Reland r17877 - Introduce a v8::Platform class that bundles embedder callbacks

src/v8.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 14 matching lines @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "v8.h"
 
 #include "assembler.h"
 #include "isolate.h"
 #include "elements.h"
 #include "bootstrapper.h"
 #include "debug.h"
+#ifdef V8_USE_DEFAULT_PLATFORM
+#include "default-platform.h"
+#endif
 #include "deoptimizer.h"
 #include "frames.h"
 #include "heap-profiler.h"
 #include "hydrogen.h"
 #include "lithium-allocator.h"
 #include "objects.h"
 #include "once.h"
 #include "platform.h"
 #include "sampler.h"
 #include "runtime-profiler.h"
 #include "serialize.h"
 #include "store-buffer.h"
 
 namespace v8 {
 namespace internal {
 
 V8_DECLARE_ONCE(init_once);
 
 List<CallCompletedCallback>* V8::call_completed_callbacks_ = NULL;
 v8::ArrayBuffer::Allocator* V8::array_buffer_allocator_ = NULL;
+v8::Platform* V8::platform_ = NULL;
 
 
 bool V8::Initialize(Deserializer* des) {
   InitializeOncePerProcess();
 
   // The current thread may not yet had entered an isolate to run.
   // Note the Isolate::Current() may be non-null because for various
   // initialization purposes an initializing thread may be assigned an isolate
   // but not actually enter it.
   if (i::Isolate::CurrentPerIsolateThreadData() == NULL) {
@@ skipping 28 matching lines @@
   ElementsAccessor::TearDown();
   LOperand::TearDownCaches();
   ExternalReference::TearDownMathExpData();
   RegisteredExtension::UnregisterAll();
   Isolate::GlobalTearDown();
 
   delete call_completed_callbacks_;
   call_completed_callbacks_ = NULL;
 
   Sampler::TearDown();
+
+#ifdef V8_USE_DEFAULT_PLATFORM
+  DefaultPlatform* platform = static_cast<DefaultPlatform*>(platform_);
+  platform_ = NULL;
+  delete platform;
+#endif
 }
 
 
 void V8::SetReturnAddressLocationResolver(
       ReturnAddressLocationResolver resolver) {
   StackFrame::SetReturnAddressLocationResolver(resolver);
 }
 
 
 // Used by JavaScript APIs
@@ skipping 59 matching lines @@
 
 
 void V8::InitializeOncePerProcessImpl() {
   FlagList::EnforceFlagImplications();
   if (FLAG_stress_compaction) {
     FLAG_force_marking_deque_overflows = true;
     FLAG_gc_global = true;
     FLAG_max_new_space_size = (1 << (kPageSizeBits - 10)) * 2;
   }
 
+#ifdef V8_USE_DEFAULT_PLATFORM
+  platform_ = new DefaultPlatform;
+#endif
   Sampler::SetUp();
   CPU::SetUp();
   OS::PostSetUp();
   ElementsAccessor::InitializeOncePerProcess();
   LOperand::SetUpCaches();
   SetUpJSCallerSavedCodeData();
   ExternalReference::SetUp();
   Bootstrapper::InitializeOncePerProcess();
 }
 
 
 void V8::InitializeOncePerProcess() {
   CallOnce(&init_once, &InitializeOncePerProcessImpl);
 }
 
+
+void V8::InitializePlatform(v8::Platform* platform) {
+  ASSERT(!platform_);
+  ASSERT(platform);
+  platform_ = platform;
+}
+
+
+void V8::ShutdownPlatform() {
+  ASSERT(platform_);
+  platform_ = NULL;
+}
+
+
+v8::Platform* V8::GetCurrentPlatform() {
+  ASSERT(platform_);
+  return platform_;
+}
+
 } }  // namespace v8::internal