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(); IsRunning()84 static bool IsRunning() { return is_running_; } UseCrankshaft()85 static bool UseCrankshaft() { return use_crankshaft_; } 86 // To be dead you have to have lived 87 // TODO(isolates): move IsDead to Isolate. IsDead()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