}
+// Linux perf tool logging support
+class PerfBasicLogger : public CodeEventLogger {
+ public:
+ PerfBasicLogger();
+ virtual ~PerfBasicLogger();
+
+ virtual void CodeMoveEvent(Address from, Address to) { }
+ virtual void CodeDeleteEvent(Address from) { }
+
+ private:
+ virtual void LogRecordedBuffer(Code* code,
+ SharedFunctionInfo* shared,
+ const char* name,
+ int length);
+
+ // Extension added to V8 log file name to get the low-level log name.
+ static const char kFilenameFormatString[];
+ static const int kFilenameBufferPadding;
+
+ // File buffer size of the low-level log. We don't use the default to
+ // minimize the associated overhead.
+ static const int kLogBufferSize = 2 * MB;
+
+ FILE* perf_output_handle_;
+};
+
+const char PerfBasicLogger::kFilenameFormatString[] = "/tmp/perf-%d.map";
+// Extra space for the PID in the filename
+const int PerfBasicLogger::kFilenameBufferPadding = 16;
+
+PerfBasicLogger::PerfBasicLogger()
+ : perf_output_handle_(NULL) {
+ // Open the perf JIT dump file.
+ int bufferSize = sizeof(kFilenameFormatString) + kFilenameBufferPadding;
+ ScopedVector<char> perf_dump_name(bufferSize);
+ int size = OS::SNPrintF(
+ perf_dump_name,
+ kFilenameFormatString,
+ OS::GetCurrentProcessId());
+ CHECK_NE(size, -1);
+ perf_output_handle_ = OS::FOpen(perf_dump_name.start(), OS::LogFileOpenMode);
+ CHECK_NE(perf_output_handle_, NULL);
+ setvbuf(perf_output_handle_, NULL, _IOFBF, kLogBufferSize);
+}
+
+
+PerfBasicLogger::~PerfBasicLogger() {
+ fclose(perf_output_handle_);
+ perf_output_handle_ = NULL;
+}
+
+
+void PerfBasicLogger::LogRecordedBuffer(Code* code,
+ SharedFunctionInfo*,
+ const char* name,
+ int length) {
+ ASSERT(code->instruction_start() == code->address() + Code::kHeaderSize);
+
+ OS::FPrint(perf_output_handle_, "%llx %x %.*s\n",
+ reinterpret_cast<uint64_t>(code->instruction_start()),
+ code->instruction_size(),
+ length, name);
+}
+
+
+// Linux perf tool logging support
+class PerfJitLogger : public CodeEventLogger {
+ public:
+ PerfJitLogger();
+ virtual ~PerfJitLogger();
+
+ virtual void CodeMoveEvent(Address from, Address to) { }
+ virtual void CodeDeleteEvent(Address from) { }
+
+ private:
+ virtual void LogRecordedBuffer(Code* code,
+ SharedFunctionInfo* shared,
+ const char* name,
+ int length);
+
+ // Extension added to V8 log file name to get the low-level log name.
+ static const char kFilenameFormatString[];
+ static const int kFilenameBufferPadding;
+
+ // File buffer size of the low-level log. We don't use the default to
+ // minimize the associated overhead.
+ static const int kLogBufferSize = 2 * MB;
+
+ void LogWriteBytes(const char* bytes, int size);
+ void LogWriteHeader();
+
+ static const uint32_t kJitHeaderMagic = 0x4F74496A;
+ static const uint32_t kJitHeaderVersion = 0x2;
+ static const uint32_t kElfMachIA32 = 3;
+ static const uint32_t kElfMachX64 = 62;
+ static const uint32_t kElfMachARM = 40;
+ static const uint32_t kElfMachMIPS = 10;
+
+ struct jitheader {
+ uint32_t magic;
+ uint32_t version;
+ uint32_t total_size;
+ uint32_t elf_mach;
+ uint32_t pad1;
+ uint32_t pid;
+ uint64_t timestamp;
+ };
+
+ enum jit_record_type {
+ JIT_CODE_LOAD = 0
+ // JIT_CODE_UNLOAD = 1,
+ // JIT_CODE_CLOSE = 2,
+ // JIT_CODE_DEBUG_INFO = 3,
+ // JIT_CODE_PAGE_MAP = 4,
+ // JIT_CODE_MAX = 5
+ };
+
+ struct jr_code_load {
+ uint32_t id;
+ uint32_t total_size;
+ uint64_t timestamp;
+ uint64_t vma;
+ uint64_t code_addr;
+ uint32_t code_size;
+ uint32_t align;
+ };
+
+ uint32_t GetElfMach() {
+#if V8_TARGET_ARCH_IA32
+ return kElfMachIA32;
+#elif V8_TARGET_ARCH_X64
+ return kElfMachX64;
+#elif V8_TARGET_ARCH_ARM
+ return kElfMachARM;
+#elif V8_TARGET_ARCH_MIPS
+ return kElfMachMIPS;
+#else
+ UNIMPLEMENTED();
+ return 0;
+#endif
+ }
+
+ FILE* perf_output_handle_;
+};
+
+const char PerfJitLogger::kFilenameFormatString[] = "/tmp/jit-%d.dump";
+
+// Extra padding for the PID in the filename
+const int PerfJitLogger::kFilenameBufferPadding = 16;
+
+PerfJitLogger::PerfJitLogger()
+ : perf_output_handle_(NULL) {
+ // Open the perf JIT dump file.
