Refactor the ring buffer in GCTracer.

test/cctest/test-gc-tracer.cc

Index: test/cctest/test-gc-tracer.cc
diff --git a/test/cctest/test-gc-tracer.cc b/test/cctest/test-gc-tracer.cc
deleted file mode 100644
index 1289ec5cea958a714b9a29d744bdf79fd6eb6057..0000000000000000000000000000000000000000
--- a/test/cctest/test-gc-tracer.cc
+++ /dev/null
@@ -1,124 +0,0 @@
-// Copyright 2014 the V8 project authors. 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 Google Inc. 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.
-
-#include <stdlib.h>
-#include <utility>
-
-#include "src/heap/gc-tracer.h"
-#include "test/cctest/cctest.h"
-
-using namespace v8::internal;
-
-TEST(RingBufferPartialFill) {
-  const int max_size = 6;
-  typedef RingBuffer<int, max_size>::const_iterator Iter;
-  RingBuffer<int, max_size> ring_buffer;
-  CHECK(ring_buffer.empty());
-  CHECK_EQ(static_cast<int>(ring_buffer.size()), 0);
-  CHECK(ring_buffer.begin() == ring_buffer.end());
-
-  // Fill ring_buffer partially: [0, 1, 2]
-  for (int i = 0; i < max_size / 2; i++) ring_buffer.push_back(i);
-
-  CHECK(!ring_buffer.empty());
-  CHECK(static_cast<int>(ring_buffer.size()) == max_size / 2);
-  CHECK(ring_buffer.begin() != ring_buffer.end());
-
-  // Test forward itartion
-  int i = 0;
-  for (Iter iter = ring_buffer.begin(); iter != ring_buffer.end(); ++iter) {
-    CHECK(*iter == i);
-    ++i;
-  }
-  CHECK_EQ(i, 3);  // one past last element.
-
-  // Test backward iteration
-  i = 2;
-  Iter iter = ring_buffer.back();
-  while (true) {
-    CHECK(*iter == i);
-    if (iter == ring_buffer.begin()) break;
-    --iter;
-    --i;
-  }
-  CHECK_EQ(i, 0);
-}
-
-
-TEST(RingBufferWrapAround) {
-  const int max_size = 6;
-  typedef RingBuffer<int, max_size>::const_iterator Iter;
-  RingBuffer<int, max_size> ring_buffer;
-
-  // Fill ring_buffer (wrap around): [9, 10, 11, 12, 13, 14]
-  for (int i = 0; i < 2 * max_size + 3; i++) ring_buffer.push_back(i);
-
-  CHECK(!ring_buffer.empty());
-  CHECK(static_cast<int>(ring_buffer.size()) == max_size);
-  CHECK(ring_buffer.begin() != ring_buffer.end());
-
-  // Test forward iteration
-  int i = 9;
-  for (Iter iter = ring_buffer.begin(); iter != ring_buffer.end(); ++iter) {
-    CHECK(*iter == i);
-    ++i;
-  }
-  CHECK_EQ(i, 15);  // one past last element.
-
-  // Test backward iteration
-  i = 14;
-  Iter iter = ring_buffer.back();
-  while (true) {
-    CHECK(*iter == i);
-    if (iter == ring_buffer.begin()) break;
-    --iter;
-    --i;
-  }
-  CHECK_EQ(i, 9);
-}
-
-
-TEST(RingBufferPushFront) {
-  const int max_size = 6;
-  typedef RingBuffer<int, max_size>::const_iterator Iter;
-  RingBuffer<int, max_size> ring_buffer;
-
-  // Fill ring_buffer (wrap around): [14, 13, 12, 11, 10, 9]
-  for (int i = 0; i < 2 * max_size + 3; i++) ring_buffer.push_front(i);
-
-  CHECK(!ring_buffer.empty());
-  CHECK(static_cast<int>(ring_buffer.size()) == max_size);
-  CHECK(ring_buffer.begin() != ring_buffer.end());
-
-  // Test forward iteration
-  int i = 14;
-  for (Iter iter = ring_buffer.begin(); iter != ring_buffer.end(); ++iter) {
-    CHECK(*iter == i);
-    --i;
-  }
-  CHECK_EQ(i, 8);  // one past last element.
-}