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//===- ActionProfiler.cpp - Profiling Actions *- 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
//
//===----------------------------------------------------------------------===//
#include "mlir/Debug/Observers/ActionProfiler.h"
#include "mlir/Debug/BreakpointManager.h"
#include "mlir/IR/Action.h"
#include "mlir/Rewrite/PatternApplicator.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Threading.h"
#include "llvm/Support/raw_ostream.h"
#include <chrono>
using namespace mlir;
using namespace mlir::tracing;
//===----------------------------------------------------------------------===//
// ActionProfiler
//===----------------------------------------------------------------------===//
void ActionProfiler::beforeExecute(const ActionActiveStack *action,
Breakpoint *breakpoint, bool willExecute) {
print(action, "B"); // begin event.
}
void ActionProfiler::afterExecute(const ActionActiveStack *action) {
print(action, "E"); // end event.
}
// Print an event in JSON format.
void ActionProfiler::print(const ActionActiveStack *action,
llvm::StringRef phase) {
// Create the event.
std::string str;
llvm::raw_string_ostream event(str);
event << "{";
event << R"("name": ")" << action->getAction().getTag() << "\", ";
event << R"("cat": "PERF", )";
event << R"("ph": ")" << phase << "\", ";
event << R"("pid": 0, )";
event << R"("tid": )" << llvm::get_threadid() << ", ";
auto ts = std::chrono::steady_clock::now() - startTime;
event << R"("ts": )"
<< std::chrono::duration_cast<std::chrono::microseconds>(ts).count();
if (phase == "B") {
event << R"(, "args": {)";
event << R"("desc": ")";
action->getAction().print(event);
event << "\"}";
}
event << "}";
// Print the event.
std::lock_guard<std::mutex> guard(mutex);
if (printComma)
os << ",\n";
printComma = true;
os << event.str();
os.flush();
}
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