mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-12-15 15:48:38 +00:00
23da8b5fb5
Currently running the xray tools generates a number of errors: $ ./bin/llvm-xray : for the -k option: cl::alias must not have cl::sub(), aliased option's cl::sub() will be used! : for the -d option: cl::alias must not have cl::sub(), aliased option's cl::sub() will be used! : for the -o option: cl::alias must not have cl::sub(), aliased option's cl::sub() will be used! : for the -f option: cl::alias must not have cl::sub(), aliased option's cl::sub() will be used! : for the -s option: cl::alias must not have cl::sub(), aliased option's cl::sub() will be used! : for the -r option: cl::alias must not have cl::sub(), aliased option's cl::sub() will be used! : for the -p option: cl::alias must not have cl::sub(), aliased option's cl::sub() will be used! : for the -m option: cl::alias must not have cl::sub(), aliased option's cl::sub() will be used! <snip> Patch by Ryan Mansfield. Differential Revision: https://reviews.llvm.org/D69386
416 lines
16 KiB
C++
416 lines
16 KiB
C++
//===- xray-converter.cpp: XRay Trace Conversion --------------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Implements the trace conversion functions.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
#include "xray-converter.h"
|
|
|
|
#include "trie-node.h"
|
|
#include "xray-registry.h"
|
|
#include "llvm/DebugInfo/Symbolize/Symbolize.h"
|
|
#include "llvm/Support/EndianStream.h"
|
|
#include "llvm/Support/FileSystem.h"
|
|
#include "llvm/Support/FormatVariadic.h"
|
|
#include "llvm/Support/ScopedPrinter.h"
|
|
#include "llvm/Support/YAMLTraits.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include "llvm/XRay/InstrumentationMap.h"
|
|
#include "llvm/XRay/Trace.h"
|
|
#include "llvm/XRay/YAMLXRayRecord.h"
|
|
|
|
using namespace llvm;
|
|
using namespace xray;
|
|
|
|
// llvm-xray convert
|
|
// ----------------------------------------------------------------------------
|
|
static cl::SubCommand Convert("convert", "Trace Format Conversion");
|
|
static cl::opt<std::string> ConvertInput(cl::Positional,
|
|
cl::desc("<xray log file>"),
|
|
cl::Required, cl::sub(Convert));
|
|
enum class ConvertFormats { BINARY, YAML, CHROME_TRACE_EVENT };
|
|
static cl::opt<ConvertFormats> ConvertOutputFormat(
|
|
"output-format", cl::desc("output format"),
|
|
cl::values(clEnumValN(ConvertFormats::BINARY, "raw", "output in binary"),
|
|
clEnumValN(ConvertFormats::YAML, "yaml", "output in yaml"),
|
|
clEnumValN(ConvertFormats::CHROME_TRACE_EVENT, "trace_event",
|
|
"Output in chrome's trace event format. "
|
|
"May be visualized with the Catapult trace viewer.")),
|
|
cl::sub(Convert));
|
|
static cl::alias ConvertOutputFormat2("f", cl::aliasopt(ConvertOutputFormat),
|
|
cl::desc("Alias for -output-format"));
|
|
static cl::opt<std::string>
|
|
ConvertOutput("output", cl::value_desc("output file"), cl::init("-"),
|
|
cl::desc("output file; use '-' for stdout"),
|
|
cl::sub(Convert));
|
|
static cl::alias ConvertOutput2("o", cl::aliasopt(ConvertOutput),
|
|
cl::desc("Alias for -output"));
|
|
|
|
static cl::opt<bool>
|
|
ConvertSymbolize("symbolize",
|
|
cl::desc("symbolize function ids from the input log"),
|
|
cl::init(false), cl::sub(Convert));
|
|
static cl::alias ConvertSymbolize2("y", cl::aliasopt(ConvertSymbolize),
|
|
cl::desc("Alias for -symbolize"));
|
|
|
|
static cl::opt<std::string>
|
|
ConvertInstrMap("instr_map",
|
|
cl::desc("binary with the instrumentation map, or "
|
|
