src/share/vm/utilities/ostream.hpp

*** 113,123 ****
     void print_julong(julong value);
  
     // flushing
     virtual void flush() {}
     virtual void write(const char* str, size_t len) = 0;
!    virtual void rotate_log() {} // GC log rotation
     virtual ~outputStream() {}   // close properly on deletion
  
     void dec_cr() { dec(); cr(); }
     void inc_cr() { inc(); cr(); }
  };
--- 113,123 ----
     void print_julong(julong value);
  
     // flushing
     virtual void flush() {}
     virtual void write(const char* str, size_t len) = 0;
!    virtual void rotate_log(bool force, outputStream* out = NULL) {} // GC log rotation
     virtual ~outputStream() {}   // close properly on deletion
  
     void dec_cr() { dec(); cr(); }
     void inc_cr() { inc(); cr(); }
  };
*** 238,249 ****
    uintx  _cur_file_num;             // current logfile rotation number, from 0 to NumberOfGCLogFiles-1
   public:
    gcLogFileStream(const char* file_name);
    ~gcLogFileStream();
    virtual void write(const char* c, size_t len);
!   virtual void rotate_log();
    void dump_loggc_header();
  };
  
  #ifndef PRODUCT
  // unit test for checking -Xloggc:<filename> parsing result
  void test_loggc_filename();
--- 238,256 ----
    uintx  _cur_file_num;             // current logfile rotation number, from 0 to NumberOfGCLogFiles-1
   public:
    gcLogFileStream(const char* file_name);
    ~gcLogFileStream();
    virtual void write(const char* c, size_t len);
!   virtual void rotate_log(bool force, outputStream* out = NULL);
    void dump_loggc_header();
+ 
+   /* If "force" sets true, force log file rotation from outside JVM */ 
+   bool should_rotate(bool force) {
+     return force ||
+              ((GCLogFileSize != 0) && ((uintx)_bytes_written >= GCLogFileSize));
+   }
+ 
  };
  
  #ifndef PRODUCT
  // unit test for checking -Xloggc:<filename> parsing result
  void test_loggc_filename();