Patch for allowing several V8 instances in process:...

src/v8-global-context.cc

+// Copyright 2009 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
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (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 "allocation.h"
+#include "api.h"
+#include "bootstrapper.h"
+#include "compilation-cache.h"
+#include "compiler.h"
+#include "debug.h"
+#include "disassembler.h"
+#include "execution.h"
+#include "global-handles.h"
+#include "jump-target.h"
+#include "mark-compact.h"
+#include "objects.h"
+#include "regexp-stack.h"
+#include "scanner.h"
+#include "scopeinfo.h"
+#include "serialize.h"
+#include "stub-cache.h"
+#include "top.h"
+#include "v8threads.h"
+
+namespace v8 {
+
+internal::Thread::LocalStorageKey context_key =
+  internal::Thread::CreateThreadLocalKey();
+
+internal::V8Context* default_context;
+internal::V8Context v8context;
+V8ContextBinder default_context_binder(&v8context, true);
+bool using_one_v8_instance = true;
+
+AllowSeveralV8InstancesInProcess::AllowSeveralV8InstancesInProcess() {
+  using_one_v8_instance = false;
+}
+
+AllowSeveralV8InstancesInProcess::~AllowSeveralV8InstancesInProcess() {
+}
+
+void BindContext(internal::V8Context* context,
+  bool bind_default = using_one_v8_instance) {
+  if (bind_default) {
+    default_context = context;
+  } else {
+    ASSERT(v8_context() != context);
+    internal::Thread::SetThreadLocal(context_key, context);
+  }
+}
+
+V8ContextProvider::V8ContextProvider()
+  :v8context_(new internal::V8Context()) {
+}
+
+V8ContextProvider::~V8ContextProvider() { delete v8context_; }
+
+V8ContextBinder::V8ContextBinder(internal::V8Context* v8context,
+  bool bind_default)
+  :v8context_(v8context), bound_default_(bind_default) {
+  BindContext(v8context_, bind_default);
+}
+
+V8ContextBinder::~V8ContextBinder() {
+  BindContext(NULL, bound_default_);
+}
+
+internal::V8Context::V8Context()
+  :thread_manager_data_(*new ThreadManagerData()),
+  heap_data_(*new HeapData()),
+  v8_data_(*new V8Data()),
+  transcendental_cache_data_(*new TranscendentalCacheData()),
+  descriptor_lookup_cache_data_(*new DescriptorLookupCacheData()),
+  keyed_lookup_cache_data_(*new KeyedLookupCacheData()),
+  stack_guard_data_(*new StackGuardData()),
+  top_data_(*new TopData()),
+  reg_exp_stack_data_(*new RegExpStackData()),
+  serializer_data_(*new SerializerData()),
+  context_slot_cache_data_(*new ContextSlotCacheData()),
+  handle_scope_implementer_(*new HandleScopeImplementer()),
+  handle_scope_data_(*new ImplementationUtilities::HandleScopeData()),
+  stub_cache_data_(*new StubCacheData()),
+  compilation_cache_data_(*new CompilationCacheData()),
+  global_handles_data_(*new GlobalHandlesData()),
+  memory_allocator_data_(*new MemoryAllocatorData()),
+  code_range_data_(*new CodeRangeData()),
+  mark_compact_collector_data_(*new MarkCompactCollectorData()),
+  relocatable_data_(*new RelocatableData()),
+  code_generator_data_(*new CodeGeneratorData()),
+  bootstrapper_data_(*new BootstrapperData()),
+  compiler_data_(*new CompilerData()),
+  scanner_data_(*new ScannerData()),
+  storage_data_(*new StorageData()),
+  builtins_data_(*new BuiltinsData()),
+  api_data_(*new ApiData()),
+  objects_data_(*new ObjectsData()),
+  stats_table_data_(*new StatsTableData()),
+  runtime_data_(NULL),
+  assembler_data_(NULL),
+  counters_(*new Counters()),
+  logger_data_(*new LoggerData()),
+  log_data_(*new LogData()),
+#ifdef ENABLE_DEBUGGER_SUPPORT
+  debugger_data_(*new DebuggerData()),
+  debug_data_(*new DebugData()),
+#endif
+  zone_data_(*new ZoneData()) {
+  handle_scope_data_.Initialize();
+  // explicitly bind during construction
+  V8Context* const prev_v8_context = v8_context();
+  BindContext(this);
+
+  StackGuard::PostConstruct();
+  Top::PostConstruct();
+  Runtime::PostConstruct();
+  Assembler::PostConstruct();
+
+  #ifdef ENABLE_DISASSEMBLER
+  Disassembler::PostConstruct();
+  #endif
+
+  BindContext(prev_v8_context);
+}
+
+internal::V8Context::~V8Context() {
+  // explicitly bind during destruction
+  BindContext(this);
+
+  internal::ThreadManager::FreeThreadResources();
+  Top::PreDestroy();
+  StackGuard::PreDestroy();
+
+  Runtime::PreDestroy();
+  Assembler::PreDestroy();
+  #ifdef ENABLE_DISASSEMBLER
+  Disassembler::PreDestroy();
+  #endif
+
+  delete &thread_manager_data_;
+  delete &v8_data_;
+  delete &heap_data_;
+  delete &transcendental_cache_data_;
+  delete &descriptor_lookup_cache_data_;
+  delete &keyed_lookup_cache_data_;
+  delete &zone_data_;
+  delete &top_data_;
+  delete &stack_guard_data_;
+  delete &reg_exp_stack_data_;
+  delete &serializer_data_;
+  delete &context_slot_cache_data_;
+  delete &handle_scope_implementer_;
+  delete &handle_scope_data_;
+  delete &stub_cache_data_;
+  delete &compilation_cache_data_;
+  delete &global_handles_data_;
+  delete &memory_allocator_data_;
+  delete &code_range_data_;
+  delete &mark_compact_collector_data_;
+  delete &relocatable_data_;
+  delete &code_generator_data_;
+  delete &bootstrapper_data_;
+  delete &scanner_data_;
+  delete &compiler_data_;
+  delete &storage_data_;
+  delete &stats_table_data_;
+  delete &api_data_;
+  delete &objects_data_;
+  delete &builtins_data_;
+  delete &counters_;
+  delete &logger_data_;
+  delete &log_data_;
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+  delete &debugger_data_;
+  delete &debug_data_;
+#endif
+  BindContext(NULL);
+}
+}
+