"a separate instrumentation map"),
|
|
cl::value_desc("binary with xray_instr_map"),
|
|
cl::sub(Convert), cl::init(""));
|
|
static cl::alias ConvertInstrMap2("m", cl::aliasopt(ConvertInstrMap),
|
|
cl::desc("Alias for -instr_map"));
|
|
static cl::opt<bool> ConvertSortInput(
|
|
"sort",
|
|
cl::desc("determines whether to sort input log records by timestamp"),
|
|
cl::sub(Convert), cl::init(true));
|
|
static cl::alias ConvertSortInput2("s", cl::aliasopt(ConvertSortInput),
|
|
cl::desc("Alias for -sort"));
|
|
|
|
using llvm::yaml::Output;
|
|
|
|
void TraceConverter::exportAsYAML(const Trace &Records, raw_ostream &OS) {
|
|
YAMLXRayTrace Trace;
|
|
const auto &FH = Records.getFileHeader();
|
|
Trace.Header = {FH.Version, FH.Type, FH.ConstantTSC, FH.NonstopTSC,
|
|
FH.CycleFrequency};
|
|
Trace.Records.reserve(Records.size());
|
|
for (const auto &R : Records) {
|
|
Trace.Records.push_back({R.RecordType, R.CPU, R.Type, R.FuncId,
|
|
Symbolize ? FuncIdHelper.SymbolOrNumber(R.FuncId)
|
|
: llvm::to_string(R.FuncId),
|
|
R.TSC, R.TId, R.PId, R.CallArgs, R.Data});
|
|
}
|
|
Output Out(OS, nullptr, 0);
|
|
Out.setWriteDefaultValues(false);
|
|
Out << Trace;
|
|
}
|
|
|
|
void TraceConverter::exportAsRAWv1(const Trace &Records, raw_ostream &OS) {
|
|
// First write out the file header, in the correct endian-appropriate format
|
|
// (XRay assumes currently little endian).
|
|
support::endian::Writer Writer(OS, support::endianness::little);
|
|
const auto &FH = Records.getFileHeader();
|
|
Writer.write(FH.Version);
|
|
Writer.write(FH.Type);
|
|
uint32_t Bitfield{0};
|
|
if (FH.ConstantTSC)
|
|
Bitfield |= 1uL;
|
|
if (FH.NonstopTSC)
|
|
Bitfield |= 1uL << 1;
|
|
Writer.write(Bitfield);
|
|
Writer.write(FH.CycleFrequency);
|
|
|
|
// There's 16 bytes of padding at the end of the file header.
|
|
static constexpr uint32_t Padding4B = 0;
|
|
Writer.write(Padding4B);
|
|
Writer.write(Padding4B);
|
|
Writer.write(Padding4B);
|
|
Writer.write(Padding4B);
|
|
|
|
// Then write out the rest of the records, still in an endian-appropriate
|
|
// format.
|
|
for (const auto &R : Records) {
|
|
switch (R.Type) {
|
|
case RecordTypes::ENTER:
|
|
case RecordTypes::ENTER_ARG:
|
|
Writer.write(R.RecordType);
|
|
Writer.write(static_cast<uint8_t>(R.CPU));
|
|
Writer.write(uint8_t{0});
|
|
break;
|
|
case RecordTypes::EXIT:
|
|
Writer.write(R.RecordType);
|
|
Writer.write(static_cast<uint8_t>(R.CPU));
|
|
Writer.write(uint8_t{1});
|
|
break;
|
|
case RecordTypes::TAIL_EXIT:
|
|
Writer.write(R.RecordType);
|
|
Writer.write(static_cast<uint8_t>(R.CPU));
|
|
Writer.write(uint8_t{2});
|
|
break;
|
|
case RecordTypes::CUSTOM_EVENT:
|
|
case RecordTypes::TYPED_EVENT:
|
|
// Skip custom and typed event records for v1 logs.
|
|
continue;
|
|
}
|
|
Writer.write(R.FuncId);
|
|
Writer.write(R.TSC);
|
|
Writer.write(R.TId);
|
|
|
|
if (FH.Version >= 3)
|
|
Writer.write(R.PId);
|
|
else
|
|
Writer.write(Padding4B);
|
|
|
|
Writer.write(Padding4B);
|
|
Writer.write(Padding4B);
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
|
|
// A structure that allows building a dictionary of stack ids for the Chrome
|
|
// trace event format.
|
|
struct StackIdData {
|
|
// Each Stack of function calls has a unique ID.
|
|
unsigned id;
|
|
|
|
// Bookkeeping so that IDs can be maintained uniquely across threads.
|
|
// Traversal keeps sibling pointers to other threads stacks. This is helpful
|
|
// to determine when a thread encounters a new stack and should assign a new
|
|
// unique ID.
