Add exception handler cache to isolate

runtime/vm/raw_object.h

 // 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.
 
 #ifndef RUNTIME_VM_RAW_OBJECT_H_
 #define RUNTIME_VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/atomic.h"
 #include "vm/globals.h"
@@ skipping 1385 matching lines @@
   // Variable info with [num_entries_] entries.
   VarInfo* data() {
     return reinterpret_cast<VarInfo*>(nameAddrAt(ptr()->num_entries_));
   }
 
   friend class Object;
 };
 
 
 class RawExceptionHandlers : public RawObject {
- public:
-  // The index into the ExceptionHandlers table corresponds to
-  // the try_index of the handler.
-  struct HandlerInfo {
-    uint32_t handler_pc_offset;  // PC offset value of handler.
-    int16_t outer_try_index;     // Try block index of enclosing try block.
-    int8_t needs_stacktrace;     // True if a stacktrace is needed.
-    int8_t has_catch_all;        // Catches all exceptions.
-  };
-
  private:
   RAW_HEAP_OBJECT_IMPLEMENTATION(ExceptionHandlers);
 
   // Number of exception handler entries.
   int32_t num_entries_;
 
   // Array with [num_entries_] entries. Each entry is an array of all handled
   // exception types.
   RawArray* handled_types_data_;
 
   // Exception handler info of length [num_entries_].
-  const HandlerInfo* data() const { OPEN_ARRAY_START(HandlerInfo, intptr_t); }
-  HandlerInfo* data() { OPEN_ARRAY_START(HandlerInfo, intptr_t); }
+  const ExceptionHandlerInfo* data() const {
+    OPEN_ARRAY_START(ExceptionHandlerInfo, intptr_t);
+  }
+  ExceptionHandlerInfo* data() {
+    OPEN_ARRAY_START(ExceptionHandlerInfo, intptr_t);
+  }
 
   friend class Object;
 };
 
 
 class RawContext : public RawObject {
   RAW_HEAP_OBJECT_IMPLEMENTATION(Context);
 
   int32_t num_variables_;
 
@@ skipping 999 matching lines @@
   COMPILE_ASSERT(kExternalTypedDataInt8ArrayCid ==
                  kTypedDataInt8ArrayViewCid + 15);
   COMPILE_ASSERT(kByteBufferCid == kExternalTypedDataInt8ArrayCid + 14);
   COMPILE_ASSERT(kNullCid == kByteBufferCid + 1);
   return (kNullCid - kTypedDataInt8ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_RAW_OBJECT_H_