Version 3.6.5

src/debug.h

 // Copyright 2011 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 851 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(Debugger);
 };
 
 
 // This class is used for entering the debugger. Create an instance in the stack
 // to enter the debugger. This will set the current break state, make sure the
 // debugger is loaded and switch to the debugger context. If the debugger for
 // some reason could not be entered FailedToEnter will return true.
 class EnterDebugger BASE_EMBEDDED {
  public:
-  EnterDebugger()
-      : isolate_(Isolate::Current()),
-        prev_(isolate_->debug()->debugger_entry()),
-        it_(isolate_),
-        has_js_frames_(!it_.done()),
-        save_(isolate_) {
-    Debug* debug = isolate_->debug();
-    ASSERT(prev_ != NULL || !debug->is_interrupt_pending(PREEMPT));
-    ASSERT(prev_ != NULL || !debug->is_interrupt_pending(DEBUGBREAK));
-
-    // Link recursive debugger entry.
-    debug->set_debugger_entry(this);
-
-    // Store the previous break id and frame id.
-    break_id_ = debug->break_id();
-    break_frame_id_ = debug->break_frame_id();
-
-    // Create the new break info. If there is no JavaScript frames there is no
-    // break frame id.
-    if (has_js_frames_) {
-      debug->NewBreak(it_.frame()->id());
-    } else {
-      debug->NewBreak(StackFrame::NO_ID);
-    }
-
-    // Make sure that debugger is loaded and enter the debugger context.
-    load_failed_ = !debug->Load();
-    if (!load_failed_) {
-      // NOTE the member variable save which saves the previous context before
-      // this change.
-      isolate_->set_context(*debug->debug_context());
-    }
-  }
-
-  ~EnterDebugger() {
-    ASSERT(Isolate::Current() == isolate_);
-    Debug* debug = isolate_->debug();
-
-    // Restore to the previous break state.
-    debug->SetBreak(break_frame_id_, break_id_);
-
-    // Check for leaving the debugger.
-    if (prev_ == NULL) {
-      // Clear mirror cache when leaving the debugger. Skip this if there is a
-      // pending exception as clearing the mirror cache calls back into
-      // JavaScript. This can happen if the v8::Debug::Call is used in which
-      // case the exception should end up in the calling code.
-      if (!isolate_->has_pending_exception()) {
-        // Try to avoid any pending debug break breaking in the clear mirror
-        // cache JavaScript code.
-        if (isolate_->stack_guard()->IsDebugBreak()) {
-          debug->set_interrupts_pending(DEBUGBREAK);
-          isolate_->stack_guard()->Continue(DEBUGBREAK);
-        }
-        debug->ClearMirrorCache();
-      }
-
-      // Request preemption and debug break when leaving the last debugger entry
-      // if any of these where recorded while debugging.
-      if (debug->is_interrupt_pending(PREEMPT)) {
-        // This re-scheduling of preemption is to avoid starvation in some
-        // debugging scenarios.
-        debug->clear_interrupt_pending(PREEMPT);
-        isolate_->stack_guard()->Preempt();
-      }
-      if (debug->is_interrupt_pending(DEBUGBREAK)) {
-        debug->clear_interrupt_pending(DEBUGBREAK);
-        isolate_->stack_guard()->DebugBreak();
-      }
-
-      // If there are commands in the queue when leaving the debugger request
-      // that these commands are processed.
-      if (isolate_->debugger()->HasCommands()) {
-        isolate_->stack_guard()->DebugCommand();
-      }
-
-      // If leaving the debugger with the debugger no longer active unload it.
-      if (!isolate_->debugger()->IsDebuggerActive()) {
-        isolate_->debugger()->UnloadDebugger();
-      }
-    }
-
-    // Leaving this debugger entry.
-    debug->set_debugger_entry(prev_);
-  }
+  EnterDebugger();
+  ~EnterDebugger();
 
   // Check whether the debugger could be entered.
   inline bool FailedToEnter() { return load_failed_; }
 
   // Check whether there are any JavaScript frames on the stack.
   inline bool HasJavaScriptFrames() { return has_js_frames_; }
 
   // Get the active context from before entering the debugger.
   inline Handle<Context> GetContext() { return save_.context(); }
 
@@ skipping 89 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(MessageDispatchHelperThread);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 #endif  // V8_DEBUG_H_