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
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.
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.
29 // Top include for all V8 .cc files.
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
43 #endif // defined(GOOGLE3)
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
52 #include "../include/v8.h"
53 #include "v8globals.h"
55 #include "allocation.h"
60 #include "objects-inl.h"
61 #include "spaces-inl.h"
63 #include "incremental-marking-inl.h"
64 #include "mark-compact-inl.h"
66 #include "cpu-profiler-inl.h"
67 #include "handles-inl.h"
74 class V8 : public AllStatic {
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
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();
91 // Report process out of memory. Implementation found in api.cc.
92 static void FatalProcessOutOfMemory(const char* location,
93 bool take_snapshot = false);
95 // Allows an entropy source to be provided for use in random number
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
107 static uint32_t RandomPrivate(Isolate* isolate);
108 static Object* FillHeapNumberWithRandom(Object* heap_number,
111 // Idle notification directly from the API.
112 static bool IdleNotification(int hint);
114 static void AddCallCompletedCallback(CallCompletedCallback callback);
115 static void RemoveCallCompletedCallback(CallCompletedCallback callback);
116 static void FireCallCompletedCallback(Isolate* isolate);
119 static void InitializeOncePerProcessImpl();
120 static void InitializeOncePerProcess();
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_;
139 // JavaScript defines two kinds of 'nil'.
140 enum NilValue { kNullValue, kUndefinedValue };
143 // JavaScript defines two kinds of equality.
144 enum EqualityKind { kStrictEquality, kNonStrictEquality };
147 } } // namespace v8::internal
149 namespace i = v8::internal;