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      1 // Copyright 2011 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 //
     29 // Top include for all V8 .cc files.
     30 //
     31 
     32 #ifndef V8_V8_H_
     33 #define V8_V8_H_
     34 
     35 #if defined(GOOGLE3)
     36 // Google3 special flag handling.
     37 #if defined(DEBUG) && defined(NDEBUG)
     38 // V8 only uses DEBUG and whenever it is set we are building a debug
     39 // version of V8. We do not use NDEBUG and simply undef it here for
     40 // consistency.
     41 #undef NDEBUG
     42 #endif
     43 #endif  // defined(GOOGLE3)
     44 
     45 // V8 only uses DEBUG, but included external files
     46 // may use NDEBUG - make sure they are consistent.
     47 #if defined(DEBUG) && defined(NDEBUG)
     48 #error both DEBUG and NDEBUG are set
     49 #endif
     50 
     51 // Basic includes
     52 #include "../include/v8.h"
     53 #include "../include/v8-platform.h"
     54 #include "v8globals.h"
     55 #include "v8checks.h"
     56 #include "allocation.h"
     57 #include "assert-scope.h"
     58 #include "v8utils.h"
     59 #include "flags.h"
     60 
     61 // Objects & heap
     62 #include "objects-inl.h"
     63 #include "spaces-inl.h"
     64 #include "heap-inl.h"
     65 #include "incremental-marking-inl.h"
     66 #include "mark-compact-inl.h"
     67 #include "log-inl.h"
     68 #include "handles-inl.h"
     69 #include "zone-inl.h"
     70 
     71 namespace v8 {
     72 namespace internal {
     73 
     74 class Deserializer;
     75 
     76 class V8 : public AllStatic {
     77  public:
     78   // Global actions.
     79 
     80   // If Initialize is called with des == NULL, the initial state is
     81   // created from scratch. If a non-null Deserializer is given, the
     82   // initial state is created by reading the deserialized data into an
     83   // empty heap.
     84   static bool Initialize(Deserializer* des);
     85   static void TearDown();
     86 
     87   // Report process out of memory. Implementation found in api.cc.
     88   static void FatalProcessOutOfMemory(const char* location,
     89                                       bool take_snapshot = false);
     90 
     91   // Allows an entropy source to be provided for use in random number
     92   // generation.
     93   static void SetEntropySource(EntropySource source);
     94   // Support for return-address rewriting profilers.
     95   static void SetReturnAddressLocationResolver(
     96       ReturnAddressLocationResolver resolver);
     97   // Support for entry hooking JITed code.
     98   static void SetFunctionEntryHook(FunctionEntryHook entry_hook);
     99 
    100   static void AddCallCompletedCallback(CallCompletedCallback callback);
    101   static void RemoveCallCompletedCallback(CallCompletedCallback callback);
    102   static void FireCallCompletedCallback(Isolate* isolate);
    103 
    104   static v8::ArrayBuffer::Allocator* ArrayBufferAllocator() {
    105     return array_buffer_allocator_;
    106   }
    107 
    108   static void SetArrayBufferAllocator(v8::ArrayBuffer::Allocator *allocator) {
    109     CHECK_EQ(NULL, array_buffer_allocator_);
    110     array_buffer_allocator_ = allocator;
    111   }
    112 
    113   static void InitializePlatform(v8::Platform* platform);
    114   static void ShutdownPlatform();
    115   static v8::Platform* GetCurrentPlatform();
    116 
    117  private:
    118   static void InitializeOncePerProcessImpl();
    119   static void InitializeOncePerProcess();
    120 
    121   // List of callbacks when a Call completes.
    122   static List<CallCompletedCallback>* call_completed_callbacks_;
    123   // Allocator for external array buffers.
    124   static v8::ArrayBuffer::Allocator* array_buffer_allocator_;
    125   // v8::Platform to use.
    126   static v8::Platform* platform_;
    127 };
    128 
    129 
    130 // JavaScript defines two kinds of 'nil'.
    131 enum NilValue { kNullValue, kUndefinedValue };
    132 
    133 
    134 } }  // namespace v8::internal
    135 
    136 namespace i = v8::internal;
    137 
    138 #endif  // V8_V8_H_
    139