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// Copyright 2014 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "Common/JitRegister.h"
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <fstream>
#include <string>
#include <fmt/format.h>
#include "Common/CommonTypes.h"
#include "Common/IOFile.h"
#include "Common/StringUtil.h"
#ifdef _WIN32
#include <process.h>
#else
#include <unistd.h>
#endif
#if defined USE_VTUNE
#include <jitprofiling.h>
#pragma comment(lib, "jitprofiling.lib")
#endif
static File::IOFile s_perf_map_file;
namespace Common::JitRegister
{
static bool s_is_enabled = false;
void Init(const std::string& perf_dir)
{
if (!perf_dir.empty() || getenv("PERF_BUILDID_DIR"))
{
const std::string dir = perf_dir.empty() ? "/tmp" : perf_dir;
const std::string filename = fmt::format("{}/perf-{}.map", dir, getpid());
s_perf_map_file.Open(filename, "w");
// Disable buffering in order to avoid missing some mappings
// if the event of a crash:
std::setvbuf(s_perf_map_file.GetHandle(), nullptr, _IONBF, 0);
s_is_enabled = true;
}
}
void Shutdown()
{
#ifdef USE_VTUNE
iJIT_NotifyEvent(iJVM_EVENT_TYPE_SHUTDOWN, nullptr);
#endif
if (s_perf_map_file.IsOpen())
s_perf_map_file.Close();
s_is_enabled = false;
}
bool IsEnabled()
{
return s_is_enabled;
}
void Register(const void* base_address, u32 code_size, const std::string& symbol_name)
{
#ifndef USE_VTUNE
if (!s_perf_map_file.IsOpen())
return;
#endif
#ifdef USE_VTUNE
iJIT_Method_Load jmethod = {0};
jmethod.method_id = iJIT_GetNewMethodID();
jmethod.method_load_address = const_cast<void*>(base_address);
jmethod.method_size = code_size;
jmethod.method_name = const_cast<char*>(symbol_name.c_str());
iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED, (void*)&jmethod);
#endif
// Linux perf /tmp/perf-$pid.map:
if (!s_perf_map_file.IsOpen())
return;
const auto entry = fmt::format("{} {:x} {}\n", fmt::ptr(base_address), code_size, symbol_name);
s_perf_map_file.WriteBytes(entry.data(), entry.size());
}
} // namespace Common::JitRegister
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