|
|
SmallVector<TrieNode<StackIdData> *, 4> siblings;
|
|
};
|
|
|
|
using StackTrieNode = TrieNode<StackIdData>;
|
|
|
|
// A helper function to find the sibling nodes for an encountered function in a
|
|
// thread of execution. Relies on the invariant that each time a new node is
|
|
// traversed in a thread, sibling bidirectional pointers are maintained.
|
|
SmallVector<StackTrieNode *, 4>
|
|
findSiblings(StackTrieNode *parent, int32_t FnId, uint32_t TId,
|
|
const DenseMap<uint32_t, SmallVector<StackTrieNode *, 4>>
|
|
&StackRootsByThreadId) {
|
|
|
|
SmallVector<StackTrieNode *, 4> Siblings{};
|
|
|
|
if (parent == nullptr) {
|
|
for (auto map_iter : StackRootsByThreadId) {
|
|
// Only look for siblings in other threads.
|
|
if (map_iter.first != TId)
|
|
for (auto node_iter : map_iter.second) {
|
|
if (node_iter->FuncId == FnId)
|
|
Siblings.push_back(node_iter);
|
|
}
|
|
}
|
|
return Siblings;
|
|
}
|
|
|
|
for (auto *ParentSibling : parent->ExtraData.siblings)
|
|
for (auto node_iter : ParentSibling->Callees)
|
|
if (node_iter->FuncId == FnId)
|
|
Siblings.push_back(node_iter);
|
|
|
|
return Siblings;
|
|
}
|
|
|
|
// Given a function being invoked in a thread with id TId, finds and returns the
|
|
// StackTrie representing the function call stack. If no node exists, creates
|
|
// the node. Assigns unique IDs to stacks newly encountered among all threads
|
|
// and keeps sibling links up to when creating new nodes.
|
|
StackTrieNode *findOrCreateStackNode(
|
|
StackTrieNode *Parent, int32_t FuncId, uint32_t TId,
|
|
DenseMap<uint32_t, SmallVector<StackTrieNode *, 4>> &StackRootsByThreadId,
|
|
DenseMap<unsigned, StackTrieNode *> &StacksByStackId, unsigned *id_counter,
|
|
std::forward_list<StackTrieNode> &NodeStore) {
|
|
SmallVector<StackTrieNode *, 4> &ParentCallees =
|
|
Parent == nullptr ? StackRootsByThreadId[TId] : Parent->Callees;
|
|
auto match = find_if(ParentCallees, [FuncId](StackTrieNode *ParentCallee) {
|
|
return FuncId == ParentCallee->FuncId;
|
|
});
|
|
if (match != ParentCallees.end())
|
|
return *match;
|
|
|
|
SmallVector<StackTrieNode *, 4> siblings =
|
|
findSiblings(Parent, FuncId, TId, StackRootsByThreadId);
|
|
if (siblings.empty()) {
|
|
NodeStore.push_front({FuncId, Parent, {}, {(*id_counter)++, {}}});
|
|
StackTrieNode *CurrentStack = &NodeStore.front();
|
|
StacksByStackId[*id_counter - 1] = CurrentStack;
|
|
ParentCallees.push_back(CurrentStack);
|
|
return CurrentStack;
|
|
}
|
|
unsigned stack_id = siblings[0]->ExtraData.id;
|
|
NodeStore.push_front({FuncId, Parent, {}, {stack_id, std::move(siblings)}});
|
|
StackTrieNode *CurrentStack = &NodeStore.front();
|
|
for (auto *sibling : CurrentStack->ExtraData.siblings)
|
|
sibling->ExtraData.siblings.push_back(CurrentStack);
|
|
ParentCallees.push_back(CurrentStack);
|
|
return CurrentStack;
|
|
}
|
|
|
|
void writeTraceViewerRecord(uint16_t Version, raw_ostream &OS, int32_t FuncId,
|
|
uint32_t TId, uint32_t PId, bool Symbolize,
|
|
const FuncIdConversionHelper &FuncIdHelper,
|
|
double EventTimestampUs,
|
|
