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// SPDX-FileCopyrightText: 2002-2025 PCSX2 Dev Team
// SPDX-License-Identifier: GPL-3.0+
#include "common/Perf.h"
#include "common/Pcsx2Defs.h"
#include "common/Assertions.h"
#include "common/StringUtil.h"
#ifdef ENABLE_VTUNE
#include "jitprofiling.h"
#endif
#include <array>
#include <cstring>
#ifdef __linux__
#include <atomic>
#include <ctime>
#include <mutex>
#include <elf.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/syscall.h>
#endif
//#define ProfileWithPerf
//#define ProfileWithPerfJitDump
#if defined(ENABLE_VTUNE) && defined(_WIN32)
#pragma comment(lib, "jitprofiling.lib")
#endif
namespace Perf
{
Group any("");
Group ee("EE");
Group iop("IOP");
Group vu0("VU0");
Group vu1("VU1");
Group vif("VIF");
// Perf is only supported on linux
#if defined(__linux__) && defined(ProfileWithPerf)
static std::FILE* s_map_file = nullptr;
static bool s_map_file_opened = false;
static std::mutex s_mutex;
static void RegisterMethod(const void* ptr, size_t size, const char* symbol)
{
std::unique_lock lock(s_mutex);
if (!s_map_file)
{
if (s_map_file_opened)
return;
char file[256];
snprintf(file, std::size(file), "/tmp/perf-%d.map", getpid());
s_map_file = std::fopen(file, "wb");
s_map_file_opened = true;
if (!s_map_file)
return;
}
std::fprintf(s_map_file, "%" PRIx64 " %zx %s\n", static_cast<u64>(reinterpret_cast<uintptr_t>(ptr)), size, symbol);
std::fflush(s_map_file);
}
#elif defined(__linux__) && defined(ProfileWithPerfJitDump)
enum : u32
{
JIT_CODE_LOAD = 0,
JIT_CODE_MOVE = 1,
JIT_CODE_DEBUG_INFO = 2,
JIT_CODE_CLOSE = 3,
JIT_CODE_UNWINDING_INFO = 4
};
#pragma pack(push, 1)
struct JITDUMP_HEADER
{
u32 magic = 0x4A695444; // JiTD
u32 version = 1;
u32 header_size = sizeof(JITDUMP_HEADER);
u32 elf_mach;
u32 pad1 = 0;
u32 pid;
u64 timestamp;
u64 flags = 0;
};
struct JITDUMP_RECORD_HEADER
{
u32 id;
u32 total_size;
u64 timestamp;
};
struct JITDUMP_CODE_LOAD
{
JITDUMP_RECORD_HEADER header;
u32 pid;
u32 tid;
u64 vma;
u64 code_addr;
u64 code_size;
u64 code_index;
// name
};
#pragma pack(pop)
static u64 JitDumpTimestamp()
{
struct timespec ts = {};
clock_gettime(CLOCK_MONOTONIC, &ts);
return (static_cast<u64>(ts.tv_sec) * 1000000000ULL) + static_cast<u64>(ts.tv_nsec);
}
static FILE* s_jitdump_file = nullptr;
static bool s_jitdump_file_opened = false;
static std::mutex s_jitdump_mutex;
static u32 s_jitdump_record_id;
static void RegisterMethod(const void* ptr, size_t size, const char* symbol)
{
const u32 namelen = std::strlen(symbol) + 1;
std::unique_lock lock(s_jitdump_mutex);
if (!s_jitdump_file)
{
if (!s_jitdump_file_opened)
{
char file[256];
snprintf(file, std::size(file), "jit-%d.dump", getpid());
s_jitdump_file = fopen(file, "w+b");
s_jitdump_file_opened = true;
if (!s_jitdump_file)
return;
}
void* perf_marker = mmap(nullptr, 4096, PROT_READ | PROT_EXEC, MAP_PRIVATE, fileno(s_jitdump_file), 0);
pxAssertRel(perf_marker != MAP_FAILED, "Map perf marker");
JITDUMP_HEADER jh = {};
#if defined(_M_X86)
jh.elf_mach = EM_X86_64;
#elif defined(_M_ARM64)
jh.elf_mach = EM_AARCH64;
#else
#error Unhandled architecture.
#endif
jh.pid = getpid();
jh.timestamp = JitDumpTimestamp();
std::fwrite(&jh, sizeof(jh), 1, s_jitdump_file);
}
JITDUMP_CODE_LOAD cl = {};
cl.header.id = JIT_CODE_LOAD;
cl.header.total_size = sizeof(cl) + namelen + static_cast<u32>(size);
cl.header.timestamp = JitDumpTimestamp();
cl.pid = getpid();
cl.tid = syscall(SYS_gettid);
cl.vma = 0;
cl.code_addr = static_cast<u64>(reinterpret_cast<uintptr_t>(ptr));
cl.code_size = static_cast<u64>(size);
cl.code_index = s_jitdump_record_id++;
std::fwrite(&cl, sizeof(cl), 1, s_jitdump_file);
std::fwrite(symbol, namelen, 1, s_jitdump_file);
std::fwrite(ptr, size, 1, s_jitdump_file);
std::fflush(s_jitdump_file);
}
#elif defined(ENABLE_VTUNE)
static void RegisterMethod(const void* ptr, size_t size, const char* symbol)
{
iJIT_Method_Load_V2 ml = {};
ml.method_id = iJIT_GetNewMethodID();
ml.method_name = const_cast<char*>(symbol);
ml.method_load_address = const_cast<void*>(ptr);
ml.method_size = static_cast<unsigned int>(size);
iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED_V2, &ml);
}
#endif
#if (defined(__linux__) && (defined(ProfileWithPerf) || defined(ProfileWithPerfJitDump))) || defined(ENABLE_VTUNE)
void Group::Register(const void* ptr, size_t size, const char* symbol)
{
char full_symbol[128];
if (HasPrefix())
std::snprintf(full_symbol, std::size(full_symbol), "%s_%s", m_prefix, symbol);
else
StringUtil::Strlcpy(full_symbol, symbol, std::size(full_symbol));
RegisterMethod(ptr, size, full_symbol);
}
void Group::RegisterPC(const void* ptr, size_t size, u32 pc)
{
char full_symbol[128];
if (HasPrefix())
std::snprintf(full_symbol, std::size(full_symbol), "%s_%08X", m_prefix, pc);
else
std::snprintf(full_symbol, std::size(full_symbol), "%08X", pc);
RegisterMethod(ptr, size, full_symbol);
}
void Group::RegisterKey(const void* ptr, size_t size, const char* prefix, u64 key)
{
char full_symbol[128];
if (HasPrefix())
std::snprintf(full_symbol, std::size(full_symbol), "%s_%s%016" PRIX64, m_prefix, prefix, key);
else
std::snprintf(full_symbol, std::size(full_symbol), "%s%016" PRIX64, prefix, key);
RegisterMethod(ptr, size, full_symbol);
}
#else
void Group::Register(const void* ptr, size_t size, const char* symbol) {}
void Group::RegisterPC(const void* ptr, size_t size, u32 pc) {}
void Group::RegisterKey(const void* ptr, size_t size, const char* prefix, u64 key) {}
#endif
} // namespace Perf
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