Add support for object pool

runtime/vm/debugger.cc

 // Copyright (c) 2012, 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.
 
 #include "vm/debugger.h"
 
 #include "include/dart_api.h"
 
 #include "vm/code_generator.h"
 #include "vm/code_patcher.h"
@@ skipping 539 matching lines @@
 }
 
 
 void DebuggerStackTrace::AddActivation(ActivationFrame* frame) {
   trace_.Add(frame);
 }
 
 
 CodeBreakpoint::CodeBreakpoint(const Function& func, intptr_t pc_desc_index)
     : function_(func.raw()),
+      code_(Code::ZoneHandle(func.unoptimized_code())),
       pc_desc_index_(pc_desc_index),
       pc_(0),
       line_number_(-1),
       is_enabled_(false),
       src_bpt_(NULL),
       next_(NULL) {
   ASSERT(!func.HasOptimizedCode());
-  Code& code = Code::Handle(func.unoptimized_code());
-  ASSERT(!code.IsNull());  // Function must be compiled.
-  PcDescriptors& desc = PcDescriptors::Handle(code.pc_descriptors());
+  ASSERT(!code_.IsNull());  // Function must be compiled.
+  PcDescriptors& desc = PcDescriptors::Handle(code_.pc_descriptors());
   ASSERT(pc_desc_index < desc.Length());
   token_pos_ = desc.TokenPos(pc_desc_index);
   ASSERT(token_pos_ >= 0);
   pc_ = desc.PC(pc_desc_index);
   ASSERT(pc_ != 0);
   breakpoint_kind_ = desc.DescriptorKind(pc_desc_index);
   ASSERT((breakpoint_kind_ == PcDescriptors::kIcCall) ||
          (breakpoint_kind_ == PcDescriptors::kFuncCall) ||
          (breakpoint_kind_ == PcDescriptors::kReturn));
 }
@@ skipping 34 matching lines @@
   }
   return line_number_;
 }
 
 
 void CodeBreakpoint::PatchCode() {
   ASSERT(!is_enabled_);
   switch (breakpoint_kind_) {
     case PcDescriptors::kIcCall: {
       saved_bytes_.target_address_ =
-          CodePatcher::GetInstanceCallAt(pc_, NULL, NULL);
-      CodePatcher::PatchInstanceCallAt(pc_,
+          CodePatcher::GetInstanceCallAt(pc_, code_, NULL, NULL);
+      CodePatcher::PatchInstanceCallAt(pc_, code_,
                                        StubCode::BreakpointDynamicEntryPoint());
       break;
     }
     case PcDescriptors::kFuncCall: {
-      saved_bytes_.target_address_ = CodePatcher::GetStaticCallTargetAt(pc_);
-      CodePatcher::PatchStaticCallAt(pc_,
-          StubCode::BreakpointStaticEntryPoint());
+      saved_bytes_.target_address_ =
+          CodePatcher::GetStaticCallTargetAt(pc_, code_);
+      CodePatcher::PatchStaticCallAt(pc_, code_,
+                                     StubCode::BreakpointStaticEntryPoint());
       break;
     }
     case PcDescriptors::kReturn:
       PatchFunctionReturn();
       break;
     default:
       UNREACHABLE();
   }
   is_enabled_ = true;
 }
 
 
 void CodeBreakpoint::RestoreCode() {
   ASSERT(is_enabled_);
   switch (breakpoint_kind_) {
     case PcDescriptors::kIcCall:
-      CodePatcher::PatchInstanceCallAt(pc_, saved_bytes_.target_address_);
+      CodePatcher::PatchInstanceCallAt(pc_, code_,
+                                       saved_bytes_.target_address_);
       break;
     case PcDescriptors::kFuncCall:
-      CodePatcher::PatchStaticCallAt(pc_, saved_bytes_.target_address_);
+      CodePatcher::PatchStaticCallAt(pc_, code_,
+                                     saved_bytes_.target_address_);
       break;
     case PcDescriptors::kReturn:
       RestoreFunctionReturn();
       break;
     default:
       UNREACHABLE();
   }
   is_enabled_ = false;
 }
 
@@ skipping 813 matching lines @@
         func_to_instrument = caller_frame->function().raw();
       }
     }
   } else if (resume_action_ == kStepInto) {
     // If the call target is not debuggable, we treat StepInto like
     // a StepOver, that is we instrument the current function.
     if (bpt->breakpoint_kind_ == PcDescriptors::kIcCall) {
       func_to_instrument = bpt->function();
       ICData& ic_data = ICData::Handle();
       Array& descriptor = Array::Handle();
-      CodePatcher::GetInstanceCallAt(bpt->pc_, &ic_data, &descriptor);
+      CodePatcher::GetInstanceCallAt(bpt->pc_, bpt->code_,
+                                     &ic_data, &descriptor);
       ArgumentsDescriptor arg_descriptor(descriptor);
       ActivationFrame* top_frame = stack_trace->ActivationFrameAt(0);
       intptr_t num_args = arg_descriptor.Count();
       Instance& receiver =
           Instance::Handle(top_frame->GetInstanceCallReceiver(num_args));
       Code& code =
           Code::Handle(ResolveCompileInstanceCallTarget(receiver,
                                                         ic_data,
                                                         descriptor));
       if (!code.IsNull()) {
@@ skipping 218 matching lines @@
 }
 
 
 void Debugger::RegisterCodeBreakpoint(CodeBreakpoint* bpt) {
   ASSERT(bpt->next() == NULL);
   bpt->set_next(code_breakpoints_);
   code_breakpoints_ = bpt;
 }
 
 }  // namespace dart