1 // Copyright 2006-2008 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 // If both are defined in Google3, then we are building an optimized v8 with 39 // assertions enabled. 40 #undef NDEBUG 41 #elif !defined(DEBUG) && !defined(NDEBUG) 42 // If neither is defined in Google3, then we are building a debug v8. Mark it 43 // as such. 44 #define DEBUG 45 #endif 46 #endif // defined(GOOGLE3) 47 48 // V8 only uses DEBUG, but included external files 49 // may use NDEBUG - make sure they are consistent. 50 #if defined(DEBUG) && defined(NDEBUG) 51 #error both DEBUG and NDEBUG are set 52 #endif 53 54 // Basic includes 55 #include "../include/v8.h" 56 #include "v8globals.h" 57 #include "v8checks.h" 58 #include "allocation.h" 59 #include "v8utils.h" 60 #include "flags.h" 61 62 // Objects & heap 63 #include "objects-inl.h" 64 #include "spaces-inl.h" 65 #include "heap-inl.h" 66 #include "log-inl.h" 67 #include "cpu-profiler-inl.h" 68 #include "handles-inl.h" 69 70 namespace v8 { 71 namespace internal { 72 73 class Deserializer; 74 75 class V8 : public AllStatic { 76 public: 77 // Global actions. 78 79 // If Initialize is called with des == NULL, the initial state is 80 // created from scratch. If a non-null Deserializer is given, the 81 // initial state is created by reading the deserialized data into an 82 // empty heap. 83 static bool Initialize(Deserializer* des); 84 static void TearDown(); IsRunning()85 static bool IsRunning() { return is_running_; } UseCrankshaft()86 static bool UseCrankshaft() { return use_crankshaft_; } 87 // To be dead you have to have lived 88 // TODO(isolates): move IsDead to Isolate. IsDead()89 static bool IsDead() { return has_fatal_error_ || has_been_disposed_; } 90 static void SetFatalError(); 91 92 // Report process out of memory. Implementation found in api.cc. 93 static void FatalProcessOutOfMemory(const char* location, 94 bool take_snapshot = false); 95 96 // Random number generation support. Not cryptographically safe. 97 static uint32_t Random(Isolate* isolate); 98 // We use random numbers internally in memory allocation and in the 99 // compilers for security. In order to prevent information leaks we 100 // use a separate random state for internal random number 101 // generation. 102 static uint32_t RandomPrivate(Isolate* isolate); 103 static Object* FillHeapNumberWithRandom(Object* heap_number, 104 Isolate* isolate); 105 106 // Idle notification directly from the API. 107 static bool IdleNotification(); 108 109 private: 110 static void InitializeOncePerProcess(); 111 112 // True if engine is currently running 113 static bool is_running_; 114 // True if V8 has ever been run 115 static bool has_been_setup_; 116 // True if error has been signaled for current engine 117 // (reset to false if engine is restarted) 118 static bool has_fatal_error_; 119 // True if engine has been shut down 120 // (reset if engine is restarted) 121 static bool has_been_disposed_; 122 // True if we are using the crankshaft optimizing compiler. 123 static bool use_crankshaft_; 124 }; 125 126 } } // namespace v8::internal 127 128 namespace i = v8::internal; 129 130 #endif // V8_V8_H_ 131