[platform] Implement a worker pool

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 29 matching lines @@
 #include "counters.h"
 #include "cpu-profiler.h"
 #include "debug.h"
 #include "deoptimizer.h"
 #include "execution.h"
 #include "global-handles.h"
 #include "heap-profiler.h"
 #include "heap-snapshot-generator-inl.h"
 #include "icu_util.h"
 #include "json-parser.h"
+#ifdef V8_USE_DEFAULT_PLATFORM
+#include "libplatform/default-platform.h"
+#endif
 #include "messages.h"
 #ifdef COMPRESS_STARTUP_DATA_BZ2
 #include "natives.h"
 #endif
 #include "parser.h"
 #include "platform.h"
 #include "platform/time.h"
 #include "profile-generator-inl.h"
 #include "property-details.h"
 #include "property.h"
@@ skipping 563 matching lines @@
                                                  old_gen_size,
                                                  max_executable_size);
     if (!result) return false;
   }
   if (constraints->stack_limit() != NULL) {
     uintptr_t limit = reinterpret_cast<uintptr_t>(constraints->stack_limit());
     isolate->stack_guard()->SetStackLimit(limit);
   }
 
   isolate->set_max_available_threads(constraints->max_available_threads());
+
+#ifdef V8_USE_DEFAULT_PLATFORM
+  i::DefaultPlatform::SetThreadPoolSize(constraints->max_available_threads());
+#endif
+
   return true;
 }
 
 
 i::Object** V8::GlobalizeReference(i::Isolate* isolate, i::Object** obj) {
   LOG_API(isolate, "Persistent::New");
   i::Handle<i::Object> result = isolate->global_handles()->Create(*obj);
 #ifdef DEBUG
   (*obj)->Verify();
 #endif  // DEBUG
@@ skipping 7137 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal