v8.h 4.53 KB
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// Copyright 2006-2008 the V8 project authors. All rights reserved.
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// 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
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//
// Top include for all V8 .cc files.
//

#ifndef V8_V8_H_
#define V8_V8_H_

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#if defined(GOOGLE3)
// Google3 special flag handling.
#if defined(DEBUG) && defined(NDEBUG)
// If both are defined in Google3, then we are building an optimized v8 with
// assertions enabled.
#undef NDEBUG
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#elif !defined(DEBUG) && !defined(NDEBUG)
// If neither is defined in Google3, then we are building a debug v8. Mark it
// as such.
#define DEBUG
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#endif
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#endif  // defined(GOOGLE3)
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// V8 only uses DEBUG, but included external files
// may use NDEBUG - make sure they are consistent.
#if defined(DEBUG) && defined(NDEBUG)
#error both DEBUG and NDEBUG are set
#endif

// Basic includes
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#include "../include/v8.h"
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#include "v8globals.h"
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#include "v8checks.h"
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#include "allocation.h"
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#include "v8utils.h"
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#include "flags.h"
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// Objects & heap
#include "objects-inl.h"
#include "spaces-inl.h"
#include "heap-inl.h"
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#include "log-inl.h"
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#include "cpu-profiler-inl.h"
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#include "handles-inl.h"
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namespace v8 {
namespace internal {
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class Deserializer;

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class V8 : public AllStatic {
 public:
  // Global actions.

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  // If Initialize is called with des == NULL, the initial state is
  // created from scratch. If a non-null Deserializer is given, the
  // initial state is created by reading the deserialized data into an
  // empty heap.
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  static bool Initialize(Deserializer* des);
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  static void TearDown();
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  static bool IsRunning() { return is_running_; }
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  static bool UseCrankshaft() { return use_crankshaft_; }
  static void DisableCrankshaft() { use_crankshaft_ = false; }
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  // To be dead you have to have lived
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  // TODO(isolates): move IsDead to Isolate.
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  static bool IsDead() { return has_fatal_error_ || has_been_disposed_; }
  static void SetFatalError();
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  // Report process out of memory. Implementation found in api.cc.
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  static void FatalProcessOutOfMemory(const char* location,
                                      bool take_snapshot = false);
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  // Random number generation support. Not cryptographically safe.
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  static uint32_t Random(Isolate* isolate);
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  // We use random numbers internally in memory allocation and in the
  // compilers for security. In order to prevent information leaks we
  // use a separate random state for internal random number
  // generation.
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  static uint32_t RandomPrivate(Isolate* isolate);
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  static Object* FillHeapNumberWithRandom(Object* heap_number);
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  // Idle notification directly from the API.
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  static bool IdleNotification();
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 private:
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  // True if engine is currently running
  static bool is_running_;
  // True if V8 has ever been run
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  static bool has_been_setup_;
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  // True if error has been signaled for current engine
  // (reset to false if engine is restarted)
  static bool has_fatal_error_;
  // True if engine has been shut down
  // (reset if engine is restarted)
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  static bool has_been_disposed_;
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  // True if we are using the crankshaft optimizing compiler.
  static bool use_crankshaft_;
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};

} }  // namespace v8::internal

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namespace i = v8::internal;

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#endif  // V8_V8_H_