Add an API for additional profile log records

src/log.h

 // Copyright 2012 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 92 matching lines @@
 #define LOG_EVENTS_AND_TAGS_LIST(V)                                     \
   V(CODE_CREATION_EVENT,            "code-creation")                    \
   V(CODE_MOVE_EVENT,                "code-move")                        \
   V(CODE_DELETE_EVENT,              "code-delete")                      \
   V(CODE_MOVING_GC,                 "code-moving-gc")                   \
   V(SHARED_FUNC_MOVE_EVENT,         "sfi-move")                         \
   V(SNAPSHOT_POSITION_EVENT,        "snapshot-pos")                     \
   V(SNAPSHOT_CODE_NAME_EVENT,       "snapshot-code-name")               \
   V(TICK_EVENT,                     "tick")                             \
   V(REPEAT_META_EVENT,              "repeat")                           \
+  V(MARK_EVENT,                     "mark")                             \
   V(BUILTIN_TAG,                    "Builtin")                          \
   V(CALL_DEBUG_BREAK_TAG,           "CallDebugBreak")                   \
   V(CALL_DEBUG_PREPARE_STEP_IN_TAG, "CallDebugPrepareStepIn")           \
   V(CALL_IC_TAG,                    "CallIC")                           \
   V(CALL_INITIALIZE_TAG,            "CallInitialize")                   \
   V(CALL_MEGAMORPHIC_TAG,           "CallMegamorphic")                  \
   V(CALL_MISS_TAG,                  "CallMiss")                         \
   V(CALL_NORMAL_TAG,                "CallNormal")                       \
   V(CALL_PRE_MONOMORPHIC_TAG,       "CallPreMonomorphic")               \
   V(KEYED_CALL_DEBUG_BREAK_TAG,     "KeyedCallDebugBreak")              \
@@ skipping 147 matching lines @@
   void CodeStartLinePosInfoRecordEvent(PositionsRecorder* pos_recorder);
   // Emits a code line info finish record event.
   // It's the callee's responsibility to dispose the parameter jit_handler_data.
   void CodeEndLinePosInfoRecordEvent(Code* code, void* jit_handler_data);
 
   void SharedFunctionInfoMoveEvent(Address from, Address to);
 
   void CodeNameEvent(Address addr, int pos, const char* code_name);
   void SnapshotPositionEvent(Address addr, int pos);
 
+  void MarkEvent(char* mark);
+
   // ==== Events logged by --log-gc. ====
   // Heap sampling events: start, end, and individual types.
   void HeapSampleBeginEvent(const char* space, const char* kind);
   void HeapSampleEndEvent(const char* space, const char* kind);
   void HeapSampleItemEvent(const char* type, int number, int bytes);
   void HeapSampleJSConstructorEvent(const char* constructor,
                                     int number, int bytes);
   void HeapSampleJSRetainersEvent(const char* constructor,
                                          const char* event);
   void HeapSampleJSProducerEvent(const char* constructor,
@@ skipping 237 matching lines @@
                                  int length) = 0;
 
   NameBuffer* name_buffer_;
 };
 
 
 } }  // namespace v8::internal
 
 
 #endif  // V8_LOG_H_