Reland "Linux perf tool support update + refactoring." (r22146, attempt #5)

src/log.cc

Index: src/log.cc
diff --git a/src/log.cc b/src/log.cc
index ae5d37a8027366d1f19453b81c1b5627518b9044..e8ecb1412b3ad5d08894bb798c1e16defa1e22b6 100644
--- a/src/log.cc
+++ b/src/log.cc
@@ -15,6 +15,7 @@
 #include "src/log.h"
 #include "src/log-utils.h"
 #include "src/macro-assembler.h"
+#include "src/perf-jit.h"
 #include "src/runtime-profiler.h"
 #include "src/serialize.h"
 #include "src/string-stream.h"
@@ -289,172 +290,6 @@ void PerfBasicLogger::LogRecordedBuffer(Code* code,
 }
 
 
-// Linux perf tool logging support
-class PerfJitLogger : public CodeEventLogger {
- public:
-  PerfJitLogger();
-  virtual ~PerfJitLogger();
-
-  virtual void CodeMoveEvent(Address from, Address to) { }
-  virtual void CodeDisableOptEvent(Code* code, SharedFunctionInfo* shared) { }
-  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;
-  static const uint32_t kElfMachX87 = 3;
-
-  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;
-#elif V8_TARGET_ARCH_X87
-    return kElfMachX87;
-#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 = SNPrintF(
-      perf_dump_name,
-      kFilenameFormatString,
-      base::OS::GetCurrentProcessId());
-  CHECK_NE(size, -1);
-  perf_output_handle_ =
-      base::OS::FOpen(perf_dump_name.start(), base::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>(base::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 = base::OS::GetCurrentProcessId();
-  header.timestamp =
-      static_cast<uint64_t>(base::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;