[snapshot] serialize embedder-provided external references.

src/isolate.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_ISOLATE_H_
 #define V8_ISOLATE_H_
 
 #include <memory>
 #include <queue>
 #include <set>
@@ skipping 378 matching lines @@
   /* SerializerDeserializer state. */                                          \
   V(int32_t, jsregexp_static_offsets_vector, kJSRegexpStaticOffsetsVectorSize) \
   V(int, bad_char_shift_table, kUC16AlphabetSize)                              \
   V(int, good_suffix_shift_table, (kBMMaxShift + 1))                           \
   V(int, suffix_table, (kBMMaxShift + 1))                                      \
   V(uint32_t, private_random_seed, 2)                                          \
   ISOLATE_INIT_DEBUG_ARRAY_LIST(V)
 
 typedef List<HeapObject*> DebugObjectCache;
 
-#define ISOLATE_INIT_LIST(V)                                                   \
-  /* Assembler state. */                                                       \
-  V(FatalErrorCallback, exception_behavior, NULL)                              \
-  V(LogEventCallback, event_logger, NULL)                                      \
-  V(AllowCodeGenerationFromStringsCallback, allow_code_gen_callback, NULL)     \
-  /* To distinguish the function templates, so that we can find them in the */ \
-  /* function cache of the native context. */                                  \
-  V(int, next_serial_number, 0)                                                \
-  V(ExternalReferenceRedirectorPointer*, external_reference_redirector, NULL)  \
-  /* State for Relocatable. */                                                 \
-  V(Relocatable*, relocatable_top, NULL)                                       \
-  V(DebugObjectCache*, string_stream_debug_object_cache, NULL)                 \
-  V(Object*, string_stream_current_security_token, NULL)                       \
-  V(ExternalReferenceTable*, external_reference_table, NULL)                   \
-  V(base::HashMap*, external_reference_map, NULL)                              \
-  V(base::HashMap*, root_index_map, NULL)                                      \
-  V(int, pending_microtask_count, 0)                                           \
-  V(HStatistics*, hstatistics, NULL)                                           \
-  V(CompilationStatistics*, turbo_statistics, NULL)                            \
-  V(HTracer*, htracer, NULL)                                                   \
-  V(CodeTracer*, code_tracer, NULL)                                            \
-  V(bool, fp_stubs_generated, false)                                           \
-  V(uint32_t, per_isolate_assert_data, 0xFFFFFFFFu)                            \
-  V(PromiseRejectCallback, promise_reject_callback, NULL)                      \
-  V(const v8::StartupData*, snapshot_blob, NULL)                               \
-  V(int, code_and_metadata_size, 0)                                            \
-  V(int, bytecode_and_metadata_size, 0)                                        \
-  /* true if being profiled. Causes collection of extra compile info. */       \
-  V(bool, is_profiling, false)                                                 \
+#define ISOLATE_INIT_LIST(V)                                                  \
+  /* Assembler state. */                                                      \
+  V(FatalErrorCallback, exception_behavior, nullptr)                          \
+  V(LogEventCallback, event_logger, nullptr)                                  \
+  V(AllowCodeGenerationFromStringsCallback, allow_code_gen_callback, nullptr) \
+  V(ExternalReferenceRedirectorPointer*, external_reference_redirector,       \
+    nullptr)                                                                  \
+  /* State for Relocatable. */                                                \
+  V(Relocatable*, relocatable_top, nullptr)                                   \
+  V(DebugObjectCache*, string_stream_debug_object_cache, nullptr)             \
+  V(Object*, string_stream_current_security_token, nullptr)                   \
+  V(ExternalReferenceTable*, external_reference_table, nullptr)               \
+  V(intptr_t*, api_external_references, nullptr)                              \
+  V(base::HashMap*, external_reference_map, nullptr)                          \
+  V(base::HashMap*, root_index_map, nullptr)                                  \
+  V(int, pending_microtask_count, 0)                                          \
+  V(HStatistics*, hstatistics, nullptr)                                       \
+  V(CompilationStatistics*, turbo_statistics, nullptr)                        \
+  V(HTracer*, htracer, nullptr)                                               \
+  V(CodeTracer*, code_tracer, nullptr)                                        \
+  V(bool, fp_stubs_generated, false)                                          \
+  V(uint32_t, per_isolate_assert_data, 0xFFFFFFFFu)                           \
+  V(PromiseRejectCallback, promise_reject_callback, nullptr)                  \
+  V(const v8::StartupData*, snapshot_blob, nullptr)                           \
+  V(int, code_and_metadata_size, 0)                                           \
+  V(int, bytecode_and_metadata_size, 0)                                       \
+  /* true if being profiled. Causes collection of extra compile info. */      \
+  V(bool, is_profiling, false)                                                \
   ISOLATE_INIT_SIMULATOR_LIST(V)
 
 #define THREAD_LOCAL_TOP_ACCESSOR(type, name)                        \
   inline void set_##name(type v) { thread_local_top_.name##_ = v; }  \
   inline type name() const { return thread_local_top_.name##_; }
 
 #define THREAD_LOCAL_TOP_ADDRESS(type, name) \
   type* name##_address() { return &thread_local_top_.name##_; }
 
 
@@ skipping 1207 matching lines @@
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ISOLATE_H_