Revert 20968 - "Merge v8utils.* and utils.*"

src/utils.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1036 matching lines @@
   typedef typename C::reverse_iterator reverse_iterator;
   explicit ContainerPointerWrapper(C* container) : container_(container) {}
   iterator begin() { return container_->begin(); }
   iterator end() { return container_->end(); }
   reverse_iterator rbegin() { return container_->rbegin(); }
   reverse_iterator rend() { return container_->rend(); }
  private:
   C* container_;
 };
 
-
-// ----------------------------------------------------------------------------
-// I/O support.
-
-#if __GNUC__ >= 4
-// On gcc we can ask the compiler to check the types of %d-style format
-// specifiers and their associated arguments.  TODO(erikcorry) fix this
-// so it works on MacOSX.
-#if defined(__MACH__) && defined(__APPLE__)
-#define PRINTF_CHECKING
-#define FPRINTF_CHECKING
-#define PRINTF_METHOD_CHECKING
-#define FPRINTF_METHOD_CHECKING
-#else  // MacOsX.
-#define PRINTF_CHECKING __attribute__ ((format (printf, 1, 2)))
-#define FPRINTF_CHECKING __attribute__ ((format (printf, 2, 3)))
-#define PRINTF_METHOD_CHECKING __attribute__ ((format (printf, 2, 3)))
-#define FPRINTF_METHOD_CHECKING __attribute__ ((format (printf, 3, 4)))
-#endif
-#else
-#define PRINTF_CHECKING
-#define FPRINTF_CHECKING
-#define PRINTF_METHOD_CHECKING
-#define FPRINTF_METHOD_CHECKING
-#endif
-
-// Our version of printf().
-void PRINTF_CHECKING PrintF(const char* format, ...);
-void FPRINTF_CHECKING PrintF(FILE* out, const char* format, ...);
-
-// Prepends the current process ID to the output.
-void PRINTF_CHECKING PrintPID(const char* format, ...);
-
-// Our version of fflush.
-void Flush(FILE* out);
-
-inline void Flush() {
-  Flush(stdout);
-}
-
-
-// Read a line of characters after printing the prompt to stdout. The resulting
-// char* needs to be disposed off with DeleteArray by the caller.
-char* ReadLine(const char* prompt);
-
-
-// Read and return the raw bytes in a file. the size of the buffer is returned
-// in size.
-// The returned buffer must be freed by the caller.
-byte* ReadBytes(const char* filename, int* size, bool verbose = true);
-
-
-// Append size chars from str to the file given by filename.
-// The file is overwritten. Returns the number of chars written.
-int AppendChars(const char* filename,
-                const char* str,
-                int size,
-                bool verbose = true);
-
-
-// Write size chars from str to the file given by filename.
-// The file is overwritten. Returns the number of chars written.
-int WriteChars(const char* filename,
-               const char* str,
-               int size,
-               bool verbose = true);
-
-
-// Write size bytes to the file given by filename.
-// The file is overwritten. Returns the number of bytes written.
-int WriteBytes(const char* filename,
-               const byte* bytes,
-               int size,
-               bool verbose = true);
-
-
-// Write the C code
-// const char* <varname> = "<str>";
-// const int <varname>_len = <len>;
-// to the file given by filename. Only the first len chars are written.
-int WriteAsCFile(const char* filename, const char* varname,
-                 const char* str, int size, bool verbose = true);
-
-
-// ----------------------------------------------------------------------------
-// Data structures
-
-template <typename T>
-inline Vector< Handle<Object> > HandleVector(v8::internal::Handle<T>* elms,
-                                             int length) {
-  return Vector< Handle<Object> >(
-      reinterpret_cast<v8::internal::Handle<Object>*>(elms), length);
-}
-
-
-// ----------------------------------------------------------------------------
-// Memory
-
-// Copies words from |src| to |dst|. The data spans must not overlap.
