Merge pull request #1432 from randomstuff/linux-perf

Add Linux perf JIT support (/tmp/perf-$pid.map)

1 files changed, 115 insertions, 0 deletions

diff --git a/Source/Core/Common/JitRegister.cpp b/Source/Core/Common/JitRegister.cpp
new file mode 100644
index 0000000000..69ea7e5bba
--- /dev/null
+++ b/Source/Core/Common/JitRegister.cpp
@@ -0,0 +1,115 @@
+// Copyright 2014 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include <cinttypes>
+#include <cstddef>
+#include <cstdio>
+#include <fstream>
+#include <string>
+
+#include "Common/CommonTypes.h"
+#include "Common/FileUtil.h"
+#include "Common/JitRegister.h"
+#include "Common/StringUtil.h"
+#include "Core/ConfigManager.h"
+
+#ifdef _WIN32
+#include <process.h>
+#else
+#include <unistd.h>
+#endif
+
+#if defined USE_OPROFILE && USE_OPROFILE
+#include <opagent.h>
+#endif
+
+#if defined USE_VTUNE
+#include <jitprofiling.h>
+#pragma comment(lib, "libittnotify.lib")
+#pragma comment(lib, "jitprofiling.lib")
+#endif
+
+#if defined USE_OPROFILE && USE_OPROFILE
+static op_agent_t s_agent = nullptr;
+#endif
+
+static File::IOFile s_perf_map_file;
+
+namespace JitRegister
+{
+
+void Init()
+{
+#if defined USE_OPROFILE && USE_OPROFILE
+	s_agent = op_open_agent();
+#endif
+
+	const std::string& perf_dir = SConfig::GetInstance().m_LocalCoreStartupParameter.m_perfDir;
+	if (!perf_dir.empty())
+	{
+		std::string filename = StringFromFormat("%s/perf-%d.map", perf_dir.data(), 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(), NULL, _IONBF, 0);
+	}
+}
+
+void Shutdown()
+{
+#if defined USE_OPROFILE && USE_OPROFILE
+	op_close_agent(s_agent);
+	s_agent = nullptr;
+#endif
+
+#ifdef USE_VTUNE
+	iJIT_NotifyEvent(iJVM_EVENT_TYPE_SHUTDOWN, nullptr);
+#endif
+
+	if (s_perf_map_file.IsOpen())
+		s_perf_map_file.Close();
+}
+
+void Register(const void* base_address, u32 code_size,
+	const char* name, u32 original_address)
+{
+#if !(defined USE_OPROFILE && USE_OPROFILE) && !defined(USE_VTUNE)
+	if (!s_perf_map_file.IsOpen())
+		return;
+#endif
+
+	std::string symbol_name;
+	if (original_address)
+		symbol_name = StringFromFormat("%s_%x", name, original_address);
+	else
+		symbol_name = name;
+
+#if defined USE_OPROFILE && USE_OPROFILE
+	op_write_native_code(s_agent, symbol_name.data(), (u64)base_address,
+		base_address, code_size);
+#endif
+
+#ifdef USE_VTUNE
+	iJIT_Method_Load jmethod = {0};
+	jmethod.method_id = iJIT_GetNewMethodID();
+	jmethod.class_file_name = "";
+	jmethod.source_file_name = __FILE__;
+	jmethod.method_load_address = base_address;
+	jmethod.method_size = code_size;
+	jmethod.line_number_size = 0;
+	jmethod.method_name = symbol_name.data();
+	iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED, (void*)&jmethod);
+#endif
+
+	// Linux perf /tmp/perf-$pid.map:
+	if (s_perf_map_file.IsOpen())
+	{
+		std::string entry = StringFromFormat(
+			"%" PRIx64 " %x %s\n",
+			(u64)base_address, code_size, symbol_name.data());
+		s_perf_map_file.WriteBytes(entry.data(), entry.size());
+	}
+}
+
+}