const StackTrieNode &StackCursor,
|
|
StringRef FunctionPhenotype) {
|
|
OS << " ";
|
|
if (Version >= 3) {
|
|
OS << llvm::formatv(
|
|
R"({ "name" : "{0}", "ph" : "{1}", "tid" : "{2}", "pid" : "{3}", )"
|
|
R"("ts" : "{4:f4}", "sf" : "{5}" })",
|
|
(Symbolize ? FuncIdHelper.SymbolOrNumber(FuncId)
|
|
: llvm::to_string(FuncId)),
|
|
FunctionPhenotype, TId, PId, EventTimestampUs,
|
|
StackCursor.ExtraData.id);
|
|
} else {
|
|
OS << llvm::formatv(
|
|
R"({ "name" : "{0}", "ph" : "{1}", "tid" : "{2}", "pid" : "1", )"
|
|
R"("ts" : "{3:f3}", "sf" : "{4}" })",
|
|
(Symbolize ? FuncIdHelper.SymbolOrNumber(FuncId)
|
|
: llvm::to_string(FuncId)),
|
|
FunctionPhenotype, TId, EventTimestampUs, StackCursor.ExtraData.id);
|
|
}
|
|
}
|
|
|
|
} // namespace
|
|
|
|
void TraceConverter::exportAsChromeTraceEventFormat(const Trace &Records,
|
|
raw_ostream &OS) {
|
|
const auto &FH = Records.getFileHeader();
|
|
auto Version = FH.Version;
|
|
auto CycleFreq = FH.CycleFrequency;
|
|
|
|
unsigned id_counter = 0;
|
|
|
|
OS << "{\n \"traceEvents\": [";
|
|
DenseMap<uint32_t, StackTrieNode *> StackCursorByThreadId{};
|
|
DenseMap<uint32_t, SmallVector<StackTrieNode *, 4>> StackRootsByThreadId{};
|
|
DenseMap<unsigned, StackTrieNode *> StacksByStackId{};
|
|
std::forward_list<StackTrieNode> NodeStore{};
|
|
int loop_count = 0;
|
|
for (const auto &R : Records) {
|
|
if (loop_count++ == 0)
|
|
OS << "\n";
|
|
else
|
|
OS << ",\n";
|
|
|
|
// Chrome trace event format always wants data in micros.
|
|
// CyclesPerMicro = CycleHertz / 10^6
|
|
// TSC / CyclesPerMicro == TSC * 10^6 / CycleHertz == MicroTimestamp
|
|
// Could lose some precision here by converting the TSC to a double to
|
|
// multiply by the period in micros. 52 bit mantissa is a good start though.
|
|
// TODO: Make feature request to Chrome Trace viewer to accept ticks and a
|
|
// frequency or do some more involved calculation to avoid dangers of
|
|
// conversion.
|
|
double EventTimestampUs = double(1000000) / CycleFreq * double(R.TSC);
|
|
StackTrieNode *&StackCursor = StackCursorByThreadId[R.TId];
|
|
switch (R.Type) {
|
|
case RecordTypes::CUSTOM_EVENT:
|
|
case RecordTypes::TYPED_EVENT:
|
|
// TODO: Support typed and custom event rendering on Chrome Trace Viewer.
|
|
break;
|
|
case RecordTypes::ENTER:
|
|
case RecordTypes::ENTER_ARG:
|
|
StackCursor = findOrCreateStackNode(StackCursor, R.FuncId, R.TId,
|
|
StackRootsByThreadId, StacksByStackId,
|
|
&id_counter, NodeStore);
|
|
// Each record is represented as a json dictionary with function name,
|
|
// type of B for begin or E for end, thread id, process id,
|
|
// timestamp in microseconds, and a stack frame id. The ids are logged
|
|
// in an id dictionary after the events.
|
|
writeTraceViewerRecord(Version, OS, R.FuncId, R.TId, R.PId, Symbolize,
|
|
FuncIdHelper, EventTimestampUs, *StackCursor, "B");
|
|
break;
|
|
case RecordTypes::EXIT:
|
|
case RecordTypes::TAIL_EXIT:
|
|
// No entries to record end for.
|
|
if (StackCursor == nullptr)
|
|
break;
|
|
// Should we emit an END record anyway or account this condition?