-template <typename T>
-inline void CopyWords(T* dst, const T* src, size_t num_words) {
-  STATIC_ASSERT(sizeof(T) == kPointerSize);
-  ASSERT(Min(dst, const_cast<T*>(src)) + num_words <=
-         Max(dst, const_cast<T*>(src)));
-  ASSERT(num_words > 0);
-
-  // Use block copying OS::MemCopy if the segment we're copying is
-  // enough to justify the extra call/setup overhead.
-  static const size_t kBlockCopyLimit = 16;
-
-  if (num_words < kBlockCopyLimit) {
-    do {
-      num_words--;
-      *dst++ = *src++;
-    } while (num_words > 0);
-  } else {
-    OS::MemCopy(dst, src, num_words * kPointerSize);
-  }
-}
-
-
-// Copies words from |src| to |dst|. No restrictions.
-template <typename T>
-inline void MoveWords(T* dst, const T* src, size_t num_words) {
-  STATIC_ASSERT(sizeof(T) == kPointerSize);
-  ASSERT(num_words > 0);
-
-  // Use block copying OS::MemCopy if the segment we're copying is
-  // enough to justify the extra call/setup overhead.
-  static const size_t kBlockCopyLimit = 16;
-
-  if (num_words < kBlockCopyLimit &&
-      ((dst < src) || (dst >= (src + num_words * kPointerSize)))) {
-    T* end = dst + num_words;
-    do {
-      num_words--;
-      *dst++ = *src++;
-    } while (num_words > 0);
-  } else {
-    OS::MemMove(dst, src, num_words * kPointerSize);
-  }
-}
-
-
-// Copies data from |src| to |dst|.  The data spans must not overlap.
-template <typename T>
-inline void CopyBytes(T* dst, const T* src, size_t num_bytes) {
-  STATIC_ASSERT(sizeof(T) == 1);
-  ASSERT(Min(dst, const_cast<T*>(src)) + num_bytes <=
-         Max(dst, const_cast<T*>(src)));
-  if (num_bytes == 0) return;
-
-  // Use block copying OS::MemCopy if the segment we're copying is
-  // enough to justify the extra call/setup overhead.
-  static const int kBlockCopyLimit = OS::kMinComplexMemCopy;
-
-  if (num_bytes < static_cast<size_t>(kBlockCopyLimit)) {
-    do {
-      num_bytes--;
-      *dst++ = *src++;
-    } while (num_bytes > 0);
-  } else {
-    OS::MemCopy(dst, src, num_bytes);
-  }
-}
-
-
-template <typename T, typename U>
-inline void MemsetPointer(T** dest, U* value, int counter) {
-#ifdef DEBUG
-  T* a = NULL;
-  U* b = NULL;
-  a = b;  // Fake assignment to check assignability.
-  USE(a);
-#endif  // DEBUG
-#if V8_HOST_ARCH_IA32
-#define STOS "stosl"
-#elif V8_HOST_ARCH_X64
-#define STOS "stosq"
-#endif
-#if defined(__native_client__)
-  // This STOS sequence does not validate for x86_64 Native Client.
-  // Here we #undef STOS to force use of the slower C version.
-  // TODO(bradchen): Profile V8 and implement a faster REP STOS
-  // here if the profile indicates it matters.
-#undef STOS
-#endif
-
-#if defined(MEMORY_SANITIZER)
-  // MemorySanitizer does not understand inline assembly.
-#undef STOS
-#endif
-
-#if defined(__GNUC__) && defined(STOS)
-  asm volatile(
-      "cld;"
-      "rep ; " STOS
-      : "+&c" (counter), "+&D" (dest)
-      : "a" (value)
-      : "memory", "cc");
-#else
-  for (int i = 0; i < counter; i++) {
-    dest[i] = value;
-  }
-#endif
-
-#undef STOS
-}
-
-
-// Simple wrapper that allows an ExternalString to refer to a
-// Vector<const char>. Doesn't assume ownership of the data.
