--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/utilities/ostream.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,241 @@
+/*
+ * Copyright 1997-2005 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// Output streams for printing
+//
+// Printing guidelines:
+// Where possible, please use tty->print() and tty->print_cr().
+// For product mode VM warnings use warning() which internally uses tty.
+// In places where tty is not initialized yet or too much overhead,
+// we may use jio_printf:
+//     jio_fprintf(defaultStream::output_stream(), "Message");
+// This allows for redirection via -XX:+DisplayVMOutputToStdout and
+// -XX:+DisplayVMOutputToStderr
+class outputStream : public ResourceObj {
+ protected:
+   int _indentation; // current indentation
+   int _width;       // width of the page
+   int _position;    // position on the current line
+   int _newlines;    // number of '\n' output so far
+   julong _precount; // number of chars output, less _position
+   TimeStamp _stamp; // for time stamps
+
+   void update_position(const char* s, size_t len);
+   static const char* do_vsnprintf(char* buffer, size_t buflen,
+                                   const char* format, va_list ap,
+                                   bool add_cr,
+                                   size_t& result_len);
+
+ public:
+   // creation
+   outputStream(int width = 80);
+   outputStream(int width, bool has_time_stamps);
+
+   // indentation
+   void indent();
+   void inc() { _indentation++; };
+   void dec() { _indentation--; };
+   int  indentation() const    { return _indentation; }
+   void set_indentation(int i) { _indentation = i;    }
+   void fill_to(int col);
+
+   // sizing
+   int width()    const { return _width;    }
+   int position() const { return _position; }
+   int newlines() const { return _newlines; }
+   julong count() const { return _precount + _position; }
+   void set_count(julong count) { _precount = count - _position; }
+   void set_position(int pos)   { _position = pos; }
+
+   // printing
+   void print(const char* format, ...);
+   void print_cr(const char* format, ...);
+   void vprint(const char *format, va_list argptr);
+   void vprint_cr(const char* format, va_list argptr);
+   void print_raw(const char* str)            { write(str, strlen(str)); }
+   void print_raw(const char* str, int len)   { write(str,         len); }
+   void print_raw_cr(const char* str)         { write(str, strlen(str)); cr(); }
+   void print_raw_cr(const char* str, int len){ write(str,         len); cr(); }
+   void put(char ch);
+   void sp();
+   void cr();
+   void bol() { if (_position > 0)  cr(); }
+
+   // Time stamp
+   TimeStamp& time_stamp() { return _stamp; }
+   void stamp();
+   // Date stamp
+   void date_stamp(bool guard, const char* prefix, const char* suffix);
+   // A simplified call that includes a suffix of ": "
+   void date_stamp(bool guard) {
+     date_stamp(guard, "", ": ");
+   }
+
+   // portable printing of 64 bit integers
+   void print_jlong(jlong value);
+   void print_julong(julong value);
+
+   // flushing
+   virtual void flush() {}
+   virtual void write(const char* str, size_t len) = 0;
+   virtual ~outputStream() {}  // close properly on deletion
+
+   void dec_cr() { dec(); cr(); }
+   void inc_cr() { inc(); cr(); }
+};
+
+// standard output
+                                // ANSI C++ name collision
+extern outputStream* tty;           // tty output
+extern outputStream* gclog_or_tty;  // stream for gc log if -Xloggc:<f>, or tty
+
+// advisory locking for the shared tty stream:
+class ttyLocker: StackObj {
+ private:
+  intx _holder;
+
+ public:
+  static intx  hold_tty();                // returns a "holder" token
+  static void  release_tty(intx holder);  // must witness same token
+  static void  break_tty_lock_for_safepoint(intx holder);
+
+  ttyLocker()  { _holder = hold_tty(); }
+  ~ttyLocker() { release_tty(_holder); }
+};
+
+// for writing to strings; buffer will expand automatically
+class stringStream : public outputStream {
+ protected:
+  char*  buffer;
+  size_t buffer_pos;
+  size_t buffer_length;
+  bool   buffer_fixed;
+ public:
+  stringStream(size_t initial_bufsize = 256);
+  stringStream(char* fixed_buffer, size_t fixed_buffer_size);
+  ~stringStream();
+  virtual void write(const char* c, size_t len);
+  size_t      size() { return buffer_pos; }
+  const char* base() { return buffer; }
+  void  reset() { buffer_pos = 0; _precount = 0; _position = 0; }
+  char* as_string();
+};
+
+class fileStream : public outputStream {
+ protected:
+  FILE* _file;
+  bool  _need_close;
+ public:
+  fileStream(const char* file_name);
+  fileStream(FILE* file) { _file = file; _need_close = false; }
+  ~fileStream();
+  bool is_open() const { return _file != NULL; }
+  virtual void write(const char* c, size_t len);
+  void flush();
+};
+
+// unlike fileStream, fdStream does unbuffered I/O by calling
+// open() and write() directly. It is async-safe, but output
+// from multiple thread may be mixed together. Used by fatal
+// error handler.
+class fdStream : public outputStream {
+ protected:
+  int  _fd;
+  bool _need_close;
+ public:
+  fdStream(const char* file_name);
+  fdStream(int fd = -1) { _fd = fd; _need_close = false; }
+  ~fdStream();
+  bool is_open() const { return _fd != -1; }
+  void set_fd(int fd) { _fd = fd; _need_close = false; }
+  int fd() const { return _fd; }
+  virtual void write(const char* c, size_t len);
+  void flush() {};
+};
+
+void ostream_init();
+void ostream_init_log();
+void ostream_exit();
+void ostream_abort();
+
+// staticBufferStream uses a user-supplied buffer for all formatting.
+// Used for safe formatting during fatal error handling.  Not MT safe.
+// Do not share the stream between multiple threads.
+class staticBufferStream : public outputStream {
+ private:
+  char* _buffer;
+  size_t _buflen;
+  outputStream* _outer_stream;
+ public:
+  staticBufferStream(char* buffer, size_t buflen,
+                     outputStream *outer_stream);
+  ~staticBufferStream() {};
+  virtual void write(const char* c, size_t len);
+  void flush();
+  void print(const char* format, ...);
+  void print_cr(const char* format, ...);
+  void vprint(const char *format, va_list argptr);
+  void vprint_cr(const char* format, va_list argptr);
+};
+
+// In the non-fixed buffer case an underlying buffer will be created and
+// managed in C heap. Not MT-safe.
+class bufferedStream : public outputStream {
+ protected:
+  char*  buffer;
+  size_t buffer_pos;
+  size_t buffer_length;
+  bool   buffer_fixed;
+ public:
+  bufferedStream(size_t initial_bufsize = 256);
+  bufferedStream(char* fixed_buffer, size_t fixed_buffer_size);
+  ~bufferedStream();
+  virtual void write(const char* c, size_t len);
+  size_t      size() { return buffer_pos; }
+  const char* base() { return buffer; }
+  void  reset() { buffer_pos = 0; _precount = 0; _position = 0; }
+  char* as_string();
+};
+
+#define O_BUFLEN 2000   // max size of output of individual print() methods
+
+#ifndef PRODUCT
+
+class networkStream : public bufferedStream {
+
+  private:
+    int _socket;
+
+  public:
+    networkStream();
+    ~networkStream();
+
+    bool connect(const char *host, short port);
+    bool is_open() const { return _socket != -1; }
+    int read(char *buf, size_t len);
+    void close();
+    virtual void flush();
+};
+
+#endif