1 files changed, 57 insertions, 0 deletions
diff --git a/server-tools/instance-manager/buffer.h b/server-tools/instance-manager/buffer.h
new file mode 100644
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+++ b/server-tools/instance-manager/buffer.h
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+#ifndef INCLUDES_MYSQL_INSTANCE_MANAGER_BUFFER_H
+#define INCLUDES_MYSQL_INSTANCE_MANAGER_BUFFER_H
+/* Copyright (C) 2004 MySQL AB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program 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 for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+#include <my_global.h>
+
+#ifdef __GNUC__
+#pragma interface
+#endif
+
+/*
+  This class is a simple implementation of the buffer of varying size.
+  It is used to store MySQL client-server protocol packets. This is why
+  the maximum buffer size if 16Mb. (See internals manual section
+  7. MySQL Client/Server Protocol)
+*/
+
+class Buffer
+{
+private:
+  enum { BUFFER_INITIAL_SIZE= 4096 };
+  /* maximum buffer size is 16Mb */
+  enum { MAX_BUFFER_SIZE= 16777216 };
+  size_t buffer_size;
+public:
+  Buffer()
+  {
+    buffer=(char *) malloc(BUFFER_INITIAL_SIZE);
+    buffer_size= BUFFER_INITIAL_SIZE;
+  }
+
+  ~Buffer()
+  {
+    free(buffer);
+  }
+
+public:
+  char *buffer;
+  int append(uint position, const char *string, uint len_arg);
+  int reserve(uint position, uint len_arg);
+};
+
+#endif /* INCLUDES_MYSQL_INSTANCE_MANAGER_BUFFER_H */