-class AsciiStringAdapter: public v8::String::ExternalAsciiStringResource {
- public:
-  explicit AsciiStringAdapter(Vector<const char> data) : data_(data) {}
-
-  virtual const char* data() const { return data_.start(); }
-
-  virtual size_t length() const { return data_.length(); }
-
- private:
-  Vector<const char> data_;
-};
-
-
-// Simple support to read a file into a 0-terminated C-string.
-// The returned buffer must be freed by the caller.
-// On return, *exits tells whether the file existed.
-Vector<const char> ReadFile(const char* filename,
-                            bool* exists,
-                            bool verbose = true);
-Vector<const char> ReadFile(FILE* file,
-                            bool* exists,
-                            bool verbose = true);
-
-
-template <typename sourcechar, typename sinkchar>
-INLINE(static void CopyCharsUnsigned(sinkchar* dest,
-                                     const sourcechar* src,
-                                     int chars));
-#if defined(V8_HOST_ARCH_ARM)
-INLINE(void CopyCharsUnsigned(uint8_t* dest, const uint8_t* src, int chars));
-INLINE(void CopyCharsUnsigned(uint16_t* dest, const uint8_t* src, int chars));
-INLINE(void CopyCharsUnsigned(uint16_t* dest, const uint16_t* src, int chars));
-#elif defined(V8_HOST_ARCH_MIPS)
-INLINE(void CopyCharsUnsigned(uint8_t* dest, const uint8_t* src, int chars));
-INLINE(void CopyCharsUnsigned(uint16_t* dest, const uint16_t* src, int chars));
-#endif
-
-// Copy from ASCII/16bit chars to ASCII/16bit chars.
-template <typename sourcechar, typename sinkchar>
-INLINE(void CopyChars(sinkchar* dest, const sourcechar* src, int chars));
-
-template<typename sourcechar, typename sinkchar>
-void CopyChars(sinkchar* dest, const sourcechar* src, int chars) {
-  ASSERT(sizeof(sourcechar) <= 2);
-  ASSERT(sizeof(sinkchar) <= 2);
-  if (sizeof(sinkchar) == 1) {
-    if (sizeof(sourcechar) == 1) {
-      CopyCharsUnsigned(reinterpret_cast<uint8_t*>(dest),
-                        reinterpret_cast<const uint8_t*>(src),
-                        chars);
-    } else {
-      CopyCharsUnsigned(reinterpret_cast<uint8_t*>(dest),
-                        reinterpret_cast<const uint16_t*>(src),
-                        chars);
-    }
-  } else {
-    if (sizeof(sourcechar) == 1) {
-      CopyCharsUnsigned(reinterpret_cast<uint16_t*>(dest),
-                        reinterpret_cast<const uint8_t*>(src),
-                        chars);
-    } else {
-      CopyCharsUnsigned(reinterpret_cast<uint16_t*>(dest),
-                        reinterpret_cast<const uint16_t*>(src),
-                        chars);
-    }
-  }
-}
-
-template <typename sourcechar, typename sinkchar>
-void CopyCharsUnsigned(sinkchar* dest, const sourcechar* src, int chars) {
-  sinkchar* limit = dest + chars;
-#ifdef V8_HOST_CAN_READ_UNALIGNED
-  if (sizeof(*dest) == sizeof(*src)) {
-    if (chars >= static_cast<int>(OS::kMinComplexMemCopy / sizeof(*dest))) {
-      OS::MemCopy(dest, src, chars * sizeof(*dest));
-      return;
-    }
-    // Number of characters in a uintptr_t.
-    static const int kStepSize = sizeof(uintptr_t) / sizeof(*dest);  // NOLINT
-    ASSERT(dest + kStepSize > dest);  // Check for overflow.
