapper->op_write_debug_line_info((void *)Addr, num_entries,
131 debug_line) == -1) {
132 LLVM_DEBUG(dbgs() << "Failed to tell OProfiler about debug object at ["
133 << (void *)Addr << "-" << ((char *)Addr + Size)
134 << "]\n");
135 continue;
136 }
137 }
138
139 DebugObjects[Key] = std::move(DebugObjOwner);
140}
141
142void OProfileJITEventListener::notifyFreeingObject(ObjectKey Key) {
143 if (Wrapper->isAgentAvailable()) {
144
145
146
147 if (DebugObjects.find(Key) == DebugObjects.end())
148 return;
149
150 const ObjectFile &DebugObj = *DebugObjects[Key].getBinary();
151
152
158 if (!AddrOrErr)
159 continue;
161
162 if (Wrapper->op_unload_native_code(Addr) == -1) {
165 << "Failed to tell OProfile about unload of native function at "
166 << (void *)Addr << "\n");
167 continue;
168 }
169 }
170 }
171 }
172
173 DebugObjects.erase(Key);
174}
175
176}
177
178namespace llvm {
180 return new OProfileJITEventListener(std::make_unique());
181}
182
183}
184
amdgpu aa AMDGPU Address space based Alias Analysis Wrapper
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T, const llvm::StringTable &StandardNames, VectorLibrary VecLib)
Initialize the set of available library functions based on the specified target triple.
static std::unique_ptr< DWARFContext > create(const object::ObjectFile &Obj, ProcessDebugRelocations RelocAction=ProcessDebugRelocations::Process, const LoadedObjectInfo *L=nullptr, std::string DWPName="", std::function< void(Error)> RecoverableErrorHandler=WithColor::defaultErrorHandler, std::function< void(Error)> WarningHandler=WithColor::defaultWarningHandler, bool ThreadSafe=false)
Tagged union holding either a T or a Error.
JITEventListener - Abstract interface for use by the JIT to notify clients about significant events d...
static JITEventListener * createOProfileJITEventListener()
Information about the loaded object.
StringRef - Represent a constant reference to a string, i.e.
This class is the base class for all object file types.
This is a value type class that represents a single symbol in the list of symbols in the object file.
Expected< SymbolRef::Type > getType() const
Expected< StringRef > getName() const
Expected< uint64_t > getAddress() const
Returns the symbol virtual address (i.e.
virtual basic_symbol_iterator symbol_begin() const =0
virtual basic_symbol_iterator symbol_end() const =0
LLVM_C_ABI LLVMJITEventListenerRef LLVMCreateOProfileJITEventListener(void)
struct LLVMOpaqueJITEventListener * LLVMJITEventListenerRef
LLVM_ABI std::vector< std::pair< SymbolRef, uint64_t > > computeSymbolSizes(const ObjectFile &O)
LLVM_ABI std::string StrError()
Returns a string representation of the errno value, using whatever thread-safe variant of strerror() ...
This is an optimization pass for GlobalISel generic memory operations.
SmallVector< std::pair< uint64_t, DILineInfo >, 16 > DILineInfoTable
LLVM_ABI raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
LLVM_ATTRIBUTE_VISIBILITY_DEFAULT AnalysisKey InnerAnalysisManagerProxy< AnalysisManagerT, IRUnitT, ExtraArgTs... >::Key
LLVMAttributeRef wrap(Attribute Attr)