1362 class Backtrace: AllStatic {

  1363  public:

  1364   // Helper backtrace functions to store bci|version together.

  1365   static int merge_bci_and_version(int bci, int version);

  1366   static int merge_mid_and_cpref(int mid, int cpref);

  1367   static int bci_at(unsigned int merged);

  1368   static int version_at(unsigned int merged);

  1369   static int mid_at(unsigned int merged);

  1370   static int cpref_at(unsigned int merged);

  1371   static int get_line_number(const methodHandle& method, int bci);

  1372   static Symbol* get_source_file_name(InstanceKlass* holder, int version);

  1373 

  1374   // Debugging

  1375   friend class JavaClasses;

  1376 };

  1377 

  1378 // Interface to java.lang.StackFrameInfo objects

  1379 

  1380 #define STACKFRAMEINFO_INJECTED_FIELDS(macro)                      \

  1381   macro(java_lang_StackFrameInfo, mid,     short_signature, false) \

  1382   macro(java_lang_StackFrameInfo, version, short_signature, false) \

  1383   macro(java_lang_StackFrameInfo, cpref,   short_signature, false)

  1384 

  1385 class java_lang_StackFrameInfo: AllStatic {

  1386 private:

  1387   static int _declaringClass_offset;

  1388   static int _memberName_offset;

  1389   static int _bci_offset;

  1390   static int _methodName_offset;

  1391   static int _fileName_offset;

  1392   static int _lineNumber_offset;

  1393 

  1394   static int _mid_offset;

  1395   static int _version_offset;

  1396   static int _cpref_offset;

  1397 

  1398   static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);

  1399   static Symbol* get_file_name(Handle stackFrame, InstanceKlass* holder);

  1400 

  1401 public:

  1402   // Setters

  1403   static void set_declaringClass(oop info, oop value);

  1404   static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci);

  1405   static void set_bci(oop info, int value);

  1406 

  1407   // set method info in an instance of StackFrameInfo

  1408   static void fill_methodInfo(Handle info, TRAPS);

  1409   static void set_methodName(oop info, oop value);

  1410   static void set_fileName(oop info, oop value);

  1411   static void set_lineNumber(oop info, int value);

  1412 

  1413   // these injected fields are only used if -XX:-MemberNameInStackFrame set

  1414   static void set_mid(oop info, short value);

  1415   static void set_version(oop info, short value);

  1416   static void set_cpref(oop info, short value);

  1417 

  1418   static void compute_offsets();

  1419 

  1420   // Debugging

  1421   friend class JavaClasses;

  1422 };

  1423 

  1424 class java_lang_LiveStackFrameInfo: AllStatic {

  1425  private:

  1426   static int _monitors_offset;

  1427   static int _locals_offset;

  1428   static int _operands_offset;

  1429 

  1430  public:

  1431   static void set_monitors(oop info, oop value);

  1432   static void set_locals(oop info, oop value);

  1433   static void set_operands(oop info, oop value);

  1434 

  1435   static void compute_offsets();

  1436 

  1437   // Debugging

  1438   friend class JavaClasses;

  1439 };

  1440