- Add a per-isolate pseudo random number generator to the

runtime/vm/isolate.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ISOLATE_H_
 #define VM_ISOLATE_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/thread.h"
 #include "vm/base_isolate.h"
 #include "vm/class_table.h"
 #include "vm/gc_callbacks.h"
 #include "vm/handles.h"
 #include "vm/megamorphic_cache_table.h"
+#include "vm/random.h"
 #include "vm/store_buffer.h"
 #include "vm/timer.h"
 
 namespace dart {
 
 // Forward declarations.
 class AbstractType;
 class ApiState;
 class Array;
 class Class;
@@ skipping 240 matching lines @@
   Mutex* mutex() const { return mutex_; }
 
   Debugger* debugger() const { return debugger_; }
 
   void set_single_step(bool value) { single_step_ = value; }
   bool single_step() const { return single_step_; }
   static intptr_t single_step_offset() {
     return OFFSET_OF(Isolate, single_step_);
   }
 
+  Random* random() { return &random_; }
+
   Simulator* simulator() const { return simulator_; }
   void set_simulator(Simulator* value) { simulator_ = value; }
 
   GcPrologueCallbacks& gc_prologue_callbacks() {
     return gc_prologue_callbacks_;
   }
 
   GcEpilogueCallbacks& gc_epilogue_callbacks() {
     return gc_epilogue_callbacks_;
   }
@@ skipping 50 matching lines @@
   static Dart_FileReadCallback file_read_callback() {
     return file_read_callback_;
   }
   static Dart_FileWriteCallback file_write_callback() {
     return file_write_callback_;
   }
   static Dart_FileCloseCallback file_close_callback() {
     return file_close_callback_;
   }
 
+  static void SetEntropySourceCallback(Dart_EntropySource entropy_source) {
+    entropy_source_callback_ = entropy_source;
+  }
+  static Dart_EntropySource entropy_source_callback() {
+    return entropy_source_callback_;
+  }
+
   void set_object_id_ring(ObjectIdRing* ring) {
     object_id_ring_ = ring;
   }
   ObjectIdRing* object_id_ring() {
     return object_id_ring_;
   }
 
   DeoptContext* deopt_context() const { return deopt_context_; }
   void set_deopt_context(DeoptContext* value) {
     ASSERT(value == NULL || deopt_context_ == NULL);
@@ skipping 25 matching lines @@
 
   static bool FetchStacktrace();
   static bool FetchStackFrameDetails();
   char* GetStatusDetails();
   char* GetStatusStacktrace();
   char* GetStatusStackFrame(intptr_t index);
   char* DoStacktraceInterrupt(Dart_IsolateInterruptCallback cb);
   template<class T> T* AllocateReusableHandle();
 
   static ThreadLocalKey isolate_key;
+
   StoreBuffer store_buffer_;
   ClassTable class_table_;
   MegamorphicCacheTable megamorphic_cache_table_;
   Dart_MessageNotifyCallback message_notify_callback_;
   char* name_;
   int64_t start_time_;
   Dart_Port main_port_;
   Heap* heap_;
   ObjectStore* object_store_;
   RawContext* top_context_;
   uword top_exit_frame_info_;
   void* init_callback_data_;
   Dart_EnvironmentCallback environment_callback_;
   Dart_LibraryTagHandler library_tag_handler_;
   ApiState* api_state_;
   StubCode* stub_code_;
   Debugger* debugger_;
   bool single_step_;
+  Random random_;
   Simulator* simulator_;
   LongJump* long_jump_base_;
   TimerList timer_list_;
   intptr_t deopt_id_;
   Mutex* mutex_;  // protects stack_limit_ and saved_stack_limit_.
   uword stack_limit_;
   uword saved_stack_limit_;
   MessageHandler* message_handler_;
   uword spawn_data_;
   bool is_runnable_;
@@ skipping 19 matching lines @@
   VMHandles reusable_handles_;
 
   static Dart_IsolateCreateCallback create_callback_;
   static Dart_IsolateInterruptCallback interrupt_callback_;
   static Dart_IsolateUnhandledExceptionCallback unhandled_exception_callback_;
   static Dart_IsolateShutdownCallback shutdown_callback_;
   static Dart_FileOpenCallback file_open_callback_;
   static Dart_FileReadCallback file_read_callback_;
   static Dart_FileWriteCallback file_write_callback_;
   static Dart_FileCloseCallback file_close_callback_;
+  static Dart_EntropySource entropy_source_callback_;
   static Dart_IsolateInterruptCallback vmstats_callback_;
 
   friend class ReusableHandleScope;
   friend class ReusableObjectHandleScope;
   DISALLOW_COPY_AND_ASSIGN(Isolate);
 };
 
 
 // When we need to execute code in an isolate, we use the
 // StartIsolateScope.
@@ skipping 81 matching lines @@
   Isolate* isolate_;
   char* script_url_;
   char* library_url_;
   char* function_name_;
   char* exception_callback_name_;
 };
 
 }  // namespace dart
 
 #endif  // VM_ISOLATE_H_