src/share/vm/logging/logStream.hpp

rev 13105 : imported patch 8181917-refactor-ul-logstream-alt1-callsite-changes
rev 13106 : imported patch 8181917-refactor-ul-logstream-alt1-api-changes
rev 13107 : imported patch 8181917-refactor-ul-logstream-alt1-logstream-optimization

*** 30,42 ****
  #include "memory/resourceArea.hpp"
  #include "utilities/ostream.hpp"
  
  
  class LogStream : public outputStream {
!   bufferedStream  _current_line;
    LogTargetHandle _log_handle;
  
  public:
    // Constructor to support creation from a LogTarget instance.
    //
    // LogTarget(Debug, gc) log;
    // LogStreamBase(log) stream;
--- 30,64 ----
  #include "memory/resourceArea.hpp"
  #include "utilities/ostream.hpp"
  
  
  class LogStream : public outputStream {
! 
!   // Helper class, maintains the line buffer. For small line lengths,
!   // we avoid malloc and use a fixed sized member char array. If LogStream
!   // is allocated on the stack, this means small lines are assembled
!   // directly on the stack.
!   class LineBuffer {
!     char _smallbuf[128];
!     char* _buf;
!     size_t _cap;
!     size_t _pos;
!     void ensure_cap(size_t cap);
!   public:
!     LineBuffer();
!     ~LineBuffer();
!     const char* ptr() const { return _buf; }
!     void append(const char* s, size_t len);
!     void reset();
!   }; 
!   LineBuffer  _current_line;
    LogTargetHandle _log_handle;
  
+   // Prevent operator new for LogStream.
+ //  static void* operator new (size_t);
+ //   static void* operator new[] (size_t);
+   
  public:
    // Constructor to support creation from a LogTarget instance.
    //
    // LogTarget(Debug, gc) log;
    // LogStreamBase(log) stream;
*** 63,76 ****
    // Constructor to support creation from a log level and tagset.
    //
    // LogStreamBase(level, tageset);
    LogStream(LogLevelType level, LogTagSet* tagset) : _log_handle(level, tagset) {}
  
-   ~LogStream() {
-     guarantee(_current_line.size() == 0, "Buffer not flushed. Missing call to print_cr()?");
-   }
- 
  public:
    void write(const char* s, size_t len);
  };
  
  typedef LogStream LogStreamNoResourceMark;
--- 85,94 ----