base: Rewrite the CircleBuf to fix bugs and add serialization

The CircleBuf class has at least one bug causing it to overwrite the
wrong elements when wrapping. The current code has a lot of unused
functionality and duplicated code. This changeset replaces the old
implementation with a new version that supports serialization and
arbitrary types in the buffer (not just char).

1 files changed, 0 insertions, 76 deletions

diff --git a/src/unittest/circletest.cc b/src/unittest/circletest.cc
deleted file mode 100644
index 2ee75b6df..000000000
--- a/src/unittest/circletest.cc
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (c) 2002-2005 The Regents of The University of Michigan
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met: redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer;
- * redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution;
- * neither the name of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Authors: Nathan Binkert
- */
-
-#include <fcntl.h>
-#include <unistd.h>
-
-#include <iostream>
-
-#include "base/circlebuf.hh"
-
-const char *strings[] = {
-    "This is the first test\n",
-    "he went with his woman to the store\n",
-    "the man with the bat hit the woman with the hat\n",
-    "that that is is that that was\n",
-    "sue sells sea shells by the sea shore\n",
-    "go to the store and buy me some milk and bread\n",
-    "the friendly flight attendants spoke soothingly to "
-    "the frightened passengers in their native languages\n"
-};
-
-const int num_strings = sizeof(strings) / sizeof(char *);
-
-int
-main()
-{
-    CircleBuf buf(1024);
-
-    for (int count = 0; count < 100; count++)
-        buf.write(strings[count % num_strings]);
-    buf.read(STDOUT_FILENO);
-    write(STDOUT_FILENO, "<\n", 2);
-
-    for (int count = 0; count < 100; count++)
-        buf.write(strings[count % num_strings]);
-    buf.read(STDOUT_FILENO, 100);
-    write(STDOUT_FILENO, "<\n", 2);
-
-    buf.flush();
-    buf.write("asdfa asdf asd fasdf asdf\n");
-    buf.write("");
-    buf.write("");
-    buf.write("");
-    buf.write("");
-    buf.write("");
-    buf.write("");
-    buf.read(STDOUT_FILENO);
-    write(STDOUT_FILENO, "<\n", 2);
-}