+ int bufferSize = sizeof(kFilenameFormatString) + kFilenameBufferPadding;
+ ScopedVector<char> perf_dump_name(bufferSize);
+ int size = OS::SNPrintF(
+ perf_dump_name,
+ kFilenameFormatString,
+ OS::GetCurrentProcessId());
+ CHECK_NE(size, -1);
+ perf_output_handle_ = OS::FOpen(perf_dump_name.start(), OS::LogFileOpenMode);
+ CHECK_NE(perf_output_handle_, NULL);
+ setvbuf(perf_output_handle_, NULL, _IOFBF, kLogBufferSize);
+
+ LogWriteHeader();
+}
+
+
+PerfJitLogger::~PerfJitLogger() {
+ fclose(perf_output_handle_);
+ perf_output_handle_ = NULL;
+}
+
+
+void PerfJitLogger::LogRecordedBuffer(Code* code,
+ SharedFunctionInfo*,
+ const char* name,
+ int length) {
+ ASSERT(code->instruction_start() == code->address() + Code::kHeaderSize);
+ ASSERT(perf_output_handle_ != NULL);
+
+ const char* code_name = name;
+ uint8_t* code_pointer = reinterpret_cast<uint8_t*>(code->instruction_start());
+ uint32_t code_size = code->instruction_size();
+
+ static const char string_terminator[] = "\0";
+
+ jr_code_load code_load;
+ code_load.id = JIT_CODE_LOAD;
+ code_load.total_size = sizeof(code_load) + length + 1 + code_size;
+ code_load.timestamp =
+ static_cast<uint64_t>(OS::TimeCurrentMillis() * 1000.0);
+ code_load.vma = 0x0; // Our addresses are absolute.
+ code_load.code_addr = reinterpret_cast<uint64_t>(code->instruction_start());
+ code_load.code_size = code_size;
+ code_load.align = 0;
+
+ LogWriteBytes(reinterpret_cast<const char*>(&code_load), sizeof(code_load));
+ LogWriteBytes(code_name, length);
+ LogWriteBytes(string_terminator, 1);
+ LogWriteBytes(reinterpret_cast<const char*>(code_pointer), code_size);
+}
+
+
+void PerfJitLogger::LogWriteBytes(const char* bytes, int size) {
+ size_t rv = fwrite(bytes, 1, size, perf_output_handle_);
+ ASSERT(static_cast<size_t>(size) == rv);
+ USE(rv);
+}
+
+
+void PerfJitLogger::LogWriteHeader() {
+ ASSERT(perf_output_handle_ != NULL);
+ jitheader header;
+ header.magic = kJitHeaderMagic;
+ header.version = kJitHeaderVersion;
+ header.total_size = sizeof(jitheader);
+ header.pad1 = 0xdeadbeef;
+ header.elf_mach = GetElfMach();
+ header.pid = OS::GetCurrentProcessId();
+ header.timestamp = static_cast<uint64_t>(OS::TimeCurrentMillis() * 1000.0);
+ LogWriteBytes(reinterpret_cast<const char*>(&header), sizeof(header));
+}
+
+
// Low-level logging support.
#define LL_LOG(Call) if (ll_logger_) ll_logger_->Call;
log_events_(NULL),
is_logging_(false),
log_(new Log(this)),
+ perf_basic_logger_(NULL),
+ perf_jit_logger_(NULL),
ll_logger_(NULL),
jit_logger_(NULL),
listeners_(5),
PrepareLogFileName(isolate, FLAG_logfile);
log_->Initialize(*log_file_name);
+
+ if (FLAG_perf_basic_prof) {
+ perf_basic_logger_ = new PerfBasicLogger();
+ addCodeEventListener(perf_basic_logger_);
+ }
+
+ if (FLAG_perf_jit_prof) {
+ perf_jit_logger_ = new PerfJitLogger();
+ addCodeEventListener(perf_jit_logger_);
+ }
+
if (FLAG_ll_prof) {
ll_logger_ = new LowLevelLogger(*log_file_name);
addCodeEventListener(ll_logger_);
delete ticker_;
ticker_ = NULL;
+ if (perf_basic_logger_) {
+ removeCodeEventListener(perf_basic_logger_);
+ delete perf_basic_logger_;
+ perf_basic_logger_ = NULL;
+ }
+
+ if (perf_jit_logger_) {
+ removeCodeEventListener(perf_jit_logger_);
+ delete perf_jit_logger_;
+ perf_jit_logger_ = NULL;
+ }
+
if (ll_logger_) {
removeCodeEventListener(ll_logger_);
delete ll_logger_;
projects / platform / upstream / v8.git / commitdiff