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https://github.com/dolphin-emu/dolphin.git
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713dfb41df
OProfile is not used at all these days, most major distributions do not ship it anymore (Debian, Fedora, and Alpine to name the few I've checked) and following a discussion on Discord, nobody is apparently using it, most devs not even being aware of it. This removes an optional dependency from Dolphin.
90 lines
2.0 KiB
C++
90 lines
2.0 KiB
C++
// Copyright 2014 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "Common/JitRegister.h"
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#include <cstddef>
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#include <cstdio>
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#include <cstdlib>
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#include <fstream>
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#include <string>
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#include <fmt/format.h>
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#include "Common/CommonTypes.h"
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#include "Common/IOFile.h"
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#include "Common/StringUtil.h"
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#ifdef _WIN32
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#include <process.h>
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#else
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#include <unistd.h>
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#endif
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#if defined USE_VTUNE
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#include <jitprofiling.h>
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#pragma comment(lib, "jitprofiling.lib")
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#endif
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static File::IOFile s_perf_map_file;
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namespace Common::JitRegister
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{
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static bool s_is_enabled = false;
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void Init(const std::string& perf_dir)
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{
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if (!perf_dir.empty() || getenv("PERF_BUILDID_DIR"))
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{
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const std::string dir = perf_dir.empty() ? "/tmp" : perf_dir;
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const std::string filename = fmt::format("{}/perf-{}.map", dir, getpid());
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s_perf_map_file.Open(filename, "w");
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// Disable buffering in order to avoid missing some mappings
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// if the event of a crash:
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std::setvbuf(s_perf_map_file.GetHandle(), nullptr, _IONBF, 0);
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s_is_enabled = true;
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}
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}
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void Shutdown()
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{
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#ifdef USE_VTUNE
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iJIT_NotifyEvent(iJVM_EVENT_TYPE_SHUTDOWN, nullptr);
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#endif
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if (s_perf_map_file.IsOpen())
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s_perf_map_file.Close();
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s_is_enabled = false;
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}
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bool IsEnabled()
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{
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return s_is_enabled;
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}
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void Register(const void* base_address, u32 code_size, const std::string& symbol_name)
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{
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#ifndef USE_VTUNE
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if (!s_perf_map_file.IsOpen())
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return;
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#endif
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#ifdef USE_VTUNE
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iJIT_Method_Load jmethod = {0};
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jmethod.method_id = iJIT_GetNewMethodID();
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jmethod.method_load_address = const_cast<void*>(base_address);
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jmethod.method_size = code_size;
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jmethod.method_name = const_cast<char*>(symbol_name.c_str());
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iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED, (void*)&jmethod);
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#endif
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// Linux perf /tmp/perf-$pid.map:
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if (!s_perf_map_file.IsOpen())
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return;
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const auto entry = fmt::format("{} {:x} {}\n", fmt::ptr(base_address), code_size, symbol_name);
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s_perf_map_file.WriteBytes(entry.data(), entry.size());
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}
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} // namespace Common::JitRegister
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