-    while (dest + kStepSize <= limit) {
-      *reinterpret_cast<uintptr_t*>(dest) =
-          *reinterpret_cast<const uintptr_t*>(src);
-      dest += kStepSize;
-      src += kStepSize;
-    }
-  }
-#endif
-  while (dest < limit) {
-    *dest++ = static_cast<sinkchar>(*src++);
-  }
-}
-
-
-#if defined(V8_HOST_ARCH_ARM)
-void CopyCharsUnsigned(uint8_t* dest, const uint8_t* src, int chars) {
-  switch (static_cast<unsigned>(chars)) {
-    case 0:
-      break;
-    case 1:
-      *dest = *src;
-      break;
-    case 2:
-      memcpy(dest, src, 2);
-      break;
-    case 3:
-      memcpy(dest, src, 3);
-      break;
-    case 4:
-      memcpy(dest, src, 4);
-      break;
-    case 5:
-      memcpy(dest, src, 5);
-      break;
-    case 6:
-      memcpy(dest, src, 6);
-      break;
-    case 7:
-      memcpy(dest, src, 7);
-      break;
-    case 8:
-      memcpy(dest, src, 8);
-      break;
-    case 9:
-      memcpy(dest, src, 9);
-      break;
-    case 10:
-      memcpy(dest, src, 10);
-      break;
-    case 11:
-      memcpy(dest, src, 11);
-      break;
-    case 12:
-      memcpy(dest, src, 12);
-      break;
-    case 13:
-      memcpy(dest, src, 13);
-      break;
-    case 14:
-      memcpy(dest, src, 14);
-      break;
-    case 15:
-      memcpy(dest, src, 15);
-      break;
-    default:
-      OS::MemCopy(dest, src, chars);
-      break;
-  }
-}
-
-
-void CopyCharsUnsigned(uint16_t* dest, const uint8_t* src, int chars) {
-  if (chars >= OS::kMinComplexConvertMemCopy) {
-    OS::MemCopyUint16Uint8(dest, src, chars);
-  } else {
-    OS::MemCopyUint16Uint8Wrapper(dest, src, chars);
-  }
-}
-
-
-void CopyCharsUnsigned(uint16_t* dest, const uint16_t* src, int chars) {
-  switch (static_cast<unsigned>(chars)) {
-    case 0:
-      break;
-    case 1:
-      *dest = *src;
-      break;
-    case 2:
-      memcpy(dest, src, 4);
-      break;
-    case 3:
-      memcpy(dest, src, 6);
-      break;
-    case 4:
-      memcpy(dest, src, 8);
-      break;
-    case 5:
-      memcpy(dest, src, 10);
-      break;
-    case 6:
-      memcpy(dest, src, 12);
-      break;
-    case 7:
-      memcpy(dest, src, 14);
-      break;
-    default:
-      OS::MemCopy(dest, src, chars * sizeof(*dest));
-      break;
-  }
-}
-
-
-#elif defined(V8_HOST_ARCH_MIPS)
-void CopyCharsUnsigned(uint8_t* dest, const uint8_t* src, int chars) {
-  if (chars < OS::kMinComplexMemCopy) {
-    memcpy(dest, src, chars);
-  } else {
-    OS::MemCopy(dest, src, chars);
-  }
-}
-
-void CopyCharsUnsigned(uint16_t* dest, const uint16_t* src, int chars) {
-  if (chars < OS::kMinComplexMemCopy) {
-    memcpy(dest, src, chars * sizeof(*dest));
-  } else {
-    OS::MemCopy(dest, src, chars * sizeof(*dest));
-  }
-}
-#endif
-
-
-class StringBuilder : public SimpleStringBuilder {
- public:
-  explicit StringBuilder(int size) : SimpleStringBuilder(size) { }
-  StringBuilder(char* buffer, int size) : SimpleStringBuilder(buffer, size) { }
-
-  // Add formatted contents to the builder just like printf().
-  void AddFormatted(const char* format, ...);
-
-  // Add formatted contents like printf based on a va_list.
-  void AddFormattedList(const char* format, va_list list);
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(StringBuilder);
-};
-
-
 } }  // namespace v8::internal
 
 #endif  // V8_UTILS_H_