Avoid accessing Isolate in source position logging.

src/source-position-table.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_SOURCE_POSITION_TABLE_H_
 #define V8_SOURCE_POSITION_TABLE_H_
 
 #include "src/assert-scope.h"
 #include "src/checks.h"
 #include "src/handles.h"
@@ skipping 16 matching lines @@
 
   int code_offset;
   int source_position;
   bool is_statement;
 };
 
 class SourcePositionTableBuilder {
  public:
   enum RecordingMode { OMIT_SOURCE_POSITIONS, RECORD_SOURCE_POSITIONS };
 
-  SourcePositionTableBuilder(Isolate* isolate, Zone* zone,
+  SourcePositionTableBuilder(Zone* zone,
                              RecordingMode mode = RECORD_SOURCE_POSITIONS);
 
-  void EndJitLogging(AbstractCode* code);
+  void AddPosition(size_t code_offset, int source_position, bool is_statement);
 
-  void AddPosition(size_t code_offset, int source_position, bool is_statement);
-  Handle<ByteArray> ToSourcePositionTable();
+  Handle<ByteArray> ToSourcePositionTable(Isolate* isolate,
+                                          Handle<AbstractCode> code);
 
  private:
   void AddEntry(const PositionTableEntry& entry);
 
   inline bool Omit() const { return mode_ == OMIT_SOURCE_POSITIONS; }
 
-  Isolate* isolate_;
   RecordingMode mode_;
   ZoneVector<byte> bytes_;
 #ifdef ENABLE_SLOW_DCHECKS
   ZoneVector<PositionTableEntry> raw_entries_;
 #endif
   PositionTableEntry previous_;  // Previously written entry, to compute delta.
-  // Currently jit_handler_data_ is used to store JITHandler-specific data
-  // over the lifetime of a SourcePositionTableBuilder.
-  void* jit_handler_data_;
 };
 
 class SourcePositionTableIterator {
  public:
   explicit SourcePositionTableIterator(ByteArray* byte_array);
 
   void Advance();
 
   int code_offset() const {
     DCHECK(!done());
@@ skipping 15 matching lines @@
   ByteArray* table_;
   int index_;
   PositionTableEntry current_;
   DisallowHeapAllocation no_gc;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_SOURCE_POSITION_TABLE_H_