Home | History | Annotate | Download | only in src 
      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 "v8globals.h"
     54 #include "v8checks.h"
     55 #include "allocation.h"
     56 #include "v8utils.h"
     57 #include "flags.h"
     58 
     59 // Objects & heap
     60 #include "objects-inl.h"
     61 #include "spaces-inl.h"
     62 #include "heap-inl.h"
     63 #include "incremental-marking-inl.h"
     64 #include "mark-compact-inl.h"
     65 #include "log-inl.h"
     66 #include "cpu-profiler-inl.h"
     67 #include "handles-inl.h"
     68 
     69 namespace v8 {
     70 namespace internal {
     71 
     72 class Deserializer;
     73 
     74 class V8 : public AllStatic {
     75  public:
     76   // Global actions.
     77 
     78   // If Initialize is called with des == NULL, the initial state is
     79   // created from scratch. If a non-null Deserializer is given, the
     80   // initial state is created by reading the deserialized data into an
     81   // empty heap.
     82   static bool Initialize(Deserializer* des);
     83   static void TearDown();
     84   static bool IsRunning() { return is_running_; }
     85   static bool UseCrankshaft() { return use_crankshaft_; }
     86   // To be dead you have to have lived
     87   // TODO(isolates): move IsDead to Isolate.
     88   static bool IsDead() { return has_fatal_error_ || has_been_disposed_; }
     89   static void SetFatalError();
     90 
     91   // Report process out of memory. Implementation found in api.cc.
     92   static void FatalProcessOutOfMemory(const char* location,
     93                                       bool take_snapshot = false);
     94 
     95   // Allows an entropy source to be provided for use in random number
     96   // generation.
     97   static void SetEntropySource(EntropySource source);
     98   // Support for return-address rewriting profilers.
     99   static void SetReturnAddressLocationResolver(
    100       ReturnAddressLocationResolver resolver);
    101   // Random number generation support. Not cryptographically safe.
    102   static uint32_t Random(Context* context);
    103   // We use random numbers internally in memory allocation and in the
    104   // compilers for security. In order to prevent information leaks we
    105   // use a separate random state for internal random number
    106   // generation.
    107   static uint32_t RandomPrivate(Isolate* isolate);
    108   static Object* FillHeapNumberWithRandom(Object* heap_number,
    109                                           Context* context);
    110 
    111   // Idle notification directly from the API.
    112   static bool IdleNotification(int hint);
    113 
    114   static void AddCallCompletedCallback(CallCompletedCallback callback);
    115   static void RemoveCallCompletedCallback(CallCompletedCallback callback);
    116   static void FireCallCompletedCallback(Isolate* isolate);
    117 
    118  private:
    119   static void InitializeOncePerProcessImpl();
    120   static void InitializeOncePerProcess();
    121 
    122   // True if engine is currently running
    123   static bool is_running_;
    124   // True if V8 has ever been run
    125   static bool has_been_set_up_;
    126   // True if error has been signaled for current engine
    127   // (reset to false if engine is restarted)
    128   static bool has_fatal_error_;
    129   // True if engine has been shut down
    130   // (reset if engine is restarted)
    131   static bool has_been_disposed_;
    132   // True if we are using the crankshaft optimizing compiler.
    133   static bool use_crankshaft_;
    134   // List of callbacks when a Call completes.
    135   static List<CallCompletedCallback>* call_completed_callbacks_;
    136 };
    137 
    138 
    139 // JavaScript defines two kinds of 'nil'.
    140 enum NilValue { kNullValue, kUndefinedValue };
    141 
    142 
    143 // JavaScript defines two kinds of equality.
    144 enum EqualityKind { kStrictEquality, kNonStrictEquality };
    145 
    146 
    147 } }  // namespace v8::internal
    148 
    149 namespace i = v8::internal;
    150 
    151 #endif  // V8_V8_H_
    152