|
|
// (And/Or in loop termination below)
|
|
StackTrieNode *PreviousCursor = nullptr;
|
|
do {
|
|
if (PreviousCursor != nullptr) {
|
|
OS << ",\n";
|
|
}
|
|
writeTraceViewerRecord(Version, OS, StackCursor->FuncId, R.TId, R.PId,
|
|
Symbolize, FuncIdHelper, EventTimestampUs,
|
|
*StackCursor, "E");
|
|
PreviousCursor = StackCursor;
|
|
StackCursor = StackCursor->Parent;
|
|
} while (PreviousCursor->FuncId != R.FuncId && StackCursor != nullptr);
|
|
break;
|
|
}
|
|
}
|
|
OS << "\n ],\n"; // Close the Trace Events array.
|
|
OS << " "
|
|
<< "\"displayTimeUnit\": \"ns\",\n";
|
|
|
|
// The stackFrames dictionary substantially reduces size of the output file by
|
|
// avoiding repeating the entire call stack of function names for each entry.
|
|
OS << R"( "stackFrames": {)";
|
|
int stack_frame_count = 0;
|
|
for (auto map_iter : StacksByStackId) {
|
|
if (stack_frame_count++ == 0)
|
|
OS << "\n";
|
|
else
|
|
OS << ",\n";
|
|
OS << " ";
|
|
OS << llvm::formatv(
|
|
R"("{0}" : { "name" : "{1}")", map_iter.first,
|
|
(Symbolize ? FuncIdHelper.SymbolOrNumber(map_iter.second->FuncId)
|
|
: llvm::to_string(map_iter.second->FuncId)));
|
|
if (map_iter.second->Parent != nullptr)
|
|
OS << llvm::formatv(R"(, "parent": "{0}")",
|
|
map_iter.second->Parent->ExtraData.id);
|
|
OS << " }";
|
|
}
|
|
OS << "\n }\n"; // Close the stack frames map.
|
|
OS << "}\n"; // Close the JSON entry.
|
|
}
|
|
|
|
namespace llvm {
|
|
namespace xray {
|
|
|
|
static CommandRegistration Unused(&Convert, []() -> Error {
|
|
// FIXME: Support conversion to BINARY when upgrading XRay trace versions.
|
|
InstrumentationMap Map;
|
|
if (!ConvertInstrMap.empty()) {
|
|
auto InstrumentationMapOrError = loadInstrumentationMap(ConvertInstrMap);
|
|
if (!InstrumentationMapOrError)
|
|
return joinErrors(make_error<StringError>(
|
|
Twine("Cannot open instrumentation map '") +
|
|
ConvertInstrMap + "'",
|
|
std::make_error_code(std::errc::invalid_argument)),
|
|
InstrumentationMapOrError.takeError());
|
|
Map = std::move(*InstrumentationMapOrError);
|
|
}
|
|
|
|
const auto &FunctionAddresses = Map.getFunctionAddresses();
|
|
symbolize::LLVMSymbolizer Symbolizer;
|
|
llvm::xray::FuncIdConversionHelper FuncIdHelper(ConvertInstrMap, Symbolizer,
|
|
FunctionAddresses);
|
|
llvm::xray::TraceConverter TC(FuncIdHelper, ConvertSymbolize);
|
|
std::error_code EC;
|
|
raw_fd_ostream OS(ConvertOutput, EC,
|
|
ConvertOutputFormat == ConvertFormats::BINARY
|
|
? sys::fs::OpenFlags::OF_None
|
|
: sys::fs::OpenFlags::OF_Text);
|
|
if (EC)
|
|
return make_error<StringError>(
|
|
Twine("Cannot open file '") + ConvertOutput + "' for writing.", EC);
|
|
|
|
auto TraceOrErr = loadTraceFile(ConvertInput, ConvertSortInput);
|
|
if (!TraceOrErr)
|
|
return joinErrors(
|
|
make_error<StringError>(
|
|
Twine("Failed loading input file '") + ConvertInput + "'.",
|
|
std::make_error_code(std::errc::executable_format_error)),
|
|
TraceOrErr.takeError());
|
|
|
|
auto &T = *TraceOrErr;
|
|
switch (ConvertOutputFormat) {
|
|
case ConvertFormats::YAML:
|
|
TC.exportAsYAML(T, OS);
|
|
break;
|
|
case ConvertFormats::BINARY:
|
|
TC.exportAsRAWv1(T, OS);
|
|
break;
|
|
case ConvertFormats::CHROME_TRACE_EVENT:
|
|
TC.exportAsChromeTraceEventFormat(T, OS);
|
|
break;
|
|
}
|
|
return Error::success();
|
|
});
|
|
|
|
} // namespace xray
|
|
} // namespace llvm
|